Taxifolin (TAX) is a natural compound known for its liver protection effect, but the mechanism remains unknown. Phosphorylated proteomics analyses discovered that the phosphorylation level of NDRG1 at T328 was a key event of TAX-improved liver fibrosis. We established models with NDRG1 knockout (KO) in vivo and in vitro, demonstrating that NDRG1 KO attenuated the development of hepatocyte injury, and combining NDRG1 KO and TAX administration did not result in a reduction in protection against liver injury. Cellular thermal shift assay and surface plasma resonance analysis showed that TAX directly binds to NDRG1 rather than its upstream kinase, subsequently demonstrating that TAX regulated phosphorylation of NDRG1 at T328 through binding to its C289 site. NDRG1 T328A (phosphorylated mutation) and T328E (mimic phosphorylation) in vivo and in vitro confirmed that pNDRG1_T328 exacerbates hepatocyte injury along with DNA damage, inflammatory response, and apoptosis, thereby contributing to hepatic stellate cells (HSCs) activation. In contrast, TAX can inhibit the above pathological abnormalities and block hepatocyte injury-triggered HSCs activation and fibrosis. Overall, TAX is a potent liver protection drug primarily targeting NDRG1 and inhibiting pNDRG1_T328 in hepatocytes.

Objective:To analyze the results of unqualified blood screening among blood donors in Shaoxing region.Methods:257 145 blood samples from volunteer blood donors from 2017 to 2021 were tested for HBsAg,HCV,HIV,TP,ALT,HTLV,and NAT.All blood test results were analyzed retrospectively.Results:Over the 5-year period,the average failure rate of the tests for volunteer blood donors was 1.22％.In the descending order from high to low,the positive rates of ALT,HBsAg,NAT,TP,HCV,HIV,HTLV were 0.32％,0.25％,0.20％,0.19％,0.17％,0.07％,and 0.01％respecitively.Of these,HBsAg(x2=65.23),ALT(x2=47.32),and HCV(x2=12.73)were significantly different between different years(P＜0.05),but TP(x2=4.19),HIV(x2=7.58),NAT(x2=7.62),and HTLV(x2=6.75)were no significant differences(P＞0.05).And the positivity rates of HBsAg and HCV was a trend of decreasing.By comparing nucleic acid and enzyme immunoassay positive tests,the two methods were found to complement each other.The age and gender distribution difference of the positive population could help to better ensure safe blood recruitment.Conclusion:It is necessary to strengthen blood testing efforts and continuously pay attention to the changing patterns of positive blood-borne diseases in order to improve blood quality and safety.

T cell receptors(TCR)immune repertoire is sum of all TCR in body,and diversity of TCR immune repertoire is closely related to HIV recognition and immune escape.High-throughput immune repertoire sequencing technology is able to detect and analyze all sequences of TCR immune repertoire,truly reflect genetic information of all TCR,and comprehensively reveal complexity and diversity of TCR immune repertoire.Analysis of changes in TCR immune group database of HIV patients through high-throughput sequencing technology can monitor their diagnosis and treatment,disease progression and prognosis,and can also contribute to vaccine development,latent reservoir clearance and clinical efficacy evaluation,so as to provide a theoretical basis for enriching prevention and treatment ideas and targets of HIV/AIDS.

Acquired immune deficiency syndrome is an infectious disease with high mortality caused by human immunodefi-ciency virus(HIV).Even after antiretroviral therapy,the virus reservoir formed by the provirus integrated in the host genome can evade host immune surveillance and clearance.The existing methods of HIV reservoir detection mainly include cell culture induced virus growth assay in vitro and direct detection of the provirus genome based on PCR technology.Understanding and measuring accurately of HIV reservoir can provide reliable technical basis for HIV treatment research.This article summarizes and analyzes various detection methods of HIV reservoirs in recent years and their advantages and disadvantages,in order to select the suitable method for different detection objects of HIV reservior,and give appropriate suggestions,to provide technical support and theoretical guidance for further research on acquired immune deficiency syndrome.

Standardization is the universal language of the world, and standardization of traditional Chinese medicine (TCM) is essential for its communication in China and globally. However, the principles and methods of TCM acupuncture standardization have been unclear and inadequate in the early stages. Based on an investigative approach to understanding the current status, identifying problems, and finding solutions, our team has established basic principles of TCM acupuncture that embody Chinese wisdom, evaluated the international strategic environment systematically, proposed the principle of “importance of harmony and exercise of impartiality”, and established basic working principles. A series of methods for TCM acupuncture standard development and evaluation have been constructed, including general standards for the revision of TCM acupuncture standards, the first TCM acupuncture clinical research management specification, a shared full chain technology platform, a data center, and an evaluation research base for TCM acupuncture clinical research. Evaluation criteria for ancient literature and expert experience, a recommendation method for the “three main and three auxiliaries” TCM guideline for prevention were established, and quantifiable assessment methods of TCM standard applicability were proposed. These findings provide methodological guidance for TCM acupuncture standardization.

