Objective To detect the expression of Bmi-1 and p16 gene in transitional cell carcinoma of bladder(TCC) tissue and explore its clinical significance.Methods The expression of Bmi-1 and p16 gene were detected by real-time quantitative polymerase chain reaction in 61 cases of TCC tissue and 12 cases of normal bladder tissue.Results The expression of Bmi-1 gene in TCC tissue was significantly higher than that in normal bladder tissue (0.242 ± 0.129 vs.0.031 ± 0.011),and the expression of p16 gene was significantly lower than that in normal bladder tissue (0.059 ± 0.021 vs.0.165 ± 0.029),there was significant difference (P ＜ 0.05).The expression of Bmi-1 and p16 gene were highly correlated with pathological grades,clinical stages and tumor recurrence (P ＜ 0.05 or ＜ 0.01).But there were not correlated with age and gender (P ＞ 0.05).There was a negative correlation between the expression of Bmi-1 gene and p16 gene in TCC tissue(rs =-0.714,P＜ 0.05).Conclusions Bmi-1 gene high expression and p16 gene low expression may be involved in the occurrence and development process of TCC.Bmi-1 may decrease the expression of p 16 gene in some ways,and then lead to the occurrence and development of TCC.

Objective To establishing an immortal cell line of familial papillary thyroid carcinoma (FPTC), and explore a new approach for studying familial non-medullary thyroid carcinoma (FNMTC). Methods The specimen from a patient with FPTC was selected, separated, and the primary cells were cultured using DMEM/F12 medium (with TSH, T3, EGF and hydrocortisone). To inducing cell immortalization, the exogenous genes SV40T/TERT were transfected into cells by two ways. RT-PCR was used to detect the expressions of thyroid peroxidase (TPO), thyroid globulin (TG), thyroid stimulating hormone receptor (TSHR) and sodium/iodide co-transporter (NIS). Immunofluorescence method was used to detect the expressions of TPO and GPC3. In order to detect the genomic mutations, the peripheral blood DNA of the patient was extracted. The cell genome was detected. Results The FPTC cells adhered to the plate and showed an irregular polygon shape. The cells can stably grow for six months, FPTC-S (with SV40T transfected) passaged to p26, FPTC cells passaged to p23 and FPTC-ST (with SV40T/TERT transfected) passaged to p19. Both FPTC-S and FPTC-ST can stably express TPO, TG and TSHR in mRNA level. MLH1 R217C mutation existed in the peripheral blood of the patient, and BRAF V600E mutation existed in the primary cultured cells. Either the primary or the immortal cells showed MLH1 R217C mutation. Conclusion This study preliminarily established an immortal cell line of familial papillary thyroid carcinoma with MLH 1 R217C and BRAF V600E mutations. This cell line provides a research model for studying these mutations in FPTC.

Objective:To determine whether the transepidermal water loss rate (TEWL) is correlated with the stratum corneum (SC) hydration level.Methods:Healthy children aged ≤ 17 years were enrolled from Medical Center for Public Health of Puning, 2 kindergartens and 2 primary schools, from October 2021 to June 2022. TEWL and SC hydration levels were measured on the left forearm and right anterior shank using a device for measuring skin physiological funcitons. Pearson correlation analysis was used to determine the correlations between TEWL and SC hydration levels in children of different ages and genders.Results:A total of 1 396 healthy children were enrolled, aged from 1 month to 17 years. Among them, 783 were male children and 613 were female children. In children aged 1 to < 12 months, no correlation was observed between TEWL and SC hydration levels on the forearms of male children, while TEWL was positively correlated with SC hydration levels on the anterior shanks of male children, as well as on the forearm and anterior shanks of female children ( r = 0.283, 0.404, 0.420, respectively, all P < 0.05) . In children aged 1 to 2 years, positive correlations were observed between the above two indicators on the anterior shanks of male children and forearms of female children ( r = 0.370, 0.419, respectively, both P < 0.01) , while there were no correlations between the two indicators on the anterior shanks of female children or forearms of male children. Positive correlations were observed between TEWL and SC hydration levels on both the forearms and anterior shanks of female children and the forearms of male children aged 3 to 5 years and 6 to 11 years ( r values ranging from 0.172 to 0.293, all P < 0.05) , but not on the anterior shanks of male children aged from 6 to 11 years. The group aged 12 to 17 years exhibited significantly positive correlations between TEWL and SC hydration levels on both the anterior shanks and forearms of male and female children ( r values ranging from 0.269 to 0.485, all P < 0.001) . Conclusion:SC hydration levels are positively correlated with TEWL on the anterior shanks and forearms of healthy children, and the degree of correlation tends to increase with age.

