[Objective] To explore the optimal pressure parameters for chyle plasma filtration under low-temperature conditions, and to improve the quality of chyle plasma treatment and filtration efficiency by improving experimental methods. [Methods] The filtration efficiency and filtration time of 30 severe chyle plasma samples under conventional preparation environment pressure and under preparation environment with a controlled filtration membrane pressure difference of 0.5 bar were compared. [Results] The absorbance of severe chyle plasma samples before and after filtration under two different preparation pressures was statistically significant (P<0.05), and both achieved the expected filtration effect. Under the preparation environment of controlling the pressure difference of the filtration membrane to 0.5 bar, the filtration was faster and with better effect, which was statistically significant compared to the conventional preparation environment pressure (P<0.05). [Conclusion] By selecting the optimal pressure parameters for filtering chyle plasma under low-temperature conditions, the efficiency of chyle plasma filtration under low-temperature conditions has been improved, and the practicality and reliability of low-temperature filtration technology have been enhanced.

Objective To investigate the status quo of drug resistance and influencing factors of tuberculosis in In-ner Mongolia,and to provide reference for accurate prevention and control of drug-resistant tuberculosis.Methods Random sampling was used in this study.TB patients from Tuberculosis designated hospital in Inner Mongolia were included,according to the rules and drug-resistant strains were identified and tested according to relevant norms.Composition ratio or rate was calculated for statistical description,and Logistic regression model was used to analyze the influencing factors of drug resistance in TB patients.Results Among 1 321 patients,there were 936 males and 385 females,with an average age of(52.65±18.09)years.The rates of mono-resistant,multidrug-resistant(MDR),extensively drug-resistant(XDR)and total drug resistance were 19.00%,11.58%,11.66%and 42.24%,respectively.The highest resistance rates were observed for streptomycin(7.27%),isoniazid(4.69%),and isoniazid+streptomycin(4.47%).The drug resistance spectrum presented diversity and com-plexity.Compared to females,males had a higher proportion of drug resistance,and the difference was statistically significant(P<0.001).The proportion of patients who were sensitive to anti-tuberculosis drugs increased with age(P<0.05).Among different age groups,the proportion of drug-resistant patients was higher in the 20-40 age group,40-60 age group,and 60 and above age group compared to the 0-20 age group(P<0.05).Addi-tionally,the proportion of drug-resistant patients was higher in the 20-40 age group and 40-60 age group com-pared to the 60 and above age group(P<0.05).Moreover,the proportion of drug-resistant and multi-drug re-sistant patients was higher among patients undergoing retreatment compared to those undergoing initial treatment(P<0.001).Multivariate Logistic regression analysis showed that male gender(OR=1.48,95%CI:1.02-2.14),age 20-40 years(OR=2.64,95%CI:1.05-6.60),retreatment(OR=2.34,95%CI:1.70-3.22),and outpatient follow-up(OR=1.56,95%CI:1.05-2.33)were independent risk factors for drug-resistant tuber-culosis.Conclusion Inner Mongolia has a high prevalence of MDR and overall drug-resistant tuberculosis among patients.The drug resistance profile exhibits diversity and complexity.Risk factors that contribute to drug resist-ance include being male,aged between 20 and 40,undergoing retreatment,and receiving outpatient follow-up.Therefore,it is necessary to further improve clinical diagnosis and treatment,promote rational use of first-line anti-tuberculosis drugs,prioritize individualized treatment,enhance health education,improve the medical insurance system,and optimize patient management approaches in order to enhance patient compliance.

