Objective: To investigate the incidence and independent risk factors of adverse events (AEs) associated with therapeutic plasma exchange (TPE) in patients undergoing allogeneic hematopoietic stem cell transplantation (allo-HSCT), and to provide evidence to support the safe use of TPE in clinical practice. Methods: This retrospective study included 167 allo-HSCT recipients who underwent a total of 385 TPE procedures between March 2022 and December 2023. Patients were divided into two groups according to the occurrence of TPE-related AEs. Baseline characteristics, plasma exchange parameters, and clinical features were collected. Univariate analysis and multivariable Firth logistic regression were performed to identify independent risk factors for AEs. Results: A total of 385 TPE procedures were performed in 167 allo-HSCT patients, and 33 patients (19.8%) experienced TPE-related AEs. Among the 33 patients who experienced AEs, allergic reactions were the most common (n=18, 54.5%), followed by blood pressure fluctuations (n=11, 33.3%) and hypocalcemia (n=4, 12.1%). Most AEs were classified as grade II (n=23, 69.7%), and no grade IV (fatal) events were observed. Univariate analysis demonstrated a significant difference in the incidence of AEs among different hematocrit (HCT) categories (<20%, 20%-30%, and>30%) (Fisher's exact test, P=0.022). Although the overall difference was statistically significant, none of the pairwise comparisons remained significant after Bonferroni correction (adjusted P>0.0167). Multivariable Firth logistic regression identified higher HCT levels, analyzed as a continuous variable (OR=1.07, 95% CI: 1.01-1.13, P=0.020), and TPE performed for cytokine release syndrome (CRS) (OR=9.21, 95% CI: 1.25-78.00, P=0.030) as potential independent risk factors for TPE-related AEs. Receiver operating characteristic (ROC) curve analysis showed that HCT had an AUC of 0.67 (95% CI: 0.57-0.77) for predicting AEs, with an optimal cutoff value of 24.5%, a sensitivity of 60.6%, and a specificity of 75.4%. Using this cutoff, the AEs rate was significantly higher in patients with HCT≥24.5% than in those with HCT<24.5% (37.7% vs 11.4%, P<0.001). Conclusion: A-mong allo-HSCT patients receiving TPE, allergic reactions were the predominant AEs. Higher HCT levels and TPE performed for CRS may be associated with an increased risk of AEs. HCT≥24.5% may help identify patients requiring intensified monitoring, although its discriminatory ability is moderate (AUC=0.67) and it should not be used as a standalone criterion for clinical decision-making. Findings regarding the CRS subgroup require validation in larger cohorts. Optimizing extracorporeal circuit priming and strengthening peri-procedural monitoring may help improve the safety of TPE.

Objective: To analyze the epidemiological characteristics and spatio-temporal clustering characteristics of pulmonary tuberculosis (PTB) in Yulin City, Shaanxi Province from 2007 to 2024, so as to provide the evidence for optimizing regional PTB prevention and control strategies. Methods: Registration data of PTB cases in Yulin City from 2007 to 2024 were collected from the Tuberculosis Management Information System of the China Disease Prevention and Control Information System. The average annual percent change (AAPC) and annual percent change (APC) were used to analyze the trends in PTB registration rates. Descriptive epidemiological methods were used to analyze the temporal, spatial and population distribution characteristics. Spatio-temporal scan analysis was used to analyze the spatio-temporal clustering characteristics. Results: A total of 35 874 PTB cases were registered in Yulin City from 2007 to 2024. The registered incidence decreased from 80.41/105 in 2007 to 38.53/105 in 2024 (AAPC=-3.916%, P<0.05). Downward trends were observed from 2007 to 2016 and from 2019 to 2022 (APC=-4.440%, -19.361%, both P<0.05). March used to be the peak of disease incidence, with a seasonal index of 1.78, while February used to be the trough, with a seasonal index of -1.38. The average annual registered incidence rates were relatively high in Zhouxian County, Wubu County, and Suide County, at 89.02/105, 82.52/105 and 79.61/105, respectively. There were 21 672 registered PTB cases among males, accounting for 60.41%, and 14 202 cases among females, accounting for 39.59%. The higher registered cases were observed in groups aged 15 to <25 years and ≥65 years, with 9 400 and 7 950 cases, accounting for 26.20% and 22.16%, respectively. The proportion of population aged ≥65 years increased from 16.97% in 2007 to 43.24% in 2024, with an increase of 154.80%. Farmers were the predominant occupation, with 24 477 cases, accounting for 68.23%. Spatio-temporal scan analysis showed that the primary clusters consistently included Qingjian County, Suide County, Zizhou County, and Wubu County from 2007 to 2015, 2016 to 2019, 2020 to 2022 and 2023 to 2024. Mizhi County was incorporated into the clusters from 2016 to 2019 and 2020 to 2022, while Jiaxian County was further added from 2023 to 2024. The specific cluster periods were from January 2007 to June 2011, November 2017 to August 2019, March 2020 to July 2021, and February 2023 to July 2024, respectively. Conclusions From 2007 to 2024, the registered incidence of PTB in Yulin City showed an overall declining trend. March marked the peak of disease onset. Males, the elderly aged ≥65 years and farmers were the high-incidence population. Persistent spatio-temporal clustering was observed in the southern regions, including Qingjian County, Suide County, Zizhou County, Wubu County, and Mizhi County.

