The ultrastructural changes of sciatic nerve and immunohistochemical changes of beta-catenin, PCNA, substance P were studied at the proximal segment of rat sciatic nerve after compression injury. We used 90 Sprague Dawley rats and the sciatic nerve compressed using silicon tube. We divided experimental groups which were the compression group for 1 hour (1C), for 2 hours (2C), and for 3 hours (3C), the release group for 1 day (1C1R) and 3 days (1C3R) after the compression for 1 hour, the release group for 1 day (2C1R) and 3 days (2C3R) after the compression for 2 hours, the release group for 1 day (3C1R) and 3 days (3C3R) after the compression for 3 hours. The rats were sacrified and took the sciatic nerve specimen. The specimens were investigated under the light microscope after hematoxylin & eosin, toluidin blue, and immunohistochemical stainings. In the H & E finding, the axon of the 1C disappeared, but recovered at the 1C3R. The part of nerve fibers at the 2C were swollen, but began to be partially recovered at 2C3R. Most nerve fibers were enlarged at the 3C, but markedly decreased at the 3C1R. The beta-catenin reaction disappeared at the 1C, but almost recovered at the 1C3R. This reaction of the 2C disappeared in the large fibers, but began to be recovered in the small fibers at the 2C1R. This reaction of the 3C disappeared in the large fibers, but began to be recovered at the 3C1R and 3C3R. The PCNA reaction prominently appeared at the 1C3R and 2C3R, the more prominent reaction at the 3C1R, and markedly increased reaction at the 3C3R. The substance P reaction of the 1C1R was mild positive, and the 2C1R and 3C1R were strong positive. In the toluidin blue staining, the myelin sheaths near the perineurium began to be thickened at the 1C, but almost recovered at the 1C3R. Many myelin sheaths became to be very thickened at the 2C and 3C, but almost recovered at the 2C3R and 3C3R. In the electron microscopic findings, the myelin sheaths of the 1C underwent the demyelination with the separated lamellae and the increase microtubules. At the 1C3R, the axolemma was attached on the myelin sheath and the axon was recovered. the myelin sheaths of the 2C underwent the demyelination with the separated axolemma. At the 2C1R, the myelin sheath was recovered by the developing Schwann cells, many intraaxonal mitochondria of demyelinated nerve fibers. At the 2C3R, the myelin sheath tended to be recovered by the increased rough endoplasmic reticulum and mitochondria of Schwann cells, many intraaxonal mitochondria of demyelinated nerve fibers. The myelin sheaths of the 3C began to be underwent severe demyelination from the middle portion of the sheath and the vacuolization of intraaxonal mitochondria. At the 3C1R, the myelin sheaths were recovered and contained many extended microtubules, mitochondria, and small granules. At the 3C3R, severe demyelinated nerve fibers were recovered by increasing microtubules. The proximal retrograde degeneration of sciatic nerve by the acute compression appeared the loss of the axons and the swelling of nerve fibers. The beta-catenin reaction was disappeared by the compression, but recovered by releasing. This reaction may be played a important role of the recover of demyelination. The PCNA reaction of Schwann cells was increased by the nerve compression. In the substance P finding, the pain after the compression appeared at the 1 day after releasing. Electron microscopic changes after sciatic nerve compression were the demyelination, the separated lamellae and the increase of intraaxonal microtubules. After releasing, the nerve fibers were recovered by developing Schwann cell, the intraaxonal mitochondria, and the transported granules through extending microtubules.
Animals ; Axons ; beta Catenin* ; Demyelinating Diseases ; Endoplasmic Reticulum, Rough ; Eosine Yellowish-(YS) ; Hematoxylin ; Microtubules ; Mitochondria ; Myelin Sheath ; Nerve Fibers ; Peripheral Nerves* ; Proliferating Cell Nuclear Antigen* ; Rats* ; Rats, Sprague-Dawley ; Retrograde Degeneration ; Schwann Cells ; Sciatic Nerve ; Silicones ; Substance P*

Glycogen storage diseases(GSD) are inherited disorders affecting glycogen metabolism and type I GSD is due to the absence or deficiency of glucose-6-phosphatase(G6Pase) enzyme in the liver, kidney, and intestinal mucosa. The defect leads to inadequate hepatic conversion of G6P to glucose and thus make affected individuals susceptible to fasting hypoglycemia, and the accumulation of glycogen occurs in the liver and other organs. Type Ia is the most common form of GSD and clinically growth retardation may manifest of GSD itself rather than growth hormone deficiency(GHD), but we experienced a case of type I GSD with GHD in a 14-year-o1d male. The height was 125 cm, compatible with 50 th percentile of height of 8 years of age. He has doll-like face with fat cheek, relatively thin extremities, and metabolic acidosis, hyperuricemia, hypoglycemia, hyperlipidemia. GH stimulation test with clonidine and L-dopa revealed that the patient had decreased GH secretion. After laboratory work up including liver biopsy, he was diagnosed as type I GSD. Hypoglycemia was managed with frequent feeding with high starch diet(uncooked cornstarch). Metabolic acidosis and hyperuricemia were treated with sodium bicarbonate, allopurinol and probenecid. The patient is being followed at out-patient clinic with clinical improvement after of diet therapy and GH administration.
Acidosis ; Allopurinol ; Biopsy ; Cheek ; Clonidine ; Diet Therapy ; Extremities ; Glucose ; Glycogen Storage Disease* ; Glycogen* ; Growth Hormone* ; Humans ; Hyperlipidemias ; Hyperuricemia ; Hypoglycemia ; Intestinal Mucosa ; Kidney ; Levodopa ; Liver ; Male ; Metabolism ; Outpatients ; Probenecid ; Sodium Bicarbonate ; Starch

