Objective This study reports on the obligatory parasitism of water mites Arrenurus sp. on Anopheles messeae at the Manzhouli Port, Inner Mongolia, China. Methods Duing July 2024, a survey on the mosquito diversity was conducted at the Manzhouli Port. Captured mosquitoes and their ectoparasites were identified to species level. Results A total of 1840 adult mosquitoes were collected, representing species from three genera: Culex(Cx. modestus, Cx. pipiens pallens), Aedes(Ae. dorsalis, Ae. flavidorsalis, Ae. flavescens), and Anopheles (An. messeae). Among all the mosqutioes specimens,3 out of 150 captured An. messeae were found to carry ectoparasitic mites, with number of 2,4,27 mites separately. Morphological and molecular identification reached the same result as water mites(Hydrachnidiae, Hydracrina). COI gene sequence showed 94% similarity with the closest species Arrenurus truncatellus. Conlusions Literature review suggests water mites are host-specific parasitism of mosquito species and herein with the first record of Arrenurus sp. parasiting on An. Messeae in the most high-latitude region globally.

Objective We reviewed and analyzed the epidemiological data of 83 imported dengue fever cases reported in Fengtai District, Beijing, from 2007 to 2025, to delineate their epidemiological characteristics and guide the dengue fever prevention and control strategy in the future. Methods Data on dengue fever cases in Fengtai District from 2007 to 2025 were collected to identify the epidemic factors and characteristics using descriptive epidemiological method. Results All 83 dengue fever cases reported in this region over the past two decades have been imported from abroad or other domestic areas, with Southeast Asian countries being identified as the primary source of imported infections, accounting for 42 cases (50.60%), followed by 15 cases (18.07%) from Chinese provinces other than Beijing. The remaining import sources included 13 cases from South Asia,8 from African countries, and each from Oceania, South America, and Europe. Disease onset was found concentrated between May and November. The sex ratio (male-to-female) is 1.59:1. The age of onset ranged from 14 to 61 years old, with a median age of 36. The largest proportion of cases was observed among cadres and office workers (31 cases, 37.35%), followed by businessmen (13 cases, 15.67%), and householders or the unemployed (10 cases,12.05%). Travel visit was identified as the primary reason for their exposure history. Conclusions All dengue fever cases reported in Fengtai from 2007 to 2025 were imported, with an increasing trend of imported cases in Beijing originating from other Chinese provinces. It is essential to strengthen health education for foreign travelers and returning residents, enhance clinical diagnosis and treatment training for medical personnel, eliminate mosquito breeding sites, and reduce mosquito density through active patriotic health campaigns.

Aim To explore the mechanism of the syn-ergistic effect of the ferroptosis inducer erastin com-bined with shikonin in promoting ferroptosis in human hypertrophic scar fibroblasts(HSFBs).Methods Hypertrophic scar tissues provided by the General Hos-pital of Ningxia Medical University were collected,and HSFBs were extracted.HSFBs were identified by HE staining and immunofluorescence.The inhibitory rates of Era and SHK on HSFBs at different concentrations were detected by CCK-8 assay,and the IC50 value was calculated.CompuSyn software was used to calculate the co-use index(CI).Control group,Erastin(Era)group,shikonin(SHK)group and Era+SHK group were set up,and the number and morphological chan-ges of cells were observed after 24 hours of interven-tion.The ability of cell migration and invasion was de-tected by scratch test and Transwell test.The changes of malondialdehyde(MDA),total iron ion and reactive oxygen species(ROS)were detected by corresponding biochemical kits.The expressions of collagen I,α-SMA and GOT1,SLC7A11,GPX4 and FTH1 were detected by Western blot.Results The IC50 value of Era and SHK of primary HSFBs was 2.22 μmol·L-1 and 3.94μmol·L-1 respectively,which was used as the single drug concentration for subsequent experiments.The CompuSyn software was employed to calculate the CI value when the two drugs were used in combination,and the concentrations corresponding to CI=0.39597(Era:1.2 μmol·L-1+SHK:1.5 μmol·L-1)were selected as subsequent combination concentrations(Because when CI was equal to 0.395 97,the concen-tration of each drug was lower than the concentration of single drug,and the inhibition rate of combined drug was greater than 50％).Compared with the monother-apy group,the number of HSFBs in the SHK+Era group was significantly reduced,cell membrane showed breakage and vesiculation,cell wrinkling became smal-ler,and cytoplasm was concentrated.The migration and invasion ability of HSFBs in the SHK+Era group were obviously weakened(P＜0.05),and the expres-sion of fibrosis-related proteins collagen Ⅰ and α-SMA was reduced(P＜0.05);the contents of MDA,total i-ron ions,and ROS in HSFBs of the SHK+Era group increased(P＜0.05),and the protein expression lev-els of SLC7A11,GOT1,GPX4,and FTH1 further de-creased(P＜0.05).Conclusions Erastin in combi-nation with shikonin can synergistically inhibit the pro-liferation,migration and fibrosis levels of HSFBs.The mechanism may be that erastin enhances the inhibition of shikotin on GOT1,increases the levels of cellular i-ron ions,ROS,and lipid peroxides,thereby promoting ferroptosis in HSFBs.

