BACKGROUND:Promoting skin wound healing is a huge challenge facing global public health.To promote faster and higher-quality wound healing,it is necessary to explore more advantageous dressings to address this problem.OBJECTIVE:To investigate the hemostatic properties of acellular dermal matrix hydrogel and its effect on skin wound healing.METHODS:(1)Acellular dermal matrix hydrogel was prepared,and the differences in microscopic morphology and main components between it and acellular dermal matrix were analyzed.(2)Acellular dermal matrix hydrogel and chitosan hydrogel were used to cover the femoral artery puncture site of rats,and the bleeding quality and coagulation time were recorded.Acellular dermal matrix hydrogel and chitosan hydrogel were mixed with rat anticoagulated blood,and the coagulation index within 30 minutes was detected.(3)A full-thickness skin defect model with a diameter of 12 mm was made on the back of 18 SD rats,and they were randomly divided into 3 groups,with 6 rats in each group:the model group used PBS to clean the wound,and the control group and the experimental group used chitosan hydrogel and acellular dermal matrix hydrogel to cover the wound,respectively.The hydrogel dressing was changed every day,and the treatment was continued for 14 days,and the wound healing was observed.On day 3 after modeling,immunofluorescence staining of inducible nitric oxide synthase(M1 macrophages)and CD206(M2 macrophages)was performed on the wound surface.On day 14 after modeling,hematoxylin-eosin staining,Masson staining,and CD31 immunohistochemical staining were performed on the wound surface.RESULTS AND CONCLUSION:(1)Scanning electron microscopy revealed that the acellular dermal matrix hydrogel had a porous structure,and the Fourier transform infrared spectrum showed that it had the same main components as the acellular dermal matrix.(2)Both acellular dermal matrix hydrogel and chitosan hydrogel had obvious hemostatic ability in vivo.In the in vitro coagulation experiments,the coagulation index of acellular dermal matrix hydrogel was significantly higher than that of chitosan hydrogel.(3)In the rat skin full-thickness defect model,both acellular dermal matrix hydrogel and chitosan hydrogel could improve the wound healing rate.Hematoxylin-eosin and Masson staining results showed that acellular dermal matrix hydrogel could reduce the infiltration of inflammatory cells in the center of the wound.Both acellular dermal matrix hydrogel and chitosan hydrogel could decrease scar width and increase collagen deposition rate.CD31 immunohistochemical staining results showed that both hydrogels could promote angiogenesis in the wound site.Immunofluorescence staining results showed that both hydrogels could reduce the proportion of M1 macrophages and increase the proportion of M2 macrophages,and the effect of acellular dermal matrix hydrogel was stronger than that of chitosan hydrogel.(4)The results show that the acellular dermal matrix hydrogel has good hemostatic properties and the ability to promote wound healing.

BACKGROUND:Promoting skin wound healing is a huge challenge facing global public health.To promote faster and higher-quality wound healing,it is necessary to explore more advantageous dressings to address this problem.OBJECTIVE:To investigate the hemostatic properties of acellular dermal matrix hydrogel and its effect on skin wound healing.METHODS:(1)Acellular dermal matrix hydrogel was prepared,and the differences in microscopic morphology and main components between it and acellular dermal matrix were analyzed.(2)Acellular dermal matrix hydrogel and chitosan hydrogel were used to cover the femoral artery puncture site of rats,and the bleeding quality and coagulation time were recorded.Acellular dermal matrix hydrogel and chitosan hydrogel were mixed with rat anticoagulated blood,and the coagulation index within 30 minutes was detected.(3)A full-thickness skin defect model with a diameter of 12 mm was made on the back of 18 SD rats,and they were randomly divided into 3 groups,with 6 rats in each group:the model group used PBS to clean the wound,and the control group and the experimental group used chitosan hydrogel and acellular dermal matrix hydrogel to cover the wound,respectively.The hydrogel dressing was changed every day,and the treatment was continued for 14 days,and the wound healing was observed.On day 3 after modeling,immunofluorescence staining of inducible nitric oxide synthase(M1 macrophages)and CD206(M2 macrophages)was performed on the wound surface.On day 14 after modeling,hematoxylin-eosin staining,Masson staining,and CD31 immunohistochemical staining were performed on the wound surface.RESULTS AND CONCLUSION:(1)Scanning electron microscopy revealed that the acellular dermal matrix hydrogel had a porous structure,and the Fourier transform infrared spectrum showed that it had the same main components as the acellular dermal matrix.(2)Both acellular dermal matrix hydrogel and chitosan hydrogel had obvious hemostatic ability in vivo.In the in vitro coagulation experiments,the coagulation index of acellular dermal matrix hydrogel was significantly higher than that of chitosan hydrogel.(3)In the rat skin full-thickness defect model,both acellular dermal matrix hydrogel and chitosan hydrogel could improve the wound healing rate.Hematoxylin-eosin and Masson staining results showed that acellular dermal matrix hydrogel could reduce the infiltration of inflammatory cells in the center of the wound.Both acellular dermal matrix hydrogel and chitosan hydrogel could decrease scar width and increase collagen deposition rate.CD31 immunohistochemical staining results showed that both hydrogels could promote angiogenesis in the wound site.Immunofluorescence staining results showed that both hydrogels could reduce the proportion of M1 macrophages and increase the proportion of M2 macrophages,and the effect of acellular dermal matrix hydrogel was stronger than that of chitosan hydrogel.(4)The results show that the acellular dermal matrix hydrogel has good hemostatic properties and the ability to promote wound healing.