No abstract available.
Carcinoma, Squamous Cell* ; Lung Neoplasms* ; Lung* ; Small Cell Lung Carcinoma*

No abstract available.
Antibodies* ; Hemorrhagic Fever with Renal Syndrome* ; Humans* ; Immunization*

BACKGROUND: It is well known that excessive thyroid hormone in the body is associated with bone loss. However, the mechanism by which thyroid hormone affects bone cell metabolism remains unclear. It has been shown that thyroid hormones stimulate osteoclastic bone resorption indirectly via some unknown mediators secreted by osteoblasts, This study was undertaken to determine if interleukin-6 (IL-6) or interleukin-11 (IL-l1) could be the mediator (s) of thyroid hormone-induced bone loss. METHODS: We treated primary cultured human bone rnarrow stromal cells with 3,5,3-triiodo-thyronine (T) and measured basal and interleukin-l (IL-1)-stimulated IL-6/IL-ll production. We also investigated the possible modulating effect of 17B-estradiol (17B-E2.) on thyroid hormone action. RESULTS: T3 at 10 (-12) ~ 10 (-8) M concentration, significantly increased the basal IL-6 production in a dose-dependent manner, and also potentiated the stimulatory effect of IL-1 on IL-6 production. However, T failed to elicit a detectable effect on basal or IL-1-stimulated IL-11 production. Treat#ment with l7B-E2. inhibited IL-1-stimulated IL-6 production, but the effects of T3 on IL-6 production were not affected by 17/B-E. CONCLUSION: These results suggest that thyroid hormone may increase bone resorption by increasing basal IL-6 production and potentiating IL-1-induced IL-6 production from osteoblast-lineage cells, and these effects were independent of estrogen status.
Bone Marrow* ; Bone Resorption ; Estradiol ; Estrogens ; Humans* ; Interleukin-1 ; Interleukin-11* ; Interleukin-6* ; Mesenchymal Stromal Cells* ; Metabolism ; Osteoblasts ; Osteoclasts ; Osteoporosis ; Stromal Cells ; Thyroid Gland* ; Thyroid Hormones

BACKGROUND/AIMS: Although interferon-a(IFNa) is currently the most effective antiviral agent for treating patients with chronic hepatitis C, its efficacy is not always reliable. Factors suggested to infruence outcome of IFN-a therapy for chronic hepatitis C are histological activity, level of viremia and HCV genotype, etc. The aim of this study was to determine the relationship between several pretreatment factors and response to IFN-a therapy in patients with chronic HCV infection. METHODS: Fifty-four patients with chronic HCV infection(47 with chronic hepatitis and 7 with liver cirrhosis) who received IFN-a(2a or 2b) therapy(3 6 MU, three times a week, for 3 12 months) were included. Level of serum HCV RNA(50 patients), HCV genotype(27 patients) and IgM anti- HCV(21 patients) during pretreatment period were assayed. RESULTS: Overall, 19(35%) subjects achieved sustained response(SR), 12(22%) had transient response(TR) and 23(43%) did not respond (nonresponse;NR). Mean age of patients with SR, TR and NR was 46+ 10, 51+ 7.5 and 54+ 9.7 years, respectively(p<0.05 between SR and NR). Among 30 patients with biopsy-proven chronic hepatitis, 13(43%) achieved SR;but only one(14%) in 7 patients with liver cirrhosis. Mean serum HCV RNA level(X10' copies/ml) was higher in nonresponders(7,7+ 13.0) compared with SR(2.3+ 2. 7) or TR(3.1+ 4.9), although statistically insignificant HCV genotyping in 27 patients revealed type la in 5(18.5%), 1b in 14(52%), 2a in 5(18.5%), 2b in 1(3.7%) and 4 in 2(7%), respectively. In non-1b patients, SR rate was significantly higher than 1b patients(69.2% vs. 21.4%, p=0.03). Although IgM anti-HCV was positive in 12(57%) among 21 patients studied, the positive rate and the titer of IgM anti-HCV was not significantly different in three groups. CONCLUSION: Our results suggest that in patients with chronic hepatitis C, infection with genotype 1b, old age, high serum HCV RNA level and the presence of cirrhosis would predict poor response to IFN therapy.
Fibrosis ; Genotype ; Hepatitis C, Chronic ; Hepatitis, Chronic ; Humans ; Immunoglobulin M ; Interferons* ; Liver ; Liver Cirrhosis ; RNA ; Viremia

