422,646 results match your criteria data revealed


Development and validation of a novel ferroptosis-related gene signature for predicting prognosis and immune microenvironment in head and neck squamous cell carcinoma.

Int Immunopharmacol 2021 Jun 12;98:107789. Epub 2021 Jun 12.

Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China; Department of Hearing and Speech Science, Xinhua College, Sun Yat-Sen University, Guangzhou, China. Electronic address:

Ferroptosis plays an important role across variable cancer types. However, few studies have focused on the prognostic patterns of ferroptosis-related genes in HNSCC. Cohorts with mRNA expression profiles, as well as corresponding clinical data of HNSCC patients from published studies, were collected and consolidated from public databases. Read More

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Peroxiredomin-4 ameliorates lipotoxicity-induced oxidative stress and apoptosis in diabetic cardiomyopathy.

Biomed Pharmacother 2021 Jun 12;141:111780. Epub 2021 Jun 12.

Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, China. Electronic address:

Diabetic cardiomyopathy (DCM), one severe complication in the diabetes, leads to high mortality in the diabetic patients. However, the understanding of molecular mechanisms underlying DCM is far from completion. Herein, we investigated the disease-related differences in the proteomes of DCM based on db/db mice and verified the protective roles of peroxiredoxin-4 (Prdx4) in H9c2 cardiomyocytes treated by palmitic acid (PA). Read More

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Groundwater bacterial communities evolve over time in response to recharge.

Water Res 2021 May 26;201:117290. Epub 2021 May 26.

Aquatic Geomicrobiology, Institute of Biodiversity, Friedrich Schiller University Jena, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Germany. Electronic address:

Time series analyses are a crucial tool for uncovering the patterns and processes shaping microbial communities and their functions, especially in aquatic ecosystems. Subsurface aquatic environments are perceived to be more stable than surface oceans and lakes, due to the lack of sunlight, the absence of photosysnthetically-driven primary production, low temperature variations, and oligotrophic conditions. However, periodic groundwater recharge should affect the structure and succession of groundwater microbiomes. Read More

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Annual Costs Incurred in Managing Adverse Drug Reactions Attributable to Fixed-Dose Combination Highly Active Antiretroviral Therapy in an Outpatient Antiretroviral Clinic in Gauteng: A Budget Impact Analysis.

Value Health Reg Issues 2021 Jun 12;25:142-149. Epub 2021 Jun 12.

School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.

Objectives: This study aimed to identify adverse drug reactions (ADRs) attributable to tenofovir (TDF)- and zidovudine (AZT)-based fixed-dose combinations of highly active antiretroviral (ARV) therapy and subsequently determine the annual costs incurred in managing these ADRs and the budget implications in an outpatient ARV clinic in Mamelodi, Pretoria.

Methods: This retrospective cohort study reviewed deidentified clinical data for ADRs. Medical charts of human immunodeficiency virus-positive patients, who were receiving either TDF- or AZT-based fixed-dose combinations of ARV therapy, were analyzed. Read More

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Dietary potato intake and risks of type 2 diabetes and gestational diabetes mellitus.

Clin Nutr 2021 May 1;40(6):3754-3764. Epub 2021 May 1.

School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China; Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education of China, Xi'an, China. Electronic address:

Background & Aims: Evidence regarding associations between potato consumption and type 2 diabetes (T2D) and gestational diabetes mellitus (GDM) risks is accumulating. This study aims to synthesize the evidence by conducting a meta-analysis of available studies.

Methods: PubMed, Web of Science, EMBASE and Cochrane Library were searched (up to August 2020) to retrieve all eligible studies on the associations of interest. Read More

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Voxel-to-voxel predictive models reveal unexpected structure in unexplained variance.

Neuroimage 2021 Jun 12:118266. Epub 2021 Jun 12.

Department of Neuroscience, Medical University of South Carolina, Charleston, SC, USA. Electronic address:

Encoding models based on deep convolutional neural networks (DCNN) predict BOLD responses to natural scenes in the human visual system more accurately than many other currently available models. However, DCNN-based encoding models fail to predict a significant amount of variance in the activity of most voxels in all visual areas. This failure could reflect limitations in the data (e. Read More

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Trisomy 21 results in modest impacts on mitochondrial function and central carbon metabolism.

