Objective To explore the wearing status and actual noise reduction effect of hearing protectors among noise workers in a typical automobile manufacturing enterprise. Methods In April 2024, an occupational hazard factor testing was carried out in an automobile manufacturing industry, and at the same time, the hearing protection fit test was conducted for noise workers. Intervention and guidance were provided to those who did not pass the minimum standard of baseline PAR. The difference in PAR between baseline and post-intervention was compared, and the effectiveness of hearing protector wearing method training was evaluated. Results The exceeding rate of the company's noise operation post was 50.77% (66/130). The baseline PAR of the subjects with working experience of less than 15 years and wearing hearing protectors throughout noisy work was higher, and the differences were statistically significant (P<0.05). Compared with those with 80dB≤L_{EX, 8h}<85dB, more research subjects with L_{EX, 8h}≥85dB failed baseline PAR (39.13%). After intervention, the PAR of the subjects who did not pass the minimum standard of baseline PRA increased from 2.0 (0.0, 5.3) to 17.0 (14.8, 20.0), and the protection level was significantly improved, and the difference was statistically significant (P<0.01). Conclusion The individual fit test of hearing protector is an important means to evaluate the actual noise reduction level of hearing protector and guide the selection of hearing protection models. Corporate training can help improve the PAR of hearing protectors.

Objective To analyze the increase in hearing thresholds in different frequency bands of workers exposed to different characteristic noises and the influencing factors of binaural high-frequency hearing loss, and to provide theoretical support for occupational health monitoring in enterprises. Methods In 2021, noise-exposed workers were selected from typical noise-exposing enterprises as research subjects, and their occupational health examination data were tracked for three consecutive years. According to the on-site detection from 2021 to 2023, the cumulative noise exposure (CNE) was calculated. The chi-square test was used to compare the increase of the hearing threshold of workers exposed to different characteristic noises in different frequency bands. A generalized estimation equation was constructed to explore the influencing factors of high-frequency hearing loss in the research subjects. Results The age of the study subjects was 23-54 years old, with 1.6-20.1 years of working experience, mainly distributed in manufacturing workshops, technical workshops and public works workshops. The median LAeq,8h was 85.90 (84.5, 86.1) dB(A), and the average CNE was 94.3±2.6 dB(A). The number of people with increased hearing thresholds in each frequency band was 0.5kHz>6kHz>4kHz>3kHz>1kHz>2kHz. There were statistically significant differences in the increase of hearing thresholds in each frequency band, binaural speech frequency impairment, and high-frequency hearing loss among subjects with different characteristics (P<0.05). The detection rate of binaural speech frequency hearing loss was the highest in subjects aged>45 years, with a length of service of>15 years, and with a CNE>96dB(A). The detection rate of binaural high-frequency hearing loss was the highest in subjects aged 35-40 years, with a length of service of 5-10 years, and with a CNE>96dB(A).In addition, the detection rate of binaural speech frequency and high-frequency hearing loss increased with the increase of CNE(P<0.05). The GEE model showed that age>40 years and CNE>96dB(A) were risk factors for high-frequency hearing loss in both ears. Conclusion With increasing age and CNE, hearing thresholds rise across all frequency bands, elevating the risk of binaural speech-frequency and high-frequency hearing loss, thereby increasing the likelihood of occupational noise-induced deafness.