OBJECTIVES: Elevated pulmonary pressure and right ventricular (RV) dysfunction are the hallmarks of pulmonary vascular disease in animal models and human patients with pulmonary arterial hypertension (PAH). Monocrotaline models of PAH are widely used to study the pathophysiology of PAH. The purpose of this study was to evaluate the severity of PAH rat model by tissue Doppler imaging (TDI). METHODS: PAH was induced in Sprague-Dawley rats by monocrotaline (M) group. The peak systolic (s'), early diastolic (e'), and late diastolic myocardial velocities (a') were measured using TDI at basal segments. Tricuspid annular plane systolic excursion (TAPSE) was measured in the 4-chamber view. Velocity of a tricuspid regurgitation (TR) jet was measured to estimate the pulmonary artery pressure to assess the severity of PAH. RESULTS: Decrease in the RV shortening fraction and ejection fraction were observed in the M group compared with the control (C) group. RV e' velocity and s' velocity were significantly lower in the M group compared with the C group. The TAPSE was significantly lower in the M group compared with the C group (1.26±0.22 mm vs. 2.83±0.34 mm). The TR velocity was significantly higher in the M group compared with the C group (4.48±0.34 m/sec vs. 1.23±0.02 m/sec). CONCLUSION: TAPSE is an easily obtainable, widely recognized and clinically useful echocardiographic parameter of global RV function in the PAH rat model. We recommend that TDI would be a helpful diagnostic tool to evaluate the RV function in PAH rat model.
Animals ; Echocardiography ; Humans ; Hypertension ; Hypertension, Pulmonary ; Models, Animal ; Monocrotaline ; Pulmonary Artery ; Rats ; Rats, Sprague-Dawley ; Tricuspid Valve Insufficiency ; Vascular Diseases ; Ventricular Dysfunction, Right ; Ventricular Function, Right

No abstract available.
Bone Marrow Transplantation* ; Bone Marrow*

The purposes of this study were to assess the child care centers' foodservice facility, and to develop the kitchen facility model based on the general sanitation standards and guidelines in order to provide basic information for a plan review to build or renovate child care centers' foodservice facility. The scopes of the study include : 1) field assessment of the foodservice management practices and facilities in 8 public child care centers, and 2 private child care centers which they are subsidized from the government as public child care centers, 2) development of child care centers' kitchen facility model based on the General Sanitation Standards and Guidelines. The results of this study can be summarized as follows : 1. Field Assessment of the Child Care Centers' Foodservice Facility Average number of children in child care centers was 78.0+/-24.20, the average space of kitchen was 15.13+/-4.25(m2). Especially, the average space of kitchen was 18.49+/-4.35(m2) with enrollment capacity of 90~120 children in child care centers. The inventory level of most foods was relatively low except rice and kimchi. Kitchen facilities and equipments were similar to those of home kitchen and did not meet the standards of institutional practice. Therefore, the director in child care centers should recognize the importance of the sanitation management and pay more attention to the renovation of foodservice facilities as well as sanitation management practices. 2. Development of the Kitchen Facility Model based on the General Sanitation Standards and Guidelines The kitchen facility plan model with enrollment capacity of 100 children was developed based on the results of field assessment and literature review. Suggested kitchen space was 34.16m2(6,100mmx5,600mm). This space was bigger than the results of field survey or precedent study, considered appropriate to implement the general sanitation standards. The main feature of the developed kitchen facility plan and model was product flow in one direction from the arrival of the raw material to the finished product in order to prevent cross contamination and to improve working efficiency.
Child ; Child Care* ; Child* ; Humans ; Institutional Practice ; Sanitation*

The clinical triad of relapsing iritis, ulcers of the mouth and genitalia was first described in 1939 by Hulusi Behcet. This entity, originally confined to the above triad of symptoms appears to be systemic disease manifested by skin lesion, thrombophlebitis, neurologic, cardiovascular or visceral symptoms. The vascular involvement in Behcet's syndrome has been reported since Mischima first described a case in 1961, four types of vascular lesion are freuqnetly observed most commonly on the inferior or superior vena cava. Treatments consist of anticoagulation and administering oral steroids. We report a case of SVC obstruction in 36 years old female patient with Behcet's syndrome.
Adult ; Behcet Syndrome* ; Female ; Genitalia ; Humans ; Iritis ; Mouth ; Skin ; Steroids ; Thrombophlebitis ; Ulcer ; Vena Cava, Superior