No abstract available.
Breast Neoplasms* ; Breast*

The expression of c-fos and c-jun in the brain of the rat after capsaicin treatment was investigated by in situ hybridization, dot blot hybridization and immunocytochemical methods. Adult male Sprague-Dawley rats[200g] were used for this study. The first set of rats received a single subcutaneous injection of capsaicin[50mg/Kg] dissolved in 10% Tween-80 and 10% ethanol in saline. The rats were decapitated 1, 3, 5, 10, 24, 72 hours and 1 week after capsaicin treatment. The control set of rats were treated with saline instead of capsaicin. In situ hybridization and dot blot hybridization were carried out. O1igonucleotide probe complimentary to c-fos mRNA sequences were used for this study and labeling of oligonucleotides was accomplished using the DNA tailing kit. The expression of c-fos mRNA on the nucleus of neurons in in situ hybridization was observed throughout the brain, and was especially abundant in the olfactory cortex, nucleus of diagonal band of Broca, habenular nuclei, periaqueductal gray, parabrachial nucleus, entopeduncular nucleus, ventral posterolateral nucleus of the thalamus and cerebellum. Compared to the control rats, c-fos mRNA were increased 24 hours after capsaicin injection and gradually decreased after 72 hours, returning to the normal control level 1 week after capsaicin injection. c-fos mRNA was detected only 1 week after capsaicin injection in the various areas of the brain. The fos protein-like immunoreactivity was initially somewhat decreased at 24 hours, but increased at 72 hours and reactions was maximally observed at 1 week after capsaicin treatment. But Jun protein immunoreactivity was not increased, on the contrary, it was even decreased both in numbers of reactive cells and immunoreactivity 1 week after capsaicin injection. From the above results, c-fos gene expression was pronounced in the nucleus concerned with pain, olfaction and taste such as VPL nucleus of the thalamus, olfactory cortex and parabrachial nucleus, in the limbic system concerned with stress and emotion such as nucleus of diagonal band of Broca, periaqueductal gray and habenular nucleus, in the structure concerned with somatic motor function such as entopeduncular nucleus and cerebellum. Also, the c-fos gene was activated by the capsaicin early in the course of effects, then the fos protein increased as a results of c-fos activation. On the other hand, c-jun did not respond to capsaicin treatment early in the course, but Jun protein decreased late in the course of capsaicin effects.
Adult ; Animals ; Brain* ; Capsaicin* ; Cerebellum ; DNA ; Entopeduncular Nucleus ; Ethanol ; Genes, fos ; Habenula ; Hand ; Humans ; In Situ Hybridization ; Injections, Subcutaneous ; Limbic System ; Male ; Neurons ; Olfactory Pathways ; Oligonucleotides ; Periaqueductal Gray ; Rats* ; Rats, Sprague-Dawley ; RNA, Messenger ; Septal Nuclei ; Smell ; Thalamus ; Ventral Thalamic Nuclei

