methionine


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methionine

 [mĕ-thi´o-nēn]
a sulfur-containing amino acid, one of the essential amino acids, furnishing both methyl groups and sulfur necessary for metabolism.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

me·thi·o·nine (Met, M),

(me-thī'ō-nēn),
The l-isomer is a nutritionally essential amino acid and the most important natural source of "active methyl" groups in the body, hence usually involved in methylations in vivo; the dl-form is used as an adjunct in the treatment of liver diseases.
Farlex Partner Medical Dictionary © Farlex 2012

methionine

(mə-thī′ə-nēn′)
n.
A sulfur-containing essential amino acid, C5H11NO2S, obtained from various proteins or prepared synthetically and used as a dietary supplement and in pharmaceuticals.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

me·thi·o·nine

(me-thī'ō-nēn)
A nutritionally essential amino acid and the most important natural source of "active methyl" groups in the body, hence usually involved in methylations in vivo.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

methionine

An antidote used to treat paracetamol poisoning from overdose. A drug used in combination with paracetamol to protect the liver against the serious damage that is caused by deliberate overdosage. A brand name of the combination is Paradote.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
Methionineclick for a larger image
Fig. 221 Methionine . Molecular structure.

methionine (M, Met)

one of 20 AMINO ACIDS common in proteins. It has an ‘R’ group with a nonpolar structure and is relatively insoluble in water. See Fig. 221 . The ISOELECTRIC POINT of methionine is 5.7.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

me·thi·o·nine

(M) (me-thī'ō-nēn)
The l-isomer is a nutritionally essential amino acid and the most important natural source of "active methyl" groups in the body.
Medical Dictionary for the Dental Professions © Farlex 2012
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Similarly, combining methionine restriction with radiation therapy in the case of the soft tissue sarcoma reduced tumour growth.
Can diet help cancer treatment? Study in mice offers clues
After a 24-h interval, cells were treated with different concentrations (100 to 500 [micro]g/mL) of nanoemulsified AAs (methionine and cysteine).
The effect of nanoemulsified methionine and cysteine on the in vitro expression of casein in bovine mammary epithelial cells
Methionine is a sulfur containing, essential amino acid in human body.
Relationship of amino acid concentrations in blood with occurrence of dermatophytosis
During this period, the increasing dietary methionine + cysteine: lysine ratio resulted in a linear increase (P<0.01) of feed intake (FI=16.572+25.07X; [R.sup.2]=0.88; Table 2).
Digestible methionine + cysteine: lysine ratios for growing meat-type quails/Relacces de metionina + cisterna: lisina digestiveis para codornas de corte em crescimento
Conversion of Indigo Carmine to Isatin Sulfonate in the Presence of Singlet Oxygen and Methionine or Methionine Sulfoxide.
Evidence for the Formation of Ozone (or Ozone-Like Oxidants) by the Reaction of Singlet Oxygen with Amino Acids
In the experiments conducted to date, the methionine content of fox diets ranged from 4.0 to 10.0 g kg-1 feed DM (Lorek et al., 2002a; Dahlman et al., 2002a,b, 2003, 2004; Matusevicius et al., 2004, Gugolek et al., 2012).
EFFECT OF DIETS WITH HIGH METHIONINE LEVELS ON GROWTH PERFORMANCE, HEALTH STATUS, NUTRIENT DIGESTIBILITY AND NITROGEN RETENTION IN ARCTIC FOXES
Special additions of methionine and lysine as partial substitutes for protein in finisher diets.
Inclusion of Blend of L-lysine, DL-Methionine and Vitamins D3, E in Diets for Broiler; Effects on Growth Performance, Feed Intake and Conversion and Water Intake
(27) Alterations in hepatic methionine metabolism due to chronic alcohol consumption have been correlated with the pathogenesis of alcoholic liver disease.
S-adenosyl-L-methionine (SAM-e) in combination with B-vitamins and amino acids
It can be concluded that methionine and lysine supplementation had a positive effect on milk yield and milk composition (milk protein, solid not fat, total solids and lactose).
Effect of Supplementation of Rumen Protected Lysine and Methionine on Production Performance, Milk and Blood Parameters of Early Lactating Nili-Ravi Buffaloes
Homocysteine is a metabolic product of methionine metabolism.
Serum homocysteine levels in patients with retinal vein occlusion: a modifiable risk factor
Although most nutrients required by the immune system are present in the diet in sufficient concentrations, there is evidence that increased dietary supplementation of certain nutrients such as methionine above the optimal level for growth is of benefit to immune response and maximum performance/productivity [1].
Influence of hypo and hyper methionine supplementation on growth performance and immunological responses to Newcastle disease vaccinations of broiler chickens

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