Due to its high sensitivity and non-destructive nature, Raman spectroscopy has become an essential analytical tool in biopharmaceutical analysis and drug development. Despite of the computational demands, data requirements, or ethical considerations, artificial intelligence (AI) and particularly deep learning algorithms has further advanced Raman spectroscopy by enhancing data processing, feature extraction, and model optimization, which not only improves the accuracy and efficiency of Raman spectroscopy detection, but also greatly expands its range of application. AI-guided Raman spectroscopy has numerous applications in biomedicine, including characterizing drug structures, analyzing drug forms, controlling drug quality, identifying components, and studying drug-biomolecule interactions. AI-guided Raman spectroscopy has also revolutionized biomedical research and clinical diagnostics, particularly in disease early diagnosis and treatment optimization. Therefore, AI methods are crucial to advancing Raman spectroscopy in biopharmaceutical research and clinical diagnostics, offering new perspectives and tools for disease treatment and pharmaceutical process control. In summary, integrating AI and Raman spectroscopy in biomedicine has significantly improved analytical capabilities, offering innovative approaches for research and clinical applications.

Objective:To explore the clinical characteristics of cardiotoxicity due to 5-hydroxytryptamine 3 receptor (5-HT 3) antagonists. Methods:Relevant databases at home and abroad (up to June 20, 2023) were searched and case literature of cardiotoxicity induced by 5-HT 3 receptor antagonist were collected. Relevant information of patients, medication status (drug name, usage and dosage, indication, combined drugs), occurrence of cardiotoxicity, evaluation of the association between 5-HT 3 receptor antagonists and cardiotoxicity, intervention measures and outcomes were extracted and analyzed descriptively and statistically. Results:A total of 23 case reports, 22 in English and 1 in Chinese, were enrolled in the analysis. There were 26 patients, 6 males and 20 females, and the age ranged from 8 to 60 years, with an average of 40 years. The reasons for drug use were perioperative antiemesis in 19 patients, chemotherapy antiemesis in 2 patients, and other reasons in 5 patients. Ondansetron was used in 19 patients, dolasetron in 4 patients, granisetron, tropisetron and palonosetron in 1 patient each. Except for 1 patient with overdose by self-medication, the dosage in 25 patients was within the recommended range in labels. A total of 50 case time of cardiotoxicity occurred in 26 patients, mainly including tachycardia (12 cases), electrocardiogram (ECC) changes (11 cases), bradycardia (9 cases), cardiac arrest (1 case), and myocardial infarction (1 case), etc. Twenty-one patients experienced cardiotoxicity after initial medication, of which 8 occurred immediately after the initial medication, 5 patients occurred after ≥2 times of medication. After the occurrence of cardiotoxicity, 26 patients stopped 5-HT 3 receptor antagonists successively, of which 24 stopped the drug immediately and received symptomatic treatments, 1 stopped the drug after 8 days of medication without other intervention, and 1 stopped the drug and received symptomatic treatment after the symptoms aggravated. After drug withdrawal and/or symptomatic treatments, the mentioned symptoms disappeared and ECC returned to normal in 25 patients. Of them, 22 patients had a recovery time of ≤48 hours, while the other 3 patients had their ECG returned to normal at 1 week, 2 weeks, and 2 months, respectively; one patient died due to ineffective treatment for ventricular fibrillation. Conclusions:The cardiotoxicity induced by 5-HT 3 receptor antagonists mostly occurs after the initial medication, and mainly manifests as tachycardia, bradycardia, ECG changes, etc. Most patients have a good prognosis after timely drug withdrawal and symptomatic treatments, and in severe cases, it can lead to death.

