Electrophysiological study on the modulation of uterine mechanoreceptor by substance P / 대한산부인과학회잡지

OBJECTIVE: In inflammation, hyperalgesia is a common phenomenon but its mechanism has not been clarified. Recently some reports suggested substance P might be important factors for inflammatory hyperalgesia in somatic tissue. This study was performed to see whether substance P modulate the activities of uterine afferent fibers in the hypogastric nerve of the cat. METHODS: While recording the electrical activities of nerve fibers, mechanical stimuli were applied as balloon distention using balloon inserted into uterine lumen before and during substance P infusion through uterine artery. RESULTS: Substance P increased the responses to balloon distension of uterus in 14 uterine mechanoreceptive afferent fibers of 24 over 10% compared to before substance P infusion, and decreased the responses of 3. And L-703,606, the neurokinin 1 receptor antagonist failed the modulation of mechano sensitive response by substance P and reduced the spontaneous activities. CONCLUSIONS: These results suggest that substance P modulated the activities of uterine nerve fibers and their responses to mechanical stimulus. It is hypothesized that this kind of modulation of afferent nerve fibers by substance P may be important for the development of inflammatory hyperalgesia.

A Case of Multifocal Concurrent Adenocarcinoma / 대한산부인과학회잡지

Synchronous primary tumor is uncommon form of gynecologic malignancy. Synchronous tumor is defined as primary tumor diagnosed simultaneously or within 6 months of one another. The prognosis of the patients with synchronous malignancies was reported to be more favorable when compared to the survival of patients harboring the same neoplasms individually. We report a case of multifocal concurrent adenocarcinoma involving salpinx, ovary, uterine cervix, and endometrium as well as omentum with a brief review of literatures.

Alterations in substance P and CGRP immunoreactivities in the uterus following the induction of inflammation in the rats / 대한산부인과학회잡지

OBJECTIVE: Recently some reports suggested substance P and CGRP might be important factors for inflammation and hyperalgesia. This study was performed to see whether substance P or CGRP containing nerve fibers might be changed by mustard oil-induced inflammation. METHODS: After injection of mustard oil(5%) into uterine lumen, the uteri were removed and examined with immunohistochemical methods for substance P and CGRP. RESULTS: In the normal uterus, most of the substance P- or CGRP-immunoreactive nerve fibers were observed along the vascular structure and some in the myometrium, only few in the endometrium. Mustard oil did not changed this pattern of nerve fiber distribution but after 48 hrs, the amount of substance P or CGRP immunoreactive nerve fibers were greatly reduced compared with the normal uterus. It is not clear whether the decrease of substance P and CGRP immunoreactive fibers in the uterus was resulted from the depletion of the neuropeptides in the nerve fibers or the retraction of nerve fibers. CONCLUSIONS: These results suggest that the inflammation should cause the change of nerve fibers included in the nociception. This change may attribute the generation of inflammation and inflammatory hyperalgesia.

Apoptosis in Uterine Cervical Intraepithelial Neoplasia and Cervical Carcinoma: Relationship with p53, MIB-1 and bcl-2 Expression / 대한산부인과학회잡지

OBJECTIVES: Apoptosis may play a major role in determining the growth and progression of the tumors. Certain oncogenes and tumor supressor genes are known to modulate apoptosis. The aim of study was to investigate whether apoptosis is related to the degree of differentiation, MIB-1 indicies, and expression of mutated p53 and bcl-2 in cervical neoplasms. MATERIALS AND METHODS: We examined 57 samples of normal, premalignant(i.e. mild, moderate and severe dysplasia and carcinoma in situ), malignant cervical tissue to evaluate whether differences in the apoptotic activity. Apoptotic cells and bodies were visualized by 3' end labelling. Simultaneously, quantitative immunostaining was performed for bcl-2 and p53, two known regulators of apoptosis. RESULTS: The cell proliferation index as determined by MIB-1 immunohistochemistry increased with progression from normal to cervical intraepithelial neoplasm and invasive cancer. The apoptotic index(AI) also increased with grade of lesion and was significantly associated with cell proliferation. However, the extent of apoptosis did not correlate with the expression of p53 and bcl-2. CONCLUSIONS: These results suggest that the elevation of AI in cervical neoplasm is associated with cell proliferation activity but is independent of the expression of p53 and bcl-2. It is likely that the effects on apoptosis of bcl-2 and p53 are countered by those of other oncogene products and/or additional factors that regulate apoptosis in vivo.

Transitional Cell Carcinoma of the Ovary / 대한산부인과학회잡지

Transitional cell carcinoma of the ovary is extremely rare tumor and the category of transitional cell carcinoma has been proposed for those tumors in which definite urothelial features are present but no benign, metaplastic, and/or proliferating Brenner tumor is identified. We report a case of primary transitonal cell carcinoma of the ovary in 48-year old woman who presented with low abdominal pain and dyspepsia. Brief literature was reviewed about the features of its behavioral aggressiveness and characteristic chemosensitivity.