ObjectiveTo evaluate the effect of women's body mass index （BMI） on pregnancy outcomes of ovulation induction intrauterine insemination （OI-IUI） in patients with unexplained primary infertility. MethodsThe study included 764 OI-IUI cycles from January 2016 to December 2022 in reproductive center of Sun Yat-sen Memorial Hospital. According to BMI，patients were divided into three groups：low BMI （BMI<18.5 kg/m²）， normal BMI （18.5 kg/m² ≤BMI＜23.0 kg/m²）， and high BMI （BMI≥23.0 kg/m²）. Comparison of clinical data and pregnancy outcomes was performed between the groups. Logistic regression was used to analyze the association between BMI and live birth rate. ResultsFrom the low BMI group to the high BMI group， the HCG positive rate （7.08%，9.74%， 13.19%）， clinical pregnancy rate（5.51%， 7.91%， 13.19%）， and live birth rate （4.72%， 6.90%， 12.50%） increased. Among them， the live birth rate of the high BMI group was significantly higher than that of the low BMI group and the normal BMI group， with a statistically significant difference （P=0.034）. While the early miscarriage rate （14.28%， 10.26%， 5.26%） decreased from the low BMI group to the high BMI group. The binary logistic regression analysis revealed that BMI was an independent factor in live birth， and high BMI resulted in a better live birth rate than low BMI （OR=3.15，95%CI=1.191-8.329，P=0.021）. ConclusionLow BMI is associated with poor OI-IUI outcomes in patients with unexplained primary infertility. These patients are encouraged to gain weight in a healthy manner.

Objective To optimize the synthesis method of ¹⁸F-T807 and study preliminary biodistribution. Methods ¹⁸F-T807 was synthesized using an optimized method in TRACERlab FX_FN synthesizer with a t-BOC（t-Butyloxy carbonyl）-protected ¹⁸F-T807 precursor NPPI-9 as starting material, improving experimental conditions for synthesis, then QC and biodistribution study in Wistar rats conducted. Results The improved synthesis conditions increased the synthesis yield from 20.5%±6.1% to 25.7%±5.8%. QC met the standard. Wistar rats had higher intake in kidney, liver, blood and lowest intake in brain, heart, lung. Conclusion The optimized synthesis method to synthesize ¹⁸F-T807 is simple and easy, and high yield, which can meet the needs of scientific research and clinical practice.

Objective To analyze the metabolic differences of ¹¹C-flumazenil (¹¹C-FMZ) with different specific radioactivity by detecting the percentage proportion of the main metabolites in vivo. Methods 5 male and 5 female volunteers with average age of (41.7±4.7) years and weight of (69.3±6.8) kg were selected from May to October 2019. ¹¹C-FMZ with high and low specific radioactivity (268.3±57.2)×10³ and (57.8±11.4)×10³ Ci/mol was injected successively. The percentage of injected dose/liter of ¹¹C-FMZ and its metabolites in the plasma at 1, 2, 3, 4, 5, 10, 15, 20, 30, 40 and 60 min after the injection was measured. Paired sample mean t test was used to calculate and compare the percentage of metabolites in the two groups. Results The percentage proportion of metabolites increased gradually with time, and reached the stable level after 15 min. The percentage proportion of low specific radioactivity group was higher than that of high specific radioactivity group with a significant statistical difference between 15 min and 60 min (P<0.05). Conclusion The metabolic rate of ¹¹C-FMZ with different specific radioactivity was significantly different after injection and the specific radioactivity difference should be avoided if possible in clinical application.

Objective:To investigate the clinical diagnosis and treatment of primary abdominal pregnancy after in vitro fertilization and embryo transfer (IVF-ET). Methods:This paper reports 3 cases of primary abdominal pregnancy after IVF-ET in Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, and discusses the diagnosis and treatment.Results:All 3 cases of abdominal pregnancy were diagnosed by transvaginal B-ultrasound before operation. Laparoscopic resection of the abdominal cavity pregnancy gas was performed, and the level of postoperative human chorionic hormone (hCG) decreased.Conclusion:Primary abdominal pregnancy after IVF-ET is a rare ectopic pregnancy. Close monitoring of hCG level and B-ultrasound are helpful for early diagnosis. Laparoscopic exploration and abdominal pregnancy resection are effective treatments. Early diagnosis and treatment of abdominal pregnancy can improve the prognosis.