Free Radic Biol Med 2021 Jun 12;172:201-212. Epub 2021 Jun 12.

Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, USA; Linda Crnic Institute for Down Syndrome, School of Medicine, University of Colorado, Aurora, CO, USA. Electronic address:

Down syndrome (DS) is the most common genetic cause of intellectual disability. Mechanistically, oxidative stress and mitochondrial dysfunction are reported to be etiological factors for many of the DS-related comorbidities and have previously been reported in a number of in vitro and in vivo models of DS. The purpose of this study was to test for the presence of mitochondrial dysfunction in fibroblast cells obtained via skin biopsy from individuals with DS, and to assess the impact of trisomy 21 on central carbon metabolism. Read More

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Flow Structure and Particle Deposition Analyses for Optimization of a Pressurized Metered Dose Inhaler (pMDI) in a Model of Tracheobronchial Airway.

Eur J Pharm Sci 2021 Jun 12:105911. Epub 2021 Jun 12.

Institute of Lung Biology and Disease, Helmholtz Zentrum Muenchen, Neuherberg 85764, Germany; Comprehensive Pneumology Center, Member of the German Center for Lung Research, Max-Lebsche-Platz 31, Munich 81377, Germany. Electronic address:

Inhalation therapy plays an important role in management or treatment of respiratory diseases such asthma and chronic obstructive pulmonary diseases (COPDs). For decades, pressurized metered dose inhalers (pMDIs) have been the most popular and prescribed drug delivery devices for inhalation therapy. The main objectives of the present computational work are to study flow structure inside a pMDI, as well as transport and deposition of micron-sized particles in a model of human tracheobronchial airways and their dependence on inhalation air flow rate and characteristic pMDI parameters. Read More

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The role of sexual dimorphism in susceptibility to SARS-CoV-2 infection, disease severity, and mortality: facts, controversies and future perspectives.

Microbes Infect 2021 Jun 12:104850. Epub 2021 Jun 12.

Division of Endocrinology and Metabolism and Diabetes Center, First Department of Internal Medicine, Medical School, Aristotle University of Thessaloniki, AHEPA University Hospital, Thessaloniki, Greece. Electronic address:

Former studies have revealed intersex variability in immune response to infectious diseases, including Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Epidemiological surveillance of the ongoing pandemic has demonstrated a male vulnerability to morbidity and mortality, despite similar infection rates between the two sexes. Divergence in the frequency of comorbidities between males and females, differences in hormonal profile, chromosomal composition and gender behavior have all been proposed as potential causative factors. Read More

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Pharmacokinetic study of Ninjin'yoeito: Absorption and brain distribution of Ninjin'yoeito ingredients in mice.

J Ethnopharmacol 2021 Jun 12:114332. Epub 2021 Jun 12.

Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan; Preppers Co. Ltd., 1-23-17 Kitashinagawa, Shinagawa Ward, Tokyo, 140-0001, Japan; International Mass Imaging Center, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan; Department of Systems Molecular Anatomy, Institute for Medical Photonics Research, Preeminent Medical Photonics Education & Research Center, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan. Electronic address:

Ethnopharmacological Relevance: Ninjin'yoeito (NYT), a Japanese traditional Kampo medicine, has been reported to exert various clinical benefits such as relief from fatigue, malaise, anorexia, frailty, sarcopenia, and cognitive dysfunction. Recently, some review articles described the pharmacological effects of NYT and additionally indicated the possibility that multiple ingredients in NYT contribute to these effects. However, pharmacokinetic data on the ingredients are essential in addition to data on their pharmacological activities to accurately determine the active ingredients in NYT. Read More

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Cytokinins initiate secondary growth in the Arabidopsis root through a set of LBD genes.

Curr Biol 2021 Jun 8. Epub 2021 Jun 8.

Institute of Biotechnology, HiLIFE, University of Helsinki, Helsinki 00014, Finland; Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, and Viikki Plant Science Centre, University of Helsinki, Helsinki 00014, Finland. Electronic address:

During primary growth, plant tissues increase their length, and as these tissues mature, they initiate secondary growth to increase thickness. It is not known what activates this transition to secondary growth. Cytokinins are key plant hormones regulating vascular development during both primary and secondary growth. Read More

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Leptin receptor-expressing pericytes mediate access of hypothalamic feeding centers to circulating leptin.

