2,154 results match your criteria AOA News[Journal]


Successive phytoextraction alters ammonia oxidation and associated microbial communities in heavy metal contaminated agricultural soils.

Sci Total Environ 2019 Jan 25;664:616-625. Epub 2019 Jan 25.

Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China. Electronic address:

Phytoextraction is an attractive strategy for remediation of soils contaminated by heavy metal (HM), yet the effects of this practice on biochemical processes involved in soil nutrient cycling remain unknown. Here we investigated the impact of successive phytoextraction with a Cd/Zn co-hyperaccumulator Sedum alfredii (Crassulaceae) on potential nitrification rates (PNRs), abundance and composition of nitrifying communities and functional genes associated with nitrification using archaeal and bacterial 16S rRNA gene profiling and quantitative real-time PCR. The PNRs in rhizosphere were significantly (P < 0. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.01.315DOI Listing
January 2019

Assessment of the calcium releasing machinery in oocytes that failed to fertilize after conventional ICSI and assisted oocyte activation.

Reprod Biomed Online 2018 Dec 23. Epub 2018 Dec 23.

Ghent-Fertility and Stem Cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium. Electronic address:

Research Question: Can oocyte-related activation deficiencies be evaluated in oocytes that failed to fertilize after intracytoplasmic sperm injection (ICSI) combined with assisted oocyte activation (AOA)?

Design: Evaluation of the spindle-chromosome complexes and intracellular distribution of inositol trisphosphate type 1 receptors (IP3R1) in in-vitro matured (IVM) and failed-to-fertilize oocytes from patients undergoing AOA. Assessment of the oocyte-related Ca releasing capacity in response to Ca ionophores and sperm microinjection in oocytes that failed to fertilize after ICSI or ICSI-AOA.

Results: IVM oocytes from patients undergoing conventional ICSI (control) and ICSI-AOA (study group) revealed a similar normalcy of spindle-chromosome complexes and distribution patterns of IP3R1. Read More

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http://dx.doi.org/10.1016/j.rbmo.2018.12.035DOI Listing
December 2018

The "Artery of Aphasia," A Uniquely Sensitive Posterior Temporal Middle Cerebral Artery Branch that Supplies Language Areas in the Brain: Anatomy and Report of Four Cases.

World Neurosurg 2019 Feb 5. Epub 2019 Feb 5.

Department of Neurosurgery, Prince of Wales Private Hospital, Sydney, Australia. Electronic address:

Background: Arterial disruption during brain surgery can cause devastating injuries to wide expanses of white and grey matter far beyond the tumor resection cavity. Such damage may occur as a result of disrupting blood flow through "en passage" arteries. Identification of these arteries is critical to prevent unforeseen neurologic sequelae during brain tumor resection. Read More

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http://dx.doi.org/10.1016/j.wneu.2019.01.159DOI Listing
February 2019
3 Reads

Nitrification inhibitors effectively target N O-producing Nitrosospira spp. in tropical soil.

Environ Microbiol 2019 Feb 8. Epub 2019 Feb 8.

Department of Microbial Ecology, Netherlands Institute for Ecology NIOO-KNAW, Wageningen, Netherlands.

The nitrification inhibitors (NIs) 3,4-dimethylpyrazole (DMPP) and dicyandiamide (DCD) can effectively reduce N O emissions; however, which species are targeted and the effect of these NIs on the microbial nitrifier community is still unclear. Here we identified the ammonia oxidizing bacteria (AOB) species linked to N O emissions and evaluated the effects of urea and urea with DCD and DMPP on the nitrifying community in a 258-day field experiment under sugarcane. Using an amoA AOB amplicon sequencing approach and mining a previous dataset of 16S rRNA sequences, we characterized the most likely N O-producing AOB as a Nitrosospira spp. Read More

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http://dx.doi.org/10.1111/1462-2920.14557DOI Listing
February 2019

Long-term fertilization regimes change soil nitrification potential by impacting active autotrophic ammonia oxidizers and nitrite oxidizers as assessed by DNA stable isotope probing.

Environ Microbiol 2019 Feb 6. Epub 2019 Feb 6.

Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, National Engineering Research Center for Organic-based Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, 210095, China.

Chemoautotrophic ammonia-oxidizers and nitrite-oxidizers are responsible for a significant amount of soil nitrate production. The identity and composition of these active nitrifiers in soils under different long-term fertilization regimes remain largely under-investigated. Based on that soil nitrification potential significantly decreased in soils with chemical fertilization (CF) and increased in soils with organic fertilization (OF), a microcosm experiment with DNA stable isotope probing was further conducted to clarify the active nitrifiers. Read More

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http://dx.doi.org/10.1111/1462-2920.14553DOI Listing
February 2019
6 Reads

Purple Sulfur Bacteria Dominate Microbial Community in Brazilian Limestone Cave.

Microorganisms 2019 Jan 23;7(2). Epub 2019 Jan 23.

Department of Biological Sciences, State University of Santa Cruz, Rod. Jorge Amado, Km 16, Ilheus CEP: 45662-900, Bahia, Brazil.

The mineralogical composition of caves makes the environment ideal for inhabitation by microbes. However, the bacterial diversity in the cave ecosystem remains largely unexplored. In this paper, we described the bacterial community in an oxic chamber of the Sopradeira cave, an iron-rich limestone cave, in the semiarid region of Northeast Brazil. Read More

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http://dx.doi.org/10.3390/microorganisms7020029DOI Listing
January 2019

Long- and short-chain AHLs affect AOA and AOB microbial community composition and ammonia oxidation rate in activated sludge.