This study systematically collated and textual researched realgar from aspects such as name,origin,and quality by consulting ancient herbal texts,classic medical books,and modern literature.The textual research shows that current herbal works all take"realgar"as the official name,with aliases including"Huangshi shi","Shihuang","Tianyang shi","Jiguan shi","Xunhuang","Chouhuang",and"Mingxiong",etc.Ancient herbal records indicate that Xunhuang,Chouhuang,and Shuiku Realgar are all Realgar,while Orpiment is its associated mineral.In ancient times,the main production areas of Realgar were in Gansu,with outputs also seen in Shandong and Hunan.Nowadays,it is mainly produced in Hunan,Guizhou,Hubei,Gansu,Yunnan,Sichuan and other regions.Ancient herbal works mentioned characteristics like"cockscomb color","non-stinky","solid","red and bright"in their quality evaluation,while modern herbal works mostly evaluate its quality by color and texture,such as"red color","large blocks","brittle texture","glossy".The traditional efficacy of Realgar is to dry dampness,kill insects,detoxify various poisons,treat sores and activate blood.Modern studies have shown it also has anti-tumor,antibacterial and antiviral effects.Processing methods in past dynasties included water grinding,vinegar processing,refining,etc.,and currently,water grinding and acid water grinding are commonly used.This paper observed the properties of Realgar,detected the content of As?S?,and analyzed the microscopic characteristics and far-infrared spectral characteristics of qualified batches of Realgar.It was finally found that the As?S? content of qualified batches of Realgar was all more than 90%;under the scanning electron microscope,it showed massive shape,uniform distribution,obvious particles,and no agglomeration;a small amount of associated mineral Orpiment crystals were observed under the polarizing microscope;the characteristic peaks of Realgar(343-344 cm?1,224-225 cm?1,372-374 cm?1,367-369 cm?1,359 cm?1,207-208 cm?1,193-194 cm?1,168-170 cm?1)and Orpiment(390 cm?1,380 cm?1,347 cm?1,311 cm?1,300 cm?1,201 cm?1,182 cm?1,158 cm?1 and 139 cm?1)were determined."Red color and glossy"can be used as property references,"Realgar is a sulfide mineral of the Realgar family,with the main chemical component As?S?,associated with Orpiment"can be used as origin references,and"Shimen in Hunan,Wanshan in Guizhou,Yunnan,Gansu,Sichuan"can be used as production area references,which are consistent with the results of herbal textual research.This study provides a basis for the identification and analysis of Realgar,with a view to better guiding clinical medication and resource utilization.

