Objective We reviewed and analyzed the epidemiological data of 83 imported dengue fever cases reported in Fengtai District, Beijing, from 2007 to 2025, to delineate their epidemiological characteristics and guide the dengue fever prevention and control strategy in the future. Methods Data on dengue fever cases in Fengtai District from 2007 to 2025 were collected to identify the epidemic factors and characteristics using descriptive epidemiological method. Results All 83 dengue fever cases reported in this region over the past two decades have been imported from abroad or other domestic areas, with Southeast Asian countries being identified as the primary source of imported infections, accounting for 42 cases (50.60%), followed by 15 cases (18.07%) from Chinese provinces other than Beijing. The remaining import sources included 13 cases from South Asia,8 from African countries, and each from Oceania, South America, and Europe. Disease onset was found concentrated between May and November. The sex ratio (male-to-female) is 1.59:1. The age of onset ranged from 14 to 61 years old, with a median age of 36. The largest proportion of cases was observed among cadres and office workers (31 cases, 37.35%), followed by businessmen (13 cases, 15.67%), and householders or the unemployed (10 cases,12.05%). Travel visit was identified as the primary reason for their exposure history. Conclusions All dengue fever cases reported in Fengtai from 2007 to 2025 were imported, with an increasing trend of imported cases in Beijing originating from other Chinese provinces. It is essential to strengthen health education for foreign travelers and returning residents, enhance clinical diagnosis and treatment training for medical personnel, eliminate mosquito breeding sites, and reduce mosquito density through active patriotic health campaigns.

To summarize the nursing experience of a child with hypoplastic left heart syndrome undergoing modified total vena cava pulmonary artery anastomosis operation.Preoperative nursing points:to establish a multidisciplinary team to formulate the best surgical plan;implementation of pre-rehabilitation nursing to reduce the risk of surgery.Postoperative nursing points:precise volume management to ensure effective pulmonary circulation perfusion;to reduce pulmonary artery pressure and maintain effective cardiac output;early warning of high risk to prevent thrombosis;nutritional support should be strengthened and protein-losing enteropathy should be alert for its incidence.Phase Ⅰ cardiac rehabilitation training should be strengthened to improve cardiopulmonary function.After careful treatment and nursing care,the child recovered and was discharged on the 28 th day after surgery.

Objective To investigate the effect and mechanism of curculigoside(CUR)on hippocampal neuron injury in epileptic rats.Methods Forty-eight rats were selected,and the epileptic rat models were established by induction with 35 mg/kg pentylenetetrazol.The epileptic rats were randomly divided into the epilepsy group,the epilepsy+low-dose CUR group(the epilepsy+CUR-L group),the epilepsy+high-dose CUR group(the epilepsy+CUR-H group),and the epilepsy+CUR-H+PI3K activator 740Y-P group(the epilepsy+CUR-H+740Y-P group),with 12 rats in each group.Another 12 rats that were intraperitoneally injected with the same amount of normal saline were taken as the control group.Four weeks after administration,the behavioral changes of rats in each group were observed.Nissl staining was applied to determine the neuronal changes in hippocampal tissue.Immunohistochemistry was applied to detect the number of microglia in hippocampal tissue.ELISA was applied to detect the levels of interleukin-6(IL-6),IL-1β,and gamma-aminobutyric acid(GABA)in hippocampal tissue.TUNEL staining was applied to analyze the level of neuronal apoptosis in hippocampal tissue.Western blot was applied to detect the phosphorylation levels of PI3K,Akt and mTOR in hippocampal tissue.Results Compared with the control group,the Racine score and the frequency of epileptic seizures in rats,and the number of microglia,level of IL-6,level of IL-1β,the apoptosis rate of neurons,and levels of p-PI3K/PI3K,p-Akt/Akt,p-mTOR/mTOR in hippocampal tissue in the epilepsy group were obviously increased(P<0.05),while the level of GABA in hippocampal tissue was obviously reduced(P<0.05),and the arrangement of neurons in hippocampal tissue was disordered,with neuronal loss.Compared with the epilepsy group,the Racine score,and the frequency of epileptic seizures in rats,and the number of microglia,levels of IL-6,levels of IL-1β,the apoptosis rates of neurons,and levels of p-PI3K/PI3K,p-Akt/Akt,p-mTOR/mTOR in hippocampal tissue in the epilepsy+CUR-L group and the epilepsy+CUR-H group were significantly decreased(P<0.05),while the levels of GABA in hippocampus tissue were significantly increased(P<0.05),the loss and necrosis of neurons in hippocampus tissue were decreased,and the disorder of cell arrangement was improved.Compared with the epilepsy+CUR-H group,the Racine score and the frequency of epileptic seizures in rats,and the number of microglia,level of IL-6,level of IL-1β,the apoptosis rate of neurons,and levels of p-PI3K/PI3K,p-Akt/Akt,p-mTOR/mTOR in hippocampal tissue in the epilepsy+CUR-H+740Y-P group were significantly increased(P<0.05),while the level of GABA in hippocampus tissue was significantly decreased(P<0.05),the loss and necrosis of hippocampal neurons increased,and the cell arrangement was disordered.Conclusion CUR may reduce hippocampal neuron damage in epileptic rats by downregulating the PI3K/Akt/mTOR signaling pathway.

