An epidemiological study is to observe and analyse 100 cases of lung cancer in Korean, which had been diagnosed actually at the general hospitals in Korea from 1970 through 1974, to discover the tendency of the lung cancer by sex, age, occupation, duration of clinical symptoms before diagnosis, site of cancer in lung, size of cancer, occurrence, treatment, prognosis, smoking and pathological findings as follows. 1. Males were affected 5.7 times more than females, the peak incidence of lung cancer were 50 years old age group. 2. The occupations of the cases were commerce, agriculture, industry, laborers and teachers, etc. in thht order. 3. The average duration symptoms from onset to diagnosis were 5.5 months. 4. The cancers were affected more right side than left side of the lungs, Particularly the most of them were affected in the upper lobes of the lungs. 5. The average diameter of the tumors was 5.5crX6.5cm, However the largest of them was 10cm X 13cm. 6. The most cases of the lung cancers were occurred primarily. 7. Out of the 100 cases, 58 cases had no treatment, 23 cases had palliative-symptomatic treatment, of cases by special chemo-therapy, 7 cases by surgery, and 5 cases by cobalt 60 or X-gay. 8. In the view point of prognosis, the most cases of the lung cancers died within one year atfer diagnosis. 9. The smoking was one of the causative factor of lung cancer, but there was no significant diferentiation by means of the amount of smoking. 10. The most cases of the lung cancers diangosed histo-pathologically, were epidermoid(squamous) type.
Agriculture ; Cobalt ; Commerce ; Diagnosis ; Epidemiologic Studies* ; Female ; Hospitals, General ; Humans ; Incidence ; Korea ; Lung Neoplasms* ; Lung* ; Male ; Middle Aged ; Occupations ; Prognosis ; Smoke ; Smoking

No abstract available.
Hepatitis* ; Humans

No abstract available.
Animal ; Child ; Clinical Trials ; Dapsone/therapeutic use* ; Haplorhini ; Human ; Leprosy/drug therapy* ; Mycobacterium leprae/growth & development ; Sciuridae/microbiology ; Time Factors

No abstract available.
Korea* ; Leprosy*

No abstract available.
Cleft Lip* ; Congenital Abnormalities* ; Nose*

The detection of the tubercle bacilli is absolutely necessary to make definite diagnosis of patients with genitourinary tuberculosis. Recently it has been reported that the detection rate of tubercle bacilli from the patient's urine is decreasing because of abuse of the anti-tuberculous drugs and the resistance developed in the experimental animals such as mouse and guinea pig (Marks, 1972). Therefore the necessity of the development of better diagnostic methods has been mandatory. Recently it was reported that the Korean chipmunks(Tamias sibiricus asiaticus. Gmelin) are highly susceptible to tubercle bacilli (Chang et al., 1971). The specific objection of this study is to pursue the possibility of using the chipmunks for the early diagnosis of genitourinary tuberculosis. Twenty-four hour urines of 34 patients with suspected genitourinary tuberculosis were tested for tubercle bacilli with smear, culture, and inoculation ink chipmunks and mice intraperitoneally. The results are briefly summarized as follows: 1. 18 cases out of 34 patients with suspected genitourinary tuberculosis were confirmed to be positive by any means of stained smear, culture and animal inoculation. Of 18 proved genitourinary tuberculosis. 12 cases were confirmed by smear, culture and mouse inoculation, and on the other hand. 14 cases by chipmunks inoculation. 2. In the group of chipmunks inoculation, 8 cases were found to be positive on the 10th day and 14 cages on the 20th day. 3. These findings suggest that the period required for the detection of tubercle bacilli was shorter and the positive rate was higher than that of other animals and other methods. For the clinical applications of the Korean chipmunks as a diagnostic tools, further effort is considered to be necessary.
Animals ; Diagnosis ; Early Diagnosis ; Guinea Pigs ; Hand ; Humans ; Ink ; Mice ; Sciuridae* ; Tuberculosis*

