b****5
发帖数: 504 | 1 请教：
A previously healthy 6-monthold boy is brought to the physician because of a
cough for 1 week, initially he had a low-grade fever, sneezing, congestion,
and runny nose, He then developed a dry intermittent cough, The parents now
note that with any startle the baby chokes and gasps, He has not had any
immunizations. Physical examination shows paroxysms of "machine gun" -like
coughing with a forced expiratory grunt at the end of coughing, Leukocyte
count is 30,0001mm3 (70% Iymphocytes). Neutrophil chemotaxis and oxidative
metabolism are defective due to increased activity of which of the following
enzymes?
A) Adenylyl cyclase B) Myeloperoxidase C) NADPH oxidase D) Phospholipase C E
) Protein kinase C
看题是小孩得了白日咳，有白细胞增高，淋巴细胞为主。问题却摸不到头脑，有谁选对
了这道题能讲讲吗？ | S******9
发帖数: 2837 | | b****5
发帖数: 504 | 3 多谢回复。不过为什么选A呢？Pertusis toxin inhibit Gi ？中性粒细胞的趋化为什么受影响？
【在 S******9 的大作中提到】
: A
| g********e
发帖数: 131 | | b****5
发帖数: 504 | 5 多谢哥们帮顶。收到其它小组的消息，等他们做完，我们可能就知道答案了。但愿在我
考之前知道答案啊，要不考完就知道我们做的答案是错的岂不上火死了！ |
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