Paclitaxel， a highly effective natural antitumor drug， has been demonstrated to be efficacious in the treatment of a variety of cancers， including breast cancer， ovarian cancer， and lung cancer. The traditional paclitaxel injections have been observed to present certain issues， including overt adverse reactions and a decline in the quality of life of patients following treatment. This ultimately leads to an inability to meet the comprehensive needs of patients， thereby limiting the clinical applications of the drugs. Compared with injectable administration， the oral administration can avoid the risk of infection present in the invasive route， is conducive to improving patient compliance and quality of life， and reduces healthcare costs， and has a good application prospect. However， paclitaxel has low solubility， poor permeability， and is susceptible to the exocytosis of P-glycoprotein， which presents a significant challenge in the development of its oral preparations. Novel drug delivery technologies can enhance the solubility of paclitaxel and facilitate its controlled release， which is beneficial for the oral absorption and efficacy. The paper reviews the development history of oral preparations of paclitaxel， and summarizes the delivery technologies such as polymer micelles， nanoparticles， nanoemulsions and nanocrystals， and discusses the application mechanisms， advantages and limitations of these technologies and their adaptability in different cancer treatments. Finally， the challenges faced in the development of oral preparations of paclitaxel are summarized， and future research directions are proposed in order to provide new ideas for the development of oral delivery of paclitaxel.

Paclitaxel， a highly effective natural antitumor drug， has been demonstrated to be efficacious in the treatment of a variety of cancers， including breast cancer， ovarian cancer， and lung cancer. The traditional paclitaxel injections have been observed to present certain issues， including overt adverse reactions and a decline in the quality of life of patients following treatment. This ultimately leads to an inability to meet the comprehensive needs of patients， thereby limiting the clinical applications of the drugs. Compared with injectable administration， the oral administration can avoid the risk of infection present in the invasive route， is conducive to improving patient compliance and quality of life， and reduces healthcare costs， and has a good application prospect. However， paclitaxel has low solubility， poor permeability， and is susceptible to the exocytosis of P-glycoprotein， which presents a significant challenge in the development of its oral preparations. Novel drug delivery technologies can enhance the solubility of paclitaxel and facilitate its controlled release， which is beneficial for the oral absorption and efficacy. The paper reviews the development history of oral preparations of paclitaxel， and summarizes the delivery technologies such as polymer micelles， nanoparticles， nanoemulsions and nanocrystals， and discusses the application mechanisms， advantages and limitations of these technologies and their adaptability in different cancer treatments. Finally， the challenges faced in the development of oral preparations of paclitaxel are summarized， and future research directions are proposed in order to provide new ideas for the development of oral delivery of paclitaxel.

Objective:To analyze the effects of citric acid anticoagulation on coagulation function and inflammatory factors in patients with sepsis and high-risk bleeding treated with continuous renal replacement therapy (CRRT).Methods:A total of 80 patients with sepsis with high-risk bleeding who received CRRT treatment in the Affiliated Hospital of Jining Medical University from February 2018 to August 2023 were retrospectively selected as the study objects, 40 cases were treated with low molecular weight heparin (control group) and 40 cases were treated with citric acid (observation group).Both groups were treated continuously, and the anticoagulant effect, coagulation function, electrolyte and inflammatory factor levels of the two groups were compared 7 d after medication.Results:The total effective rate of anticoagulation in the observation group after treatment was higher than that in the control group: 97.50% (39/40) vs. 75.00% (30/40), there was statistical difference ( χ2 = 8.54, P<0.05). After treatment, the levels of activated partial thrombin time (APTT), thrombin time (TT) and prothrombin time (PT) in the observation group were lower than those in the control group: (31.08 ± 8.31) s vs. (41.76 ± 8.36) s, (23.41 ± 5.02) s vs. (29.05 ± 5.13) s, (15.47 ± 3.50) s vs. (19.96 ± 4.75) s, there were statistical differences ( P<0.05). There were no statistical differences in the levels of potassium, chloride, sodium and calcium between the two groups after treatment ( P>0.05). After treatment, the levels of C-reactive protein (CRP) and procalcitonin (PCT) in the observation group were lower than those in the control group :(2.60 ± 0.86) mg/L vs. (4.35 ± 1.12) mg/L, (0.11 ± 0.03) μg/L vs. (0.19 ± 0.05) μg/L, there were statistical differences ( P<0.05). Conclusions:The application of citric acid anticoagulant in patients with sepsis and high-risk bleeding treated with CRRT can achieve significant curative effect, which can not only improve the anticoagulant effect, stabilize coagulation function and electrolyte level, but also down-regulate the level of inflammatory factors.

