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[Expression pattern of tumor-associated antigen MG7-Ag in gastric cancer: difference between Tibetans and Hans].

OBJECTIVE: To investigate the difference of the expression pattern of tumor-associated antigen MG(7)-Ag in gastric carcinoma between Hans and Tibetans. METHODS: Avidin-biotin peroxidase complex immunohistochemical methods were adapted to examine the expression pattern of MG(7)-Ag in 200 patients with gastric carcinoma, including 100 Tibetan patients and 100 Hans patients, 10 patients with chronic artrophic gastritis, 18 with gastric mucosal dysphasia and 10 subjects with normal gastric mucosa served as control. RESULTS: The positive rate for MG(7)-Ag was 92.4% and 88.7% in Tibetan and Han ga…

Trait-niche relationships accompany the increasing topological prominence of abundant bacteria along a glacial-lake chronosequence.

Accelerated glacial retreat driven by global warming has rapidly expanded glacial lakes on the Qinghai-Tibet Plateau (QTP), creating natural laboratories for recording the successional trajectories of alpine aquatic ecosystems. However, how trophic succession during lake development drives microbial functional reorganization and reshapes core network positions remains unclear. Focusing on 15 glacial lakes on the QTP, this study integrated 16S rRNA gene sequencing, functional gene prediction, and topological network analysis to compare the adaptive trajectories of abundant and rare bacterial ta…

Machine learning identifies plasma-derived exosomal miRNAs associated with low muscle mass in Tibetan patients with rheumatoid arthritis.

Sarcopenia poses a significant health burden in aging populations, particularly among patients with rheumatoid arthritis (RA), but current diagnostic approaches face limitations in early detection. This study aims to identify plasma-derived exosomal miRNA features associated with low muscle mass in Tibetan patients with RA. High-throughput sequencing identified 101 candidate dysregulated miRNAs in Tibetan patients with RA and low muscle mass, including 61 upregulated and 40 downregulated miRNAs, using exploratory thresholds of |log2 fold change| ≥ 0.58 and nominal P < 0.05. Most candidates did…

[Investigation and Analysis of Deacclimatization in Tibetan College Students Upon First Visit to Low-Altitude Regions].

OBJECTIVE: To investigate the correlation between changes in physiological indicators and altitude, age, and sex among ethnic Tibetan college students living in Xizang on long-term basis upon their first ever visit to a low-altitude region, thereby providing health guidance for long-term residents of high-altitude regions when they visit low-altitude environments for the first time. METHODS: A cluster random sampling method was used to select 170 healthy first-year college students of Tibetan ethnicity (85 males and 85 females), from Xizang Minzu University. The participants did not have any …

Formation and lipidomic analysis of flavor substances in Tibetan dried pork slice with four different baking methods.

The research analyzed changes in lipids and volatile flavor substances in Tibetan dried pork slice (TDPS) under four baking methods: air fryer, oven baking, smoking and charcoal baking, using electronic nose (E-nose), gas phase ion mobility spectrometry (GC-IMS) and liquid chromatography-tandem mass spectrometry (LC-MS/MS). The study found that contents of alcohols (25.22 %), esters (42.66 %) and aldehydes (34.13 %) in raw meat were higher than that in TDPS. A total of 38 volatile flavor compounds were identified in TDPS, with alcohols (10), esters (9), ketones (8), and aldehydes (7) as primar…

Comparative analysis of the clinical features of nonvalvular atrial fibrillation among Tibetan, Han, and Hui patients in Qinghai Province, China.

Global nonvalvular AF rises, impacting health severely. In Qinghai, China's diverse setting, studying AF among varied ethnic groups is crucial OBJECTIVES: The purpose of this study was to compares cardiac features in AF among Tibetan, Han, and Hui patients to develop tailored prevention and treatment strategies for this region, the goal was to enhance the understanding of AF and provide an empirical basis for developing prevention and treatment strategies specific to this region METHODS: This study included a total of 3445 Tibetan, Han, and Hui patients diagnosed with nonvalvular atrial fibril…

Brain functional changes in tibetan with obstructive sleep apnea hypopnea syndrome: A resting state fMRI study.

