351,872 results match your criteria study carried


Clinical analysis of uterine intravenous leiomyomatosis: A retrospective study of 260 cases.

J Obstet Gynaecol Res 2021 Sep 15. Epub 2021 Sep 15.

Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China.

Methods: We collected the clinical data of 260 patients admitted to the hospital from April 2003 to September 2019 with pathologically confirmed intravenous leiomyomatosis (IVL) and followed up with these patients regularly. Univariate and multivariate logistic regression analyses were carried out on the relevant recurrence factors.

Results: A total of 166 patients were regularly followed up, the median follow-up time was 36 (range 2-168) months, 14 (5. Read More

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September 2021

Study of the structure of a multicomponent salt melt using molecular dynamics modeling.

J Phys Condens Matter 2021 Sep 15. Epub 2021 Sep 15.

Ural Branch of Russian Academy of Sciences, Institute of High-Temperature Electrochemistry, Sofia Kovalevskaya Str., 22, Yekaterinburg, 620990, RUSSIAN FEDERATION.

The composition of the electrolyte is critical in the electrodeposition of high-purity silicon. In this work, molecular dynamics modeling of the preparation of liquid salt melt KF-KCl-KI and a detailed study of its structure based on the method of statistical geometry have been performed. Partial radial distribution functions reflect the size of the ions under consideration and the averaged structure of the generated ionic subsystems. Read More

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September 2021

Longitudinal Genomic Characterization of Carbapenemase-producing Enterobacteriaceae (CPE) Reveals Changing Pattern of CPEs Isolated in Hong Kong Hospitals.

Int J Antimicrob Agents 2021 Sep 12:106430. Epub 2021 Sep 12.

Department of Microbiology, the Chinese University of Hong Kong, Hong Kong, China; Prince of Wales Hospital, Hong Kong, China. Electronic address:

A rising trend of carbapenemase-producing Enterobacteriaceae (CPE) isolated from patients was observed after implementing an active CPE surveillance programme in Hong Kong hospitals from 2011. We described the molecular epidemiology of 567 CPE from patients of three of seven public hospital clusters in Hong Kong. During a 7-year period, the incidence of CPE isolation increased from 0. Read More

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September 2021

Extended spectrum beta-lactamase-producing Escherichia coli from extraintestinal infections in humans and from food-producing animals, in Italy: a "One Health" study.

Int J Antimicrob Agents 2021 Sep 12:106433. Epub 2021 Sep 12.

Istituto Superiore di Sanità, Rome, Italy; Department of Medicine-University of Udine and Clinical Risk Management and Performance Assessment Unit, Udine Healthcare and University Integrated Trust, Udine, Italy.

In recent years, Escherichia coli producing extended spectrum beta-lactamases (ESBL) have become a serious public health problem and food-producing animals (FPA) have been suggested as a potential reservoir/source. In this study, we aimed to compare ESBL-producing E. coli isolates from different sources. Read More

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September 2021

A prospective, randomized, controlled clinical study on the effectiveness of a single-use negative pressure wound therapy system, compared to traditional negative pressure wound therapy in the treatment of diabetic ulcers of the lower extremities.

Wound Repair Regen 2021 Sep 15. Epub 2021 Sep 15.

Global Data Analytics, Smith+Nephew, Hull, UK.

A multicenter, phase 4, randomized, comparative-efficacy study in subjects with lower extremity wounds was carried out to compare wound closure rates, for a single-use negative pressure wound therapy (s-NPWT) versus traditional NPWT (t-NPWT) systems over a 12-week treatment period. From the initial population of patients with diabetic foot ulcers (DFU) and venous leg ulcers (VLU), we analyzed a subgroup of patients with diabetes mellitus and leg and foot ulcers (either DFUs or VLUs in diabetics), termed, the diabetic lower extremity ulcers (DLEU). In the DLEU group, there were 95 patients in intention-to-treat (ITT) and 61 patients in per protocol (PP) populations, respectively. Read More

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September 2021

Delay-and-sum-to-delay-standard-deviation factor: a promising adaptive beamformer.

Opt Lett 2021 Sep;46(18):4662-4665

A new adaptive weighting method [delay-and-sum-to-delay-standard-deviation factor (DASDSF)] combined with minimum variance (MV) beamforming is introduced in photoacoustic imaging (PAI). Existing MV-based beamformers improve photoacoustic image quality in terms of achieving narrow main lobes and, thus, improving spatial resolution. But, the beamformers give a strong side-lobe signal strength that greatly degrades the reconstructed image contrast. Read More

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September 2021

Reliability and Validity of the Spanish Version of the Medical Outcomes Study Pain Severity Scale in Mexican Patients With Rheumatic Diseases.