AIM To investigate effects of petroleum ether fraction from Derris eriocarpa How on glucose and lipid metabolism in a mouse model of metabolic syndrome(MS).METHODS KM mice were fed a high-fat diet and administered streptozotocin intraperitoneally to establish MS models.The MS mice were then randomly assigned to the model group,the metformin hydrochloride group,the lovastatin group,the ursolic acid group,and the high-,medium-and low-dose D.eriocarpa petroleum ether fraction groups,with 10 mice in each group.Ten additional mice maitained on a normal diet served as the normal control group.After 4 weeks of intragastric administration,glucose and lipid metabolism indicators were measured.Hepatic pathological changes were assessed using HE staining and oil red O staining.Liver tissue mRNA expressions of ATF3,PEPCK,FXR,CYP7A1,HNF4ɑ,CYP8B1 and SRB1 were quantified by RT-qPCR.Hepatic protein expressions of ATF3,HNF4ɑ,PEPCK,FXR and CYP7A1 was analyzed by Western blot in MS mice.RESULTS Compared to the model group,the high-dose D.eriocarpa petroleum ether fraction group exhibited significant glucose tolerance improvement(reduced OGTT-AUC,P＜0.01);favorable serum lipid modulation in terms of increased HDL-C levels(P＜0.01)and decreased TG,TC,LDL-C(P＜0.01);reduced renal biomarkers(BUN,SCR)and hepatotoxic indicators of TBA,AST and ALT activities(P＜0.01);alleviated hepatic lipid accumulation and histopathological damage;downregulated mRNA and protein expressions of ATF3,HNF4ɑ and PEPCK,as well as CYP8B1 mRNA expression(P＜0.01);and upregulated mRNA and protein expressions of FXR and CYP7A1,along with SRB1 mRNA expression(P＜0.01).CONCLUSION D.eriocarpa petroleum ether fraction ameliorates glucose and lipid metabolism dysregulation in MS mice by modulating the ATF3/HNF4ɑ/CYP7A1 signaling pathway,consequently eliciting hypoglycemic,hypolipidemic,hepatoprotective and nephroprotective effects.

