Результаты поиска

Toxicology and carcinogenesis studies of a binary mixture of 3,3',4,4',5-pentachlorobiphenyl (PCB 126) (Cas No. 57465-28-8) and 2,3',4,4',5-pentachlorobiphenyl (PCB 118) (Cas No. 31508-00-6) in female Harlan Sprague-Dawley rats (gavage studies).

DIOXIN TOXIC EQUIVALENCY FACTOR EVALUATION OVERVIEW: Polyhalogenated aromatic hydrocarbons such as 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) have the ability to bind to and activate the ligand-activated transcription factor, the aryl hydrocarbon receptor (AhR). Structurally related compounds that bind to the AhR and exhibit biological actions similar to TCDD are commonly referred to as "dioxin-like compounds" (DLCs). Ambient human exposure to DLCs occurs through the ingestion of foods containing residues of DLCs that bioconcentrate through the food chain. Due to their lipophilicity and persis

Voluntary work for the physical and mental health of older volunteers: A systematic review.

BACKGROUND: The increasing imbalance between the number of older adults not working and the number of adults in the age range of labour force participation (age range 20-64) has long been a fundamental public policy challenge in the Organization for Economic Co-operation and Development member countries. At a societal level, this growing imbalance raises serious concerns about the viability and funding of social security, pensions and health programmes. At an individual level, the concern is probably more that of aging well with the prospect of many years in retirement. Some research suggests

An Innovative Inexpensive Portable Pulmonary Edema Intubation Simulator.

AUDIENCE: This pulmonary edema intubation simulator is designed to instruct paramedics, medical students, emergency medicine residents, emergency medical services fellows, and attending physicians. INTRODUCTION: Acute pulmonary edema results in respiratory distress and may require endotracheal intubation. On occasion, pulmonary edema can result in copious amounts of pink, frothy sputum in the airway, complicating intubation by hindering the intubator's view. Although airway management skills are frequently taught in a simulation setting, the frothy sputum seen in acute pulmonary edema is not

Antiretrovirals for reducing the risk of mother-to-child transmission of HIV infection.

BACKGROUND: Antiretroviral drugs reduce viral replication and can reduce mother-to-child transmission of HIV either by lowering plasma viral load in pregnant women or through post-exposure prophylaxis in their newborns. In rich countries, highly active antiretroviral therapy (HAART) which usually comprises three drugs, has reduced the mother-to-child transmission rates to around 1-2%, but HAART is not always available in low- and middle-income countries. In these countries, various simpler and less costly antiretroviral regimens have been offered to pregnant women or to their newborn babies, o

Antiretrovirals for reducing the risk of mother-to-child transmission of HIV infection.

BACKGROUND: Antiretroviral drugs (ARV) reduce viral replication and can reduce mother-to-child transmission of HIV either by lowing plasma viral load in pregnant women or through post-exposure prophylaxis in their newborns. In rich countries, highly active antiretroviral therapy (HAART) has reduced the vertical transmission rates to around 1-2%, but HAART is not yet widely available in low and middle income countries. In these countries, various simpler and less costly antiretroviral regimens have been offered to pregnant women or to their newborn babies, or to both. OBJECTIVES: To determine

Proteasome Inhibitors as a Possible Therapy for SARS-CoV-2.

The COVID-19 global pandemic is caused by SARS-CoV-2, and represents an urgent medical and social issue. Unfortunately, there is still not a single proven effective drug available, and therefore, current therapeutic guidelines recommend supportive care including oxygen administration and treatment with antibiotics. Recently, patients have been also treated with off-label therapies which comprise antiretrovirals, anti-inflammatory compounds, antiparasitic agents and plasma from convalescent patients, all with controversial results. The ubiquitin-proteasome system (UPS) is important for the main

Finding genetically-supported drug targets for Parkinson's disease using Mendelian randomization of the druggable genome.

Parkinson's disease is a neurodegenerative movement disorder that currently has no disease-modifying treatment, partly owing to inefficiencies in drug target identification and validation. We use Mendelian randomization to investigate over 3,000 genes that encode druggable proteins and predict their efficacy as drug targets for Parkinson's disease. We use expression and protein quantitative trait loci to mimic exposure to medications, and we examine the causal effect on Parkinson's disease risk (in two large cohorts), age at onset and progression. We propose 23 drug-targeting mechanisms for Pa

агитационные рамки ИИ, связывающие языковые модели с электронными медицинскими записями, и график биомедицинских знаний для реальных доказательств.

