No abstract available.

An experimental study on cystitis glandularis induced by vesico-rectal fistula formation in rabbit was performed, to analyze relationship between histopathologic complexity of cystitis glandularis 3rd various forms of chronic proliferative cystitis, and to evaluate the possibility that contiguous endovesical growth of intestinal mucosa through fistulous tract may partly participate in the pathogenesis of cystitis glandularis. Followings were the results: 1) Various types and stages of chronic proliferative cystitis including cystitis glandularis were de. monstrable. 2) 51.5% of animals disclosed cystitis glandularis, of both intestinal and subtrigonal types with increasing frequency and severity roughly parallel to experimental duration. Minimum requirement of duration for development was approximately 3 months. 3) Among the cases with cystitis glandularis, intestinal type comprised 52. 9% mainly affecting trigonal regions, whereas subtrigonal type of 17.6% was encountered in the bladder neck. Rest of cases interpreted as mixed type, containing both intestinal and subtrigonal varieties. 4) More than two third of cases with cystitis glandularis accompanied nests of von Brunn, cystitis cystica, squamous metaplasia and small proportion of cystitis follicularis and bullosa, with indications of development of glandular structures followed by chronic non-specific cystitis, formation of von Brunn's cell nests with central liquefaction and glandular metaplasia in order of sequence. 5) Unusually high incidence of intestinal type of cystitis glandularis in the trigonal regions could partly be explained by endocystic contiguous extension or ectopic proliferation of intestinal glands through the fistulous tract. From the above experimental design, cystitis glandularis may develop not only following consequent metaplastic mechanism but also secondary to intravesical extension of colonic mucosa through the fistulous tract. None of cases showed invasive neoplastic growth, though cellular atypism was encountered only in three instances.
Animals ; Colon ; Cystitis* ; Fistula* ; Incidence ; Intestinal Mucosa ; Metaplasia ; Mucous Membrane ; Neck ; Research Design ; Urinary Bladder

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No abstract available.
Regression Analysis*

BACKGROUND: Although the mechanism of the increase in bone resorption induced by estrogen deficiency is still controversial, recent studies have suggested that estrogen may modulate the secretion of bone resorption cytokines that are produced in the bone microenvironment and influence bone remodeling. Among them, IL-1 and TNF-a promote bone resorption by stimulating the activity of mature osteoclasts and the differentiation of osteoclast precursors and the production of these cytokines are mediated by estrogen. We performed this study to evaluate the effect of ovariectomy on bone mineral density and levels of cytokines in the culture media of bone marrow monocytes. METHODS: The experimental animals were 23 female Sprague-Dawley rats that were 8 weeks of age and weighed an average of 176.8 gm at the beginning of the study. Bilateral ovariectomy (n=13) and sham-operation (n=10) were performed in all rats from a ventral approach. Bone mineral density (BMD) of the total body and levels of IL-1 and TNF-a of culture media of bone marrow monocytes were measured before and 8 weeks after operation with using DPX-L and ELISA assay, respectively. Serum levels of LH, FSH, E2 were measured by RIA assay. RESULTS: BMD of total body was lower after ovriectomy (0.24+-0.04g/cm) than before ovariectomy (0.27+-0.03g/cm), but there was no statistically significant difference in sham-operation group. Serum levels of LH, FSH were higher after ovariectorny (0.87+-0.36 mIU/mL, 9.47+-1.26 mIU/mL) than before ovariectomy (0.10+-0.06mIU/mL, 2.09+-0.41mIU/mL) (p<0.01) and serum level of E was lower after ovariectomy (10.98+-8.71pg/mL) than before ovariectomy (7350.77+-417.29 pg/mL) (p<0.01), respectively. Levels of IL-1 and TNF-a in culture media of bone marrow monocytes were higher after ovariectomy (23.48+-3.98pg/mL, 52.64+-5.31 pg/mL) than before ovariectomy (9.72+0.94pg/mL, 24.37+-3.39pg/mL) (p<0.01), but there were no statistically significant differences in the sharn-operation group. CONCLUSION: It is possible that increased production of IL-1 and TNF-a in estrogen deficiency induced by ovariectomy occures in the bone microenvironment and these cytokines may play a critical causal role in inducing bone loss.
Animals ; Bone Density* ; Bone Marrow* ; Bone Remodeling ; Bone Resorption ; Culture Media* ; Cytokines* ; Enzyme-Linked Immunosorbent Assay ; Estrogens ; Female ; Humans ; Interleukin-1 ; Monocytes* ; Osteoclasts ; Ovariectomy* ; Rats* ; Rats, Sprague-Dawley

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No abstract available.
Ultrasonography*

No abstract available.

No abstract available.