Objective:To compare surgical-related indicators between non-inflated subclavian endoscopic surgery and axillary and traditional open surgery for the treatment of right lobe thyroid cancer,as well as their effects on postoperative anterior cervical function and cosmetic outcomes.Methods:This retrospective cohort study analyzed 151 cases of thyroid cancer patients who underwent surgical treatment at the Department of Thyroid Surgery,Zhengzhou Central Hospital Affiliated to Zhengzhou University from June 2024 to October 2024. Based on the surgical approach,patients were divided into three groups:56 cases of traditional open surgery group, 44 cases of non-inflated axillary approach group,and 51 cases of non-inflated subclavian approach group. Comparative indicators included surgical time, parathyroid autotransplantation rate,complete exposure rate of central area, number of lymph node dissections, number of positive lymph nodes, anterior cervical function, and satisfaction with incision beauty. One-way analysis of variance,non-parametric test,Kruskal-Wallis test,Pearson χ2 test and Fisher′s exact probability method were used to compare the results of the three groups and subsequent pairwise comparisons,respectively. Results:All laparoscopic surgeries were successfully completed without conversion to open surgery. (1) Surgical time:the traditional open surgery group had the shortest operative time ( M(IQR))(71.5(16.0)minutes), significantly shorter than both endoscopic groups (both P<0.01); among the endoscopic approaches, the non-inflated subclavian approach group (97.0(10.0)minutes) had a significantly shorter operative time than the non-inflated axillary approach group (115.0(11.0)minutes)( P<0.01). (2) Parathyroid autotransplantation rate:the rates were 53.6%(30/56) in the traditional group, 70.5%(31/44) in the non-inflated axillary approach group, and 66.7%(34/51) in the non-inflated subclavian approach group, with no statistically significant differences ( P>0.05). (3) Complete exposure rate of the central area:the exposure rate was 100%(56/56) in the traditional open surgery group, 86.4%(38/44) in the non-inflated axillary approach group, and 96.1%(49/51) in the non-inflated subclavian approach group. A significant difference was observed between the traditional open surgery group and the non-inflated axillary approach group ( χ2=8.124, P<0.01), but not observed between other groups. (4) Number of lymph node dissection:no significant difference was found among the three groups (8(6)(range:2 to 17) in the traditional open surgery group,7(3)(range:2 to 16) in the non-inflated axillary approach group,7(4)(range:2 to 16) in the non-inflated subclavian approach group)( P=0.078).(5) Number of positive lymph nodes:no significant differences were observed among the three groups( P=0.923). (6) Postoperative anterior cervical function:① Visual analogue scale: there was no significant difference between the non-insufflation transaxillary approach group and the non-insufflation subclavian approach group at 3 days and 1 month postoperatively ( P>0.017). However, the two groups had significantly lower scores than the traditional open group (both P<0.01). ② Neck disability index:at 3 days post-surgery, there were significantly lower in the axillary and subclavian groups compared to the traditional open group ( P<0.01), with no significant difference between the two endoscopic groups( P>0.017); at 1 month postoperatively, the traditional open surgery group, gasless axillary approach group, and gasless subclavian approach group, with statistically significant differences between each group (both P<0.01). ③ Swallowing disorder index: no significant differences were observed at 3 days post-surgery( P>0.05); however, at 1 month post-surgery, the endoscopic groups showed significantly lower scores compared to the traditional open group(both P<0.01).(7) Satisfaction with incision beauty:significant differences were found among the three groups in terms of vancouver scar scores, patient scar assessment scores, and observer scar assessment scores(all P<0.01). Conclusions:Compared to the non-inflated axillary endoscopic thyroidectomy, the non-inflated subclavian approach offers a technically simpler procedure, better exposure of the central lymph node dissection area, and superior protection of anterior cervical function, although it results in less favorable cosmetic outcomes. Under strict preoperative evaluation and appropriate indications,both non-inflated subclavian and axillary approaches can achieve outcomes comparable to traditional open surgery for cN0 thyroid cancer,demonstrating good clinical application value.

AIM To investigate effects of petroleum ether fraction from Derris eriocarpa How on glucose and lipid metabolism in a mouse model of metabolic syndrome(MS).METHODS KM mice were fed a high-fat diet and administered streptozotocin intraperitoneally to establish MS models.The MS mice were then randomly assigned to the model group,the metformin hydrochloride group,the lovastatin group,the ursolic acid group,and the high-,medium-and low-dose D.eriocarpa petroleum ether fraction groups,with 10 mice in each group.Ten additional mice maitained on a normal diet served as the normal control group.After 4 weeks of intragastric administration,glucose and lipid metabolism indicators were measured.Hepatic pathological changes were assessed using HE staining and oil red O staining.Liver tissue mRNA expressions of ATF3,PEPCK,FXR,CYP7A1,HNF4ɑ,CYP8B1 and SRB1 were quantified by RT-qPCR.Hepatic protein expressions of ATF3,HNF4ɑ,PEPCK,FXR and CYP7A1 was analyzed by Western blot in MS mice.RESULTS Compared to the model group,the high-dose D.eriocarpa petroleum ether fraction group exhibited significant glucose tolerance improvement(reduced OGTT-AUC,P＜0.01);favorable serum lipid modulation in terms of increased HDL-C levels(P＜0.01)and decreased TG,TC,LDL-C(P＜0.01);reduced renal biomarkers(BUN,SCR)and hepatotoxic indicators of TBA,AST and ALT activities(P＜0.01);alleviated hepatic lipid accumulation and histopathological damage;downregulated mRNA and protein expressions of ATF3,HNF4ɑ and PEPCK,as well as CYP8B1 mRNA expression(P＜0.01);and upregulated mRNA and protein expressions of FXR and CYP7A1,along with SRB1 mRNA expression(P＜0.01).CONCLUSION D.eriocarpa petroleum ether fraction ameliorates glucose and lipid metabolism dysregulation in MS mice by modulating the ATF3/HNF4ɑ/CYP7A1 signaling pathway,consequently eliciting hypoglycemic,hypolipidemic,hepatoprotective and nephroprotective effects.