J Clin Rheumatol 2021 Sep;27(6S):S308-S315

From the Servicio de Reumatología, Hospital General Regional número 1, Delegación Yucatán, Instituto Mexicano del Seguro Social, Mérida, Yucatán; and Programa de Maestría y Doctorado en Ciencias Médicas, Odontológicas y de la Salud, Doctorado en Ciencias Médicas, Universidad Nacional Autónoma de Mexico, Ciudad de México, México.

Objective: To evaluate the reliability and validity of the Spanish version of the Medical Outcomes Study Pain Severity Scale (MOS-PSS) in patients with rheumatic diseases.

Methods: A cross-sectional study was carried out from January 2019 to March 2020 using a nonprobabilistic sampling of consecutive cases. The internal consistency of the scale was evaluated through the Cronbach α coefficient and by the item response theory reliability coefficient. Read More

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September 2021

'It's a double whammy': A qualitative study of illness uncertainty in individuals with Parkinson's disease in the context of COVID-19.

Chronic Illn 2021 Sep 15:17423953211043101. Epub 2021 Sep 15.

83563Division of Health Research, 151268Faculty of Health and Medicine, Lancaster University, UK.

Objectives: The purpose of this study was to explore the experiences of individuals with Parkinson's through the theoretical lens of illness uncertainty during the first UK full lockdown period (March-June 2020) put in place due outbreak of the COVID-19 pandemic.

Methods: Individual semi-structured interviews were carried out via telephone in May 2020 with 10 individuals with Parkinson's (six men and four women) recruited from Parkinson's UK. Interviews were recorded and transcribed verbatim, and thematic analysis was adopted to analyse the resulting data. Read More

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September 2021

Biomonitoring of metallic air pollutants in unique habitations of the Brahmaputra Valley using moss species-Atrichum angustatum: spatiotemporal deposition patterns and sources.

Environ Sci Pollut Res Int 2021 Sep 15. Epub 2021 Sep 15.

Department of Environmental Science, Tezpur University, Tezpur, 784028, India.

In this paper, we have evaluated the bioaccumulation of metals by Atrichum angustatum, which is a readily available moss species in the Brahmaputra valley, India. A systematic investigation of metallic pollutants in the atmosphere was carried out using A. angustatum as a biomonitor collected from representative locations during three seasons viz. Read More

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September 2021

Accuracy of procalcitonin for diagnosing peripheral blood culture contamination among patients with positive blood culture for potential contaminants.

Infection 2021 Sep 15. Epub 2021 Sep 15.

Department of Microbiology, University Hospital of Nancy, F-54000, Vandoeuvre-lès-Nancy, France.

Purpose: Blood culture contamination is still a frequently observed event and may lead to unnecessary antibiotic prescriptions and additional hazards and costs. However, in patients hospitalized in tertiary care, true bacteremias for pathogens that are classically considered as contaminants can be observed. We assessed the diagnostic accuracy of procalcitonin for differentiating blood culture contamination from bacteremia in patients with positive blood cultures for potential contaminants. Read More

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September 2021

Camouflaged Nests of Mischocyttarus mirificus (Hymenoptera, Vespidae).

Neotrop Entomol 2021 Sep 15. Epub 2021 Sep 15.

Depto de Zoologia, Instituto de Ciências Biológicas, Programa de Pós Graduação em Comportamento E Biologia Animal, Univ Federal de Juiz de Fora, Minas Gerais, Juiz de Fora, Brazil.

Social wasps present various architectural patterns for their nests, which may differ in shape, size, color, and material used in construction. The distribution pattern of comb cells presented by Mischocyttarus mirificus (Zikán, 1935) is vertical with a single cell of width, resulting in a filiform shape that camouflages in the middle of the substrate. There are few studies regarding this architectural pattern for social wasps and their role in camouflage, and this study aims to detail the nesting habits of this species. Read More

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September 2021

Australian experience with robot-assisted Roux-en-Y gastric bypass with comparison to a conventional laparoscopic series.

Surg Endosc 2021 Sep 15. Epub 2021 Sep 15.