Public hospitals play an important role in independent innovation of basic medicine and clinical medicine. As key players in translation of medical research achievements, they play a pivotal role in promoting the development of medical sciences. At present, these hospitals however, are faced with challenges in the translation, namely system defects, unclear property rights ownership, misleading research project goals, defective assessment mechanism, insufficient funding, and lack of translation channels. In such considerations, the authors suggested based on their experiences to improve the translation system of scientific research achievements, set up special departments for translation, clarify the rights to use and dispose of scientific research achievements and that to yields. They also proposed to actively guide the establishment of clinical application projects, improve the evaluation mechanism, and broaden channels of funding. These measures are expected to accelerate the translation of scientific research achievements.

Objective:In this study, we compared the funding rates of applicants who participated in the expert preliminary counseling with those who did not, to explore the role of the expert preliminary counseling in improving the funding rate of the National Natural Science Fund, so as to provide further reference for the management of scientific research.Methods:Statistical methods was used to analyze relevant data from 2012 to 2019 to compare the approval and funding rate of the applicants that participated in and did not participate in the expert preliminary counseling using.Results:From 2012 to 2019, the proportion of funded applicants in the expert preliminary counselling group was 30.45%, and the overall funding rate was 18.51%. Under the same research basis, the funding rate of the group was 29.91%, which was significantly higher than the group did not participate in the expert preliminary counselling (funding rare: 13.59%, P<0.001). Conclusions:We should pay more attention to and participate actively in the expert preliminary counselling, which can increase the quality of the projects and improve their funding rate significantly.

It has been speculated that dry skin results from dysfunction of epidermal permeability barrier. But so far, there is no sufficient evidence to support this speculation. In fact, dry skin indicates low levels of stratum corneum hydration. Stratum corneum hydration levels are primarily determined by the content of natural moisturizers in the skin, while epidermal permeability barrier is mainly regulated by intercellular lipids and structural proteins in the stratum corneum. If dry skin is due to a defective permeability barrier, stratum corneum hydration levels should be inversely correlated with transepidermal water loss (TEWL) , an indicator of epidermal permeability barrier function. But no negative correlation has been demonstrated between stratum corneum hydration levels and TEWL in either normal human skin, ichthyoses lesions of patients, or sebaceous gland-deficient mice in a number of studies. In contrast, a positive correlation between stratum corneum hydration levels and TEWL was observed in normal human skin. Taken together, a line of evidence suggests that dry skin unlikely indicates epidermal permeability barrier dysfunction.

Stem cells are a class of undifferentiated cells with high self⁃renewal and rapid proliferative capabilities. Undercertain conditions, stem cells can induce differentiation into other tissue cells of the human body, such as skeletal muscle cells, cardiomyocytes, osteoblasts, and nerve⁃like cells. In recent years, with the development of tissue engineer⁃ ing and regenerative medicine, stem cells have been extensively used in various fields of regenerative medicine as opti⁃ mal seeded cells; however, there are still some problems, such as the decreased cell survival rate and regenerative ca⁃ pacity after transplantation, immune rejection, and ethical supervision. Therefore, it is difficult to universally and safely use stem cell banks for regeneration applications. The paracrine effect of stem cells has been extensively studied since its discovery. Increasing evidence supports the view that stem cells act in paracrine manner, and the secretion of exo⁃ somes plays a vital role in their biological functions. Exosomes are nanoscale extracellular vesicles containing biological⁃ ly active molecules such as RNA and proteins; they possess similar functions to stem cells and play important roles in cell communication, immune response, and repair of tissue damage. At present, clinical studies on stem cell exosomes in tissue engineering and regenerative medicine have also been carried out in the fields of bone and cartilage repair, nerve tissue regeneration, liver tissue regeneration, skeletal muscle tissue engineering, vascular regeneration, taste bud repair, tooth regeneration, etc. In this paper, the composition, formation, release and identification of exosomes are intro⁃ duced in detail. The research status of exosomes from different stem cell sources in tissue engineering and regenerative medicine is described, and their broad application prospects are discussed.