Objective:To explore the clinical characteristics of cardiotoxicity due to 5-hydroxytryptamine 3 receptor (5-HT 3) antagonists. Methods:Relevant databases at home and abroad (up to June 20, 2023) were searched and case literature of cardiotoxicity induced by 5-HT 3 receptor antagonist were collected. Relevant information of patients, medication status (drug name, usage and dosage, indication, combined drugs), occurrence of cardiotoxicity, evaluation of the association between 5-HT 3 receptor antagonists and cardiotoxicity, intervention measures and outcomes were extracted and analyzed descriptively and statistically. Results:A total of 23 case reports, 22 in English and 1 in Chinese, were enrolled in the analysis. There were 26 patients, 6 males and 20 females, and the age ranged from 8 to 60 years, with an average of 40 years. The reasons for drug use were perioperative antiemesis in 19 patients, chemotherapy antiemesis in 2 patients, and other reasons in 5 patients. Ondansetron was used in 19 patients, dolasetron in 4 patients, granisetron, tropisetron and palonosetron in 1 patient each. Except for 1 patient with overdose by self-medication, the dosage in 25 patients was within the recommended range in labels. A total of 50 case time of cardiotoxicity occurred in 26 patients, mainly including tachycardia (12 cases), electrocardiogram (ECC) changes (11 cases), bradycardia (9 cases), cardiac arrest (1 case), and myocardial infarction (1 case), etc. Twenty-one patients experienced cardiotoxicity after initial medication, of which 8 occurred immediately after the initial medication, 5 patients occurred after ≥2 times of medication. After the occurrence of cardiotoxicity, 26 patients stopped 5-HT 3 receptor antagonists successively, of which 24 stopped the drug immediately and received symptomatic treatments, 1 stopped the drug after 8 days of medication without other intervention, and 1 stopped the drug and received symptomatic treatment after the symptoms aggravated. After drug withdrawal and/or symptomatic treatments, the mentioned symptoms disappeared and ECC returned to normal in 25 patients. Of them, 22 patients had a recovery time of ≤48 hours, while the other 3 patients had their ECG returned to normal at 1 week, 2 weeks, and 2 months, respectively; one patient died due to ineffective treatment for ventricular fibrillation. Conclusions:The cardiotoxicity induced by 5-HT 3 receptor antagonists mostly occurs after the initial medication, and mainly manifests as tachycardia, bradycardia, ECG changes, etc. Most patients have a good prognosis after timely drug withdrawal and symptomatic treatments, and in severe cases, it can lead to death.

New threats posed by the emerging circulating variants of SARS-CoV-2 highlight the need to find conserved neutralizing epitopes for therapeutic antibodies and efficient vaccine design. Here, we identified a receptor-binding domain (RBD)-binding antibody, XG014, which potently neutralizes β-coronavirus lineage B (β-CoV-B), including SARS-CoV-2, its circulating variants, SARS-CoV and bat SARSr-CoV WIV1. Interestingly, antibody family members competing with XG014 binding show reduced levels of cross-reactivity and induce antibody-dependent SARS-CoV-2 spike (S) protein-mediated cell-cell fusion, suggesting a unique mode of recognition by XG014. Structural analyses reveal that XG014 recognizes a conserved epitope outside the ACE2 binding site and completely locks RBD in the non-functional "down" conformation, while its family member XG005 directly competes with ACE2 binding and position the RBD "up". Single administration of XG014 is effective in protection against and therapy of SARS-CoV-2 infection in vivo. Our findings suggest the potential to develop XG014 as pan-β-CoV-B therapeutics and the importance of the XG014 conserved antigenic epitope for designing broadly protective vaccines against β-CoV-B and newly emerging SARS-CoV-2 variants of concern.
Angiotensin-Converting Enzyme 2 ; Antibodies, Neutralizing ; Antibodies, Viral ; COVID-19 ; Epitopes ; Humans ; SARS-CoV-2/genetics* ; Spike Glycoprotein, Coronavirus/genetics*

