Objective To analyze the monitoring results of occupational hazard factors (OHF) in the workplace of key industries in Shaoguan City from 2021 to 2024. Methods A total of 486 enterprises of key industries in Shaoguan City, selected from the "Occupational Diseases Hazardous Items Reporting System" and the "Guangdong Provincial Occupational Health Quality Control Platform" from 2021 to 2024, were used as the research subjects. Data on the declaration of occupational hazard projects, the exposure to OHF and the occupational medical examinations for workers, the usage of protective equipment and the setup of protection facilities in enterprises, and the monitoring results of OHF were analyzed. Results From 2021 to 2024, a total of 486 enterprises of key industries in Shaoguan City were monitored, and the detection rate of OHF exceeding national standard was 57.0%. The exceedance rates in medium/large enterprises and small/micro enterprises were 67.1% and 55.0%, respectively. A total of 51 771 worker-exposures to OHF were recorded, with an exposure rate of 55.8%. Training coverage for enterprise managers, occupational health personnel, and workers were 96.7%, 97.1%, and 98.7%, respectively. Abnormal rates in occupational medical examinations were 3.3%, 0.2%, and 0.8% among workers exposed to noise, dust, and chemical factors, respectively. Provision rates of dust respirators, chemical respirators, hearing protection devices (earplugs and earmuffs) were 93.2%, 85.4% and 86.8%, respectively, with wearing compliance rates of 98.7%, 98.8% and 97.1%. Installation rates of dust control, chemical hazard control, and noise control facilities were 97.2%, 90.3%, and 69.9%, respectively, and all facilities were 100.0% effective. Exceedance rates for OHF and noise increased annually (all P<0.05), whereas those for dust and chemical factors decreased (all P<0.05). The exceedance rates of work position from high to low were dust (18.1%), noise (17.1%) and chemical factors (6.4%). Lead-related position had the highest exceedance rate (31.9%). Industries with higher exceedance rates included metal products manufacturing (27.3%), ferrous metal smelting and rolling (24.1%), and non-metallic mineral products manufacturing (23.7%). Conclusion Workplaces in key industries of Shaoguan City face relatively high risks of occupational hazards. It is essential to focus on noise management, with efforts to strengthen occupational health supervision and guidance for small/micro enterprises as well as industries with severe occupational hazards, promoting the standardization of occupational health management.

Objective:To explore the diagnostic value of small field of view ZooMit diffusion weighted imaging(Z-DWI)sequence of magnetic resonance imaging(MRI)in assessing benign and malignant pulmonary nodules.Methods:A total of 60 patients with pulmonary nodules who underwent MR examination at the First Affiliated Hospital with Nanjing Medical University from January 2021 to December 2022 were prospectively collected.All patients underwent conventional DWI(C-DWI)and Z-DWI.The signal to noise ratio(SNR),contrast to noise ratio(CNR),and apparent diffusion coefficient(ADC)of them were measured and analyzed.Two physicians with more than 8 years of experience in diagnosing pulmonary nodules implemented subjective scores for the image quality.Then,the ADC values of benign and malignant nodules between two kinds of images were compared.Results:The scores of Z-DWI images quality in terms of artifact,display of anatomical detail,lesion clarity,and image distortion were respectively(3.53±0.52),(3.27±0.70),(2.87±0.64),and(2.93±0.71),which were all higher than those of C-DWI images,and the differences were statistically significant(t=-4.68,-3.56,-2.44,-2.87,P<0.05).The SNR and CNR values of Z-DWI sequence were respectively(123.4±39.9)and(124.9±24.7),all of which were higher than those of C-DWI sequence,and the differences were statistically significant(t=-8.63,-7.09,P<0.05).The ADC values of C-DWI images of benign and malignant nodules were respectively(1.53±0.27)and(1.09±0.22),and the difference of that between them were statistically significant(t=9.88,P<0.001).The ADC values of Z-DWI images of benign and malignant nodules were respectively(1.39±0.18)and(0.99±0.19),and the difference of that between them was statistically significant(t=7.30,P<0.001).The ADC values of benign and malignant nodules of C-DWI images were higher than those of Z-DWI images,and the differences were statistically significant(t=3.40,2.13,P<0.05).Conclusion:Z-DWI can improve the image quality of benign and malignant pulmonary nodules,which has important clinically diagnostic significance in assessing the benign and malignant natures of pulmonary nodules.