Recently, it has been postulated that diabetic autonomic neuropathy is caused by reduction in availability of nerve growth factor (NGF) in enteric nervous system. This experiments were performed to determine the changes of the distribution of enteric neuropeptide by diabetes and these changes could be prevented by administration of NGF. Sprague Dawley rats (200~250gm) were made diabetic by a single intraperitoneal injection of streptozotocin 65 mg/kg in saline. Recombinant human NGF (Sigma, Co., Ltd.) were administered at a dose of 500ng/kg subcutaneously every day for consecutive 4 weeks after streptozotocin administration. After 4 weeks, rats were anesthetized with ether and perfused with 4% paraformaldehyde. ileum was dissected and prepared by whole mount preparation method. Prepared segments were immunostained for substance p, calcitonin gene-related peptide, vasoactive intestinal peptide, and galanin by PAP technique. For the observation of the interstitial cells of Cajal, segments were immersed in Champy-Maillet solution for 2 days Results obtained were as follows: 1. In myenteric plexus of diabetic rats, substance P-like and VIP-like immunoreactivity were not changed compared with that of the control group. CGRP-like and galanin-like immunoreactivity were decreased in diabetic group and immunoreactive cells for CGRP and galanin were also decreased 18.1% (P<0.01) and 43.7% (P<0.01) respectively. 2. In NGF administerd diabetic group, immunoreactivity of substance p, VIP, galanin in myenteric plexus were slightly increased and immunoreactive cells for substancre p, VIP, galanin were almost the same as that of the control group. However, immunoreactive cells for CGRP of myenteric plexus were not changed by NGF. 3. In submucous plexus of diabetic rats, immunoreactivity of all four neuropeptides(substance p, CGRP, VIP, galanin) were decreased compared with that of the control group. Immunoreactive cells for substance p, CGRP, VIP, and galanin were also decreased in 38.8%, 77.6%, 33.0%, and 35.7%, respectively (P<0.01). 4. In NGF administered diabetic group, immunoreactivities of substance p, VIP and galanin in submucous plexus were increased and the immunoreactive cells were increased significantly compared to diabetic group. However, immunoreactive cells for CGRP of submucous plexus were not changed by NGF. 5. Interstitial cells of Cajal of diabetic group were decreased 7.4% ovoidal cells (A type) and 28.3% round cells (B type) In NGF administered group, the morphology and the number of ICC were not different to the control group. With the above results, it could be assumed that NGF prevent the damage of neurotransmitter and ICC in enteric nervous system.
Animals ; Calcitonin Gene-Related Peptide ; Diabetic Neuropathies ; Enteric Nervous System ; Ether ; Galanin ; Humans ; Ileum ; Injections, Intraperitoneal ; Interstitial Cells of Cajal ; Myenteric Plexus ; Nerve Growth Factor* ; Neuropeptides ; Neurotransmitter Agents ; Peristalsis* ; Rats* ; Rats, Sprague-Dawley ; Streptozocin ; Submucous Plexus ; Substance P ; Vasoactive Intestinal Peptide

PURPOSE: The aim of this study was to determine the role of renal ultrasonography in neonates with isolated preauricular tags. METHODS: We performed a retrospective study of 10,997 newborn infants delivered from January 1995 to June 2003 in Wonkwang University Hospital. Nineteen newborns born with isolated preauricular tags were assessed for renal anomalies by performing renal ultrasonography within one week after birth. The study group was compared with a control group of 25 healthy neonates without preauricular tags during the same period, also using renal ultrasonography. RESULTS: Preauricular tags were detected in 19 of 10,997(0.17%) neonates; 57.9% were found on the right side. Renal anomalies in neonates with isolated preauricular tags were detected in four infants (21.1%); this incidence was higher, but was not significant, compared with the control group. Types of anomalies were mild hydronephrosis of grade 1(3 cases) and 2(1 case) which were normalized within one year. CONCLUSION: Routine renal ultrasonography is not recommended for newborn infant with isolated preauricular tags.
Humans ; Hydronephrosis ; Incidence ; Infant ; Infant, Newborn* ; Parturition ; Retrospective Studies ; Ultrasonography

PURPOSE: In order to elucidate the neurotoxic mechanism of oxygen radicals which are pathological factor of ischemia, we evaluated the oxidant-induced neurotoxicity and the neuroprotective effect of antioxidant on cultured cerebral neurons derived from neonatal mouse. METHODS: Neurotoxic effect was investigated after cultured mouse neuronal cells were exposed to oxygen radicals which were generated enzymatically by reaction of xanthine oxidase (XO) and hypoxanthine (HX). And also the neuroprotective effect of antioxidant was assessed with catalase. Both effects determined by cell viability were assessesd by MTT assay and neurofilament enzymeimmuno assay (EIA). In order to see the histologic change microscopic exam also done on the cerebral neuronal cells. RESULTS: 1) Oxygen radicals were toxic on cultured mouse cerebral neurons in dose- and time-dependent manner. 2) The value of lethal concentration50 (LC50) of oxygen radicals was estimated at a concentration of 25mU/ml xanthine oxidase (XO) and 0.2mM hypoxanthine (HX) in these culture. 3) Catalase was effective in blocking the neurotoxicity induced by oxygen radicals at a concentration of 50ug/ml. 4) Oxygen radicals induced the decrease of cell number and the loss of neurites in cultured mouse cerebral neurons. CONCLUSION: It is suggest that oxygen radicals cause the neurotoxicity and the selective antioxidants such as catalase are very effective in blocking oxidant-mediated neurotoxicity on cultured cerebral neurons of neonatal mouse.
Animals ; Antioxidants ; Catalase ; Cell Count ; Cell Survival ; Hypoxanthine ; Ischemia ; Mice* ; Neurites ; Neurons* ; Neuroprotective Agents ; Oxygen* ; Reactive Oxygen Species* ; Xanthine Oxidase

