Unique cytochromes P450 in human brain: implication in disease pathogenesis.
Unique cytochromes P450 in human brain: implication in disease pathogenesis.
复制标题
人脑中独特的细胞色素 P450:对疾病发病机制的影响。
DOI:
10.1007/978-3-211-45295-0_26
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发表时间:
2006
期刊:
影响因子:
--
通讯作者:
Pai,HV
中科院分区:
文献类型:
--
作者:
Ravindranath,V;Kommaddi,RP;Pai,HV
Cytochromes P450 is a family of heme proteins that metabolize xenobiotics including drugs. Unique human brain cytochrome P450 enzymes metabolize xenobiotics including drugs to active/inactive metabolites through biotransformation pathways that are different from the well-characterized ones in liver. We have identified an alternate spliced functional transcript of CYP2D7 containing partial inclusion of intron 6 in human brain but not in liver or kidney from the same individual. Genotyping revealed the presence of the frame-shift mutation 138delT only in those subjects who expressed the brain variant CYP2D7, which metabolizes codeine exclusively to morphine unlike hepatic CYP2D6 that metabolizes codeine to nor codeine and morphine. CYP1A1 bioactivates polycyclic aromatic hydrocarbons to reactive DNA binding metabolites and initiates carcinogenesis. We have identified a unique splice variant of CYP1A1 having deletion of 87 bp of exon 6 which is present in human brain but not in liver of the same individual. We present evidence for the existence of biotransformation pathways in human brain that are dissimilar from known pathways in liver. Identification and characterization of novel CNS-specific P450 enzymes generated by alternate splicing of known genes or as yet unidentified genes may help predict consequences of exposure to xenobiotics including pesticides in the brain.
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DOI:
10.3109/10409238009105470
发表时间:
1980
期刊:
--
影响因子:
--
作者:
John A. Smith;L. G. Pease;K. Kopple
通讯作者:
John A. Smith;L. G. Pease;K. Kopple
影响因子:
3.5
作者:
HALLENGA, K;VANBINST, G;DIRKX, J
通讯作者:
DIRKX, J
DOI:
10.1073/pnas.75.6.2636
发表时间:
1978-01-01
影响因子:
11.1
作者:
VEBER, DF;HOLLY, FW;HIRSCHMANN, R
通讯作者:
HIRSCHMANN, R
影响因子:
4.8
作者:
D. Johnson;J. Ensinck;D. Koerker;J. Palmer;C. J. Goodner
通讯作者:
C. J. Goodner
DOI:
10.1111/j.1399-3011.1985.tb02217.x
发表时间:
2009
期刊:
International journal of peptide and protein research
影响因子:
--
作者:
C. Wynants;G. Van Binst;H. Loosli
通讯作者:
H. Loosli