PURPOSE: In adriamycin(ADR)-induced cardiomyopathy, several different mechanisms are suggested. However, little information is available regarding the role of apoptosis. In the present study, we examined the induction of apoptosis on ADR treatment and anti-apoptotic effects of probucol, a lipid-lowering drug, and we also studied the changes of bcl-2 expression in order to see the molecular mechanisms underlying the effect of probucol. METHODS: Cardiac myocytes were isolated from 3-day-old rats, and cultured in low(1 pM) or high doses(10pM) of ADR for 24 hours. Probucol(50 pM) was added 30 minutes before ADR administration. Apoptosis was determined by TUNEL staining, and bcl-2 expression was estimated by immunocytochemistry. RESULTS: The number of TUNEL-positive cells significantly increased in both groups treated with ADR. However, anti-apoptotic effect of probucol was evident only in low dose. In addition, the expression of bcl-2 was significantly increased only in the low-dose ADR treatment group and its expression was inhibited by pretreatment of probucol. CONCLUSION: These results suggest that apoptosis might play an important role in ADR-induced cardiotoxicity, and ADR-induced apoptosis was partially prevented by pretreatment of probucol. And ADR-induced apoptosis was not related with depression of bcl-2. Additionally, inhibition of bcl-2 gene expression of low-dose ADR treatment group by probucol suggests that another cell survival mechanism could be implicated in the action of probucol. (J Korean Pediatr Soc 2000;43:746-754)
Animals ; Apoptosis* ; Cardiomyopathies ; Cell Survival ; Depression ; Doxorubicin ; Genes, bcl-2 ; Immunohistochemistry ; In Situ Nick-End Labeling ; Myocytes, Cardiac* ; Probucol* ; Rats*

Relining and rebasing are essential for long-term success and oral health in removable prosthodontics. Major features of failures between metal base and relining resins are adhesive failure due to lack of chemical bonding. The purpose of this study was to find a better metal primer and metal surface treatment method that enhance the bonding strength with relining resin materials. The surfaces of ticonium alloys were treated with 25micrometer sandblasting (Group A), stone wheel (Group B), stone wheel and EZ oxisor (Group C), 75micrometer sandblasting (Group D) and EZ oxisor application after 75micrometer sandblasting (Group E). They were subdivided into no primer application (Group I), MR bond application (Group II) and Metafast bonding liner (Group III). Then specimens were completed though being bonded with relining resins. The specimens were stored in 38degrees C water for 48 hours and tensile strength was measured using the universal testing machine. The results were as follows, 1. Primer application groups showed higher bond strength than no primer application group(p<0.05). 2. In comparison with primer application groups, MR bond group showed higher bond strength than Meta fast bonding liner application group(p<0.05). 3. In comparison with surface treatment methods. Bond strengths of group A and B were significantly different with group C, D, and E, and group C were significantly different with group D, and E in no primer application group(p<0.05). In primer application groups, group A, B, C were significantly different with group D and E(p<0.05). According to results of this study, Metal primer application and metal surface roughening were considered to be advantageous for relining of metal base dentures.
Adhesives ; Alloys ; Denture Bases* ; Dentures* ; Oral Health ; Prosthodontics ; Tensile Strength* ; Water

Modified Mohs surgery is a procedure which eliminated chemical fixation step from Mohs chemosurgery. This technique is faster, less painful and more tissue conserving, allows for immediste repairs, yields higher quality histologic preparations and facilitates an interdisciplinary apporoach; it is the treatment of choice for recurrent or difficult skin cancers. A 58-year-old femele patient presented with a 2x 3cm sized dark brownish, ulcerated nodule on the left upper eyelid. Histopathologic findings revealed several small solid nest composed of basalioma cells in the dermis. We treated with modified Mohs surgery and obtained good result.
Carcinoma, Basal Cell* ; Dermis ; Eyelids ; Humans ; Middle Aged ; Mohs Surgery* ; Skin Neoplasms ; Ulcer

No abstract available.
Animals ; Hepatitis A* ; Hepatitis* ; Mice ; Mice, Inbred ICR*

We report a case of trichorrhexis nodosa in a 27-year-old male. Scanning electron microscopic findings reveals those of typical trichorrhexis nodosa nodal swelling of affected hair showed longitudinal fissures and fractures in the cortex. A paintbrush effect was noted at the site of fracture. Simple avoidance of trauma gave some regrowth of hairs.
Adult ; Hair ; Humans ; Male

No abstract available.

No abstract available.
Colon, Ascending* ; Polymyositis*

Acquired port-wine stain is rare. It mimics a congenital port-wine stain morphologically but the pattern of onset is acquired after birth. It represents a progressive ectasia of vessels located in the superficial vascular plexus. The exact mechanism is unknown but some reported cases have occurred after trauma. We herein report five cases of acquired port-wine stains and they were idiopathic in nature.
Dilatation, Pathologic ; Parturition ; Port-Wine Stain*

No abstract available.
Hepatitis E virus* ; Hepatitis E* ; Hepatitis* ; Korea*

No abstract available.
Hair ; Survival Rate ; Transplants