Insulin-like growth factor 2 (IGF2) is a critical endocrine mediator implicated in male reproductive physiology. To investigate the correlation between IGF2 protein levels and various aspects of male infertility, specifically focusing on sperm quality, inflammation, and DNA damage, a cohort of 320 male participants was recruited from the Women's Hospital, Zhejiang University School of Medicine (Hangzhou, China) between 1 st January 2024 and 1 st March 2024. The relationship between IGF2 protein concentrations and sperm parameters was assessed, and Spearman correlation and linear regression analysis were employed to evaluate the independent associations between IGF2 protein levels and risk factors for infertility. Enzyme-linked immunosorbent assay (ELISA) was used to measure IGF2 protein levels in seminal plasma, alongside markers of inflammation (tumor necrosis factor-alpha [TNF-α] and interleukin-1β [IL-1β]). The relationship between seminal plasma IGF2 protein levels and DNA damage marker phosphorylated histone H2AX (γ-H2AX) was also explored. Our findings reveal that IGF2 protein expression decreased notably in patients with asthenospermia and teratospermia. Correlation analysis revealed nuanced associations between IGF2 protein levels and specific sperm parameters, and low IGF2 protein concentrations correlated with increased inflammation and DNA damage in sperm. The observed correlations between IGF2 protein levels and specific sperm parameters, along with its connection to inflammation and DNA damage, underscore the importance of IGF2 in the broader context of male reproductive health. These findings lay the groundwork for future research and potential therapeutic interventions targeting IGF2-related pathways to enhance male fertility.
Humans ; Male ; Insulin-Like Growth Factor II/metabolism* ; Infertility, Male/genetics* ; DNA Damage ; Adult ; Inflammation/metabolism* ; Spermatozoa/metabolism* ; Semen Analysis ; Semen/metabolism* ; Tumor Necrosis Factor-alpha/metabolism* ; Histones/metabolism* ; Interleukin-1beta/metabolism*

Objective To explore a better surgical approach for the surgical treatment of avulsion fractures of the posterior cruciate ligament of the tibial plateau.Methods From July 2014 to May 2024,A total of 29 cases of avulsion fractures at the insertion point of the posterior cruciate ligament of the tibial platform were admitted to our department.They were divided into two groups according to different surgical approaches.There were 16 cases in group A,which adopted the modified posterior approach,and 13 cases in group B,which adopted the conventional posterior approach.The therapeutic effects of the two groups of patients were evaluated by using the Lysholm knee score scale after surgery and the KOOS knee injury and osteoarthritis outcome scoring system.Results All patients were followed up for 12 to 14 months,with an average of(12.6±0.3)months.No serious adverse complications such as non-healing of the surgical site occurred in group A.In group B,there was 1 case of delayed wound healing and 8 cases of knee joint pain during movement.The Lysholm knee joint score and KOOS knee joint outcome score of patients in group A at 12 months after the operation were(88.65±9.23)points and(90.48±6.84)points respectively,and those in group B were(63.98±10.77)points and(69.37±9.01)points respectively.Both groups in group A were more satisfied than those in group B,and the difference was statistically significant(P＜0.05).Conclusion For patients with avulsion fractures of the insertion point of the posterior cruciate ligament of the tibial platform,the modified minimally invasive penetrating muscle approach on the posterior side of the knee joint can reduce related complications such as excessive intraoperative bleeding,internal relaxation of the knee joint,and poor postoperative wound healing,enabling early functional exercise for patients and achieving a better prognosis.