Objective To investigate the nutritional status and dietary structure of tuberculosis patients among dif-ferent populations, analyze the factors influencing the nutritional status of tuberculosis patients, and provide theo-retical basis for improving clinical nutrition and related issues in tuberculosis patients.Methods Tuberculosis pa-tients, non-tuberculosis patients, and healthy individuals were randomly selected for a questionnaire survey.De-scriptive analysis was conducted using SPSS 20.0 software.Statistical description was performed using rates and composition ratios, and qualitative data were described using relative numbers.Chi-square test was used to compare overall rates and composition ratios among different health conditions groups, with a significance level of α=0.05.Independent factors analysis of nutritional status body mass index (BMI) was conducted using multiple Logistic re-gression analysis for variables with statistically significant differences in the univariate analysis.Results There were differences in the nutritional status (x2 =62.184, P<0.05) and dietary diversity score (x2 =64.049, P<0.05) among tuberculosis patients, non-tuberculosis patients, and healthy individuals.Univariate analysis of nutri-tional status BMI showed statistically significant differences in gender, smoking, meat-based diet, vegetable-based diet, moderate diet diversity score, and 6 other variables for tuberculosis patients (P <0.05) , and in gender, age, ethnicity, marital status, occupation, education level, smoking, drinking white wine, drinking beer, meat-based diet, moderate diet, and 11 other variables for healthy individuals (P<0.05) .The variables with statisti-cally significant differences in the univariate analysis were included in the multiple ordinal logistic regression analy-sis model for both tuberculosis patients and healthy individuals.The results showed that the level of education, veg-etable intake, moderate food diversity score (DDS) of 4-6 were independent influencing factors of nutritional sta-tus BMI among tuberculosis patients (P<0.05);marital status was an independent influencing factor of nutritional status BMI among non-tuberculosis patients (P<0.05);while gender and occupation were independent influencing factors of nutritional status BMI among healthy individuals (P<0.05).Conclusion The dietary nutritional status of the three population groups varied.Targeted health education should be conducted, especially for tuberculosis patients, to address the issue of uneven dietary intake and promote good dietary habits among local tuberculosis pa-tients.

Objective:To evaluate the efficacy and safety of endoscopic ultrasound-guided selective varices devascularization (EUS-SVD) for the treatment of esophagogastric varices.Methods:A total of 43 cases of liver cirrhosis with esophageal and gastric varices at the First Affiliated Hospital of Anhui Medical University from February to December 2021 were included in a retrospective cohort study. The cases were divided into two treatment groups based on endoscopic treatment: EUS-SVD group ( n=22) and conventional endoscopic sclerosant injection group (conventional gastroscopy group, n=21). The doses of sclerosants and tissue glue, effective rate of esophageal varice treatment within 2 months after surgery, rebleeding rate within 3 months after surgery, and adverse reactions were compared. Results:The differences in terms of mean patient age, gender composition, etiology of liver cirrhosis, Child-Pugh classification of liver function, classification of esophageal varices, composition of endoscopic treatment indications, and mean maximum diameter of gastric varices were not statistically significant between the two groups ( P>0.05), indicating the comparability of baseline data. Perforating veins outside the gastric wall of gastric varices could be detected during the procedure in the EUS-SVD group, and disappearance of gastric varices after injection treatment could be determined, while these two indicators could not be detected in the conventional gastroscopy group. The amounts of sclerosing agents and tissue adhesives used in the EUS-SVD group were 7.54±3.10 mL and 1.30±0.57 mL, respectively, while the corresponding amounts in the conventional gastroscopy group were 7.57±3.50 mL ( t=0.026, P=0.980) and 1.38±0.67 mL ( t=-0.452, P=0.654), respectively. The effective treatment rate for esophageal varice within 2 months after surgery was 63.6% (14/22) in the EUS-SVD group and 52.4% (11/21) in the conventional gastroscopy group, but the difference was not statistically significant ( χ2=0.559, P=0.455). The rebleeding rate within 3 months after surgery was 4.5% (1/22) in the EUS-SVD group, significantly lower than the rate of 33.3% (7/21) in the conventional gastroscopy group ( P=0.021). Neither group experienced events of ectopic embolism or death. There was no statistically significant difference between the two groups in terms of postoperative pain, fever, nausea and vomiting, or rebleeding rate within 72 hours after surgery ( P>0.05). The incidence of gastric fundus ulcers was 9.1% (2/22) in the EUS-SVD group, significantly lower than the rate of 42.9% (9/21) in the conventional gastroscopy group ( χ2=6.435, P=0.011). Conclusion:EUS-SVD treatment for esophagogastric varices is safe and effective. It can clearly display the deep-seated intramural vessels of the gastric wall, measure the diameter of the blood vessels, accurately inject tissue glue, occlude the varicose veins and perforating vessels, and reduce the occurrence of postoperative ulcers and rebleeding.

