心脑健胶囊的高效液相色谱法测定

目的：建立测定心脑健胶囊的高效液相色谱法。方法：以Ｎｏｖａ－ｐａｃｋ Ｃ１８为分析柱，甲醇－０．０４ｍｏｌ／Ｌ磷酸－乙腈为流动相，检测波长：２５４ｎｍ，峰面积外标法。结果：回收率与线性范围分别为；ＥＧＣＧ；ＥＣＧ；ＧＣＧ；ＥＧＣ。结论；本法简便，适合心脑健胶囊的含量测定。     

氧氟沙星及其胶囊的HPLC测定

改进了氧氟沙星及其胶囊的ＨＰＬＣ测定条件。与卫生部药品标准方法相比，柱放大为提高，拖尾现象减小。     

C3 Deposition in IgA Nephropathy in Children and Adolescents

The aim of this study was to assess the significance of C3 deposition in IgA nephropathy in children and adolescents. One hundred and two patients aged 5–21 years (57 male and 45 female) were studied. The findings of C3 deposition were classified into 8 groups by immunofluorescent (IF) pattern and intensity as follows: group MC3+ (N = 12): mesangiocapillary pattern and 3+ in intensity; group MC2+ (N = 13): mesangiocapillary and 2+; group MC1 + (N = 4): mesangiocapillary and 1 +; group M3+ (N = 11): mesangial and 3+; group M2+ (N = 24): mesangial and 2+; group M1 + (N=18): mesangial 1 +; group S (N = 12): only segmentally positive; and group N (N = 8): negative. Histological changes were scored semiquantitatively as an activity index (cellular proliferation, necrosis, interstitial cell infiltration, and cellular crescents) and a chronicity index (mesangial sclerosis, segmental and global glomerular sclerosis, fibrous crescents, adhesion and tubulo-interstitial change). IF findings were scored semiquantitatively and laboratory findings were also studied. The following results were obtained: 1) The scores of total activity index in MC groups were higher than in the M, S or N groups, and the greater the degree of C3 deposition, the higher the score; 2) Such result was not evident in the chronicity index; 3) High IF scores of IgG and IgM were found in the MC3+ and MC2+ groups; 4) Hematuria was more severe in MC3+ and MC2+ than in other groups, and proteinuria was more prominent in the MC than other groups. Thus the degree of C3 deposition was parallel with histological activity and urinary findings.     

Pattern of renal dysfunction in analgesic nephropathy--comparison with glomerulonephritis.

Comprehensive renal function tests were performed in 84 patients with analgesic nephropathy, 33 glomerulonephritis patients matched for creatinine clearance, and 30 control subjects. A system of 1-day renal function tests including urine microscopy, creatinine clearance, phenolsulphonphthalein excretion, urine concentration and acidification, and electrolyte excretion, was used. Patients with analgesic nephropathy were found to have significant sterile pyuria and haematuria, even those with mild renal insufficiency, significantly reduced concentrating ability and a distal acidifying defect, and a tendency to impaired sodium conservation. These function defects are consistent with the primary lesion of renal papillary necrosis in analgesic nephropathy; the detection of these defects have implications in patient management.     

IgA肾病大鼠血清IgA-纤维连接蛋白的检测及意义

目的 检测IgA肾病大鼠血清IgA-纤维连接蛋白水平，探讨其在IgA肾小球系膜沉积中的作用。方法 肝叶切除后，尾静脉注射脂多糖，制作IgA肾病大鼠模型。应用ELISA法检测血清IgA-纤维连接蛋白聚合物水平，半定量法对系膜IgA免疫荧光强度评分，二者作相关性分析。结果 IgA肾病时，血清IgA-纤维连接蛋白聚合物水平升高，并与系膜IgA沉积呈正相关。结论 IgA肾病时，血清IgA-纤维连接蛋白聚合物水平是升高的，且可能是导致IgA系膜沉积的原因之一。     