This study aims to investigate the mechanism of Mahuang Lianqiao Chixiaodou Decoction(MHLQ) and its main active components in treating immunoglobin A nephropathy(IgAN). The rat model of IgAN was established by a combination of measures including gavage of bovine serum albumin, subcutaneous injection of carbon tetrachloride, and tail vein injection of lipopolysaccharide. The modeled rats were randomized into model, low-, medium-, and high-dose(1.773, 3.545, and 7.090 g·kg~(-1), respectively) MHLQ, phillyrin(PHI, 0.020 g·kg~(-1)), pseudoephedrine(PSE, 0.020 g·kg~(-1)), and losartan potassium(LP, 9.003 mg·kg~(-1)) groups, and Wistar rats were used as the control. Rats were administrated with corresponding drugs by gavage, and those in the control and model groups received an equal volume of normal saline. All the groups were treated for 4 consecutive weeks. Urine, serum, liver, and kidney samples were collected from rats in each group at the end of drug administration. The 24 h urine protein and renal function were examined, and staining was performed to observe the pathological changes in the renal tissue. The immunofluorescence assay was employed to detect the expression of IgA and complement C3/C3b/C3c in the renal tissue. Electron microscopy was employed to observe the ultrastructure of the renal tissue. Enzyme-linked immunosorbent assay was performed to determine the expression of complement C3 and sublytic C5b-9 in the serum and renal tissue. Western blot was performed to determine the expression levels of hepatic and renal complement C3/C3b/C3c, C5/C5a, C5b-9, and complement factor B(CFB). Immunohistochemistry(IHC) was employed to measure the expression of complement C3 in the renal tissue. The results showed that compared with the control group, the model group had elevated levels of blood urea nitrogen and serum creatinine, proliferation of glomerular mesangial cells and extracellular matrix, and glomerular deposition of IgA immune complexes or electron-dense material. In addition, the model group showcased increased serum C3 levels and up-regulated expression of CFB, C3/C3b/C3c, C5/C5a, and C5b-9 in the renal tissue and C3/C3b/C3c and C5b-9 in the hepatic tissue. After treatment with MHLQ and its active components, all of the above indexes were reversed. In conclusion, MHLQ and its active components can improve the renal function and reduce the deposition of immune complexes and pathological damage in the renal tissue of the rat model of IgAN by inhibiting the alternative pathway complement activation.
