Thyroid diseases are common clinical endocrine disorders， and their pathogenesis is generally considered to be closely related to genetic predisposition factors， immune system disorders， hormone levels， etc. Xiaoyaosan is widely used in the treatment of various thyroid diseases with excellent effects. This study summarized the relevant literature on the treatment of thyroid diseases with modified Xiaoyaosan prescriptions and their active ingredients from aspects such as theoretical analysis， clinical research， and mechanism research. Theoretical analysis revealed that Xiaoyaosan could not only disperse stagnated liver qi but also replenish deficient spleen Qi， which was consistent with the etiology and pathogenesis of thyroid diseases. Clinical studies found that Xiaoyaosan and its modified prescriptions could be widely used in the treatment of multiple thyroid diseases， such as hyperthyroidism， Hashimoto's thyroiditis， and thyroid nodules. Both the use of modified Xiaoyaosan alone and in combination with medications such as methimazole， propylthiouracil， and euthyrox could effectively improve patients' clinical symptoms. In the mechanism research， this study discovered that the whole formula of Xiaoyaosan and its modified prescriptions could inhibit inflammatory reactions， regulate immune balance， and delay liver damage during the treatment of thyroid diseases. The research on Xiaoyaosan for treating thyroid diseases mainly focused on thyroid cancer， autoimmune thyroiditis， hyperthyroidism， and hypothyroidism. The mechanisms of action mainly involved promoting cell apoptosis， inhibiting cell proliferation and migration， arresting the cell cycle， and regulating thyroid hormone levels. In conclusion， this study systematically combs and summarizes the research status of Xiaoyaosan in treating thyroid diseases through literature retrieval， aiming to provide new perspectives and new ideas for the prevention and treatment of thyroid diseases with traditional Chinese medicine.

In this study, high-throughput promoter screening was employed to optimize the heterologous expression of Mesorhizobium loti carbonic anhydrase (MlCA) in order to reduce the costs associated with carbon capture and storage (CCS). To simplify the complexity of traditional vectors, a fusion protein expression system was constructed using superfolder green fluorescent protein (sfGFP) and MlCA. The synthetic promoter library in Escherichia coli was utilized for efficient one-step screening. Based on fluorescence intensity on agar plates, a total of 143 monoclonal colonies were identified, forming a library with varying expression levels. The top four recombinants with the highest fluorescence intensity were selected, among which MlCA driven by the promoter 342042/+ exhibited the highest enzymatic activity, with a specific activity of the 34.6 Wilbur-Anderson units (WAU)/mg. Optimization experiments revealed that MlCA exhibited the best performance when cultured for 4 days under pH 7.0 and 40 ℃ conditions. The Michaelis constant (K_m·hdy) and maximum reaction rate (V_max·hdy) for CO₂ hydration were determined to be 62.46 mmol/L and 0.164 mmol/(s·L), respectively. For esterase hydrolysis, MlCA showed the K_m and V_max of 639.8 mmol/L and 0.035 mmol/(s·L), respectively. MlCA accelerated the CO₂ hydration process, promoting CO₂ mineralized into CaCO₃ within 9 min at low pH and room temperature conditions. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses confirmed that the precipitated product was calcite. This study provides a low-cost and environmentally friendly alternative for future CCS applications.
Carbonic Anhydrases/biosynthesis* ; Promoter Regions, Genetic/genetics* ; Escherichia coli/metabolism* ; Carbon Sequestration ; Carbon Dioxide/metabolism* ; Green Fluorescent Proteins/metabolism*

Thyroid diseases are common endocrine disorders with high incidence. The diseases are closely related to genetic factors， immune system disorders， and hormone levels. Although modern medical therapies have achieved certain therapeutic effects， the side effects have affected clinical treatment. In recent years， studies have proven that gut microbiota is a key factor affecting thyroid diseases， and increasing studies have referred to the bidirectional information interaction system between the gut and thyroid as the gut-thyroid axis. This study adopts the meridian-collateral theory and the visceral manifestation theory of traditional Chinese medicine （TCM） to explain the functions， physiological characteristics， and pathological mechanisms of the gut and thyroid. Furthermore， this paper clarifies the mechanism of gut microbiota in modulating thyroid homeostasis by inducing inflammation and altering thyroid hormone metabolism from the perspective of molecular biology， clarifying the rationality of the gut-thyroid axis from the perspectives of TCM and Western medicine. Meanwhile， under the guidance of the gut-thyroid axis， increasing studies have been carried out regarding the application of TCM in regulating gut microbiota in the treatment of thyroid diseases. Both the active component emodin and compound prescription Yiqi Huatan Huoxue prescription of Chinese medicine can treat thyroid diseases by regulating the abundance and diversity of gut microbiota and improving the intestinal mucosal barrier. However， the systematic review of the research on TCM treatment of thyroid diseases by regulating gut microbiota remains to be conducted. This study expounds the gut-thyroid axis from both TCM and Western medicine and reviews the research progress in the TCM treatment of thyroid diseases by regulating gut microbiota， aiming to give new insights into the prevention and treatment of thyroid diseases with TCM.

