Objective To study the expression of PLA2G2A and its significance in vaginal wall tissue of patients with pelvic organ pro-lapse(POP).Methods Twenty-three patients without POP(control group)and 26 patients with POP(POP group)admitted to the Third Affiliated Hospital of Zhengzhou University,between June 2023 and September 2024,were selected.Histological features were observed using hematoxylin and eosin and Masson's trichrome staining.Localization of PLA2G2A was detected using immunofluorescence.The PLA2G2A expression level was assessed using immunohistochemistry,real-time PCR,and Western blotting.After transfecting fibroblasts with silenced PLA2G2A,changes in collagen Ⅰ and collagen Ⅲ were measured.Results The histological structure of the vaginal wall in the POP group was significantly different from that in the control group.PLA2G2A was expressed in fibroblasts,with protein and mRNA expression levels higher than those in the control group(P＜0.05).After silencing PLA2G2A,collagen Ⅰ and collagen Ⅲ expression were upregulated.Conclusion High expression of PLA2G2A in vaginal wall tissue of patients with POP.Increased PLA2G2A expression may be closely related to the development and presence of POP.

Objective To study the expression of PLA2G2A and its significance in vaginal wall tissue of patients with pelvic organ pro-lapse(POP).Methods Twenty-three patients without POP(control group)and 26 patients with POP(POP group)admitted to the Third Affiliated Hospital of Zhengzhou University,between June 2023 and September 2024,were selected.Histological features were observed using hematoxylin and eosin and Masson's trichrome staining.Localization of PLA2G2A was detected using immunofluorescence.The PLA2G2A expression level was assessed using immunohistochemistry,real-time PCR,and Western blotting.After transfecting fibroblasts with silenced PLA2G2A,changes in collagen Ⅰ and collagen Ⅲ were measured.Results The histological structure of the vaginal wall in the POP group was significantly different from that in the control group.PLA2G2A was expressed in fibroblasts,with protein and mRNA expression levels higher than those in the control group(P＜0.05).After silencing PLA2G2A,collagen Ⅰ and collagen Ⅲ expression were upregulated.Conclusion High expression of PLA2G2A in vaginal wall tissue of patients with POP.Increased PLA2G2A expression may be closely related to the development and presence of POP.

OBJECTIVE To set up normal ranges for indexes in embryo-fetal development toxicity studies in Sprague-Dawley(SD)rats and to establish a background database to provide reference for the embryo-fetal development toxicity evaluation of drugs.METHODS The data on embryonic develop-ment and fetal growth from embryo-fetal development toxicity studies(11 items)conducted by our center between 2013 and 2022 was statistically analyzed,involving 205 pregnant rats and 3037 fetuses in total,with the mean and standard deviation,coefficient of variation and 95%confidence interval calculated.The indexes included body mass,body mass gain and food consumption during pregnancy,pregnancy outcomes(pregnancy rate,average corpora lutea,average Implant sites,average live conceptuses,live conceptuse rate,resorption rate and dead conceptuse rate),fetal growth and development(fetal mass,placental mass and sex ratio),appearance abnormality rate,visceral abnormality rate,and skeletal abnormality rate.RESULTS The mass of pregnant rats trended up during gestation,with significant increases in the late period.Food consumption increased along with gestation.Caesarean section was conducted on gestation day 20,and the pregnancy rate was 93.2%.The average corpora lutea,Implant sites and live conceptuses were 18.0±3.2,15.9±2.8 and 14.8±3.0,respectively.The live conceptuse rate was 93.4%while the total dead embryo rate was 6.6%.The average mass of fetuses and placenta were respectively 3.6±0.3 and(0.6±0.3)g,and the fetal sex ratio(male/female)was 0.94.The incidence of fetal appearance abnormalities was about 0.2%,and that of soft tissue abnormalities was approximately 0.8%.The rate of skeletal abnormalities was about 1.2%,with higher incidence of non-ossification and incomplete ossification mostly identified on sternum and hyoid bone.The numbers of ossifications of metacarpal bones,metatarsal bones and sacrococcygeal vertebrae were 7.0±0.7,8.0±0.1 and 7.4±0.5,respectively.The rate of ossification of sternumⅠtoⅣwas higher,with an average of about 98.6%-99.9%.The ossification rates of sternum Ⅴ and Ⅵ were(68.0±28.4)%and(82.8±23.9)%.CONCLUSION The background database of indexes in the embryo-fetal development toxicity study on SD rats is established for our GLP laboratory,which provides reference for reproductive toxicity studies.