Animals ; Drugs, Chinese Herbal/administration & dosage* ; Glomerulonephritis, IGA/genetics* ; Rats ; Male ; Disease Models, Animal ; Rats, Wistar ; Complement Activation/drug effects* ; Kidney/immunology* ; Humans

Objective To investigate the effect and mechanism of curculigoside(CUR)on hippocampal neuron injury in epileptic rats.Methods Forty-eight rats were selected,and the epileptic rat models were established by induction with 35 mg/kg pentylenetetrazol.The epileptic rats were randomly divided into the epilepsy group,the epilepsy+low-dose CUR group(the epilepsy+CUR-L group),the epilepsy+high-dose CUR group(the epilepsy+CUR-H group),and the epilepsy+CUR-H+PI3K activator 740Y-P group(the epilepsy+CUR-H+740Y-P group),with 12 rats in each group.Another 12 rats that were intraperitoneally injected with the same amount of normal saline were taken as the control group.Four weeks after administration,the behavioral changes of rats in each group were observed.Nissl staining was applied to determine the neuronal changes in hippocampal tissue.Immunohistochemistry was applied to detect the number of microglia in hippocampal tissue.ELISA was applied to detect the levels of interleukin-6(IL-6),IL-1β,and gamma-aminobutyric acid(GABA)in hippocampal tissue.TUNEL staining was applied to analyze the level of neuronal apoptosis in hippocampal tissue.Western blot was applied to detect the phosphorylation levels of PI3K,Akt and mTOR in hippocampal tissue.Results Compared with the control group,the Racine score and the frequency of epileptic seizures in rats,and the number of microglia,level of IL-6,level of IL-1β,the apoptosis rate of neurons,and levels of p-PI3K/PI3K,p-Akt/Akt,p-mTOR/mTOR in hippocampal tissue in the epilepsy group were obviously increased(P<0.05),while the level of GABA in hippocampal tissue was obviously reduced(P<0.05),and the arrangement of neurons in hippocampal tissue was disordered,with neuronal loss.Compared with the epilepsy group,the Racine score,and the frequency of epileptic seizures in rats,and the number of microglia,levels of IL-6,levels of IL-1β,the apoptosis rates of neurons,and levels of p-PI3K/PI3K,p-Akt/Akt,p-mTOR/mTOR in hippocampal tissue in the epilepsy+CUR-L group and the epilepsy+CUR-H group were significantly decreased(P<0.05),while the levels of GABA in hippocampus tissue were significantly increased(P<0.05),the loss and necrosis of neurons in hippocampus tissue were decreased,and the disorder of cell arrangement was improved.Compared with the epilepsy+CUR-H group,the Racine score and the frequency of epileptic seizures in rats,and the number of microglia,level of IL-6,level of IL-1β,the apoptosis rate of neurons,and levels of p-PI3K/PI3K,p-Akt/Akt,p-mTOR/mTOR in hippocampal tissue in the epilepsy+CUR-H+740Y-P group were significantly increased(P<0.05),while the level of GABA in hippocampus tissue was significantly decreased(P<0.05),the loss and necrosis of hippocampal neurons increased,and the cell arrangement was disordered.Conclusion CUR may reduce hippocampal neuron damage in epileptic rats by downregulating the PI3K/Akt/mTOR signaling pathway.

Objective To explore the correlation between thyroid autoimmunity(TAI)and gestational diabetes mellitus(GDM)in Chinese euthyroid women.Methods A total of 508 euthyroid women were enrolled in the cross-sectional study,who performed their entire clinical/biological workup and oral glucose tolerance test(OGTT)from the department of Gynecology and Endocrinology of the Beijing Obstetrics and Gynecology Hospital,Capital Medical University from June 2023 to June 2024.At median 8(6-10)weeks of gestation,thyroid-stimulating hormone(TSH),free thyroxine(fT4),and thyroid peroxidase antibodies(TPOAb)were measured,baseline characteristics were recorded,and an OGTT was performed between 24 and 28 weeks of pregnancy.According to the OGTT results,they were divided into GDM group(n=169)and non GDM group(n=339).Thyroid parameters,the demographic and obstetric parameters,and the prevalence of TAI were compared with two groups.The factors associated with GDM were analyzed with multivariate Logistic regression analysis.Results The age,body mass index(BMI),and proportion of obese women before pregnancy in the GDM group were all significantly higher than those in the non-GDM group,with statistically significant differences(P<0.001).The proportion of pregnant women over 30 years old in the GDM group was significantly higher than that in the non-GDM group(59.17%vs 6.79%,χ2=168.667,P<0.001).The proportion of obese mothers(BMI≥28 kg/m2)before pregnancy in the GDM group was 24.26%,which was significantly higher than that in the non-GDM group(8.26%)(χ2=24.599,P<0.001).The incidence of TAI in the GDM group was 54.44%,while it was 15.93%in the non-GDM group.The difference between the two groups was statistically significant(χ2=81.659,P<0.001).The results of Logistic regression analysis showed that maternal age over 30 years and pre-pregnancy obesity increased the risk of GDM occurrence in TAI women by 6.08 times(OR=6.08,95%CI 3.61-10.25,P<.001).Conclusion Among early pregnancy women with normal thyroid function,as age increases during follow-up(especially over 30 years old),pre-pregnancy BMI increases(especially in obese individuals),and those with pre-pregnancy TAI,the risk of developing GDM during pregnancy significantly increases.It is necessary to explore preventive strategies for GDM in euthyroid TAI women,with a view to improving adverse pregnancy outcomes.

