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DƯỢC LÍ Goodman & Gilman's The Pharmacological Basis of Therapeutics 12th, 2010

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1212

CYP11A1

HO

H 3 C

H 3 C

H 3 C

11C

8

B

19

10

9

1

2

3 6

7

4

5

12

13

14

21

18

22

20 23

17

16

15

D

24

Cholesterol

27

25

26

CH 3

CH 3

CH 3

CH 3

SECTION V

HORMONES AND HORMONE ANTAGONISTS

C

H 3 C

H 3 C

HO

Pregnenolone

O

C

H 3 C

CYP17 H 3 C

HO

17α-Hydroxypregnenolone

CH 3

CH 3

3β-HSD

3β-HSD

C

H 3 C

O C

H 3 C

O

H 3 C

CYP17 H 3 C

OH

O

O

Progesterone

17α-Hydroxyprogesterone

CYP21 CH 2 OH

CYP21 CH 2 OH

H 3 C O

CYP17 H 3 C

HO

Dehydroepiandrosterone

CH 2 OH

C O

C O C O

H 3 C

H 3 C

H 3 C

OH

HO

H 3 C

H 3 C

CYP11B1

OH

H 3 C

O

OH

O O O

Deoxycorticosterone

11-Deoxycortisol

Cortisol

CYP11B2

HO

H 3 C

CH 2 OH CH 2 OH CH 2 OH

C O C O C O

H 3 C

H 2 COH

CHO

HO

HO

CYP11B2 H 3 C

CYP11B2 H 3 C

O

O

Corticosterone 18-Hydroxycorticosterone Aldosterone

Figure 42–3. Pathways of corticosteroid biosynthesis. The steroidogenic pathways used in the biosynthesis of the corticosteroids are

shown, along with the structures of the intermediates and products. The pathways unique to the zona glomerulosa are shown in orange

box, whereas those that occur in the inner zona fasciculata and zona reticularis are shown in gray box. The zona reticularis does not

express 3ß-HSD and thus preferentially synthesizes DHEA. CYP11A1, cholesterol side-chain cleavage enzyme; 3β-HSD, 3β-hydroxysteroid

dehydrogenase; CYP17, steroid 17α-hydroxylase; CYP21, steroid 21-hydroxylase; CYP11B2, aldosterone synthase;

CYP11B1, steroid 11β-hydroxylase.

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