Microscopy, Electron, Transmission ; methods ; Negative Staining ; methods ; Viruses ; ultrastructure

To investigate the morphogenetic process of human adenovirus type 41 (HAdV-41), 293TE cells were infected with purified wild-type HAdV-41, and ultrathin sections of infected cells were prepared and observed under a transmission electron microscope. Results showed that HAdV-41 entered host cells mainly through three ways: non-clathrin-coated pit, clathrin-coated pit, and direct penetration of plasma membrane. In addition, cell microvilli might help HAdV-41 enter cells. After entering into cells, HAdV-41 virus particles could be found in vacuoles or lysosomes or be in a free state in cytoplasm. Only free virus particles could be found near nuclear pores (NP), suggesting that the virus needed to escape from lysosomes for effective infection and viral nucleoprotein entered the nucleus through NP. Progeny viruses were as-sembled in the nucleus. Three types of inclusion bodies, which were termed as fibrillous inclusion body, condense inclusion body, and stripped condense inclusion body, were involved in HAdV-41 morphogenesis. In the late phase of viral replication, the membrane integrity of the infected cells was lost and viral particles were released extracellularly. This study reveals the partial process of HAdV-41 morphogenesis and provides more biological information on HAdV-41.
Adenovirus Infections, Human ; virology ; Adenoviruses, Human ; genetics ; growth & development ; physiology ; ultrastructure ; Cell Membrane ; virology ; Cell Nucleus ; virology ; Humans ; Virus Release ; Virus Replication

To investigate the clinicopathological features of endometrial endometrioid adenocarcinoma(EEA)with adnexal involvement.Methods The clinicopathological data of 86 EEA patients who underwent surgical treatment at our center from January 2000 to December 2015 were analyzed retrospectively.The clinicopathological features were compared between patients with occult adnexal involvement and those with gross adnexal involvement.Results A total of 86 EEA patients with adnexal involvement(mean age:58.1 years)were included in this study,accounting for 5.4%(86/1592)of the EEA patients during the same period.Among these 86 patients,there were 13 premenopausal patients(15.1%)including 2 premenopausal patients aged under 40 years.Gross adnexal involvement was found in 47 patients(54.7%),while occult adnexal involvement was found in 39 patients(45.3%)in pathology evaluation.Ovarian metastasis was found in 34 patients(39.5%),followed by both ovarian and tubal metastasis in 19 patients(22.1%)and tubal metastasis in 33 patients(38.4%).The expressionss of estrogen receptor(χ=8.086,P=0.042)and progesterone receptor(PR)(χ=9.149,P=0.026)were significantly different between gross adnexal involvement group and occult adnexal involvement group,whereas no significant difference was found in other clinicopathological features(all P>0.05).The non-conditional Logistic regression analysis showed that,compared with PR no-expression group,the rate of occult microscopic adnexal involvement in PR low-expression group was 6.375 times of that of the gross adnexal involvement(P=0.005,95%CI:1.768-22.976),and the rate of occult microscopic adnexal involvement in the PR high-expression group was 3.719 times of that of gross adnexal involvement(P=0.048,95%CI:1.009-13.702). Conclusion PR expression level is remarkably lower in EEA patients with gross adnexal involvement than those with occult adenxal involvement.

The main purpose of this paper is to explore the applicability of multivariate multilevel models for bioequivalence evaluation. Using an example of a 4×4 cross-over test design in evaluating bioequivalence of homemade and imported rosiglitazone maleate tablets,this paper illustrated the multivariate-model-based method for partitioning total variances of In (AUC) and In (C_(max)) in the framework of multilevel models. It examined the feasibility of multivariate multilevel models in directly evaluating average bioequivalence (ABE),population bioequivalence (PBE) and individual bioequivalenc (IBE). Taking into account the correlation between In (AUC) and In (C_(max)) of rosiglitazone maleate tablets,the proposed models suggested no statistical difference between the two effect measures in their ABE bioequivalence via joint tests,whilst a contradictive conclusion was derived based on univariate multilevel models. Furthermore,the PBE and IBE for both In (AUG) and In(C_(max)) of the two types of tablets were assessed with no statistical difference based on estimates of variance components from the proposed models. Multivariate multilevel models could be used to analyze bioequivalence of multiple effect measures simultaneously and they provided a new way of statistical analysis to evaluate bioequivalence.

OBJECTIVETo study the mechanisms of tongjingning granule (TJN) on primary dysmenorrhea (PD).

