[Objective] To investigate the correlation between human leukocyte antigen (HLA) gene polymorphism and hepatitis B virus (HBV) infection. [Methods] Venous blood samples were collected from 501 healthy individuals undergoing physical examinations at Yan’an Hospital in Kunming, Yunnan Province. Enzyme linked immunosorbent assay (ELISA) was used to detect HBV halves. Based on the results of HBV half detection, the patients were divided into three groups: HBV carrier group, previous infection group, and healthy control group. The HLA-A antigen genotype was detected using polymerase chain reaction with sequence specific primers (PCR-SSP) genotyping technology, and the distribution frequency of HLA-A gene polymorphism was compared between HBV carrier group and healthy control group, as well as between previous infection group and healthy control group. SPSS17.0 software was used for data statistical analysis. [Results] In the healthy control group, the HLA-A2 positivity rate was 47.49%, and the allele frequency was 31.29%.The overall frequency of gene distribution in the healthy control group was consistent with the HLA-A allele table commonly and confirmed in China published by the Chinese Bone Marrow Bank. The HLA-A2 positivity rate and allele frequency in the HBV carrier group were 63.04% and 42.23%, respectively; The difference in HLA-A2 positivity rate and allele frequency among carriers was statistically significant (P<0.05). the HLA-A2 positivity rate and allele frequency in the HBV previous infection group were 56.14% and 35.97%, respectively, which did not significantly differ from those in the healthy control group (P>0.05). [Conclusion] HLA-A2 gene may be a susceptibility gene for chronic hepatitis B HBV carriers.

Objective:To investigate the effect of visceral fat thickness before operation on the operative difficulty and postoperative complications in renal transplantation recipients.Methods:A total of 179 patients diagnosed with end-stage renal disease who underwent kidney transplantation in Beijing Friendship Hospital, Capital Medical University from January 2020 to January 2022 were retrospectively included. According to the visceral fat thickness measured by CT before transplantation (distance from anterior wall of abdominal aorta to parietal peritoneum at 1 cm above umbilicus), patients were divided into two groups, with 103 patients in thin visceral fat group with visceral fat thickness ≤7.5 cm and 76 patients in thick visceral fat group with visceral fat thickness>7.5 cm. The epidemiological data before renal transplantation, operative time, intraoperative blood loss, postoperative complications, renal function after transplantation and patients′ recovery state were analyzed and compared between the two groups. Measurement data were expressed as mean±standard deviation ( ± s), and independent sample t-test was used for comparison between groups. The Chi-square test was used to compare the count data. Results:The mean age and body mass index of patients in thin visceral fat group [(38.70±11.50) years and (21.28±2.93) kg/m 2] were lower than those in thick visceral fat group [(43.14±11.42) years and (24.78±3.37) kg/m 2], and the differences were statistically significant ( P< 0.05). There was no significant difference in other preoperative epidemiological data between the two groups ( P>0.05). In terms of operation difficulty, the mean operation time of thin visceral fat group was (117.16±34.33) min, which was significantly shorter than that of thick visceral fat group (137.11±20.02) min. The mean intraoperative blood loss in the thin visceral fat group was (89.12±45.95) mL, which was lower than that in the thick visceral fat group (125.39±54.88) mL, the differences were statistically significant ( P<0.001). In terms of postoperative complications, 41 patients in the thin visceral fat group had postoperative infection, incision pain and intraoperative effusion, and the incidence was 39.8% (41/103), which was significantly lower than that in the thick visceral fat group (78.9%, 60/76), the difference was statistically significant ( P<0.001); However, there was no significant difference in the incidence of Clavien-Dindo grade 3 or higher complications between the two groups ( P> 0.05). There was no significant difference in serum creatinine levels at 3, 5, 7 days and 1, 2 months after surgery among patients with different visceral fat thickness ( P> 0.05). However, the mean serum creatinine level in the thin visceral fat group was (116.06±36.45) μmol/L, which was lower than that in the thick visceral fat group (133.35±72.26) μmol/L, and the difference was statistically significant ( P=0.038). There was no significant difference in the incidence of delayed renal function recovery between the two groups ( P> 0.05). At the same time, there was no significant difference in postoperative drainage tube indwelling time and hospital stay between the two groups ( P> 0.05). Conclusions:The thicker visceral fat in end-stage renal disease patients before transplantation, the higher the incidence of general postoperative complications, but the severity of complications, patients′ recovery after transplantation and the short-term function of the transplanted kidney are not significantly related to the thickness of visceral fat in the recipients. Meanwhile, although the visceral fat thickness of the recipients in this study was correlated with serum creatinine levels at 3 months after transplantation, its correlation with long-term graft renal function and graft survival time remains to be further studied.

