Objective:To evaluate the impact of self-crosslinked hyaluronic acid (SCH) gel on endometrium recovery after artificial abortion.Methods:A multicenter, prospective randomized controlled trial was conducted across 18 hospitals from December 2021 to February 2023, involving 382 women who underwent artificial abortion. Participants were randomly allocated to receive either treatment with SCH gel (SCH group) or no treatment (control group) in a 1∶1 ratio. The primary outcome was endometrium thickness in 14 to 18 days after the first postoperative menstruation. Secondary outcomes included changes in menstrual volume during the first postoperative menstruation, menstruation resumption within 6 postoperative weeks, time to menstruation resumption, duration of the first postoperative menstruation, and incidence of dysmenorrhea.Results:Baseline characteristics of participants were comparable between the two groups (all P>0.05), with 95.3% (182/191) in SCH group and 92.7% (177/191) in the control group completed the study. The postoperative endometrial thickness in SCH group was significantly greater than that in the control group [(9.78±3.15) vs (8.95±2.32) mm; P=0.005]. SCH group also had significantly fewer participants with reduced menstrual volume [23 cases (12.6%, 23/182) vs 31 cases (17.5%, 31/177); P=0.038]. Although SCH group experienced less dysmenorrhea during the first postoperative menstrual period, this difference was not statistically significant [28.5% (51/179) vs 37.1% (65/175); P=0.083]. Outcomes were similar between SCH group and the control group regarding the proportion of participants who resumed menstruation within 6 weeks postoperatively, time to menstruation resumption, and duration of the first postoperative menstruation ( P=0.792, 0.485, and 0.254, respectively). No serious adverse events were observed during the study period, and no adverse events were attributed to SCH gel treatment. Conclusion:The application of SCH gel after artificial abortion is safe and might aid in the recovery of the endometrium.

ERα-36 is a novel subtype of estrogen receptor α which promotes tumor cell proliferation, invasion and drug resistance, and it serves as a therapeutic target. However, only small-molecule compounds targeting ERα-36 are under development as anticancer drugs at present. Gene therapy approach targeting ERα-36 can be explored using recombinant adenovirus armed with decoy receptor. The recombinant shuttle plasmid pDC316-Ig κ-ERα-36-Fc-GFP was constructed via genetic engineering to express an Ig κ-signaling peptide-leading secretory recombinant fusion protein ERα-36-Fc. The recombinant adenovirus Ad-ERα-36-Fc-GFP was subsequently packaged, characterized and amplified using AdMax^TM adenovirus packaging system. The expression of fusion protein and functional outcome of Ad-ERα-36-Fc-GFP transduction were further analyzed with triple-negative breast cancer MDA-MB-231 cells. Results showed that the recombinant adenovirus Ad-ERα-36-Fc-GFP was successfully generated. The virus effectively infected MDA-MB-231 cells which resulted in expression and secretion of the recombinant fusion protein ERα-36-Fc, leading to significant inhibition of EGFR/ERK signaling pathway. Preparation of the recombinant adenovirus Ad-ERα-36-Fc-GFP provides a basis for further investigation on cancer gene therapy targeting ERα-36.
Adenoviridae/genetics* ; Cell Proliferation ; Estrogen Receptor alpha/metabolism* ; Recombinant Proteins ; Transfection

Objective:To evaluate the role of Nod-like receptor family pyrin domain-containing 3 (NLRP3) in the dorsal root ganglion (DRG) in persistent postoperative pain in rats.Methods:Forty-eight male Sprague-Dawley rats, in which IT catheters were successfully implanted, weighing 200-250 g, aged 2-3 months, were divided into 4 groups ( n=12 each) using a random number table method: sham operation group (S group), persistent postoperative pain group (P group), persistent postoperative pain+ NLRP3-siRNA group (P+ siRNA group) and persistent postoperative pain+ NLRP3-scrRNA group (P+ scrRNA group). A persistent postoperative pain model was established by skin/muscle incision and retraction (SMIR) in anesthetized animals.Normal saline 10 μl were intrathecally injected in S group and P group, NLRP3-siRNA 10 μl and NLRP3-scrRNA 10 μl were intrathecally injected in CP+ siRNA group and CP+ scrRNA group, respectively, at 3 days before operation.The mechanical paw withdrawal threshold (MWT) was measured at 1 day before operation (T 0) and 1, 5, 10, 15 and 20 days after operation (T 1-5). Six rats in each group were randomly selected and sacrificed at T 3, and the L 4-5 DRGs on the operated side were harvested for determination of the expression of NLRP3 and caspase-1 (by Western blot), NLRP3 mRNA expression (by real-time polymerase chain reaction) and content of interleukin-1beta (IL-1β) (by enzyme-linked immunosorbent assay). Results:Compared with group S, the MWT was significantly decreased at T 2-5, the expression of NLRP3 protein and mRNA in DRGs was up-regulated, and the content of IL-1β was increased in group P ( P<0.05). Compared with group P, the MWT was significantly increased at T 2-5, the expression of NLRP3 protein and mRNA and caspase-1 was down-regulated, and the content IL-1β was decreased in group P+ siRNA ( P<0.05), and no significant change was found in the parameters mentioned above in group P+ scrRNA ( P>0.05). Conclusion:NLRP3 in DRGs is involved in the development of persistent postoperative pain, and the mechanism may be related to the development of NLPR3 inflammasomes which further induces peripheral neuroinflammatory response in rats.

