Objective To investigate the effects of terahertz(THz)radiation on mouse testicular tissue and its potential molecular mechanisms.Methods A total of 125 male C57BL/6J mice(6～8 weeks old)were randomly divided into control group and low-,medium-and high-radiation power groups.The mice of the latter 3 groups were exposed to THz radiation at a frequency of 2.5 T,with an average power density of 38,115,or 318 mW/cm2,for 5 or 10 min.The detection time was immediately or 24 h after exposure.HE staining was used to observe pathological damage.ELISA was employed to detect the expression of inflammatory factors in testicular tissue.RNA-seq was utilized to detect the global changes of gene expression.The differentially expressed genes(DEGs)were screened and bioinformatics was used to cluster them.The screened genes were further analyzed with RT-qPCR to determine the time-dependent and dose-dependent relationships of the expression with THz exposure.Finally,sperm quality was evaluated morphologically using a microscope.Results Three doses of THz radiation exposure did not cause significant pathological damages to mouse testicular tissue.TNF-α expression was increased immediately after exposure at average power density of 115 mW/cm2(P＜0.01),and the expression of IL-1β and TNF-α were both increased when the dose reached 318 mW/cm2(P＜0.01).However,all the 3 factors returned to normal levels in 24 h after exposure.RNA-seq results showed that THz radiation exposure caused abnormal expression of 56 genes.Cluster analysis indicated that these DEGs were mainly enriched in immune and inflammatory responses,enzyme activity,sperm development and capacitation functions.Then for 5 selected key genes,Crisp1,Adam7,Ltf,Rnase9,and Bsph1,the expression of Crisp1 and Rnase9 was decreased immediately after exposure to 115 mW/cm2 THz radiation,the dose of 318 mW/cm2 resulted in obvious changes in the expression of the 5 genes(P＜0.05),and their expression returned to normal levels in 24 h after exposure.Morphological observation displayed that exposure to all the 3 doses of THz had no influence on sperm quality.Conclusion THz radiation exposure causes temporary inflammatory response in testicular tissue and abnormal expression of sperm functions-related genes.However,these changes return to normal 24 h after exposure,and additionally,do not impair sperm quality.

Parkinson′s disease (PD) is a neurodegenerative disorder, and the abnormal levels of its pathological marker ɑ-synuclein (ɑ-syn) are often accompanied by imbalanced heavy metal homeostasis. However, the underlying mechanisms remain unclear, with limited research. This review explores the interactions between iron, copper, zinc, and manganese with pathological ɑ-syn′s abnormal expression, aggregation, and degradation in development and progression of PD. It also discusses potential therapeutic directions for addressing heavy metal imbalances in PD patients.

Adult-onset leukoencephalopathy with axonal spheroids and pigmented glia(ALSP)is a clinically rare autosomal dominant genetic disease,and its specific pathogenesis is not yet clear.The colony-stimulating factor 1 receptor(CSF1R)is a transmembrane tyrosine kinase receptor on the cell surface and mutations in the gene encoding it have been identified as potential pathogenic factors for ALSP.However,the specific mechanisms by which CSF1R gene mutations lead to the onset of ALSP are still unclear.After reviewing the mutation sites and pathogenic mechanisms of CSF1R in the pathogenesis of ALSP,CSF1R mutations have been shown to cause microglial dysfunction through mechanisms such as dominant-negative effects,loss of function,haploinsufficiency,and gain of function,thereby leading to the onset of ALSP.A deeper understanding of the causes of ALSP will help in exploring potential treatment methods.

Objective To study the rheological properties of terbinafine hydrochloride cream,and provide a research basis for the consistency of this product.Methods The Kinexus rheometer was used to determine the dynamic and steady rheological parameters of terbinafine hydrochloride cream.Comparative studies on the rheological curves,yield stress,viscosity measurement,linear viscoelasticity and creep recovery of original and generic terbinafine hydrochloride cream were carried out.Results The original and generic terbinafine hydrochloride cream were both non-Newtonian fluid with shear thinning.The yield stress of three generic were similar to the original.The linear viscoelastic region of three generic were similar to the original,and the ranges of linear viscoelastic were both 0.01％-1％,the elastic moduli were all greater than the viscosity moduli and were viscoelastic materials.It could be seen from the creep recovery curve that the creep behavior of three generic were basically the same with the original.Conclusion Among the six terbinafine hydrochloride creams measured experimentally,the rheological properties of most generic drugs are basically the same as the original.

