Title: Biochemistry in Liver
1? ? ? ? ??????
Biochemistry in Liver
2? ?
- ????????????(heterogeneity)
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??????????????????????
?????????,??????????????
I ? (???? periportal zone) III ? (?????
centrolobular zone) II ? (??I??III???)
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4(No Transcript)
5? ? ???????????
Function of Liver in Material Metabolism
6- ???????????
- ??????????,???????,???????????????
??????????????
??? ????????? ?????
7?????????????????
- ????
- ??????
- ?????????,?VLDL????
- ????
- ??????
- ????
- ??????
- ??????????????????
8????????????
????????????????????????????
- ?????????????????
- ????????????????????????????????????????????
(VLDL?HDL?apo C?)??????? (LDL)
9?????????????
- ????
- ????,???????????????
- ??
- ???????????? ??? ???
- ??
- ????ß??? ??????????LDL ???
- ??
- ????? VLDL HDL apo C? LCAT
10?????????????
- ????????????
- ??????????(??????)
- ???????(?????)
- ??????????
- ???????????????????(???????)?
- ???????,?????
11?????????????
- ?????????
- ??????
- ?Vit A?E?K?B12???????
- ??????
- ??????????,Vit D???????
- ??????
- Vit D3 ? 25-(OH)-Vit D3
- ??????????????
12????????????
- ????? (inactivation of hormone)
- ?????????,??????????????????
????????
13? ? ? ????????
Biotransformation Function of Liver
14?????????
- ???????
- ??????????????????????? (biotransformation) ?
- ???????
?????
15????????? ??????,?????????????????????? ?
??????? ?????????????,???? (inactivate),???(detox
icate)??????????????????,???????
? ?????????????
16?????????????
- ? ?
- ???????????????
- ?????????
????????????????????
??????????????,???????,??????????????,
??????,??????
17(?)??????????????
- 1. ?????P450??????
- ?????????P450??????
- ????????(?????)
- ??Cyt P450,NADPHH,NADPH-???? P450???
- ???????
- RHO2NADPHH ? ROHNADPH2O
18????? ????????,??????????????,??????????,?????????
???
19? ?
20??
?????
21?????? ?????
? ?
222. ????????? ?????( monoamine oxidase, MAO)
233. ??????????
- ?????
- ????(alcohol dehydrogenase, ADH)?????????
- ????(aldehyde dehydrogenase, ALDH)????????
24- (?)????
- ?????? (nitroreductase)
- ?????? (azoreductase)
- ????????
(?)???? ??????
25(?)????
- ????????????????????????????????
- ?????????????????????????????????
261. ?????????????????
- ???????????
- ?????????? (UDPGA)
? ?
27- ???
- ????????? (UDP-glucuronyl transferases, UGT)
??
UDP
?ß?????
282. ??????
??? ????? (sulfate transferase )
??
PAP
?????
293. ?????
??? ????A ?????
??A
??? ????
S-????????
? ?
306. ?????
5. ???????
?????S - ??????(SAM)
????
N-??????
31?????????????
- ?????????????????????
- ??????
32? ? ? ?????????
Metabolism of Bile and Bile Acids
33????
?????? ????(????)??????
34????????
???(bile acids)??? ???????????????????,???????????
,?????,???? (bile salts)?
35?????
36?????
37????? ???????????????????,????????????????????
????? ????????????? 7a-???????????,???????????
38?????
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39?????
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40(?)??????
1. ???????? ?????????????? ??????
?????????????????????? ???????7a-???
41???(27C)
????????
7a-?????
?????(24C)
42-
HMGCoA???
????? ???? ????
???7a-???
-
432. ?????????????
?????????? ???
?????
?????
44- ???????
- (enterohepatic circulation)
- ?????????
???????????,?????????????,????????????,???????????
?? ?????95?
45? ?
46- ????????????
- ??????????????????????????
- ?????0.4-0.6g/d
- ???3-5g/d
- ?????6-12?????,?????????????12-32??
47(?)??????
1.?????????? ?????????????
2.??????????? ??????????????????? ? 10?1
48???
?????????
???
49? ? ? ?????????
Metabolism of Bile Pigment and Jaundice
50??????
- ???(bile pigment)??????????????????,??????????????
????
51???????????
???(bilirubin)?? ??????????????????????????????
??????
??80????????????????
52????
- ??
- ????????-???????????????
???
???
53????????
? ?
54- ???????????????,??????(????????????????????)??,??
??CO???????????? - CO?????????????,????????,cGMP????????????
- ?????????????,????????????????
- ????????????,????????-?????,??????????????????????
????
55??????????
? ?
56??????
- ??
- ?????????????,???????????????????
57???????????
?? ?????????????????????????
??
58??
- ???????
- ??????(???????UDP?????,UDPGA)
- ??????????
- ??????????????,???????????????????,????????
59 ??????????
60 ????????????
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61??
???????????????????,?????????
62?????????????????????
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?????
???
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????????,????,d -????
?? ?i -???,???, d -???
63???????????
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64????????
- ??????????
- ????????????????????,??????,?????????????,????????
??(bilinogen enterohepatic circulation)?
65??????????
? ?
66??????????
????????? 116?mol/l (0.1 1mg/dl) 4/5??????,???
?????
67 ????????
? ? ????? ?????
? ? ?????, ???? ?????, ????
???????? ??? ??
??????? ?????? ??????
????? ? ?
?????? ?? ?
???????????? ? ?
68??(jaundice)
- ??
- ??????
- ??
- ????
- ??(?????????)
- ????? (hemolytic jaundice)
- ??????(hepatocellular jaundice)
- ?????(obstructive jaundice)
69(?)??????
???????,??????????????????
70(No Transcript)
71??????????????????