Objective:To evaluate the diagnostic value of non-targeted detection of metabolic fingerprinting in pulmonary nodules and to analyze the clinical effective model of multi-omics for assessing the malignant risk of pulmonary nodules.Methods:A total of 73 patients who underwent chest CT and completed pathological diagnosis and non-targeted detection of metabolic fingerprinting at Shandong Provincial Hospital Affiliated to Shandong First Medical University from November 2021 to October 2024 were selected as the research subjects. According to the postoperative histopathological diagnosis, the patients were divided into the lung malignant nodule group (61 cases) and the lung benign nodule group (12 cases). General clinical data of the patients, including sex, age, smoking history, and family history of tumors, as well as imaging data, including nodule density, nodule size, nodule location, nodule number, and special imaging manifestations (spiculation, lobulation, vacuole sign, vascular convergence sign, etc.), and non-targeted detection of metabolic fingerprinting results were collected. The above data were compared between the two groups of patients, and the receiver operator characteristic (ROC) curve was drawn to evaluate the predictive value of each model. Results:There were statistically significant differences in age ( t=4.41, P<0.001), nodule size ( Z=2.67, P=0.008), nodule density ( χ2=4.64, P=0.031), and spiculation ( χ2=7.67, P=0.006) between the lung malignant nodule group and the lung benign nodule group. There were no statistically significant differences in sex, smoking history, family history of lung cancer, nodule number, nodule location, lobulation, vacuole sign, vascular convergence sign, pleural indentation sign, calcification sign, bronchial truncation sign, vascular supply sign, and bronchial air sign (all P>0.05). The number of non-targeted detection of metabolic fingerprinting high-risk patients in the lung malignant nodule group (36 cases) was significantly higher than that in the lung benign nodule group (0 case) ( χ2=13.97, P<0.001). ROC curve analysis showed that the area under the curve of the Brock model combined with non-targeted detection of metabolic fingerprinting was 0.930 (95% CI: 0.872-0.988), which was greater than that of the Brock model (0.856, 95% CI: 0.769-0.942, Z=0.27, P=0.040) and non-targeted detection of metabolic fingerprinting (0.768, 95% CI: 0.650-0.887, Z=0.30, P=0.004) alone. Conclusions:Non-targeted detection of metabolic fingerprinting risk assessment may serve as a non-invasive method to assist the Brock model in the diagnosis of pulmonary nodules and has good application value. The combination of the Brock model and non-targeted detection of metabolic fingerprinting can more accurately distinguish the benign and malignant nature of pulmonary nodules.

Objective To investigate the effect of smoking on the semen quality in infertile men.Methods A total of 360 male infertility patients were enrolled and divided into the smoking group(n=190)and non-smoking group(n=170)based on whether they smoked or not.Furthermore,the smoking group was subdivided into group A(≤10 sticks/d,n=63),group B(11～20 sticks/d,n=80),and group C(>20 sticks/d group,n=47)according to the amount of smoking.Semen volume,liquefaction time,sperm concentration,motility,DNA fragmentation rate and normal morphological rate were observed and compared between and within the groups.Results There were significant differences in semen volume,liquefaction time,sperm motility,normal morphological rate and DNA fragmentation rate between the smoking group and the non-smoking group(P<0.05).The semen volume,sperm motility and normal morphological rate of the smoking group were lower than those in the non-smoking group,and the DNA fragmentation rate and semen liquefaction time were higher than those in the non-smoking group.And with the increase of smoking volume,sperm motility and normal morphological rate decreased,semen liquefaction time and DNA fragmentation rate increased,and there was no significant difference in the sperm concentration between the smoking group and non-smoking group(P>0.05).There was no significant difference in the semen volume between the three groups with different smoking amounts(P>0.05).Conclusion Smoking has a negative impact on the sperm quality parameters such as semen volume,sperm motility,normal morphological rate,sperm motility,liquefaction time and DNA fragmentation,and the effect of heavy smoking is particularly obvious.We should strengthen the comprehensive health education,promote the healthy lifestyles and reduce smoking.

