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第十七章 肾功能不全. ( renal insufficiency). 肾的功能解剖结构示意图. Peritubular capillary. Renal tubule. H 2 O. H 2 O. H 2 O. Renal corpuscle. 肾小球滤过 Glomerular filtration. Flow of filtrate. 肾小管重吸收 Tubular reabsorption. 肾小管分泌 Tubular secretion. Urine. - PowerPoint PPT Presentation
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(renal insufficiency)
Urine Glomerular filtration Tubular reabsorption Tubular secretionFlow of filtrateRenal corpuscle
The fundamental unit for renal filtration and resorption
:: (renin)(EPO)PGs VitD
PGs EPO 125-(OH ) 2VD3
1234
Excretion filtration, resorption and secretion, to maintain the balance in water, electrolytes, acid and alkali Endocrine renin, prostaglandins, erythropoietin, 1,25 (OH)2VitD3 Inactivation PTH, pepsinReview of normal renal function
Inferior vena cavaAdrenal glandKidneyAortaUreter Bladder Urethra
Net Filtration Pressure60 out(25 mmHg)=-(-)60 mmHg10 mmHg25 mmHg
GFR
123
1--renin-angiotensia-aldosterone systemRAAS)2erythropoietenEPO3125-D3125-dihydroxyvitamin D,1,25-OH2VD34--kallikrein-kinin-prostaglandin-systemKKPGS5
hyperthrophy of remaining nephrons Normal glomeruli, LM 390xGlomerulus from patient with unilat. kidney agenesis, LM 390x
(acute renal failureARF)
GFR
1(ATN) 1 2 3 2 GFR
GFRADH
1(ATN) 1 2 3 2 GFR
HgCL2 200
HgCL2 200
1 1 2 3 42
RBFGFR 80~160mmHgRBFGFR50~70mmHgRBFGFR1/2~2/340mmHgRBFGFR80mmHg
RPFGFR80180405.3
1- 2RAS34GFR
()1234DIC
12 12GFR GFR
RAA - PGE2 ; Ca2+ GFR
:,:, GFR AngADHGFR ,,,
Normal Cell Apoptotic cell Cell undergoing apoptosis
(1) (2)mTAL(S3) (3)mTAL (4) () NO (HO)(CO) /HO ARF
1ATPNa+-K+-ATP 2OFR Na+-K+-ATPCa2+-ATPATP
3GSH4GSH GSH AAPGSLTS 56
Na+K+-ATP Ca2+ - ATP Ca2+ATP OFR GSH PGsLTs
(1) (2) (3) (4) ATP N450
200 CHSP70
400ml/d100ml/d 1.010~1.020 > 40mmol/L
KfGFRATN
water intoxication
GFR
BUN3.57 ~ 5.25mmol/L 10~15mgBUN azotemia
GER
chronic renal insufficiencyCRI
GFR
%
() 1 2trade-off PTH
GFR PTHD3GFR
() 1 2 (1)-(2) (3) (4) GFR
1 1nocturia
2polyuria242000ml 3 400ml
100210351020
10081012266~300mmolL360~1450mmol/L
1proteinuria
2
lBUN GFR2 = 3 GFR(NPN>40mg/dl GFR
GFR PTH D
GFR PTHD3GFR
1GFR2PTHCAH+HCO3-3NH3 H+
1 2
3 PGA2E2
PGA2PGE2GFR
l 2D3 3
ADP 1 2
12 345 RBCRBCATPRBCRBCRBCRBCMPS
1.PTH: 2.: 3.4. 5.500~50006.
PTH
+ + + -+
PTH
kussmaul
1 ARF2345678910ARF11 ARF12
,68++1.01564 mmol/L809 ummol/L16.2 mmol/LClinical Example
2. Questions3.
35201 6104-52000ml/BP19.3/13.3kPaHb40-70g/LRBC1.3-1.761012/L+RBCWBC0-2/HP33000ml/1.01010 T37R20P120BP20/13kPaRBC1.49 1012/LHb47g/LWBC9.6 109/L1.9mmol/L1.3mmol/L+RBC10-15/HpWBC0-2/Hp0-2/Hp2-3/LPX
1922 965 363