No Abstract Available.
Animals ; Apoptosis* ; Rats*

No abstract available.
Anxiety ; Cellular Phone ; Humans ; Impulsive Behavior

No abstract available.
Anxiety ; Cellular Phone ; Humans ; Impulsive Behavior

Orthodontic tooth movement in response to orthodontic force results from actions of osteoclasts and osteoblasts in the cell level. Convincing evidence has now been provided to support the view that osteoclasts are derived from mononuclear cells that originate in the bone marrow or other hematopoietic organs and they migrate to the bones via vascular routes. Nitric oxide(NO), which accounts for the biological properties of endothelium-derived relaxmg factor(EDRF), is the endogenous stimulator of soluble guanylate cylase. The discovery of the formation of nitric oxide(NO) from L-arginine in mammalian tissues and its biologioal roles has, in the last 7 years, thrown new light onto many areas of research. Data from experiments in vitro showed that N-metyl-L-arginine(L-NMA) and L-nitro-L-arginine(L-NAME) are competitive inhibitors of nitric oxide synthase. This study suggest that the multinucleated cells in our culture have characteristics of osteoclasts and that the potential bone cell activity of nitric oxide in vitro may be mediated in part by stimulation of marrow mononuclear cells to form osteoclast-like cells. Bone marrow cells were obtained from tibia of 19-days old chick embryo. After sacrifice, tibia was quickly dissected and the bone were then split to expose the medullary bone. The cells were attached for 4 hours and the nonadherent cells were collected. Marrow cells were cultured in 96-well plate in medium 199. To examine the number of TRAP-positive multinucleated cells(MNCs), 10(-8) M Vit-D3 and various concentration of L-NMA and L-NAME were added at the beginning of cultures and with each medium change. After 7 days of culture, tartrate-resistant acid phosphatase(TRAP) staining was performed for microscopic evaluation. Cells having more than three nuclei per cell were counted as MNCs. The observed results were as follows; 1. 1,25-dihydroxyvitamine D3 stimulated the osteoclast-like multinucleated cells in cultures of chick embryo bone marrow. 2. Nitric oxide synthase inhibitors(NOSI ; N-NMA, N-NAME) stimulated the osteoclast-like cells in cultures of chick embry bone marrow. 3. 1,25-dihydroxyvltamine D3 and nitric oxide synthase inhibitors did not appear to have additive effect on the generation of TRAP-positive MNCs. These results suggest that nitric oxide synthase inhibitors may stimulate the osteoclast-like multinucleated cell formation and fusion in cultures of chick bone marrow.
Animals ; Arginine ; Bone Marrow ; Bone Marrow Cells ; Chick Embryo ; NG-Nitroarginine Methyl Ester ; Nitric Oxide Synthase* ; Nitric Oxide* ; Osteoblasts ; Osteoclasts ; Tibia ; Tooth Movement

Basal cell carcinoma is the most common neoplasm of the eyelids, occurring almost twenty times more often than squamous cell carcinoma. Extensive ulceration occurs with growth(rodent ulcer). Generally the lower eyelid is involved with basal cell carcinoma, particularly its outer portion, followed by the inner canthus, the upper eyelid and then lateral canthus. It is found most often in sixth decade life. The etiology of carcinoma of the lid is assumed to be association with trauma, irritation by long use of spectacles, dirty skin, chronic blepharitis and conjunctivitis, eczema and scar caused by burn. Complete eradication of these tumors is important. We experienced a case of basal cell carcinoma in lower lid with conjunctival involvement treated by rotation flap method.
Blepharitis ; Burns ; Carcinoma, Basal Cell* ; Carcinoma, Squamous Cell ; Cicatrix ; Conjunctivitis ; Eczema ; Eyeglasses ; Eyelids ; Skin ; Ulcer

No abstract available.
Eosinophilia*

The Rathke's cleft cyst is generally thought to be derived from Rathke's pouch remanants. Symptomatic Rathke's cleft cyst was first described by Goldzieher in 1913. Recently, several cases have been reported by the gradual development of diagnostic methods. We present our experience of a rare case of ectopic suprasellar Ratheke's cleft cysts. The cysts were located in the interpeduncular cistern. We performed a successful operation and made immunohistochemical examinations.

No abstract available.
Astrocytoma* ; Tuberous Sclerosis*

BACKGROUND: Using c-fos expression one of the immediate early gene, as a marker of altered neuronal response, we investigated the effect of superior cervical ganglion block (SCGB) exhibiting the same effect of SGB of human on the activity of several brain regions which are considered as located on autonomic neural pathway and neuroendocrine axis in rat. METHOD: The 48 Sprague-Dawley strain rats were divided into 4 groups, as saline/stress (control) group, SCGB/stress (tested) group, saline group, SCGB group. Superior cervical ganglion block was conducted in the SCGB/stress group and SCGB group while saline/stress and saline group were sham operated. After then restraint stress was imposed on the animals of SCGB/stress group and saline/stress group. And 2 hour after injection (saline, SCGB group) or restraint stress (saline/stress, SCGB/stress group), c-fos protein (Fos) was localized by immunocytochemistry. RESULTS: Much stronger Fos immunoreactivity was induced in the several brain region of control group rats compared to other three groups and the numbers of Fos positive cell count of tested group were significantly decreased in paraventricular hypothalamic nucleus (p<0.01), A5 (p<0.01), raphe pallidus (p<0.05), nucleus tractus solitaius (p<0.01) compared to control group. CONCLUSION: This study demonstrate that superior cervical ganglion block attenuates stress induced neuronal activities of paraventricular hypothalamic nucleus, A5, raphe pallidus, nucleus tractus solitarius.
Animals ; Axis, Cervical Vertebra ; Brain* ; Cell Count ; Genes, vif ; Humans ; Immunohistochemistry ; Neural Pathways ; Neurons ; Paraventricular Hypothalamic Nucleus ; Rats* ; Rats, Sprague-Dawley ; Solitary Nucleus ; Superior Cervical Ganglion*

No abstract available.
Gastroschisis*