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p450酶相关知识

作者:高考题库网
来源:https://www.bjmy2z.cn/gaokao
2021-02-09 22:57
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2021年2月9日发(作者:与日俱增)


promotion of empl


oyment, form a rea


sonable a


nd


orderly


pattern of i


ncome distri


buti


on,


bui


ld a more fair a


nd sustai


nable


social se


curity


systems, medi


cal and health system reform. T


he pl


enar


y, innovati


on of soci


al governance, must focus on the mainte


nance


of fundame


ntal interest


s of the


overwhelming majority of the


pe


ople, maximize fact


ors, e


nha


nce


social development, impr


oving soci


al governance, the i


nterests


of national se


curit


y, e


nsure t


hat the


people live a


nd w


ork, soci


al stabil


ity and


orde


r.


o improve social gover


nance, stimulati


ng social


organizati


on, i


nnovative and effective system of preventing


and resolvi


ng social


conflicts, impr


oving t


he publi


c se


curity system,


set up the


National Security Council


, national security systems and nati


onal


se


curity strategy to e


nsur


e national security.


Plenary


sessi


on, the


construction of ecologi


cal civ


ilization, you must esta


bli


sh systems


of ecol


ogical system, using the system to


protect t


he ecologi


cal e


nvironme


nt.


o improve natural


resour


ces asset property right system a


nd use control, red li


ne of delimitation of e


col


ogical


protecti


on, re


sources


paid


use system a


nd e


col


ogical


compensati


on sy


stem in ecologi


cal envir


onme


nt prote


ction management sy


stem reform. Plenary


sessi


on, ce


ntering on building a liste


ning party comma


nd, can wi


n and havi


ng a fine style of the pe


ople'


s army, a strong army under the


new sit


uation of the


party Goal


s, restricti


ng the


development of nati


ona


l defense and army buil


ding i


s solve


d outstanding


contra


dicti


ons a


nd


problems, i


nnovati


on a


nd


develo


pment of military the


ory, enhance milit


ary strategic guida


nce, improve t


he military strategy in the


new


period, building a modern m


ilitary force system with


Chi


nese


chara


cteristics.


o dee


pen t


he adjustment of


personnel system reform in the army, military


poli


cy and system reform, prom


ote the development of military and civi


lian integration de


pth.


Plenary session


stresse


d that com


pre


hensive reform must be to


strengthen a


nd impr


ove the


party's leader


shi


p, give full play to the core r


ole of the


party commands t


he overall sit


uation and coordi


nating all parties, impr


oving the


party's leadi


ng water ...


Margin.


Challe


nged t


he leadershi


p of the Communi


st Party of Chi


na, Marxi


sm- Leni


nism and Mao Ze


dong thought by


Deng


Xiao


-pi


ng's fla


g, replace


d by thre


e representatives and the


harmonic societ


y.


The former Communist Party spirit and


social cohesi


on


poi


nt of almost all politica


l makeover.


Chara


cteristics


of socialism publi


c ow


nership is


shifting to


private ow


nership,


planned reg


ulation and market regulati


on, t


he pr


oletari


an regime controlle


d by the elite. Of univ


ersal equality, fairness a


nd


basi


c principl


es of distri


buti


on sy


stem is socialist societ


y, however after economic monopolize


d by powerful, ve


sted interest


s grow


employers


do


not have t


he same status, har


dly se


ems fair socia


l distri


buti


on.


State key protection


of capital i


nterests rather tha


n the i


nterests of citizens, had


bee


n hits the bott


om of the prol


etariat


细胞色素


p450


酶的部分资料

< p>



P450


的检测意义



解释药效个体差异



解释毒性反应



用药个体化的理论基础



预测和防治治疗过程中出现的药物相互作用



P450


酶的体内分布



主要位于肝脏



也见于肠道、肾脏和脑内



P450


酶功能


催化内源物质


(


如甾类化合物


)< /p>


的代谢



催化外源物质

< br>(


如药物


)


的代谢



(结果对机体可能有益也可能有害)



