Humans ; Female ; Tibet ; Kashin-Beck Disease/epidemiology* ; China ; Metabolomics

Objective To study the pathological types,expression of mismatch repair protein,human epidermal growth factor receptor 2(HER2),and Pan-TRK,and Epstein-Barr virus(EBV)infection in patients with colorectal cancer resected in Tibet. Methods A total of 79 patients with colorectal cancer resected in Tibet Autonomous Region People's Hospital from December 2013 to July 2021 were enrolled in this study.The clinical and pathological data of the patients were collected.The expression of mismatch repair protein,HER2,and Pan-TRK was detected by immunohistochemical(IHC)staining,and detection of HER2 gene by fluorescence in situ hybridization(FISH)in the patients with HER2 IHC results of 2+ or above.EBV was detected by in situ hybridization with EBV-encoded small RNA. Results A total of 79 colorectal cancer patients were included in this study,with the male-to-female ratio of 1.26:1 and the mean age of(57.06±12.74)years(24-83 years).Among them,4 patients received preoperative neoadjuvant therapy.Colonic cancer and rectal cancer occurred in 57(57/79,72.15%,including 31 and 26 in the right colon and left colon,respectively)and 22(22/79,27.85%)patients,respectively.The maximum diameter of tumor varied within the range of 1-20 cm,with the mean of(6.61±3.33)cm.Among the 79 colorectal cancer patients,75(75/79,94.94%)patients showed adenocarcinoma.Lymph node metastasis occurred in 12(12/21,57.14%)out of the 21 patients with severe tumor budding,13(13/23,56.52%)out of the 23 patients with moderate tumor budding,and 2(2/31,6.45%)out of the 31 patients with mild tumor budding,respectively.The lymph node metastasis rate showed differences between the patients with severe/moderate tumor budding and the patients with mild tumor budding(all P<0.001).The IHC staining showed that mismatch repair protein was negative in 10(10/65,15.38%)patients,including 5 patients with both MSH2 and MSH6 negative,4 patients with both MLH1 and PMS2 negative,and 1 patient with MSH6 negative.Pan-TRK was negative in 65 patients.The IHC results of HER2 showed 0 or 1+ in 60 patients and 2+ in 5 patients.FISH showed no positive signal in the 5 patients with HER2 IHC results of 2+.The detection with EBV-encoded small RNA showed positive result in 1(1/65,1.54%)patient. Conclusions Non-specific adenocarcinoma of the right colon is the most common in the patients with colorectal cancer resected in Tibet,and 15% of the patients showed mismatch repair protein defects.EBV-associated colorectal carcer is rare,Pan-TRK expression and HER2 gene amplification are seldom.The colorectal cancer patients with moderate and severe tumor budding are more likely to have lymph node metastasis.
Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Adenocarcinoma ; Biomarkers, Tumor/genetics* ; Colorectal Neoplasms/pathology* ; DNA Mismatch Repair ; DNA-Binding Proteins/genetics* ; Epstein-Barr Virus Infections/diagnosis* ; Herpesvirus 4, Human/metabolism* ; In Situ Hybridization, Fluorescence ; Lymphatic Metastasis ; Tibet ; Young Adult ; Aged, 80 and over

In this study, a single base editing system was used to edit the FecB and GDF9 gene to achieve a targeted site mutation from A to G and from C to T in Ouler Tibetan sheep fibroblasts, and to test its editing efficiency. Firstly, we designed and synthesized sgRNA sequences targeting FecB and GDF9 genes of Ouler Tibetan sheep, followed by connection to epi-ABEmax and epi-BE4max plasmids to construct vectors and electrotransfer into Ouler Tibetan sheep fibroblasts. Finally, Sanger sequencing was performed to identify the target point mutation of FecB and GDF9 genes positive cells. T-A cloning was used to estimate the editing efficiency of the single base editing system. We obtained gRNA targeting FecB and GDF9 genes and constructed the vector aiming at mutating single base of FecB and GDF9 genes in Ouler Tibetan sheep. The editing efficiency for the target site of FecB gene was 39.13%, whereas the editing efficiency for the target sites (G260, G721 and G1184) of GDF9 gene were 10.52%, 26.67% and 8.00%, respectively. Achieving single base mutation in FecB and GDF9 genes may facilitate improving the reproduction traits of Ouler Tibetan sheep with multifetal lambs.
Animals ; Sheep/genetics* ; Gene Editing ; Tibet ; Mutation ; Phenotype ; Mutagenesis, Site-Directed

