7,886 results match your criteria morphologically compared


Semen parameters in men recovered from COVID-19.

Asian J Androl 2021 May 11. Epub 2021 May 11.

The First Affiliated Hospital of USTC, Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Diseases, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China.

The novel coronavirus disease (COVID-19) pandemic is emerging as a global health threat and shows a higher risk for men than women. Thus far, the studies on andrological consequences of COVID-19 are limited. To ascertain the consequences of COVID-19 on sperm parameters after recovery, we recruited 41 reproductive-aged male patients who had recovered from COVID-19, and analyzed their semen parameters and serum sex hormones at a median time of 56 days after hospital discharge. Read More

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Wild-type α-synuclein inherits the structure and exacerbated neuropathology of E46K mutant fibril strain by cross-seeding.

Proc Natl Acad Sci U S A 2021 May;118(20)

Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 201210, China;

Heterozygous point mutations of α-synuclein (α-syn) have been linked to the early onset and rapid progression of familial Parkinson's diseases (fPD). However, the interplay between hereditary mutant and wild-type (WT) α-syn and its role in the exacerbated pathology of α-syn in fPD progression are poorly understood. Here, we find that WT mice inoculated with the human E46K mutant α-syn fibril (hE46K) strain develop early-onset motor deficit and morphologically different α-syn aggregation compared with those inoculated with the human WT fibril (hWT) strain. Read More

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Verrucous Carcinoma of the Esophagus Is A Genetically Distinct Subtype of Esophageal Squamous Cell Carcinoma.

Histopathology 2021 May 7. Epub 2021 May 7.

Department of Pathology.

Aims: Esophageal verrucous carcinoma (VSCC) is a rare and morphologically distinct type of esophageal squamous cell carcinoma (SCC). Diagnosing VSCC on biopsy material is challenging given the lack of significant atypia and the presence of keratinizing epithelium and exophytic growth. The molecular pathogenesis of VSCC remains unclear. Read More

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Two new species of Hypostomus suckermouth armored catfishes (Teleostei: Loricariidae) from Central Brazil.

J Fish Biol 2021 May 6. Epub 2021 May 6.

Departamento de Zoologia, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, DF, Brazil.

We describe two new endemic Hypostomus species from central Brazil, which were previously identified as genetically distinct lineages in a recent genomic study that recommended their testing and potential description based on morphological data. A machine learning classification procedure (random forest) was used to investigate morphological variation and identify putatively diagnostic characters for these candidate species, and revealed that each is morphologically distinct. The new species Hypostomus cafuringa is characterized by small size, dark spots under a light background color, deeper caudal peduncle, and shorter first ray of the pectoral-fin and base of the dorsal-fin when compared to congeneric species from the region. Read More

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Morphological and molecular identification of two new species (Ascomycota, Pleosporaceae) in section Radicina from China.

MycoKeys 2021 9;78:187-198. Epub 2021 Apr 9.

Institute of Plant Protection, Guangxi Academy of Agricultural Sciences and Guangxi Key Laboratory of Biology for Crop Diseases and Insect Pests, Nanning, Guangxi, 530007, China Institute of Plant Protection, Guangxi Academy of Agricultural Sciences and Guangxi Key Laboratory of Biology for Crop Diseases and Insect Pests Nanning China.

The fungal genus was distributed widely and found in different habitats such as plant or indoor environment. During an investigation into this genus in China, two new species, and were respectively isolated from diseased leaves of and , which both belonged to Umbelliferae. Phylogenetically, they were determined as new species belonging in the section Radicina of based on the combined four gene fragments of ITS, , and . Read More

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Integrative taxonomy uncovers a new Culicoides (Diptera: Ceratopogonidae) biting midge species from Thailand.

Acta Trop 2021 May 2:105941. Epub 2021 May 2.

Department of Biology, Faculty of Science, Mahasarakham University, Kantharawichai District, Maha Sarakham 44150, Thailand.

Fully understanding biodiversity often requires an integrated approach especially for small insects because species diagnostic morphological characters are limited. In this study, morphological characters and DNA barcodes were used to examine previously recognized genetically divergent lineages detected in the biting midge, Culicoides arakawae (Arakawa), from Thailand. Morphological examinations revealed that specimens belonging to one lineage are morphologically different from C. Read More

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Study of the ultrastructure of Enterococcus faecalis and Streptococcus mutans incubated with salivary antimicrobial peptides.