Objective:To compare the accuracy of endoscopy and endoscopic ultrasonography (EUS) combined with Indian ink marking in locating injection sites for gastric varices, and to explore the influence of the features of gastric varices under endoscopy on the injection sites.Methods:Consecutive patients with gastric varices scheduled for EUS-guided glue injection therapy at the First Affiliated Hospital of Anhui Medical University from August 2021 to October 2022 were perspectively included. Firstly, gastric varices were assessed under endoscopy, where the size of the veins were estimated while the injection site was preliminarily judged during the procedure. Then EUS was used to identify perforating feeding veins and mark injection sites with Indian ink. After tissue adhesive was injected into identified varices, the change of varices after injection was observed and the marking was identified under endoscopy again. The clarity of the markinges was confirmed and the consistency between EUS-guided Indian ink mark and that under endoscopy was compared. Patients were divided into anastomosis group and non-anastomosis group based on marking consistency to investigate the effect of gastric varices features on the location of injection sites under endoscopy. Treatment efficacy and postoperative adverse events were counted.Results:Finally, 34 patients were included and all of them underwent successful marking under EUS guidance without complications. A total of 40 marker sites were clearly visible with Indian ink staining under endoscopy. The difference in distribution between the anastomotic group and non-anastomotic group marker points between EUS and endoscopy was statistically significant ( χ2=9.103, P=0.003). Vascular occlusion rate was 100.00% (40/40). There were 13 adverse events after operation, mainly fever, abdominal pain and nausea, and no serious adverse events such as allergy and ectopic embolization occurred. There was significant difference between the blood vessel diameter of the anastomotic group (10.84±4.02 mm) and that of the non-anastomotic group (8.80±1.61 mm, t=1.870, P=0.031). The percentage of raised vessels in the anastomotic group was 88.00% (22/25), higher than that in the non-anastomotic group [53.33% (8/15)], and the difference was statistically significant ( χ2=6.009, P=0.024). Conclusion:Accuracy in positioning under endoscopy is influenced by variceal diameter and bulge shape, being less precise in varices with smaller diameters and less pronounced bulges.

Objective:To investigate the effect of miRNA (miR) -193b-5p on melanogenesis and its possible mechanisms.Methods:Human primary melanocytes were isolated from discarded normal foreskin tissues of healthy males after circumcision, and cultured in vitro. miR-NC mimics (miR-NC mimic group) and miR-193b-5p mimics (miR-193b-5p mimic group) were transfected into human primary melanocytes and human MNT1 melanoma cells, separately. After transfection, real-time quantitative PCR (RT-qPCR) was performed to determine the overexpression efficiency of miR-193b-5p at 48 hours, Western blot analysis to determine the expression of melanogenesis-related proteins tyrosinase (TYR) and microphthalmia-associated transcription factor (MITF) in human primary melanocytes and human MNT1 melanoma cells at 72 hours, and the melanin content in the above cells was determined by a sodium hydroxide solubilization method at 1 week. The target gene of miR-193b-5p was predicted by using Targetscan algorithms and verified by dual-luciferase reporter assay, and RT-qPCR and Western blot analysis were performed to analyze changes in mRNA and protein expression of the target gene respectively after the overexpression of miR-193b-5p. Two-independent-samples t test was used for comparisons between two groups. Results:In human primary melanocytes and human MNT1 melanoma cells, the miR-193b-5p expression levels were significantly higher in the miR-193b-5p mimic groups than in the miR-NC mimic groups ( t = 65.57, 22.49, respectively, both P < 0.001) , and the melanin content was significantly lower in the miR-193b-5p mimic groups (0.091 ± 0.007, 0.130 ± 0.004, respectively) than in the miR-NC mimic groups (0.117 ± 0.002, 0.188 ± 0.032, t = 5.98, 3.24, P < 0.01, < 0.05, respectively) . Western blot analysis showed that the expression of melanogenesis-related proteins TYR and MITF in both human primary melanocytes and human MNT1 melanoma cells was significantly lower in the miR-193b-5p mimic groups than in the miR-NC mimic groups (all P < 0.01) . TargetScan analysis and dual-luciferase reporter assay revealed a binding site for miR-193b-5p in the 3′ untranslated region of the transcriptional regulator CITED2. After up-regulation of miR-193b-5p expression in human primary melanocytes and human MNT1 melanoma cells, the CITED2 mRNA and protein expression levels significantly decreased compared with the miR-NC mimic groups (all P < 0.05) . Conclusion:miR-193b-5p overexpression can down-regulate the expression of melanogenesis-related proteins TYR and MITF, and then inhibit melanogenesis, which may be related to the targeted inhibition of CITED2 expression.