Cell Metab 2021 Jun 8. Epub 2021 Jun 8.

Division of Endocrinology, Department of Medicine, McGill University Health Center Research Institute, McGill University, Montreal QC H4A 3J1, Canada. Electronic address:

Knowledge of how leptin receptor (LepR) neurons of the mediobasal hypothalamus (MBH) access circulating leptin is still rudimentary. Employing intravital microscopy, we found that almost half of the blood-vessel-enwrapping pericytes in the MBH express LepR. Selective disruption of pericytic LepR led to increased food intake, increased fat mass, and loss of leptin-dependent signaling in nearby LepR neurons. Read More

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ALS-linked mutations impair UBQLN2 stress-induced biomolecular condensate assembly in cells.

J Neurochem 2021 Jun 15. Epub 2021 Jun 15.

Department of Biology, Syracuse University, Syracuse, NY, 13244, USA.

Mutations in Ubiquilin-2 (UBQLN2), a ubiquitin-binding shuttle protein involved in several protein quality control processes, can lead to amyotrophic lateral sclerosis (ALS). We previously found that wild-type UBQLN2 forms dynamic, membraneless biomolecular condensates upon cellular stress, and undergoes liquid-liquid phase separation in vitro. However, the impact of ALS-linked mutations on UBQLN2 condensate formation in cells is unknown. Read More

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A computational method for learning disease trajectories from partially observable EHR data.

IEEE J Biomed Health Inform 2021 Jun 15;PP. Epub 2021 Jun 15.

Diseases can show different courses of progression even when patients share the same risk factors. Recent studies have revealed that the use of trajectories, the order in which diseases manifest throughout life, can be predictive of the course of progression. In this study, we propose a novel computational method for learning disease trajectories from EHR data. Read More

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Strengthening Pathology Capacity to Deliver Quality Cancer Care in Cities in LMICs.

JCO Glob Oncol 2021 Jun;7:917-924

American Society for Clinical Pathology, Chicago, IL.

Diagnostic pathology services for oncology health systems are essential; yet, surveys, observations, and hard data from across low- and middle-income countries have revealed that these services are almost always lacking adequate quality and often missing completely. The City Cancer Challenge Foundation (C/Can), the American Society for Clinical Pathology, and C/Can partner cities undertook intense analysis of their existing pathology services as part of a year-long assessment process including the specific formation of a pathology-focused team. Internal and external expert assessments identified sustainable solutions adapted to the local context and level of resources and created specific local implementation projects. Read More

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Organization of the central nervous system and innervation of cephalic sensory structures in the water bear Echiniscus testudo (Tardigrada: Heterotardigrada) revisited.

J Morphol 2021 Jun 15. Epub 2021 Jun 15.

Department of Zoology, Institute of Biology, Kassel, Germany.

The tardigrade brain has been the topic of several neuroanatomical studies, as it is key to understanding the evolution of the central nervous systems in Panarthropoda (Tardigrada + Onychophora + Arthropoda). The gross morphology of the brain seems to be well conserved across tardigrades despite often disparate morphologies of their heads and cephalic sensory structures. As such, the general shape of the brain and its major connections to the rest of the central nervous system have been mapped out already by early tardigradologists. Read More

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Clinical and epidemiological aspects of feline sporotrichosis caused by Sporothrix brasiliensis and in vitro antifungal susceptibility.

Vet Res Commun 2021 Jun 15. Epub 2021 Jun 15.

Department of Dermatological, Infectious, and Parasitic Diseases, School of Medicine (FAMERP), São José Do Rio Preto, São José do Rio Preto, Brazil.

Sporotrichosis is a subcutaneous mycosis resulting from the traumatic implantation of pathogenic Sporothrix species. In Brazil, zoonotic transmission plays an important role in the epidemiology of the disease, involving especially cats. The objective of this study was to isolate Sporothrix spp. Read More

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Protective Effect of Lutein/Zeaxanthin Isomers in Traumatic Brain Injury in Mice.