Objective: To investigate the relationship between tropomodulin 3(TMOD3) and the malignant biological characteristics of hepatocellular carcinoma, and the predictive potential of TMOD3 as a biomarker for the recurrence and metastasis of hepatocellular carcinoma. Methods: Firstly, the structure of TMOD3 and its subcellular localization in cells and tissues were analyzed using database of Human Protein Atlas. Then explored the differential expression of TMOD3 in hepatocellular carcinoma tissues and normal liver tissues and its impact on clinical pathological characteristics and prognosis using TCGA and GEO datasets. Subsequently, the STRING database was utilized to explore the interacting proteins of TMOD3, followed by enrichment analysis conducted using the Metascape database. Finally, Logistic regression was used to analyze the independent risk factors for metastasis of hepatocellular carcinoma and evaluated the importance of predictive variables using ROC curves and Wald tests. Survival analysis was conducted using the Kaplan-Meier curve and the Log-rank test. Results: TMOD3 was localized to actin filaments in cells, and compared with normal tissues, the expression level of TMOD3 in liver cancer tissues is higher(P<0.05), and high expression of TMOD3 was closely related to lymph node metastasis and distant metastasis of hepatocellular carcinoma patients(P<0.05). Enrichment analysis results revealed that TMOD3 and its interacting proteins mainly function and signaling pathways related to tumor invasion and migration. Logistic regression found that TMOD3 was an independent risk factor for recurrence and metastasis of hepatocellular carcinoma(OR: 4.359, 95%CI: 1.235-15.384,P=0.022). Survival analysis revealed that high expression of TMOD3 was associated with poor OS, DFS, and RFS of hepatocellular carcinoma patients(P<0.05). Both ROC analysis and Wald test indicated that TMOD3 has good predictive characteristics for recurrence and metastasis of hepatocellular carcinoma. Conclusion TMOD3 is closely associated with the invasion and metastasis of hepatocellular carcinoma and is an independent risk factor for the recurrence and metastasis of liver cancer. TMOD3 performs well in predicting the recurrence and metastasis of hepatocellular carcinoma and has the potential to become a biomarker for predicting the recurrence and metastasis of hepatocellular carcinoma.

Objective:To investigate the mechanism of Morin hydrate(MH)on pyroptosis of alveolar epithelial cells in rats with chronic obstructive pulmonary disease(COPD)by inhibiting nucleotide-binding oligomerization domain-like receptor protein 3(NLRP3)/cysteinyl aspartate specific proteinase-1(Caspase-1)/IL-1β signaling pathway.Methods:COPD model rats were estab-lished by smoking method,which were randomly divided into model group(COPD group),low,medium and high doses MH groups(MH-L,MH-M,MH-H groups)(50,100,200 mg/kg)and positive control group(dexamethasone group,DXMS,0.09 mg/kg),another 10 healthy rats were taken as normal control group(NC group).Pulmonary function indexes[tidal volume(TV),forced vital capacity(FVC)and peak expiratory flow rate(PEF)]were measured;HE staining was used to observe pathological changes of lung tissue;pyroptosis of alveolar epithelial cells was observed by immunofluorescence double staining;levels of inflammatory factors in bronchoalveolar lavage fluid(BALF)were detected by ELISA;levels of NLRP3,Caspase-1,gasdermin D(GSDMD)and IL-1β mRNA were detected by RT-qPCR;protein expressions of SP-C,NLRP3,C-Caspase-1,GSDMD,GSDMD-N and IL-1β in lung tissue were detected by Western blot.Results:Compared with COPD group,pathological changes of lung tissue including lumen stenosis,mucus secretion and bronchial epithelial cell necrosis in DXMS group and MH groups were significantly improved,the pulmonary function indexes(TV,FVC,PEF)were increased obviously(P<0.05),and increased in turn in MH-L,MH-M,MH-H groups(P<0.05);levels of TNF-α,IL-6,IL-8,immunofluorescence expressions of NLRP3 and C-Caspase-1,and mRNA levels of NLRP3,Cas-pase-1,GSDMD,IL-1β,protein levels of NLRP3,C-Caspase-1,GSDMD,GSDMD-N and IL-1β were decreased obviously,while SP-C protein expression was gradually increased(P<0.05).Conclusion:MH can inhibit the NLRP3/Caspase-1/IL-1β signaling path-way,the release of inflammatory factors and pyroptosis by it,and alleviate lung pathological changes in COPD rats.