J Environ Sci (China) 2019 Apr 30;78:53-62. Epub 2018 Jun 30.

CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address:

Quorum sensing (QS) regulation of the composition of ammonia-oxidising archaea (AOA) and ammonia-oxidising bacteria (AOB) communities and functions in wastewater treatment was investigated. Specifically, we explored the role of N-acyl-l-homoserine lactones (AHLs) in microbial community dynamics in activated sludge. On average, the specific ammonia-oxidising-rate increased from 1. Read More

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http://dx.doi.org/10.1016/j.jes.2018.06.022DOI Listing
April 2019
2 Reads

Microbial mechanisms and ecosystem flux estimation for aerobic NO emissions from deciduous forest soils.

Proc Natl Acad Sci U S A 2019 Feb 18;116(6):2138-2145. Epub 2019 Jan 18.

Integrated Program in the Environment, Indiana University, Bloomington, IN 47405;

Reactive nitrogen oxides (NO; NO = NO + NO + HONO) decrease air quality and impact radiative forcing, yet the factors responsible for their emission from nonpoint sources (i.e., soils) remain poorly understood. Read More

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http://dx.doi.org/10.1073/pnas.1814632116DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6369794PMC
February 2019
4 Reads

Cognitive Skills Assessment for the Aging Orthopaedic Surgeon: AOA Critical Issues.

J Bone Joint Surg Am 2019 Jan;101(2):e7

Reiter Burns LLP, Chicago, Illinois.

Physician leaders are increasingly confronted with the challenge of evaluating the performance of surgical colleagues during the last phase of their careers. Identification of physicians with declining cognitive and clinical skills must be balanced against awareness of laws protecting colleagues from discrimination. Responding successfully to this challenge requires appropriate policies, reliable data, standardized evaluation tools, consistent documentation, and the development of compassionate and effective solutions that avoid discriminatory practices. Read More

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http://dx.doi.org/10.2106/JBJS.18.00470DOI Listing
January 2019
3 Reads

Nitric oxide acutely modulates hypothalamic and neurohypophyseal carbon monoxide and hydrogen sulphide production to control vasopressin, oxytocin and atrial natriuretic peptide release in rats.

J Neuroendocrinol 2019 Jan 11:e12686. Epub 2019 Jan 11.

Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.

Nitric oxide (NO) negatively modulates the secretion of vasopressin (AVP), oxytocin (OT) and atrial natriuretic peptide (ANP) induced by the increase in extracellular osmolality, whereas carbon monoxide (CO) and hydrogen sulphide (H S) act to potentiate it; however, little information is available for the osmotic challenge model about whether and how such gaseous systems modulate each other. Therefore, using an acute ex vivo model of hypothalamic and neurohypophyseal explants (obtained from male 6/7-week-old Wistar rats) under conditions of extracellular iso- and hypertonicity, we determined the effects of NO (600 μmol L sodium nitroprusside), CO (100 μmol L tricarbonylchloro[glycinato]ruthenium [II]) and H S (10 mmol L sodium sulphide) donors and nitric oxide synthase (NOS) (300 μmol L N -methyl-l-arginine [LNMMA]), haeme oxygenase (HO) (200 μmol L Zn(II) deuteroporphyrin IX 2,4-bis-ethylene glycol [ZnDPBG]) and cystathionine β-synthase (CBS) (100 μmol L aminooxyacetate [AOA]) inhibitors on the release of hypothalamic ANP and hypothalamic and neurohypophyseal AVP and OT, as well as on the activities of NOS, HO and CBS. LNMMA reversed hyperosmolality-induced NOS activity, and enhanced hormonal release by the hypothalamus and neurohypophysis, in addition to increasing CBS and hypothalamic HO activity. Read More

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http://dx.doi.org/10.1111/jne.12686DOI Listing
January 2019
1 Read

[Response of the Soil NO Emission and Ammonia-oxidizing Microorganism Community to the Maize Straw Return with Reducing Fertilizer in Purple Soil].

Huan Jing Ke Xue 2019 Jan;40(1):401-411

Chongqing Municipal Tobacco Company, Chongqing 400023, China.

Crop straw is an important agricultural source, which can replace chemical fertilizers. A field experiment with six different amounts of fertilization combined with maize straw residues was carried out in purple soil, including the control (CK), conventional fertilizing (F), straw return with conventional fertilizing (100FS), straw return with 70% conventional fertilizing (70FS), straw return with 60% conventional fertilizing (60FS), and straw return with 50% regular fertilizing (50FS), to determine the response of the soil NO emission and ammonia-oxidizing microorganism community distribution to straw return with reducing fertilizer. The dynamic characteristics of the NO emission in purple soil were observed using an closed chamber and gas chromatography-based system. Read More

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http://www.cnki.net/kcms/doi/10.13227/j.hjkx.201805125.html
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http://dx.doi.org/10.13227/j.hjkx.201805125DOI Listing
January 2019
6 Reads

[Denitrification and Phosphorus Removal from Low C/N Urban Sewage Based on a Post-Partial Denitrification AOA-SBR Process].

Huan Jing Ke Xue 2019 Jan;40(1):360-368

School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China.

