ObjectiveTo study the expression changes of peripheral blood monocyte human leukocyte antigen DR (HLA-DR) in patients with severe craniocerebral injury,and investigate the correlation between HLA-DR expression and infection and prognosis.MethodsNinety patients with craniocerebral injury were selected as experimental group and were divided according to the Glasgow coma scale (GCS) score after hospitalization into experimental group 1 (GCS score 13-15 scores ),experimental group 2 (GCS score 9-12 scores) and experimental group 3 (GCS score 3-8 scores) with 30 patients each,which were moderate,medium,severe craniocerebral injury,respectively.Thirty healthy people were chosen at the same period as control group.The HLA-DR expression of experimental group was detected after 1,3,7 and 14 d of admission by flow cytometry,and the HLA-DR expression of control group was detected on the day they got physical examination.The rates of infection,cure,disability,vegetative state and mortality were counted after 30 d of admission.ResultsThe HLA-DR expressions in experimental group 1 and experimental group 2 after 1,3,7,14 d of admission were (28.11 ± 2.37),(26.45 ± 1.63),(27.75 ± 1.83),(27.15 ± 2.17) MCF and (29.34 ±2.07),(27.55 ± 1.63),(28.42 ± 1.94),(29.46 ±2.12) MCF,which had no statistical difference compared with that in control group [(29.18 ± 1.91 ) MCF](P＞ 0.05).The HLA-DR expressions in experimental group 1 and experimental group 2 after 1,3,7 d of admission and control group had statistical differences compared with those in experimental group 3 after 1,3,7 d of admission [(18.02 ± 1.78),(16.05 ± 1.97 ),(20.76 ± 1.65) MCF ] (P ＜ 0.05).The HLA-DR expressions in experimental group 1 and experimental group 2 after 14 d of admission and control group had no statistical significance compared with that in experimental group 3 after 14 d of admission [ (26.13 ± 2.15) MCF](P＞ 0.05).The infection rates of experimental group 1,experimental group 2 and experimental group 3 were 0,3.6％(1/28),82.8％(24/29),respectively,while the cure rates were 100.0％ (30/30),100.0％ (28/28),10.3％ (3/29),the disability rates were 0,0,41.4％ (12/29),the vegetative state rates were 0,0,20.7％ (6/29),and the mortality were 0,0,27.6％ (8/29).There was no statistical significance in the rates of infection,cure,disability,vegetative state and mortality between experimental group 1 and experimental group 2 (P＞ 0.05 ).While there was statistical differences in the rates of infection,cure,disability,vegetative state and mortality among experimental group 1,experimental group 2 and experimental group 3 (P ＜ 0.05).ConclusionsThe HLA-DR expression changes of patients with moderate and medium craniocerebral injury after 1,3,7,14 d of admission are not significant.The HLA-DR expression of patients with severe craniocerebral injury begins to decline from 1 d after injury,declines obviously at 3 d,increases from 7 d,returns to normal level at 14 d.The decline of HLA-DR expression in patients with severe craniocerebral injury is correlated with the infection,and predicts poor prognosis.

Objective To measure the macular thickness of natural population in Changping district of Beijing by optical coherence tomography (OCT), and to analyze whether there is an increased thickness in diabetic patients.Methods In a cross-sectional population-based study, OCT was performed on 521 subjects (233 with normal glucose homeostasis, 174 with pre-diabetes and 114 with type 2 diabetes (T2D) according to 2011 Health Examination Survey of Changping.The subjects also received physical examination and laboratory measurements including fasting plasma glucose (FPG), oral glucose tolerance test (OGTT)-2 h plasma glucose and hemoglobin A1c (HbA1c).Results The results showed that central subfield thickness (CST) of the retina of men ((246±22) μm) was significantly greater than that of women ((235±26) μm) (P＜0.001).Meanwhile, no significant difference was found in the CST in subjects of different age, HbAlc and body mass index (BMI) (P＞0.05).Difference in thickness of different glucose groups was not seen in central subfield, inner subfields and outer subfields(P＞0.05).Conclusions Retina CST of men was significantly greater than that of women.No significant difference was found in the CST in subjects of different age, HbA1c and BMI.

