Objective To investigate the health status of workers exposed to noise in a brewery in Beijing and to analyze the relationship between hearing loss and blood pressure. Methods A total of 949 noise-exposed workers in a brewery who participated in occupational health examination were selected as the investigation subjects. A survey was conducted to investigate the pure tone hearing threshold and abnormal blood pressure of the workers with different characteristics, and to analyze the relationship between the two. Results Among the noise-exposed workers, the detection rates of hearing abnormality, hypertension, and increased systolic and diastolic blood pressure were 73.55%, 52.37%, 43.84% and 46.47%, respectively. The detection rates of hearing abnormality, indicators of hypertension, high frequency hearing threshold abnormality and increased binaural high frequency hearing threshold on average in males were higher than those in females (P < 0.05). Except that there was no statistically significant difference in weighted values of the better ear’s hearing thresholds among different working age groups (P> 0.05), the detection rates of other hearing abnormality, indicators of hypertension, speech frequency hearing threshold abnormality, high frequency hearing threshold abnormality，increased binaural high frequency hearing threshold on average and the weighted value of the better ear's hearing threshold all increased or had an increasing trend with the increase of age or working years (P< 0.05). The detection rates of hypertension in the groups with high frequency hearing threshold abnormality and increased binaural high frequency hearing threshold on average were higher than those in the normal group (P＜0.05). Conclusion The noise-exposed workers in the brewery have hearing impairment, which is related to the occurrence of hypertension. It is recommended to strengthen the publicity and education on noise protection and take protective measures to reduce the occurrence of occupational noise injury.

Umbilical cord mesenchymal stem cells (UC-MSCs) have been widely used in regenerative medicine, but there is limited research on the stability of UC-MSCs formulation during production. This study aims to assess the stability of the cell stock solution and intermediate product throughout the production process, as well as the final product following reconstitution, in order to offer guidance for the manufacturing process and serve as a reference for formulation reconstitution methods. Three batches of cell formulation were produced and stored under low temperature (2-8 ℃) and room temperature (20-26 ℃) during cell stock solution and intermediate product stages. The storage time intervals for cell stock solution were 0, 2, 4, and 6 h, while for intermediate products, the intervals were 0, 1, 2, and 3 h. The evaluation items included visual inspection, viable cell concentration, cell viability, cell surface markers, lymphocyte proliferation inhibition rate, and sterility. Additionally, dilution and culture stability studies were performed after reconstitution of the cell product. The reconstitution diluents included 0.9% sodium chloride injection, 0.9% sodium chloride injection + 1% human serum albumin, and 0.9% sodium chloride injection + 2% human serum albumin, with dilution ratios of 10-fold and 40-fold. The storage time intervals after dilution were 0, 1, 2, 3, and 4 h. The reconstitution culture media included DMEM medium, DMEM + 2% platelet lysate, 0.9% sodium chloride injection, and 0.9% sodium chloride injection + 1% human serum albumin, and the culture duration was 24 h. The evaluation items were viable cell concentration and cell viability. The results showed that the cell stock solution remained stable for up to 6 h under both low temperature (2-8 ℃) and room temperature (20-26 ℃) conditions, while the intermediate product remained stable for up to 3 h under the same conditions. After formulation reconstitution, using sodium chloride injection diluted with 1% or 2% human serum albumin maintained a viability of over 80% within 4 h. It was observed that different dilution factors had an impact on cell viability. After formulation reconstitution, cultivation in medium with 2% platelet lysate resulted in a cell viability of over 80% after 24 h. In conclusion, the stability of cell stock solution within 6 h and intermediate product within 3 h meets the requirements. The addition of 1% or 2% human serum albumin in the reconstitution diluent can better protect the post-reconstitution cell viability.

