WordNet

a component of a mixture that has been separated by a fractional process
the quotient of two rational numbers
a small part or item forming a piece of a whole
the process whereby fluids pass through a filter or a filtering medium
the act of changing a fluid by passing it through a filter

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『破片』,断片;(…の)一部,わずか《+『of』+『名』》 / 『分数』
ろ過,ろ過作用

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/02/15 17:13:59」(JST)

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Parameter	Value
renal blood flow	RBF=1000 ml/min
hematocrit	HCT=40%
renal plasma flow	RPF=600 ml/min
filtration fraction	FF=20%
glomerular filtration rate	GFR=120 ml/min
urine flow rate	V=1 mL/min

Sodium	Inulin	Creatinine	PAH
S_Na=150 mEq/L	S_In=1 mg/mL	S_Cr=0.01 mg/ml	S_PAH=
U_Na=710 mEq/L	U_In=150 mg/mL	U_Cr=1.25 mg/mL	U_PAH=
C_Na=5 mL/min	C_In=150 ml/min	C_Cr=125 mL/min	C_PAH=420 ml/min
			ER=90%
			ERPF=540 ml/min

In renal physiology, the filtration fraction is the ratio of the glomerular filtration rate (GFR) to the renal plasma flow (RPF).

Filtration Fraction, FF = GFR/RPF

The filtration fraction, therefore, represents the proportion of the fluid reaching the kidneys which passes into the renal tubules. It is normally about 20%.

The GFR on its own is the most common and important measure of renal function. However, in a condition such as renal artery stenosis, the blood flow to the kidneys is reduced. The filtration must therefore be increased in order to perform the normal tasks of the kidney in balancing fluid and electrolytes in the body. This would be reflected by a high filtration fraction, showing that the kidneys have to do more work with the fluid they are receiving. Diuretics such as loops and thiazides decrease the filtration fraction.

Catecholamines (Norepinephrine and Epinephrine) increase the filtration fraction by vasoconstriction of afferent and efferent arterioles, which is possibly activated by alpha 1 adrenergic receptors.

Severe haemorrhage will also result in an increased filtration fraction.

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1. Chapter 2C：GFRの決定要因 chapter 2c determinants of gfr
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English Journal

Antioxidant activities and functional properties of protein and peptide fractions isolated from salted herring brine.

Taheri A, Sabeena Farvin KH, Jacobsen C, Baron CP.SourceDepartment of Seafood Sciences, Faculty of Marine Sciences, Chabahar Maritime University, P.O. Box 99717-65499, Chabahar, Iran.
Food chemistry.Food Chem.2014 Jan 1;142:318-26. doi: 10.1016/j.foodchem.2013.06.113. Epub 2013 Jul 4.
In the present study proteins isolated from herring brine, which is a by-product of marinated herring production were evaluated for their functional properties and antioxidant activity. Herring brine was collected from the local herring industry and proteins were precipitated by adjusting the pH to
PMID 24001848

Novel UMOD mutations in familial juvenile hyperuricemic nephropathy lead to abnormal uromodulin intracellular trafficking.

Liu M, Chen Y, Liang Y, Liu Y, Wang S, Hou P, Zhang H, Zhao M.SourceRenal Division, Department of Medicine, Peking University First Hospital, Institute of Nephrology, Peking University, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing 100034, China.
Gene.Gene.2013 Dec 1;531(2):363-9. doi: 10.1016/j.gene.2013.08.041. Epub 2013 Aug 27.
BACKGROUND: Familial juvenile hyperuricemic nephropathy (FJHN) is an autosomal dominant disorder characterized by hyperuricemia and progressive chronic kidney disease. Uromodulin gene (UMOD) mutations, leading to abnormalities of uromodulin intracellular trafficking contribute to the progress of the
PMID 23988501

Glucogalactan: a polysaccharide isolated from the cell-wall of Verticillium lecanii.

Corradi da Silva ML, Exposti DT, Vasconcelos AF, Alexandre SM, Silveira JL, Ducatti DR.SourceDepartamento de Física, Química e Biologia, Faculdade de Ciências e Tecnologia, Universidade Estadual Paulista, CEP 19060-900, Presidente Prudente, São Paulo, Brazil. Electronic address: corradi@fct.unesp.br.
Carbohydrate polymers.Carbohydr Polym.2013 Nov 6;98(2):1353-9. doi: 10.1016/j.carbpol.2013.07.075. Epub 2013 Aug 3.
A water-soluble polysaccharide was extracted with alkali from the cell wall of Verticillium lecanii (also called Lecanicillium lecanii). After freezing and thawing, the water-soluble fraction was purified by gel filtration chromatography on Sepharose CL-6B and eluted as one peak by HPSEC/RID. Monosa
PMID 24053813