Objective:To evaluate balloon compression-assisted endoscopic injection sclerotherapy (bc-EIS) for the treatment of esophageal varices.Methods:From June 2019 to November 2020, cirrhotic patients with esophageal varices who received endoscopic injection sclerotherapy (EIS) in the First Affiliated Hospital of Anhui Medical University were enrolled in the study. The patients were randomly divided into the bc-EIS group and the traditional EIS group. The number of treatments to eradicate varicose veins, the dose of sclerosing agent used in the first treatment, the number of injection points in the first treatment, the rebleeding rate within 10 months after the operation and the incidence of complications or adverse reactions were compared between the two groups.Results:Ninety-two cases were initially included in the study, and 7 cases were excluded based on exclusion criteria. Finally, 85 cases were included in the data analysis, 47 in the bc-EIS group and 38 in the traditional EIS group. The first eradication rate, the second cumulative eradication rate and the third cumulative eradication rate were 82.98% (39/47), 91.49% (43/47) and 100.00% (47/47) in the bc-EIS group, and they were 10.53% (4/38) ( χ 2=44.125, P<0.001), 31.58% (12/38) ( χ 2=33.023, P<0.001) and 63.16% (24/38) ( χ 2=20.730, P<0.001), respectively in the traditional EIS group, and the differences were statistically significant. The treatment times of eradicating varicose veins in the bc-EIS group and the traditional EIS group were 1.25±0.60 and 3.21±1.41, respectively, with significant difference. The dosage of sclerosing agent in first treatment in the bc-EIS group and the traditional EIS group was 17.66±7.14 mL and 22.92±6.84 mL, respectively ( t=3.441, P=0.001). The numbers of initial injection points in the bc-EIS group and the traditional EIS group were 2.70±0.86 and 2.78±1.04, respectively and the difference was not statistically significant ( t=1.847, P=0.065). The rebleeding rates of the two groups within 10 months after the operation were 2.13% (1/47) and 18.42% (7/38) respectively ( χ 2=4.771, P=0.029). There were no serious complications in the two groups. The incidences of retrosternal pain, nausea and vomiting, abdominal distension and ulcer were 2.13% (1/47), 2.13% (1/47), 4.26% (2/47) and 0.00% (0/47) in the bc-EIS group, and in the traditional EIS group, they were 5.26% (2/38) ( χ 2=0.035, P=0.851), 5.26% (2/38) ( χ 2=0.035, P=0.851), 7.89% (3/38) ( χ 2=0.060, P=0.806) and 7.89% (3/38) ( χ 2=1.877, P=0.171), respectively, without significant difference. Conclusion:Bc-EIS is more effective than traditional EIS for the treatment of esophageal varices with lower postoperative rebleeding rate, which shows better clinical application value.