Objective To analyze the effects of deep learning image reconstruction(DLIR)and adaptive statistical iterative recon-struction V(ASIR-V)on the imaging quality of chest CT in patient with pulmonary nodules,and to evaluate the differences based on different image reconstruction techniques in the detection of efficiency of computer-aided diagnosis(CAD)for pulmonary nodules.Methods The image data of pulmonary nodules of eighty patients with chest CT screening were reconstructed with ASIR-V 80％,DLIR-low(DLIR-L),DLIR-medium(DLIR-M)and DLIR-high(DLIR-H)images,respectively.The objective image quality and sub-jective image quality of the four groups were compared and analyzed.Objective image quality includes CT value of region of interest(ROI),noise,signal-to-noise ratio(SNR),contrast-to-noise ratio(CNR)and image average gradient.The diagnostic efficacy of CAD in detecting pulmonary nodules of reconstructed images among four groups were further evaluated.Results There were no signifi-cant difference in CT value of ROI of reconstructed images among the four groups(P＞0.05).The noise,SNR and CNR of DLIR-H images were similar to those of ASIR-V 80％(P＞0.05),but significantly better than those of DLIR-L and DLIR-M(P＜0.05).The average gradient of DLIR-L,DLIR-M and DLIR-H images were significantly higher than those of ASIR-V 80％(P＜0.05).The subjective image quality scores of DLIR-L,DLIR-M and DLIR-H images were significantly higher than those of ASIR-V 80％(P＜0.05),and the subjective image quality score of DLIR-H image was the highest.CAD showed the highest true positive rate in DLIR-H images for detecting pulmonary nodules(P＜0.05),and CAD showed the highest false positives per capita in ASIR-V 80％images for detecting pulmonary nodules(P＜0.05).Conclusion The noise,SNR and CNR of DLIR-H images are similar to those of ASIR-V 80％,with the significantly higher image clarity and subjective image quality scores.DLIR-H has advantages in CAD detection of pulmonary nodules,which is an ideal image reconstruction technology for chest CT pulmonary nodule screening.

Based on UPLC-Q-orbitrap-MS and biological network analysis tools, the mechanism of Xihuang Pill in improving hyperplasia of mammary glands was systematically analyzed. The rat model of hyperplasia of mammary glands was established by intramuscular injection of estradiol benzoate and progesterone. LC-MS tissue metabolomics was used to explore the key metabolites and metabolic pathways of Xihuang Pill in improving hyperplasia of mammary glands in rat. The network analysis of the key metabolites regulated by Xihuang Pill was carried out by integrating biological network analysis tools, focusing on the key metabolic pathways, and exploring the potential targets of Xihuang Pill to improve hyperplasia of mammary glands. Compared with the control group, there were significant differences in the content of 49 differential metabolites in the tissues of the model group (P < 0.05). Xihuang Pills could significantly call back 17 metabolites such as L-alanine, threonine, indole-3-carboxylic aldehyde, lysine, arginine, alanylleucine, glycyltyrosine, γ-glutamyl leucine, vitamin B3, serine leucine, threonine leucine, isoleucine glutamic acid, γ-glutamyl tyrosine, decanoyl-L-carnitine, uric acid, leucylleucine, S-adenosyl-methionine. Further network analysis and literature research on the key metabolites regulated by Xihuang Pills showed that the AGE-RAGE signaling pathway may be one of the important pathways for Xihuang Pills to improve hyperplasia of mammary glands. STAT3, MAPK1, EGFR, CASP3, CASP8, PRKCA and JUN in the AGE-RAGE signaling pathway may be potential targets for Xihuang Pills to improve hyperplasia of mammary glands. The animal experiment operations involved in this paper follow the provisions of the Animal Ethics Committee of Gansu University of Traditional Chinese Medicine and pass the ethical review of animal experiments (approval number: 2022-705).

Objective To explore the clinical efficacy of omacycline(OMC)in the treatment of diabetes mellitus complicated with community-acquired bacterial pneumonia(CABP).Methods Clinical data of T2DM patients with CABP admitted to The First Hospital of Jiaxing from August 2022 to July 2023 were divided into OMC group and non-OMC(NOMC)group according to wheter they received OMC treatment or not.The absorption of pulmonary lesions after treatment,changes in inflammatory indicators[white blood cell count(WBC),C-reactive protein(C-reactive protein,CRP),and anterior calcitonin(procalcitonin,PCT)],comprehensive index[hospitalization days,total hospitalization costs,blood glucose standard within 3 d and glucocorticoid use]and the occurrence of adverse reactions were analyzed and compared.Results A total of 100 diabetes mellitus patients with CABP were included in this study,including 36 cases in OMC group and 64 cases in NOMC group.The absorption of pulmonary inflammation in the OMC group was significantly higher than that in the NOMC group(P<0.05).Before treatment,there was no statistical difference in WBC,CRP and PCT between the two groups(P>0.05).After treatment,WBC,CRP,and PCT in both groups were significantly lower than those before treatment(P<0.05).Furthermore,WBC,CRP,PCT levels,hospital stay,total hospitalization costs and glucocorticoid use rate were significantly lower in the OMC group than in the NOMC group(P<0.05).The blood glucose compliance rate within 3 d in the OMC group was significantly higher than that in the NOMC group(P<0.05).None of the patients had serious complications during the treatment period.Conclusion OMC treatment of T2DM complicated with CABP is helpful for early disease control and rehabilitation,and reduces the treatment burden.

