Analysis of Quality Changes of Platycladi Semen Before and After Deterioration Based on HS-SPME/GC-MS and Electronic Sensory Technology / 中国实验方剂学杂志

ObjectiveTo analyze the quality changes of Platycladi Semen before and after the deterioration of moth-eaten and rancidity during storage. MethodFour types samples of Platycladi Semen， including normal， moth-eaten， oxidative rancidity and hydrolytic rancidity， were determined for volatile components， odor， and taste based on headspace solid phase microextraction/gas chromatography-mass spectrometry （HS-SPME/GC-MS） and electronic sensory techniques such as electronic nose and electronic tongue. Volatile components were identified by searching the database and manual comparison， the odor and taste were determined by the response values of the electronic nose and electronic tongue sensors， and the difference between samples before and after deterioration was studied by multivariate statistical analysis. ResultA total of 85 compounds were identified in Platycladi Semen samples. Compared with the normal samples， the number of volatile compounds in samples after hydrolytic rancidity decreased by 5， the number of volatile compounds in samples after moth-eaten and oxidative rancidity increased by 1 and 21， respectively. Aldehydes and acids accounted for majority of types. Among them， the contents of N-hexanoic acid， hexanal and propionic acid in the samples of oxidative rancidity reached 11.49%， 10.21% and 7.52%， which became the key indicators of rancidity. There was significant variance among the odor components corresponding to W1W， W2W and W1S sensors by electronic nose analysis. It was indicated that the value of sourness in deteriorated samples generally increased by mean of electronic tongue analysis. Compared with normal samples， the moth-eaten samples had changed slightly and rancidity samples had changed significantly especially oxidative rancidity samples of volatile components， odor and taste by multivariate statistical analysis. ConclusionIn terms of Platycladi Semen， the oxidative rancidity caused by nature storage for 12 months has the greatest impact on the quality. Therefore， it should be mainly to prevent oxidative rancidity to ensure the quality of Platycladi Semen.

A Case of Nail-Patella Syndrome Who Presented with Characteristic Electron Microscopic Findings / 대한신장학회잡지

Nail-patella syndrome is a relatively rare autosomal dominant disorder characterized by dysplastic nail, hypoplastic or absent patella, and dislocation of radial head and iliac horns. In addition, renal abnormalities have been reported. The usual clinical signs of the renal involvement are asymptomatic proteinuria, microscopic hematuria, and in some cases progression to end stage renal disease. We present the case of adult with nail-patella syndrome, who developed proteinuria. Electron microscopy revealed irregular thickening of the glomerular basement membrane with areas of rarefaction, giving rise to a pathognomonic "moth-eaten" appearance.

The clinical-pathological characteristics and prognosis of IgA nephropathy patients with moth-eaten GBM lesions / 中国实用内科杂志

Objective To investigate the clinical and pathological characteristics of IgAN with moth-eaten lesions of GBM.Methods Seven hundred and fifty-six primary IgAN patients(from 1997.1 to 2003.12)were divided into two groups according to the ultrastructural changes of GBM:the IgAN with moth-eaten GBM lesions group(24 cases)and the IgAN without moth-eaten GBM lesions group(101 cases randomly selected).The moth-eaten GBM lesions revealed a local dilatation of irregular outline.Small fragments of the splitting or branching lamina densa were occasionally seen in the swollen GBM.Results The incidence of moth-eaten GBM lesions in IgAN were 3.1%.There were more severe hematuria and proteinuria[(3.5?2.5)g/d vs(2.1?2.4)g/d]and higher percentage of glomerular sclerosis(62.5% vs 49.5%)in moth-eaten GBM lesions group than in the non-moth-eaten GBM lesions group(P﹤0.05).During mean 27 months'follow-up in the 17 patients,none of them showed worse outcome.Conclusion This result suggests that moth-eaten GBM lesions relate to more severe clinical manifestations and pathological changes but further studies are required to clarify the influence of moth-eaten GBM lesions on the prognosis of IgAN.