Доступ к крупномасштабным клиническим и биомедицинским базам данных по-прежнему является серьезным препятствием для клинических и научных работников, требующим значительных вычислительных знаний. Агентские системы искусственного интеллекта, в которых крупные языковые модели (МПМ) организуют многоэтапное рассмотрение и выполнение запросов под интерактивным контролем человека, открывают возможности для демократизации доступа к данным и ускорения процесса получения доказательств. MethodsWe применяли Типовой контекстный протокол (МКП) для интеграции в рамках одного агентского рабочего процесса ста

Муриновая корреляция саркомы Эпштейна-Барра и саркомы Капози (MHV-68) представляет собой ценную модель для оценки чувствительности к антивирусным препаратам и взаимодействия в комбинаторных наркотиках.

Человеческие герпесвирусы представляют собой основные человеческие патогены. Особый интерес представляют члены подсемейства < < Герпесвирина > > , поскольку они вызывают хронические заболевания, такие, как рак, изменяя клеточные процессы и вводя клетки отдыха в непрерывно расширяющуюся фазу. Кроме того, в центре внимания постоянно находятся аутоиммунные заболевания, такие, как множественный склероз. Прототипический вирус человека - герпесвирус - вирус Эпштейна - Барра (ЭБВ) оказался трудно проанализировать в целях развития противовирусной терапии из-за проблем, связанных с распрост

Chemotherapy-induced peripheral neuropathy: evidence from genome-wide association studies and replication within multiple myeloma patients.

BackgroundBased on the possible shared mechanisms of chemotherapy-induced peripheral neuropathy (CIPN) for different drugs, we aimed to aggregate results of all previously published genome-wide association studies (GWAS) on CIPN, and to replicate them within a cohort of multiple myeloma (MM) patients.MethodsFollowing a systematic literature search, data for CIPN associated single nucleotide polymorphisms (SNPs) with P-values- 5 were extracted; these associations were investigated within a cohort of 983 German MM patients treated with bortezomib, thalidomide or vincristine. Cases were subjects

Why pharmacogenomic biomarkers for chemotherapy-induced peripheral neuropathy fail: a systematic review of genetic associations, replication, and clinical translation.

Chemotherapy-induced peripheral neuropathy (CIPN) is a common, dose-limiting toxicity of cancer treatment, yet reliable biomarkers to predict individual susceptibility remain lacking. Germline genetic variation has been widely investigated as a potential contributor to CIPN risk; however, the consistency and clinical utility of these associations remain unclear. We performed a systematic review of genetic association studies evaluating CIPN across neurotoxic chemotherapies. PubMed, Embase, Web of Science, and the Cochrane Library were searched (April 2025) for human studies assessing germline

Antibiotic-Free Gene Vectors: A 25-Year Journey to Clinical Trials.

Until very recently, the major use, for gene therapy, specifically of linear or circular DNA, such as plasmids, was as ancillary products for viral vectors' production or as a genetic template for mRNA production. Thanks to targeted and more efficient physical or chemical delivery techniques and to the refinement of their structure, non-viral plasmid DNA are now under intensive consideration as pharmaceutical drugs. Plasmids traditionally carry an antibiotic resistance gene for providing the selection pressure necessary for maintenance in a bacterial host. Nearly a dozen different antibiotic-f

Role of phytoconstituents in the management of COVID-19.

BackgroundCOVID-19, a severe global pandemic caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has emerged as one of the most threatening transmissible disease. As a great threat to global public health, the development of treatment options has become vital, and a rush to find a cure has mobilized researchers globally from all areas.Scope and approachThis review focuses on deciphering the potential of different secondary metabolites from medicinal plants as therapeutic options either as inhibitors of therapeutic targets of SARS-CoV-2 or as blockers of viral particles entry

SARS-CoV-2 drug resistance and therapeutic approaches.

In light of the transition of COVID-19 from a pandemic to an endemic phase, there is still a dire need to address challenges associated with drug resistance, particularly among immunocompromised and high-risk populations. This review explores the current state of research on SARS-CoV-2 drug resistance and underscores the ongoing need for effective therapeutic strategies. It critically evaluates existing knowledge on resistance mechanisms and therapeutic options, aiming to consolidate information and highlight areas for future research. By examining the complex interactions between the virus an

Активное воспроизведение ассоциаций в рамках исследовательской программы " Все мы " с использованием данных по ЭПЧ, предоставляемых пациентами и поставщиками.