Objective:To explore the effects of maternal exposure to Morinda officinalis oligosaccharides (MOO) during lactation on the Sprague-Dawley (SD) maternal rats and their offspring's growth and development. Methods:Seventy-two female rats with a surviving litter size of ≥ 6 were divided into the excipients control group, MOO low-dose group (50 mg/kg), MOO medium-dose group (160 mg/kg), and MOO high-dose group (500 mg/kg) using a snake-shaped grouping based on body weight, with 18 rats per group. The rats were gavage fed once daily until 20 days of delivery. The response of maternal rats after MOO exposure during lactation, as well as the appearance, response, gross anatomical abnormalities of their F1 and F2 offspring were observed. The body weight and food intake of maternal rats during lactation and those of their offspring before and after weaning were measured. The behavior (central nervous system function) of the F1 and F2 offspring was evaluated using functional observation battery (FOB). The learning and memory function of the F1 offspring was evaluated using Y-maze test. The male and female F1 offspring in the same dose group were mated when they were raised to 10-12 weeks in order to observe the reproductive function of F1 female rats.Results:Compared with the excipients control group, no abnormality was found in the clinical observation of maternal rats in the 3 MOO exposure groups during lactation, and there was no significant differences in their body weight and daily food intake during lactation (all P>0.05). No significant effects were found on the appearance, clinical symptoms, gross anatomy, body weight, and food intake of the F1 and F2 offspring after maternal rats receiving MOO exposure during lactation. In the FOB of the F1 and F2 offspring and the Y-maze test of F1 offspring, few differences in MOO exposure groups were observed and lack of significant dose-response relationship. After pregnancy, there were no statistically significant differences in the number of corpus luteum, implantation number, birth index, delivery index, survival index, and weaning index in F1 female offspring of maternal rats exposed to MOO at different doses during lactation compared with those of the excipients control group (all P>0.05). Conclusions:There were no obvious toxic reactions in maternal rats after exposure to different doses of MOO during lactation, nor in the growth and development, nervous system, learning and memory, and reproductive function of their offspring.

Objective:To explore the effects of maternal exposure to Morinda officinalis oligosaccharides (MOO) during lactation on the Sprague-Dawley (SD) maternal rats and their offspring's growth and development. Methods:Seventy-two female rats with a surviving litter size of ≥ 6 were divided into the excipients control group, MOO low-dose group (50 mg/kg), MOO medium-dose group (160 mg/kg), and MOO high-dose group (500 mg/kg) using a snake-shaped grouping based on body weight, with 18 rats per group. The rats were gavage fed once daily until 20 days of delivery. The response of maternal rats after MOO exposure during lactation, as well as the appearance, response, gross anatomical abnormalities of their F1 and F2 offspring were observed. The body weight and food intake of maternal rats during lactation and those of their offspring before and after weaning were measured. The behavior (central nervous system function) of the F1 and F2 offspring was evaluated using functional observation battery (FOB). The learning and memory function of the F1 offspring was evaluated using Y-maze test. The male and female F1 offspring in the same dose group were mated when they were raised to 10-12 weeks in order to observe the reproductive function of F1 female rats.Results:Compared with the excipients control group, no abnormality was found in the clinical observation of maternal rats in the 3 MOO exposure groups during lactation, and there was no significant differences in their body weight and daily food intake during lactation (all P>0.05). No significant effects were found on the appearance, clinical symptoms, gross anatomy, body weight, and food intake of the F1 and F2 offspring after maternal rats receiving MOO exposure during lactation. In the FOB of the F1 and F2 offspring and the Y-maze test of F1 offspring, few differences in MOO exposure groups were observed and lack of significant dose-response relationship. After pregnancy, there were no statistically significant differences in the number of corpus luteum, implantation number, birth index, delivery index, survival index, and weaning index in F1 female offspring of maternal rats exposed to MOO at different doses during lactation compared with those of the excipients control group (all P>0.05). Conclusions:There were no obvious toxic reactions in maternal rats after exposure to different doses of MOO during lactation, nor in the growth and development, nervous system, learning and memory, and reproductive function of their offspring.

Acute－on－chronic liver failure （ACLF） is a serious form of acute decompensation of liver cirrhosis， which is characterized by multiple organ failure， systemic inflammatory response， and a high short－term mortality rate. In 2023， the European Association for the Study of the Liver gave recommendations to clinicians， aiming to help them with the diagnosis of ACLF， the decision of triage （whether it is necessary to transfer a patient to the ICU for treatment）， the identification and management of acute predisposing factors， the identification of organs that need support or replacement therapy， the definition of potential criteria for ineffective ICU treatment， and the determination of potential indications for liver transplantation. This article gives an excerpt of the above main contents in the guidelines.

