Objective To evaluate the migrating regulation and ultrastructure of the corneal epithelial stem cells in human fetuses. Methods We examined the corneal cryosections of 14-38 weeks of gestation. Hematoxylin-eosin staining showed the stratified corneal epithelium and the corneal epithelial stem cells were localized by mouse monocolonal antibody against human 64-kilodalton keratin (mAE5), and the ultrastructure of the corneal epithelial stem cells was observed. Results At 14 weeks of gestation, the corneal epithelium was composed of a single basal cells layer and 1-2 superficial squamous cells layers. Some superficial squamous cells were mAE5 positive in the limbus as well as the central and peripheral cornea. At 17-29 weeks of gestation, the limbus epithelium developed from 3 to 5 cells layers and the central region from 2 to 3 cells layers. mAE5 positive cells were found in the suprabasal layers of all 3 regions examined but not in the basal layer. At 33-38 weeks of gestation, the corneal epithelium consisting of 4-6 cells layers was morphologically mature. mAE5 immunoreaction showed the negative cells were confined to limbus basal layer. The ultrastructure of basal layer cells showed they had more heterochromatin in the nucleus, less organells in the cytoplasm and less desmosomes among them. Conclusion The migration of corneal epithelial stem cells in the human fetuses was from the whole layers to basal layer and confined to limbus region finally, and their ultrastructure was immature.

The advent of human infections with avian influenza A(H7N9)and the emerging communicable disease has brought us profound thoughts on lemology teaching recently. We analyzed the exiting challenges of lemology teaching, including great changes in communicable diseases com-posing but limited class hours, decreasing of communicable diseases cases, medical students' psycho-logical apprehension, lack of teachers, more and more requirements in the prevention and treatment for communicable diseases from the public, etc. Several suggestions on how to further improve the lemology teaching quality were proposed including adjusting the curriculum arrangement, paing atten-tion to accumulate teaching cases, applying multi-media materials, taking full advantage of the teach-ing cases from specialized hospital, teaching students knowledge about themselves protection, improv-ing the quality of young teachers, emphasizing discipline characteristics and the importance of public health, reforming the teaching method and promoting the effect of teaching in communicable diseases.

Objective: To explore the relationship between expressions of estrogen (ER) and progesterone (PR) receptors and syndromes of traditional Chinese medicine (TCM) in gastric carcinoma and to establish prognostic indicators for gastric carcinoma. Methods: A total of 72 patients with gastric carcinoma were divided into six groups according to TCM syndrome differentiation. Specimens were collected after operation and ER and PR protein expressions were detected by EnVision immunohistochemical method. Results: The common syndromes in female patients with gastric carcinoma were disharmony between liver and stomach, yin impairment due to stomach heat, and insufficiency of both qi and blood; while in males, interior retention of stagnant toxin, interior retention of phlegm and dampness, and deficiency-cold in spleen and stomach were common. Different TCM syndromes were related with gender (P<0.01), pathology (P<0.01), cell differentiation (P<0.05), infiltration depth (P<0.01), lymphaden metastasis (P<0.05), distant metastasis (P<0.05), and TNM stage (P<0.01). Deficiency and excess syndromes were associated with gender (P<0.05), pathology (P<0.05), tumor location (P<0.01) and TNM stage (P<0.05). The deficiency syndromes were common in female patients. The total positive rates of ER and PR expressions were 8.33% and 37.5% respectively. There was a significant difference in PR expression among different TCM syndromes (P<0.01). PR expression was significantly higher in the syndrome of yin deficiency due to stomach heat than in the other syndromes. The PR expressions in deficiency syndromes were significantly higher than those in excess syndromes (P<0.01). No correlation was found between ER expression and different TCM syndromes. Conclusion: There is a correlation between PR expression and different TCM syndromes in gastric carcinoma.

Viral myocarditis (VMC) is normally caused by myocarditis virus infection. Currently, the Western medicine treatment is mainly about symptomatic supportive treatment, while TCM has remarkable efficacy for this disease. This article started from the 4 common mechanisms of VMC, and elaborated the effects of individual and compound preparation, such as antiviral, regulating immune, anti free redical, antioxidation, improving myocardial metabolism, protecting myocardial cells, with a purpose to provide experimental references for TCM application in clinic.

OBJECTIVE: To investigate the epidemiological features in patients with allergic rhinitis (AR) in Yichang city, and put forward effective prevention and control measures. METHOD: Collecting the data of allergic rhinitis in city proper from 2010 to 2013, input the data into the database and used statistical analysis. RESULT: In recent years, the AR patients in this area increased year by year. The spring and the winter were the peak season of onset. The patients was constituted by young men. There was statistically significant difference between the age, the area,and the gender (P < 0.01). The history of allergy and the diseases related to the gender composition had statistical significance difference (P < 0.05). The allergens and the positive degree in gender, age structure had statistically significant difference (P < 0.01). CONCLUSION Need to conduct the healthy propaganda and education, optimizing the environment, change the bad habits, timely medical treatment, standard treatment.
Allergens ; China ; epidemiology ; Female ; Humans ; Male ; Rhinitis, Allergic ; epidemiology ; Seasons

OBJECTIVETo observe antisepsis, anti-swelling, and therapeutic effects of Fuxiye (FXY), a Chinese medical lotion for external wash in treating vaginitis model rats.

