Pancreatic hyperplastic nodules were experimentally produced in male Sprague-Dawley rats by single doses of intravenous injection of 4-hydroxyaminoquinoline-1-oxide(4-HAQO), 5 mg, 10 mg, 20 mg and 30 mg per 1kg of body weight. Every ten rats were sacrificed after 1 day, 1 week and monthly until 6 months. Within the first week, pancreatic acini and islets were severely affected with necrosis and the adjacent acinar cells underwent vacuolization. But, pancreatic ductules remained relatively unaffected. The degrees of acinar cell degeneration were proportionally increased as with the increased doses of 4-HAQO administration. The levels of blood glucose and serum amylase were closely corresponding to the light microscopic features of the pancreas. Two months after administration of 4-HAQO, the nongranular acinar cells started to proliferate and their proportion of total acinar cells was 35%, whereas that of control group was 15%, after 3 months the proportion of nongranular cells was decreased. After 6 months, multiple hyperplastic nodules were discovered within the pancreatic acini of all 12 rats, and the largest one measured 500 micro in diameter. Each hyperplastic nodule was uniformly composed of larger cells in two folds of normal cells with hyperchromatic muclei and prominent nucleoli together with a few zymogen granules in their cytoplasms. Ultrastructurally, the cells contained abundant dilated endoplasmic reticulum and markedly decreased zymogen granules. Nuclear heterochromatin became finely dispersed with loss of marginal clumping. During the regeneration process, admixture of islet cells with membrance-bounded granules was identified among the clusters of regenerating acinar cells. On the basis of above findings, the induction of hyperplastic nodules in rat pancreas by 4-HAQO was confirmed, and its histogenesis may reflect a nodular hyperplasia of non-granular acinar cells with potential progress as a neoplastic lesion. And the evidence of the hypothesis that the pancreatic exocrine cells and endocrine cells are in same origin, was presented.
Male ; Humans ; Rats ; Animals

Although epidural fibrosis after laminectomy is considered to be the cause of pain in a number of patients, the exact relationship of postoperative scar tissue and symptoms remains controversial. However it is generally accepted that epidural fibrosis after surgical decompression of neural tissue has to be avoided. To diminish the likelihooa that such a scar will form, fat grafts have been used to create an interpositional membrane. Compression of a nerve after the use of a fat graft is rare; postoperative cauda equina syndrome, resulting from compression by a grafted fat. We report the case of a patient who had this complication.
Cauda Equina* ; Cicatrix ; Decompression, Surgical ; Fibrosis ; Humans ; Laminectomy* ; Membranes ; Polyradiculopathy* ; Spine* ; Transplants*

Unilateral absence of the articular process at a lumbar vertebra is a rare anomaly. The etiology of the congenital absence of articular process is not precisely determined yet, but it was explained as some of the possible embryologic bases. Absence of the articular process at the level of L5-Sl have been reported a few, but anomaly above L4 is rare. We are reporting a case of absence of articular process at the level of the 4th lumbar vertebra.
Spine

No abstract available.
Malformations of Cortical Development* ; Seizures*

No abstract available.
Malformations of Cortical Development* ; Seizures*

No abstract available.
Panax*

We report a case of experimental reproduction of the skin lesion of polymorphous light eruption by potent UVA irradiating instrument, metal halide mercury lamp. A 20-year-old female had complained skin lesion at sun-exposed area since childhood. The skin lesion was reproduced after repetitive exposure of high dose of UVA, and the histologic feaure of the lesion was consistent with polymorphous light eruption. Metal halide mercury lamp used in this patient has hight irradiance and exclusive of UVB and UVC. It can be convenient and precise one in phototest using high doses of UVA.
Female ; Humans ; Reproduction* ; Skin ; Young Adult

Our study was performed to evaluate the efficacy of anthralin-UVB therapy for psoriasis by simplifying the conventional Ingram regimen, 34 patients(21 admitted, and 13 OPD patients) were included in our study and the resulti can be summarized as follows. 1. There were no cases of treatment failure. 16 patients(76. 2%) out of the 2l admitted patients and 7 patients(53.8%) out of the 13 OPD patients showed clearing. 2. In the case of the admitted patients, the mean numbers of therapy(days) of the improved patients reaching grade 4 were 12. 0(18. 1 days) in the trunk lesions and 15. 5 (22. 0 days) in the extremity lesions' and those of the cleared patients reaching grade 4 were 11. 2(16. 0 days) in the trunk lesions, and 13. 4(lg. 5 days) in the extremity lesions, but the difference was not significant statistically(pp o.ps). The difference between the therapeutic effects of the admitted and the OPD patients was significant statistically(p<0. 05). 3. There were some notable side effects such as staining, pruritus, and erythema, but there were no cases of therapy termination.
Erythema ; Extremities ; Humans ; Pruritus ; Psoriasis* ; Treatment Failure

No abstract available.
Bile*

Tinea pedis is frequently found in people with poor personal hygiene and in hot, humid environments. The authors investigated the clinical, epidemiological, and mycological characteristics of tinea pedis in 170 garbage workers(166 males and 4 females) employed in a garbage plant in Seoul, Korea. 40 were clerical workers and 130 were field workers. Tinea pedis was found in 134 with a prevalence rate of 78.8%. Of those 134, 61(45.5%) also had onychomycosis. The prevalence of tinea pedis increased with age and the period working in garbage plant. However, there was no difference in the prevalence of tinea pedis between clerical workers and field workers, mitigating against the conclusion that their tinea pedis may be of occupational origin. Clinically tinea pedis was classified into 4 types ; interdigital (41.8%), vesicular(23.1%), dry squamous(22.4%), and mixed(12.7%). KOH smear positivity and culture positivity was related to clinical types of the lesion the lowest in the interdigital type. In the interdigital type, the etiology of nonmycotic lesions could not be identified. Negative fungal cultures could have been due to secondary bacterial infections. 63 strains of dermatophytes were isolated; 54 strains of Trichophyton rubrem(85.7%), 8 strains of Trichophyton mentagrophytes(12.7%) and 1 mixed infection of T. rubrum and T. mentagrophytes. T. mentagrophytes was isolated only from the vesicular lesions. 8 strains of yeast forms, positive in KOH smears and yielding pure colonies, were also isolated, and repeated mycologic examination yielded the same results. Among them, at least 4 cases of Trichosporon beigelii, and 1 case of Candida parapsilosis were considered to be of pathogenic significance.
Arthrodermataceae ; Bacterial Infections ; Candida ; Coinfection ; Garbage* ; Health Personnel ; Humans ; Hygiene ; Korea ; Male ; Onychomycosis ; Plants ; Prevalence ; Seoul ; Tinea Pedis* ; Tinea* ; Trichophyton ; Trichosporon ; Yeasts