Coronavirus disease 2019 (COVID-19) is a kind of viral pneumonia which is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The emergence of SARS-CoV-2 has been marked as the third introduction of a highly pathogenic coronavirus into the human population after the severe acute respiratory syndrome coronavirus (SARS-CoV) and the Middle East respiratory syndrome coro-navirus (MERS-CoV) in the twenty-first century. In this minireview, we provide a brief introduction of the general features of SARS-CoV-2 and discuss current knowledge of molecular immune pathogenesis, diagnosis and treatment of COVID-19 on the base of the present understanding of SARS-CoV and MERS-CoV infections, which may be helpful in offering novel insights and potential therapeutic targets for combating the SARS-CoV-2 infection.

Objective To evaluate the changes of serum tumor markers of carbohydrate antigen 125 (CA125),carbohydrate antigen 199 (CA199),carcinoembryonic antigen (CEA) and squamous cell carcinoma antigen (SCC) during anti-tuberculosis treatment in patients with active pulmonary tuberculosis and tuberculous pleurisy.Methods This research was a prospective study.Sixty-three patients with active pulmonary tuberculosis and 24 patients with tuberculous pleurisy underwent blood samplings before treatment,2 and 6 months after treatment.Centaur XP chemiluminescent immunoassay was used to test serum levels of CA125,CA199,CEA and SCC.Thirty healthy subjects were included as controls.Student t-test was used to compare continuous variables,and chi-square test or Fisher exact test was used to compare categorical variables.Serial changes of serum tumor markers levels pre-and post-treatment were analyzed by repeated measures analysis of variance.Binary Logistic regression model was used for multivariate analysis.Results The mean serum CA125 level of the 63 patients with active pulmonary tuberculosis pre-treatment was (64.4± 30.4) U/mL,which was significantly higher than that of healthy controls ([12.7±5.5] U/mL,t=11.98,P＜0.01).The mean serum CA125 level decreased to (16.9±6.1) U/mL after 6 months standardized treatment,which was significantly lower than that before treatment (t=12.74,P＜0.01).While compared with healthy controls,the serum level of CA125 in patients who had completed the standardized treatment was not significantly different (t =0.94,P =0.348).When compared with the healthy controls,serum CA199,CEA,SCC levels in patients with active pulmonary tuberculosis before and after treatment showed no statistically significant difference (P＞ 0.05).Univariate analysis and multivariate analysis by Logistic regression analysis showed that bilateral pulmonary tuberculosis (x2 =7.746,P=0.006; OR=6.99,95％CI:1.73-28.22) and cavity pulmonary tuberculosis (x2 =6.254,P=0.012; OR=7.64,95％CI:1.64-35.35) were associated with increased serum CA125 level.The mean serum CA125 level of 24 cases of tuberculous pleurisy pre-treatment was (81.2 ± 37.6) U/mL,which was both significantly higher than that of patients with active pulmonary tuberculosis (t=2.153,P=0.034) and that of healthy controls (t=12.05,P＜0.01).Similarly,CA125 levels sharply decreased to (15.5 ± 7.3) U/mL after 6 months standardized treatment,which was not statistically significant compared with the control group (t=0.450,P=0.652).However,CA199,CEA and SCC levels in tuberculous pleurisy pre-and post-treatment were all not statistically different from those of healthy controls (all P＞0.05).Conclusion Serum CA125 can be used as a marker for assessing the disease progression and therapeutic efficacy for patients with active pulmonary tuberculosis and tuberculous pleurisy.

Objective A comparative study of clinical factors and dose-volume histogram (DVH)parameters on the impact of radiation pneumonitis occurred in the three-dimensional conformal radiotherapy of lung cancer (lung target)and mediastinal tumors and esophageal (mediastinal target).Methods Review 83cases lung cancer,mediastinal tumors and esophageal patients,and analyzed with chi-square tests on the correlation of the clinical factors (gender,age,tumor location,stage,chemotherapy) with radiation pneumonitis;have relevance analysis between the DVH parameters of two targets and radiation pneumonitis; lung target and mediastinal target volume DVH parameters compared to the t-test.Results ≥2 radiation pneumonitis was 36.5 ％.≥2 radiation pneumonitis occurred in various clinical factors had no significant effect.DVH parameters of the two targets,V5,V10,V20,V30,whole lung dose (MLD) were significantly related to RP.Two targets of RP patients V5 [(50.9±17.8) ％,(69.9±20.4) ％],V10 [(38.6±15.2) ％,(53.5±18.8) ％] were statistically significant by t-test (t =2.434,P ＜ 0.05),while V20 (t =0.388,P ＞ 0.05),V30 (t =0.005,P ＞ 0.05) and MLD (t =0.138,P ＞0.05) were no significant difference (P ＞ 0.05),so the same results with the two targets of patients without RP obtained.Conclusion In the lung target and mediastinal target of radiotherapy radiation pneumonitis is related with DVH parameters,especially V20,V30 and MLD impact on the occurrence of RP.