METHODSThe cervicitis rat model was induced by agar plate diffusion, ear auricle swelling induced by dimethylbenzene, and chemical stimulus. The in vitro antibiotic actions of FXY were observed. Besides, its effects on the swelling and inflammation in model rats were also observed.

RESULTSFXY at 25 mg/mL could completely inhibit the growth of Pseudomonas aeruginosa, Escherichia coli, pyogenic Streptococcus, and Streptococcus agalactiae. FXY at 50 mg/mL could completely inhibit the growth of Staphylococcus aureus and Candida albicans. It obviously restrained dimethylbenzene induced ear auricle swelling. It significantly alleviated cervicitis induced by chemical stiumli.

CONCLUSIONFXY showed better effects on antisepsis, anti-inflammation, and treating cervicitis.

Animals ; Anti-Infective Agents ; administration & dosage ; pharmacology ; Anti-Inflammatory Agents ; administration & dosage ; pharmacology ; Dosage Forms ; Drugs, Chinese Herbal ; administration & dosage ; pharmacology ; Female ; Rats ; Rats, Sprague-Dawley ; Uterine Cervicitis ; drug therapy ; Vaginitis ; drug therapy

OBJECTIVETo evaluate the cardioprotective effects of dexrazoxane (DEX) on breast cancer patients who received anthracycline-containing chemotherapy.

METHODSA total of 122 breast cancer patients after operation were randomly divided into two groups: The experimental group of 61 cases treated with EPI plus DEX (DEX:EPI = 10:1) as adjuvant chemotherapy regimen, and the control group of 61 cases treated with EPI but without DEX. All patients received four cycles of adjuvant chemotherapy and their changes of specific cardiac functional status and hematology status before and after chemotherapy, as well as non-cardiac toxicity were observed and analyzed.

RESULTSBrain natriuretic peptide (BNP) before chemotherapy and after four cycles of chemotherapy in the control group was (106.78 ± 4.52)×10(-6) µg/ml and (187.19 ± 8.71)×10(-6) µg/ml, respectively, with a significant difference between them (P < 0.05). It in the experimental group was (102.34 ± 8.76)×10(-6) µg/ml and (105.29 ± 7.21)×10(-6) µg/ml, respectively, without a significant difference (P > 0.05). Cardiac troponin T (cTnT) before chemotherapy and after four cycles of chemotherapy in the control group was (12.55 ± 2.73)×10(-3) µg/ml and ( 31.05 ± 7.10 )×10(-3) µg/ml, respectively, with a significant difference between them (P < 0.05). It in the experimental group was (12.70 ± 2.15)×10(-3) µg/ml and (13.65 ± 7.82)×10(-3) µg/ml, respectively, without a significant difference (P > 0.05). The hart rate (HR) before chemotherapy and after four cycles of chemotherapy in the control group, was 75.32 ± 7.14 bpm and 89.60 ± 9.21 bpm, respectively, with a significant difference (P < 0.05). It in the experimental group was 78.60 ± 6.29 bpm and 83.10 ± 7.56 bpm, respectively, without a significant difference (P > 0.05). The left ventricular ejection fraction (LVEF) before chemotherapy and after four cycles of chemotherapy in the control group was (65.23 ± 7.82)% and (55.21 ± 7.23)%, respectively, with a significant difference between them (P < 0.05). It in the experimental group was (64.12 ± 6.25)% and (59.6 ± 4.72)%, respectively, without a significant difference (P > 0.05). The absolute neutrophil count before chemotherapy and after four cycles of chemotherapy in the control group was (3.95 ± 1.36)×10(9)/L and (3.50 ± 1.52)×10(9)/L, respectively, without a significant difference (P > 0.05). It in the experimental group, was (4.96 ± 1.41)×10(9)/L and (3.10 ± 1.26)×10(9)/L, respectively, with a significant difference (P < 0.05). The incidence of grade I-IV bone marrow suppression in the experimental group was 21.3%, 16.4%, 24.6%, and 4.9%, respectively. It in the control group was 16.4%, 11.5%, 9.8%, and 5.5%, respectively, with a significant difference (P < 0.05).

CONCLUSIONSCardiac toxicity after anthracycline treatment in breast cancer patients may be significantly reduced by DEX, without increase of non-cardiac and and non-hematologic toxicity. DEX combined with anthracycline increases the risk of bone marrow suppression, therefore, peripheral blood picture should be monitored or routine bone marrow support may be needed.

