Atrial fibrillation is one of the commonest cardiac arrhythmia in the elderly, the incidence increased with increasing ages. Atrial fibrillation can induce severe cardiac insufficiency and thromboembolism, stroke is also a very important complication with high morbidity and mortality. Thus it is very necessary to pay special attention to the study of atrial fibrillation in the field of geriatric cardiovascular diseases.

Leu 7 monoclonal antibody and immunohistochemical technic were used to study the distribution of NK cells in human lymph node, tonsil, spleen and thymus. The results indicated that the NK cells predominately distributed in B cell area, such as germinal center of secondary follicle, which occured in lymph node and tonsil. A few NK cells were found in the paracortex and medulla of lymph node. In the spleen, the NK cells mainly located in the germinal center of splenic nodules and in the periphery of white pulp. However, the NK cells were never shown in the perarterial lymphatic sheath, some NK cells also scattered in the pulp cord and sinuses of red pulp. In the thymus, the NK cells were restricted in the medulla, and the number of NK cells reduced in the aged thymus. In addition, the Leu 7 antibody was reacted with epithelial cells, which located in the cortical periphery or thymic lobule. The morphology of NK cells in different lymphoid organs was similar. The staining intensity of Leu 7 antibody was identical both in the frozen and paraffin sections.

9 fetal and 7 juvenile thymuses were used to identify the asteroid cells on the frozen sections by immunohistochemical method. The results indicated that the thymic medulla, except B cells, contains a type of larger cells with small cytoplasmic processes, which has in common with B cell antigens, such as 1gM, 1gA, Leu14, BA-1, HLA-DR and light chain-Kappa, but they do not express OKB-2. Moreover, the asteroid cells do not reactive with T cell antibody and follicular dendritic cell antibody, and lack of ANAE activity. The asteroid cells in the fetal thymus are constantly located in the corticomedullary region, while, in the juveniles, the asteroid cells are mainly distributed within medulla or in the vicinity of Hassall's corpuscles. As regards the function of asteroid cells is not clear. Based on their distribution, it is probably associated with T cell maturation. On the morphologic ground, the asteroid cells are similar to interdigitating cells in thymus, the relationship between them has been discussed.

Chromoblastomycosis, a chronic fungal infection of the skin and subcutaneous tissue, is known to be difficult to treat. Recently itraconazole has proved effective for treatment of this infection, but requires a prolonged treatment course. We experienced a case of chromoblastomycosis caused by Fonsecaea pedrosoi in a 68-year-old Korean man showing a complete resolution with a short course of oral itraconazole, 200 mg daily, for six weeks.
Aged ; Chromoblastomycosis* ; Humans ; Itraconazole* ; Skin ; Subcutaneous Tissue

ObjectiveTo evaluate the clinical effect of sulfasalazine capsulae enterosolubilis with Yunnanbaiyao for ulcerative colitis. MethodsSixty patients with ulcerative colitis were randomly divided into two groups,thirty cases in treatment group and thirty cases in control group. Patients in treatment group received sulfasalazine capsulae enterosolubilis with Ytmnanbaiyao orally,patients in control group were given sulfasalazine capsulae enterosolubilis orally only. ResultsThe total effective rate of treatment group was 90. 0％ ,clinical recovery rate was 73.3％ ;The total effective rate of control group was 66.7％ ,clinical recovery rate was 43.3％ ,the differences was statistically significant(P ＜0.05). ConclusionThe clinical effect of sulfasalazine capsulae enterosolubilis with Yunnanbaiyao for ulcerative colitis was good,and should be used furthedy.

The morphology and distribution of pre-B cells and the changes of antigens during the differentiation from pre-B to B cells in fetal livers of different gestational ages were studied by means of immunohistochemical technique. The results revealed that at earlyfetal stage(between 9 and 29 weeks), the liver contained numerous pre-B cells, which were different in shapes and sizes, but their phenotypic expression was identical, for instance, 1gM, BA-1, HLA-DR and TdT all appeared positive. Most of pre-B cells were scattered in perisinusoidal space, only a few of them were present in sinusoids or around the blood vessels. After the 13the week, 1gD and 1gA positive cells began to appear, and the number of OKB-2 and Leul4 positive cells was markedly increased subsquently. Meanwhile, the number of the HLA-DR, Kappa and Lambda positive cells was increased accordingly, which indicated that the B cells became more mature. In view of absence of antigenic stimulation, the B cells failed to develop into plasma cells. Moreover, it was observed that the differentiation and maturation of the B cells in the fetal liver seemed to be independent on the T cells, because the B cells continued to generate even if the T cells were absent at early stage of fetal liver. It showed that the differentiation and the development of the B cells in the fetuses were mainly dependent on the liver microenvironment. This study provided an evidence for treatment of aplastic anemia and agammaglobulinemia with fetal liver between 9 and 20 weeks old.

Tumor cells leads to enhanced glucose uptake and the conversion of a larger fraction of pyruvate into lactate even under the circumstance of abundant oxygen. This phenomenon of aerobic glycolysis is known as the Warburg effect. Lactic acid, as an important tool for tumor cells to modify the tumor microenvironment, promotes the process of tumor invasion and metastasis, and contributes to tumor development by inducing and recruiting immunosuppression-related cells and molecules. Lactic acid could efflux out of the cancer cells via the monocarboxylate transporters to prevent intracellular acidification. Lactate can inhibit the cytolytic activity of T cells and natural killer (NK) cells, promoting the differentiation of tolerogenic interleukin 10 (IL-10)-producing dendritic cells. Moreover, the lactate-derived lactylation of histone lysine residues can promote macrophage polarization toward the M2-like phenotype, suppressing the immune response within the tumor microenvironment. In this review, we discuss the role of lactate as an immunosuppressor molecule that contributes to tumor evasion from the aspects of lactic acid metabolism and its effect on immune cells. And we explore the possibility of targeting potential targets in lactate metabolism for tumor treatment. At last, we proposed a tumor immunotherapy strategy by inhibiting the pathway of aerobic glycolysis and proteins associated with the production and transport of lactic acid.

Diagnosis, Differential ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; therapeutic use ; Humans ; Male ; Medicine, Chinese Traditional ; Middle Aged ; Phytotherapy ; Subarachnoid Hemorrhage ; diagnosis ; drug therapy ; Syndrome ; Vasodilator Agents ; therapeutic use

The incidence of hypoglycemic events in patients with type 2 diabetes around the period of fasting in Ramadan was compared under the treatment with combined insulin glargine and glimepiride. The results showed that the number of hypoglycemic events in patients with type 2 diabetes before, during and after the period of fasting in Ramadan was not different (P=0.238).