Shucheng Zhang

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BACKGROUND/PURPOSE The purpose of this experiment was to identify the neurons in the lumbosacral spinal cord involved in colon-rectal function and to compare normal and anorectal malformation of fetal rats. METHODS The authors quantified the sacral parasympathetic nucleus (SPN) innervation of the rectum by Fluorogold (FG) (Fluorochrome, Englewood, CO)(More)
BACKGROUND & AIMS Spina bifida occulta (SBO) is a common developmental variant. The aim of this study was to re-examine the possible association between SBO and constipation in children. METHODS A total of 113 children with constipation underwent plain abdominal radiography, anorectal manometry, neurophysiologic study, electromyography testing, and(More)
BACKGROUND Sperm head vacuoles are easily detectable in human spermatozoa under the electron microscope. A sperm head vacuole is considered abnormal when it exceeds 20% of the head's cross-sectional area. The authors report a rare case of primary spermatozoa deformity with 100% vacuolated head and evaluate the correlation between presence of head(More)
AIM In this study, we aimed to establish a mouse model of repeated medical termination of pregnancy in order to determine subsequent outcomes. METHODS A model of mifepristone (RU 486)-induced medical abortion was established in BALB/c mice to facilitate the investigation of the impact of medical abortion on subsequent pregnancies, including litter sizes(More)
The role of prostaglandins (PGs) in menstruation has long been proposed. Although evidence from studies on human and nonhuman primates supports the involvement of PGs in menstruation, whether PGs play an obligatory role in the process remains unclear. Although cyclooxygenase (COX) inhibitors have been used in the treatment of irregular uterine bleeding, the(More)
Progesterone withdrawal triggers endometrial breakdown and shedding during menstruation. Menstruation results from inflammatory responses; however, the role of reactive oxygen species (ROS) in menstruation remains unclear. In this study, we explored the role of ROS in endometrial breakdown and shedding. We found that ROS levels were significantly increased(More)
Primary ectopic meningioma is rare and usually limited to the head and neck region. Until now its occurrence in the mediastinum has not been reported in the literature searched on Medline using the keywords meningioma and mediastinum. We report here a case of primary mediastinal malignant meningioma which was treated by surgical resection and additionally(More)
Background: Although there is much literature on adolescent suicide, combined effects of depression and anorexia nervosa on suicide were rarely investigated. The aims of this study are to examine the association between anorexia nervosa and suicidal thoughts and explore the interaction between anorexia nervosa and depression. Methods: This is a(More)
Mifepristone is a synthetic steroid compound that has been applied to terminate early pregnancy for many years. However, about 15% of the women undergo failure in termination of early pregnancy, the causes of which remain largely unknown. We herein selected estrogen receptor 1 gene (ESR1) as a candidate gene to determine whether single nuclear polymorphisms(More)
STUDY QUESTION How is vascular endothelial growth factor (VEGF) expression regulated by hypoxia inducible factor 1 alpha (HIF1A) during menstruation? SUMMARY ANSWER After progesterone (P4) withdrawal, HIF1A was activated and it directly up-regulated VEGF mRNA expression and this regulation was the highest during endometrium breakdown in the mouse(More)