No abstract available.
Animals ; Dogs* ; Neurons*

No abstract available.
DNA Breaks, Double-Stranded/radiation effects ; Humans ; Radiation Injuries/*etiology ; Radiation Protection/instrumentation ; Radiation, Ionizing ; Radiotherapy Dosage ; Tomography, X-Ray Computed

BACKGROUND: In recent years, estrogen has also been shown to modulate the development and function of the brain, bur not exclusively in areas involved with sexual behavior. Among the most novel and fascinating effects of estrogen are those on cognitive function and memory process and their alterations during aging and neurodegenarative disease like Alzheimer. Estrogen receptors distributed not only in the hypothalamus but many different areas, like cerebral cortex, hippocampus, basal forebrain, midbrain, spinal cord, and the diverse action of estrogen is supported by this fact. Numerous studies suggest thai estrogen may be beneficial in preserving cognitive function, but it is not clear yet. PURPOSE: In this study, we perform the immunohistochemical staining in the hippocampus of normal aged rat, and show the distribution of estrogen receptor compared with the neonatal rat. METHODS: we have used antibodies against a estrogen receptor(ER)-alpha to determine their distribution in neonatal and aged SD rat hippocampus. RESULTS: In neonatal rat hippocampus, ER-alpha immunoreactivity was observed in the nucleus of Purkinje cells, whereas in aged rat hippocampus, ER-a immunoreactivity was found mainly in the cytoplasm of Purkinje cells. CONCLUSION: We showed the age related intracellular differential distribution of ER-alpha immunoreactivity in the rat hippocampus. But, further investigations are required to establish whether functional relations like cognitive ability exist with this different intracellular expression of ER-alpha immunoreactivity.
Aging ; Animals ; Antibodies ; Asian Continental Ancestry Group ; Brain ; Cerebral Cortex ; Cytoplasm ; Estrogens* ; Hippocampus* ; Humans ; Hypothalamus ; Memory ; Mesencephalon ; Prosencephalon ; Purkinje Cells ; Rats* ; Receptors, Estrogen ; Sexual Behavior ; Spinal Cord

BACKGROUND: Dyskinesia is a common side effect complicating long-term levodopa therapy for Parkinson's disease. However, the pathogenesis of dyskinesia has not been completely understood. In recent animal studies, it has been reported that a NMDA (N-methyl-D-aspartate) antagonist reduced levodopa-induced dyskinesia. These findings suggest that the hyperfunction of NMDA receptors on striatal efferent neurons contributed to the pathogenesis of dyskinesia. Amantadine has also been recently shown to antagonize central NMDA receptors. In the present study, we observed amantadine efficacy in levodopa-induced dyskinesia in parkinsonian patients. METHODS:Twenty-two parkinsonian patients with levodopa-induced dyskinesia participated in a placebo-controlled, cross-over study. We prescribed 100 mg amantadine daily as a starting dose, which was built up every four days and titrated up to 400 mg a day. After two weeks of a wash-out period, a placebo was given with the same schedule. The doses of levodopa and other antiparkinsonian drugs were unchanged during this period. We assessed the duration and disability of dyskinesia (UPDRS part IV, item 32 and 33) based on diary and interview. RESULTS: Amantadine was superior to placebo in reducing the duration of dyskinesia in 9 patients (42.9%) and the disability of dyskinesia in 11 patients (52.4%). The reduction of the duration and disability of dyskinesia was correlated with the dose of amantadine. CONCLUSIONS These findings suggest that amantadine can improve levodopa induced dyskinesia and supports the view that the hyperfunction of NMDA receptors contributes to the pathogenesis of levodopa induced dyskinesia.
Amantadine* ; Animals ; Appointments and Schedules ; Cross-Over Studies ; Dyskinesias* ; Humans ; Levodopa ; N-Methylaspartate ; Neurons, Efferent ; Parkinson Disease ; Receptors, N-Methyl-D-Aspartate