Objective:To assess the efficacy and safety profile of antaitasvir phosphate combined with yiqibuvir in the treatment of chronic hepatitis C (CHC) of various genotypes, without cirrhosis or with compensated cirrhosis.Methods:394 cases with CHC from 22 centers were collected from October 2021 to April 2023. They were randomly assigned to receive either the experimental drugs (antaitasvir phosphate 100 mg+yiqibuvir 600 mg) or placebo treatment in a 3∶1 ratio. The patients were administered drugs once a day for 12 consecutive weeks, and then followed up for 24 weeks after treatment cessation. All subjects were unblinded at the four-week follow-up following drug discontinuation, with the experimental drug group continuing to complete subsequent post-discontinuation follow-up. The placebo group was switched to receive the experimental drugs for a repeated 12-week treatment period and followed up for another 24 weeks after discontinuation of the drug (placebo delayed treatment phase).The sustained virologic response rate (SVR12) was observed for subjects in the double-blind phase and the placebo delayed-treatment phase at 12 weeks after treatment cessation.Virological resistance analysis was performed on subjects who failed treatment. The primary efficacy endpoint was SVR12. The number and percentage of subjects who achieved "HCV RNA

Objective To comparatively analyze the clinical characteristics of primary bilateral macronodular adrenal hyperplasia(PBMAH)and adrenal cortisol-producing Adenoma(CPA),and enhance the understanding of two diseases.Methods The clinical data of 85 PBMAH patients(PBMAH group)and 195 CPA patients(CPA group)diagnosed at Department of Endocrinology,the First Medical Center of Chinese PLA General Hospital,from September 2014 to August 2024 were retrospectively analyzed.The demographic characteristics,comorbidities,biochemical indicators,adrenocorticotropic hormone-cortisol(ACTH-F)levels,and adrenal imaging features and treatment conditions were compared between the two groups.Results(1)General characteristics:Compared with CPA group,PBMAH group had older age at diagnosis and a higher proportion of male patients.(2)Clinical characteristics:Compared with CPA group,PBMAH group had a longer disease duration,a higher proportion of subclinical Cushing's syndrome(CS),and a higher proportion of hypertension,impaired glucose tolerance/diabetes,bone mass reduction or osteoporosis,with higher serum potassium levels,and the differences were statistically significant(P<0.01).(3)Hormone levels:Both PBMAH and CPA groups showed ACTH-F rhythm disorder,significantly increased cortisol levels and suppressed ACTH.Compared with PBMAH group,CPA group had stronger autonomous cortisol secretion ability,manifested by increased midnight serum cortisol(F0:00),16:00 serum cortisol(F16:00),24-hour urinary free cortisol(24 h UFC)levels and lower 8:00 serum ACTH(ACTH8:00)and 16:00 serum ACTH(ACTH16:00)(P<0.01).After low-dose dexamethasone suppression test(LDDST),CPA group showed lower suppression rates of ACTH and cortisol,and higher proportions of paradoxical elevation in serum cortisol and 24 h UFC compared with PBMAH(P<0.01).Conclusions PBMAH has a longer disease course and higher proportions of comorbid metabolic disorders than CPA,mostly manifested as subclinical Cushing's syndrome.CPA has stronger autonomous cortisol secretion ability,with cortisol less likely to be suppressed after LDDST and more obvious paradoxical elevation of cortisol and 24 h UFC.