Objective:To compare the treatment outcomes of neoadjoint therapy combined with liver transplantation versus radical hepatectomy for patients with surgically resectable hilar cholangiocarcinoma.Methods:A retrospective study was performed on the data of 64 patients with resectable hilar cholangiocarcinoma operated from January 2009 to December 2014 at the Organ Transplantation Department of the First Central Hospital of Tianjin. There were 43 males and 21 females, with an average age of 61.2 years. There were 45 patients who underwent radical hepatectomy in the liver resection group, and 19 patients who underwent combined neoadjuvant therapy (radiotherapy combined with 5-fluorouracil intravenous drip, transcatheter lumen radiotherapy, capecitabine oral administration) and liver transplantation in the liver transplantation group. The recurrence rates and survival rate were compared between groups.Results:The 1, 3 and 5 years cumulative survival rates of the liver transplantation group were 89.5%, 73.7% and 63.2%, respectively, which were significantly better than those of the liver resection group (80.0%, 53.3% and 35.6%) ( P<0.05). The postoperative tumor recurrence rate in the liver transplantation group was 31.6% (6/19), which was significantly lower than that in the liver resection group of 60.0% (27/45) ( P<0.05). Subgroup analysis using postoperative pathological results showed the cumulative survival rates of patients without lymph node metastasis (N 0) and those with negative resection margins (R 0) were not significantly different between groups ( P>0.05). However, for patients with regional lymph node invasion (N 1) and with R 0 resection margin, the cumulative survival rates at 1, 3 and 5 years after liver transplantation were 83.3%, 66.7% and 50.0%, respectively, which were significantly superior to the 64.3%, 28.6% and 14.3% of the liver resection group ( P<0.05). Conclusion:Hepatectomy is recommended for patients with N 0 R 0 resectable hilar cholangiocarcinoma. For patients with hilar cholangiocarcinoma with marginally resectable N 1R 0, neoadjuvant therapy combined with liver transplantation resulted in significantly better long-term overall survival than resection.

Objective To compare the difference of clinical efficacy between surgical magnifying glass and surgical microscope assisted hepatic artery reconstruction in living donor liver transplantation (LDLT). Methods Clinical data of 272 donors and recipients undergoing LDLT were retrospectively analyzed. According to different patterns of hepatic artery reconstruction, all recipients were divided into the magnifying glass group (n=189) and microscope group (n=83). The operation time, intraoperative blood loss, hepatic artery reconstruction site, diameter of anastomosis, incidence of postoperative complications and survival rate of recipients were statistically compared between two groups. Results Compared with the microscope group, the operation time, hepatic artery reconstruction time and intraoperative blood loss were significantly less in the magnifying glass group (all P < 0.001). The most common site of hepatic artery reconstruction was the right hepatic artery in two groups, and the diameter of anastomosis was (2.1±0.9) mm in the magnifying glass group and (2.1±0.8) mm in the microscope group, with no statistical significance between two groups (P > 0.05). The 1-, 2- and 3-year survival rates of recipients in the magnifying glass group were 88%, 86% and 85%, which did not significantly differ from 89%, 87% and 86% in the microscope group (all P > 0.05). The incidence of postoperative complications did not significantly differ between two groups (all P > 0.05). Conclusions The efficacy and safety of hepatic artery reconstruction in LDLT under surgical magnifying glass are equivalent to those under surgical microscope, with less operation workload and intraoperative blood loss. For experienced transplantation surgeons, it is recommended to perform hepatic artery reconstruction assisted by surgical magnifying glass.

Objective:To analysis the construction of the world's top PhaseⅠclinical trial registration agencies, compare their size, composition, operation and funding, to provide further reference for the construction of clinical trial agency in China.Methods:Search for PhaseⅠclinical trial research agencies by region on clinicaltrials.gov. Collecting information about the agency’s management, staffing, implementation in Asia, America and Europe. Descriptive analysis was carried out to explore the type, proportion and operation among different regions, the organizational structure, operational management and effectiveness of each agency from different regions were compared.Results:The United States, Europe and East Asia are dense areas of PhaseⅠclinical research around the world. The types of agencies in the United States, Britain, France, Germany, South Korea, Japan, and Israel are mainly enterprises. Among other types of agencies, the organizational models are diversified. The agencies have different spatial distances from medical institutions, but possess relatively consistent scale and institutional operation. All the agencies have a stable source of funding.Conclusions:In order to strengthen the construction of clinical trial agencies in China, we should speed up the establishment of a close connection mechanism to promote deep cooperation in clinical trials. Control the construction scale and maintain stable input of the agency. Meanwhile, establish and strengthen international exchanges and cooperation.