Objective:To evaluate the safety and clinical efficacy of the novel double disc-shaped gastrointestinal occluder (hereinafter referred to as occluder) in treatment of refractory tracheoesophageal fistula (TEF).Methods:From July 1, 2020 to January 31, 2021, 10 patients with refractory TEF treated with occluder at Department of Gastroenterology, the First Affiliated Hospital with Nanjing Medical University were collected. The patients′ clinical data such as gender, age, body mass index and fistula diameter were recorded. The success rate of operation, intraoperative and postoperative complications, operation time, postoperative hospital stay, efficacy of fistula closure and postoperative recovery were analyzed. The Karnofsky score and body mass index of patients 1 month and 3 months after operation were compared with those before operation for curative effect evaluation. Paired t test was used for statistical analysis. Results:Among the 10 TEF patients, there were 7 males and 3 females, the median age was 64.5 years old (ranged from 49.0 to 78.0 years old), the body mass index was (18.0±2.5) kg/m 2 and the diameter of the fistula was (1.2±0.6) cm. Occluder placement was successful in all patients. The operation time was (17.6±7.8) min (ranged from 7.0 to 30.0 min). Two cases had little bleeding during the operation, and there was no bleeding after the operation. The postoperative hospital stay was (5.9±4.0) d (ranged from 1.0 to 12.0 d). Among the 10 TEF patients, fistula of 5 patients were completely blocked, 4 cases were partially blocked and 1 case was ineffectively blocked, the effective rate of blocking was 9/10. One month follow-up after operation showed that the symptoms of choking and coughing during eating were significantly improved in 9 patients, and the symptoms of choking and coughing during eating were significantly improved in 1 patient after waist diameter of 12 mm occluder was replaced with the occluder of 15 mm. The 3-month follow-up after operation showed that the occluders were in the right place in 8 patients, the occluder was displaced in 1 patient and the occluder was removed and treated with enteral nutrition. One patient died due to the recurrence of esophageal cancer. The Karnofsky score of TEF patients 3 months after operation and the body mass index of TEF patients 1 month and 3 months after operation were higher than those before operation (70.0±34.0 vs. 46.0±10.7, (19.32±2.59) and (19.73±2.92) kg/m 2 vs. (18.03±2.50) kg/m 2), and the differences were statistically significant ( t=-3.09, -2.37 and -2.82, all P<0.05). Conclusions:Gastrointestinal occluder is safe and effective in the treatment of refractory TEF.

Osteoporotic vertebral compression fracture (OVCF) can lead to lower back pain and may be even accompanied by scoliosis, neurological dysfunction and other complications, which will affect the daily activities and life quality of patients. Vertebral augmentation is an effective treatment method for OVCF, but it cannot correct unbalance of bone metabolism or improve the osteoporotic status, causing complications like lower back pain, limited spinal activities and vertebral refracture. The post-operative systematic and standardized rehabilitation treatments can improve curative effect and therapeutic efficacy of anti-osteoporosis, reduce risk of vertebral refracture, increase patient compliance and improve quality of life. Since there still lack relevant clinical treatment guidelines for postoperative rehabilitation treatments following vertebral augmentation for OVCF, the current treatments are varied with uneven therapeutic effect. In order to standardize the postoperative rehabilitation treatment, the Spine Trauma Group of the Orthopedic Branch of Chinese Medical Doctor Association organized relevant experts to refer to relevant literature and develop the "Guideline for postoperative rehabilitation treatment following vertebral augmentation for osteoporotic vertebral compression fracture (2022 version)" based on the clinical guidelines published by the American Academy of Orthopedic Surgeons (AAOS) as well as on the principles of scientificity, practicality and advancement. The guideline provided evidence-based recommendations on 10 important issues related to postoperative rehabilitation treatments of OVCF.

