中药方剂缓解育龄女性子宫切除后更年期症状的研究

目的:探讨中药方剂缓解育龄女性子宫切除后更年期症状的效果及作用机理。方法:选取因子宫良性病变行子宫全切术的病例98例随机分为2组,分别为观察组、对照组。观察组术后在西医抗炎、止血、补液治疗的基础上配合中药方剂治疗。对照组术后只行西医抗炎、止血、补液治疗。结果:2组术后2个月,对其进行更年期临床症状测定,2组比较差异有统计学意义(P<0.05)。结论:中药方剂缓解育龄女性子宫切除后更年期症状的效果有可行性且效果颇佳。     

自制瘦身调脂胶囊治疗单纯性肥胖症临床研究

目的:观察瘦身调脂胶囊治疗单纯性肥胖症(simple-obesity)的临床疗效。方法:将79例患者随机分为2组,治疗组给予瘦身调脂胶囊,对照组给予曲美胶囊,疗程2个月。结果:2组有明显差异(P<0.05),经Ridit法的u检验,治疗组和对照组比较没有明显区别(P>0.05)。结论:瘦身调脂胶囊和曲美都具有较好的减肥作用。     

Antiproliferative activity and standardization of Tecomella undulata bark extract on K562 cells

Ethnopharmacological relevance

The bark of Tecomella undulata is primarily used in the treatment of syphilis, painful swellings and cancer by traditional healers. Also, it is claimed to be useful in treating urinary discharges, enlargement of spleen, leucorrhoea, leukoderma, tumors, liver disorders, gonorrhea, gout and promotes wound healing in Indian traditional system of medicine.

Aim

To establish a scientific validation for the antitumor effects of Tecomella undulata bark and explore the mechanistic pathway in chronic myeloid leukemia cell line, K562. The study was further extended to standardize the extract using quercetin as biomarker.

Methods

Induction of apoptosis by chloroform extract of Tecomella undulata bark (CTUB) was determined by MTT, Annexin V and caspase activation assays. The cell cycle analysis was done by flow cytometer and nuclear staining by DAPI. The standardization of the extract was performed through reverse phase-HPLC method under PDA detection.

Result

Results clearly showed the induction of apoptosis by CTUB in K562 cells. The effect was found to be dose dependent, having IC₅₀ of 30 μg/ml with activation of FAS, FADD, caspase 8, caspase 3/7 and fragmentation of DNA. The bioactive CTUB was determined to possess 0.03% (w/w) of quercetin.

Conclusion

The investigation clearly demonstrated the potential antitumor effect of CTUB, thereby validating the traditional claim. Quercetin, known to have anticancer activity is being reported and quantified for the first time from the bark of Tecomella undulata.     

ICP-MS测定香芍软胶囊中砷 汞 铅 镉 铜的含量

目的：采用电感耦合等离子体质谱（ICP-MS）法测定香芍软胶囊（XSSC）囊心物中砷、汞、铅、镉、铜的含量。方法：样品经微波消解，以Re为内标，以茶叶、圆白菜标准物质为质控，采用ICP-MS测定上述5种元素。结果：对于所测5种元素，标准曲线的相关系数r〉0．9996，回收率为95．8-101．6％，RSD〈5．8％。结论：本测定方法快捷、准确、灵敏度高，适用于XSSC囊心物中上述5种元素的同时测定。     

山沉香化学成分研究

目的 研究山沉香Syringa pinnatifolia干燥茎的化学成分.方法 采用硅胶、ODS、Sephadex LH-20及RP-HPLC等色谱技术对山沉香干燥茎的化学成分进行分离纯化,根据理化性质及波谱数据鉴定化合物结构.结果 从山沉香干燥茎95％乙醇提取物的醋酸乙酯部位分离得到11个化合物,分别鉴定为开环异落叶松脂醇(1)、(8R,8'R,9R)-3,3',9-三甲氧基-4,4'-二羟基-9,9'-环氧木脂素(2)、(8R,8'R,9S)-3,3',9-三甲氧基-4,4'-二羟基-9,9'-环氧木脂素(3)、左旋松脂醇(4)、(8R,8'R,9'S)-3,3',9 '-三甲氧基-4,4 '-二羟基-9,9'-环氧木脂素(5)、(8R,8'R,9'R)-3,3',9'-三甲氧基-4,4'-二羟基-9,9'-环氧木脂素(6)、(9S)-9-O-methylcubebin (7)、邻苯二甲酸二丁酯(8)、菲律宾胡椒素Ⅵ (9)、蛇菰宁(10)、落叶松萘酮(11).结论 化合物2～11均为首次从该植物中分离得到.     