Objective To investigate the curative effect of letrozole combined with Zi Gui Nv Zhen Capsules on patients with polycystic ovary syndrome(PCOS)complicated by thin endometrial infertility.Methods 140 patients with PCOS who met the diagnosis of endometrial thin infertility(endometrial thickness<0.8 cm and no pregnancy for 1 year without contraception)were recruited and randomly assigned to the control group and the experimental group for 3 cycles of treatment.The control group was given letrozole 2.5 mg/d on the 3rd day of menstruation,estradiol valerate 2 mg/d on the 8-10th day of menstruation,and dydrogesterone 10 mg/d in sequence.The experimental group was treated with Zi Gui Nv Zhen Capsules on the basis of the control group.During 3 cycles of treatment,endometrial thickness(EMT),ovulation rate and cumulative pregnancy rate on the day of ovulation were examined.Results The EMT of the experiment group was significantly higher than that of the control group on the ovulation day of three cycles[(0.86±0.23)cm vs(0.71±0.15)cm;(0.83±0.26)cm vs(0.68±0.19)cm;(0.87±0.26)cm vs(0.71±0.11)cm],the cumulative pregnancy rate of experimental group was significantly higher than that of control group(44.3%vs 25.7%).There was no significant difference in ovulation rate between the two groups(P>0.05).Conclusion Our findings demonstrate that the combined use of Zi Gui Nv Zhen Capsule with basic conventional therapy significantly enhances endometrial thickness and improves pregnancy rates in PCOS patients with thin endometrium.

Objective:To evaluate the short-term efficacy of endoscopic-laparoscopic regional gastric resection combined with sentinel lymph node basin dissection in patients with early-stage gastric cancer.Methods:This is a retrospective case series study. Data of 17 consecutive early gastric cancer patients from a prospective cohort at Beijing Friendship Hospital,Capital Medical University were analyzed between August 2023 and August 2024. Sixteen cases were from the department of general surgery and 1 from the department of gastroenterology. The cohort included 9 males and 8 females,with a mean age of 61.4 years (range: 46 to 79 years). Clinical data,including demographics,pathological features,surgical procedures,and follow-up outcomes,were collected through medical records and databases. All patients were followed for over 3 months,with follow-up ending on December 5,2024.Results:A total of 17 patients were involved. Among them, 5 patients underwent endoscopic submucosal dissection (ESD) combined with laparoscopic sentinel lymph node dissection (LSBD),and another 3 patients who underwent complete ESD resection received LSBD due to pathological stage meeting the expanded indications. 6 patients who underwent non-curative ESD resection received laparoscopic gastric regional resection (LRG) combined with LSBD,and another 3 patients directly received LRG combined with LSBD. The average number of sentinel lymph nodes dissected before surgery ( M(IQR)) was 8.9 (4.5) (range: 4 to 21),and the detection rate and accuracy rate were both 100%. Postoperative pathology confirmed that there was no metastasis in the sentinel lymph nodes of 5 patients who underwent ESD combined with LSBD and 3 patients who underwent LSBD after complete ESD resection. The vertical and horizontal margins of ESD were all negative. One patient was an absolute indication for ESD. For the 6 patients who underwent non-curative ESD resection combined with LRG and LSBD,the horizontal margins were all negative. Two patients showed 1 metastasis in each of the 21 and 9 sentinel lymph nodes during the operation,and additional distal gastrectomy was performed during the operation. Postoperatively,73 and 39 lymph nodes were retrieved respectively. The former had 1 additional metastasis,while the latter had no metastasis. Among the 3 patients who underwent direct LRG combined with LSBD,the horizontal margins were negative. One patient was confirmed as an absolute indication for ESD by postoperative pathology,and one patient had 1 metastasis in 8 sentinel lymph nodes during the operation,and additional distal gastrectomy was performed. Postoperatively,there was no metastasis in 54 lymph nodes. All patients had no complications such as infection,bleeding,perforation,or death after surgery. Among the 14 patients who did not receive additional radical surgery,they were able to pass gas and defecate within 3 days after surgery,with an average hospital stay of 6 days. The nutritional indicators and gastric radionuclide emptying imaging half-emptying time were similar to those before surgery at 3 months after surgery. Conclusions:Laparoscopic and endoscopic cooperative regional gastrectomy with sentinel lymph node basin dissection has the advantages of minimal invasiveness,preservation of gastric function,and precise treatment. It maybe suitable for patients with early-stage gastric cancer at high risk of lymph node metastasis and has good short-term efficacy.

