ObjectiveTo evaluate the correlation between ultrasound detected fetal heart abnormality and chromosomal abnormality.Methods The data of 3307 cases of prenatal fetal echocardiography and karyotype analysis results were retrospectively analyzed.The correlation between heart abnormality and chromsomal abnormality was analyzed.ResultsIn 3307 cases d pregnant women,194cases (5.87％) were found signs of fetal heart abnormality,and 3113 cases (94.13％) were not found any sign of fetal heart abnormality.And 124 cases(3.75％) were found chromosomal abnormality.The rate of chromosomal abnormality in fetus with heart abnormality was higher than that in fetus without heart abnormality[ 19.59％ (38/194) vs.2.76％ ( 86/3113 ),P ＜ 0.01 ],the relative risk ratio was 7.0903.One hundred and twenty-four cases of chromosomal abnormality in the 18-three-body(42 cases) and 21-three-body(36 cases) were the most common.ConclusionsFetal heart abnormality incidence of chromosomal abnormality is high relatively.When the signs of heart abnormality are found,it is suggested that the fetus should examine karyotype analysis.

Objective To explore the relationship of the changes of memory behavior and the of changes of the parameter of synapse structure in the brain cortex and hippocampus of chronic cerebral hypoperfusion rats Methods Chronic cerebral hypoperfusion rat model was established by ligating bilateral common carotid arteries of the old rats (over 12 months) The rats were divided into 3 groups, normal, 2 months ischemia, and 4 months ischemia groups The memory behavior changes were observed with a computerized shuttle training case The ultrastucture of synapse were observed with electron microscopy for the number density, length of activity cord, area of synapses disk, surface density of the synapse, and the results were analyzed with stereology and image analyses The relationship between the behavior and the ultrastructure were studied Results Active avoidance response (AAR) and passive avoidance response (PAR) were decreased in the 2 months ischemia group and the 4 months ischemia group The number density (Nv) of the synapses in the brain cortex and hippocampus were reduced in the 2 months ischemia group and the 4 months ischemia group The length of activity cord (L), the area of synapses disk (S), the area density (Sv) in the hippocampus decreased in the 2 and 4 months ischemia group, and those in the brain cortex did not change in the 2 groups Conclusion The decrease of the number density (Nv) and the length of activity cord (L) of synapses in the chronic cerebral hypoperfusion is related to the memory behavior changes

Laminin(LN) and hyaluronie acid (HA) are extracellular matrix in liver. The effects of LN and HA on human fetal liver cells proliferation and collagen synthesis were observed and serum levels of LN and HA were assayed m patients with liver diseases by an enzyme immunoassay method. Both LN and HA had a significant effect on the inhibition of cell proliferation and collagen production. However, serum levels of LN and HA were significantly increased in liver cirrhosis comparing with healthy controls and with patients with non-liver diseases. The results suggest that LN and HA may play a role in the feed-back inhibition mechanism in liver fibrogencsis, and assay of LN and HA in serum may be useful to the diagnosis of liver fibrosis.

Objective To study the effect of Honokiol(HKL)on pulmonary microvascular endothelial cells in lipopolysaccharide(LPS)-induced acute respiratory distress syndrome(ARDS)and its potential mechanism.Methods Mouse lung microvascular endothelial cells(PMVECs)were cultured with DMEM+10％FBS in a six-well plate and divided into control(Con)group 1,Honokiol(HKL)group 1,LPS treated(LPS)group 1,and LPS+HKL treatment(HKL+LPS)group 1.The levels of malondialdehyde(MDA)and reactive oxygen species(ROS)in cell lysates were determined by lipid peroxidation assay kit and H2DCF-DA,respectively.TUNEL/DAPI double staining was used to detect apoptosis.Cell junctions were visualized via VE-cadherin/DAPI and Claudin-5/DAPI double staining.Western blot was used to detect caspase-3,cleaved caspase-3,Sirt3,SOD2,and acetylated SOD2(Ac-SOD2)expression.Thirty-two mice were randomly divided into control(Con)group 2,Honokiol(HKL)group 2,LPS treated(LPS)group 2,and LPS+HKL treatment(HKL+LPS)group 2.Hematoxylin and eosin(HE)staining was used to observe pathological changes to the lung tissue.Results HKL pretreatment significantly reversed the LPS-induced increase in ROS and MDA levels(P＜0.05),SOD2 acetylation and Sirt3 down-regulation(P＜0.05).TUNEL and caspase analysis showed that HKL protected against the apoptosis of PMVECs induced by LPS.VE-cadherin fluorescence staining demonstrated that HKL pretreatment prevented LPS from disrupting cell adhesion junctions.Claudin-5 fluorescence staining showed that HKL pretreatment prevented LPS from disrupting the tight junctions between cells.In the animal experiments,HE staining showed that HKL significantly inhibited the typical pathological changes of ARDS in the lung tissue of mice in the LPS group.Conclusions HKL can significantly inhibit the LPS-induced oxidative stress,apoptosis,and cell-connection breakdown of PMVECs,thereby alleviating ARDS symptoms.

