The Binding of Different Lectins on Peripheral Blood Mononuclear Cells from Patients with Chronic Inflammatory and Malignant Diseases

Peripheral blood mononuclear cells from patients with multiple myeloma, gastrointestinal tumors, and inflammatory bowel disease were analyzed for binding of various lectins. The results demonstrated that in most of the patients with multiple myeloma a significantly increased percentage of cells positive for Lotus tetragonolobus agglutinin (LTA), peanut agglutinin (PNA), soybean agglutinin (SBA), and wheat germ agglutinin (WGA), and a decreased number of Agaricus bisporus agglutinin (ABA) positive cells were present as compared to a normal control group. This could not be shown in malignant or inflammatory disorders of the gastrointestinal tract where only some patients exhibited an increased PNA and LTA binding, respectively. Patients with the systemic malignant disease differed from patients with solid localized tumors by a significantly altered number of ABA, LTA and SBA-positive peripheral blood mononuclear cells. Double fluorescence studies using monoclonal antibodies and lectins revealed that most of the cells expressing receptors for ABA had also receptors for OKT3, whereas most of the cells with receptors for LTA, PNA SBA, and WGA were found to be positive for OKM.     

金莲花活性成分研究及其应用

金莲花为毛莨科草本植物的干燥花,其有效成分为黄酮类,具有抗菌和抗病毒作用,现已从中分离出牡荆苷、荭草苷等化学成分。从药理学、临床医学及应用价值等方面对金莲花进行研究,为其更好地开发利用提供科学依据。     

马桑寄生及马桑子中内酯成分分析方法的研究

生药乙醇提取液经聚酰胺柱净化,在硅胶G薄层上,环己烷—乙酸乙酯(1:1)为展开剂,分离了马桑毒素(A)、羟基马桑毒素(B)、马桑亭(C)及另一未知内酯(D),用香草醛—硫酸的乙醇溶液显色后,薄层光密度法测定。本法显色灵敏、稳定,A,B,C在生药中的回收率分别为96.3±5.1,97.7±4.7和97.4±4.6％。用本法测定了马桑寄生叶、马桑子及其注射液以及马桑叶中所含以上内酯成分。     

生地黄中环烯醚萜苷类的纯化分离工艺

目的:寻找有效纯化分离生地黄中环烯醚萜苷类的方法.方法:生地黄水提物用高效液相色谱法,以梓醇为其环烯醚萜苷类的测定指标,比较101 果汁澄清剂和科阳1＋1天然澄清剂的纯化效果,以及乙醇和非极性大孔吸附树脂的分离效果.结果:生地黄水提物以科阳1＋1天然澄清剂纯化,用非极性大孔吸附树脂分离,可使其中的环烯醚萜苷类有效分离出来.结论:在工业生产中可用科阳1＋1天然澄清剂与非极性大孔吸附树脂联合应用来纯化分离生地黄中的环烯醚萜苷类.     

干姜药材不同提取液HPLC-MSD指纹图谱研究

目的 对干姜药材不同提取液高效液相-质谱检测器(HPLC-MSD)总离子流色谱指纹图谱的方法学进行评价.方法 确定试验条件并进行方法学考察,色谱条件:Agilent Zorbax SB C18色谱柱(4.6 μm×250.0 μm,5.0 μm);流动相A相为乙腈,B相为水,梯度洗脱;流速1.0 ml/min,柱后分流;柱温25 ℃;进样量10 μl.质谱条件:大气压电离-电喷雾电离(API-ESI)离子源,正离子检测模式,质荷比200~1200,干燥气(N2)流速10 L/min,雾化气压力0.58 mmHg(30 psig),干燥气温度350℃,裂解电压70 V,毛细管电压3500 V.结果 干姜药材HPLC-MSD总离子流色谱指纹图谱具有较好的稳定性、精密度和重复性,相对保留时间和相对峰面积的相对标准偏差均＜3.0%.干姜药材甲醇提取液HPLC-MSD总离子流指纹图谱中色谱峰分离较好,确定了20个特征色谱峰;干姜药材水煎液中色谱峰明显少于甲醇提取液,色谱图中仅检测到4~8号色谱峰.结论 本研究可为干姜药材指纹图谱的系统研究提供有益借鉴,同时有助于干姜药材的质量控制和评价.     

复方丹参输卵管灌注液中枯矾含量的测定

目的对自制复方丹参输卵管灌注液中枯矾的含量进行测定。方法用EDTA络合滴定法对枯矾进行定量分析。结果 3批样品中含量均大于0.5mg/ml,平均回收率为98.16%,RSD为0.21%。结论本法操作简便,重复性好,能有效地控制本品的质量。     

Hepatitis B viral load in dried blood spots: A validation study in Zambia

BackgroundAccess to hepatitis B viral load (VL) testing is poor in sub-Saharan Africa (SSA) due to economic and logistical reasons.ObjectivesTo demonstrate the feasibility of testing dried blood spots (DBS) for hepatitis B virus (HBV) VL in a laboratory in Lusaka, Zambia, and to compare HBV VLs between DBS and plasma samples.Study designPaired plasma and DBS samples from HIV-HBV co-infected Zambian adults were analyzed for HBV VL using the COBAS AmpliPrep/COBAS TaqMan HBV test (Version 2.0) and for HBV genotype by direct sequencing. We used Bland-Altman analysis to compare VLs between sample types and by genotype. Logistic regression analysis was conducted to assess the probability of an undetectable DBS result by plasma VL.ResultsAmong 68 participants, median age was 34 years, 61.8% were men, and median plasma HBV VL was 3.98 log IU/ml (interquartile range, 2.04–5.95). Among sequenced viruses, 28 were genotype A1 and 27 were genotype E. Bland–Altman plots suggested strong agreement between DBS and plasma VLs. DBS VLs were on average 1.59 log IU/ml lower than plasma with 95% limits of agreement of −2.40 to −0.83 log IU/ml. At a plasma VL ≥2,000 IU/ml, the probability of an undetectable DBS result was 1.8% (95% CI: 0.5–6.6). At plasma VL ≥20,000 IU/ml this probability reduced to 0.2% (95% CI: 0.03–1.7).ConclusionsIn a Zambian laboratory, we observed strong agreement between DBS and plasma VLs and high sensitivity in DBS at plasma VL ≥2,000 IU/ml. As HBV treatment expands, DBS could increase access to HBV VL testing and care in SSA settings.     

Presence of cytomegalovirus in the perilymphatic fluid of patients with profound sensorineural hearing loss caused by congenital cytomegalovirus infection

Conclusion: Not all patients diagnosed with congenital infection using umbilical cord assay were found to be positive for CMV-DNA by perilymphatic fluid assay. In addition, a CMV-DNA-positive result was observed in one patient who had not been diagnosed with congenital infection. Sampling of perilymphatic fluid from a large population of patients with congenital SNHL caused by congenital CMV infection or of unknown etiology is required to determine the prevalence of CMV-related profound HL. Objectives: Sensorineural hearing loss (SNHL) is one of the most frequent manifestations in patients with congenital cytomegalovirus (CMV) infection. Using dried umbilical cord, a PCR-based assay was recently developed for the retrospective detection of congenital CMV infection. This study analyzed the presence of CMV in the perilymphatic fluid and evaluated differences in the effect of cochlear implantation between CMV-positive and -negative groups. Method: Perilymphatic fluid was collected from each patient at the time of cochlear implantation and analyzed for the presence of CMV using a PCR method. Results: The perilymphatic fluid in two of the five patients suffering from congenital CMV infection and in one of the 17 patients without congenital CMV infection was found to be positive for CMV.