陳旧型全身性有鉤嚢虫症の1例(続報)―石灰化病巣のミトコンドリアDNA解析―

出版社版前報にて報告の全身性有鈎嚢虫症例の石灰化病巣の病理組織学的検査用に作製されたパラフィン包埋標本を用いてミトコンドリアDNA解析を試みた。パラフィンブロックの切片からDNA Isolator PS kitを用いてDNAを抽出し、PCRで増幅産物の塩基配列解析を行った。その結果、有鈎嚢虫遺伝子が検出され、本症例の石灰化病巣が有鈎嚢虫(アジア型)に起因することが判明した。以上より強い石灰化のため有鈎嚢虫の特徴的な形態観察が困難な症例においてはミトコンドリアDNA解析が有鈎嚢虫症の確定診断に極めて有用と考えられた

Broad-Band Spectroscopy of Hercules X-1 with Suzaku

Hercules X-1 was observed with Suzaku in the main-on state from 2005 to 2010. The 0.4- 100 keV wide-band spectra obtained in four observations showed a broad hump around 4-9 keV in addition to narrow Fe lines at 6.4 and 6.7 keV. The hump was seen in all the four observations regardless of the selection of the continuum models. Thus it is considered a stable and intrinsic spectral feature in Her X-1. The broad hump lacked a sharp structure like an absorption edge. Thus it was represented by two different spectral models: an ionized partial covering or an additional broad line at 6.5 keV. The former required a persistently existing ionized absorber, whose origin was unclear. In the latter case, the Gaussian fitting of the 6.5-keV line needs a large width of sigma = 1.0-1.5 keV and a large equivalent width of 400-900 eV. If the broad line originates from Fe fluorescence of accreting matter, its large width may be explained by the Doppler broadening in the accretion flow. However, the large equivalent width may be inconsistent with a simple accretion geometry