ObjectiveTo investigate the association between immunoglobulin G （IgG）/immunoglobulin M （IgM） ratio and prognosis in patients with initially unresectable hepatocellular carcinoma （iuHCC） receiving TTP triple therapy with transcatheter arterial chemoembolization （TACE）， tyrosine kinase inhibitor （TKI）， and programmed cell death protein-1 （PD-1） inhibitors. MethodsA retrospective analysis was performed for the clinical data of 151 iuHCC patients who received TTP triple therapy in Department of Hepatobiliary Surgery， Guangxi Medical University Cancer Hospital， from November 2019 to December 2022， and according to IgG/IgM ratio， they were divided into high IgG/IgM group （IgG/IgM ratio >13.23） and low IgG/IgM group （IgG/IgM ratio ≤13.23）. The t-test was used for comparison of continuous data between groups， and the chi-square test was used for comparison of categorical data between groups. The Kaplan-Meier method and the log-rank test were used for survival analysis， and the Cox proportional hazards model was used to investigate the potential influencing factors for overall survival （OS）. ResultsThe 151 patients had a median OS of 26.7 months （95% confidence interval ［CI］： 19.8-not reached） and a median progression-free survival of 12.5 months （95%CI： 10.4 — 15.8）. The objective response rate was 83.4% and the disease control rate was 94.0%. There were no significant differences in baseline data between the high IgG/IgM group and the low IgG/IgM group （all P>0.05）. There was a significant difference in median OS between the high IgG/IgM group and the low IgG/IgM group （20.6 months vs not reached， P=0.016）. In both the high IgG/IgM group and the low IgG/IgM group， salvage hepatectomy was significantly associated with the improvement in OS （χ²=8.297 and 10.307， both P<0.05）. The multivariate analysis showed that high IgG/IgM ratio （hazard ratio ［HR］=1.799， 95%CI： 1.077 — 3.006， P=0.025）， baseline alpha-fetoprotein >400 ng/mL （HR=1.762， 95%CI： 1.017 — 3.050， P=0.043）， and BCLC stage （HR=2.265， 95%CI： 1.212 — 4.232， P=0.010） were independent influencing factors for OS. ConclusionHigh IgG/IgM ratio is associated with a poorer prognosis in iuHCC patients receiving TTP triple therapy， and salvage hepatectomy has a potential value in improving the prognosis of patients with a high IgG/IGM ratio.

Objective To explore the clinical features of fulminant type 1 diabetes mellitus (FT1DM). Methods The clinical data of 6 patients with FT1DM who were hospitalized in Jinshan Hospital of Fudan University from April 2020 to August 2024 were retrospectively analyzed. Their data were compared with that of 30 patients diagnosed with non-fulminant type 1 diabetes mellitus (NFT1DM) and diabetic ketosis or diabetic ketoacidosis (DKA) who were admitted to the hospital during the same period. The clinical characteristics of FT1DM were summarized. Results All 6 patients with FT1DM were male, with a disease course of 2.00 (1.75, 4.00) d. Three cases exhibited a history of prior infection, four tested positive for glutamic acid decarboxylase antibody (GADA), and five developed severe DKA. The glycated hemoglobin A_1C (HbA_1C) was (6.30±0.67) %, fasting C-peptide (FCP) was 0.07 (0.03, 0.15) ng/mL, 2-hour postprandial C-peptide (2h-CP) was 0.09 (0.03, 0.16) ng/mL. At discharge, all 6 patients received 4-injection insulin regimen, with a dose (0.69±0.15) U·kg⁻¹·d⁻¹. The body mass index (BMI), blood glucose/HbA_1C, blood potassium/HbA_1C, fasting plasma glucose (FPG), 2-hour postprandial plasma glucose (2h-PG), high-sensitivity C-reactive protein (hs-CRP), alanine aminotransferase (ALT), serum creatinine, and blood potassium levels in the FT1DM group were higher than those in the NFT1DM group (P＜0.05), while HbA_1C and glycated albumin (GA) levels were lower than NFT1DM group (P＜0.05). Conclusions FT1DM usually presents with an acute onset of DKA, may be accompanied by a history of preceding infection, and GADA can be positive. Patients with FT1DM have elevated blood glucose/HbA_1C, blood potassium/HbA_1C, FPG, 2h-PG, hs-CRP, ALT, serum creatinine, blood potassium levels, and require insulin therapy, while the HbA_1C and GA levels are lower.