OBJECTIVE: To study the genetic polymorphisms of 7 Y chromosome single nucleotide polymorphisms (Y-SNPs) among unrelated Mongolian males from Inner Mongolia Region. METHODS: Seven Y-SNPs with expected allelic frequencies close to 0.50:0.50 in Mongolian population were selected from databases including HapMap and relevant literature. The Y-SNPs were then analyzed among 95 unrelated male Mongolian DNA samples with ligase detection reaction (LDR) technique. Statistical analysis was carried out with Arlequin 3.5. RESULTS: All of the 7 Y-SNPs had 2 alleles. Seven haplotypes were identified among the 95 samples, with the haplotype diversity (HD) being 0.7990. Except for rs17316007, whose allelic frequencies was 0.832:0.168, each of the remaining Y-SNPs had a allelic frequency close to 0.50:0.50. The gene diversity (GD) for rs17316007 was 0.2825, while those of the remaining Y-SNPs were all greater than 0.4375. CONCLUSION Except for rs17316007, the other 6 Y-SNPs showed good diversity and genetic polymorphism, and may be used for individual identification and paternity testing for the Inner Mongolia region.
Asian Continental Ancestry Group ; China ; Chromosomes, Human, Y ; genetics ; Gene Frequency ; Genetics, Population ; Haplotypes ; Humans ; Male ; Polymorphism, Single Nucleotide

Objective To investigate the association between diabetic retinopathy ( DR) and atherosclerosis cardiovascular disease ( ASCVD) .Methods Clinical data of 654 patients with type 2 diabetic mellitus (T2DM) were collected from a cross sectional , population based survey on chronic diseases and risk factors which was conducted in Beijing Changping district from July 2010 to March 2011.Among 654 T2DM patients, there were 73 patients with ASCVD (ASCVD group) and 581 patients without ASCVD ( non-ASCVD group ) .The association between DR and ASCVD was analyzed .Results Patients with ASCVD had significantly older age [58.5(53.9,65.9) years], more female sex[52(71.2%)], higher proportion of ASCVD history [45(61.6%)], higher levels of PG 2 h[16.26(11.08,19.20) mmol/L], HbA1c[7.20(6.55,8.85)%], systolic pressure [151(133,165) mmHg(1 mmHg＝0.133 kPa)] and lower eGFR[87.2(75.0,103.0) ml· min-1· 1.73 m-2] than non-ASCVD patients[52.4(46.5,58.3) years, Z＝-5.86, P＝0.00; 307(52.8%),χ2＝-8.86, P＝0.00; 256(44.1%),χ2＝8.07, P＝0.01; 13.10(8.99,17.93) mmol/L, Z＝-2.35, P＝0.02; 6.70(6.00, 7.90)%, Z＝-3.33, P＝0.00; 143(131,158) mmHg, χ2＝-2.28, P＝0.02; 94.6(84.8,106.3) ml· min-1· 1.73 m-2, Z＝-3.47, P＝0.00].The trend to develop DR in ASCVD group was significantly higher than that in non-ASCVD group [19.2%(14/74) vs.8.3%(48/581), χ2＝9.01, P ＝0.00] .DR was an independent statistical indicator of the presence of ASCVD [ OR ( 95%CI ): 2.64 ( 1.37 -5.06 ), P ＝0.00 ] . Furthermore, when DR was divided into NPDR and PDR according to its severity , only PDR was significantly associated with incident ASCVD [OR(95%CI): 12.05 (2.63-55.12), P＝0.00].After adjusting for traditional ASCVD risk factors , such an association still existed , with the risk of having ASCVD increasing by 718%[ OR (95% CI): 8.18 ( 1.56 -42.81 ), P ＝0.01] .DR associates strongly with ASCVD in the Chinese population with T 2DM.Conclussion With the severity of DR increasing , the risk of ASCVD also grows.After adjustment for traditional risk factors , PDR is still associated with the risk of prevalent ASCVD.