Программа исследований < < Все мы > > объединяет общенациональную группу, располагающую электронными медицинскими данными (ЭПЧ) через посредство two :: дополнительные каналы: организация, предоставляющая услуги в области здравоохранения (ОЗЗП), при содействии со стороны ЕПЧ и при содействии пациентов, внесла вклад через порталные связи с пациентами. Ценность этих сравнительных исследований two Источники данных не подвергались систематической оценке. В этой связи мы сравнили PME и HPO EHR в том, что касается распространенности заболеваний, ассоциаций фенотип-фенотипов и копирования

Personalized Treatment Response in Progressive MS: Can the Patient's Profile Influence the Outcome?

BACKGROUND: Evidence from clinical trials providing average effects in populations is often used to forecast individualized patient outcomes similar to the trial patients. Multiple sclerosis (MS), known for notable heterogeneity in outcomes, makes the evaluation of potential heterogeneity of treatment effect (HTE) significant. Identifying factors that predict individual treatment response is crucial for optimizing patient care, and this study aimed to demonstrate the feasibility (proof of concept) of applying a statistical method to predict individual treatment response in MS trials. METHODS:

Epigenetic and Genetic Keys to Fight HPV-Related Cancers.

Cervical cancer ranks as the fourth most prevalent cancer among women globally, with approximately 600,000 new cases being diagnosed each year. The principal driver of cervical cancer is the human papillomavirus (HPV), where viral oncoproteins E6 and E7 undertake the role of driving its carcinogenic potential. Despite extensive investigative efforts, numerous facets concerning HPV infection, replication, and pathogenesis remain shrouded in uncertainty. The virus operates through a variety of epigenetic mechanisms, and the epigenetic signature of HPV-related tumors is a major bottleneck in our

Совпадение в полном тексте источника
… Sequence-Dependent Interaction of the Human Papillomavirus E2 Protein with the DNA Elements on Its DNA Replication Origin. Int. J. Mol. Sci. 2023;24:6555. doi: 10.3390/ijms24076555. 28. …

Всеобъемлющая оценка взаимодействия капсикум генотипа-окружающей среды с использованием моделей Biplot AMMI и GПЭ в различных поэтапных средах трансплантации.

Генотип х взаимодействие с окружающей средой (ГЭИ) создает серьезную проблему для выявления стабильных, высокоурожайных капсикум генотипов при неоднородных агроклиматических условиях. В настоящем исследовании дается оценка 96 Генотипы различных капсикум (Capsicum annuum L.) four поэтапная трансплантация среды в течение 2022 и 2023 в северо-западных Гималаях для разборки ГЭИ в целях получения фруктовой урожайности и ее составных характеристик. Совокупный анализ разницы показал, что она весьма значительна (p) ≤ 0.01) воздействие генотипа, окружающей среды и ГЭИ на все признаки, что свидетельству

Cancer immunotherapies: A hope for the uncurable?

The use of cancer immunotherapies is not novel but has been used over the decades in the clinic. Only recently have we found the true potential of stimulating an anti-tumor response after the breakthrough of checkpoint inhibitors. Cancer immunotherapies have become the first line treatment for many malignancies at various stages. Nevertheless, the clinical results in terms of overall survival and progression free survival were not as anticipated. Majority of cancer patients do not respond to immunotherapies and the reasons differ. Hence, further improvements for cancer immunotherapies are cruc

Identification of broad anti-coronavirus chemical agents for repurposing against SARS-CoV-2 and variants of concern.

Endemic human coronaviruses (hCoVs) 229E and OC43 cause respiratory disease with recurrent infections, while severe acute respiratory syndrome (SARS)-CoV-2 spreads across the world with impact on health and societies. Here, we report an image-based multicycle infection procedure with α-coronavirus hCoV-229E-eGFP in an arrayed chemical library screen of 5440 clinical and preclinical compounds. Toxicity counter selection and challenge with the β-coronaviruses OC43 and SARS-CoV-2 in tissue culture and human airway epithelial explant cultures (HAEEC) identified four FDA-approved compounds with ora