This study focuses on the investigation of the nitrogen (N) and phosphorus (P) removal characteristics of a combination of enhanced phosphorus removal (EBPR) with simultaneous partial nitrification endogenous denitrification (SPND) and post-partial denitrification process. An anaerobic/aerobic/anoxic (A/O/A) operated sequencing batch reactor (SBR) fed with urban sewage was optimized by regulating the aeration rate and anoxic time. Based on this optimization, deep-level nitrogen and phosphorus removals from low C/N urban sewage could be realized. Read More

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http://dx.doi.org/10.13227/j.hjkx.201807056DOI Listing
January 2019
1 Read

Factors driving the distribution and role of AOA and AOB in Phragmites communis rhizosphere in riparian zone.

J Basic Microbiol 2019 Jan 9. Epub 2019 Jan 9.

Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.

Ammonia oxidation, mainly driven by ammonia-oxidizing archaea (AOA) and bacteria (AOB), plays an important role in determining the rate of nitrification in riparian zones. However, the underlying factors driving the distribution and activity of AOA and AOB in riparian zones, especially in the rhizosphere of Phragmites communis remain unknown. This study revealed the dominance of AOA in ammonium oxidization with higher abundance and activity in both rhizosphere and bulk soil in summer and winter over AOB in riparian zones, based on molecular methods and double-inhibitors method. Read More

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http://dx.doi.org/10.1002/jobm.201800581DOI Listing
January 2019
2 Reads

Niche Separation of Ammonia Oxidizers in Mudflat and Agricultural Soils Along the Yangtze River, China.

Front Microbiol 2018 18;9:3122. Epub 2018 Dec 18.

State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, China.

Nitrification driven by ammonia oxidizers is a key step of nitrogen removal in estuarine environments. Spatial distribution characteristics of ammonia-oxidizers have been well understood in mudflats, but less studied in the agricultural soils next to mudflats, which also play an important role in nitrogen cycling of the estuarine ecosystem. In the present research, we investigated ammonia oxidizers' distributions along the Yangtze River estuary in Jiangsu Province, China, sampling soils right next to the estuary (mudflats) and the agricultural soils 100 m away. Read More

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https://www.frontiersin.org/article/10.3389/fmicb.2018.03122
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http://dx.doi.org/10.3389/fmicb.2018.03122DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6305492PMC
December 2018
4 Reads

Sequencing of Chemotherapy and Radiotherapy for Newly Diagnosed Anaplastic Oligodendroglioma and Oligoastrocytoma.

Am J Clin Oncol 2018 Dec 27. Epub 2018 Dec 27.

Department of Radiation Oncology, Allegheny General Hospital, Pittsburgh, PA.

Introduction: Adjuvant management of anaplastic oligodendrogliomas (AOs) and anaplastic oligoastrocytomas (AOAs) is guided by 2 seminal phase III trials, one of which utilized radiotherapy (RT) followed by chemotherapy (CT) (RT-CT), and the other in which CT was followed by RT (CT-RT). Both paradigms are endorsed by the National Comprehensive Cancer Network because no direct comparison in the first-line (nonprogressive) setting has been performed to date. This study of a contemporary national database sought to evaluate practice patterns and outcomes between both approaches. Read More

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http://dx.doi.org/10.1097/COC.0000000000000511DOI Listing
December 2018
1 Read

A new MRI marker of ataxia with oculomotor apraxia.

Eur J Radiol 2019 Jan 29;110:187-192. Epub 2018 Nov 29.

Hospices Civils de Lyon, Neurology D and Neuro-Ophthalmology Unit, Hôpital Neurologique Pierre Wertheimer, Bron, F-69677, France; Université de Lyon, Lyon 1 University, Lyon, F-69373, France; Lyon Neuroscience Research Center, INSERM U1028 CNRS UMR5292, Team ImpAct, Bron, F-69676, France. Electronic address:

Purpose: Evaluate the specificity and sensitivity of disappearance of susceptibility weighted imaging (SWI) dentate nuclei (DN) hypointensity in oculomotor apraxia patients (AOA).

Method: In this prospective study, 27 patients with autosomal genetic ataxia (AOA (n = 11), Friedreich ataxia and ataxia with vitamin E deficit (n = 4), and dominant genetic ataxia (n = 12)) were included along with fifteen healthy controls. MRIs were qualitatively classified for the presence or absence of DN hypointensity on FLAIR and SWI sequences. Read More

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http://dx.doi.org/10.1016/j.ejrad.2018.11.035DOI Listing
January 2019
2 Reads
2.369 Impact Factor

[Effects of quercetin on protective capacity in rats fed a high-fructose diet].

Vopr Pitan 2018 13;87(5):6-12. Epub 2018 Sep 13.

Federal Research Centre of Nutrition, Biotechnology and Food Safety, Moscow.

The purpose of the study was to determine effects of quercetin on protective capacity parameters in the experiment on rats fed a high fructose diet. Rats of the control group received a semi-synthetic (s/s) diet and water; animals from the 1st experimental group - s/s diet and 20% fructose solution instead of drinking water; rats of the 2nd experimental group- s/s diet with quercetin (0.1% indiet) and 20% fructose solution instead of drinking water for 20 weeks. Read More

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http://dx.doi.org/10.24411/0042-8833-2018-10047DOI Listing
September 2018
1 Read

[Evaluation of antioxidant activity of fresh apples different pomological varieties after treatment with ionizing radiation].