Department of General Surgery, Epworth Richmond, 89 Bridge Road, Richmond, VA, 3121, USA.

Background: Robotic surgery is a novel approach to abdominal surgery. In Australia, the uptake of robotic assistance for bariatric surgery has been relatively slow compared to many other countries. The aim of this study is to report the first high volume experience of robotic-assisted Roux-en-Y gastric bypass surgery in Australia (RRYGB) and compare outcomes with a similar laparoscopic group (LRYGB). Read More

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September 2021

Identification of dental calcification stages as a predictor of skeletal development phase.

Dental Press J Orthod 2021 10;26(4):e2119292. Epub 2021 Sep 10.

Universidade Estadual da Paraíba, Departamento de Odontologia (Campina Grande/PB, Brazil).

Objective: This study aimed to establish a correlation between the stages of tooth calcification of mandibular canines and second molars with the phases of skeletal development.

Methods: In a consecutive series of panoramic, cephalometric and hand-wrist radiographs of 113 individuals (60 females and 53 males) with an average age of 12.24 ± 1. Read More

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September 2021

COVID-19: comments on official social network of the Ministry of Health about action Brazil Count on Me.

Rev Gaucha Enferm 2021 13;42(spe):e20200167. Epub 2021 Sep 13.

Universidade da Integração Internacional da Lusofonia Afro-Brasileira (UNILAB). Campus das Auroras. Redenção, Ceará, Brasil.

Objective: To unveil the content of comments in official posts calling from the Ministry of Helth, calling for health professionals to confront COVID-19.

Method: Qualitative study, carried out with 2823 comments, obtained from the virtual access to the Ministry of Health's social networks on Facebook, Instagram and Twitter. For textual corpus processing, used or software Interface R analyzes Multidimensional Texts and Questionnaires and performs a multivariate analysis by Descending Hierarchical Classification. Read More

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September 2021

Molecular dynamics study on the diffusion process of AuAgCuNiPd high-entropy alloy metallurgy induced by pulsed laser heating.

Phys Chem Chem Phys 2021 Sep 15;23(35):19482-19493. Epub 2021 Sep 15.

Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China.

As novel alloy materials with outstanding mechanical properties, high-entropy alloys have a wide range of promising applications. By establishing individual Au, Ag, Cu, Ni, and Pd nanolaminates with face-centered-cubic lattice structure arrangements, molecular dynamics simulation is carried out to track the diffusion process of AuAgCuNiPd high-entropy alloy metallurgy, which is induced by pulsed laser heating. The temperature, potential energy, and kinetic energy are analyzed to evaluate the metallurgy. Read More

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September 2021

Histopathological examination of the impact of sodium hypochlorite on the hepatobiliary system. An experimental study.

Ann Ital Chir 2021 ;92:412-418

Background: The liver is the most common organ for settlement of hydatic cyst disease. All acknowledged protoscolicidals that are used for echinococcus degeneration have a risk of caustic secondary sclerosing cholangitis. The sodium hypochlorite is an effective protoscolicidal agent for treatment of hydatid liver cysts in vitro. Read More

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January 2021

The C-terminal domain of Salmonid Alphavirus nonstructural protein 2 (nsP2) is essential and sufficient to block RIG-I pathway induction and interferon-mediated antiviral response.

J Virol 2021 Sep 15:JVI0115521. Epub 2021 Sep 15.

Université Paris-Saclay, INRAE, UVSQ, Virologie et Immunologie Moléculaires, Jouy-en-Josas, France.

Salmonid alphavirus (SAV) is an atypical alphavirus, which has a considerable impact on salmon and trout farms. Unlike other alphaviruses such as the chikungunya virus, SAV is transmitted without an arthropod vector, and does not cause cell shut-off during infection. The mechanisms by which SAV escapes the host immune system remain unknown. Read More

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September 2021

Pilot study: specific immunotherapy in patients with Papular urticaria by Cimex lectularius.

Eur Ann Allergy Clin Immunol 2021 Sep 15. Epub 2021 Sep 15.

Department of Clinical Immunology and Allergy, Hospital General De México (Dr Eduardo Liceaga), Ciudad De Mexico, Mexico.

Summary: Papular urticaria is a chronic allergic reaction induced by insect bites. In México the most common causative arthropods reported are bed bugs, fleas and mosquitoes. Approximately 70% of people who are bitten by experience hypersensitive reactions, papular urticaria, extensive erythema, urticaria, and even anaphylaxis has been reported, Pruritus is the major complaint, impairing quality of life and sleep. Read More

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September 2021

Studies on the application of the Paternò-Büchi reaction to the synthesis of novel fluorinated scaffolds.