补体对免疫沉淀的抑制作用与小儿肾脏疾病的关系

以辣根过氧化物酶（PO）和抗-PO作为免疫沉淀中的抗原和抗体，用光电比色法，对78例小儿肾脏疾病血清补体对免疫沉淀的抑制作用（IIPC）进行了研究，并同时检测补体成分C3、C4。结果，正常对照IIPCOD值为0．505±0．085，急性肾小球肾炎（0．137±0．108）显著降低（P＜0．001）；慢性肾小球肾炎（0．470±0．053）改变不明显（P＞0．05）；肾病综合征（0．401±0．038）明显低下（P＜0．05）。IIPC低下的发生率依次为急性肾小球肾炎（83％）、肾病综合征（43％）、慢性肾小球肾炎（32％）。表明小儿肾小球疾病时IIPC大多降低并与疾病的活动性有关。因此认为IIPC低下在肾脏病的发生和发展中起一定作用。     

Activation of mRNA expression of collagen,collagenase and its inhibitor on renal biopsy specimens in patients with IgA nephropathy

Summary: In situ hybridization of mRNA for collagen IV, collagen VI, stromelysin (MMP-3) and TIMP1 was examined in renal biopsy specimens from patients with IgA nephropathy (IgAN) or diabetic nephropathy with various degrees of tissue damage. The majority of cells in the glomeruli expressed these mRNA almost simultaneously, but a few cells demonstrated positive expression for only one of these probes. There was a parallel relationship between the degree of tissue damage and that of mRNA expressions of these probes in patients with IgAN, while patients with diabetic nephropathy showed a reverse relationship between these two parameters. It is concluded that patients with mesangial proliferative glomerulonephritis expressed mRNA for collagen collagenase and its inhibitor in the glomeruli in parallel with the progress of tissue damage. In contrast, glomerular samples from patients with diabetic nephropathy showed that there was an inverse relationship between tissue damage and expression of mRNA. It is concluded that expression of collagen, collagenase and its inhibitor parallels the progression of glomerular changes in IgAN, but such parallel expression was not observed in patients with diabetic nephropathy.     

萘普生缓释胶囊的药代动力学和生物利用度研究

目的 通过健康受试者的双交叉试验比较萘普生缓释胶囊与普通片的药物动力学和生物利用度。方法１０位健康受试者一次服用这两种制剂５００ｍｇ，在稳态试验中８位受试者接受两种制剂５天，缓释胶囊５００ｍｇ每天一次，普通片每天两次，每次２５０ｍｇ。血药浓度用ＨＰＬＣ方法测定。结果 一次服药试验证明该缓释胶囊血药浓度上升缓慢，浓度变化平稳，Ｇｍａｘ为８５．９μｇ／ｍｌ，Ｔｐｅａｋ为６．０ｈ，而普通片的Ｃｍａｘ为１４０．４μｇ／ｍｌ，Ｔｐｅａｋ为３．２ｈ，两种制剂的生物利用度相当，缓释胶囊与普通片生物等效。通过８位健康受试者交叉连续服用萘普生缓释胶囊与普通片的稳态药代动力学研究表明，到第３天给药后已达到稳态，由第５天给药后的血药浓度测定数据计算其主要的稳态药代动力学参数，缓释胶囊的峰浓度（Ｃｍａｘ）、峰谷比和波动度（ＤＦ）明显低于普通片，这些参数分别为７３，１μｇ／ｍｌ、１．４８和３７．７ｏ；而普通片的上述参数分别为 １００．８μｇ／ｍｌ、２．５１和７８．２％。结论 奈普生缓释胶囊具有缓释作用，能较好维持血药治疗浓度。     

Sequential occurrence of IgA nephropathy and Henoch-Schönlein purpura: support for common pathogenesis

We report a patient who developed Henoch-Schönlein purpura (HSP) 13 years after he presented with IgA nephropathy (IgAN). In both HSP and IgAN renal biopsy most commonly reveals focal proliferative glomerulonephritis on light microscopy and immunofluorescence displays mesangial IgA deposits. In addition, patients with HSP or IgAN have elevated serum IgA levels, circulating IgA immune complexes, IgA-bearing lymphocytes, immunoglobulin-producing cells, and binding of IgG to glomerular components of similar molecular weight. The occurrence of both diseases in the same patient or the same families and the presence of immune abnormalities compatible with HSP or IgAN in relatives of patients with these diseases suggest a common pathogenesis.