Objective To verify the change of the anxiety and depression of patients anteriorposterior treatment at paraurethral duct dilitation after gonococcal infection of paraurethral duct.Methods Twenty-eight patients of paraurethral duct dilatation after male gonococcal infection of paraurethral duct were enrolled,and the patients were treated in the Department of Dermatology and Venerology,the First People's Hospital of Changshu City.The anxiety and depression of patients anteriorposterior treatment were assessed and compared with Hamilton depression scale and Hamilton anxiety scale.Results The total scores of Hamilton depression scale and Hamilton anxiety scale before treatment were positively correlated with course of disease (r =0.481,P =0.0095;r =0.549,P =0.0025).The total scores of Hamilton depression and anxiety before treatment were from 1 to 31 (18.9±7.5) and from 4 to 30 (14.9±6.8).The symptoms of depression and anxiety appeared in 11 patients and 15 patients respectively.The total scores of Hamilton depression andanxiety after treatment were from 0 to 8 (4.3±1.7) and from 0 to 8 (3.3±1.7).There was no symptom of depression and anxiety.The difference of the total score of Hamilton depression and anxiety before and after treatment had statistical significance (t =12.270,P＜0.001,t =10.626,P＜0.001).The difference of positive rate of depressive and anxious symptom before and after treatment had statistical significance too (x2 =9.05,P=0.003;x2 =13.06,P=0.000).Conclusions The sequelae of gonococcal paraurethral duct infection in male paraurethral duct dilatation can result in the anxiety and depression of patients,which should be treated.Effective therapy can relieve or cure the anxiety and depression of patients without the assistance of psychotropic drugs.

: Objective: To investigate the effects of ezrin enhancer knockout on ezrin gene expression, cell proliferation and migration of human esophageal carcinoma Eca-109 cells. : Methods: The CRISPR/Cas9 recombinant plasmids targeting upstream/downstream of human ezrin enhancer were co-transfected into human esophageal carcinoma Eca-109 cells, and the cell line Eca-C2 with ezrin enhancer knockout was screened by purinomycin. Then the expression levels of ezrin mRNAand protein in Eca-C2 cells were detected by Real-time quantitative PCR (qPCR) and Western blotting, respectively; The expression levels of MAPK-pathway-related proteins were detected by protein array technology; and the effects of ezrin enhancer knockout on the proliferation and migration of Eca-C2 cells were analyzed by WST-1 method and wound-healing assay, respectively. : Results:The human esophageal carcinoma cell line Eca-C2 with stable ezrin enhancer knockout was established successfully. Compared with control cells, the mRNA and protein expressions of ezrin in Eca-C2 cells were significantly reduced (all P<0.05).Among the 17 detected MAPK pathway related proteins in Eca-C2 cells, 9 proteins (AKT, CREB, GSK3b, MKK6, mTOR, P38, P53, P70S6K and RSK1) were down-regulated, and the cell proliferation and migration were significantly inhibited (all P<0.05). Conclusion: ezrin enhancer knockout can significantly inhibit the cell proliferation and migration of human esophageal carcinoma Eca-109 cells.

Derived from the neural crest, dental stem cells (DSCs) are a population of cells with the characteristics of mesenchymal stem-ness, which under certain appropriate conditions can differentiate into multiple cells such as osteocytes, chondrocytes, hepatocyte and neuronal-like cells. DSCs are consist of odontogenic stem cells mainly include dental pulp stem cells, periodontal ligament stem cells, stem cells from deciduous teeth, stem cells from apical papilla, as well as dental follicle progenitor cells. DSCs have been widely used in the field of regenerative medicine research and preclinical research, including nervous system diseases, oral diseases, immune diseases, heart and lung diseases, etc. This review will focus on the storage of DSCs and current translational and clinical studies regarding DSCs in tissue regeneration.