Chemistry 2021 Sep 15. Epub 2021 Sep 15.

Hiroshima University, Department of Chemistry, JAPAN.

In the context of new scaffolds obtained by photochemical reactions, Paternò-Büchi reactions between heteroaromatic, trifluoromethylphenyl ketone and electron rich alkenes to give oxetanes are described. A comprehensive study has then been carried out on the reaction of aromatic ketones with fluorinated alkenes. Depending on the substitution pattern at the oxetane ring, a metathesis reaction is described as a minor side process to give mono fluorinated alkenes. Read More

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September 2021

Theoretical study of the Cl(P) + SiH reaction: global potential energy surface and product pair-correlated distributions. Comparison with experiment.

Phys Chem Chem Phys 2021 Sep 15. Epub 2021 Sep 15.

Área de Química Física and Instituto de Computación Científica Avanzada, Universidad de Extremadura, 06071 Badajoz, Spain.

For the theoretical study of the title reaction, an analytical full-dimensional potential energy surface named PES-2021 was developed for the first time, by fitting high-level explicitly-correlated data. This reaction presented high exothermicity, (298 K) = -11.6 kcal mol, reproducing the experimental evidence; it is a barrierless reaction and no intermediate complexes were found. Read More

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September 2021

Drought vulnerability and risk assessment in India: Sensitivity analysis and comparison of aggregation techniques.

J Environ Manage 2021 Sep 8;299:113689. Epub 2021 Sep 8.

Department of Civil Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.

Long term drought management requires proper assessment and characterization of drought hazard, vulnerability and risk. This is particularly important for an agriculture-dependent, highly-populated, developing country such as India. However, the regulation of drought vulnerability and drought risk assessment in the country is mostly region-specific and ad-hoc, considering only a limited number of vulnerability indicators. Read More

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September 2021

Is water quality better in wet years or dry years in river-connected lakes? A case study from Dongting Lake, China.

Environ Pollut 2021 Sep 4;290:118115. Epub 2021 Sep 4.

Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, Hunan, China; Dongting Lake Station for Wetland Ecosystem Research, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, Hunan, China.

Water quality is essential for lake systems, which are not only influenced by climate change and human activities but are also controlled by high-frequency hydrological rhythms. However, the differences in water quality during different hydrological periods have not been addressed in detail. Here, a 15-year water quality dataset (2004-2018) was selected to explore the variation trends and their relationship with water level in different hydrological periods in Dongting Lake, a typical river-connected lake in China. Read More

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September 2021

Column tests for evaluation of the enzymatic biodegradation capacity of hydrocarbons (C-C) contaminated soil.

Environ Pollut 2021 Aug 17;290:117986. Epub 2021 Aug 17.

TechnoRem Inc., 4701, rue Louis-B.-Mayer, Laval, Québec, H7P 6G5, Canada.

Though many studies pertaining to soil bioremediation have been performed to study the microbial kinetics in shake flasks, the process efficiency in column tests is seldom. In the present study, soil columns tests were carried out to study the biodegradation of soil contaminated with a high concentration of diesel (≈19.5 g/kg) petroleum hydrocarbons expressed as C-C. Read More

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Enzymatic biodegradation of highly p-xylene contaminated soil using cold-active enzymes: A soil column study.

J Hazard Mater 2021 Sep 2;423(Pt A):127099. Epub 2021 Sep 2.

INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec G1K 9A9, Canada. Electronic address:

Enzymatic bioremediation is a sustainable and environment-friendly method for the clean-up of contaminated soil and water. In the present study, enzymatic bioremediation was designed using cold-active enzymes (psychrozymes) which catalyze oxidation steps of p-xylene biodegradation in highly contaminated soil (initial concentration of 13,000 mg/kg). The enzymes were obtained via co-culture of two psychrophilic Pseudomonas strains and characterized by kinetic studies and tandem LC-MS/MS. Read More

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September 2021

Theoretical study of the reaction mechanism between Criegee intermediates and hydroxyl radicals in the presence of ammonia and amine.

Chemosphere 2021 Aug 13;287(Pt 1):131877. Epub 2021 Aug 13.

Environment Research Institute, Shandong University, Qingdao, 266237, PR China.