Aim To explore the mechanism of the syn-ergistic effect of the ferroptosis inducer erastin com-bined with shikonin in promoting ferroptosis in human hypertrophic scar fibroblasts(HSFBs).Methods Hypertrophic scar tissues provided by the General Hos-pital of Ningxia Medical University were collected,and HSFBs were extracted.HSFBs were identified by HE staining and immunofluorescence.The inhibitory rates of Era and SHK on HSFBs at different concentrations were detected by CCK-8 assay,and the IC50 value was calculated.CompuSyn software was used to calculate the co-use index(CI).Control group,Erastin(Era)group,shikonin(SHK)group and Era+SHK group were set up,and the number and morphological chan-ges of cells were observed after 24 hours of interven-tion.The ability of cell migration and invasion was de-tected by scratch test and Transwell test.The changes of malondialdehyde(MDA),total iron ion and reactive oxygen species(ROS)were detected by corresponding biochemical kits.The expressions of collagen I,α-SMA and GOT1,SLC7A11,GPX4 and FTH1 were detected by Western blot.Results The IC50 value of Era and SHK of primary HSFBs was 2.22 μmol·L-1 and 3.94μmol·L-1 respectively,which was used as the single drug concentration for subsequent experiments.The CompuSyn software was employed to calculate the CI value when the two drugs were used in combination,and the concentrations corresponding to CI=0.39597(Era:1.2 μmol·L-1+SHK:1.5 μmol·L-1)were selected as subsequent combination concentrations(Because when CI was equal to 0.395 97,the concen-tration of each drug was lower than the concentration of single drug,and the inhibition rate of combined drug was greater than 50％).Compared with the monother-apy group,the number of HSFBs in the SHK+Era group was significantly reduced,cell membrane showed breakage and vesiculation,cell wrinkling became smal-ler,and cytoplasm was concentrated.The migration and invasion ability of HSFBs in the SHK+Era group were obviously weakened(P＜0.05),and the expres-sion of fibrosis-related proteins collagen Ⅰ and α-SMA was reduced(P＜0.05);the contents of MDA,total i-ron ions,and ROS in HSFBs of the SHK+Era group increased(P＜0.05),and the protein expression lev-els of SLC7A11,GOT1,GPX4,and FTH1 further de-creased(P＜0.05).Conclusions Erastin in combi-nation with shikonin can synergistically inhibit the pro-liferation,migration and fibrosis levels of HSFBs.The mechanism may be that erastin enhances the inhibition of shikotin on GOT1,increases the levels of cellular i-ron ions,ROS,and lipid peroxides,thereby promoting ferroptosis in HSFBs.

This study systematically collated and textual researched realgar from aspects such as name,origin,and quality by consulting ancient herbal texts,classic medical books,and modern literature.The textual research shows that current herbal works all take"realgar"as the official name,with aliases including"Huangshi shi","Shihuang","Tianyang shi","Jiguan shi","Xunhuang","Chouhuang",and"Mingxiong",etc.Ancient herbal records indicate that Xunhuang,Chouhuang,and Shuiku Realgar are all Realgar,while Orpiment is its associated mineral.In ancient times,the main production areas of Realgar were in Gansu,with outputs also seen in Shandong and Hunan.Nowadays,it is mainly produced in Hunan,Guizhou,Hubei,Gansu,Yunnan,Sichuan and other regions.Ancient herbal works mentioned characteristics like"cockscomb color","non-stinky","solid","red and bright"in their quality evaluation,while modern herbal works mostly evaluate its quality by color and texture,such as"red color","large blocks","brittle texture","glossy".The traditional efficacy of Realgar is to dry dampness,kill insects,detoxify various poisons,treat sores and activate blood.Modern studies have shown it also has anti-tumor,antibacterial and antiviral effects.Processing methods in past dynasties included water grinding,vinegar processing,refining,etc.,and currently,water grinding and acid water grinding are commonly used.This paper observed the properties of Realgar,detected the content of As?S?,and analyzed the microscopic characteristics and far-infrared spectral characteristics of qualified batches of Realgar.It was finally found that the As?S? content of qualified batches of Realgar was all more than 90%;under the scanning electron microscope,it showed massive shape,uniform distribution,obvious particles,and no agglomeration;a small amount of associated mineral Orpiment crystals were observed under the polarizing microscope;the characteristic peaks of Realgar(343-344 cm?1,224-225 cm?1,372-374 cm?1,367-369 cm?1,359 cm?1,207-208 cm?1,193-194 cm?1,168-170 cm?1)and Orpiment(390 cm?1,380 cm?1,347 cm?1,311 cm?1,300 cm?1,201 cm?1,182 cm?1,158 cm?1 and 139 cm?1)were determined."Red color and glossy"can be used as property references,"Realgar is a sulfide mineral of the Realgar family,with the main chemical component As?S?,associated with Orpiment"can be used as origin references,and"Shimen in Hunan,Wanshan in Guizhou,Yunnan,Gansu,Sichuan"can be used as production area references,which are consistent with the results of herbal textual research.This study provides a basis for the identification and analysis of Realgar,with a view to better guiding clinical medication and resource utilization.

