The amebicidal activity of traditional anitiamoebic drug (emetine, carbasone, diodoquin, chloroquine, atabrine, chloramphenicol and tertracycline) and newly appeared chemicals(niridazole, metronidazole and No. 8603 substance) were assayed by in vitro experiment using five strains of human originated E, histolytica. The variety of amebicidal activity of drugs by the strains were discussed. Ranges of amoebicidal activity of traditional antiamoebic drugs kept almost similar titers of previous reports at the concentration; 1:5,000 to 1:20,000 with emetine hydrochloride, 1:10.000 to 1:20,000 with carbarsone, 1:8,000 to 1:16,000 with diodoquin, 1:50,000 with chloroquine, 1:1,000 to 1: 4,000 with atabrine ,1:1,000 to 1:2,000 with chloramphencol and 1:5,000 to 1:8,000 with tetracycline. The newly appeared chemicals showed higher amebicidal titres at the concentration; 1:500,000 to 1:5,000,000 with niridazole, 1:50,000 to 1:100,000 with metronidazol and 1:100,000 to 1:500,000 with No.8603 substance. Emetine, chloramphenicol and No. 8603 substance showed amebicidal activities at lower concentration to intestine originated amebae (YS 14, YS 15 and NAMRU II strain) than to liver originated amebae (YS 24 and YS 25 strain ), while carbarsone, chloroquine and metronidazole showed the activity at higher concentrations. Diodoquin showed lower amebicidal titres to trophozoite borne amebae (NAMRU II, YS 24 and YS 25 strain) than to cyst borne amebae(YS 14 and YS 15 strain), but niridazole showed converse results. The concentration of atabrine for amebicidal activity was not constant according to strains of the amoeba, but tetracycline showed almost settled titers.
parasitology-protozoa ; Entamoeba histolytica ; virulence ; in-vitro ; chemotherapy ; emetine ; carbasone ; diodoquin ; chloroquine ; atabrine ; chloramphenicol ; tertracycline ; niridazole ; metronidazole ; No. 8603 substance

Diiodohydroxyquin introduced by Dillaha et al in 1953, had been the mainstay for the treatment of acrodermatitis enteropathica (A.E.). However, following the report by Moynahan and Barnes in 1973 of successful treatment with the oral administration of zinc sulfate, the clinical response to this treatment has been confirmed by different investigators in many countries. In Korean literature, Rhim et al reported two cases of A,E. in siblings successfully treated with oral zinc sulfate in 1980. In our case of cow's milk-fed, 7 month-old male infant, typical claasical features of total alopecia, diarrhea and periorificial dermatitis developed at about 3 months. of age and the zinc level in serum was 101 ug/dl at the first visit. Treatment first with diiodohydroxyquin was initiated at a dose of 315 mg/day by mouth for the first week and 630 mg/day for the second week, but this therapeutic regimen brought about little or no effect. Because of no definite improvement even with increasing dose of 1260 mg/day for another week, treatment was. changed to oral zinc sulfate. The patient began to receive zinc sulfate 50mg at first day by mouth and the dosage was immediately increased to l00mg daily from the next day. Within 72 hrs there found dramatic improvement in the skin lesions and diharrhea stopped. Twenty days after the start of zinc therapy, nearly all the skin lesions disappeared and the patient was discharged in satisfactory condition with only mild residual erythema. (countinued..)
Acrodermatitis* ; Administration, Oral ; Alopecia ; Dermatitis ; Diarrhea ; Erythema ; Humans ; Infant ; Iodoquinol ; Male ; Mouth ; Research Personnel ; Siblings ; Skin ; Zinc ; Zinc Sulfate

Clinical studies on five patients with acrodermatitis enteropathica visited during the period from March 1968 to September 1970 to the department of dermatology, Pusan national University hospital were made and the results obtained were summerized as follows; in addition, the literature was reviewed. 1) All of 5 patients aging from 3 months to 3 years, showed characteristic distributions of the cutaneous lesions which ranged in character from vesicobullous to heavily scaled psoriasiform and moniliasis-like lesions. 2) Of these, the nearly full clinical pictures were presented in two cases with the gradual onset in early infancy, dermatitis predominantly involving the periorficial areas and extremities, which followed by recurrent attacks of greenish yellow-colored diarrhea, partial and diffuse loss of the scalp hairs, stomatitis and monilial infections, whereas the rest thtee cases seemed to be "forme fruste" of this disease with the absence of hair and nail abnormalities. 3) There found no speeific histologic findings in two biopsies performed but showed somewhat the pictures of sub-acute dermatoses. 4) Candida albicans were demonstrated from the skin lesions in two cases, 5) Treatment with local application of gentian violet solution, nystatin ointment for the skin lesions and stomatitis were temporarily favorable in all cases and in case 1 and 5, diodoquin, each 300mg and 600mg were administered orally in divided doses for two weeks, with the result of satisfactory responses. However, the latter died, on the 3rd hospitalized day, of acute glomerulonephritis and upper respiratory infection. 6) Though it is generally accepted that there is definite familial occurrence in this disorder but we recognized no evidence of familial incidence in our five cases.
Acrodermatitis* ; Aging ; Biopsy ; Busan ; Candida albicans ; Dermatitis ; Dermatology ; Diarrhea ; Extremities ; Gentian Violet ; Glomerulonephritis ; Hair ; Humans ; Incidence ; Iodoquinol ; Nails, Malformed ; Nystatin ; Scalp ; Skin ; Skin Diseases ; Stomatitis