There is no effective treatment for castration-resistant prostate cancer that developed from primary prostate cancer. With the deepening research of human gastrointestinal microbiota, it indicated that all kinds of tumors including castration-resistant prostate cancer might be associated with the characteristic changes of gastrointestinal flora, and it might affect the progress of the tumor through multiple ways. The gastrointestinal microbiota of patients could promote the conversion of androgen precursors to active androgens; could participate in the regulation of thymus function and change the immune activity of the body; could provide raw materials such as glutamate and phosphatidylcholine for tumor growth and metabolism. It may also cause local or systemic inflammation in the digestive tract, and then may lead to the occurrence and development of prostate cancer and the formation of castration resistance. This article reviewed the relationship between gut microbiota and the development of castration-resistant prostate cancer from several molecular mechanisms, in order to provide clues for further research in the future.

Objective To investigate the correlation between amide proton transfer-weighted(APTw)value derived from APTw imaging and Ki-67 expression in hepatocellular carcinoma.Methods Sixty patients with hepatic occupations underwent preoperative upper abdominal MRI scanning,including APTw and diffusion weighted imaging(DWI)sequences.Thirty-two patients with hepatocellular carcinoma proved by pathological results were enrolled in the prospective study.The APTw and apparent diffusion coefficient(ADC)values of the lesions were measured from the corresponding APTw and ADC images,respectively.Mann-Whitney U test or independent sample t test was used to analyze the differences in APTw and ADC values between the high and low Ki-67 expression groups.Pearson correlation analysis was used to evaluate the correlation between APTw value,ADC value and Ki-67 expression level of hepatocellular carcinoma.The receiver operating characteristic(ROC)curve was used to evaluate the diagnostic efficacy of amide proton transfer(APT)parameter in differentiating high and low Ki-67 expression groups.Results The APTw values of high Ki-67 expression group(n=24)was higher than that of low Ki-67 expression group(n=8)[(1.33±0.77)％vs(0.64±0.58)％,P=0.026].There was no significant difference in ADC values between the two groups(0.82×10-3 mm2/s vs 0.86×10-3 mm2/s,P=0.679).The APTw values were positively correlated with Ki-67 expression(r=0.377,P=0.035),and the area under the curve(AUC)of APTw value＞1.24％for the diagnosis of high Ki-67 expression was 0.794,with a sensitivity of 67％and a specificity of 88％.Conclusion The APTw value of hepatocellular carcinoma is positively correlated with Ki-67 expression,which has certain diagnostic value for predicting the expression status of Ki-67.

Objective:To summarize the experience and skills of ex-vivo ureteroscopy that performed on deceased donor kidneys with gifted lithiasis on bench prior to transplantation.Methods:From January 2018 to December 2019, a total of 7 death donors in Capital Medical University Beijing Friendship Hospital were found to have donor gifted lithiasis during pre-donation evaluation, and all of them underwent ureteroscope laser lithotripsy on bench before transplantation. We retrospectively analysied the demographic information of donors, stone size, location, operative complications and stone clearance rate of the total 7 donor kidneys. The mean age of donors was (49.6±6.8) years. The 7 gifted lithiasis consisted of 6 cases of simple pyelolithiasis and 1 case of upper ureteral calculi.Results:The mean diameter of the stones was (1.2±0.5)cm (0.4~2.1 cm). The 5 cases of pyelolithiasis and 1 case of ureteral calculi were examined with semi-rigid ureteroscopy and then underwent holmium laser lithotripsy. The other 1 case had not found the stone during the bench operation. The mean lithotripsy time was (23.0±6.1)min, and all donor kidneys underwent hypothermic machine perfusion after lithotripsy. The initial resistance index (RI) of donor kidney with gifted lithiasis was higher than the other side of the same donor ( P<0.05), but there was no statistical difference in end-point RI between the both sides. None of the 7 recipients had severe hematuria after operation and their renal function recovered well. CT scan at 1 month after the operation showed the clearance of stone was satisfied in all 7 recipients. Conclusions:Bench surgery is a minimally invasive method for donor gifted lithiasis management, and it is relatively safe and effective. For most cases, the semi-rigid ureteroscopy can handle it well, but the long-term effect still needs to be further evaluated.

