矿泉“851”对抗疟治疗的非特异性免疫作用

感染伯氏疟原虫(P.berghe ANKA株)小鼠,经矿泉“851”及与抗疟酮合用治疗后,腹腔巨噬细胞吞噬百分率和吞噬指数明显高于感染对照组(P<0.01)。两组药均能提高小鼠单核巨噬细胞系统(MPS)对碳微粒的廓清率,其K值与对照组相比,P<0.01,MPS活性的增强程度与其疟原虫的抑制率成正相关。     

Degradation of ginseng saponins under mild acidic conditions

Ginseng saponins, ginsenosides Rg (1), Re and Rb (1), decomposed under mild acidic conditions to yield prosapogenins. The structures of the prosapogenins were investigated by (13)C-NMR spectroscopy and Rg (1)-prosapogenin II was shown to be a mixture of ginsenoside Rh (1), and its C-20 epimer, produced by hydrolysis followed by epimerization at C-20. Rg (1)-prosapogenin III, the other prosapogenin derived from ginsenoside Rg (1); was a C-25,26 hydrated derivative of Rg (1)-prosapogenin II. Re-prosapogenin II was identified as a mixture of ginsenoside Rg (2) and its C-20 epimer, and Re-prosapogenine III as a C-25,26 hydrated derivative of Re-prosapogenin II.     

Biological evaluation of Korean medicinal plants(III)

The extracts of sixty Korean plants were evaluated for their biological activities such as antitumor activities against Sarcoma 180, Leukemia SN-36 and Ehrlich ascites carcinoma, antimicrobial activities and behavioral observation in mice. The results are tabulated.     

Cultured human leukemic non-T/non-B lymphoblasts and their stimulating capacity in "one-way" mixed lymphocyte reaction: suggestive evidence for early T-cell or B-cell precursors.

It is now well recognized that a large proportion of cases with acute lymphoblastic leukemia are classified as non-T/non-B neoplastic disease. The origin of leukemic non-T/non-B cells is at present not known. It has been shown that fresh or cultured leukemic T lymphoblasts exert no stimulating capacity while leukemic B lymphoblasts exert a strong stimulation in "one-way" mixed lymphocyte reaction. It has also been shown that fresh leukemic cells from some patients with non-T/non-B acute lymphoblastic leukemia possess a strong stimulation while leukemic cells from other patients with this disease possess no stimulation on allogeneic lymphocytes. The present study shows that cultured leukemic lymphoblasts from 3 non-T/non-B cell lines (NALL-1, NALM-6 and NALM-16) consistently exert a strong stimulation on allogeneic lymphocytes. On the other hand, cultured leukemic lymphoblasts from 2 non-T/non-B cell lines (REH and KM-3) consistently fail to stimulate in "one-way" mixed lymphocyte reaction. Our data clearly support the speculation that leukemic non-T/non-B cells which possess the stimulating capacity may represent less differentiated leukemic B lymphoid cells (pre-B cells) and leukemic non-T/non-B cells which possess no stimulating capacity may represent less differentiated leukemic T lymphoid cells (per-T cells).     

Establishment and characterization of human B-lymphocytic lymphoma cell lines (BALM-3, -4 and -5); intraclonal variation in the B-cell differentiation stage.

This study describes the establishment of three non-Burkitt B-lymphoma cell lines (BALM-3, BALM-4 and BALM-5) originating from the pleural effusion of a patient with a poorly differentiated diffuse lymphocytic lymphoma. The cells of BALM-3, -4 and -5 exhibited a number of properties which distinguish them from the usual B-cell type lymphoblastoid cell lines. Thus, they lacked the Epstein-Barr virus genome and had abnormal chromosome constitutions including a 14q+ marker. The presence of the identical surface immunoglobulin isotypes (gamma and chi chain determinants), and Ia-like B-cell-associated antigen in the cultured cells and in the "fresh" lymphoma cells in vivo was demonstrated. These findings strongly suggested that these cell lines have B-cell characteristics and were derived from the original tumor cell population. BALM-5 cells, however, showed somewhat different growth, cell surface marker profile and functional characteristics compared to those of BALM-3, and -4 cells. These variations suggest that the BALM-5 cells were probably at different stages of B-cell maturation than those of BALM-3 and -4, even though all three cell lines (established in three separate flasks) originated from the cells of the same pleural effusion of a lymphoma with monoclonal B-cell characteristics.     