Objective To evaluate the diagnostic value of ischemia-modified albumin(IMA)and the crea-tine kinase(CK)index in acute ischemic stroke(AIS).Methods According to the inclusion and exclusion cri-teria,totally 149 newly diagnosed and untreated AIS patients hospitalized in Henan Provincial People's Hospi-tal from October 2021 to October 2022 were selected as the AIS group.Additionally,156 healthy people who underwent the physical examination during the same period were selected as the control group.Activity levels of IMA,CK,creatine kinase-MB(CK-MB),lactate dehydrogenase(LDH)and hydroxybutyrate-dehydrogen-ase(HBDH)were measured using the Abbott C1600 biochemical analyzer,and the CK index(ratio of CK-MB to CK)was calculated.Relative risk factors were analyzed,receiver operating characteristics(ROC)curve was constructed,data were analyzed using SPSS27.0.1,graphs were plotted using GraphPad Prism 9.4.1,and differences in area under the curve(AUC)were compared using MedCalc(version 20.0.22).Results The AIS group exhibited significantly higher levels of IMA,CK-MB,and the CK index,and significantly lower levels of CK compared to the control group(all P＜0.05).Univariate logistic regression analysis revealed that both IMA and the CK index were risk factors for AIS(both P＜0.001).After adjusting for gender and age in a multivariate binary logistic regression analysis,IMA emerged as an independent risk factor for AIS(OR=1.901,95％CI:1.649-2.190,P＜0.001).IMA,CK-MB and CK index in the AIS group were significantly higher than those in the control group,and CK levels were significantly lower than those in the control group,and the differences were statistically significant(P＜0.05).Univariate Logistic regression analysis showed that IMA and CK index were risk factors for AIS(P＜0.001).After adjusting for sex and age in multivariate binary Logistic regression analysis,IMA was an independent risk factor for AIS(OR=1.901,95％CI:1.649-2.190,P＜0.001).The ROC curve demonstrated that AUC,the sensitivity and the specificity of sin-gle detection for IMA were 0.922,81.2％,and 90.4％,respectively.There was no significant difference compared to combined detection using IMA+CK index or IMA+CK index+CK(all P＞0.05).Conclusion IMA is an independent risk factor for AIS,which has strong diagnostic value and is worthy of clinical application.

In order to deeply learn the circuit principle and typical fault analysis methods of medical electric bed,motivate and improve the independent maintenance ability of medical engineers,the functions and structures of commonly used medical multi-function electric beds were introduced.Based on the control circuit boards of 3 brands of medical multifunctional electric bed used in Nanjing BenQ Hospital,the electrical schematic diagram was drawn,the working principle was analyzed,the common faults were analyzed,and the causes and solutions of the faults were found,so as to ensure the normal operation of various brands of electric beds in the hospital,effectively control the maintenance cost,and improve the maintenance efficiency and service level.