Psychotherapy is one of the widely used therapies for depression.Yet there are currently no definitive biological markers as indicators of effectiveness.Using functional magnetic resonance imaging(fMRI)to assess the neuroimaging biomarkers before and after different psychological treatments for depression reveals corresponding changes in brain region activation and functional connectivity.For example,after cognitive-behavioral therapy,the prefrontal cortex of patients may be activated and dynamic functional connectivity variability may change,while mindfulness therapy may show alterations in specific temporal lobe regions.Additionally,studies exploring special populations and internet-based psychological intervention have also found changes in brain region activation and functional connectivity,providing guidance for the efficacy evaluation of corresponding psychotherapies.This article reviews the characteristic brain region or network changes in fMRI activity after different psychotherapies in depressed patients,aiming to discuss future directions for research that integrates neuroimaging with psychological treatment for depression.

Objective To study the protective effect and related mechanism of pterostilbene(PTE)on renal ischemia-reperfusion injury(IRI)in mice.Methods Twenty-four C57 mice were randomly divided into 4 groups(n=6),including the sham operation group(S group),the renal ischemia reperfusion group(IR group),the renal ischemia reperfusion+5 mg/kg PTE group(IR+PTE1 group)and the renal ischemia reper-fusion+10 mg/kg PTE group(IR+PTE2 group).Hematoxylin-eosin(HE)and TUNEL staining were used to evaluate renal tissue injury.Creatinine(Cr),blood urea nitrogen(BUN),malondialdehyde(MDA)in renal tissue,inflammatory cytokines tumor necrosis factor(TNF-α),interleukin(IL)-1β and IL-6 levels in serum were detected with relevant kits.The expression of Bcl-2 interacting protein 3(BNIP3)and microtubule-asso-ciated protein light chain(LC)-3 Ⅱ in kidney tissue was detected by Western blot.Results Compared with the S group,serum levels of Cr,BUN,MDA,TNF-α,IL-1β and IL-6 in the IR group were increased,renal tu-bule injury score and apoptosis index were increased,and expressions of BNIP3 and LC-3 Ⅱ were down-regula-ted,with statistical significance(P＜0.05).Compared with the IR group,serum levels of Cr,BUN,MDA,TNF-α,IL-1β and IL-6 in the IR+PTE1 group were decreased,renal tubule injury score and apoptosis index were decreased,and expressions of BNIP3 and LC-3 Ⅱ were up-regulated,with statistical significance(P＜0.05).Compared with the IR+PTE1 group,serum levels of Cr,BUN,MDA,TNF-α,IL-1β and IL-6 in the IR+PTE2 group were decreased,renal tubule injury score and apoptosis index were decreased,and expres-sions of BNIP3 and LC-3 Ⅱ were up-regulated,with statistical significance(P＜0.05).Conclusion PTE has protective effect on renal IRI in mice.

Objective:To investigate the occurrence and risk factors of intravenous polymyxin B-associated acute kidney injury (AKI) in patients with severe infection.Methods:Electronic medical records of patients with severe infection treated with intravenous polymyxin B during hospitalization in the First Affiliated Hospital, Sun Yat-sen University from October 2017 to October 2020 were collected and analyzed retrospectively. Patients with polymyxin B-induced acute kidney injury were screened out. The occurrence time, clinical stage, and outcome of AKI were statistically analyzed, and the incidence of polymyxin B-induced AKI and the cumulative incidence of AKI on the 3rd, 6th, 12th, and 15th days of administration were calculated. Patients were divided into AKI and non-AKI groups according to whether polymyxin B-associated AKI occurred. The clinical characteristics in patients of the 2 groups were compared. The risk factors of AKI were analyzed by multivariate logistic regression, and the odds ratio ( OR) and 95% confidence interval ( CI) were calculated. Results:A total of 311 patients were entered in the analysis, including 237 males (76.2%) and 74 (23.8%) females, with a median age of 58 (46, 70) years. Fifty-two patients (16.7%) developed polymyxin B-associated AKI, and the time from medication to onset of AKI was (4±2) days, ranging from 2 to 13 days. The cumulative incidence (%) of AKI and its 95 %CI on the 3rd, 6th, 12th, and 15th days of polymyxin B administration were 9.1(3.0-19.4), 15.4(7.9-25.2), 21.5(12.8-31.6), and 21.5(12.8-31.6), respectively. After developing AKI, polymyxin B was discontinued in 17 of 52 patients (32.7%), and 7 of them were given continuous renal replacement therapy (CRRT). The other 35 patients (53.8%) needed to continue medication because of the infection condition, and 25 of them were given CRRT and 10 received diuretics additionally. After the above treatments, 22 (42.3%) of 52 patients had Scr returning to normal, 6 patients (11.5%) were improved, 15 (28.9%) died due to primary diseases, and 9 (17.3%) were discharged under their own request. Multivariate logistic regression analysis showed that daily dose ≥150.0 mg ( OR=5.588, 95 %CI: 2.258-13.833, P<0.001) and high acute physiology and chronic health evaluation Ⅱ (APACHE-Ⅱ) score ( OR=1.063, 95 %CI: 1.021-1.106, P=0.003) were independent risk factors for polymyxin B-associated AKI. Conclusions:AKI may occur in a short time in patients with severe infection after intravenous administration of polymyxin B. The daily dose of polymyxin B ≥150.0 mg and high APACHE-Ⅱscore may increase the risk of AKI.