Objective:To analyze the detection strategy and basic detection situation of markers of infectious diseases transmitted by transfusion in blood testing laboratories of blood stations in China.Methods:Based on the data of practice comparison working party of Blood Stations in Mainland of China from 2017 to 2021, the data on the testing strategies and the basic detection information of the markers for the transmission of infectious diseases through transfusion in the member laboratories of the practice comparison working party of Blood Stations in Mainland of China from 2017 to 2021 were collected, and the situation of the selection for testing markers, testing strategy and the testing method and other relevant aspects were sorted out and analyzed by charts.Results:The selection of the testing markers was consistent, but HTLV testing item was added in some member laboratories. The detection strategy of using two ELISA reagents and one nucleic acid testing (NAT) reagent simultaneously was adopted in 47 member blood stations; 3) NAT method was dominated by mini pool-NAT in member laboratories. The number of members adopting mini-pools of 8 (MP8)-NAT decreased from 17 in 2017 to 14 in 2021, while the number of members adopting mini-pools of 6 (MP6)-NAT increased from 13 in 2017 to 22 in 2021; Roche NAT system accounted for the largest proportion.Conclusions:In order to ensure blood safety and avoid missing detection, the blood stations still adopt the detection strategy of using two ELISA reagents and one nucleic acid testing (NAT) reagent simultaneously; Meanwhile, in order to increase the NAT positive rate, the proportion of mini pool-NAT mainly decreased year by year despite its dominating role, while the proportion of individual donation-NAT increased year by year; NAT method is transiting from mini-pools of 8 (MP8) to mini-pools of 6 (MP6); The proportion of imported NAT system used in NAT laboratory is relatively large.

【Objective】 To evaluate the efficacy and safety of human coagulation factor Ⅷ developed by Shenzhen Weiguang Biological products Co, Ltd in the treatment of patients with hemophilia A. 【Methods】 A prospective, multi-center, open, single-group clinical study was conducted. A total of 65 subjects with hemophilia A were enrolled, and human coagulation factor Ⅷ(FⅧ) was injected according to the patients’ bleeding severity. The improvement score of bleeding symptoms and signs after the first infusion of the first bleeding event and the transfusion efficiency of FⅧ activity at 10 min and 1 hour after infusion were taken as the main efficacy indexes. The improvement scores of bleeding symptoms and signs after the first infusion and the increase of FⅧ activity at 10 min and 1 hour after infusion were the secondary efficacy indexes. 【Results】 The 65 subjects were enrolled in safety analysis set (SS) and full analysis set (FAS), and 58 of them were enrolled in protocol analysis set (PPS). Ten minutes and one hour after the first infusion, the level of factor Ⅷ activity in the subjects increased significantly, and the FⅧ activity increased by 100% or more in more than 79% of the subjects. The average infusion efficiency of FⅧ activity in all subjects was more than 100%. In 70% of the subjects, the pain was relieved rapidly and /or the bleeding symptoms were significantly improved 8 hours after each bleeding infusion, and the improvement rate of bleeding symptoms and signs reached 100% 72 hours after infusion. 【Conclusion】 After infusion of human coagulation factor Ⅷ, the activity level of factor Ⅷ in patients with hemophilia A significantly increased. The infusion efficiency can reach a optimal level, and the bleeding symptoms can be significantly improved.

Tyrosine phosphatase SHP2 is a promising drug target in cancer immunotherapy due to its bidirectional role in both tumor growth promotion and T-cell inactivation. Its allosteric inhibitor SHP099 is known to inhibit cancer cell growth both and . However, whether SHP099-mediated SHP2 inhibition retards tumor growth anti-tumor immunity remains elusive. To address this, a CT-26 colon cancer xenograft model was established in mice since this cell line is insensitive to SHP099. Consequently, SHP099 minimally affected CT-26 tumor growth in immuno-deficient nude mice, but significantly decreased the tumor burden in CT-26 tumor-bearing mice with intact immune system. SHP099 augmented anti-tumor immunity, as shown by the elevated proportion of CD8IFN- T cells and the upregulation of cytotoxic T-cell related genes including , which decreased the tumor load. In addition, tumor growth in mice with SHP2-deficient T-cells was markedly slowed down because of enhanced anti-tumor responses. Finally, the combination of SHP099 and anti-PD-1 antibody showed a higher therapeutic efficacy than either monotherapy in controlling tumor growth in two colon cancer xenograft models, indicating that these agents complement each other. Our study suggests that SHP2 inhibitor SHP099 is a promising candidate drug for cancer immunotherapy.