Objective:To explore the application effect of portable device of airway humidification on patients with head and neck tumor who underwent tracheostomy.Methods:A total of 100 patients with head and neck tumors who underwent tracheostomy at Department of Head and Neck Surgery of Cancer Hospital of Chinese Academy of Medical Sciences and Peking Union Medical College from October 2021 to May 2023 were selected as the study subjects.They were randomly divided into the control group and the observation group by using a random number table method,with 50 cases in each group.The control group received conventional nebulization inhalation for airway humidification,and the observation group adopted portable device of airway humidification with 0.45%sodium chloride solution to conduct sustained airway humidification.The effect of airway humidification,occurrence of phlegm scabs,injury and bleeding of airway,tracheal tube obstruction,and comfort level of patients after surgery were observed and compared between the two groups.Results:The satisfaction rates of the patients of observation group at the 1st,2nd,3rd,4th,and 5th day after surgery were 84.0%,88.0%,92.0%,96.0%and 96.0%for humidification of wet sputum,which were better than those of control group,and the differences were statistically significant(x2=46.240,64.103,70.560,67.919,74.227,P<0.05),respectively.The formations of phlegm scabs were respectively 1,5,1 and 1 cases at the 2nd,3rd,4th,5th d after surgery in observation group,which were less than those in control group,and the differences were statistically significant(x2=7.111,23.926,21.760,17.344,P<0.05),respectively.The numbers of airway injury bleeding and overall tracheal tube obstruction at the 2nd d after surgery in the observation group were respectively 2 cases and 1 case,which were significantly less than those in the control group,and the differences were statistically significant(x2=4.000,5.982,P<0.05),respectively.The comfort levels of airway humidification and suction phlegm,and overall comfort evaluation were respectively(17.96±0.75)scores,(16.06±1.05)scores and(34.04±1.63)scores in the observation group,which all were lower than those in the control group,and the differences were statistically significant(t=9.843,17.298,15.792,P<0.05),respectively.Conclusion:The portable device of airway humidification has a significant effect on airway humidification of patients with head and neck tumors who undergo tracheostomy,which can reduce the occurrence of phlegm scabs,and reduce the number of overall tracheal tube obstruction,and improve comfort level of patient with head and neck tumors who undergo tracheostomy.

Objective To construct and preliminarily apply a graded exercise rehabilitation program for patients with acute exacerbation of chronic obstructive pulmonary disease(AECOPD),and to provide a theoretical basis for the scientific implementation of exercise rehabilitation by medical staff.Methods Based on Triangle model and evidence-based method,the first draft of the graded exercise rehabilitation program was constructed,and the items were revised through 2 rounds of expert consultations from March to October,2023.The graded exercise rehabilitation program was preliminarily applied in 10 patients with AECOPD.Results The effective recovery rates of the 2 rounds of expert consultation questionnaires were 100％;the expert authority coefficients were 0.857 and 0.863;the coefficients of variation were 0-0.285 and 0.052-0.244;the Kendall's harmony coefficients were 0.167 and 0.145,respectively(all P＜0.001).The final plan includes 4 first-level indicators,13 second-level indicators,and 25 third-level indicators.The scores of 6 min walking test,mMRC and CAT after exercise were improved compared with those before exercise,and the differences were statistically significant(all P＜0.05).Conclusion The graded exercise rehabilitation program for patients with AECOPD constructed in this study has good scientificity and practicability,which can provide references for clinical implementation of exercise rehabilitation.

Objective: To observe the association between puberty development and thyroid function among school-aged girls in Minhang District of Shanghai, in order to explore the effect of puberty development on thyroid function. Methods: The study was based on a cohort of adolescent girls recruited in iodine-suitable areas of Minhang District, and the baseline and follow-up survey have been carried out from January to March 2019. The method of phased cluster sampling was used to select one junior high school in the east, south, north and middle of Minhang District, Shanghai, respectively. Finally, 464 new junior high school girls were included in the Cohort study for physical examination, and girls were followed up from January to March 2021. The Puberty Development Scale (PDS) was used to assess the stage of puberty. Serum thyroid stimulating hormone (TSH), free triiodothyronine (FT3), and free thyroxine (FT4) were determined for each participant. Thyroid homeostasis structure parameters (THSPs) was calculated. Changes of Thyroid hormones at baseline and follow-up were compared by Wilcoxon signed rank sum test. Multiple linear regression analyses were used to evaluate the associations of thyroid hormones (THs) and THSPs changes with pubertal develepment. Results: Serum TSH levels of female studentds decreased significantly, while their FT3 and FT4 levels increased significantly during the study period ( Z=-10.53, -4.71, -12.46, P <0.01). In multiple linear regression analysis after adjustment for co-variables (including baseline age, change of BMI and waist circumference), FT4 and thyroid feedback quantile-based index (TFQI) in the higher puberty category scores changes (△PCS) group were further reduced compared with those in the low △PCS group ( β =-0.66, -0.55 ). Compared to the late puberty at baseline and follow-up (BLFL) group, FT4 and TFQI showed higher decline in the pre-puberty at baseline and late puberty at follow-up (BPFL) group with the pre-puberty at baseline and end of puberty at follow-up (BPFT) group ( β =-0.55, -0.44)( P <0.05). There were no association of △TSH, △FT3, △FT4/FT3 and TSH index changes (△TSHI) with △PCS or the puberty pattern. Conclusion Serum TSH decreases while serum FT3 and FT4 increase among girls during puberty. Both the initial stage and the velocity of pubertal development are related to thyroid hormone fluctuations.