Neurotox Res 2021 Jun 15. Epub 2021 Jun 15.

Department of Animal Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey.

Previous studies revealed that oxidative stress and inflammation are the main contributors to secondary injury after traumatic brain injury (TBI). In an earlier study, we reported that lutein/zeaxanthin isomers (L/Zi) exert antioxidative and anti-inflammatory effects by activating the nuclear factor-kappa B (NF-κB) and nuclear factor-erythroid 2-related factor 2 (Nrf2) pathways. However, its precise role and underlying mechanisms were largely unknown after TBI. Read More

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Clinically significant body dissatisfaction: prevalence and association with depressive symptoms in adolescent boys and girls.

Eur Child Adolesc Psychiatry 2021 Jun 15. Epub 2021 Jun 15.

The Bouverie Centre, School of Psychology and Public Health, La Trobe University, Melbourne, 3056, Australia.

Body dissatisfaction is distressing and a risk factor for adverse consequences including eating disorders. However, data pertaining to the prevalence of body dissatisfaction in adolescence, a key period for its emergence, are lacking. This is a substantial barrier to tailored assessment and early intervention. Read More

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2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)-inducible poly-ADP-ribose polymerase (TIPARP/PARP7) catalytic mutant mice (TiparpH532A) exhibit increased sensitivity to TCDD-induced hepatotoxicity and lethality.

Toxicol Sci 2021 Jun 15. Epub 2021 Jun 15.

Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada.

2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)-inducible poly-ADP-ribose polymerase (TIPARP/PARP7), an aryl hydrocarbon receptor (AHR) target gene and mono-ADP-ribosyltransferase, acts as part of a negative feedback loop to repress AHR signaling. This process is prevented by a single H532A mutation in TIPARP that destroys its catalytic activity. We hypothesized that the loss of TIPARP catalytic activity would increase sensitivity to TCDD-induced toxicity in vivo. Read More

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Induced pluripotent stem cell-derived motor neurons of CMT type 2 patients reveal progressive mitochondrial dysfunction.

Brain 2021 Jun 15. Epub 2021 Jun 15.

Peripheral Neuropathy Research Group, Department of Biomedical Sciences, University of Antwerp, Antwerp, 2610, Belgium.

Axonal Charcot-Marie-Tooth neuropathies (CMT type 2) are caused by inherited mutations in various genes functioning in different pathways. The type of genes and multiplicity of mutations reflect the clinical and genetic heterogeneity in CMT2 disease, which complicates the diagnosis and has halted therapy development. Here, we used CMT2 patient-derived pluripotent stem cells (iPSCs) to identify common hallmarks of axonal degeneration shared by different CMT2 subtypes. Read More

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The discrepancy of aromatase expression in epicardial adipose tissue between CHD and non-CHD patients.

Cardiovasc J Afr 2021 Jun 7;32:1-4. Epub 2021 Jun 7.

Department of Cardiovascular Surgery, Shanxi Cardiovascular Hospital, Taiyuan, PR of China. Email:

Objectives: Epicardial adipose tissue (EAT) aromatase converts androstenedione and other adrenal androgens into oestrogens. The locally produced oestradiol (E) may have cardiovascular protective effects. Little is known about the relationship between EAT aromatase level and coronary heart disease (CHD). Read More

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Atezolizumab and bevacizumab-induced encephalitis in advanced hepatocellular carcinoma: Case report and literature review.

Medicine (Baltimore) 2021 06;100(24):e26377

Department of Hepatology and Gastroenterology.

Introduction: On the basis of the results of the IMBRAVE-150 trial, the combination of atezolizumab, a programmed cell death ligand 1 (PD-L1) antibody, as well as bevacizumab, a vascular endothelial growth factor (VEGF) antibody, represents a promising novel first-line therapy in patients with advanced hepatocellular carcinoma (HCC). Despite favorable safety data, serious adverse events have been described. However, central nervous system complications such as encephalitis have rarely been reported. Read More

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Cross-cultural adaptation and psychometric validation of the Korean version of rehabilitation complexity scale for the measurement of complex rehabilitation needs.

Medicine (Baltimore) 2021 Jun;100(24):e26259

TBI Rehabilitation Center, National Traffic Injury Rehabilitation Hospital, Gyeonggi-do.