To analyze the epidemiological characteristics of pulmonary tuberculosis (PTB) in Motuo County from 2012 to 2021 and provide evidence for the prevention and control of PTB. A total of 223 cases of PTB were reported from 2012 to 2021 in Motuo County, with an average annual reported incidence rate of 171.39/100 000. Joinpoint regression model analysis showed that the average decline rate was 9.2% (P<0.001) from 2012 to 2021. Among the various types of PTB patients reported from 2012 to 2021, there were 69 cases of etiologic-positive cases which increased from 28.57% to 52.63%. Results from the circular distribution methods showed that there was no obvious peak time of PTB in Motuo County. There was no statistical difference in the average annual incidence of PTB between different genders (χ²=0.108, P=0.743). Among all age groups, the 20-29 years group had the highest proportion (26.91%, 60/223). The Monpa ethnic group (153 cases, 68.61%) had the largest number of cases, followed by the Lhoba people (44 cases, 19.73%) and the Tibetan (22 cases, 9.87%). Farmers (168 cases, 75.34%) had the highest occupational composition ratio, followed by students (40 cases, 17.94%). The main detection methods of PTB were clinical consultation and transferring consultation. Overall, the incidence rate of PTB decreased from 2012 to 2021. The majority of PTB patients were young adults with high transmission risk. It is necessary to pay more attention to the key populations and strengthen the comprehensive prevention and control for reducing the risk of PTB.
Young Adult ; Humans ; Male ; Female ; Adult ; Tibet/epidemiology* ; Tuberculosis, Pulmonary/prevention & control* ; Incidence ; Students ; Ethnicity ; China/epidemiology*

Objective: To explore the vaccination coverage of the 13-valent pneumococcal conjugate vaccine (PCV13) in China from 2017 to 2021. Methods: Using the reported number of PCV13 administrated doses from 2017 to 2021 and the population data from 31 provinces in China, which were collected by the Immunization Program Information System and summarized data at different levels (prefecture, provincial, and national). Collecting batch release data of PCV13 during the same period through the official website of the National Institutes for Food and Drug Control. The average coverage level of PCV13 was calculated by comparing the number of PCV13 vaccinations reported annually to the number of births in that year, and the spatial auto-correlation analysis was conducted in 2021 at the prefecture level. The coverage of PCV13 vaccination was estimated by the total vaccine doses administered each year divided by the number of newborn in the year, as of the administrated dose number per 100 people. Results: From March 2017 to December 2020, the total batch release of PCV13 was 20.06 million, with a total of 71.54, 384.75, 475.45, and 10.8886 million doses each year. During the same period, PCV13 reported doses were 20.2369 million and the vaccination doses from 2017 to 2021 were 4.08, 170.46, 407.52, 599.77, and 8.4185 million doses, respectively. From 2017 to 2021, the ratio of PCV13 doses administrated per 100 infants in each year was 0.25, 10.26, 23.81, 38.16, and 69.90 doses per 100 people, respectively. The range of the ratio in each province increased from 3.85 doses in 2017 to 264.41 doses per 100 people in 2021. The spatial auto-correlation analysis results showed that based on prefecture-level cities, there was spatial clustering in a certain area of PCV13 coverage from 2017 to 2021, and the spatial correlation in 2021 was the highest. The hotspot analysis showed that the hotspot areas with high coverage levels of PCV13 were concentrated in Jiangsu, Zhejiang, Shanghai, Fujian and their surrounding areas. The cold spots with low vaccine coverage were concentrated in Yunnan, Qinghai, Tibet, and their surrounding areas. Conclusion: The average coverage level of PCV13 is low in China with significant regional differences.
Infant ; Infant, Newborn ; Humans ; Vaccination Coverage ; Vaccines, Conjugate ; China ; Pneumococcal Vaccines ; Vaccination ; Tibet

To analyze the epidemiological characteristics of pulmonary tuberculosis (PTB) in Motuo County from 2012 to 2021 and provide evidence for the prevention and control of PTB. A total of 223 cases of PTB were reported from 2012 to 2021 in Motuo County, with an average annual reported incidence rate of 171.39/100 000. Joinpoint regression model analysis showed that the average decline rate was 9.2% (P<0.001) from 2012 to 2021. Among the various types of PTB patients reported from 2012 to 2021, there were 69 cases of etiologic-positive cases which increased from 28.57% to 52.63%. Results from the circular distribution methods showed that there was no obvious peak time of PTB in Motuo County. There was no statistical difference in the average annual incidence of PTB between different genders (χ²=0.108, P=0.743). Among all age groups, the 20-29 years group had the highest proportion (26.91%, 60/223). The Monpa ethnic group (153 cases, 68.61%) had the largest number of cases, followed by the Lhoba people (44 cases, 19.73%) and the Tibetan (22 cases, 9.87%). Farmers (168 cases, 75.34%) had the highest occupational composition ratio, followed by students (40 cases, 17.94%). The main detection methods of PTB were clinical consultation and transferring consultation. Overall, the incidence rate of PTB decreased from 2012 to 2021. The majority of PTB patients were young adults with high transmission risk. It is necessary to pay more attention to the key populations and strengthen the comprehensive prevention and control for reducing the risk of PTB.
Young Adult ; Humans ; Male ; Female ; Adult ; Tibet/epidemiology* ; Tuberculosis, Pulmonary/prevention & control* ; Incidence ; Students ; Ethnicity ; China/epidemiology*

