This study was carried out to investigate the morphologic findings and process of castration-induced apoptosis in the rat prostate. The experimental group was treated with bilateral orchiectomy followed by sequential sacrifices at 1, 2, 3, 4, 5, 6, 7 days and 2, 3 weeks (6 rats, respectively). Ventral prostate was extirpated and examined by light microscopic and immunohistochemical, ultrastructural observation. Apoptotic index increased by 4 days after castration and decreased thereafter. ApopTag stain revealed brownish granular pattern in the nucleus of apoptotic cells. DNA fragmentation rate was 0.5% in the control group and began to increase by 1 day after castration and reached to 11.1% by 4 days and decreased thereafter. PCNA stain showed brownish granular pattern in the nucleus of some epithelial cells of the prostatic glands. PCNA labelling index was 2.4% in the control group and reached peak by 3 days after castration and decreased thereafter. Electron microscopically, there was chromatin condensation with margination toward the nuclear membrane by 1 day after castration. Also noted were condensation of cytoplasm, dilatation of RER and nuclear fragmentation. Apoptotic bodies were formed and phagocytosed by adjacent cells and some apoptotic bodies were found in the lumen of acini. Based on these results, it can be concluded that castration-induced prostatic involution is the result of apoptosis. Detection of DNA fragmentation with ApopTag is a more a accurate method to identify not only apoptotic body formation itself but also the previous step of apoptotic body formation. PCNA labelling index to identify the cellular proliferation seems to play an active role in the early step of apoptosis and be a good tool for investigation of apoptosis.
Animals ; Apoptosis* ; Castration ; Cell Proliferation ; Chromatin ; Cytoplasm ; Dilatation ; DNA Fragmentation ; Epithelial Cells ; Nuclear Envelope ; Orchiectomy ; Proliferating Cell Nuclear Antigen ; Prostate* ; Rats*

No abstract available.
Pancreas*

No abstract available.

No abstract available.
Abdomen* ; Humans

We report a case of calcinosis cutis following administration of 10% calcium gluconate, used for the treatment of a hypocalcemic seizure in a 5-week-old neonate. After administration of 10% calcium gluconate, subcutaneous induration developed at the infusion site. The histopathological findings taken from the dorsum of the left foot showed multiple foci of calcium deposits with infiltration of epitheloid histiocytes between collagen bundles and foreign body giant cells phagocyting calcific granules throughout the reticular dermis and subcutis.
Administration, Intravenous* ; Calcinosis* ; Calcium Gluconate* ; Calcium* ; Collagen ; Dermis ; Foot ; Giant Cells, Foreign-Body ; Histiocytes ; Humans ; Infant, Newborn ; Seizures

No abstract available.
Antigens, Surface*

No abstract available in English.
Tibia

Volume 28, No. 2, pp.89-92, Table 1 is missing.
Polymerase Chain Reaction* ; Pseudomonas*

No abstract available.
Anencephaly* ; Autopsy*

PURPOSE: To find out the characteristic MR findings of reversible posterior leukoen-cephalopathy syndrome (RPLS) due to various causes in children. MATERIALS AND METHODS: Eight children with RPLS underwent MR imaging, and the findings were retrospectively analyzed. All eight were acutely hypertensive at the time of a neurotoxic episode. Three had intra-abdominal tumors (one adrenal pheochromo-cytoma, one para-aortic paraganglioma and one para-aortic ganglioneuroma encasing the left renal artery); three were being treated with cyclosporine; one was being treat-ed with steroid; and one had hemolytic uremic syndrome. Initial cranial MR images were analyzed with particular emphasis on the distribution of the lesions. To assess possible sequelae, follow-up MR images were obtained in seven patients at least one week after the treatment of hypertension. Four underwent proton MR spectroscopy. RESULTS: Characteristic distribution of lesions in the occipital and posterior parietal lobes was identified in all cases regardless of the causes of RPLS. The cerebellum, basal ganglia, anterior parietal, and frontal lobe were involved in four, two, one, and one case, respectively. Cortical gray matter involvement was predominant in six and subcortical white matter involvement predominated in two patients. The distribution of lesions was bilateral and asymmetric. Gyriform enhancement was identified in six cases, and small hemorrhage was noted in one. In seven patients, the clinical and MR findings improved without sequelae on follow-up study. In one, proton MR spectroscopy demonstrated a high lactate peak at the time of the neurologic event. Nearnormal spectra were noted in three children who underwent proton MR spectroscopy after recovery. CONCLUSION: The MR findings of RPLS are characteristic in that lesions are distributed in the posterior region of the brain and they are reversible on follow-up study. In children with RPLS due to unknown causes, the possibility of intra-abdominal tumors should also be considered.
Basal Ganglia ; Brain ; Cerebellum ; Child* ; Cyclosporine ; Follow-Up Studies ; Frontal Lobe ; Ganglioneuroma ; Hemolytic-Uremic Syndrome ; Hemorrhage ; Humans ; Hypertension ; Lactic Acid ; Magnetic Resonance Imaging* ; Magnetic Resonance Spectroscopy ; Paraganglioma ; Parietal Lobe ; Posterior Leukoencephalopathy Syndrome* ; Protons ; Rabeprazole ; Retrospective Studies