A Study on Peripheral Blood T and B Lymphocytes in Leprosy / 대한피부과학회지

In leprosy, it is generally believed that the defense against Mycobacterium leprae (M. leprae) is largely dependent on cell-mediated immunity (CMI) and there is an accumulating evidence that the patients with lepromatous leprosy have not only defective CMI specific for M. leprae, but also have generalized impairment of CMI. In contrast, the humoral immune reactivity, both specific and nonspecific, have been found to be normal or slightly increased. Recently, several investigators have enumerated the peripheral blood T and B lympocytes in patients with leprosy; however, there is no agreement as to the results. Furthermore, leprosy has been found to differ in its clinicai manifestations and immunological behaviors in different geographic areas and races. Nevertheless, there is yet no report in Korea concerning the T and B lymphocyte enumeration. The authors considered it is necessary to enumerate the peripheral blood T and B lymphocytes in Korean patients with leprosy to evaluate the immune status and the differences in the immunologic reactivity between the lepromatous and the tuberculoid spectrum of leprosy. (countinued..)

peripheral Blood T Lymphocytes in parients with psoriasis / 대한피부과학회지

Recent immunological investigations have demonstrated that the patients with psoriasis have various humoral and cellular immune abnormalities, such as increased serum IgG, IgE and secretory IgA, anti-IgC factor in psoriatic lesions, in peripheral blood lymphocytes and in serum, rhumatoid-like factors in IgA and IgG classes of immunoglobulins, antinuclear antibodies (ANA; reacting with the basal cell nuclei of uninvolved skin., anti-stratum corneum antibody and complements in psoriatic scales, immuoglobulin and complement bearing polymorphonuclear leucocytes in the Muro microabscess. These abnormal findings are enough to suggest an autoimmune mechanism in the pathogenesis of psoriasis. Several investigators have also reported the results of T cell enumeration in the peripheral blood in psoriatic patients. However, the results are not in general agreement,. Thee present study was undertaken to clarify any abnormality in the proportion of T cells in the peripheral blood in psoriatic patients. Forty-one patients with active psoriasis registered at the Department of Dermatology, Seoul National University Hospital entered this study from May, 1979 through April, 1980. Twelve healthy medical and paramedical personel the comprised the control group. Active and total T cells were enumerated by the method of E-rosetting technique, and the results were as follows. 1, in normal controls, the active and total T celIs identified as E rosetteforming cells accounted for 61.6+7.4% and 68.1+8.9% of the total lymphocyte population, respectively. 2. In patients with psoriasis, significant decrease of active T cells (54. 2,+11.0%,p<0.005) and total T cells (62.2+11.2%, p<0.05) was observed. More profound reduction of T cells was noted in patients with wide spread psoriasis than those with limited extent.

A Study of Effect of Diabetic Sera on in Vitro Growth of Candida albicans / 대한피부과학회지

It has been well known that human sera exert an inhibitory effect on the growth of dermatophytes and candida. Several different inhibitory serum factors have been isolated and investigated by some workers. In clinical aspects, the patients with diabetes are prone to derrnatophyte and candida infections. The authors attempted to investigate whether diabetic sera would have any difference in inhibitory effect on in vitro candidial growth compared with norma1 sera, Fifty and 30 serum samples were obtained from patients with diabetes and bealtby adults respectively, Aliquots of candida albicans were mcubated in the test tubes containing nutrient kiroth with addition of eacb serum. Iron was also added to saturate transferrin in the serum. The degree of candidial growth was determined by the change of percent transmission on spectrophotometry of the candida-inoculated nutrient broth in the test tubes during 24-hour incubation. The results were as followings: 1. The sera from both patients with diabetes and healthy adults were found to retain the inhibitory effect on in vitro candidial growth, though the transferrin, a known serum inhibitor, was removed by saturation with iron. 2. The inhibitory effect of diabetic sera was weaker than that of normal sera. 3. The degree of the inhibitory effect of each diabetic serum was not correlated with corresponding serum glucose level.