Objective To summarize the application of double valve ring enlargement combined with mitral Chimney technique (Chimney Commando) in the secondary valve replacement and to analyze the efficacy in the near and medium term. Methods Patients who underwent the secondary aortic valve and mitral valve (double valve) replacement by Chimney Commando in Wuhan Asia Heart Hospital from 2019 to 2022 were included, and their clinical data were retrospectively collected to analyze the safety and feasibility of this procedure in secondary valve replacement of small aortic root patients. Results A total of 49 patients (44 females and 5 males) were included. The body surface area was 1.64±0.17 m2. The time from the first operation was 13.10±5.90 years. Except for 4 patients whose first operation was valvuloplasty, the remaining 45 patients were all patients after valve replacement, 41 patients of double valves replacement, including 39 patients with mechanical valve and 2 patients with biological valve. The majority of the aortic valves were St.Jude regent 19 mm or St.Jude regent 21 mm, accounting for 30.61% and 34.69%, respectively. The mitral valves were predominantly St.Jude 25 mm mechanical valves, making up 65.31%. All patients underwent Chimney Commando double valve ring enlargement, and the mean time of aortic occlusion was 154.00±45.40 min. The mean size of the aortic valve was 23.90±1.40 mm and that of the mitral valve was 28.20±1.20 mm, and the transvalvular pressure difference across the aortic valve was 20.16±5.76 mm Hg at 6 months postoperatively. There was one death during hospitalization due to multi-organ failure. The follow-up time ranged from 1 to 24 months with a median time of 8 months. Two patients were implanted with permanent pacemakers during the follow-up period and 1 patient died due to massive stroke and malignant arrhythmia. Conclusion Chimney Commando is safe and effective in patients with secondary double valve replacement, and the postoperative prosthetic valves have good hemodynamics, and can achieve good clinical results in the near and medium term.

Objective To explore the effects of optimized nutrition intervention scheme on nutritional status and clinical outcome during transplantation in the patients with allogeneic hematopoietic stem cell transplantation (allo-HSCT).Methods Seventy inpatients with allo-HSCT in this hospital from January to December 2022 were selected as the study subjects and divided into the control group and intervention group by the random number table method,35 cases in each group.The control group conducted the conventional nutritional intervention and the intervention group conducted the optimized nutritional intervention.The nutri-tional indicators[body weight,patient-generated subjective global assessment (PG-SGA),energy and protein intake],levels of total protein (TP),albumin (ALB) and prealbumin (PA),hospitalization duration,hospitali-zation costs and adverse reactions occurrence were compared between the two groups.The differences in the nutritional status and clinical outcomes in the tow groups were comprehensively evaluated.Results Compared with the control group,the body weight decrease ranges in entering the laminar flow ward and on 60 d of transplantation in the intervention group were much less[3.10(1.10,4.80)kg vs. 4.30(3.10,6.70)kg;3.20 (1.00,5.50)kg vs. 4.15(3.33,7.88)kg],the PG-SGA score was lower[(10.43±3.25)points vs. (13.00±3.05) points],the PA level was higher[(189.63±51.29)mg/L vs. (163.83±48.03)mg/L],the energy and protein oral intakes were much more[(753.99±350.66)kcal vs. (539.96±247.65)kcal;(33.87±15.87)g vs. (20.43±12.57)g],the diarrhea occurrence rate was lower (14.3％ vs. 37.1％),and the differences were statistically significant (P<0.05).Conclusion Optimizing the nutritional intervention during allo-HSCT pe-riod is beneficial to improve the nutritional status of the patients,and reduce the incidence rate of adverse reac-tions.