Tibetan is a major ethnic group living on the Qinghai-Tibet Plateau in China. Due to their high-altitude hypoxia environment, sleeping disorder and obstructive sleep apnea hypopnea syndrome (OSAHS) are more prone to occur. In this study, we investigated the brain structural and functional differences between Tibetans OSAHS patients and Tibetans healthy controls using high resolution three-dimensional T1 weighted magnetic resonance imaging (MRI) and resting state functional MRI. The analysis was based on voxel-based morphology, regional homogeneity (ReHo), amplitude of low-frequence fluctuation…

Longitudinal occurrence of methylmercury in terrestrial ecosystems of the Tibetan Plateau.

Methylmercury (MeHg), a neurotoxin, is a global concern because of its potential risk to human and ecological health. Elevated mercury (Hg) concentrations were recently reported in the Tibetan Plateau (TP) due to increasing Hg input from distant regions, yet little is known about MeHg production and distribution in the terrestrial ecosystems of the TP. Here, we report longitudinal occurrence of MeHg and the factors regulating net MeHg production in 23 grassland sites from eastern to western TP. The soil MeHg content varied from 0.002 to 0.058 ng g-1, with different distribution patterns betwee…

Heavy metals levels in fish from aquaculture farms and risk assessment in Lhasa, Tibetan Autonomous Region of China.

Fish is consumed as a common food by humans due to its nutritional and therapeutic benefits. However, they can accumulate toxic chemicals (such as heavy metals, persistent organic pollutants) from water and food chain. Very few studies have been investigated on heavy metal contents in fish from Tibetan Autonomous Region of China. In order to study heavy metals levels in fish from aquaculture farms and evaluate the risk that human consume fish in this area, we collected four types of aquaculture fish species (6 big-head carps, 5 grass carps, 5 carps and 5 tilapias) from fisheries around Lhasa c…

Reproductive Suppression Caused by Spermatogenic Arrest: Transcriptomic Evidence from a Non-Social Animal.

Reproductive suppression is an adaptive strategy in animal reproduction. The mechanism of reproductive suppression has been studied in social animals, providing an essential basis for understanding the maintenance and development of population stability. However, little is known about it in solitary animals. The plateau zokor is a dominant, subterranean, solitary rodent in the Qinghai-Tibet Plateau. However, the mechanism of reproductive suppression in this animal is unknown. We perform morphological, hormonal, and transcriptomic assays on the testes of male plateau zokors in breeders, in non-…

Differential expression and localization of immunity-related factors in main immune organs of yak.

The yak is an agricultural animal with strong disease resistance in Qinghai-Tibet Plateau. Immune organs are directly involved in the body's immune response and protect it from external aggression. In this study, we characterized and evaluated the main markers of interleukin (IL)-1β, IL-17a, hypoxia inducer factor-1 (HIF-1)α, and heat shock protein 90 (HSP90) in the lymph nodes, spleen, thymus, and hemal nodes of adult yaks using network informatics, molecular cloning, immunohistochemistry, real-time quantitative polymerase chain reaction (RT-qPCR), and western blotting. We first cloned the IL…

Cardiac echinococcosis secondary to hepatic echinococcosis: a rare case report.

Cystic echinococcosis (CE) is a zoonotic parasitic infection, which is very rare in developed countries. It can affect all internal organs, … c, while the physical tests and biochemical examinations were unremarkable. Her residential area in Tibet and previous medical history of hepatic echinococcosis gave us clues in the diagnosis of cardiac echinococcosis. Combined with computed tomography (CT) and magnetic resonance imaging (MRI), the cardiac echinococcosis was finally confirmed, and the c …

First molecular detection of Toxoplasma gondii in vegetable samples in China using qualitative, quantitative real-time PCR and multilocus genotyping.

Toxoplasma gondii infection is becoming increasing problem in China but there is no data concerning contamination of vegetables intended for consumption with this parasite. The aim of the present study was to investigate fresh vegetables originated from open markets located in the Xining City, the Qinghai-Tibet Plateau (QTP), P.R. China for their contamination with T. gondii. A total of 279 fresh vegetable samples were collected and analysed using real-time PCR assay targeting B1 gene and multilocus genotyping. T. gondii DNA was found in 10 (3.6%) samples tested; eight of them represented T. g…

Peste des petits ruminants in China since its first outbreak in 2007: A 10-year review.