Adolescent ; Adult ; Aged ; Antibiotics, Antineoplastic ; adverse effects ; therapeutic use ; Bone Marrow ; drug effects ; Breast Neoplasms ; drug therapy ; metabolism ; pathology ; physiopathology ; surgery ; Cardiovascular Agents ; adverse effects ; therapeutic use ; Chemotherapy, Adjuvant ; Epirubicin ; adverse effects ; therapeutic use ; Female ; Follow-Up Studies ; Heart Rate ; drug effects ; Humans ; Leukocyte Count ; Middle Aged ; Natriuretic Peptide, Brain ; metabolism ; Neutrophils ; cytology ; Razoxane ; adverse effects ; therapeutic use ; Stroke Volume ; drug effects ; Young Adult

Objective:To research the occurrence regularity and influencing factor of acute moderate and severe abdominal pain after radiofrequency ablation (RFA).Methods:Cross-sectional study was used to collect patients with primary liver cancer treated by RFA from January 2019 to July 2020 in a hospital. The patients were divided into abdominal pain group ( n=35) and non -pain group ( n=133). The data of 2 groups was analyzed by univariate analysis. The statistically significant factors were analyzed by multivariate Logistic regression analysis, and to explore the risk factors. Results:A total of 168 patients were enrolled in this study; Multiple liver tumors (the number of tumors≥3), lager focus diameters (diameter≥3cm) and a history of pain after RFA were independent predictors of acute moderate and severe abdominal pain ( χ2 values were 21.713, 17.454, 7.953, P<0.01). Conclusion:The incidence of acute moderate and severe abdominal pain after RFA is high. Evaluating risk factors can provide reference for postoperative pain management.

BACKGROUNDDiabetic macrovascular complications are important causes of cardiovascular and cerebrovascular diseases and also one of the major causes of morbidity and mortality in patients with type 2 diabetes mellitus (T2DM). Phlorizin has been reported to be effective in reducing the blood glucose level in diabetic mellitus, while little is known about its effects on vascular complications. This study aimed to observe the effects of phlorizin on the aorta of diabetes db/db mice and explore its mechanism.

METHODSDiabetic db/db mice (n = 16) and age-matched db/m mice (n = 8) were divided into three groups: normal control group (CC group, db/m mice, n = 8), untreated diabetic group (DM group, db/db mice, n = 8) and diabetic group treated by phlorizin (DMT group, db/db mice, n = 8). Phlorizin (20 mg/kg body weight) was given in normal saline solution intragastrically for 10 weeks. Animals were weighed weekly. At the 10th weekend, all mice were fasted overnight and then sacrificed. Fasting blood was collected, and the aortas were dissected. The blood samples were analyzed for fasting blood glucose (FBG), serum advanced glycation end products (AGEs), malondialdehyde (MDA) and superoxide dismutase (SOD) activity, the aortic ultrastructure was studied.

RESULTSThe weight and serum concentration of FBG, AGEs, and MDA in the DM group were higher than that in the CC group (P < 0.01), and they were significantly lower in the DMT group (P < 0.05). Serum SOD activity was lower than that in the CC group (P < 0.01), and it is significantly higher in the DMT group (P < 0.05). The severity of aorta damage in the DMT group was less than that in the DM group.

CONCLUSIONSPhlorizin protected the db/db mice from diabetic macrovascular complications, attributed to the decreasing of blood glucose and AGEs level, and its antioxidant potential. This study may provide a new natural medicine for treating diabetic macrovascular complications.

Animals ; Aorta, Thoracic ; pathology ; Blood Glucose ; analysis ; Diabetic Angiopathies ; drug therapy ; pathology ; Glycation End Products, Advanced ; metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Phlorhizin ; therapeutic use ; Superoxide Dismutase ; metabolism

OBJECTIVETo investigate the in vitro effect of HSV-tk/GCV using a hTERT promoter-driven vector system on Skov3 ovarian cancer cells.

METHODSAn expression vector (pBTdel-279-tk) containing tk gene under the hTERT promoter was constructed by molecular biological methods, and then was transfected into Skov3 ovarian cancer cells, normal ovarian epithelial cells (NOEC) and human embryonic lung fibroblast by cationic liposome. Following the transfection with tk, GCV was added, and MTT and flow cytometry methods were applied to investigate its antitumor effect. RT-PCR was used to detect the tk gene in ovarian cancer cells and normal cells after the transfection of pcDNA3-tk or pBTdel-279-tk.

RESULTSpBTdel-279-tk/GCV system induced apoptosis in hTERT-positive ovarian cancer cells, but not in hTERT-negative normal ovarian epithelial cells and fibroblasts. The hTERT promoter system was almost as efficient in inducing cancer cell death as the CMV promoter. tk gene was expressed in Skov3 cells and NOEC after pcDNA3-tk transfection, while positive was only in ovarian cancer cells after pBTdel-279-tk transfection.

CONCLUSIONThe telomerasespecific transfer of the tk gene under the hTERT promoter is a novel targeting approach for the treatment of ovarian cancer and may lead to an effective and specific gene therapy.

Apoptosis ; genetics ; Cystadenocarcinoma, Serous ; genetics ; pathology ; DNA-Binding Proteins ; Female ; Ganciclovir ; pharmacology ; Genetic Therapy ; Humans ; Ovarian Neoplasms ; genetics ; pathology ; Promoter Regions, Genetic ; genetics ; Simplexvirus ; genetics ; Telomerase ; genetics ; Thymidine Kinase ; genetics ; Transfection ; Tumor Cells, Cultured