Objective: To explore the vaccination coverage of the 13-valent pneumococcal conjugate vaccine (PCV13) in China from 2017 to 2021. Methods: Using the reported number of PCV13 administrated doses from 2017 to 2021 and the population data from 31 provinces in China, which were collected by the Immunization Program Information System and summarized data at different levels (prefecture, provincial, and national). Collecting batch release data of PCV13 during the same period through the official website of the National Institutes for Food and Drug Control. The average coverage level of PCV13 was calculated by comparing the number of PCV13 vaccinations reported annually to the number of births in that year, and the spatial auto-correlation analysis was conducted in 2021 at the prefecture level. The coverage of PCV13 vaccination was estimated by the total vaccine doses administered each year divided by the number of newborn in the year, as of the administrated dose number per 100 people. Results: From March 2017 to December 2020, the total batch release of PCV13 was 20.06 million, with a total of 71.54, 384.75, 475.45, and 10.8886 million doses each year. During the same period, PCV13 reported doses were 20.2369 million and the vaccination doses from 2017 to 2021 were 4.08, 170.46, 407.52, 599.77, and 8.4185 million doses, respectively. From 2017 to 2021, the ratio of PCV13 doses administrated per 100 infants in each year was 0.25, 10.26, 23.81, 38.16, and 69.90 doses per 100 people, respectively. The range of the ratio in each province increased from 3.85 doses in 2017 to 264.41 doses per 100 people in 2021. The spatial auto-correlation analysis results showed that based on prefecture-level cities, there was spatial clustering in a certain area of PCV13 coverage from 2017 to 2021, and the spatial correlation in 2021 was the highest. The hotspot analysis showed that the hotspot areas with high coverage levels of PCV13 were concentrated in Jiangsu, Zhejiang, Shanghai, Fujian and their surrounding areas. The cold spots with low vaccine coverage were concentrated in Yunnan, Qinghai, Tibet, and their surrounding areas. Conclusion: The average coverage level of PCV13 is low in China with significant regional differences.
Infant ; Infant, Newborn ; Humans ; Vaccination Coverage ; Vaccines, Conjugate ; China ; Pneumococcal Vaccines ; Vaccination ; Tibet

OBJECTIVE: To investigate the risk factors of different types of Henoch-Schönlein purpura (HSP) in Tibetan patients at high altitude, as to provide reference for correctly identifying high-risk patients. METHODS: A retrospective study was used to analyze the 304 HSP patients admitted to Tibet Autonomous Region People's Hospital from April 2014 to March 2022. The gender, age, allergic history, family history, clinical type, laboratory indexes (hemoglobin, platelet count, eosinophil, C-reactive protein (CRP), albumin, immunoglobulin G, immunoglobulin A, complement C3 and C4) were analyzed retrospectively. Univariate and multivariate Logistic regression analysis to screen for risk factors affecting different types of HSP. RESULTS: Renal HSP patients showed higher IgA [(9.2±1.7) g/L vs. (6.4±2.4) g/L, P=0.015], lower complement C3 [(203.3±21.6) mg/dL vs. (301.1±19.5) mg/dL, P=0.043], and complement C4 [(33.5±2.3) mg/dL vs. (53.0±7.2) mg/dL, P=0.032]. The patients with abdominal HSP showed lower levels of hemoglobin [(119.6±19.6) g/L vs. (146.6±47.3) g/L, P=0.038] and plasma albumin [24.8 (22.1, 33.9) g/L vs. 32.6 (24.6, 35.1) g/L, P=0.045]. The patients with articular HSP exhibited higher CRP [13.5 (0.2, 20.6) g/L vs. 7.5 (0.1, 15.2) g/L, P=0.036] and erythrocyte sedimentation rate (ESR) [24 (5, 40) mm/h vs. 15 (4, 30) mm/h, P=0.049]. Elevated IgA and decreased complement C4 were risk factors for renal HSP, anemia and decreased plasma albumin were risk factors for abdominal HSP, and elevated CRP was a risk factor for articular HSP. CONCLUSION The clinical characteristics of different types of HSP in plateau areas were different. Patients with high IgA, low complement C4, anemia, hypoalbuminemia, and significantly elevated CRP should be highly vigilant. Early and effective intervention can improve the clinical efficacy, avoid severe development, and improve the prognosis.
Humans ; Retrospective Studies ; Tibet/epidemiology* ; Complement C3/analysis* ; IgA Vasculitis/complications* ; Altitude ; Complement C4 ; C-Reactive Protein/analysis* ; Immunoglobulin A ; Risk Factors ; Anemia ; Hemoglobins/analysis* ; Serum Albumin/analysis*