Objective To evaluate the clinical characteristics and risk factors of healthcare-associated urinary tract infection(HA-UTI)due to vancomycin-resistant Enterococcus(VRE),and provide basis for clinical prevention and control.Methods Patients with VRE HA-UTI in a tertiary first-class hospital in Guangdong Province from January 2021 to October 2023 were selected as the VRE group.A 1∶2 case-control study method was conducted to select pa-tients with vancomycin-sensitive Enterococcus(VSE)UTI as the VSE group.Clinical characteristics of two groups of patients were compared and analyzed.Risk factors for VRE HA-UTI were analyzed using univariate regression and logistic multivariate regression.Results A total of 32 patients in the VRE group and 64 patients in the VSE group were included in the analysis.In VRE group,most patients were female(68.75％),aged≥60 years(71.88％),and from intensive care unit(ICU,56.25％).The main detected pathogen was vancomycin-resistant Enterococcus faecium(VREfm,96.87％).The proportion of clinical symptoms such as fever and lumbago as well as the levels of procalcitonin(PCT)and C-reactive protein(CRP)in patients in the VRE group were all higher than those in the VSE group(all P＜0.05).Logistic regression analysis results showed that concomitant pulmonary infection(OR=6.890,95％CI:1.098-43.218,P=0.039),history of hypertension(OR=4.240,95％CJ:1.084-16.581,P=0.038),and cephalosporin antibiotic exposure before infection(OR=4.642,95％CI:1.270-16.967,P=0.020)were independent risk factors for VRE HA-UTI.There were 32 and 64 strains of Enterococcus detected from VRE group and VSE group,respectively.VRE had higher resistance rates to ciprofloxacin,amoxicillin,ampicillin,peni-cillin G,tetracycline,high concentration gentamicin,and levofloxacin than VSE(all P＜0.05).Conclusion Pa-tients with VRE HA-UTI often have multiple underlying diseases and poor nutritional status,and are highly resis-tant to multiple antimicrobial agents.Clinical attention should be focused on patients with concomitant pulmonary infection,history of hypertension,and exposure to cephalosporin antibiotics.

Objective:To compare the efficacy of two surgical approaches for lumbar Brucellar spondylitis: one-stage posterior approach debridement with intervertebral bone graft fusion and pedicle screw-rod internal fixation (simple posterior group) versus one-stage anterior approach debridement with intervertebral bone graft fusion combined with posterior pedicle screw-rod internal fixation (combined anterior-posterior group).Methods:A systematic search was performed in the Cochrane Library, PubMed, Embase, China National Knowledge Infrastructure (CNKI), Chinese Biomedical Literature Database (CBM), VIP, and Wanfang Data from the time of database establishment to May 2024 to identify randomized controlled trial (RCT) and controlled clinical trial (CCT) comparing the two surgical approaches (simple posterior group and combined anterior-posterior group) in the treatment of lumbar Brucellar spondylitis. Meta-analysis was conducted by two researchers using RevMan 5.4.0 and Stata 13.1 software.Results:A total of 8 studies (2 RCTs, 6 CCTs studies) were included, including 669 patients (344 in the simple posterior group and 325 in the combined anterior-posterior group). Meta-analysis results revealed that the simple posterior group demonstrated shorter surgical time [ WMD = - 125.68, 95% CI ( - 186.84, - 64.53), P < 0.001], less intraoperative bleeding [ WMD = - 385.76, 95% CI ( - 572.40, - 199.11), P < 0.001], shorter hospital stay [ WMD = - 5.60, 95% CI ( - 8.30, - 2.91), P < 0.001], earlier postoperative ambulation time [ WMD = - 6.15, 95% CI ( - 10.72, - 1.59), P = 0.008], and a smaller Cobb angle at 3 months after surgery [ WMD = - 0.66, 95% CI ( - 1.23, - 0.09), P = 0.020]. However, there was no statistically significant differences in erythrocyte sedimentation rate [ WMD = 0.01, 95% CI ( - 0.90, 0.93), P = 0.980], visual analogue scale scores [ WMD = - 0.19, 95% CI ( - 0.40, 0.01), P = 0.070], Oswestry disability index score [ WMD = 0.02, 95% CI ( - 0.61, 0.66), P = 0.950] at 3 months after surgery, and postoperative complication rate [ OR = 0.57, 95% CI (0.17, 1.94), P = 0.370]. Conclusions:Compared with the combined anterior-posterior approach, the simple posterior approach has the advantages of shorter surgical time, less bleeding, and faster postoperative recovery. However, there is no significant difference between the two in terms of symptom improvement, functional recovery, and incidence of complications. Simple posterior approach surgery is an effective choice for treating lumbar Brucellar spondylitis.