Objectives:To explore the risk factors for death from ruptured acute aortic dissection during emergency treatment,construct and validate a risk prediction model for death from ruptured acute aortic dissection during emergency treatment. Methods:A total of 301 cases of acute aortic dissection patients who were admitted to Chinese Academy of Medical Sciences Fuwai Hospital from January 2018 to August 2021 were included in this study.Patients were divided into survival subgroup(n=239)and death subgroup(n=62)according to whether dissection rupture occurred in the acute stage of the disease.Univariate and multivariate analyses were performed.Logistic regression analysis was used to establish the risk prediction model.The Hosmer-Lemeshow test was conducted to assess the model's goodness of fit,and the receiver operating characteristic curve(ROC curve)was used to evaluate the model's predictive performance.A prospective validation was performed on 129 cases of acute aortic dissection patients admitted to our hospital's emergency department from September 2021 to September 2022. Results:Among the 301 cases of acute aortic dissection patients,there were 62 cases of rupture and death,with an incidence rate of 20.6%.The results of multivariate analysis showed that age(OR=1.066,95%CI:1.034-1.099),type A dissection(OR=0.045,95%CI:0.006-0.364),history of hypertension(OR=0.377,95%CI:0.167-0.850),and concomitant hypotension(OR=4.424,95%CI:1.467-13.340)were determinants of deaths.The model formula was Z=-5.624+0.064×age-0.976×history of hypertension(yes=1,no=0)-3.104×type(Type A=0,Type B=1)+1.487×concomitant hypotension(yes=1,no=0).The Hosmer-Lemeshow test result showed χ2=9.328,df=8,P=0.315,the area under the ROC curve was 0.874,sensitivity was 79.0%,specificity was 81.6%,and the maximum Youden index was 0.606.The model validation result showed that the area under the ROC curve was 0.722,sensitivity was 73.7%,specificity was 69.1%,and accuracy was 89.9%. Conclusions:Age,history of hypertension,dissection type,and combined hypotension are predictors of the risk prediction model for death from dissection rupture in patients with acute aortic dissection during emergency treatment.The model constructed in this study has good predictive performance,which can provide reference for medical staffto quickly identify high-risk patients for death from ruptured acute aortic dissection and timely predictive measures could be highlighted in indicated cases.

Aim To clarify the differential proteins of mammary tissues in Xihuang pills(XHP)against hy-perplasia of mammary glands(HMG)based on quanti-tative proteomics technology and validate them,and to explore the mechanism of action.Methods SD rats were randomly divided into blank group,model group and XHP group,with 10 rats in each group.Except for the blank group,estrogen and progesterone were injec-ted intramuscularly to establish a rat model of mamma-ry hyperplasia for 30 d.After XHP was administered for 14 d,the rats in each group were observed to have morphological changes in the apparent morphology of the mammary tissues,and pathological changes in the mammary tissues were stained with hematoxylin-eosin staining(HE),and the differentially expressed pro-teins(DEPs)in the groups were screened by quantita-tive proteomics technology and subjected to bioinforma-tics analysis,and Western blot to verify the key DEPs.Results Compared with the model group,the appar-ent pathological morphology of the XHP group was sig-nificantly improved,the diameter of the nipple height of the rats was significantly reduced(P＜0.01),and the degree of histopathology was significantly allevia-ted.Quantitative proteomics identified 4,299 DEPs in mammary tissue,and bioinformatics analysis of 14 DEPs with consistent changes between the XHP group and the blank group relative to the model group re-vealed that they were related to the regulation of mus-cular systemic processes,regulation of muscle contrac-tion,DNA replication,and pre-initiation of DNA repli-cation.Western blot results showed that,compared with the model group,rat mammary tissue of the XHP group showed significantly lower levels of ACLY and ALDOC protein expression levels were significantly re-duced and BIN1 protein expression levels were signifi-cantly increased(P＜0.01).Conclusions XHP may exert its anti-mammary hyperplasia effect through the regulation of BIN1,ACLY and ALDOC protein lev-els,the regulation of DNA replication,the regulation of pre-initiation of DNA replication and muscular sys-temic processes,and the regulation of muscle contrac-tion.

NLRP3 can recruit proteins such as ASC and pro-caspase1 to form NLRP3 inflammasomes after being stimulated by pathogen and danger signals in vivo,and then induce pyropto-sis and promote the inflammatory reactions to maintain the home-ostasis.However,the overactivation of NLRP3 inflammasomes is closely related to many inflammatory and autoimmune diseases in humans.Targeted inhibition of NLRP3 inflammasomes can sig-nificantly inhibit inflammation and alleviate the relative symp-toms.Therefore,it is an important research direction for treating diseases of NLRP3 inflammasome that searching for effective in-hibitors targeting NLRP3 inflammasome activation and achieving clinical transformation.This review summarizes the latest re-search progress based on the sources of NLRP3 inflammasome inhibitors.