Objective:To explore the clinical efficacy of modified Yiqi Huayu pelvic inflammation decoction combined with retention enema of traditional Chinese medicine (TCM) and moxibustion at Shenque acupoint in the treatment of patients with chronic pelvic inflammatory disease (CPID).Methods:A total of 120 CPID patients admitted to the Qian′an City Traditional Chinese Medicine Hospital from January 2023 to June 2024 were prospectively enrolled and randomly divided into the control group (60 cases, treated with modified Yiqi Huayu pelvic inflammation decoction) and the observation group (60 cases, treated with modified Yiqi Huayu pelvic inflammation decoction plus TCM retention enema and moxibustion at Shenque acupoint) using a random number table. Each course of treatment was 3 weeks, with drug withdrawal for 1 week during menstruation, and continuous treatment for 2 courses. The clinical efficacy of the two groups was observed. The TCM symptom scores, blood microcirculation indicators [whole blood low shear viscosity (LBV), whole blood high shear viscosity (HBV), platelet aggregation rate (PAR), hematocrit (HCT)], and serum inflammatory factors [tumor necrosis factor-α (TNF-α), interleukin-2 (IL-2), high mobility group box 1 (HMGB1), granulocyte-macrophage colony-stimulating factor (GM-CSF)] before and after treatment were compared. The patients were followed up for 3 months after treatment to compare the incidence of adverse reactions and recurrence between the two groups.Results:The total clinical effective rate of the observation group (95.00%, 57/60) was higher than that of the control group (83.33%, 50/60) ( P<0.05). After treatment, the individual scores of main and secondary symptoms and the total score of TCM syndrome in the observation group were lower than those in the control group (all P<0.05). After treatment, the levels of LBV, HBV, PAR, HCT, TNF-α, IL-2, HMGB1, and GM-CSF in the observation group were lower than those in the control group (all P<0.05). There was no statistically significant difference in the total incidence of adverse reactions between the two groups ( P>0.05). During the 3-month follow-up after treatment, the recurrence rate of the observation group was 3.33%(2/60), which was lower than 15.00%(9/60) of the control group ( P<0.05). Conclusions:Modified Yiqi Huayu pelvic inflammation decoction combined with TCM retention enema and moxibustion at Shenque acupoint has a definite efficacy in the treatment of CPID. It can effectively relieve clinical symptoms, improve blood microcirculation and inflammatory factor levels of patients, with a low short-term recurrence rate and no significant increase in the incidence of adverse reactions.

Objective To explore the protective effect of 7,8-dihydroxyflavone(7,8-DHF)on the retina of diabetic rats and its mechanism.Methods A total of 18 SPF-grade male Sprague-Dawley(SD)rats were selected and randomly divided into three groups:the normal group,the model group,and the experimental group,with six rats in each group.Rats in the normal group were fed with a normal diet,while those in the remaining two groups were fed with a high-fat emulsion through oral gavage continuously for 2 weeks to establish a diabetes model.Rats in the experimental group were provided with 7,8-DHF(5 mg?kg-1)by continuous intraperitoneal injection,while those in the normal and model groups were provided with an equal volume of normal saline.The rats in all groups received intervention once a day for 2 weeks.The changes in the body mass and fasting blood glucose(FBG)were observed before and after modeling.Besides,the changes in the retina of rats in each group were observed by fundus fluorescence angiography(FFA)after 2 weeks.Moreo-ver,the changes and apoptosis of retinal neuronal cells were detected by hematoxylin and eosin(HE)staining,CD31 im-munofluorescence,and terminal deoxynucleotidyl transferase dUTP nick end labeling(TUNEL)assays.Results After 2 weeks of continuous intervention,compared with the normal group,the body mass of rats in the model and experimental groups decreased(both P＜0.05),and the FBG increased significantly(both P＜0.05);compared with the model group,the experimental group showed an increase in the body mass(P＜0.05)and a decrease in the FBG(P＜0.05).The fundus photography and FFA of rats in the three groups did not reveal any fundus features of diabetic retinopathy.The HE staining results showed that the retina of rats in the normal and experimental groups was structurally intact,with neatly arranged cells and uniform thickness;the retinal structure of rats in the model group remained clear.However,the thickness of the inner layers of the retina of rats in the model group was thinner compared with the normal and experimental groups,exhibi-ting significant differences(both P＜0.05).The CD31 immunofluorescence assay results indicated that the CD31 immuno-fluorescence intensity values of rats in the three groups were roughly comparable,without significant differences(all P＞0.05).The TUNEL assay results suggested that the apoptosis of retinal neurons increased in rats in the model group com-pared with the normal group,exhibiting significant differences(P＜0.001);compared with the model group,the apoptosis of retinal neurons of rats in the experimental group decreased significantly,displaying significant differences(P＜0.001).Conclusion The apoptosis of retinal neurons in diabetic rats may precede vascular endothelial cell injury.7,8-DHF can improve the body mass,decrease the blood glucose level,and protect the retinal neurons in diabetic rats.