No abstract available.
Clone Cells* ; Humans* ; Lymphocytes*

Spontaneous pneumomediastinum is rare in children, mainly affecting male adolescents. It usually occurs secondary to alveloar rupture in the pulmonary interstitium, followed by dissection of gas towards the hilum and mediastinum. Many pathological and physiological events can lead to alveolar rupture, but the most common cause in children is asthma. The most frequent triggers in the pediatric age group are asthma, vomiting of any cause, situations reproducing the Valsalva maneuver (e.g., shouting, coughing), and intense sport activities. We report two cases of pneumomediastinum, occuring in a patient with vigorous coughing and pneumonia and in a patient with dyspnea and pneumonia. We describe the clinical and radiologic findings of two cases. In addition, we have made a comprehensive review of the literature on spontaneous pneumomediastinum in children.
Adolescent ; Asthma ; Child ; Cough ; Dyspnea ; Humans ; Mediastinal Emphysema* ; Mediastinum ; Pneumonia ; Rupture ; Sports ; Subcutaneous Emphysema ; Valsalva Maneuver ; Vomiting

BACKGROUND: The effective treatment of hematologic malignancies depends upon application of different therapeutic strategies by selecting patients known as the high risk group and the detection of malignant cells that can not be distinguished during following-up. We compared the results of G-banding and fluorescence in situ hybridization (FISH), which are used most frequently in detecting genetic changes, with the respect to investigating the discrepancies between these methods. METHODS: G-banding and FISH were performed on 919 consecutive specimens from 304 patients with hematologic malignancies. As for FISH, we covered most of the more frequent gene-tic changes, using 18 types of FISH probe. RESULTS: The average discrepancy between G-banding and FISH was 8.6% with a discrepancy at initial diagnosis of 6.0% and at follow-up of 11.9%, indicating greater discrepancy at follow-up after treatment. The chromosomal changes with especially large discrepancies were TEL/AML1, BCR/ABL & del(5q) (22.4%, 18.1%, and 16.2%, respectively). According to each disease, the discrepancies in acute biphenotypic leukemia (33.3%), acute lymphoblastic leukemia (14.7%), and chronic myelogenous leukemia (9.6%) were larger than average discrepancy. CONCLUSTIONS: We concluded that application of FISH is effective for detecting genetic changes in hematologic malignancies. Once genetic changes are detected, follow-up with FISH would be especially effective for making an accurate assessment of the likelihood of complete remission and recurrence.
Diagnosis ; Fluorescence ; Follow-Up Studies ; Hematologic Neoplasms ; Humans ; In Situ Hybridization ; Leukemia, Biphenotypic, Acute ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; Recurrence

No abstract available.
Blood Platelets* ; Platelet Factor 4*

A case of diffuse cerebrospinal gliomatosis with extensive leptomeningeal spread is presented. The patient, an 18-year-old girl, was admitted due to progressive weakness and paresthesia of both legs, following rapid neuropsychiatric deterioration. An initial magnetic resonance imaging (MRI) study of the T-spine showed diffuse high signal intensities from T9 to T12 spinal cords on a T2 sagittal image and diffuse cord bulging at T1WI. This suggested an inflammatory lesion such as tuberculosis or fungal meningoencephalitis. A limited autopsy was performed. A microscopic examination revealed multifocal GFAP-positive astrocytic proliferations that were low grade astrocytoma in the cerebral leptomeninges, parietal, occipital and temporal lobes and anaplastic astrocytoma in the spinal cord and spinal leptomeninges. The high proliferative indices of the spinal lesion and aneuploidy correspond to a diagnosis of malignant astrocytoma and a rapid fatal clinical course.
Adolescence ; Brain/pathology ; Case Report ; Cell Division ; Diagnosis, Differential ; Female ; Human ; Magnetic Resonance Imaging ; Meninges/pathology* ; Neoplasms, Neuroepithelial/pathology* ; Neoplasms, Neuroepithelial/diagnosis ; Spinal Cord/pathology

The first author of the article has duely admitted that he is mainly responsible for the misconduct.