Objective:To investigate the occurrence and risk factors of intravenous polymyxin B-associated acute kidney injury (AKI) in patients with severe infection.Methods:Electronic medical records of patients with severe infection treated with intravenous polymyxin B during hospitalization in the First Affiliated Hospital, Sun Yat-sen University from October 2017 to October 2020 were collected and analyzed retrospectively. Patients with polymyxin B-induced acute kidney injury were screened out. The occurrence time, clinical stage, and outcome of AKI were statistically analyzed, and the incidence of polymyxin B-induced AKI and the cumulative incidence of AKI on the 3rd, 6th, 12th, and 15th days of administration were calculated. Patients were divided into AKI and non-AKI groups according to whether polymyxin B-associated AKI occurred. The clinical characteristics in patients of the 2 groups were compared. The risk factors of AKI were analyzed by multivariate logistic regression, and the odds ratio ( OR) and 95% confidence interval ( CI) were calculated. Results:A total of 311 patients were entered in the analysis, including 237 males (76.2%) and 74 (23.8%) females, with a median age of 58 (46, 70) years. Fifty-two patients (16.7%) developed polymyxin B-associated AKI, and the time from medication to onset of AKI was (4±2) days, ranging from 2 to 13 days. The cumulative incidence (%) of AKI and its 95 %CI on the 3rd, 6th, 12th, and 15th days of polymyxin B administration were 9.1(3.0-19.4), 15.4(7.9-25.2), 21.5(12.8-31.6), and 21.5(12.8-31.6), respectively. After developing AKI, polymyxin B was discontinued in 17 of 52 patients (32.7%), and 7 of them were given continuous renal replacement therapy (CRRT). The other 35 patients (53.8%) needed to continue medication because of the infection condition, and 25 of them were given CRRT and 10 received diuretics additionally. After the above treatments, 22 (42.3%) of 52 patients had Scr returning to normal, 6 patients (11.5%) were improved, 15 (28.9%) died due to primary diseases, and 9 (17.3%) were discharged under their own request. Multivariate logistic regression analysis showed that daily dose ≥150.0 mg ( OR=5.588, 95 %CI: 2.258-13.833, P<0.001) and high acute physiology and chronic health evaluation Ⅱ (APACHE-Ⅱ) score ( OR=1.063, 95 %CI: 1.021-1.106, P=0.003) were independent risk factors for polymyxin B-associated AKI. Conclusions:AKI may occur in a short time in patients with severe infection after intravenous administration of polymyxin B. The daily dose of polymyxin B ≥150.0 mg and high APACHE-Ⅱscore may increase the risk of AKI.

Objective: To learn the effects of Dendrobium officinale flowers on testivular tissue morphology and sperm quality in parent and offspring rats,so as to provide reference for safety evaluation of Dendrobium officinale flowers. Methods: The 40 SD rats was randomly divided into the low-,middle-,high-dose and the control group,given 2.0,4.0,6.4 and 0 g/kgbw Dendrobium officinale flowers,respectively. After three months,the body weight,mass and organ/body coefficients of testis and epididymis of parent （P） and offspring （F1,F2） rats were measured;the number,activity and deformity of sperms were observed under microscope;the changes of testis and epididymis were observed by hematoxylin eosin staining. Results: There were no significantly statistical differences in the body weight,mass and organ/body coefficients of testis and epididymis,sperm quantity,sperm motility rate among four groups of P、F1、F2 male rats （P>0.05）. There were no significantly statistical differences in sperm malformation rate between the high-dose group and the control group （P>0.05）. There was no significant change in testis and epididymis of P,F1 and F2 male rats. Conclusion Dendrobium officinale flowers did not show obviously adverse effects on testivular tissue morphology and sperm quality in parent and offsping rats.