Objective:To establish a risk prediction model for the occurrence of low 1 min Apgar scores in extremely premature infants (EPIs).Methods:From January 2017 to December 2021, EPIs delivered at our hospital were retrospectively analyzed and randomly assigned into training set group and validation set group in a 7∶3 ratio. 17 clinical indicators were selected as predictive variables and low Apgar scores after birth as outcome variables. Lasso regression and multi-factor logistic regression were used within the training set group to select the final predictors for the final model, and the calibration, distinguishability and clinical decision making curves of the final model were evaluated in the validation set group.Results:A total of 169 EPIs were enrolled, including 117 in the training set group and 52 in the validation set group. 4 indicators including gender, fetal distress, assisted conception and delivery time were selected as the final predictors in the final model. Both the training set group and the validation set group had good calibration curves. The area under the receiver operating characteristic curve (AUC) of the prediction model was 0.731, the sensitivity was 72.2%, the specificity was 60.5% and the AUC of the external validation curve was 0.704. The clinical decision making curve showed that the model had a greater benefit in predicting the occurrence of low Apgar score in EPIs within the threshold of 2% to 75%.Conclusions:The clinical prediction model established in this study has good distinguishability, calibration and clinical accessibility and can be used as a reference tool to predict low Apgar scores in EPIs.

Objective: Sex differences have been observed in many aspects of schizophrenia, including cognitive deficits. Despite extensive research into the relationship between metabolic factors and cognitive deficits in schizophrenia, few studies have explored the potential sex difference in their association. Methods: We recruited 358 schizophrenia patients and 231 healthy controls. The participants underwent measurements of body mass index (BMI), waist circumference, blood pressure, triglycerides, high-density lipoprotein cholesterol, and fasting blood glucose. Metabolic risk factors included abdominal obesity, hypertension, hyperglycemia, and dyslipidemia. A collection of these metabolic risk factors has been defined as metabolic syndrome. These diagnoses were based on the criteria of the National Cholesterol Education Program’s Adult Treatment Panel III. Cognitive performance was measured using the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). A descriptive analysis, difference analysis, and linear regression model were used to identify the metabolic risk factors for cognitive function in schizophrenia. Results: Our findings revealed sex differences in the rate of abdominal obesity and hypertension in schizophrenic patients. Additionally, we observed sex differences in the association between metabolic risk factors and cognitive impairment in schizophrenia. Specifically, hyperglycemia was associated with the immediate memory index score of RBANS in male patients, while dyslipidemia was associated with language, attention, delayed memory index scores, and RBANS total score in female patients. Conclusion Our results suggest that sex should be considered when evaluating the impact of metabolic disorders on the cognitive function of schizophrenic patients. Moreover, our study identifies hyperglycemia and dyslipidemia as potential targets for precise treatment by sex stratification, which could benefit the improvement of cognitive impairment in schizophrenic patients.

ObjectiveTo investigate the efficacy and safety of endoscopic retrograde cholangiopancreatography （ERCP） during pregnancy and puerperium through a comparative analysis. MethodsA retrospective analysis was performed for the clinical data of 22 patients in pregnancy and 39 patients in puerperium who received ERCP in Digestive Endoscopy Center of The First Affiliated Hospital of Nanchang University from January 2007 to August 2022. The two groups of patients were compared in terms of baseline data， diagnosis during ERCP， interventions， laboratory results before and after ERCP， post-ERCP complications， and delivery and fetal outcomes. The independent-samples t test was used for comparison of continuous data between two groups， and the chi-square test or the Fisher’s exact test was used for comparison of categorical data between two groups. ResultsThere were no significant differences between the patients in pregnancy and those in puerperium in all baseline data （all P>0.05） except the rate of CT examination （22.73% vs 58.97%， χ²=7.44， P=0.006）. During the ERCP procedure， compared with the patients in puerperium， the patients in pregnancy had a significantly lower proportion of the patients who underwent biliary stone extraction or endoscopic papillary balloon dilation （χ²=4.007 and 4.315， both P<0.05） and a significantly higher proportion of the patients who did not receive X-ray fluoroscopy （χ²=12.103， P=0.001）. After ERCP， both groups had significant improvements in white blood cell count， total bilirubin， direct bilirubin， alanine aminotransferase， and aspartate aminotransferase （all P<0.05）. The overall incidence rate of post-ERCP complications was 7.04% （5/71） for all patients， with post-ERCP biliary infection as the most common complication （3/71，4.23%）， and there was no significant difference in the incidence rate of post-ERCP complications between the two groups （P>0.05）. As for delivery and fetal outcomes， compared with the patients in puerperium， the patients in pregnancy had a significantly higher proportion of patients with early termination of pregnancy （50.00% vs 0，χ²=20.528， P<0.001） and a significantly lower proportion of patients with cesarean section （36.36% vs 76.92%， χ²=4.756， P=0.029）. There were no significant differences in the incidence rates of adverse events such as abnormal fetal development and stillbirth between the two groups （P>0.05）. ConclusionWith strict control of ERCP indications and timing， ERCP is effective and relatively safe in both pregnancy and puerperium and has a comparable incidence rate of post-ERCP complications to that in the general population， with relatively good delivery and fetal outcomes.