Objective: To observe the efficacy of laparoscopic high ligation of spermatic vein combined with compound xuanju capsule in treating infertility caused by varicocele. Methods: Retrospective analysis of 49 cases of infertility caused by varicocele admitted to the Affiliated Hospital Xuzhou Medical University from February 2015 to November 2016, average age was 27.5 years, aged 20-50 years; according to simple random method divided into experimental group (n=20) and control group (n=29). Patients in the experimental group were treated with laparoscopic high ligation of spermatic vein and compound xuanju capsule. Patients in the control group were treated with high ligation of spermatic vein. Semen quality (sperm concentration, forward motor sperm rate, sperm survival rate), peripheral blood sex hormone (follicle stimulating hormone, luteinizing hormone testosterone) were compared between the two groups before and 3 months after surgery. Pregnancy rate of the spouse 1 year after surgery were compared between the two groups. Measurement data were expressed as mean± standard deviation (Mean±SD), and t-test was used for comparison between groups; count data were compared by Chi-square test. Results: Preoperative sperm concentration [(14.95±2.35) million/ml vs (15.69±3.35) million/ml, P=0.118], forward motor sperm rate [(24.35±3.72)% vs (25.10±3.89)%, P=0.221], sperm survival rate [(27.90±2.59)% vs (26.93±3.20)%, P=0.122]was not statistically significant between experimental group and control group. 3 months after operation, sperm concentration [(23.45±4.39) million/ml vs (20.07±2.91) million/ml, P=0.001], forward motor sperm rate [(34.80±3.56)% vs (31.62±3.75)%, P=0.001], sperm survival rate [(44.55±4.29)% vs (39.52±4.49)%, P=0.001] was statistically significant between experimental group and control group. Preoperative follicle stimulating hormone [(8.97±0.64) IU/L vs (9.17±0.96) IU/L, P=0.238] and luteinizing hormone [(6.75±0.49) IU/L vs (6.64±0.37) IU/L, P=0.744], testosterone [(10.87±1.66) nmol/L vs (9.98±1.17) nmol/L, P=0.064] was not statistical significance between experimental group and control group. 3 months after operation, Follicle stimulation. [(6.96±0.66) IU/L vs (7.34±0.77) IU/L, P=0.043], luteinizing hormone [(6.04±0.39) IU/L vs (6.15±0.38) IU/L, P=0.038], testosterone [(14.46±1.30) nmol/L vs (12.23±2.23) nmol/L, P=0.001] was statistically significant between experimental group and control group. Pregnancy rate of the spouse 1 year of the experimental group was higher than the control group [65.0% (13/20) vs 48.3% (14/29)], but it was not statistically significant between two groups (χ²=1.34, P=0.247). Conclusions Laparoscopic high ligation of spermatic vein combined with compound Xuanju capsule in the treatment of infertility caused by varicocele can significantly improve semen quality and sex hormone levels. From visual data, the natural pregnancy rate is also improved compared with the simple operation group. It is worthy of clinical recommendation.

Objective To investigate the MRI findings of duodenal papillary adenocarcinoma(DPA),and to evaluate the importance of diffusion-weighted imaging(DWI)in diagnosis of DPA.Methods A complete data of 52 patients with DPA were prospectively collected.All patients underwent surgery within 72 hours after conventional MRI,DWI and MRCP scans.Before surgery,four different MRI findings were used to calculate the sensitivity,specificity and the probability of correctness.Two experienced radiologists who were blind to the pathologic diagnosis handled the MRI findings.Thirty eight patients were pathologically diagnosed for DPA.Based on the pathological diagnosis,the detection rate of DPA by the MR sequence was recorded and the chi square test was used to do the statistical analysis. Results The accuracy rate in diagnosis of DPA with MRI was 78.8% in our study.The findings of DPA consist of thickening wall of duodenal,duodenal papilla node imaging,DWI showing high signal of duodenal papilla and"beak"sign of dilated bile duct.Corresponding sensitivities were 70.5%,66.7%,86.3% and 87.9%,and specificities were 75.0%,30.0%,50.0% and 63.1% respectively.The incidences of positive on T2WI and T1WI,MRCP,DWI scans were 60.5%,76.3% and 92.1% respectively.The detection rate of each sequence has significant difference(χ2=10.48,P<0.005).Conclusion The MRI manifestations of DPA consist of thickening wall of duodenal,duodenal papilla node imaging,DWI showing high signal of duodenal papilla and"beak"sign of dilated bile duct.The detection rate of DWI sepuence on DPA lesions is significantly higher than that of other sequences.