Objective To establish a laser diffraction method for determining globule size distribution in medium and long chain fat emulsion injection(C8～24Ve).Methods The Mastersizer 3000 laser particle size analyzer and Hydro EV wet sampling device were used,with water as the dispersion medium.Critical parameters,including refractive index,absorption coefficient,obscuration,measurement duration,stirring speed,and sonication parameters,were systematically optimized.Comparative evaluations were conducted across different computational models(Mie vs.Fraunhofer theories)and instrument platforms.Results The optimized optical parameters for particle size distribution analysis of medium and long chain fat emulsion injection(C8～24Ve)were determined as follows:absorption rate 0.001,refractive index 1.52,measurement duration 10 s,stirring speed 1 200 r·min-1,with no sonication applied.Under these conditions,the method demonstrated satisfactory precision,repeatability,and robustness.Conclusions This method demonstrates operational simplicity,high accuracy,and excellent reproducibility,making it suitable for particle size distribution analysis of medium and long chain fat emulsion injection(C8～24Ve).The established protocol provides a valuable reference for the development of particle size determination methods for emulsion formulations.

Due to the difficulty of overcoming the abnormal epidermal barriers and addressing S. aureus infections without disrupting indigenous skin microbiota, effective treatment of bacterial infection atopic dermatitis (AD) remains a significant clinical challenge. Skin microbiota-derived extracellular vesicles (EVs) shows protentional for skin disease treatment, but the lack of antimicrobial activity and limited skin penetration hamper their application in bacterial infection AD treatment. Here, we developed novel nanoantibiotics by loading Lev into S. epidermidis-derived EVs (Lev@SE-EVs), with supreme antimicrobial activity, regulating epidermal immune responses and enhanced epidermal barrier functionality. The nanoantibiotics were further integrated into hyaluronic acid-based microneedle (MN) for efficient transdermal delivery of therapeutic agents and effectively treating bacterial infection in AD. Upon insertion into the skin, the rapidly released Lev@SE-EVs from MN are uptake by S. aureus in a selective manner, fibroblasts, and surrounding immune cells to exert therapeutic effects in the infected dermal layer, resulting in mitigated skin inflammation, reduced S. aureus burden and increased dermis repair. Notably, Lev@SE-EVs induce IL-17A⁺ CD8⁺ T-cell accumulation in the skin in an unrelated inflammation manner, which may represent heterologous protection. This EVs-integrated MN assisted Lev@SE-EVs to alleviate skin inflammation, repair skin, and provide an effective and safe therapeutic approach for bacterial infection AD treatment.