Objective To investigate the imaging features and pathogenesis of lethal iatrogenic hemobilia(LIH)and the value of transarterial intervention in the treatment of LIH.Methods A total of 269 patients with upper gastrointestinal bleeding who were admitted to The First Affiliated Hospital of Nanjing Medical University from August 2009 to July 2023 were enrolled,among whom 24 had a confirmed diagnosis of LIH and received treatment,and a retrospective analysis was performed for the clinical data of these 24 patients,including the iatrogenic causes,angiographic findings,and arterial interventions of LIH.Among the 24 patients,23 received transarterial embolization(TAE)with gelatin sponge particles and coils,and 1 received a covered stent for isolation.The main criteria for assessing treatment outcome included the technical success rate of surgery,procedure-related complications,and long-term clinical follow-up.Results Among the 24 patients with LIH,12 had LIH caused by interventional procedures,and 12 had LIH caused by hepatobiliary and pancreatic surgery.The main clinical manifestations included a significant reduction in blood pressure or a persistent reduction in hemoglobin in 13 patients and upper gastrointestinal bleeding in 18 patients.Among the 24 patients,2 developed symptoms during surgery,4 developed symptoms within 24 hours,and 18 developed symptoms after 24 hours.Angiography showed a positive bleeding rate of 100%(24/24),and imaging findings included pseudoaneurysms in 15 patients,hepatic artery truncation in 3 patients,extravasation of contrast medium in 5 patients,and hepatic arteriobiliary fistula in 3 patients.Among the 24 patients,23 received TAE and 1 received stent implantation.Successful hemostasis was achieved for 23 patients,with a technical success rate of 95.8%(23/24).Four patients developed hepatic necrosis and abscess after TAE,and there was no rebleeding or recurrence after hemostatic treatment.Conclusion Various iatrogenic injuries may result in LIH with diverse clinical and imaging findings,and integrated diagnostic imaging combined with transarterial intervention is the best effective life-saving measure for LIH.

As the incidence of male infertility has been increasing during recent years, it is urgent to reveal the pathogenesis of male infertility, as well as to develop the new drugs for treatment of male infertility, in order to solve the declining birth rate and aging problems. The construction and application of male infertile animal models is critical for drug development, which plays an important role in accurately evaluating the efficacy and mechanism of infertility treatment. A suitable infertility model not only can reduce the repeated drug efficacy evaluations, reduce animal usage and the cost of new drug development, but also has important reference value for subsequent clinical trial research. Male infertility laboratory animal models can be constructed through chemical, physical, endocrine, environmental estrogen, gene modification, and immune methods. This article mainly introduces the existing male infertility animal models available for drug development, and briefly introduces the application progress of each model to provide reference for the male infertility drug researchers.

Objective:To study clinical pathological characteristics, immunohistochemical, molecular genetical changes and prognosis in pediatric eosinophilic solid and cystic renal cell carcinoma (ESC RCC) with TSC2 gene mutations.Methods:The tissue samples were collected from two pediatric ESC RCC patients between 2017 and 2018. The tissues were subjected to histological examination and immunohistochemistry using EnVision system. The TFE3, TFEB gene rearrangements were tested using FISH and molecular genetic study. The paraffin sections were used for DNA extraction, PCR amplification and NGS sequencing.Results:The two patients with ESC RCC were both male, aged at 9 years and 8 months, and 13 years, respectively. The tumors were from the right kidney, 5 cm and 7 cm in size, respectively, with solid and cystic changes in cross section, and grey-reddish or grey-whitish fish meat appearance. Microscopic observation revealed the tumors had fibrous capsules, which were infiltrated by the tumor cells. The tumor cells were diffusely distributed, round-shaped, or polygon-shaped, and had voluminous cytoplasm, eosinophilic cytoplasm, various sizes of vacuoles and clear cell-like appearance. There were papillary structures in some areas, with visible fiber septa. The nuclei were round and vesicular, with multi-nucleated cells and megakaryocytes. The mitoses were not seen. A few cystic structures were visible in different sizes, and capsule walls were covered with a single layer of spike-like tumor cells. Thick-walled blood vessels were seen in the stroma, with focal lymphocytic infiltration, eosinophilic necrosis, calcifications and cholesterol crystals. Immunohistochemistry of the tumor cells was positive for PAX8 (diffuse), CK20 (focal), CKpan (focal), CK10 (1 focal, 1 diffuse), INI1, vimentin, CD68, and Ki-67 (5%~10%); the tumor cells were negative for HMB45, S-100, Melan A, p53, desmin, TFE3, CK7, CK19, EMA, CD56, CgA, Syn, CD30, CD117, WT1 and SMA. Molecular genetic study showed that TFE3 and TFEB gene rearrangements were not detected by FISH. NGS sequencing showed TSC2 p.Lys574Ter (0.198) was found in patient one and TSC2 p.Arg406Ter (0.355) in patient two.Conclusions:ESC RCC in children is a rare disease, and can be misdiagnosed easily. It has unique pathological characteristics, and immunohistochemical, molecular and genetic changes. The prognosis is relatively good.