METHODSOne hundred and twenty PD patients were treated with TJN, and 40 patients treated with aspirin as controls. The levels of serum estrogen (E2) and progestin (P) content in the luteal metaphase and anaphase (MI/AI) as well as endothelin (ET) and calcitonin gene related peptide (CGRP) in the metaphase and menstrual stage before and after treatment in partial patients were determined.

RESULTSThe therapeutic effect , and the curative markedly-effective rate and improvement rate of main accompanied symptoms of severe and moderate PD patients in the treated group were superior than those in the control group (P < 0.01). The level of E2 and ET were significantly decreased, and the content of P and CGRP were significantly increased in the treated group after treatment respectively (P < 0.01).

CONCLUSIONJTN not only can regulate ovarian hormone, ET and CGRP, but shows advantages in adjusting spirits and emotions, improving homeostasis and consolidating the therapeutic effect.

Adolescent ; Adult ; Calcitonin Gene-Related Peptide ; blood ; Child ; Drugs, Chinese Herbal ; therapeutic use ; Dysmenorrhea ; blood ; drug therapy ; Endothelin-1 ; blood ; Estradiol ; blood ; Female ; Humans ; Phytotherapy ; Progesterone ; blood

OBJECTIVEto explore effects of airborne fine particulate matter exposure on human respiratory symptoms and pulmonary function.

METHODSone hundred and seven field traffic policemen were recruited as airborne fine particulate matter high-exposure group and one hundred and one male residents as common exposure group. The individual sampler was used to measure fine particulate matter exposure levels of the two groups. To obtain personal information, especially respiratory symptoms such as cough, sputum, etc. a questionnaire survey was used. The pulmonary ventilation function was detected: forced expiratory vital capacity (FVC), the first 1 second forced expiratory volume (FEV1.0), FVC/FEV1.0% and peak flow values (PEF), and the difference of fine particulate matter exposure level and respiratory function of the two groups was compared.

RESULTS24 h individual average fine particulate matter exposure concentration of traffic police and residents were respectively (115.4 ± 46.17) microg/m(3) and (74.94 ± 40.09) microg/m(3), the traffic police PM2.5 exposure levels were significantly higher than the residents. In the incidence of respiratory symptoms, compared with high-exposure group and common exposure group, coughing, expectoration, throat unwell, asthma, short of breath and nose discomfort, traffic police group was higher than residents group (P < 0.05). The abnormal rate of lung ventilation function indexes, such as FVC and FEV1.0 was 25.23% and 12.15% respectively in high-exposure group, 11.88% and 2.97% in common exposure group, there was no statistical difference between two groups. Besides, the abnormal rate of FVC and FEV1.0, showed rising trend in high-exposure group with seniority.

CONCLUSIONlong-term higher levels of airborne fine particulate matter exposure, may impact respiratory health and impair pulmonary function.

Adult ; Air Pollutants ; adverse effects ; Humans ; Male ; Middle Aged ; Occupational Exposure ; Particle Size ; Particulate Matter ; adverse effects ; Police ; Pulmonary Ventilation ; Surveys and Questionnaires

OBJECTIVETo explore the effect of reinforcing qi for resolving masses method (RQRMM) on expressions of extracellular signal regulated kinase 2 (MEK2) and phosphorylation extracellular signal regulated kinase (p-ERK) protein in estrogen induced uterine leiomyoma model Guinea pigs' uterine tissue.

METHODSGuinea pigs were randomly divided into five groups, i.e., the model group, the high dose group, the middle dose group, the low dose group, and the Western medicine group (mifepristone). The normal control group was set up. The uterine leiomyoma model in guinea pigs was established by castrating and subcutaneous injecting estradiol (E2). The protein expression levels of MEK2 and p-ERK of guinea pigs' uterine tissues were detected by immunohistochemical assay.

RESULTSThe protein expressions of MEK2 and p-ERK in the uterine muscular tissue of Guinea pigs' uterine tissue were higher in the model group than in the normal group (P < 0.01). They decreased to some degree in the high dose group, the middle dose group, and the low dose group. Of them, the protein expressions of MEK2 and p-ERK were significantly lower in the high dose group than in the model group and the Western medicine group (P < 0.01).

CONCLUSIONRQRMM could treat uterine leiomyoma possibly through intervening the MAPK/ERK cell signal pathway to inhibit the proliferation of myoma cells.

Animals ; Disease Models, Animal ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Estrogens ; adverse effects ; Female ; Guinea Pigs ; MAP Kinase Kinase 2 ; metabolism ; MAP Kinase Signaling System ; drug effects ; Phytotherapy ; methods ; Signal Transduction ; Uterine Neoplasms ; chemically induced ; drug therapy ; metabolism ; Uterus ; metabolism

OBJECTIVETo investigate the relationship between cell apoptosis and the quality of early mouse embryos, understand the significance of apoptosis-regulatory genes in early embryonic development, and explore a new approach to improving the embryo quality.