Objective:To compare the short-term outcomes of arthroscopic suture bridge technique versus those of arthroscopic tie knot technique in the treatment of tibial avulsion fractures of the anterior cruciate ligament (ACL).Methods:A retrospective study was conducted to analyze the 53 patients with ACL tibial avulsion fracture who had been treated arthroscopically at Department of Sports Medicine, Wuhai People's Hospital between February 2018 and February 2024. There were 31 males and 22 females, with an age of (48.2±5.1) years. The left knee was affected in 27 cases and the right knee in 26 cases. According to the Meyers-Mckeever classification, 32 cases were of type Ⅱ and 21 cases of type Ⅲ. The patients were divided into 2 groups according to different fixation methods: 20 cases were fixed by the arthroscopic tie knot technique (the tie knot group) and 33 cases by the arthroscopic suture bridge technique (the suture bridge group). The operation time and fracture healing time were recorded and compared between the 2 groups. At preoperation, 3 and 6 months after operation, and the last follow-up, the knee pain was evaluated by visual analogue scale (VAS) pain score, the knee stability (side to side disparity) by a KT-1000 arthrometer, and the knee function by The International Knee Documentation Committee (IKDC) subjective score, Lysholm score, knee range of motion, and activities of daily living (ADL) scale. Comparisons were made between and within the 2 groups.Results:The differences in the general preoperative data were not statistically significant between the 2 groups, indicating comparability ( P>0.05). The tie knot group and the suture bridge group were followed up respectively for (13.9±2.1) and (14.5±2.1) months. The surgical time for the suture bridge group [(66.9±8.4) min] was significantly longer than that for the tie knot group [(51.2±6.3) min] ( P<0.05). At 3 months after operation, the VAS pain score [(1.2±0.2) points], side to side disparity [(2.5±0.6) mm], IKDC subjective score [(89.6±1.6) points], Lysholm score [(88.0±1.4) points], knee range of motion (132.1°±2.1°), and ADL score [(88.8±3.3) points] in the suture bridge group were significantly better than those in the tie knot group [(2.1±0.3) points, (3.0±0.9) mm, (87.0±1.4) points, (84.0±1.6) points, 102.1°±2.1°, and (80.3±3.4) points] ( P<0.05). However, there were no significant differences in VAS pain score, side to side disparity, IKDC subjective score, Lysholm score, knee range of motion or ADL score between the 2 groups at 6 months after operation or at the last follow-up ( P>0.05). Statistically significant differences were observed between all time points for VAS pain scores, side-to-side disparity, IKDC subjective scores, Lysholm scores, knee range of motion, and ADL scores in all patients ( P<0.05). No incision infection, nerve injury or other complications occurred in the 2 groups after operation. Conclusions:Both arthroscopic suture bridge technique and arthroscopic tie knot technique are safe and effective intervention options for avulsion fractures of the ACL tibial insertion. The suture bridge technique, with its stable biomechanical properties, can significantly accelerate the process of early postoperative knee function recovery to shorten the recovery period. However, it requires longer surgical time.

Objective To develop and implement a drug treatment pathway for the initial treatment of diffuse large B-cell lymphoma(DLBCL)and to provide a foundation for refined medication use and cost control management under the Diagnosis Related Groups(DRG)payment system.Methods Clinical pharmacists collaborated to develop a drug treatment pathway for the initial treatment of DLBCL,utilizing evidence-based medicine and evidence-based pharmacy principles.The PDCA(Plan-Do-Check-Act)cycle method was employed for administrative intervention.The hematology department served as a pilot unit to assess the impact on economic indicators,including inpatient costs,drug expenses,and DRG payment balance,as well as treatment efficacy and the incidence of adverse reactions.Results Compared to the control group,the RG13 intervention group exhibited a significant reduction in average total hospitalization costs and drug expenses,along with a decreased DRG payment balance deficits.All differences were statistically significant(P＜0.05).Conclusion The development and implementation of a drug treatment pathway for the initial treatment of DLBCL can effectively reduce treatment costs,prevent DRG overspending,and alleviate the economic burden on patients,while ensuring the safety and effectiveness of the treatment.

Wastewater-based epidemiology(WBE)has emerged in recent years as a crucial complementary tool for tracking the community transmission and infection prevalence of SARS-CoV-2 and other viral pathogens.This short review comprehensively de-scribes the diversity of viruses in wastewater,with a focus on current advancements in aspects including sampling methods,concentra-tion and enrichment strategies,detection approaches,and setting up quality controls for wastewater-based viral pathogen surveillance.The systematic summary of global status,technical progress,and challenges highlights the feasibility of WBE viral surveillance within a One Health framework,thus facilitating use of WBE as a tool for early warning of viral disease outbreaks and predicting epidemic trends in the future.