OBJECTIVE To study the improvement effect and possible mechanism of N-butylphthalide on inflammatory injury of bone marrow mesenchymal stem cells （BMSCs） in rats. METHODS BMSCs of rats were divided into control group， model group， N-butylphthalide low-concentration， medium-concentration and high-concentration groups （10， 20， 50 μmol/L）. BMSCs were cultured in vitro and lipopolysaccharide （the final concentration of 10 mg/L） was used to establish the inflammatory injury model. After the intervention of N-butylphthalide， the survival rate， apoptotic rate， the contents of tumor necrosis factor α （TNF- α）， interleukin 1β （IL-1β） and IL-6 in cell culture medium， the mRNA expression of nuclear factor-κB（NF-κB） p65， and the protein expressions of caspase-3， B-cell lymphoma 2 （Bcl-2）， Bcl-2 related X protein （Bax） and NF-κB p65 in cells were detected. RESULTS Compared with control group， the survival rate and protein expression of Bcl-2 were decreased significantly in model group （P＜0.05）； the apoptotic rate， contents of TNF-α， IL-1β and IL-6， the mRNA expression of NF-κB p65， and the protein expressions of caspase-3， Bax and NF-κB p65 were increased significantly （P＜0.05）. Compared with model group， above indexes were significantly reversed in all concentration groups of N-butylphthalide （P＜0.05）， in concentration-dependent manner. CONCLUSIONS N-butylphthalide can ameliorate the inflammatory injury of BMSCs induced by lipopolysaccharide， and its mechanism may be related to the inhibition of NF-κB signaling pathway.

Objective:To investigate the diagnostic value of prenatal MRI in the detection of abnormal placental cord insertions (APCIs) comparing with prenatal ultrasound and pathological examination.Methods:A retrospective data collection was conducted on 440 patients who underwent both prenatal placental ultrasound and MRI at the Foshan Women and Children Hospital from December 2013 to December 2021. Among them, 37 cases were APCIs confirmed by surgery or pathology. The prenatal placental MRI findings were analyzed and compared with prenatal ultrasound diagnosis. The diagnostic efficacy of prenatal MRI and ultrasound in diagnosing APCIs was calculated.Results:Among the 37 cases of APCIs confirmed by surgery or pathology, 17 cases had marginal cord insertion (MCI), 13 cases had velamentous cord insertion (VCI), 5 cases had vasa previa (VP), and 2 cases had VCI combined with VP. The sensitivity and specificity of ultrasound diagnosis for APCIs were 59.5% (22/37) and 97.8% (394/403), respectively. The sensitivity and specificity of MRI diagnosis for APCIs were 86.5% (32/37) and 98.5% (397/403), respectively. Among the 37 cases of APCIs, prenatal MRI missed diagnosis of 2 cases of MCI, 2 cases of VCI, and misdiagnosed 1 case of VCI as an accessory placenta. MRI identified 10 cases of APCIs missed by ultrasound, including 5 cases of MCI, 2 cases of VP, 2 cases of VCI, and 1 case of combined VCI with VP. Additionally, ultrasound misdiagnosed 4 cases of APCIs, including 2 cases of VCI misdiagnosed as MCI and 2 cases of MCI misdiagnosed as VCI.Conclusions:For APCIs complicated with abnormalities of placental location or morphology, or placental accretion spectrum disease in late pregnancy, MRI has a higher diagnostic efficacy than ultrasound.

Objective:To investigate the efficacy of flexion-lateral curvature-supination reduction combined with primary anterior surgery for the treatment of lower cervical dislocation with unilateral facet inter-locking.Methods:A retrospective analysis was performed in the 32 patients who had been admitted to Department of Spine Surgery, Honghui Hospital for lower cervical dislocation with unilateral facet interlocking from November 2015 to October 2018. According to their treatments, they were divided into 2 groups. In the emergency group treated by flexion-lateral curvature-supination reduction combined with primary anterior surgery, there were 13 males and 3 females, aged from 24 to 63 years. In the traction group treated by cranial traction reduction combined with secondary anterior surgery, there were 12 males and 4 females, aged from 20 to 64 years. The operation time, intraoperative blood loss, hospital stay, bone graft fusion, American Spinal Injury Association (ASIA) grade and Japanese Orthopaedic Association (JOA) score were compared between the 2 groups.Results:There was no significant difference in the preoperative general data between the 2 groups, showing they were comparable ( P<0.05). All patients were followed up from 26 to 40 months. The hospital stay for the emergency group [(7.2±1.2) d] was significantly shorter than that for the traction group[(10.9±1.2) d] ( P<0.05). There was no significant difference in the operation time, blood loss, ASIA grade or JOA score between the 2 groups ( P>0.05). All patients achieved osseous fusion of intervertebral space. Conclusion:Compared with traditional methods, flexion-lateral curvature-supination reduction combined with primay anterior surgery shows no significant difference in the recovery of neurological function but leads to a shorter hospital stay.