METHODSThe levels of cell apoptosis and proliferation in early mouse embryos in different developmental status (morphologically normal embryos, arrested embryos and fragmented embryos) were analyzed with terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL), caspase in situ fluorescence and Bcl-2 immunofluorescence, and immunofluorescent detection of proliferating cell nuclear antigen (PCNA).

RESULTSThe cells in arrested embryos and embryonic fragments showed positive results in TUNEL assay with enhanced caspase activity and lowered expressions of Bcl-2 and PCNA.

CONCLUSIONCell apoptosis in early mouse embryos may be closely related to embryonic arrest and fragmentation.

Animals ; Apoptosis ; Caspases ; metabolism ; Embryo, Mammalian ; cytology ; Female ; Mice ; Mice, Inbred Strains ; Pregnancy ; Proliferating Cell Nuclear Antigen ; metabolism ; Proto-Oncogene Proteins ; metabolism ; Proto-Oncogene Proteins c-bcl-2

BACKGROUNDCytogenetic and molecular studies of azoospermic and oligozoospermic males have suggested the presence of azoospermia factors (AZF) in the Y chromosome. Deletion in AZF regions has been reported to disrupt spermatogenesis and cause infertility. Several candidate genes responsible for spermatogenesis have been identified in this region and some of them are thought to be functional in human spermatogenesis. And we reported clinical and molecular studies of Y chromosome microdeletions in Chinese. This study aimed at assessing the frequency of microdeletions in Chinese men with idiopathic and nonidiopathic infertility problems and dicussing the clinical significance of the AZF region.

METHODSIn this study, we screened 143 infertile men (62 with idiopathic infertilitas and 81 with nonidiopathic infertilitas), in whom karyotype, sperm count, hormonal parameters and fine needle aspiration cytology were evaluated. Genomic DNA was extracted from the peripheral leukocytes. Molecular analysis was performed by two multiplex polymerase chain reactions (PCR) using a set of a sequence tagged sites (STS) from 3 different regions of the Y chromosome: AZFa (sY84, sY86), AZFb (sY127, sY134), AZFc (sY254, sY255).

RESULTSNineteen point four percent of idiopathic males (12/62, 19.4%) had microdeletions of either the AZFa, AZFb, AZFc or AZFb + c region. Significantly, a high frequency of microdeletions (9/81, 11.1%) was found in nonidiopathic patients with varicocele and cryptorchidism. No deletions were found in healthy fertile men. There were no significant differences in the localization and extent of deletions between idiopathic and nonidiopathic patients.

CONCLUSIONSThe knowledge of the presence of these deletions in idiopathic and nonidiopathic cases is important to understand the prognosis, better management and counsel these patients accordingly. Furthermore, a more extended screening for Y chromosome microdeletions in idiopathic and nonidiopathic men, particularly candidates for intracytoplasmic sperm injection, is recommended.

Chromosome Deletion ; Chromosomes, Human, Y ; Cryptorchidism ; genetics ; pathology ; Humans ; Infertility, Male ; genetics ; pathology ; Male ; Testis ; pathology ; Varicocele ; genetics ; pathology

Objective To analyze the clinical characteristics of pituitary stalk interruption syndrome (PSIS) for its better understanding. Methods The clinical manifestations and endocrine alterations were analyzed retrospectively in 2 PSIS cases, and the literatures concerning this disease were reviewed. Results Both of the 2 adult patients had definite history of head injuries, and one of them exhibited nervous system sequelae. The diagnoses remained erroneous for 15 and 2 years, respectively. This disease was characterized by gradual clinical hypopituitarism, and both of the 2 patients were admitted for pituitary crisis, which occurred for several times in 1 case;neither of the patients had diabetes insipidus. Endocrine examination suggested hypofunction of the thyroid gland, sexual gland and adrenal glands due to hypopituitarism. Magnetic resonance imaging revealed pituitary atrophy, pituitary stalk interruption and posterior lobe hyperintensity in the infundibular recess. So far only 2 juvenile cases of traumatic PSIS were reported, which had distinct differences from early-onset PSlS and from simple traumatic hypopituitarism without pituitary stalk interruption. Conclusion Traumatic PSIS is a rare clinical entity. In cases of endocrine alterations following head injury, traumatic PSIS might be suspected and appropriate treatment should be administered.