Objective To investigate and analyze the applications of liver grafts from donation after death children (≤5 kg) in pediatric liver transplantation.Methods A retrospective analysis was conducted on 18 cases of pediatric recipients using liver grafts from donation after death children (≤5 kg) during January 2013 to December 2015.The survival rate of patients,recovery of liver function,incidence of lung infection,vascular complications and biliary complications were observed,and the causes of deaths were analyzed.Results The median follow-up time of all the patients was 28.4 months (0.06-52.2 months).The 1-and 3-year cumulative survival rate was the same 88.9％,the incidence of lung infection was 22.2％,of vessel complications was 33.3％,and biliary complication rate was 11.1％.Two cases died after liver transplantation.Conclusion The applications of liver donation after death children (≤5 kg) were satisfactory,but there is still relatively limited experience,and further observation and research are needed.

Objective To determine the reproductive physiology and blood physiological and biochemical characteristics of SPF Yorkshire and Landrace swine.Methods Ten reproductive physiology parameters,19 blood physiological parameters and 18 blood biochemical parameters in SPF Yorkshire and Landrace swine were measured using conventional methods and the differences between population,between age groups and between both sexes were analyzed.Results There were no significant differences(P>0.05) in reproductive physiology parameters and most blood physiological and biochemical parameters of the SPF Yorkshire and Landrace swine.A few of parameters,such as blood physiological indices GRAN,HGB,RDW,PLT,PCT,and blood biochemical indices ALKP,CHOL,TBIL,BUN,showed significant difference(P<0.05) between populations,between age groups and between both sexes,however,the values of difference were rather small,deviated from the normal range.Conclusion The physiological and biochemical characteristics of SPF Yorkshire and Landrace swine are basically stable and there is no significant difference compared with other laboratory miniature pigs.This study will provide valuable basic data for raising velvet yield,establishment of animal models and evaluating the genetic quality of closed colony.

Objective The aim of this study was to investigate the polymorphism of SLA class II genes in Canadian SPF Yorkshire and Landrace pigs.Methods Blood samples were obtained from 15 SPF Yorkshire and 22 Landrace pigs for isolation of peripheral blood mononuclear cells respectively, and the DQB1, DRB1 and DQA genes were amplified by PCR after reverse transcription.SLA class II genes were obtained by analyzing the direct and cloning result.The polymorphism of alleles was analyzed using the DNAsp 5.0 software.Results A total of 25 alleles were identified at three genes, including eight DQB1, ten DRB1 and seven DQA, and three alleles were submitted the complete sequences for the first time.The official allele names were assigned as SLA-DQB1*0212 (KU754590), SLA-DQB1*0203 (KU754591) and DRB1*06:07(KU754601) by the SLA Nomenclature Committee.Three novel DQA alleles were discovered.Five of the 15 amino acids, one of the 16 amino acids and 11 of the 19 amino acids, which bind processing antigens, showed well conserved among the alleles of DQB1, DRB1 and DQA genes in the SPF Yorkshire and Landrace pigs, respectively.Neighbor-joining tree showed that the three genes were divided into two clusters, respectively.There was a close relationship between SPF Yorkshire and Landrace pigs and foreign Yucatan miniature pigs, and it showed no obvious genetic distance with other pigs.Conclusions A total of 25 SLA class II alleles have been identified successfully in this study, and there are more abundant polymorphism for them.There is a widely distribution for SLA class II alleles identified in this study in other pig breeds.It is critical for the eventual future use of SPF Yorkshire and Landrace pigs as classical laboratory animal models.

Objective To investigate the rehabilitation effect of folic acid,intravenous and oral lipoic acid sequential therapy combined with plantar acupoint massage on treatment of patients with high-risk diabetic foot (DF).Methods A total of 120 patients with high-risk DF were randomly divided into 4 groups.The control group was given routine therapy of diabetes.Besides the basic treatment,folic acid was given in the folic acid group.On the basis of the folic acid group,lipoic acid was used in lipoic acid group with oral taken after two weeks of intravenous drip.The massage group was treated with plantar acupoint massage on the basis of the lipoic acid group,and the treatment course was 6 months.The Toronto symptom and sign score,the brachial ankle pulse wave velocity (baPWV),the ankle brachial ratio (ABI) and the score of life quality of four groups were compared before and after the intervention.Results The homocysteine and the baPWV in the folic acid group,the lipoic acid group and the massage group were significantly lower than those in the control group (P ＜0.01).Except for the folic acid group,The Toronto symptom and sign score in the other two groups was significantly lower than that in the control group (P ＜ 0.01).Except for the folic acid group,ABI of the lipoic acid group and the massage group was significantly higher than that of the control group (P ＜0.01).The score of life quality in the lipoic acid group and the massage group were significantly lower than that in the control group (P ＜ 0.01).The oxidized low density lipoprotein in the lipoic acid group and the massage group were significantly lower than that in other two groups (P ＜ 0.01).Conclusion Folic acid,intravenous and oral lipoic acid sequential therapy combined with plantar acupoint massage can improve the effect of DF patients.