PURPOSE: To evaluate neurotoxic effects induced by oxygen-radicals, which were generated by adding xanthine oxidase(XO) and hypoxanthine(HX), and protective effects of glutamate receptor antagonist such as MK-801 and 6-cyano-7-nitroquinoxaline(CNQX). METHODS: Dissociated cell cultures were prepared from cerebrum of neonatal mouse. Tissues were dissected and diced into small pieces in phosphate buffered saline and were incubated at 37degrees C. Isolated cells were resuspended in Eagle's minimum essential medium and plated poly-L-lysine coated plastic coverslips in 96 well multichambers at a cell density of 3x105 cells/well. Cells were grown in a 5% CO2/95% air atmosphere at 37degrees C. Cytotoxic effects were examined in cerebral cortical neurons cultured for 3 hours in media containing various concentration of XO and HX. The protective effects of glutamate receptor antagonist were also examined by MTT assay and neurofilament enzymeimmunoassay(EIA). Microscopic examinations were also done. RESULTS: Oxygen radicals markedly induced decrement of the cell viability of cultured mouse cerebral cortical neurons in a dose-dependent manner. Midpoint cytotoxicity value was 30mU/ml XO/0.1mM HX, when mouse cerebral cortical neurons were incubated for 3 hours with various concentrations of XO and HX. The number of cells and neurites was decreased when cerebral cortical neurons were cultured for 3 hours in a medium containing 30mU/ml XO/0.1mM HX. MK- 801 was very effective in blocking oxidant-induced neurotoxicity, while CNQX falied to show any protective effect in these cultures. CONCLUSION: It is suggested that oxygen radicals are neurotoxic, and selective N-methyl-D-aspartate antagonists such as MK-801 are very effective in protecting neurotoxicity induced by oxygen radicals in cultured cerebral cortical neurons of neonatal mouse.
6-Cyano-7-nitroquinoxaline-2,3-dione ; Animals ; Anoxia ; Atmosphere ; Cell Count ; Cell Culture Techniques ; Cell Survival ; Cerebrum ; Dizocilpine Maleate ; Excitatory Amino Acid Antagonists* ; Glutamic Acid* ; Ischemia ; Mice* ; N-Methylaspartate ; Neurites ; Neurons* ; Oxidative Stress* ; Plastics ; Reactive Oxygen Species ; Receptors, Glutamate* ; Xanthine

Authors measured the bone marrow pressure(B.M.P.) of 59 femoral heads in cases of either suspicious or diagnosed osteonecrosis and obtained the significant relationship between increased B.M.P. and the osteonecrosis. Increased bone marrow pressure provided both predictive and early diagnostic importance in even the preclinical stage of evolution of the disease, which subsequently had core biopsy proved osteonecrosis of femoral head. The results obstained were as follows; 1. Roentgenographically apperent osteonecrosis showed abnormal B.M.P. pattern, which were proved by the core biopsy. 2. In 21 cases of preclinical osteonecrosis, which did not show roentgenographic changes of osteonecrosis, measured B.M.P. parterns indicated as early stage of osteonecrosis in core biopsy at all. 3. The incidence of abnormal pressure pattern I was 51% and that of pattern II was 30%. 4. Enneking radiological staging did not correlate with the results of B.M.P. 5. The measurement of B.M.P. is relatively easy and simple method without any remarkable risk. The results of this study had great meaning in emphasizing the contribution of the bone marrow pressure measurement dianosing the preclinical stage of osteonecrosis, which had no roentgenographical changes and diagnostic symptoms.
Biopsy ; Bone Marrow ; Head ; Incidence ; Methods ; Osteonecrosis