Objective: To investigate the effect of 1q21 amplification (1q) on the therapeutic response and prognosis of bortezomib(Btz) in the treatment of newly diagnosed multiple myeloma (MM) patients. Methods: A total of 180 newly diagnosed MM were included for analyses of clinical characteristics, cytogenetics, objective response rate (ORR), progression-free survival (PFS) and overall survival (OS), retrospectively. Gene expression profiling (GEP) was analyzed using publicly available R2 platform. Results: ① In 180 patients, 1q was found in 51.1% cases. Of them, 174 patients had complete follow-up data, including 88 cases with 1q and 86 without 1q (non-1q). ②Incidence of 1q was positively associated with percentage of IGH rearrangement (72.2%, P=0.017) and 1p deletion (1p) (27.8%, P=0.040). ③ The median PFS was 15.0 and 20.3 months for the 1q group and non-1q group, and the median OS was 29.4 and 44.0 months, respectively. Both PFS and OS of 1q group was significantly shorter than those of the non-1q group (P=0.029 and 0.038, respectively). Multivariate analysis further revealed that 1q was an independent prognostic factor for both PFS (HR=1.910, 95% CI 1.105-3.303, P=0.020) and OS (HR=2.353, 95% CI 1.090-5.078, P=0.029). ④ In 91 evaluable cases with 1q, very good partial remission (VGPR) rate was higher after treatment with Btz than those without Btz (62.1% vs 40.0%, P=0.032). Of note, the patients with 1q who received auto-HSCT after induction with Btz had significantly longer PFS than those without auto-HSCT (19 months vs 13 months, P=0.048). ⑤GEP analysis revealed that 1q21 amplification predominantly up-regulated expression of >50% genes within 1q21 region, and also altered expression of 28% genes in chromosome 1 and 10% genes in whole genome, particularly related to DNA repair and cell cycle. Conclusions 1q is an independent adverse prognostic factor in patients with newly diagnosed MM. It is often associated with 1p deletion and IGH rearrangement. Patients with 1q respond well to Btz-based regimen, but they fail to gain long-term benefit from this treatment itself. However, auto-HSCT following Btz induction might improve survival of patients with 1q, suggesting a potential strategy to treat this high-risk subset of MM. GEP analysis warrants further attention in understanding the mechanisms underlying the high-risk of 1q.

Objective To investigate the epidemiology of spinal cord injuries (SCI) in hospital. Methods 423 patients with SCI were reviewed. esults The ratio of male to female was 15.3∶ 1, aged (40±11) years. The coal mine-related staff was the most (61.7%), mainly aused from coal blocks dropping (53.26%). 135 cases (31.91%) injured in cervical vertebra, and 187 cases (44.21%) in lumbar. There were 92 (45.39%) cases were complete injury. The most frequent complication of SCI were urinary tract infection, pressure sore and pulmonary nfection. The factors correlated with the complication were the degree of ASIA Impairment Scale, the period of admitted to hospital after injury, nd the surgery (P<0.05). The expenditure of hospitalization was mainly provided by oneself (73%). Conclusion It is important to improve he occupation prevention, enlarge the coverage of medical insurance, and promote pre-hospital care to prevent SCI.

ObjectiveTo investigate the characteristic changes of expression of the genes related to inflammation response after injury of rubrospinal tract（RST）. Methods18 Sprague Dawley（SD）female rats were randomly divided into 2 groups: RST injury group (n=9) and Sham group (n=9). RST injury models were established, and the rats were killed 24 hours after injury. 5 mm length spinal cord was harvested from the epicenter and total RNA was extracted. Affymetrics Gene Chips for rats, representing 28000 genes, were used for mRNA expression profiling.Results153 transcripts were observed to differ (2.0 fold; 136 up-regulated and 17 down-regulated) after injury of RST, compared with sham group. Most of genes related to inflammation response were up-regulated (except Scn9α). 8 genes related to Toll-like receptor signaling pathway were also up-regulated.ConclusionSignificant changes related to inflammation response occur in acute phase after injury of RST.

Objective To assess the effectiveness of free distributing antipsychotics to the poverty schizophrenics.Methods 116 non-acute poverty schizophrenics were given free antipsychotics and their status were evaluated by Brief Psychiatric Rating Scale (BPRS) before and after administration of antipsychotics.Results The BPRS scores of schizophrenics decreased linearly with time （ P<0.05） during 4 months follow-up study.Conclusion Poverty schizophrenics acquire good therapeutic efficacy after accepting free antipsychotics, and the government should provide the poverty mental disorder patients with related policy and fund support.

Objective To construct the human IL-24 recombined adenovirus(Ad-IL24)and to observe the effect of Ad-IL24 on ex vivo culture of HL-60 cells.Methods pAdTrack-CMV-IL24 was constructed by PCR with pcDNA3.0-IL24 recombined plasmid as a template,enzyme digestion and ligation.The pAdTrack-CMV-IL24 lineared by Pme Ⅰ was co-transformed into BJ5183 with pAdEasy-1.The pAdEasy-1-pTrack-CMV-IL24 recombined adenovirus vector was lineared with Pac Ⅰ and then transfected in to QBI-293A cells.The Ad-IL24 was obtained and used to infect HL-60 ceils,and the effect on HL-60 cells was tested by LSCM,Mrrr,FCM,ELISA and immunohistochemistry staining.Results The pAdEasy-1-pTrack-CMV-IL24 vector was constructed and the Ad-IL24 was successfully obtained.The effect of inhibiting growth of HL-60 cells and inducing cell apoptosis by IL-24 was proved by LSCM,MTT and FCM.IL-24 down-regulated the expression of anti-apoptosis factor Bcl-2 and increased the secretion of IFN-γ,TNF-α of HL-60 cells.Conclusion Ad-IL24 can inhibit the growth of HL-60 cells and induce cell apoptosis through down-regulating expression of anti-apoptosis factor and increasing the secretion of IFN-γ,TNF-α of HL-60 cells.The human Ad-IL24 may provide a basic study for the future target therapy to tumors.