Authors:
R T Timakova

Vopr Pitan 2018 11;87(3):66-71. Epub 2018 May 11.

Ural State Economic University, Ekaterinburg.

Introduction to action GOST 33302-2015 "Fresh agricultural products. Guidance for irradiation as a phytosanitary treatment" on the territory of the Russian Federation regulating the use of radiation processing to extend shelf life and improve storability of fresh agricultural products requires commodity market understanding - to what extent and under what conditions this technology will allow you to keep the nutritional value of agricultural raw materials and meet the safety requirements in accordance with the Technical regulations of the Customs Union 021/2011 "On food safety". Currently there is no science-based regulation of radiation doses that would allow you to preserve the nutritional value of products, including antioxidant activity. Read More

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http://dx.doi.org/10.24411/0042-8833-2018-10044DOI Listing
May 2018
1 Read

Genomics insights into ecotype formation of ammonia-oxidizing archaea in the deep ocean.

Environ Microbiol 2018 Dec 28. Epub 2018 Dec 28.

Bigelow Laboratory for Ocean Sciences, 60 Bigelow Drive, East Boothbay, ME, 04544, USA.

Various lineages of ammonia-oxidizing archaea (AOA) are present in deep waters, but the mechanisms that determine ecotype formation are obscure. We studied 18 high-quality genomes of the marine group I AOA lineages (alpha, gamma and delta) from the Mariana and Ogasawara trenches. The genomes of alpha AOA resembled each other, while those of gamma and delta lineages were more divergent and had even undergone insertion of some phage genes. Read More

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http://doi.wiley.com/10.1111/1462-2920.14518
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http://dx.doi.org/10.1111/1462-2920.14518DOI Listing
December 2018
21 Reads
6.201 Impact Factor

Mitochondria-targeted antioxidant SKQ1 protects cornea from oxidative damage induced by ultraviolet irradiation and mechanical injury.

BMC Ophthalmol 2018 Dec 27;18(1):336. Epub 2018 Dec 27.

Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119992, Russia.

Background: Cornea protects the eye against natural and anthropogenic ultraviolet (UV) damage and mechanical injury. Corneal incisions produced by UV lasers in ophthalmic surgeries are often complicated by oxidative stress and inflammation, which delay wound healing and result in vision deterioration. This study trialed a novel approach to prevention and treatment of iatrogenic corneal injuries using SkQ1, a mitochondria-targeted antioxidant approved for therapy of polyethiological dry eye disease. Read More

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https://bmcophthalmol.biomedcentral.com/articles/10.1186/s12
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http://dx.doi.org/10.1186/s12886-018-0996-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6307206PMC
December 2018
7 Reads

Potentiometric method of plant microsuspensions antioxidant activity determination.

Food Chem 2019 Apr 22;278:653-658. Epub 2018 Nov 22.

Ural State University of Economics, 8 Marta/Narodnoy Voli St., 62/45, Ekaterinburg 620144, Russia. Electronic address:

This paper focuses on the development of a simple, fast and reliable technique of sample preparation to be employed as part of potentiometric measurements of plant total antioxidant activity (AOA). Plant extracts and plant microsuspensions were analysed. The conditions for obtaining plant extracts were chosen: they exhibited the highest antioxidant activity at +80 °C and extraction time 20 min. Read More

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http://dx.doi.org/10.1016/j.foodchem.2018.11.098DOI Listing
April 2019
1 Read

Suppression of Light-Induced Oxidative Stress in the Retina by Mitochondria-Targeted Antioxidant.

Antioxidants (Basel) 2018 Dec 21;8(1). Epub 2018 Dec 21.

Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow 119992, Russia.

Light-induced oxidation of lipids and proteins provokes retinal injuries and results in progression of degenerative retinal diseases, such as, for instance, iatrogenic photic maculopathies. Having accumulated over years retinal injuries contribute to development of age-related macular degeneration (AMD). Antioxidant treatment is regarded as a promising approach to protecting the retina from light damage and AMD. Read More

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http://www.mdpi.com/2076-3921/8/1/3
Publisher Site
http://dx.doi.org/10.3390/antiox8010003DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6356525PMC
December 2018
8 Reads

Response of ammonia-oxidizing archaea to heavy metal contamination in freshwater sediment.

J Environ Sci (China) 2019 Mar 29;77:392-399. Epub 2018 Sep 29.

South China Institute of Environmental Sciences (SCIES), Ministry of Environment Protection (MEP), Guangzhou 510655, China. Electronic address:

It has been well-documented that the distribution of ammonia-oxidizing bacteria (AOB) and archaea (AOA) in soils can be affected by heavy metal contamination, whereas information about the impact of heavy metal on these ammonia-oxidizing microorganisms in freshwater sediment is still lacking. The present study explored the change of sediment ammonia-oxidizing microorganisms in a freshwater reservoir after being accidentally contaminated by industrial discharge containing high levels of metals. Bacterial amoA gene was found to be below the quantitative PCR detection and was not successfully amplified by conventional PCR. Read More

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http://dx.doi.org/10.1016/j.jes.2018.09.020DOI Listing
March 2019
1 Read
2.002 Impact Factor

Glutamate-oxaloacetate transaminase activity promotes palmitate lipotoxicity in rat hepatocytes by enhancing anaplerosis and citric acid cycle flux.

J Biol Chem 2018 Dec 18. Epub 2018 Dec 18.

Vanderbilt University, United States.