P450


酶功能与药物的关系



P450


酶的功能涉及到体内药物的氧化代谢、生物活化和细胞毒性致 活



氧化代谢途径包括羟化、去甲基、去烷基和环氧化等



P450


酶的相关信息



药理作用





肝脏的细胞色素


P450

< p>
系统在药物的代谢中起着重要作用,它将药物由疏水型转


化为更易排泄的亲 水型。


生物转化反应一般可分为细胞色素


P450


依赖的


I


相和


II



结合反应。最近几年内已清楚药物的肝外代谢对体内药物总的降解起一 定的作用。胃


肠道内的生物转化是非常重要的,


因为它可降低口 服药物的生物利用度。


遗传多态性、


酶抑制、酶诱导及生理因素 均可引起细胞色素


P450


活性的改变。这有一定的临床含


意,因为这会引起药物药代动力学的改变,导致药物效能改变,因代谢减少或毒性代


谢物生成增多而增加药物毒性,以及导致药物的相互作用。




细胞色素


P450

< br>同工酶是血红蛋白超级家族,


它是内质网膜上混合功能氧化酶系统的末端氧


化酶。称呼这些为同工酶是由于其与一氧化碳结合和还原时,分光光度法测得的吸收峰在


450nm


附近。


P450

< br>同工酶认为已存在了


350


万年,在细菌、真菌及动植物 中均可发现其


存在。现在已清楚认为人类细胞色素酶参与外源性物质(如药物、酒精、抗 氧化剂、有机溶


剂、麻醉药、染料、环境污染物质、化学制品)的代谢,所产生的代谢产 物可能有毒性或致


癌性。


它们在氧化、


过氧化和还原内源性生理化合物,


如甾体、


胆汁酸、

< p>
脂肪酸、


前列腺素、


生物源性氨类和


retinoids


等代谢起重要作用。


最近除了研 究细胞色素同工酶参与代谢以外,


还揭示了其新的生理及病理作用。



细胞色素


P450

< p>
酶是肝脏内的一个重要酶系,


75%


的药物都由它 来进行代谢。


包括外源性和


内源性的药物代谢,既有

< p>
I


相代谢,及氧化,或脱氢等;也有


II


相代谢,如磺酸化等。。





bvi


ousl


y, face


Chi


na's Socialist sy


stem, the Communi


st Party is not the


party.


In that


case,


politi


cal chaos ha


s bee


n very tight. Is remodeling


or reconstr


ucti


on, i


s a correction or a


stove.


Whet


her to tur


n right


or left, is ba


ck to the source


or put


forward


new political i


deas.


This is to determine the r


oad pr


obl


ems in China, is al


so the key out


of the de


ep water


of the reform of the e


conomic sy


stem.


After 18, the new Ce


ntral coll


ective lea


dership attaches great importance to


politi


cal orie


ntation.


First, the


cles


ng point, starti


ng from the Ce


ntral


Governme


nt's self


-re


straint, whi


ch


prea


ches a


nd


pro-image, br


oug


ht fresh feeling to t


he communit


y.


Secondly,


before reform and openi


ng up and reform and openi


ng two


periods after non-negative,


untyi


ng the tangl


e of the soci


ety a long time on t


his issue. Third, a ne


w generation of part


y leaders on various


occasions to


Mao Ze


-Dong a


nd Ma


o Ze


-Dong's thoug


ht of evaluati


on has room for manoe


uvre,


throug


h to the r


uling i


deol


ogy of Ma


o Zedong thought, i


s the


call of the soul t


o the S


ocialist Revol


ution and constr


ucti


on. Empty talks jeopardize


national interest


s and try again, is a


n affirmation of De


ng Xia


o-ping's reform i


deas.


These strong politica


l signal


showing a


new ge


neration


of poli


tical leader


s is still kee


ping to t


he Socialist roa


d.


Four is revisiting t


he


o Ze-Dong's hi


storical


cycle


of


ofile anti


-corrupti


on a


nd t


he importa


nce


of the Constit


ution, reorga


nization is ba


d style of official


dom, wa


s to civ


ilize people obey the la


w


, w


hile impr


oving the col


or change of the regime of vigila


nce.


Five is to reform into dee


per waters a


nd stressed t


hat top


-level


design, this i


s a review on the reform and openi


ng up in t


he past, i


s also look


ing for a way o


ut.


Six foreign and Russia cl


oser, the flexibl


e attitude


on the issue of the


Korea


n pe


ninsula


, Sino


-Japane


se fishi


ng har


dli


ne China


on the island out of the


nt


ow pr


ofile sha


dow bega


n to gradua


lly pla


n


development. Signs show that t


he new l


eadership


began t


o make a left turn in politics.


However, as of right now, not only ide


ologi


cal confusi


on i


n the


community, the new lea


dership's t


hinki


ng is messy. Ne


w leader


s bot


h stresse


d the


need t


o implement t


he Constituti


on, stresse


d the need t


o turn off the


power i


n a cage. Al


so stre


sses that Mao Zedong t


hought ca


nnot be lost, 30 years after the reform and openi


ng up 30 years ago


can


not deny each ot


her.


Bot


h advocate dem


ocracy a


nd rele


ase


n does not speak


of


cal constraint


s. Neit


her de


ny the


history of the


CPC Central Committee on several issues ...


Comrades: today


brings t


ogether member


s, mainly in


order to


provi


de a platform to Exchange a


nd lear


n from each


other i


n order t


o facilitate our work. Just now, we focus


on taxation, pla


nni


ng and stabilit


y, safety,


proje


ct constr


uction, typi


cal topics


such as


private facts prese


ntation and interacti


on, and


towns currently exist in the in-de


pth a


nalysis


of the problems to


be solved, to ex


plore


new methods t


o solve t


he pr


oblem. It


can


be sai


d that summing


up t


he achievement,


no grandstanding


; analy


sis

-


-


-


-


-


-


-


-



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