Clin Exp Dent Res 2021 May 5. Epub 2021 May 5.

Departamento de Microbiología y Parasitología, Facultad de Medicina, Col. Universidad Nacional Autónoma de México, Mexico City, Mexico.

Objectives: Enterococcus faecalis has been associated with root canal infections, while Streptococcus mutans has a central role in the etiology of dental caries. One of the main reasons of endodontic failure has been associated to the presence of E. faecalis and the formation of biofilms. Read More

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Immunohistochemical and Genetic Labeling of Hairy and Glabrous Skin Innervation.

Curr Protoc 2021 May;1(5):e121

Vollum Institute, Oregon Health & Science University, Portland, Oregon.

Cutaneous innervation is an essential component of the mammalian sensory nervous system. During development, genetically and morphologically diverse subtypes of sensory neurons use distinct molecular pathways to innervate end organs or form free nerve endings in glabrous and hairy skin. Peripheral neurons can be damaged by acute injury or degenerate due to chronic conditions including diabetes and chemotherapy, leading to peripheral neuropathy. Read More

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Effect of sodium alginate molecular structure on electrospun membrane cell adhesion.

Mater Sci Eng C Mater Biol Appl 2021 May 26;124:112067. Epub 2021 Mar 26.

Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genoa, Italy. Electronic address:

Alginate-based electrospun nanofibers prepared via electrospinning technique represent a class of materials with promising applications in the biomedical and pharmaceutical industries. However, to date, the effect of alginate molecular mass and block composition on the biological response of such systems remains to some extent unclear. As such, in the present work, three alginates (i. Read More

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Growth restricted placentas show severely reduced volume of villous components with perivascular myofibroblasts.

Placenta 2021 Apr 20;109:19-27. Epub 2021 Apr 20.

LMU Munich, Department of Anatomy II, Pettenkoferstr. 11, 80336 Munich, Germany. Electronic address:

Introduction: The restricted placental growth in IUGR is associated with a simultaneous weight and volume restriction for the placental villous tree. It is unknown whether the whole villous tree or only specific parts of it are growth restricted in IUGR. In the case of uniform growth restriction of the villous tree, IUGR placentas could be interpreted as symmetrically smaller versions of normal placentas. Read More

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A tale of two morphs: developmental patterns and mechanisms of seed coat differentiation in the dimorphic diaspore model Aethionema arabicum (Brassicaceae).

Plant J 2021 May 4. Epub 2021 May 4.

Department of Biological Sciences, Royal Holloway University of London, Egham, TW20 0EX, United Kingdom.

The developmental transition from a fertilised ovule to a dispersed diaspore (seed or fruit) involves complex differentiation processes of the ovule's integuments leading to the diversity in mature seed coat structures in angiosperms. In this study, comparative imaging and transcriptome analysis were combined to investigate the morph-specific developmental differences during outer seed coat differentiation and mucilage production in Aethionema arabicum, the Brassicaceae model for diaspore dimorphism. One of the intriguing adaptations of this species is the production and dispersal of morphologically distinct, mucilaginous and non-mucilaginous diaspores from the same plant (dimorphism). Read More

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Dynamics of particle retention and physiology in Euonymus japonicus Thunb. var. aurea-marginatus Hort. with severe exhaust exposure under continuous drought.

Environ Pollut 2021 Apr 27;285:117194. Epub 2021 Apr 27.

School of Landscape Architecture, Zhejiang A&F University, Hangzhou, 311300, China.

Frequent drought events and particulate matter pollution from vehicular exhaust seriously affect urban plant growth and provisioning of ecological services. Yet, how plants respond physiologically and morphologically to these two combined stressors remains unknown. Here, we assessed particle retention dynamics and plant morphology and physiology of Euonymus japonicus Thunb. Read More

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On the diversity and clinical importance of Acanthamoeba spp. from Group 1.

Authors:
Daniele Corsaro

Parasitol Res 2021 Apr 30. Epub 2021 Apr 30.

CHLAREAS, 12, rue du Maconnais, F-54500, Vandoeuvre-lès-Nancy, France.