Peste des petits ruminants (PPR) is a highly infectious disease of small ruminants and caused by small ruminant morbillivirus (SRMV), formerly called peste-des-petits-ruminants virus (PPRV). This disease is circulating in Africa (except most countries in southern Africa), the Arabian Peninsula, the Middle East, and Central, East and South-East Asia. Peste des petits ruminants is still regarded as an exotic disease in China, where its first outbreak was reported in the Ngari region of Tibet in 2007, but effectively controlled by slaughter, vaccination and animal movement restriction in PPR-infe…

Effects of Growing Location on the Contents of Main Active Components and Antioxidant Activity of Dasiphora fruticosa (L.) Rydb. by Chemometric Methods.

Traditional Chinese Medicine (TCM) is a very important raw material source for natural medicines in China. The content and activity of activ … y (P < 0.05). Contributed by their high active components and strong antioxidant activity, Bange in Tibet and Geermu in Qinghai Province were selected as a favorable growing location, respectively.

[Research and application progress of Lepidium meyenii（maca）].

Lepidium meyenii（maca）was a herbaceous plant of the family Cruciferae. It is native to the andes region of South America where the local people had been growing and consuming maca for centuries. The unique chemical composition and physiological function of maca were widely concerned worldwide. It was introduced to China in 2002, and were cultivated successfully in Yunnan, Tibet, Sichuan, Jilin and other places with a certain size. Maca contained not only rich nutrition such as protein, vitamin and mineral matter, but also lots of secondary metabolites as maca alkaloids, glucosinolates, volatil…

Macrolide-Resistance Selection in Tibetan Pigs with a High Load of Mycoplasma hyopneumoniae.

Currently, tylosin tartrate is the first-line treatment for Mycoplasma hyopneumoniae infections in China. However, the efficacy of tylosin tartrate and resistance to this treatment in M. hyopneumoniae infections of Tibetan pigs are unknown. In this study, we examined the prevalence of M. hyopneumoniae infection in Tibetan pigs at three intensive farms in Tibet, China. In addition, we investigated the efficacy of tylosin tartrate treatment for porcine enzootic pneumonia by monitoring M. hyopneumoniae DNA eradication dynamics and macrolide resistance (MR). Eighty-two of 450 (18.2%) Tibetan pigs …

Скруб Тифус: растущая угроза.

Scrub tyhus вызывается Orientia tsutsugamushi (бывший Рикитсия) и передается людям артхроподовым вектором семейства Тромбикулида (Leptotrombidium dliense and L. akamushi). Это самая распространенная новая Рикитциальная инфекция в Индии и многих других странах Юго-Восточной Азии. Фактически, скруб тифа географически ограничен Азиатско-Тихоокеанским регионом, миллиард человек подвергается риску, и каждый год сообщается о почти миллионе случаев. Скруб тифа, как представляется, особенно распределен в треугольнике Цутсугамуши, который распределен по очень обширной площади 13 млн. км2, примыкающей к

Совпадение в аннотации оригинала
Scrub typhus is caused by Orientia tsutsugamushi (formerly Rickettsia) and is transmitted to humans by an arthropod vector of the Trombiculi … na, the Philippines, tropical Australia in the south, and west through India, Pakistan, possibly to Tibet to Afghanistan, and southern parts of the USSR in the north. Eschar is the characteristic lesion that starts as a vesicular lesion at the site of mite feeding. Later, an ulcer forms with black necrotic center and an erythematous border along with re …

Genetic variation within coat color genes of MC1R and ASIP in Chinese brownish red Tibetan pigs.

Melanocortin receptor 1 (MC1R) and agouti signaling protein (ASIP) are two major genes affecting coat color phenotypes in mammals, and inactivation mutations in the MC1R gene are responsible for red coat color in European pig breeds. Conversely, the gain-of-function ASIP mutations block MC1R signaling and lead to the production of red pheomelanin. Chinese Tibetan pigs have three types of coat color phenotypes, including brownish red, solid black and black with patches of brownish red and white. Herein, we investigated variations of the MC1R and ASIP genes in Tibetan pigs. The results showed th…