Hepatocyte lipotoxicity is characterized by aberrant mitochondrial metabolism, which predisposes cells to oxidative stress and apoptosis.  Previously, we reported that translocation of calcium from the ER to mitochondria of palmitate-treated hepatocytes activated anaplerotic flux from glutamine to alpha-ketoglutarate (αKG), which subsequently entered the citric acid cycle (CAC) for oxidation. We hypothesized that increased glutamine anaplerosis fueled elevations in CAC flux and oxidative stress following palmitate treatment. Read More

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http://dx.doi.org/10.1074/jbc.RA118.004869DOI Listing
December 2018
1 Read

A Novel 12q13.2-q13.3 Microdeletion Syndrome With Combined Features of Diamond Blackfan Anemia, Pierre Robin Sequence and Klippel Feil Deformity.

Front Genet 2018 19;9:549. Epub 2018 Nov 19.

Department of Woman, Child and General and Specialized Surgery, University of Campania "L. Vanvitelli" Naples, Italy.

Diamond-Blackfan anemia (DBA) is a rare congenital erythroid aplasia with a highly heterogeneous genetic background; it usually occurs in infancy. Approximately 30-40% of patients have other associated congenital anomalies; in particular, facial anomalies, such as cleft palate, are part of about 10% of the DBA clinical presentations. Pierre Robin sequence (PRS) is a heterogeneous condition, defined by the presence of the triad of glossoptosis, micrognathia and cleft palate; it occurs in 1/8500 to 1/14,000 births. Read More

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http://dx.doi.org/10.3389/fgene.2018.00549DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6262175PMC
November 2018
3 Reads

Transcriptional activity and diversity of comammox bacteria as a previously overlooked ammonia oxidizing prokaryote in full-scale wastewater treatment plants.

Sci Total Environ 2019 Mar 29;656:717-722. Epub 2018 Nov 29.

College of Environmental Science and Engineering, The Key Laboratory of Resources and Environmental Systems Optimization, Ministry of Education, North China Electric Power University, Beijing 102206, China.

The discovery of complete ammonia oxidizing bacteria (CAOB) has fundamentally overturned the traditional recognition of nitrification. However, little was known about the transcriptional activity and diversity of the newly recognized ammonia oxidizing prokaryote in engineered ecosystems. To fill this gap, transcriptional investigations of CAOB amoA genes were carried out comparatively with the canonical ammonia oxidizing bacteria (AOB) and archaea (AOA) in eight full-scale wastewater treatment plants (WWTPs). Read More

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http://dx.doi.org/10.1016/j.scitotenv.2018.11.435DOI Listing
March 2019
2 Reads

New docs on the block: A profile of applicants and subsequent PGY1 trainees of categorical general surgery programs (2013-2016).

Am J Surg 2018 Nov 30. Epub 2018 Nov 30.

One:MAP Surgical Analytics, Department of Surgery, Loyola University Chicago Health Sciences Campus, 2160 S. 1st Avenue, Maywood, IL, 60153, USA; University of South Florida, Department of Surgery, Tampa, FL, USA. Electronic address:

Background: The categorical general surgery (GS) applicant pool and trainees have evolved. The purpose of this study is to profile contemporary applicants and subsequent matriculates of GS residencies.

Study Design: This study is a retrospective review of GS applicant and PGY1 trainee data which were obtained from ERAS, NRMP, and AAMC for the years 2013-2016. Read More

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http://dx.doi.org/10.1016/j.amjsurg.2018.11.022DOI Listing
November 2018
1 Read

Effects of ofloxacin on nitrogen removal and microbial community structure in constructed wetland.

Sci Total Environ 2019 Mar 27;656:503-511. Epub 2018 Nov 27.

Department of Civil and Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, E1A 07-03, Singapore117576, Singapore.

Constructed wetlands (CWs) have emerged as a promising technology for the purification of micro-polluted water. However, their nitrogen removal performance can be significantly degraded by design, operational, and environmental factors. The present study investigates the effects of ofloxacin (OFL: 0. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2018.11.358DOI Listing
March 2019
3 Reads

Drying and Rainfall Shape the Structure and Functioning of Nitrifying Microbial Communities in Riverbed Sediments.

Front Microbiol 2018 16;9:2794. Epub 2018 Nov 16.

Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany.

Non-flow periods in fluvial ecosystems are a global phenomenon. Streambed drying and rewetting by sporadic rainfalls could drive considerable changes in the microbial communities that govern stream nitrogen (N) availability at different temporal and spatial scales. We performed a microcosm-based experiment to investigate how dry period duration (DPD) (0, 3, 6, and 9 weeks) and magnitude of sporadic rewetting by rainfall (0, 4, and 21 mm applied at end of dry period) affected stocks of N in riverbed sediments, ammonia-oxidizing bacteria (AOB) and archaea (AOA) and rates of ammonia oxidation (AO), and emissions of nitrous oxide (NO) to the atmosphere. Read More

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http://dx.doi.org/10.3389/fmicb.2018.02794DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6250940PMC
November 2018
3 Reads
4.019 Impact Factor

Effects of antibiotic residuals in dewatered sludge on the behavior of ammonia oxidizers during vermicomposting maturation process.

Chemosphere 2019 Mar 28;218:810-817. Epub 2018 Nov 28.

School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Anning West Road No. 88, Lanzhou, 730070, China.