Objective:To explore the application value of right-opening single flap valvuloplasty based on tubular stomach in gastrointestinal reconstruction after laparoscopic proximal gastrectomy.Method:Use a linear cutting stapler to make a parallel curve from the angle of the stomach to the junction of the gastric fundus to remove the lesser curvature of the stomach, and detach the gastric body about 5 cm away from the tumor to create a tubular stomach. Use a marker pen to draw a C-shaped seromuscular flap area with a width of 2.5 cm and a height of 3.5 cm 1.5 cm below the residual stomach closure nail, and create a free muscle flap in the gap between the plasma muscle layer and the submucosal layer. Make a transverse incision of 3 cm at the lower edge of the mucosal bed, and intermittently suture the entire lower edge of the gastric wall with 3 stitches. Under laparoscopy, use 4-0 barbed wire to suture the 1 cm wide muscular layer at the top of the tubular stomach and the posterior wall of the esophagus about 5 cm away from the esophageal stump with 3 stitches. Push the upper end of the tubular stomach into the mediastinum, and then tighten the barbed wire to ensure a tight fit between the stomach and the posterior wall of the esophagus. Use an ultrasonic scalpel to remove the esophageal stump, suture the entire posterior wall of the esophagus with the gastric mucosa, and use barbed wire to suture the anterior wall from left to right. The anastomotic site is completely covered with a free muscle flap, and the barbed line is used to continuously suture the muscle flap along the C-shaped line to the gastric pulp muscle layer at the edge of the mucosal bed, embedding the anastomotic site and completing the reconstruction of the digestive tract.Results:Clinical data of 23 patients (18 from the First Affiliated Hospital of Wenzhou Medical University and 5 from the Quzhou Hospital affiliated with Wenzhou Medical University) who underwent laparoscopic proximal gastrectomy, tubular gastroesophageal anastomosis, and pure manual right flap reconstruction surgery for esophagogastric junction adenocarcinoma and proximal gastric cancer from October 2023 to August 2024. There were 15 males and 8 females, with an age of (65.3±7.7) years, the BMI was (22.9±2.8) kg/m 2. All patients in the group successfully completed the surgery, with a surgery time of (218.5±38.1) minutes, including (73.5±19.2) minutes for anastomosis, intraoperative blood loss of (64.5±15.4) ml, postoperative passage of gas on (3.4±0.5) days, first consumption of liquid food after surgery of (3.9±1.1) days, and postoperative hospital stay of (9.1±0.8) days. One patient developed anastomotic stenosis (grade I) after surgery, presenting with mild swallowing obstruction, which returned to normal after dietary adjustment, and there were no cases of secondary surgery. The median follow-up time for the entire group was 4.0 (0.7-7.0) months, during which there were no deaths or tumor recurrence or metastasis, no complications such as anastomotic stenosis or gastric emptying disorders, and no complaints of acid reflux or heartburn. At one month of postoperative follow-up, the reflux symptom index (RSI) score was (3.1±2.9) points, and at three months, the RSI score was (2.4±1.4) points. Conclusions:The application of right-opening single flap valvuloplasty based on tubular stomach for gastrointestinal reconstruction after laparoscopic proximal gastrectomy is safe,feasible,and has satisfactory short-term efficacy.