Group 1 acanthamoebae are morphologically and phylogenetically distinct from all other Acanthamoeba species. They include five species, each labelled by its genotype: A. astronyxis (T7), A. Read More

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Whole-exome Sequencing of Epstein-Barr Virus-associated Pulmonary Carcinoma With Low Lymphocytic Infiltration Shows Molecular Features Similar to Those of Classic Pulmonary Lymphoepithelioma-like Carcinoma: Evidence to Support Grouping Together as One Disease Entity.

Am J Surg Pathol 2021 Apr 29. Epub 2021 Apr 29.

Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital School of Medicine Institute of Biomedical Informatics Department of Biotechnology and Laboratory Science in Medicine Institute of Clinical Medicine, National Yang Ming Chiao Tung University Department of Pathology, Taipei Hospital, Ministry of Health and Welfare, Taipei, Taiwan.

Pulmonary lymphoepithelioma-like carcinoma (LELC) is a distinct type of Epstein-Barr virus (EBV)-associated non-small cell carcinoma characterized by a syncytial growth pattern with heavy lymphocytic infiltration. We recently identified a group of non-small cell carcinomas, which are also associated with EBV but lack significant lymphocytic infiltration. These EBV-associated pulmonary carcinomas with low lymphocytic infiltration morphologically resemble nonkeratinizing squamous cell carcinoma, but their patient characteristics are more similar to those of LELC, including female sex and nonsmoking status. Read More

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A Revised Phylogeny of the Clade Reveals Cryptic Species.

Plants (Basel) 2021 Apr 20;10(4). Epub 2021 Apr 20.

Section for GeoGenetics, GLOBE Institute, University of Copenhagen, Øster Farimagsgade 5, bygning 7, DK-1353 Copenhagen, Denmark.

The genus is taxonomically and phylogenetically challenging due to complex genomes, polyploidization and an extensive historical nomenclature, potentially hiding cryptic taxa. A straightforward interpretation of phylogenetic relationships within the section is further hindered by dominant but outdated concepts on historically identified hybrid taxa. is traditionally considered to be of hybrid origin, but the evidence for this is weak. Read More

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Aromatic Profile Variation of Essential Oil from Dried Makwhaen Fruit and Related Species.

Plants (Basel) 2021 Apr 19;10(4). Epub 2021 Apr 19.

Plant Bioactive Compound Laboratory (BAC Lab), Department of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand.

The aim of this research is to evaluate the relationship between genotype, phenotype, and chemical profiles of essential oil obtained from available spp. Three specimens of makhwaen (MK) distributed in Northern Thailand were genetically and morphologically compared with other spices, known locally as huajiao (HJ) and makwoung (MKO), respectively. HJ was taxonomically confirmed as while MKO and MK were identified as and . Read More

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Chronic Inflammation Impairs Male Fertility-A Case-Control Study in Ulcerative Colitis Patients.

J Clin Med 2021 Apr 2;10(7). Epub 2021 Apr 2.

Department of Gastroenterology with IBD Unit of Clinical Hospital 2 in Rzeszow, 35-301 Rzeszow, Poland.

Recent evidence indicates that a systemic state of inflammation may exert a negative effect on male fertility. The aim of this study is to evaluate sperm quality parameters in male patients with ulcerative colitis (UC). Between December 2019 and December 2020 semen analyses are performed in 50 patients with UC in clinical remission. Read More

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Mycoplasma induced Steven-Johnson Syndrome/Toxic Epidermal Necrolysis: Case-control analysis of a cohort managed in a specialized center.

J Am Acad Dermatol 2021 Apr 26. Epub 2021 Apr 26.

Department of Dermatology, Singapore General Hospital, Singapore. Electronic address:

Background: Mycoplasma pneumoniae (MP) infection is associated with extrapulmonary complications such as Stevens-Johnson syndrome (SJS)/Toxic epidermal necrolysis(TEN).

Objective: We evaluated the differences in epidemiology, clinical characteristics, and disease outcomes between drug-induced and mycoplasma related SJS/TEN.

Methods: All patients with SJS/TEN admitted to our center between 2003 and 2016 inclusive were treated under a standardized protocol. Read More

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Hepatoid Adenocarcinoma of the Stomach: Current Perspectives and New Developments.

Front Oncol 2021 12;11:633916. Epub 2021 Apr 12.

Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, China.

Hepatoid adenocarcinoma of the stomach (HAS) is a rare malignant tumor, accounting for only 0.17-15% of gastric cancers. Patients are often diagnosed at an advanced disease stage, and their symptoms are similar to conventional gastric cancer (CGC) without specific clinical manifestation. Read More

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Valproic Acid-Induced Changes of 4D Nuclear Morphology in Astrocyte Cells.

Mol Biol Cell 2021 Apr 28:mbcE20080502. Epub 2021 Apr 28.

Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA.

Histone deacetylase inhibitors, such as valproic acid (VPA), have important clinical therapeutic and cellular reprogramming applications. They induce chromatin re-organization that is associated with altered cellular morphology. However, there is a lack of comprehensive characterization of VPA-induced changes of nuclear size and shape. Read More

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Description of Paraxiopsis/ kensleyi/ n. sp., a new axiid lobster from the Gulf of Mexico (Crustacea: Decapoda: Axiidea).

Authors:
Darryl L Felder

Zootaxa 2021 Apr 27;4965(1):zootaxa.4965.1.6. Epub 2021 Apr 27.

Department of Biology, University of Louisiana at Lafayette, Lafayette 70504-3602 USA.

A new species of axiid was discovered during sampling offshore deep banks on the middle continental shelf off Louisiana. Paraxiopsis kensleyi n. sp. Read More

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Proteomic fingerprinting facilitates biodiversity assessments in understudied ecosystems: a case study on integrated taxonomy of deep sea copepods.

Mol Ecol Resour 2021 Apr 26. Epub 2021 Apr 26.

German Centre for Marine Biodiversity Research (DZMB), Senckenberg Research Institute, Hamburg, Germany.

Accurate and reliable biodiversity estimates of marine zooplankton are a pre-requisite to understand how changes in diversity can affect whole ecosystems. Species identification in the deep sea is significantly impeded by high numbers of new species and decreasing numbers of taxonomic experts, hampering any assessment of biodiversity. We used in parallel morphological, genetic, and proteomic characteristics of specimens of calanoid copepods from the abyssal South Atlantic to test if proteomic fingerprinting can accelerate estimating biodiversity. Read More

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Morphological description and molecular characterisation of a new species of Leach, 1818 (Crustacea: Isopoda: Cymothoidae) from India.

Int J Parasitol Parasites Wildl 2021 Apr 24;14:321-328. Epub 2021 Mar 24.

Department of Aquatic Biology & Fisheries, University of Kerala, Karyavattom, Thiruvananthapuram, 695581, Kerala, India.

A fish parasitic isopod recently reported from India as Bleeker, 1857, was re-examined and morphologically compared to five closely related species: Leach, 1818, Williams and Bunkley-Williams, 1986, Bleeker, 1857, Welicky and Smit, 2019 and Bariche and Trilles, 2006. This species was sequenced and compared to other known species based on mitochondrial cytochrome oxidase subunit I (COI) gene fragments Both morphological and molecular data corroborate that the species parasitising the clupeid fish (Valenciennes, 1847) from India should be recognised as a new species, and we describe n. sp. Read More

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Genetic diversity of axon degenerative mechanisms in models of Parkinson's disease.

Neurobiol Dis 2021 Apr 20;155:105368. Epub 2021 Apr 20.

Department of Neurobiology, University of Massachusetts Medical School, Worcester, MA 01655, USA.

Parkinson's disease (PD) is the most common form of neurodegenerative movement disorder, associated with profound loss of dopaminergic neurons from the basal ganglia. Though loss of dopaminergic neuron cell bodies from the substantia nigra pars compacta is a well-studied feature, atrophy and loss of their axons within the nigrostriatal tract is also emerging as an early event in disease progression. Genes that drive the Wallerian degeneration, like Sterile alpha and toll/interleukin-1 receptor motif containing (Sarm1), are excellent candidates for driving this axon degeneration, given similarities in the morphology of axon degeneration after axotomy and in PD. Read More

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Regional and ethnic differences in semen quality and reproductive hormones in Russia: a Siberian population-based cohort study of young men.

Andrology 2021 Apr 21. Epub 2021 Apr 21.

Federal Research Center 'Institute of Cytology and Genetics', Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia.