Antibiotics existed in dewatered sludge may affect the organic decomposition and nitrification efficiency of vermicomposting process, and thus lowering the agricultural value of sludge vermicompost. However, few studies have focused on the effects of antibiotics during vermicomposting process of sludge, notably for the maturated phage. Hence, this study aimed to investigate the effects of antibiotics on the nitrification rate and the features of ammonia oxidizing archaea (AOA) and bacteria (AOB) during vermicomposting maturated phage of sludge. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2018.11.167DOI Listing
March 2019
1 Read

Effects of fumigation with 1,3-dichloropropene on soil enzyme activities and microbial communities in continuous-cropping soil.

Ecotoxicol Environ Saf 2019 Mar 28;169:730-736. Epub 2018 Nov 28.

Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, 61 Daizong Street, Tai'an, Shandong 271018, People's Republic of China. Electronic address:

The compound 1,3-D (1,3-dichloropropene) is a potential candidate soil fumigant due to the restrictions on methyl bromide (MB). To date, little is known about the soil microbial community changes induced by 1,3-D fumigation. Therefore, soil properties, related soil enzymes, genes encoding the key enzymes of ammonia oxidation in both ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) and bacterial diversity were investigated to assess the effects of 1,3-D fumigation on the soil microbial community. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2018.11.071DOI Listing
March 2019
1 Read

Accuracy Bounds for Array-Based Positioning in Dense Multipath Channels.

Sensors (Basel) 2018 Dec 3;18(12). Epub 2018 Dec 3.

Christian Doppler Laboratory for Location-aware Electronic Systems, Graz University of Technology, 8010 Graz, Austria.

The accuracy of radio-based positioning systems will be limited by multipath interference in realistic application scenarios. This paper derives closed-form expressions for the Cramér⁻Rao lower bound (CRLB) on the achievable time-of-arrival (ToA) and angle-of-arrival (AoA) estimation-error variances, considering the presence of multipath radio channels, and extends these results to position estimation. The derivations are based on channel models comprising deterministic, specular multipath components as well as stochastic, diffuse/dense multipath. Read More

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http://dx.doi.org/10.3390/s18124249DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6308578PMC
December 2018
2 Reads

Diversity and seasonal distribution of ammonia-oxidizing archaea in the water column of a tropical estuary along the southeast Arabian Sea.

World J Microbiol Biotechnol 2018 Dec 3;34(12):188. Epub 2018 Dec 3.

Council of Scientific and Industrial Research (CSIR) - National Institute of Oceanography, Regional Centre, Cochin, Kerala, 682018, India.

Diversity and distribution pattern of ammonia-oxidizing archaea (AOA) were studied across a salinity gradient in the water column of Cochin Estuary (CE), a tropical monsoonal estuary along the southeast Arabian Sea. The water column of CE was found to be nutrient rich with high bacterial (3.7-6. Read More

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http://link.springer.com/10.1007/s11274-018-2570-0
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http://dx.doi.org/10.1007/s11274-018-2570-0DOI Listing
December 2018
4 Reads

Effects of age and extraction solvent on phytochemical content and antioxidant activity of fresh L. leaves.

Food Sci Nutr 2018 Nov 14;6(8):2188-2198. Epub 2018 Sep 14.

Food Biophysics, Biochemistry and Nutrition Laboratory Department of Food Science and Nutrition National School of Agro-Industrial Sciences (ENSAI) University of Ngaoundere Ngaoundere Cameroon.

Antioxidant activity (AOA) and phytochemical content of Lam leaves were determined as a function of their age and extraction solvent. Fresh Moringa leaves aged 30, 45, and 60 days were harvested and extracted with three solvents; methanol, ethanol, and water. AOA of leaf extracts was measured using radical scavenging assays (DPPH, ABTS, antiperoxide activity [APA]) and reducing assays (FRAP and total antioxidant capacity [TAC]), and these were correlated with total polyphenols (TPC), total flavonoids (TFC), and chlorophyll contents of leaves. Read More

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http://doi.wiley.com/10.1002/fsn3.783
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http://dx.doi.org/10.1002/fsn3.783DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6261213PMC
November 2018
17 Reads

Scientific publication misrepresentation among orthopaedic residency applicants.

Am J Surg 2018 Nov 27. Epub 2018 Nov 27.

Department of Orthopaedic Surgery and Rehabilitation, The University of Texas Medical Branch, Galveston, TX, USA.

Background: The predictors of erroneous publication reporting among orthopaedic surgery residency applicants have not been established.

Methods: A retrospective analysis of the reported scholarly activity of candidates who applied to our orthopaedic surgery department for a first-year residency position in 2017 was conducted to determine the incidence of scientific publication misrepresentation and analyze its association with pre-residency criteria.

Results: Out of 510 candidates, 264 (51. Read More

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http://dx.doi.org/10.1016/j.amjsurg.2018.11.036DOI Listing
November 2018
1 Read

Effects of assisted oocyte activation with calcium- ionophore and strontium chloride on ICSI outcomes.

Iran J Basic Med Sci 2018 Nov;21(11):1109-1117

Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.

Objectives: Failed fertilization after intra-cytoplasmic sperm injection (ICSI) is mainly attributed to failed oocyte activation and can be overcome by artificial oocyte activation (AOA). The present study aims to compare outcomes of ICSI following two different assisted oocyte activation chemical procedures (SrCl and Ionomycin) in sibling oocytes of ICSI candidates.

