BIOLOGY OF ENDOTHELIN
BIOLOGY OF ENDOTHELIN
批准号:
2444035
负责人:
VALENTINA KON
金额:
$26.84万
依托单位:
依托单位国家:
美国
项目类别:
财政年份:
1990
资助国家:
美国
项目状态:
已结题
起止时间:
1990-07-01 至 1999-06-30
关键词:
adrenergic receptor cyclosporines endothelin kidney circulation laboratory rat ligands nitric oxide northern blottings peptides polymerase chain reaction prostacyclins protein purification receptor binding receptor expression renal failure renal glomerulus scanning electron microscopy vascular endothelium vasomotion
中文摘要
该项目旨在研究内皮素(Et)的生物学作用
系统,包括Et肽及其受体。 具体地说,
该项目将检验每个Et受体
亚型,EtA和EtB,由Et配体独特地调节,
调节不同于通常的配体-受体相互作用。
因此,Et对EtA亚型的影响很小。 相比之下,
上调EtB亚型。 每种受体亚型依次调节
Et肽本身的产生,使得EtA发挥负作用。
反馈减少Et产生,而正反馈增加Et产生
Et产生通过EtB受体亚型发生。 EtB受体
亚型还可以通过一氧化氮(NO)抑制Et产生,
前列环素(PGI 2)。 Et激活的功能性后果将
然后由每个人的独特功能的贡献决定
受体 系统,其中EtA介导血管收缩,EtB介导
血管收缩或血管舒张。 这些项目还将审查一个
肾上腺素能神经系统是这一系统的生理调节剂,
以及作为病理生理调节剂的环孢菌素。
英文摘要
The projects aim is to study the biological role of the endothelin (Et)
system which includes the Et peptide and its receptors. Specifically,
the project will examine the hypothesis that each of the Et receptor
subtypes, EtA and EtB, is uniquely modulated by the Et ligand and this
modulation is distinct from the usual ligand-receptor interactions.
Thus, Et has little effect on the EtA subtype. By contrast, Et
upregulates the EtB subtype. Each receptor subtype, in turn, modulates
production of the Et peptide itself, such that EtA exerts a negative
feedback to decrease Et production while a positive feedback to increase
Et production occurs through the EtB receptor subtype. The EtB receptor
subtype may also suppress Et production through nitric oxide (NO) and
prostacyclin (PGI2). The functional consequence of Et activation will
then be determined by the contribution of the distinct function of each
receptor system whereby EtA mediates vasoconstriction and EtB mediates
vasoconstriction or vasodilation. The projects will also examine a
physiologic modulator of this system, the adrenergic nervous system, as
well as a pathophysiologic modulator, cyclosporine.
期刊论文(0)
专著(0)
科研奖励(0)
会议论文
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财政年份:2000
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负责人:VALENTINA KON
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财政年份:1999
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批准号:2142138
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ROLE OF ENDOTHELIUM IN GLOMERULAR DYSFUNCTION
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批准号:3243196
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资助金额:$13.46万
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财政年份:1990
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-
依托单位:
ROLE OF ENDOTHELIUM IN GLOMERULAR DYSFUNCTION
-
批准号:3243201
-
项目类别:
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资助金额:$14.0万
-
财政年份:1990
-
负责人:VALENTINA KON
-
依托单位:
ROLE OF ENDOTHELIUM IN GLOMERULAR DYSFUNCTION
-
批准号:3243200
-
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资助金额:$13.46万
-
财政年份:1990
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负责人:VALENTINA KON
-
依托单位:
BIOLOGY OF ENDOTHELIN
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批准号:2734087
-
项目类别:
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资助金额:$27.87万
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负责人:VALENTINA KON
-
依托单位:
BIOLOGY OF ENDOTHELIN
-
批准号:2142139
-
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资助金额:$24.84万
-
财政年份:1990
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负责人:VALENTINA KON
-
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海外基金