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鲨鱼,海上霸王,关于它的许多传闻令人闻之色变。在鲨鱼诸多奇特之处中,有一个不太为人所知的特性,就是它的伤口愈合能力。《十万个为什么》一书中有这样一段描写:“有一条鲨鱼的肚子被剖开,肠子也出来了,人们以为它准活不成了!可是,把它放进海里,它照样游来游去找食吃。一个月后把它捞上来,咦!伤口全好了。”伤口愈合,仰赖白细胞的杀菌能力,而白细胞杀菌作用机制之一,是利用分子氧生成双氧水和超氧化物,以及由其分子衍生的其他还原氧达到杀菌目的。将氧源源不断输入伤口处,是白细胞杀菌的基本前提,但伤口组织通常是处于低氧状况,因而降低了病灶处白细胞的杀菌能力,而使伤口受感染而发炎脓肿。鲨鱼伤口迅速愈合的能力,显露了其超强的生命力,尤其是其体内强大的供氧能力,那么氧从何来呢?这里涉及到一个鲨鱼隐藏的秘密。
Sharks, Sea King, many of the rumors about it are amazing. Among the many peculiar sharks, one of the less known features is its wound healing ability. There is such a passage in “One Hundred and Thousand Why”: “The belly of a shark is cut open and the intestines come out, people think it can not survive! However, it put it into the sea, it still travels Get it eaten in a month, and catch it in a month! ”The wound is all right." Wound healing depends on the bactericidal ability of leukocytes, and one of the leukocyte bactericidal mechanisms is the use of molecular oxygen to generate hydrogen peroxide and superoxide and Other reducing oxygen derived from its molecules achieves the goal of sterilization. The continuous introduction of oxygen into the wound is the basic premise of leukocyte sterilization, but the wound tissue is usually in hypoxia, thus reducing the bactericidal ability of leukocytes in the lesion, leaving the wound infected with inflammatory abscess. The ability of sharks to heal quickly, revealing their super vitality, especially in the body’s strong oxygen supply, then oxygen come from? Here relates to the hidden secrets of a shark.