Deacetylation of 4-(5-acetylamino-2-furyl)thiazole and formation of 1-(4-thiazolyl)-3-cyano-1-propanone by rat liver tissues

The reductive metabolism of the rat carcinogen 4-(5-nitro-2furyl)thiazole (NFT) to 1-4-thiazolyl)-3-cyano-1-propanone (TCP) is reported. Formation of TCP from NFT involved furan ring fission. This could have occurred through involvement of either aminofuran or N-hydroxylaminofuran as precursors. To examine if 4-(5-amino-2-furyl)thiazole is a precursor for TCP, a stable model compound, 4-(5-acetylamino-2-furyl)thiazole (AAFT), was prepared and subjected to enzymatic deacetylation, using rat liver tissue homogenates. AAFT was synthesized by catalytic hydrogenation of NFT with 5% palladium on activated carbon, followed by acetylation with acetic anhydride. AAFT, a white crystalline powder, melted at 168–170°, had an extinction coefficient of 17.9 mM^?1 cm^?1 at 293 nm in ethyl acetate, and exhibited spectroscopic and mass spectral characteristics consistent with the assigned structure. Incubation with rat liver 10,000 g supernatant preparations resulted in the biotransformation of AAFT as evidenced by a decrease in absorption at 290 nm. Incubation of ¹⁴C-labeled AAFT followed by extraction with chloroform-diethyl ether (1:1) resulted in the recovery of a major portion (56%) of the radioactivity in the organic phase when the label was at the 2-position of the thiazole ring, while the major amount (82%) of radioactivity was recovered in the aqueous phase when the 1-¹⁴C-acetyl group was labeled. The radioactivity from the aqueous phase was extractable into the organic phase following acidification to pH 1, an observation consistent with deacetylation. Furthermore, the deacetylation product exhibited a mass spectrum, and retention times in gas and high pressure liquid chromatography, similar to those of synthetic TCP. These data establish 4-(5-amino-2-furyl)thiazole, derived from AAFT by deacetylation, as a precursor for TCP.     

A novel compound RS-0466 reverses beta-amyloid-induced cytotoxicity through the Akt signaling pathway in vitro

In order to determine whether 5-[bis(carboxymethyl) amino]-2-carboxy4-cyano-3-thiopheneacetic acid distrontium salt (S12911-2) inhibits bone resorption by acting on the differentiation and/or function of osteoclasts, its effects were assessed on the 1,25-dihydroxyvitamin D(3)-induced expression of carbonic anhydrase II and vitronectin receptor in chicken bone marrow cells, and on the resorbing activity of authentic rat osteoclasts cultured on bone slices. S12911-2 dose-dependently inhibited, after a 6-day exposure, the expression of carbonic anhydrase II and vitronectin receptor in stimulated osteoclasts (46% and 40%, respectively, at 10(-3) M Sr(2+), P<0.05). A pre-incubation of bone slices with S12911-2 induced a dose-dependent inhibition of bone resorbing activity from 32% at 10(-4) M Sr(2+) to 66% at 10(-3) M Sr(2+) (P<0.05 in each case). A continuous incubation (10(-3) M Sr(2+)) induced a greater inhibition of bone resorbing activity (73%, P<0.05). The inhibition of bone resorption obtained specifically with S12911-2 is related to an inhibition of the differentiation and resorbing activity of the osteoclasts.     

5-HT与不同证型原发性肛门瘙痒症的相关性研究

目的：初步探讨不同证型的原发性肛门瘙痒症患者血清中5-HT的变化。方法：将60例原发性肛门瘙痒症患者按中医辨证分型分为风热挟湿证、血虚化燥证、血瘀生风讧3组,每组20例;另选择20例经体检健康者为正常对照组。4组研究对象空腹抽取静脉血,检测比较5-HT含量。结果：肛门瘙痒症患者外周血5-HT平均水平低于正常对照组,差异有统计学意义（P〈0．05）;3种不同证型患者5-HT均低于正常对照组,风热挟湿组患者5-HT高于血虚化燥组患者,差异均有统计学意义（P〈0．05）,血虚化燥和血瘀生风组组间比较差异无统计学意义（P〉0．05）。结论：不同证型原发性肛门瘙痒症患者的5-HT均低于正常,说明该疾病可能是一种神经源性疾病;且5-HT含量随其证型的不同亦有所变化,但需进一步研究证实。     

川芎嗪干预BMNCs移植对MCAO小鼠血清TGF—β1的影响

目的观察川芎嗪干预BMNCs移植对MCAO小鼠血清TGF-β1的影响。方法采用线栓法制作小鼠MCAO缺血再灌注模型,分离同种系小鼠的骨髓单个核细胞,尾静脉注射BMNCs于造模成功的MCAO小鼠体内,腹腔注射川芎嗪注射液进行干预,以ELISA法测定血清TGF-β1水平。结果川芎嗪干预的BMNCs移植能够使血清TGF-β1值降低更为显著（P〈0．05）。结论川芎嗪干预的BMNCs移植更能促进TGF-β1向脑缝缸局部转移,改善小鼠脑缺血症状。     

陆德铭治疗乳腺癌术后转移的经验

陆徳铭教授认为乳腺癌患者术后转移多以正虚为其本,余毒旁窜为其标,治疗谨守扶正祛邪大法,以自拟乳癌术后方健脾益气、调摄冲任扶其正,根据病位,随证选用清热解毒、化痰散结之品祛余毒。