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To identify mechanisms of anabolic androgen action in muscle, we generated male and female genomic androgen receptor (AR) knockout (ARKO) mice, and characterized muscle mass, contractile function, and gene expression. Muscle mass is decreased in ARKO males, but normal in ARKO females. The levator ani muscle, which fails to develop in normal females, is also(More)
It is well established that calcitonin is a potent inhibitor of bone resorption; however, a physiological role for calcitonin acting through its cognate receptor, the calcitonin receptor (CTR), has not been identified. Data from previous genetically modified animal models have recognized a possible role for calcitonin and the CTR in controlling bone(More)
We previously generated a conditional floxed mouse line to study androgen action, in which exon 3 of the androgen receptor (AR) gene is flanked by loxP sites, with the neomycin resistance gene present in intron 3. Deletion of exon 3 in global AR knockout mice causes androgen insensitivity syndrome, characterized by genotypic males lacking normal(More)
Androgens play a key role in skeletal growth and bone maintenance; however, their mechanism of action remains unclear. To address this, we selectively deleted the androgen receptor (AR) in terminally differentiated, mineralizing osteoblasts using the Cre/loxP system in mice (osteocalcin-Cre AR knockouts [mOBL-ARKOs]). Male mOBL-ARKOs had decreased femoral(More)
Background. Colorectal cancer (CRC) is serious, yet a minority of US adults receive within-guideline screening exams. Methods. A random selection of patients attending clinics in 3 different settings completed a survey on CRC-related barriers, knowledge, and beliefs. Results. Participants with fewer barriers, better knowledge, and more positive beliefs(More)
PURPOSE Recent outbreaks of microbial keratitis have increased concerns about the efficacy of multipurpose solutions (MPS) against 'real-world' organisms. This study determined, in accordance with FDA/ISO standard methods, the effects of five MPS against clinical isolates and type strains of bacteria, and isolates of fungi from subjects' ocular structures;(More)
AIM To investigate whether local angiotensin-converting enzyme (ACE) and endogenous angiotensin II (ANG II) are involved directly in the proliferation of intra-pulmonary artery smooth muscle cells (PASMC) induced by hypoxia. METHODS Smooth muscle cells isolated from rabbit intra-pulmonary artery (300-400 microns-diameter) were cultured and used in the 3-8(More)
  • T Z Yu, C T Ma
  • Zhongguo ying yong sheng li xue za zhi = Zhongguo…
  • 2001
AIM To investigate the effects of hypoxia on the proliferation of different diameter intra-pulmonary artery smooth muscle cells (PASMCs), and to study the possible signal transduction pathway in proliferation caused by hypoxia. METHODS PASMCs were isolated from three different size of pulmonary arteries (>1 000 microm, 500-800 microm, 300-400 microm(More)
  • T Z Yu, C T Ma
  • Sheng li xue bao : [Acta physiologica Sinica]
  • 1998
In order to observe the effect of hypoxia on pulmonary artery smooth muscle cells (PASMC), angiotensin-converting enzyme (ACE) activity was measured by colometry and the expression of ACE mRNA was detected by Northern blot, using rabbit isolated and cultured PASMC. The main results are as follows: (1) under normoxia both ACE activity and gene expression(More)