Animal models for human chronic pain syndromes were developed and widely used for pain research. One of thsese neuropathic pain model by Kim and Chung[1992] has many advantages for operation and pain elicitation. We have examined the c-fos protein, substance P, CGRP immunoreactivity in dorsal root ganglia and dorsal horn in this neuropathic model. About 50 Sprague-Dawley rats were used for this study. L5 and L6 spinal nerve were ligated tightly to produce neuropathic pain model. After 2, 4, 8, 16, 24 hours and 1 week of surgery, rats were anesthesized and sacrificed by perfusion through the left ventricle with saline followed by 0.1M phosphate buffer[pH 7.4] containing 3% paraformaldehyde, 3% glutaraldehyde, and 0.1% picric acid. After confirmation of the roots transected by the surgery, the L5 and L6 dorsal root ganglion and spinal cord were removed and processed for immunohistochemistry. All tissue sections were immunohistochemically stained for substance P, CGRP and c-fos by using the peroxidase-antiperoxidase[PAP] method. Count the number of immunostained substance P and CGRP dorsal root ganglion cells and c-fos immunoreactive dorsal horn cells and analyzed statistically with Mann-Whitney U test. The results are as follows. 1. The number of c-fos protein immunoreactive neurons in the superficial layer of dorsal horn were increased markedly at 2 hours after operation, gradually decreased to normal level 1 week after operation. 2. The number of c-fos protein immunoreactive neurons in the deep layer of dorsal horn were gradually increased to the peak 24 hours after operation, decreased to normal level 1 week after operation. 3. The number of substance P and CGRP immunoreactive L5 and L6 dorsal root ganglion neurons were decreased markedly at 1 week after pain model operation. In conclusion, after neuropathic pain model operation, c-fos protein were immediately expressed in the superficial layer of spinal dorsal horn, thereafter c-fos protein in the deep layer of spinal dorsal horn were expressed. CGRP and substance P immunoreactive neurons were decreased markedly 1 week after neuropathic pain model operation.
Animals ; Chronic Pain ; Ganglia, Spinal* ; Glutaral ; Heart Ventricles ; Horns* ; Humans ; Immunohistochemistry ; Models, Animal ; Neuralgia ; Neurons* ; Perfusion ; Peripheral Nervous System Diseases* ; Posterior Horn Cells ; Rats* ; Rats, Sprague-Dawley ; Spinal Cord ; Spinal Nerve Roots* ; Spinal Nerves ; Substance P

Isolated fetal ascites may be different from general category of nonimmune hydrops in both prenatal course and prognosis. We experienced one case of isolated fetal ascites of unknown origin treated by in utero ultrasound-directed paracentesis and so present it with brief review of literature.
Ascites* ; Edema ; Paracentesis* ; Prognosis

Diphyllobothrium latum infection in humans is not common in Republic of Korea. We report a case of fish tapeworm infection in a 10-year-old boy after ingestion of raw perch about 8 months ago. The patient complained of recurrent abdominal pain and watery diarrhea. A tapeworm, 85 cm in length, without scolex and neck, was spontaneously discharged in the feces of the patient. The patient was treated with 15-mg/kg single dose praziquantel, and follow-up stool examination was negative after one month. There was no evidence of relapse during the next six months.
Abdominal Pain* ; Cestoda ; Cestode Infections ; Child* ; Diarrhea ; Diphyllobothrium* ; Eating ; Feces ; Follow-Up Studies ; Humans ; Male ; Neck ; Perches ; Praziquantel ; Recurrence ; Republic of Korea