Background: This is the first large-scale Russian study describing semen quality and reproductive hormone levels among young men.

Objectives: The aim of the study was to compare semen quality and reproductive hormone levels in young men of four cities and three ethnic groups living in the Siberian region of Russia and to find out ethnic or environmental reasons for regional differences.

Materials And Methods: The study population consisted of 1,291 young men from Novosibirsk, Kemerovo, Ulan-Ude and Yakutsk, including 1,013 men of three most numerous ethnic groups: Slavs, Buryats and Yakuts. Read More

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Identification of Bloodmeals from Sand Flies (Diptera: Psychodidae) Collected in the Parque Nacional do Viruá, State of Roraima, Brazil.

J Med Entomol 2021 Apr 22. Epub 2021 Apr 22.

Grupo de Estudos em Leishmanioses, Instituto René Rachou - Fiocruz Minas, Av. Augusto de Lima, Barro Preto, Belo Horizonte - Minas Gerais, Brasil.

The transmission of pathogens that cause leishmaniases occurs by the bite of female sand flies (Diptera: Psychodidae) in their vertebrate hosts, which makes the identification of their bloodmeal sources an important step for the control and epidemiology of these diseases. In Brazil, the state of Roraima has a great diversity of sand flies, vertebrate hosts, and protozoan Leishmania, but little is known about the host blood-feeding preferences of sand flies. Thus, we evaluated the bloodmeal sources of sand flies collected from their sylvatic habitats in Parque Nacional do Viruá, Roraima. Read More

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Streptomyces brasiliscabiei, a new species causing potato scab in south Brazil.

Antonie Van Leeuwenhoek 2021 Apr 21. Epub 2021 Apr 21.

Laboratório de Bacteriologia Vegetal, Instituto Biológico, Centro Avançado em Proteção de Plantas e Sanidade Animal-CAPSA, Alameda Dos Vidoeiros, 1097, Gramado, Campinas, SP, CEP:13101-680, Brazil.

This study aimed to characterize six Streptomyces strains associated with potato scab in south Brazil through polyphasic taxonomy involving morphology, pathogenicity and genetic features. These strains were compared with other potato-scab Streptomyces species mainly S. europaeiscabiei, S. Read More

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Abdominal dioctophymosis in a domestic cat from the Peruvian rainforest confirmed morphologically and molecularly.

Parasitol Int 2021 Apr 18;83:102359. Epub 2021 Apr 18.

Laboratorio de Epidemiologia y Economía Veterinaria, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Av. Circunvalación 2800, San Borja. Lima, Peru.

A case of abdominal dioctophymosis in a domestic cat was found in San Juan Bautista district, the Peruvian rainforest, in the Loreto department of Peru. The pet went to a veterinary clinic for a routine ovariohysterectomy during which a large nematode was found in the abdominal cavity. The nematode was morphologically identified as an adult female of Dioctophyme sp. Read More

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Fungal Endophytes of Tahiti Lime ( × ) and Their Potential for Control of J. H. Simmonds Causing Anthracnose.

Front Bioeng Biotechnol 2021 1;9:650351. Epub 2021 Apr 1.

Department of Biological Sciences, Eafit University, Medellín, Colombia.

is one of the causal agents of anthracnose in several crops, and of post-flowering fruit drop (PFD) in citrus and key lime anthracnose (KLA). The pathogen normally attacks flowers, causing lesions only in open flowers. Under very favorable conditions, however, it can also affect flower buds and small fruits, causing complete rotting of the fruit and a premature fall, resulting in major economic crop losses. Read More

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Association of Non-Hodgkin lymphoma risk with CYP1A1, GSTM1 and GSTT1 gene variants, in tobacco addicted patients of Pashtun ethnicity of Khyber Pakhtunkhwa, Pakistan.

Pak J Pharm Sci 2020 Nov;33(6):2617-2624

Department of Zoology, University of Peshawar, Peshawar, Pakistan.

The current study determines the possible antitumor and immunomodulatory effects of thymosin against the in vivo and in vitro growth of tumor-derived cell line in mice. Peritoneal phagocytes count, Ehrlich ascites tumor (EAT) cells, T- lymphocytes, and B- lymphocytes activities were determined. In addition, serum level of interleukin 2 (IL-2) and liver functions were measured. Read More

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November 2020