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springbird
2007-02-12 22:41:42
中国北京
chene_e@hotmail.com
主题:[转载]好消息:维生素与潜水病
内容:
资料来源:《三联生活周刊》2007年第7期(2007.2.12)P22.

  潜水正在变成一种流行的娱乐项目。尽管总体上非常安全,但在少数情况下,由于上升(原文为“上潜”)速度过快导致的减压病仍会带来生命威胁。斯普林特大学医学院的一个研究小组日前更发现,潜入30米深的水下30分钟后,心肺功能会发生轻微的变化,内皮细胞的功能也会减弱。不过,研究人员发现,只需在潜水前口服维生素C和维生素E,就可以有效地缓解潜水导致的心肺功能和内皮细胞功能异常,同时预防潜水病的出现。
springbird
2007-02-12 23:31:49
中国北京
chene_e@hotmail.com
跟贴:查了一下英文的相关网页,有这样的消息,与上面的说法类似,呵呵,看来真是个好消息:

http://www.lef.org/whatshot/index.html#aire

February 2, 2007

Antioxidants improve reduce endothelial dysfunction in divers

The February 1, 2007 issue of The Journal of Physiology published the discovery of researchers at the University of Split School of Medicine in Croatia and the Norwegian University of Science and Technology that consuming vitamins C and E before a scuba dive reduces some of the alterations in vascular endothelial function that can occur with this activity. It was recently determined that cardiovascular changes occur after each dive, although most of the changes have not been considered serious.

In one experiment, a group of seven men performed an initial scuba dive preceded and followed by ultrasound examination of endothelial and heart functions. For the second dive, the men were given 2 grams of vitamin C and 400 international units vitamin E two hours in advance. The depth and time of the dives were similar to those performed by recreational divers. In a second, randomized experiment, divers were given the vitamins or a placebo before two successive dives, and were evaluated one half hour, 24 hours, 48 hours and 72 hours later.

A single dive was associated with mild cardiac function changes and significantly decreased endothelial function. In both experiments, arterial endothelial dysfunction was reduced with antioxidant treatment, although heart and pulmonary artery function were not affected. Cardiovascular changes after diving lingered for up to three days, suggesting longer lasting adverse effects than had previously been determined.

In previous research, the team had discovered that a four week course of vitamins C and E protected against post-dive changes in endothelial function. They remark that the current experiments found this benefit with only a single oral dose. “Our data support the hypothesis that oxidative mechanisms play a major role in the changes observed after a single air dive,” they write.


—D Dye

参考译文(自己翻译的,错误之处,还望大家不吝指出...)

抗氧化剂能改善潜水员的内皮功能减弱

2007年2月2日

  在2007年2月1日的生理学杂志上,克罗地亚的斯普林特大学医学院和挪威科技大学的研究人员发现,在潜水前服用维生素C和E能减弱由潜水引起的部分血管内皮功能的变化。近日他们发现,每次潜水后,心血管都会产生一些变化,虽然大部分的变化并没有被认真考虑过。

  在一个实验中,对一个由7位潜水员组成的小组完成第一次潜水前后,进行了内皮和心脏功能的超音波检查。在第二次潜水前的2个小时,给潜水员服用了2克的维生素C和400国际单位的维生素E。潜水的深度和时间都与休闲潜水相似。在第二次随机试验中,在两次连续潜水之前,给不同潜水员分别服用了维生素或安慰剂,并在1个半小时,24小时,48小时和72小时之后分别作了测试。

  单次的潜水便有轻度心脏功能变化和值得注意的血管内皮功能减弱。在两次试验中,抗氧化剂的使用减轻了血管内皮功能减弱,尽管心肺血管功能没有受到影响。心血管的变化一直持续到潜水后的三天,较之以前的发现,潜水能产生更久的不良影响。

  在以前的研究中,该小组还发现,在服用4周的维生素C和维生素E之后,保护了内皮功能在后面潜水中产生变化。 他们谈到在目前的实验中发现,仅口服维生素就有用。“我们的数据支持了这样的假设:氧化机制在单次空气潜水后所观察到的改变中,发挥了重大的作用。”他们写到。

—D Dye
springbird
2007-02-12 23:50:44
中国北京
chene_e@hotmail.com
跟贴:英文好的朋友们,可以直接去刊登那个研究内容的杂志网站看更多相关内容啊。。。

要不然,就记住潜水前口服维生素C和E就好了!


地址是:http://jp.physoc.org/cgi/content/full/578/3/859

======================
The Journal of Physiology
J Physiol 578.3 pp 859-870
DOI: 10.1113/jphysiol.2006.122218
© The Physiological Society 2007

The effects of acute oral antioxidants on diving-induced alterations in human cardiovascular function

急性口服抗氧化剂在潜水导致的人体心血管功能变化中的作用

Ante Obad1, Ivan Palada1, Zoran Valic1, Vladimir Ivanev1, Darija Bakovi1, Ulrik Wisløff2, Alf O. Brubakk2 and eljko Duji1
1 Department of Physiology, University of Split School of Medicine, Split, Croatia
2 Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
tan
2007-03-01 01:56:04
tan@bjdivers.org
跟贴:我们这次的菲律宾潜水之旅已经在尝试着使用,不过没有研究机构给我们作测试,我们还不知道对我们的肌体有何影响呀?
richard
2007-03-01 18:41:42
蓝色星球
richard61@sina.com
跟贴:tan教:

有研究报告显示:安徽产的脐橙中含有大量的维生素C和E。
这次去潜水之前没少吃吧?

^_*
tan
2007-03-01 22:47:36
tan@bjdivers.org
跟贴:哈哈哈哈,真有你的,看样子90橙对你的帮助很大呀,照这样年末的集采他们要开火车送了。

还不给大家唠唠你的所获,莫非是等辣椒水和老虎凳?
tan
2007-03-01 22:52:36
tan@bjdivers.org
跟贴:对了,我们这次在垃圾场见到了一个我从没见过的生物,录下来了,球球爹做完的片子,对机子要求太高,暂时还看不了,只能去他那里看了。
青海的河峰
2007-03-03 12:22:57
beijing
跟贴:对维生素的量有限制吧??好像VE不能吃太多哦!
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