Objective:To investigate the clinical diagnosis and treatment of primary abdominal pregnancy after in vitro fertilization and embryo transfer (IVF-ET). Methods:This paper reports 3 cases of primary abdominal pregnancy after IVF-ET in Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, and discusses the diagnosis and treatment.Results:All 3 cases of abdominal pregnancy were diagnosed by transvaginal B-ultrasound before operation. Laparoscopic resection of the abdominal cavity pregnancy gas was performed, and the level of postoperative human chorionic hormone (hCG) decreased.Conclusion:Primary abdominal pregnancy after IVF-ET is a rare ectopic pregnancy. Close monitoring of hCG level and B-ultrasound are helpful for early diagnosis. Laparoscopic exploration and abdominal pregnancy resection are effective treatments. Early diagnosis and treatment of abdominal pregnancy can improve the prognosis.

Objective:To figure out the development status of group psychotherapy and its problems and trends in China.Methods:Properties and contents,intervention programs and methods of 386 chosen articles from key journals of psychology and Doctor & Master Thesis in the group psychotherapy area were examined with bibliometric analyses and content analysis.Result:It showed a fast increase in properties and contents for the last 15 years.The proportion of clinical and sub-clinical study was 1 ∶ 4.Totally 53.9％ of studies focused on anxiety and depression,89.4％ were quantitative studies and 86.9％ were effect studies.As for the intervention programs,36.5％ were CBT,90.0％ were short-term treatment group below 12 times,35.6％ were lack of details in introductions and 67.8％ had other missing descriptions of group leader.As for the methods,34.9％ of participants were undergraduates,experimental (34.9％) and comprehensive (44.6％) methods were dominant,and difference test (58.3％) was most widely used statistical analysis.The self-report effect evaluation accounted for about 91.4％,and the follow-up studies were less than 22％.Totally 42.9％ of studies were lack of ethical consideration.Conclusion:The status of group psychotherapy in China is still in its early developmental phase,which need further standardization and improvement.

Objective To identify the genotype of the APP/tau/PS1 triple transgenic Alzheimer's disease (AD) mice,and investigate the pathological changes of tau protein in the pathogenic process.Methods Using specific primers of PS1,APP,tau gene,the genotypes of the triple transgenic AD mice were identified.Expression of tau protein in hippocampal tissue of mouse model aged 2,4,8 month was detected by immunohistochemistry.The expression of tau and its hyperphosphorylation in different sites in the hippocampal tissue and different month old mice was detected by Western blotting.Results PCR amplification fragment of 960 bp,530 bp and 400 bp of transgenic mouse genome were the expected size of APP,PS1,tau,respectively.Expression of tau in hippocampal CA3 region was increased obviously in the 8 month old mice.Compared with the normal wild-type mice,the expressions of tau and phosphorylation of pS262,pS404 and pS202 were increased significantly in hippocampus tissue of the transgenic mice (P＜0.01).Expression of tau were significantly higher in 8-and 12-monthsold mice than in 2 months-old mice (P ＜ 0.01).Phosphorylation level of pS404 and Ps202 was significantly increased since 2-months-old in transgenic mouse compared to the wild type mouse (P＜0.01),and in 8-monthold mice,there was also a significant increase as compared to that in 2 month-old mice (P＜0.01).As to the phosphorylation level of pSs262,the significant increase did not appear until 12 months old in transgenic mouse as compared to the wild type mouse (P＜0.01).Conclusions The triple transgenic mice can stably express the APP/tau/PS1 gene.The transgenic animals can be a useful model with the pathological features of tau of AD.The phosphorylation level of tau in different site increases in different time,which will provide useful research reference in Alzheimer's disease pathology and medication research.

Objective To evaluate the effect of the difficult embryo transfer on the clinical pregnancy outcome of in vitro fertili-zation-embryo transfer(IVF-ET) .Methods There were 209 fresh cycles of difficultly transferring and 2 489 fresh cycles of easily embryo transferring between January 2011 and December 2012 .The clinical outcome was compared .Results There were statistical-ly significant differences in the catheter blood staining rates (51 .20% vs 27 .68% ,P< 0 .05) ,implantation rate(31 .14% vs 35 . 54% ,P<0 .05) ,and clinical pregnancy rate (46 .41% vs 55 .56% ,P<0 .05)between the two groups .There was no significant difference in the rates of ectopic pregnancy and miscarriage between the two groups (P>0 .05) .Conclusion Difficulty ET will in-fluence the clinical pregnancy .Therefore ,all efforts should be made to avoid the difficult transfer in order to increase the pregnant rate .