No abstract available.
Mediastinum* ; Osteosarcoma*

BACKGROUND: Relative changes of astroglial volume constitute the major part of brain edema, which is related to delayed neuronal damage. Several factors including glutamate may contribute to astroglial swelling. Intravenous anesthetic, ketamine was known to restore neuronal damage by inhibiting NMDA receptor activity. Therefore, we decided to investigate the effect of ketamine on the astrocyte swelling by glutamate in the present study. METHODS: To analyze cell swelling in vitro, glial cell line, U1242MG was used. The effects of glutamate (1, 2, 3 mM), and glutamate with ketamine (1 mM) on the regulation of astrocyte volume were achieved by flow cytometry system. To eliminate the dead cells from experimental cell suspension and to assess cell viability, fluorescent dye propidium iodide was used. RESULTS: Glutamate addition (1, 2, 3mM) caused astroglial swelling both in calcium present and calcium absent buffer. The difference of cellular swelling dependent on glutamate concentration was only seen in calcium free buffer (p<0.05). Ketamine per se did not affect astroglial volume. However, when it was added to glutamate perfusion, 1 mM ketamine diminished cellular swelling by glutamate during first 10 minutes (p<0.05), and cellular shrinkage by glutamate after 1 hour incubation (p<0.05). CONCLUSIONS: Ketamine (1 mM) is effective in the regulation of astroglial volume alterations induced by glutamate in both short time and long time perfusion.
Astrocytes ; Brain Edema ; Calcium ; Cell Survival ; Flow Cytometry ; Glutamic Acid* ; Ketamine* ; N-Methylaspartate ; Neuroglia ; Neurons ; Perfusion ; Propidium

Systemic tumor embolisms after pulmonary resections for malignancy are rare, but usually severe and sometimes fatal. Here, we report a case of a 70-year-old woman who underwent pulmonary resection for lung cancer and subsequently developed acute arterial occlusion of the lower extremities caused by a tumorous embolus.
Aged ; Embolectomy ; Embolism* ; Female ; Femoral Artery ; Humans ; Lower Extremity ; Lung Neoplasms* ; Lung* ; Neoplastic Cells, Circulating

Tumor angiogenesis has been found to have prognostic significance in many tumor types for predicting an increased risk of metastasis. We assessed tumor vascularity in 28 cases of borderline malignancy and 71 cases of carcinoma of the ovary which had been resected and diagnosed, using the highly specific endothelial cell marker CD34. The numbers of microvessels were counted in 200 magnification in three highly vascularised areas. The numbers of microvessels in carcinomas were higher than that in the borderline malignancy of serous and mucinous tumors. The number of microvessels of mucinous carcinomas was significantly higher than that of serous carcinomas. There were neither significant differences in the number of microvessels according to histological tumor types (p=0.075) nor significant differences in the number of microvessels according to FIGO stages (p=0.072). But in serous carcinomas, the number of microvessels was higher in the FIGO III-IV stage than in the FIGO I-II stage (p=0.017). This study showed higher neovascularization in malignant tumor than borderline malignancy, and in the advanced stage (FIGO III-IV) than less advanced stage (FIGO I-II) of serous carcinomas.
Adenocarcinoma, Mucinous ; Endothelial Cells ; Female ; Microvessels ; Mucins ; Neoplasm Metastasis ; Ovary

No abstract available.
Clonidine* ; Depression* ; Growth Hormone* ; Humans ; Panic Disorder* ; Panic*

No abstract available.

No abstract available.
Heat-Shock Proteins* ; Hot Temperature*

No abstract available.
Heat-Shock Proteins* ; Hot Temperature*

No abstract available.

A 60-year-old man with advanced esophageal cancer was admitted for surgical placement of a feeding jejunostomy tube before commencement of chemoradiotherapy. His esophageal cancer had directly invaded the posterior tracheal wall, inducing a nearly total obstruction of the distal trachea. On the day before the surgery, respiratory failure developed due to tumor progression and tracheal edema. Tracheal intubation and mechanical ventilation were attempted without success. Application of veno-venous extracorporeal membrane oxygenation (ECMO) corrected the patient's respiratory acidosis and relieved his dyspnea. With full ECMO support, he underwent tracheal stent insertion. Two hours later, he was weaned from ECMO support uneventfully. This was a successful case of tracheal stenting for airway obstruction under rescue veno-venous ECMO.
Acidosis, Respiratory ; Airway Management ; Airway Obstruction ; Chemoradiotherapy ; Dyspnea ; Edema ; Emergencies* ; Esophageal Neoplasms* ; Extracorporeal Membrane Oxygenation ; Humans ; Intubation ; Jejunostomy ; Middle Aged ; Respiration, Artificial ; Respiratory Insufficiency ; Stents ; Trachea ; Tracheal Stenosis