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PubMed · 9889661

[Localized diffuse pulmonary AL-amyloidosis].

J Abdulla·N Maltboek·H Birgens
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Abstract

A 56 year-old woman was admitted due to exertional dyspnoea. Her chest x-ray and CT scanning showed widespread diffuse infiltrative changes in both lungs, associated with a pronounced decrease in diffusion capacity. Transbronchial biopsies showed primary (AL) amyloidosis. Systemic AL-amyloidosis was excluded and diagnosis of localised diffuse parenchymal pulmonary amyloidosis was established. Treatment with prednisolone and melphalan for one year has stabilised the condition. Lung transplantation will be considered in case of deterioration.

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AmyloidosisAnti-Inflammatory AgentsFemaleHumansLungLung DiseasesMelphalanMiddle AgedPrednisoloneTomography, X-Ray ComputedCase ReportsJournal Article

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J Abdulla, N Maltboek, H Birgens. 1998-12-14. [Localized diffuse pulmonary AL-amyloidosis].. https://pubmed.ncbi.nlm.nih.gov/9889661/

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Schistosoma-induced amyloidosis in hamsters is gender-dependent.

BACKGROUND: A high serum level of female protein (FP), found to be a constituent of Syrian hamster amyloid was associated with enhanced amyloidosis. In this work, we studied the sex-limited factors in the induction of amyloidosis in Syrian hamsters infected with either Schistosoma mansoni or S. hematobium cercariae. METHODS: Hamsters were infected with different species of schistosome cercariae and sacrificed after different time periods of infection. Kidney and liver specimens were processed in paraffin, stained with Congo-red and examined by ordinary light and polarized light microscopy. RESULTS: Statistical analysis showed a significant difference in intensity of kidney and liver amyloid deposits (P<0.002 & <0.007 respectively) between females and male hamsters with extensive deposits in the former. Amyloid deposits were correlated significantly to the duration of infection (P<0.001) than the load of worm recovered. CONCLUSION: From this study, we conclude that, in hamster model, Schistosoma-induced amyloidosis is enhanced in females than male hamsters. This may be due to the high serum level of FP that is normally detected in females. As an experimental model for schistosomal nephropathy, we recommend to use male hamsters instead of females to minimize the effect of amyloid deposits, which may mask other pathological changes associated with schistosomal infection.

Amyloidosis↗