The year's best pictures from the world of medicine
[ 2009-10-21 11:41 ]
10 鐮狀細(xì)胞貧血癥血紅細(xì)胞
這張圖片顯示了兩個血紅細(xì)胞。背景中顯示的一個正常的紅細(xì)胞,而前景顯示的是一個受到鐮狀細(xì)胞貧血癥感染侵蝕的血紅細(xì)胞。鐮狀細(xì)胞貧血癥是一種血液疾病,可導(dǎo)致細(xì)胞形成特殊的形狀,從而改變其攜帶血紅蛋白的能力。
鐮狀細(xì)胞貧血是20世紀(jì)初才被人們發(fā)現(xiàn)的一種遺傳病。1910年,一個黑人青年到醫(yī)院看病,他的癥狀是發(fā)燒和肌肉疼痛,經(jīng)過檢查發(fā)現(xiàn),他患的是當(dāng)時人們尚未認(rèn)識的一種特殊的貧血癥,他的紅細(xì)胞不是正常的圓餅狀,而是彎曲的鐮刀狀。后來,人們就把這種病稱為鐮刀型細(xì)胞貧血癥。鐮刀型細(xì)胞貧血癥主要發(fā)生在黑色人種中,在非洲黑人中的發(fā)病率最高,在意大利、希臘等地中海沿岸國家和印度等地,發(fā)病人數(shù)也不少。
This image shows two red blood cells. A normal red blood cell is shown as a background to a red blood cell affected by sickle-cell anaemia. Sickle-cell anaemia is a blood disease that causes the cell to form this characteristic shape, which affects its ability to carry haemoglobin. It is a genetic disorder caused when a person has two copies of a certain gene. It is common in countries where malaria is prevalent, as carrying one copy of the sickle-cell gene provides resistance to malaria. (Image: Jackie Lewin/EM Unit/UCL Medical School) [NewScientist]
(來源:NewScientist/MSN資訊 英語點津姍姍編輯)
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