OBJECTIVE:To study the effects of flow components C6 and C7 in n-butyl alcohol extract from the leaves of Ces-trum Nocturnum(CN)on the proliferation and apoptosis of human gastric cancer cell SGC7901. METHODS:C6 and C7 were ob-tained by using different ratio of chloroform and methanol(1:9,1:7)to the gradient elution of CN leaves. After cultured with 0 (blank control),5,10,20,40,80 μg/ml C6 and C7 for 72 h,inhibitory effect of C6 and C7 on the proliferation of SGC7901 was determined by MTT assay. Inhibitory rate and IC50 were calculated. After SGC7901 were cultured with 10 μg/ml C6 and C7 for 72 h,colony formation assay was utilized to detect the effects of C6 and C7 on the cell colony formation,and the rate of colony for-mation was calculated. In addition,Wright/Giemsa and Hoechst33258/PI staining assay were used to observe the change of cytomor-phology. RESULTS:MTT showed that C6 and C7 had inhibitory effect on the proliferation of SGC7901 to different extent;inhibi-tory rates were 22.1%-80.0% and 19.6%-79.7%,and IC50 were 16.4,18.05 μg/ml,respectively. Compared with blank control group,colony formation rate of C6 and C7 group decreased,with statistical significance(P<0.05). The number of apoptotic cells was more in treatment group than in other groups. CONCLUSIONS:Flow components C6 and C7 in n-butyl alcohol extract from the leaves of CN can inhibit the proliferation of SGC7901 cells and induce the apoptosis of them.

Objective To improve the accuracy of diagnosis of the greater omentum blunt trauma(GOBT)by analyzing the MSCT findings and pathological features.Methods The MSCT appearances of 5 1 cases of GOBT with operation and (or)pathological con-firmed were analyzed retrospectively.All patients were underwent MSCT plain scan in whole abdomen.Two experienced radiolo-gists blinded to the clinical diagnosis,reached a diagnosis from the MSCT findings by two ways of plain and plain joint post-process-ing MSCT images.The detection rates of GOBT were compared by two-related-samples Fisher exact probability chi-square test.Re-sults Fifty-one cases of GOBT were distributed over the intestine,in the superior abdominal cavity,the left and the right abdominal cavity,those cases were 27,18,3 and 3 respectively.The MSCT findings of GOBT mainly consist of greater omentum(GO)streak-ing,GO hematoma and fluid around GO.Those detectable rates were 80.3%,68.6%and 90.2 % respectively.The accuracy in di-agnosis of GOBT with MSCT was 94.1%(48/51)in our study.The detection rate of GOBT by two ways was significant (P=0.04).The detection rate of GOBT was increased obviously by the way of plain joint post-processing MSCT images.Conclusion MSCT manifestations of GOBT has some characteristics.A more accurate diagnosis of GOBT could be made according to the MSCT findings by plain joint post-processing MSCT images.

Objective To comparative the expression of suppressors of cytokine signaling 3 (SOCS3) in placental tissues between premature delivery and term delivery,and to evaluate the significance of SOCS3 in premature-delivered placental tissues.Meth ods Retrospective analysis was made on 30 patients who had spontaneous premature delivery and 30 pregnant women with normal delivery from February 2013 to October 2013 in our hospital.Reverse transcription and polymerase chain reaction (RT-PCR) was used to detect the mRNA expressions of SOCS3,interferon-α(IFN-α),and interleukin-10 (IL-10).Western-blot was used to detect protein expression of SOCS3,and to analyze the balance of Th1/Th2.Results PCR detection showed that SOCS3-mRNA in the control group was significantly lower than that in the experimental group (P ＜ 0.01).Western-blot test showed that SOCS3 protein expression in the control group was significantly lower than that in the experimental group (P ＜ 0.01).The expression of SOCS3 gene was consistent with its protein expression.PCR detected the significant increase of IFN-α with the secretion of Th1 cytokine,significant decrease of IL-10 with secretion of Th2 cytokine (P ＜ 0.05),and the balance deviation of Th1/Th2 toward Th1.Conclusions SOCS3 is associated with premature delivery,which mechanism might be involved in regulation of the immune balance through janus kinase/signal transducer and activator of transcription (JAK/STAT) signaling pathways.

Extensive attention was paid on how to ensure the cultivation quality for postgraduates with professional degree under the background of the enrollment expansion.The problems in the cultivation of postgraduates with professional degree including declined quality among enrolled students,inefficient training program,unsound management system and little clinical operation chance were analyzed combined with the practice and explore in the clinical competence training for postgraduates with professional degree in Guangxi university of Traditional Chinese Medicine.Some countermeasures were put forward in improving clinical competence for postgraduates with professional degree,for instance the improvement of the management system,tutor team,quality supervision system,clinical skill training and the construction of training bases.