Objective To explore a better surgical approach for the surgical treatment of avulsion fractures of the posterior cruciate ligament of the tibial plateau.Methods From July 2014 to May 2024,A total of 29 cases of avulsion fractures at the insertion point of the posterior cruciate ligament of the tibial platform were admitted to our department.They were divided into two groups according to different surgical approaches.There were 16 cases in group A,which adopted the modified posterior approach,and 13 cases in group B,which adopted the conventional posterior approach.The therapeutic effects of the two groups of patients were evaluated by using the Lysholm knee score scale after surgery and the KOOS knee injury and osteoarthritis outcome scoring system.Results All patients were followed up for 12 to 14 months,with an average of(12.6±0.3)months.No serious adverse complications such as non-healing of the surgical site occurred in group A.In group B,there was 1 case of delayed wound healing and 8 cases of knee joint pain during movement.The Lysholm knee joint score and KOOS knee joint outcome score of patients in group A at 12 months after the operation were(88.65±9.23)points and(90.48±6.84)points respectively,and those in group B were(63.98±10.77)points and(69.37±9.01)points respectively.Both groups in group A were more satisfied than those in group B,and the difference was statistically significant(P＜0.05).Conclusion For patients with avulsion fractures of the insertion point of the posterior cruciate ligament of the tibial platform,the modified minimally invasive penetrating muscle approach on the posterior side of the knee joint can reduce related complications such as excessive intraoperative bleeding,internal relaxation of the knee joint,and poor postoperative wound healing,enabling early functional exercise for patients and achieving a better prognosis.

Background Bacteria are the most diverse and widely sourced microorganisms in the indoor air of subway stations, where pathogenic bacteria can spread through the air, leading to increased health risks. Objective To understand the status and distribution characteristics of indoor air bacterial pollution in subway stations and compartments in a city of Central South China, and to provide a scientific basis for formulating intervention measures to address indoor air bacteria pollution in subways. Methods Three subway stations and the compartments of trains parking there in a city in Central South China were selected according to passenger flow for synchronous air sampling and monitoring. Temperature, humidity, wind speed, carbon dioxide (CO₂), fine particulate matter (PM_2.5), and inhalable particulate matter (PM₁₀) were measured by direct reading method. In accordance with the requirements of Examination methods for public places-Part 3: Airborne microorganisms (GB/T 18204.3-2013), air samples were collected at a flow rate of 28.3 L·min⁻¹, and total bacterial count was estimated. Bacterial microbial species were identified with a mass spectrometer and pathogenic bacteria were distinguished from non-pathogenic bacteria according to the Catalogue of pathogenic microorganisms transmitted to human beings issued by National Health Commission. Kruskal-Wallis H test was used to compare the subway hygiene indicators in different regions and time periods, and Bonferroni test was used for pairwise comparison. Spearman correlation test was used to evaluate the correlation between CO₂ concentration and total bacterial count. Results The pass rates were 100.0% for airborne total bacteria count, PM_2.5, and PM₁₀ in the subway stations and train compartments, 94.4% for temperature and wind speed, 98.6% for CO₂, but 0% for humidity. The overall median (P₂₅, P₇₅) total bacteria count was 177 (138,262) CFU·m⁻³. Specifically, the total bacteria count was higher in station halls than in platforms, and higher during morning peak hours than during evening peak hours (P<0.05). A total of 874 strains and 82 species were identified by automatic microbial mass spectrometry. The results of identification were all over 9 points, and the predominant bacteria in the air were Micrococcus luteus (52.2%) and Staphylococcus hominis (9.8%). Three pathogens, Acinetobacter baumannii (0.3%), Corynebacterium striatum (0.1%), and Staphylococcus epidermidis bacilli (2.2%) were detected in 23 samples (2.6%), and the associated locations were mainly distributed in train compartments during evening rush hours. Conclusion The total bacteria count in indoor air varies by monitoring sites of subway stations and time periods, and there is a risk of opportunistic bacterial infection. Attention should be paid to cleaning and disinfection during peak passenger flow hours in all areas.