Overactive bladder is a syndrome characterized by urgent urination, often accompanied by frequent urination and nocturia. The incidence of the disease is high all over the world, and it has a great impact on the lives of patients, which has been paid more and more attention by scholars at home and abroad. It is currently estimated that 50 million to 100 million people worldwide suffer from the disease. Mirabegron is an agonist of human β-3 adrenergic receptor used to treat symptoms of overactive bladder. In this study, the synthesis process of mirabegron was improved based on literatures. Using p-nitrophenethylamine hydrochloride, R-(-)-mandelicacid and 2-aminothiazole-4-acetic acid as starting materials, the target product with high purity was obtained through four steps of amide condensation, carbonyl reduction, nitro reduction and amide condensation, and one-step purification, with a total yield of 39%. In this study, the hydrogen source of nitro reduction in step 3 was changed from hydrogen to ammonium formate, which increased the feasibility of industrialization, and mirabegron was refined to improve the purity of the product. The improved process has the advantages of simplified operation and mild reaction conditions, which provides a new method for the preparation and purification of mirabegron.

Objective: To learn the toxicity of Dendrobium officinale flowers to pregnant rats ( P, F1 ) and offspring rats ( F1, F2 ) before birth, so as to provide toxicological evidence for the safety assessment. Methods : The rats were divided into four groups with 20 female rats and 10 male each. The rats in three dose groups were fed with Dendrobium officinale flowers at the dose of 2.0, 4.0, 6.4g/kgbw. After two generation, the F1a and F2a rats were fed with basal diet; F1b and F2b rats were fed with Dendrobium officinale flowers. The body weights and total weight gains during the gestation, the conception rates, the pregnancy rates, the birth weights and survival rates of offspring rats were examined. Results: There were no statistically significant differences in the body weights and total weight gains during the gestation, the conception rates, and the pregnancy rates in pregnant rats ( P, F1 ) among the four groups ( P>0.05 ). There were also no statistically significant differences in the survival rates and live birth rates in offspring rats (F1, F2) between the dose groups and the control group ( P>0.05 ). Conclusions Dendrobium officinale flowers did not show obviously adverse effects on pregnant rats ( P, F1 ) and offspring rats ( F1, F2 ) before birth.

Objective:To evaluate the role of autophagy in ischemia postconditioning (IPO)-induced attenuation of intestinal ischemia-reperfusion (I/R) injury in mice.Methods:Thirty-two SPF healthy adult male C57BL/6J mice, aged 9-12 weeks, weighing 25-29 g, were divided into 4 groups ( n=8 each) using a random number table method: sham operation group (group S), intestinal I/R group (group IIR), group IPO and IPO plus 3-methyladenine (3-MA) group (group IPO+ 3-MA). The model of intestinal I/R was established by occlusion of superior mesenteric artery for 45 min followed by 2-h reperfusion in anesthetized animals.The mice underwent 3 cycles of 30-s reperfusion followed by 30-s ischemia before restoration of reperfusion in group IPO.Blood samples from the femoral artery were collected at 2 h of reperfusion for determination of concentrations of serum diamine oxidase (DAO), D-lactate (D-LA) and intestinal fatty acid binding protein (I-FABP). The animals were then sacrificed and intestinal tissues were removed for microscopic examination of the pathologic changes which were scored according to Chiu and for determination of the expression of autophagy-related proteins Beclin-1 and p62 (by Western blot). The water content of intestinal tissues was calculated. Results:Compared with group S, the Chiu′s score, concentrations of serum DAO, D-LA and I-FABP, water content of intestinal tissues, and LC3Ⅱ/LC3Ⅰ ratio were significantly increased, Beclin-1 expression was up-regulated, and p62 expression was down-regulated in IIR, IPO and IPO+ 3-MA groups ( P<0.05). Compared with group IIR, the Chiu′s score, concentrations of serum DAO, D-LA and I-FABP, water content of intestinal tissues, and LC3Ⅱ/LC3Ⅰ ratio were significantly decreased, Beclin-1 expression was up-regulated, and p62 expression was down-regulated in group IPO ( P<0.05). Compared with group IPO, the Chiu′s score, concentrations of serum DAO, D-LA and I-FABP, and water content of intestinal tissues were significantly increased, LC3Ⅱ/LC3Ⅰratio was decreased, Beclin-1 expression was down-regulated, and p62 expression was up-regulated in group IPO+ 3-MA ( P<0.05). Conclusion:Autophagy is involved in ischemia postconditioning-induced attenuation of intestinal I/R injury in mice.