Materials And Methods: From March 2015 until February 2016, 105 infertile men with 99-100% abnormal sperm morphology, irrespective of sperm motility, concentration, or origin (semen or testicular) were included in this study. Read More

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http://dx.doi.org/10.22038/IJBMS.2018.30422.7331DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6251390PMC
November 2018
1 Read

Employing Ray-Tracing and Least-Squares Support Vector Machines for Localisation.

Sensors (Basel) 2018 Nov 20;18(11). Epub 2018 Nov 20.

Communication Systems & Networks Group, University of Bristol, Bristol BS8 1UB, UK.

This article evaluates the use of least-squares support vector machines, with ray-traced data, to solve the problem of localisation in multipath environments. The schemes discussed concern 2-D localisation, but could easily be extended to 3-D. It does not require NLOS identification and mitigation, hence, it can be applied in any environment. Read More

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http://dx.doi.org/10.3390/s18114059DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6263922PMC
November 2018
1 Read

[Effects of long-term different fertilization regimes on the abundance and community structure of ammonia oxidizers in paddy soils].

Ying Yong Sheng Tai Xue Bao 2018 Nov;29(11):3829-3837

College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.

Ammonia oxidation, driven by the ammonia oxidizers, is the rate-limiting step of nitrification and plays a key role in soil nitrogen cycling. In this study, real-time PCR and Illumina MiSeq sequencing approaches were used to investigate the effects of long-term different fertilization regimes on the abundance and community structure of ammonia oxidizers, targeting the amoA genes, in a 30-year located experimental paddy soil in Ningxiang County, Hunan Province. Four treatments were compared, including control without fertilizer (CK), fertilizers NPK (CF), 70% NPK plus 30% manure (CFM), and 40% NPK plus 60% manure (CFM). Read More

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http://dx.doi.org/10.13287/j.1001-9332.201811.031DOI Listing
November 2018
10 Reads

2018 AOA Research Abstracts and Poster Competition.

Authors:

J Am Osteopath Assoc 2018 Nov;118(11):e101-e202

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http://dx.doi.org/10.7556/jaoa.2018.163DOI Listing
November 2018
2 Reads

Effects of sulphur and Thiobacillus thioparus 1904 on nitrogen cycle genes during chicken manure aerobic composting.

Waste Manag 2018 Oct 4;80:10-16. Epub 2018 Sep 4.

Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Fertilizer in South Region, Ministry of Agriculture/Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Guangzhou, Guangdong 510640, China.

Severe nitrogen (N) loss is a barrier for composting treatment. Since N transformation during composting is closely related to nitrogen loss, the impacts of adding sulphur and Thiobacillus thioparus 1904 to N transformation during composting were investigated in this work. Physicochemical properties and the expression of genes encoding N-related proteins were analysed to evaluate microbiological processes associated with N dynamics. Read More

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http://dx.doi.org/10.1016/j.wasman.2018.08.050DOI Listing
October 2018
1 Read

Enhanced In Vitro Antitumor Activity of GnRH-III-Daunorubicin Bioconjugates Influenced by Sequence Modification.

Pharmaceutics 2018 Nov 9;10(4). Epub 2018 Nov 9.

Faculty of Science, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary.

Receptors for gonadotropin releasing hormone (GnRH) are highly expressed in various human cancers including breast, ovarian, endometrial, prostate and colorectal cancer. Ligands like human GnRH-I or the sea lamprey analogue GnRH-III represent a promising approach for the development of efficient drug delivery systems for targeted tumor therapy. Here, we report on the synthesis and cytostatic effect of 14 oxime bond-linked daunorubicin GnRH-III conjugates containing a variety of unnatural amino acids within the peptide sequence. Read More

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http://www.mdpi.com/1999-4923/10/4/223
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http://dx.doi.org/10.3390/pharmaceutics10040223DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6320914PMC
November 2018
8 Reads

Aglycemic HepG2 Cells Switch From Aminotransferase Glutaminolytic Pathway of Pyruvate Utilization to Complete Krebs Cycle at Hypoxia.

Front Endocrinol (Lausanne) 2018 26;9:637. Epub 2018 Oct 26.

Department of Mitochondrial Physiology, Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czechia.

Human hepatocellular carcinoma HepG2 cells are forced to oxidative phosphorylation (OXPHOS), when cultured in aglycemic conditions at galactose and glutamine. These Oxphos cells represent a prototype of cancer cell bioenergetics with mixed aerobic glycolysis and OXPHOS. We aimed to determine fractions of (i) glutaminolytic pathway involving aminotransferase reaction supplying 2-oxoglutarate (2OG) to the Krebs cycle vs. Read More

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http://dx.doi.org/10.3389/fendo.2018.00637DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6212521PMC
October 2018
2 Reads

[Responses of soil nitrogen transformation to long-term nitrogen fertilization and precipitation changes in a broad-leaved Korean pine forest in Changbai Mountains, China.]

Ying Yong Sheng Tai Xue Bao 2018 Sep;29(9):2797-2807

Changbai Mountains Forest Ecosystem Research Station, Antu 133613, Jilin, China.

Soil nitrogen (N) cycling, one of the most important biogeochemical processes in forest ecosystems, has significant environmental effects. However, little is known about how it responds to N deposition and precipitation changes. Here, we examined the main effects of N deposition (NF), rainfall reduction (RR) and their interactive effect (RF) on soil N cycling by N addition and transparent V-shaped board interception in a broad-leaved Korean pine forest in Changbai Mountains. Read More

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http://www.cnki.net/kcms/doi/10.13287/j.1001-9332.201809.018
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http://dx.doi.org/10.13287/j.1001-9332.201809.018DOI Listing
September 2018
12 Reads

Responses of Nitrogen-Cycling Microorganisms to Dazomet Fumigation.