Criegee intermediates (CIs), formed in the ozonolysis process of unsaturated hydrocarbons, play an important role in the formation of OH radicals, sulfuric acid, and aerosols. In this study, quantum chemical calculations were carried out to investigate the mechanism for the reaction of Criegee intermediates [involving CHOO, CHCHOO and (CH)COO] with OH radicals at the level of CCSD(T)/jun-cc-pVTZ//M06-2X/6-311 + G(2d,2p). A third component, such as water, ammonia, or amines, was introduced to the reaction of CIs with OH to evaluate their catalytic effect. Read More

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Peat and bentonite amendments assisted soilless revegetation of oligotrophic and heavy metal contaminated nonferrous metallic tailing.

Chemosphere 2021 Aug 31;287(Pt 1):132101. Epub 2021 Aug 31.

School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Beijing Key Laboratory on Resource-Oriented Treatment of Industrial Pollutants, Beijing, 100083, China. Electronic address:

Soilless revegetation is a promising method for ecological restoration of nonferrous metallic tailings because of its low-cost and eco-friendliness. However, revegetation is difficult to construct in the tailings due to the high heavy metal concentration, poor water retention capacity and low fertility. In this study, soilless revegetation was successfully carried out by using peat and bentonite amendments. Read More

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Multiscale conformational dynamics probed by time-resolved circular dichroism from seconds to picoseconds.

Chirality 2021 Sep 14. Epub 2021 Sep 14.

Optics and Biosciences Laboratory, CNRS, INSERM, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France.

Time-resolved circular dichroism has been developed for a few decades to investigate rapid conformational changes in (bio)molecules. In our group, we have come up with several experimental set-ups allowing us to study pico-nanosecond local phenomena in molecular systems as well as much slower effects occurring in proteins and DNA in the folding processes. After an overview of the worldwide realizations in this domain, we present emblematic experiments that we have carried out, spanning time domain from picoseconds to seconds. Read More

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September 2021

Identification and molecular analysis of 17 novel variants of hydroxymethylbilane synthase in Chinese patients with acute intermittent porphyria.

Clin Genet 2021 Sep 14. Epub 2021 Sep 14.

Department of Endocrinology, The Second Hospital of Hebei Medical University.

A partial deficiency of the heme biosynthetic enzyme hydroxymethylbilane synthase (HMBS) leads to acute intermittent porphyria (AIP),a severe neurovisceral, autosomal dominant disorder with low penetrance.Even though in-depth investigations of the HMBS variants have been carried out by researchers in Britain, France,Russia,and Sweden,this area remains uninvestigated in China owing to the rarity and lack of clinical understanding of the disease.In this study,78 unrelated AIP patients revealed 48 different HMBS variants,of which 17 were novel. Read More

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September 2021

Comparison of carbon ion and photon reirradiation for recurrent glioblastoma.

Strahlenther Onkol 2021 Sep 14. Epub 2021 Sep 14.

Klinik für Strahlentherapie und Radioonkologie, Universitätsklinikum Marburg, Marburg, Germany.

Purpose: Purpose of this study was to investigate overall survival in recurrent glioblastoma treated with either carbon ion reirradiation or photon reirradiation.

Materials And Methods: In this retrospective study we evaluated 78 consecutive patients with recurrent IDH (Isocitrate dehydrogenase)-wildtype glioblastoma (38 patients carbon ion re-radiotherapy, 40 patients photon re-radiotherapy) treated with either carbon ion reirradiation or stereotactic photon reirradiation. 45 Gy (RBE; 15 fractions) carbon ion reirradiation (CIRT) or 39 Gy (13 fractions) photon reirradiation (FSRT) was administered, respectively. Read More

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September 2021

Early targeted patent ductus arteriosus treatment in premature neonates using a risk based severity score: study protocol for a randomised controlled trial (PDA RCT).

HRB Open Res 2020 25;3:87. Epub 2020 Nov 25.

Division of Neonatology, Stead Family Children's Hospital Stead Family Children's Hospital, Iowa, USA.

A patent ductus arteriosus (PDA) in preterm infants is associated with increased ventilator dependence and chronic lung disease, necrotizing enterocolitis, intraventricular haemorrhage, and poor neurodevelopmental outcome. Randomised controlled trials of early PDA treatment have not established a drop in the aforementioned morbidities. Those trials did not physiologically categorise PDA severity. Read More

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November 2020