Hereditary dentine disorders are a series of diseases with abnormal dentin structure and mineralization caused by ge-netic factors,of which the proceeding and genetic mechanisms could be effectively studied based on mouse models.This review in-troduces the basic classification and common pathogenic genes of hereditary dentine disorders,and overviews developmental char-acteristics as well as major markers of mouse dentin.Various types of genetically modified mice simulating human hereditary den-tine disorders are briefly described,providing a theoretical foundation for the deep study of these kinds of diseases.

In recent years,the incidence of differentiated thyroid cancer(DTC)continues to rise,with increasing attention to perioperative management and postoperative thyroid-stimulating hormone(TSH)suppression therapy strategies.The American Thyroid Association(ATA)released the"2025 American Thyroid Association Management Guidelines for Adult Patients with Differentiated Thyroid Cancer"in 2025,which include significant updates on perioperative parathyroid function protection and TSH suppression therapy.In terms of perioperative management,the 2025 ATA guidelines recommend intraoperative application of novel methods to identify and protect the parathyroid glands,and adoption of parathyroid hormone(PTH)-guided calcium and vitamin D supplementation protocols following total thyroidectomy.Regarding TSH suppression therapy,the 2025 ATA guidelines eliminate specific TSH target value recommendations for initial treatment,emphasizing that TSH targets should be dynamically adjusted based on patients'initial recurrence risk and treatment response to achieve individualized management and avoid overtreatment.

Objective To evaluate the predictive value of a nomogram model developed by integrating clinical and ultrasound multiparameters for HER-2-positive breast cancer.Methods This study retrospectively enrolled 343 patients with pathologically confirmed breast cancer from three medical centers and randomly divided them into training and validation cohorts.Univariate analysis,LASSO regression,and multivariate logistic regres-sion were conducted on the training set to identify independent prognostic factors and construct a nomogram model.Bootstrap resampling with 1000 iterations was performed to evaluate the model's robustness.Model calibration was assessed using calibration curves and the Hosmer-Lemeshow goodness-of-fit test.Receiver operating characteristic(ROC)curves were generated to evaluate model discrimination,and the area under the curve(AUC)along with other performance metrics were calculated.Decision curve analysis was employed to assess the clinical utility of the model,and the validation cohort was used for external validation.Results Univariate,LASSO,and multivariate regression analyses demonstrated that age,TTP(time to peak),and the presence of a filling defect sign were independent predictors of HER-2-positive breast cancer(all P<0.05).Based on these independent predictors,a nomogram model was constructed.Bootstrap validation with 1,000 resamples indicated that the model's predictive performance was stable.The Hosmer-Lemeshow test confirmed satisfactory model calibration,while the calibration curve illustrated accurate prediction probabilities.The area under the curve(AUC)for the training set was 0.863(95%CI:0.806～0.920),and for the validation set,it was 0.846(95%CI:0.764～0.929),indicating strong discriminative and generalization capabilities.Additionally,the clinical decision curve analysis demonstrated favor-able clinical utility.Conclusion A nomogram model integrating clinical and multimodal ultrasound parameters demonstrates potential utility in predicting HER-2-positive breast cancer.

Oral squamous cell carcinoma(OSCC)is a malignant lesion originating from the oral mucosal squamous epithelium,account-ing for over 80％of oral and maxillofacial malignancies.Key etiological factors include tobacco,alcohol abuse,and betel quid chewing.In China,its incidence has shown an overall upward trend,posing a significant threat to public health.OSCC exhibits high local invasive-ness,making early diagnosis critical for improving prognosis.Its clinical management requires close multidisciplinary collaboration among oral and maxillofacial surgery,head and neck surgery,radiation oncology,medical oncology,reconstructive surgery,radiology,patholo-gy,and nutritional support teams.Given the increasing disease burden of OSCC and rapid development of multidisciplinary collaborative models,an expert panel has formulated this integrated management consensus based on evidence-based medicine and extensive deliber-ation.Centered on the'Prevention-Screening-Diagnosis-Treatment-Rehabilitation'framework,the consensus provides comprehensive guidance for the entire disease course of OSCC patients,aiming to standardize clinical practice.