Inhibition of mixed lymphocyte reaction by thoracic duct lymph: removal of inhibitory effect by thoracic duct drainage in lung cancer.

The inhibitory effect of the thoracic duct lymph of a patient with lung cancer on the "one-way" mixed lymphocyte reaction without cytoxicity is unequivocally demonstrated. The effect seems to be dose related. A moderate inhibition of mixed lymphocyte reaction is still observed, even if the responding cells are preincubated in the thoracic duct lymph for 1 hr only prior to the addition of stimulating cells. The inhibitory effect of thoracic duct lymph on the mixed lymphocyte reaction is no longer evident when the material is added 1-4 days after the beginning of culture. These observations suggest that the mechanism of the inhibitory effect of thoracic duct lymph may be a simple attachment of inhibitory factors to the receptor sites on the responding lymphocytes, causing interference in cell to cell interaction. The inhibitory effect of thoracic duct lymph collected 1 week after the thoracic duct drainage on mixed lymphocyte reaction is significantly lower than that of thoracic duct lymph collected at the beginning of the procedure. This indicates that the blocking effect of thoracic duct lymph can be easily removed by this technique; which is technically feasible in man. The interrelationship of the tumor-specific blocking factor, thoracic duct drainage, and tumor growth pattern are discussed with respect to the potential usefulness of this procedure as adjuvant immunotherapy in the management of patients with neoplastic diseases.     

BDNF blocks caspase-3 activation in neonatal hypoxia-ischemia

Hypoxic-ischemic (H-I) injury to the brain in the perinatal period often leads to significant long-term neurological deficits. In a model of neonatal H-I injury in postnatal day 7 rats, our previous data have shown that cell death with features of apoptosis is prominent between 6 and 24 h after H-I and that neurotrophins, particularly BDNF, can markedly protect against tissue loss. During brain development, caspase-3 is required for normal levels of programmed cell death. Utilizing an antibody specific for the activated form of caspase-3, CM1, we now show that caspase-3 is specifically activated in neuronal cell bodies and their processes beginning at 6 h and peaking 24 h following unilateral carotid ligation and exposure to hypoxia in postnatal day 7 rats. Caspase-3 activation began to occur in cortex at 6 h and in striatum and hippocampus at 12-18 h. Caspase-3 activation was also observed in developing oligodendrocytes. Intracerebroventricular injection of BDNF prior to H-I injury almost completely abolished evidence of H-I-induced caspase-3 activation in vivo. Utilizing a specific molecular marker of an apoptotic pathway, these findings demonstrate that H-I injury to the developing brain is a strong apoptotic stimulus leading to caspase-3 activation, that BDNF can block this process in vivo, and that the ability of BDNF to inhibit caspase activation and subsequent apoptosis likely accounts in large part for its protection against neuronal injury in this model.     

喉咽灵口服液的体外抗菌作用

目的：探讨喉咽灵口服液的体外抗菌作用。方法：为临床分离细菌为受试菌，采用连续倍比稀释法，观察喉咽灵口服液的最低抑菌浓度和最低杀菌浓度。结果：喉咽灵口服液对不同细菌的最小抑菌浓度是成品浓度64－128倍，最小杀菌浓度是成品浓度32－64倍。结论：喉咽灵口服液对所有受试菌均有不同程度的抑菌和杀菌作用，且抗菌谱广，抗菌作用强。     

板蓝根抑菌抗炎活性部位的评价

目的：评价和比较板蓝根5个化学部位抑菌、抗炎活性的强弱。方法：采用管碟法测定板蓝根不同化学部位对于金黄色葡萄球菌、铜绿假单胞菌的敏感性，观察对二甲苯所致小鼠耳廓肿胀的抑制作用。结果：板蓝根Ⅴ部位体外抑菌活性最强，Ⅴ部位具有显著的抗炎活性。结论：板蓝根中高极性成分具有很强的药理活性，是其发挥清热解毒功效的物质基础。