Aim To explore the effect of Tanxiang Qingyan Tablets on rat model with chronic bronchitisand the effect of MyD88/NF-κB/ICAM-1 signaling pathway expression in bronchopulmonary tissues of rats.Methods A rat model of chronic bronchitis was established by smoking method combined with lipopolysaccharide(LPS,2g·L-1)tracheal injection.The rats were randomly divided into normal group,sham operation group,model group,and positive drug(Guilong Ruikening tablets)1 g·kg-1)group,Tanxiang Qingyan Tablet high,medium and low dose(1.44,0.72,0.36 g·kg-1)group,with intragastric interventionin continuous 15 days.The pathological changes of bronchopulmonary tissues were observed by HE staining,and the infiltration of bronchial inflammatory cells was counted; ELISA method was used to detect the contents of tumor necrosis factor(TNF-α)and interleukin 10(IL-10)in peripheral serum; Western blot and immunohistochemical methodswere employed to detectmyeloid cell differentiation protein 88(MyD88),nuclear transcription factor-κB(NF-κB)and anti-intercellular adhesion molecule 1(ICAM-1)protein expression in bronchopulmonary tissues.Results Compared with normal group and sham operation group,the bronchial mucosal epithelial cells of model group were severely damaged,the alveolar septum was widened,the bronchial inflammatory infiltrationsignificantly increased,the serum TNF-α levels significantly increased,IL-10 levels decreased, and MyD88,NF-κB and ICAM-1 protein expression levels increased significantly(P<0.05,0.01)in bronchopulmonary tissues; compared with model group,the pathological damage and inflammatory changes of the bronchopulmonary tissues of rats in Tanxiang Qingyan Tablet group were reduced,and the serum TNF-α content was significantly reduced,IL-10 content did not change significantly,and MyD88,NF-κB and ICAM-1 protein expression levels in bronchopulmonary tissues were significantly down-regulated(P<0.05,0.01).Conclusions Tanxiang Qingyan Tablets can effectively improve bronchopulmonary tissue inflammatory infiltration,which may be related to reducing the release of inflammatory mediators such as TNF-α and regulating the expression of MyD88/NF-κB/ICAM-1 signaling pathway.

OBJECTIVE To investigate whether Renqing Changjue has a protective effect on acute respiratory dis?tress syndrome (ARDS) induced by endotoxin lipopolysaccharide (LPS) in rabbits. METHODS Thirty-six healthy male New Zealand white rabbits were randomly divided into six groups: normal control group, model group, dexamethasone group, Renqing Changjue high, middle and low dose group, with six rabbits in each group. LPS was used to replicate the ARDS model after five consecutive days of gavage. Arterial pressure, respiratory rate and anal temperature blood were recorded for arterial blood gas analysis at 0, 0.5, 1, 2 and 4 h, respectively. At the end of the four-hour experiment, rab?bits were killed by bloodletting, and the lung tissue was quickly removed to determine the cytokines, SOD, MDA and pathological examination of rabbit lung. RESULTS Renqing Changjue can significantly reduce the pathological changes of lung in ARDS model group. The expression of AQP1 and MPO in rabbit lung was significantly decreased by immuno?histochemistry (P<0.05) ,reduce the lung wet/dry weight ratio, increase the ratio of PaO2/FiO2, inhibit the release of inflammatory factors and scavenge free radicals and antioxidant effects. CONCLUSION Renqing Changjue can effec?tively protect rabbits with acute respiratory distress syndrome induced by LPS, and may protect the lung by inhibiting the release of cytokines and anti-oxidation.

Theophylline acts as a bronchodilator and has an anti-inflammatory effect. In addition, theophylline can be applied in patients where there are concerns regarding the side-effects of corticosteroids. This retrospective case series evaluated theophylline-based therapy in tracheal collapse (TC) canine patients. Forty-seven dogs with TC that received theophylline-based therapy during 2013–2017 were investigated. A fluoroscopic examination was performed to diagnose and grade TC. Theophylline was prescribed (7.5–30 mg/kg PO q12h) and the theophylline serum concentrations were measured. Coughing was assessed using a coughing scoring scale. The mean coughing score decreased after the theophylline-based therapy compared with that observed before treatment. Clinical improvements were observed in 46/47 patients (97.9%). As the intrathoracic TC grading increased, the final theophylline dosage also increased (p value 0.019). The symptom-free period (SFP) with therapy was 189.7 ± 194.45 days (range, 0–720 days) and there was no statistically significant correlation between the SFP and age, sex, or TC grade on fluoroscopy. Although theophylline has generally been used as a third-line treatment, it was used as the main treatment in this study and most patients showed improvements. Dogs have a wider therapeutic index of serum concentrations than humans, and any undesirable effects were easily overcome. With further research, this therapy may prove to be a useful approach, but its safety for long-term use in the treatment of canine TC patients needs to be established.
Adrenal Cortex Hormones ; Animals ; Cough ; Dogs ; Fluoroscopy ; Humans ; Retrospective Studies ; Theophylline