Abstract: The aim of this study was to translate and cross-culturally adapt the Rehabilitation Complexity Scale-Extended version 13 (RCS-E v13) to develop the Korean version of the Rehabilitation Complexity Scale (KRCS), and to explore its reliability, and concurrent and construct validity.This research was an observational study of a series of consecutive rehabilitation inpatients who were previously assessed with KRCS and grouped with the Korean rehabilitation patient group version 1.1 (KRPG v1. Read More

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Rapid Increase of SARS-CoV-2 Variant B.1.1.7 Detected in Sewage Samples from England between October 2020 and January 2021.

mSystems 2021 Jun 15:e0035321. Epub 2021 Jun 15.

Division of Virology, National Institute for Biological Standards and Control, South Mimms, Potters Bar, Hertfordshire, UK.

SARS-CoV-2 variants with multiple amino acid mutations in the spike protein are emerging in different parts of the world, raising concerns regarding their possible impact on human immune response and vaccine efficacy against the virus. Recently, a variant named lineage B.1. Read More

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Biogeography, Assembly Patterns, Driving Factors, and Interactions of Archaeal Community in Mangrove Sediments.

mSystems 2021 Jun 15:e0138120. Epub 2021 Jun 15.

Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen, China.

Archaea are a major part of Earth's life. They are believed to play important roles in nutrient biogeochemical cycling in the mangrove. However, only a few studies on the archaeal community in mangroves have been reported. Read More

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The Experiences of Health Care Workers during the COVID-19 Pandemic in Korea: a Qualitative Study.

J Korean Med Sci 2021 Jun 14;36(23):e170. Epub 2021 Jun 14.

Division of Infectious Diseases, Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea.

Background: During the coronavirus disease 2019 (COVID-19) pandemic, health care workers (HCWs) have faced multiple physical and psychological challenges while carrying out their duties. In this study, we examined the experiences of specific groups of HCWs during the pandemic.

Methods: From 18 November to 30 December 2020, we conducted a qualitative study using semi-structured, face-to-face interviews with four groups of 14 HCWs in three cities (Seoul, Daegu, and Gwangju) in South Korea. Read More

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Factors affecting delay in diagnosis of colorectal cancer; a cross sectional study; from tertiary care hospital of Karachi Pakistan.

Int J Clin Pract 2021 Jun 15:e14529. Epub 2021 Jun 15.

Surgical unit 3, Dr. Ruth K.M Pfau Civil Hospital, Dow University of Health Sciences Karachi, Pakistan.

Background: Colorectal cancer incidence is increasing in our region. There is no specific CRC control program or national cancer registry in Pakistan. Previously no data has been published on presentation delay and diagnosis delay of CRC in our region. Read More

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Global data analysis supports smoking as the fundamental element associated with geographic gender disparities in hidradenitis suppurativa.

Br J Dermatol 2021 Jun 15. Epub 2021 Jun 15.

Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan.

Hidradenitis suppurativa (HS), or acne inversa, is a painful and recurrent inflammatory cutaneous disorder involving the terminal hair follicles of intertriginous and gluteal areas. Epidemiological studies have revealed geographic differences regarding the demographic and clinical characteristics of HS. The gender distribution of HS patients is diverse among different countries. Read More

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Assessment of the Awareness Level of Radiation Protection Among Radiographers Working in the Medical Imaging Wards of the Hospitals in Zanjan, Iran.

Radiat Prot Dosimetry 2021 Jun 15. Epub 2021 Jun 15.

Department of Radiology Technology, School of Paramedical Sciences, Zanjan University of Medical Sciences, Zanjan, Iran.

X-ray usage in medical diagnosis could have hurtful effects for both patient and medical imaging wards' personnel as a result of failure to follow radiation protection (RP) principles (shielding, distance and time) by radiographers. This cross-sectional descriptive-analytical study was carried out by valid and reliable online questionnaire, which was completed by 103 radiographers. Data were analyzed by using descriptive statistics (mean, standard deviation and frequency) and analytical statistics (Pearson's correlation coefficient test, Student's independent t-test and analysis of variance test) in the Statistical Package for Social Sciences version 20 (sig: P < 0. Read More

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