Front Microbiol 2018 23;9:2529. Epub 2018 Oct 23.

Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.

The influence of soil fumigation on microorganisms involved in transforming nitrogen remains little understood, despite the use of fumigants for many decades to control soil-borne pathogens and plant-parasitic nematodes. We used real-time PCR (quantitative polymerase chain reaction) and 16S rRNA gene amplicon sequencing techniques to monitor changes in the diversity and community structure of microorganisms associated with nitrogen transfer after the soil was fumigated with dazomet (DZ). We also examined nitrous oxide (NO) emissions from these microorganisms present in fumigated fluvo-aquic soil and lateritic red soil. Read More

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https://www.frontiersin.org/article/10.3389/fmicb.2018.02529
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http://dx.doi.org/10.3389/fmicb.2018.02529DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6206233PMC
October 2018
10 Reads
3.941 Impact Factor

Efficient AoA-Based Wireless Indoor Localization for Hospital Outpatients Using Mobile Devices.

Sensors (Basel) 2018 Oct 30;18(11). Epub 2018 Oct 30.

School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK.

The motivation of this work is to help outpatients find their corresponding departments or clinics, thus, it needs to provide indoor positioning services with a room-level accuracy. Unlike wireless outdoor localization that is dominated by the global positioning system (GPS), wireless indoor localization is still an open issue. Many different schemes are being developed to meet the increasing demand for indoor localization services. Read More

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http://dx.doi.org/10.3390/s18113698DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6263839PMC
October 2018
1 Read

Non-cognitive factors predicting success in orthopedic surgery residency.

Orthop Rev (Pavia) 2018 Sep 5;10(3):7559. Epub 2018 Sep 5.

Department of Orthopedics, University of Cincinnati Medical Center, Cincinnati, OH.

Admissions to orthopedic surgery is a highly competitive process. Traditionally measures such as United States Medical Licensing Examination (USMLE) Step 1, class rank, AOA status have been major determinants in the ranking process. However, these traditional objective measures show mixed correlation to clinical success in orthopedic surgery residency. Read More

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https://www.pagepress.org/journals/index.php/or/article/view
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http://dx.doi.org/10.4081/or.2018.7559DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6187000PMC
September 2018
7 Reads

Effects of knee simulator control method and radiation dose on UHMWPE wear rate, and relationship between wear rate and clinical revision rate in National Joint Registry.

J Mech Behav Biomed Mater 2019 Feb 1;90:182-190. Epub 2018 Oct 1.

JFE Techno-Research Corporation, 1-1 Minamiwatarida-cho, Kawasaki-ku, Kawasaki city, Kanagawa 210-0855, Japan.

The wear rate of five types of cruciate-retaining artificial knee joint ultrahigh-molecular-weight polyethylene (UHMWPE) inserts was examined using two custom-made knee joint simulators satisfying ISO 14243-1 (load control) and ISO 14243-3 (displacement control). The wear rate of knee joints composed of a UHMWPE insert and a Co-Cr-Mo alloy or oxidized zirconium femoral component linearly increased with increasing number of wear cycles, and the volumetric wear rate per million cycles was approximately 6-18 mm/Mc. The wear rate was the lowest in the highly crosslinked knee joint irradiated at 90 kGy (Scorpio) among the five UHMWPE inserts. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S17516161183078
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http://dx.doi.org/10.1016/j.jmbbm.2018.09.034DOI Listing
February 2019
18 Reads

Marine Biomass-Derived Porous Carbon Sheets with Tuneable N-Doping Content for Superior Sodium Ion Storage.

ACS Appl Mater Interfaces 2018 Oct 15. Epub 2018 Oct 15.

It is highly desirable to synthesis the electrode materials of sodium ion storage devices from sustainable precursors via green methods. In this work, we fabricated an unique N,O dual-doped biocarbon nanosheet (CBCS) with hierarchical porosity by direct pyrolysis of low-cost cuttle bones and simple air oxidation activation (AOA) technique. With prolonging AOA time, thickness of the carbon sheets could be reduced controllably (from 35 nm to 5 nm), which may lead to tunable preparation for carbon nanosheets with certain thickness. Read More

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http://dx.doi.org/10.1021/acsami.8b14304DOI Listing
October 2018
4 Reads
6.723 Impact Factor

Subjective ratings of age-of-acquisition: exploring issues of validity and rater reliability.

J Child Lang 2019 Mar 23;46(2):199-213. Epub 2018 Oct 23.

Division of Speech and Language Pathology,Karolinska Institutet,Stockholm,Sweden.

This study aimed to investigate concerns of validity and reliability in subjective ratings of age-of-acquisition (AoA), through exploring characteristics of the individual rater. An additional aim was to validate the obtained AoA ratings against two corpora - one of child speech and one of adult speech - specifically exploring whether words over-represented in the child-speech corpus are rated with lower AoA than words characteristic of the adult-speech corpus. The results show that less than one-third of participating informants' ratings are valid and reliable. Read More

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http://dx.doi.org/10.1017/S0305000918000363DOI Listing
March 2019
1 Read