Captured wild chipmunks which have been extensively used for leprosy research, were studied in our laboratory for the reproductive potentials. Histologically normal organs, which are involved in reproduction in both sexes, were observed. Functionally active viable sperms in sufficient amount were produced by the males, and were used for artificial inseminations. A state of normal reproductive physiology of the females was also confirmed by studies on histologic analysis of oogenesis in the ovaries and in cultured ovaries in vitro. Regularity in ovulation was also determined by vaginal epithelial cell examinations. Thus these animals appeared to be normal in terms of fecundity. It was considered that the inability of these animals to have successful breeding in the captured state was due to problems in fertility, especially in maintaining the pregnancy.
Animal ; Animals, Wild/physiology ; Breeding ; Estrus ; Female ; Fertility* ; In Vitro ; Insemination, Artificial/veterinary ; Male ; Pregnancy ; Rodentia/physiology* ; Sciuridae/physiology* ; Sperm Motility ; Vagina/cytology

This is a report on attempts tp search for a suitable experimental animal model which is sensitive to the exocellular substances of M. ulcerans, prior to study of biochemical and pathogenic natures of the substances. Cells of M. ulcerans grown in a broth medium were harvested by filtration and washed with phosphate-buffered saline. The filtrate of culture supernatant was subjected to fractionation by addition of various amounts of ammonium sulfate. The washed cells and the preparations resulted from ammonium sulfate fractionation (ASF 45 and ASF 70) were inoculated by either foot-pad injection, subcutaneous or intradermal injection to the selected animal groups. Any skin response due to administration of the preparations; erythema, edema, pus formation, etc. was macroscopically observed along with time progression. Among the animals employed, such as guinea pig, mouse, and rabbit, the rabbit was the only animal group showing strong skin response to the washed cells, ASF 45 and ASF 70. The heat-treated preparation of ASF 45 seemed to be inactive in elucidating skin response of rabbits. Dependence of skin response upon dose of the washed cells and the preparation of ASF 45 was also discussed.
Animal ; Erythema/etiology ; Guinea Pigs ; Intradermal Tests ; Mice ; Mycobacterium/pathogenicity* ; Rabbits

No abstract available.
Adult ; Female ; Human ; Korea ; Male ; Pregnancy ; Syphilis/epidemiology*

Efforts have been made to accomplish a long term in vitro cultivation of mouse peritoneal macrophage as a host cell for growth of Mycobacterium lepraemurium. Following the inoculation with live or heat-killed Myco. lepraemuriuum of cultured macrophages either on a cover-slip in Leighton tube or in a small petri dish, microscopic observations of acid-fast (AF) stained slide preparation, and total counts of AF bacilli that were released by ultrasonic treatment from the macrophages in small petri dish have been followed in order to present microscopic and quantitative evidence of the actual multiplication of Myco. lepraemurium in cultured mouse peritoneal macrophage. The results are summarized and conclusions are as follows; 1. Successful long term in vitro cultivation of mouse peritoneal macrophage has been accomplished. The growth medium for tissue culture consisted of NCTC 109;50% heat-inactivated calf serum; 40% and beef embryo extract (diluted 1 : 5); 10% and the medium was renewed every 3 to 4 days. The incubation temperature was 37 degrees C; before and at 30 degrees C; after the inoculation with Myco. lepramurium. The CO2 content inside the CO2 humidity incubator for the cultivation of macrophage was kept at 5%. 2. In cultures of macrophage inoculated with live Myco. lepraemurium, clear features of increases in the number of AF bacilli inside individual cell, of elongation of bacill and of increased solidity in AF staining were observed. However, these features were absent in cultlires of macrophage inoculated with heat-killed Myco. lepraemurium. 3. The ultrasonic treatment of macrophage inoculated with 1ive Myco. lepraemurium, and the quantitative assessment of total number of AF bacilli through the course of 6 to 8 weeks after inoculation has provided partial but substantial evidence of actual multiplication of Myco. lepraemurium in cultured macrophages.
Animal ; Female ; Macrophages/microbiology* ; Mice ; Mycobacterium leprae/growth & development* ; Peritoneum/cytology ; Tissue Culture