Objective To investigate the exposure difference of different dosage forms of mycophenolic acid (MPA) between children aged ≤12 and > 12 years old after kidney transplantation. Methods Clinical data of 73 children undergoing kidney transplantation from donation after cardiac death (DCD) were retrospectively analyzed. Postoperative immunosuppressive regimen was MPA+ tacrolimus+glucocorticoid. According to different dosage forms of MPA, all recipients were divided into group A (n=37, mycophenolate mofetil capsules), group B (n=28, enteric-coated mycophenolate sodium) and group C (n=8, mycophenolate mofetil dispersible tablets). All children were divided into ≤12 and > 12 years old groups according to the age of kidney transplantation. The daily dosage of different dosage forms was calculated. The blood concentration (C) of MPA and the area under the curve (AUC) were detected by enzyme-multiplied immunoassay technique. The MPA blood concentration was statistically compared between two age groups at different time points. The recovery of renal function and postoperative complications were assessed. Results No significant differences were observed in the dosage and blood concentration of drug at different time points among groups A, B and C (all P > 0.05). The MPA-C_{4 h} and AUC in the ≤12 years old group were significantly higher than those in the > 12 years old group (both P < 0.05). In group B, the MPA-C_{4 h} of children aged ≤12 years old was significantly higher compared with that in those aged > 12 years old (P=0.016). The MPA-C_{4 h} of children aged ≤12 years old in group B was higher than those in group A and group C, but the differences were not statistically significant (P=0.080). There was no significant difference in the incidence of acute rejection and infection among three groups (both P > 0.05). Conclusions Children of different ages who are given with different dosage forms of MPA after kidney transplantation obtain different exposure rates. The exposure rate of kidney transplant recipients aged ≤12 years old tends to be higher than that of their counterparts aged > 12 years old, mainly seen in the recipients treated with enteric-coated mycophenolate sodium. Therefore, it is necessary to monitor the exposure level of MPA, which provides significant guidance for adjusting the drug dosage of different dosage forms.

Objective:To investigate the clinical efficacy and safety of balloon compression-assisted endoscopic injection sclerotherapy (bc-EIS) for esophageal varices in patients with cirrhosis.Methods:From December 2020 to April 2021, cirrhotic patients with esophageal varices who planned to receive endoscopic treatment in the Department of Gastroenterology of the First Affiliated Hospital of Anhui Medical University were selected and randomly divided into the trial group (treated with bc-EIS) and the control group [treated with endoscopic variceal ligation (EVL)] through computer randomization. The varices eradication rate, rebleeding rate and postoperative adverse reactions in the two groups were studied.Results:During the study, 93 cases were initially included according to inclusion criteria, among which 9 cases were excluded by exclusion criteria. Finally, 84 cases were included for data analysis, with 42 cases in each group. The esophageal varices eradication rate after the first treatment in the trial group was 88.10% (37/42), which was significantly higher than that in the control group [33.33% (14/42)] ( χ2=26.40, P<0.001). The esophageal varices eradication rate after 1 to 2 times and 1 to 3 times of treatment in the trial group were both significantly higher than those in the control group [97.62% (41/42) VS 40.48% (17/42), χ2=29.47, P<0.001; 100.00% (42/42) VS 45.24% (19/42), P<0.001]. The maximum follow-up period was 6 months, and none of the patients had rebleeding in the trial group, and the rebleeding rate in the control group was 4.76% (2/42) ( P=0.494). The incidence of thoracic and abdominal discomfort, nausea and vomiting, and abdominal distension in the trial group and control group were 26.19% (11/42) and 35.71% (15/42) ( χ2=0.51, P=0.474), 2.38% (1/42) and 7.14% (3/42) ( χ2=0.26, P=0.608), and 4.76% (2/42) and 11.90% (5/42) ( χ2=0.62, P=0.430), respectively. No other adverse events such as infection, dysphagia, perforation, esophageal tracheal fistula, esophageal stenosis, or ectopic embolism occurred in any group. Conclusion:Bc-EIS is effective and safe for the treatment of esophageal varices in patients with cirrhosis, with a one-time varices eradication rate of more than 85%, and can be completely eradicated after 1 to 3 times of treatment.

Frailty is the clinical syndrome that occurs due to an increase in personal vulnerability and a decline in the ability to maintain one′s internal balance, which is closely related to the development of bladder cancer in the elderly. The research on frailty of elderly patients with bladder cancer in China is still in its infancy. This article discussed the risks of bladder cancer and frailty, the necessity of preoperative frailty assessment in patients with bladder cancer, commonly used assessment tools, and summarized the limitations of the existing evaluation tools to provide reference for further developing and improving the frailty evaluation tools and applications for bladder cancer patients research provides reference.