Objective To analyze the clinicopathological features and immunohistochemical expression of meningiomas in the Tibetan population in Tibet,and improve the understanding of meningiomas. Methods The clinical and pathological data of all the meningiomas diagnosed by pathology in Tibet Autonomous Region People's Hospital from April 2013 to March 2021 were analyzed retrospectively.All the cases underwent immunohistochemical staining of trimethylation of lysine 27 on histone H3 (H3K27me3),mucin 4 (MUC4),somatostatin receptor 2 (SSTR2),progesterone receptor,epithelial membrane antigen,glial fibrillary acidic protein,vimentin,S-100,P53,and Ki-67.The histopathological features and the staining results were observed under a light microscope. Results A total of 116 cases of meningiomas were included in this study,with the male-to-female ratio of 1.0∶2.6 and the age of 4-73 years.The main clinical symptom was headache.The imaging examination showed that 114 cases had single lesions and 2 cases had multiple lesions.The tumors were located in the cranium (108 cases) and spinal canal (8 cases).The maximum diameter of the tumors ranged from 0.3 cm to 10.0 cm,with a mean of (5.7±2.2) cm.In terms of microscopic grading and histological types,the 116 cases included 111 cases of WHO grade Ⅰ (including 53 cases of fibrous type,20 cases of meningothelial type,24 cases of transitional type,10 cases of psammomatous type,etc.),4 cases of WHO grade Ⅱ (3 cases of atypical type and 1 case of clear cell type),and 1 case of WHO grade Ⅲ (papillary type).The immunohistochemical staining showed H3K27me3 expression absent in 9 cases (9/116,7.8%),MUC4 positive in 64 cases (64/116,55.2%),SSTR2 positive in 101 cases (101/116,87.1%).Eighty cases had follow-up results,among which 71 cases had no recurrence,while 9 cases recurred. Conclusions Meningioma is the most common tumor in the central nervous system in the pathological file of Tibet.It mainly attacks the middle-aged female patients,occupying the parasagittal sinus,falx,and convex surface of the brain.Fibrous meningioma of WHO grade Ⅰ is common,while the meningiomas of WHO grades Ⅱ and Ⅲ are rare.The expression degree of MUC4 is higher in meningothelial and transitional meningiomas but lower in fibrous meningiomas.There may be no correlation between the absence of H3K27me3 expression and prognosis.
Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; Female ; Histones ; Humans ; Male ; Meningeal Neoplasms/diagnosis* ; Meningioma/diagnosis* ; Middle Aged ; Retrospective Studies ; Tibet ; Young Adult

Gansu province is located at the intersection of the three plateaus(Qinghai-Tibet Plateau, Inner Mongolia Plateau, and Loess Plateau) and the three river basins(Yellow River Basin, Yangtze River Basin, and inland river basin). The complex eco-environment and climate conditions here have created rich and diverse vegetation. Therefore, it is of great significance to study the spatial distribution characteristics of rare and endangered medicinal plant resources in Gansu province for formulating reasonable protection po-licies and promoting the development of medicinal plant industry. The data of rare and endangered medicinal plant resources in 87 counties of Gansu province were collected from results of the fourth general survey. The spatial distribution and the high-or low-value gathering area of rare and endangered medicinal plant resources in Gansu province were analyzed by geostatistical methods such as exploratory spatial data analysis, trend surface analysis, and Anselin Local Moran's I. The eco-environment characteristics of the high-or low-value gathering area were analyzed with the data of vegetation type, soil texture classification, annual mean temperature, annual mean precipitation, and elevation. Furthermore, the relationships of the spatial distribution and diversity with the geographical environment of rare and endangered medicinal plants in Gansu province were analyzed to provide support for the restoration and protection policy making of these plant resources.
China ; Plants, Medicinal ; Rivers ; Soil ; Tibet