Vaccenic acid

Last updated
Vaccenic acid
Skeletal formula Trans-vaccenic acid.svg
Skeletal formula
Ball-and-stick model Vaccenic-acid-3D-balls.png
Ball-and-stick model
Names
Preferred IUPAC name
(11E)-Octadec-11-enoic acid
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.010.691 OOjs UI icon edit-ltr-progressive.svg
PubChem CID
UNII
  • InChI=1S/C18H34O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h7-8H,2-6,9-17H2,1H3,(H,19,20)/b8-7+ Yes check.svgY
    Key: UWHZIFQPPBDJPM-BQYQJAHWSA-N Yes check.svgY
  • InChI=1/C18H34O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h7-8H,2-6,9-17H2,1H3,(H,19,20)/b8-7+
    Key: UWHZIFQPPBDJPM-BQYQJAHWBK
  • CCCCCC/C=C/CCCCCCCCCC(O)=O
Properties
C18H34O2
Molar mass 282.461 g/mol
Melting point 44 °C (111 °F)
Boiling point 172 °C (342 °F)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Yes check.svgY  verify  (what is  Yes check.svgYX mark.svgN ?)

Vaccenic acid is a naturally occurring trans fatty acid and an omega-7 fatty acid. It is the predominant kind of trans-fatty acid found in human milk, in the fat of ruminants, and in dairy products such as milk, butter, and yogurt. [1] [2] Trans fat in human milk may depend on trans fat content in food. [3] [4] Vaccenic acid was discovered in 1928 in animal fats and butter. Mammals convert it into rumenic acid, a conjugated linoleic acid, [5] [6] where it shows anticarcinogenic properties. [7] Cows milk had highest trans-vaccenic acid content in the first few days of the cows being milked, [8] indicating that it is stockpiled similarly to omega-3 fatty acids.

Its IUPAC name is (11E)-11-octadecenoic acid, and its lipid shorthand name is 18:1 trans-11. The name was derived from the Latin vacca (cow). [4] Its stereoisomer, cis-vaccenic acid, is found in Sea Buckthorn (Hippophae rhamnoides) oil. [9] Its IUPAC name is (11Z)-11-octadecenoic acid, and its lipid shorthand name is 18:1 cis-11.

Health effects

Obese rats fed a diet enriched with vaccenic acid for 16 weeks had a reduction in total cholesterol, LDL cholesterol and lower triglyceride levels, [10] with an effect comparable to CLA. This effect was not seen in lean rats. [11]

Vaccenic acid accumulates in the orbitofrontal cortex to a higher extent in patients with bipolar disorder and schizophrenia. [12] [13]

Oxidation of omega-7 unsaturated fatty acids on the skin surface, such as palmitoleic acid and vaccenic acid, may be the cause of the phenomenon commonly known as old person smell. [14]

Alkaline phosphatase was inhibited 25% by vaccenic acid in osteoblasts. [15]

A 2023 University of Chicago study found that trans-vaccenic acid enhances anti-tumor immunity by activating CD8+ T cells. This effect is accomplished by deactivating a GPR43 receptor, which activates the CREB pathway instead. The effect was produced with a diet containing 1% w/w TVA. [16]

Related Research Articles

<span class="mw-page-title-main">Fatty acid</span> Carboxylic acid

In chemistry, particularly in biochemistry, a fatty acid is a carboxylic acid with an aliphatic chain, which is either saturated or unsaturated. Most naturally occurring fatty acids have an unbranched chain of an even number of carbon atoms, from 4 to 28. Fatty acids are a major component of the lipids in some species such as microalgae but in some other organisms are not found in their standalone form, but instead exist as three main classes of esters: triglycerides, phospholipids, and cholesteryl esters. In any of these forms, fatty acids are both important dietary sources of fuel for animals and important structural components for cells.

<span class="mw-page-title-main">Fat</span> Esters of fatty acid or triglycerides

In nutrition, biology, and chemistry, fat usually means any ester of fatty acids, or a mixture of such compounds, most commonly those that occur in living beings or in food.

<span class="mw-page-title-main">Triglyceride</span> Any ester of glycerol having all three hydroxyl groups esterified with fatty acids

A triglyceride is an ester derived from glycerol and three fatty acids. Triglycerides are the main constituents of body fat in humans and other vertebrates as well as vegetable fat. They are also present in the blood to enable the bidirectional transference of adipose fat and blood glucose from the liver and are a major component of human skin oils.

Essential fatty acids, or EFAs, are fatty acids that are required by humans and other animals for normal physiological function that cannot be synthesized in the body.⁠ As they are not synthesized in the body, the essential fatty acids – alpha-linolenic acid (ALA) and linoleic acid – must be obtained from food or from a dietary supplement. Essential fatty acids are needed for various cellular metabolic processes and for the maintenance and function of tissues and organs. These fatty acids also are precursors to vitamins, cofactors, and derivatives, including prostaglandins, leukotrienes, thromboxanes, lipoxins, and others.

α-Linolenic acid Chemical compound

α-Linolenic acid, also known as alpha-linolenic acid (ALA), is an n−3, or omega-3, essential fatty acid. ALA is found in many seeds and oils, including flaxseed, walnuts, chia, hemp, and many common vegetable oils.

Linoleic acid (LA) is an organic compound with the formula HOOC(CH2)7CH=CHCH2CH=CH(CH2)4CH3. Both alkene groups are cis. It is a fatty acid sometimes denoted 18:2 (n−6) or 18:2 cis-9,12. A linoleate is a salt or ester of this acid.

<span class="mw-page-title-main">Conjugated linoleic acid</span> Group of compounds found in meat and dairy from ruminants

Conjugated linoleic acids (CLA) are a family of isomers of linoleic acid. In principle, 28 isomers are possible. CLA is found mostly in the meat and dairy products derived from ruminants. The two C=C double bonds are conjugated. CLAs are simultaneously both cis-fats and trans-fats, as one of the two C=C bonds is cis and the other trans.

Butterfat or milkfat is the fatty portion of milk. Milk and cream are often sold according to the amount of butterfat they contain.

<span class="mw-page-title-main">Rumenic acid</span> Chemical compound

Rumenic acid, also known as bovinic acid, is a conjugated linoleic acid (CLA) found in the fat of ruminants and in dairy products. It is an omega-7 trans fatty acid. Its lipid shorthand name is cis-9, trans-11 18:2 acid. The name was proposed by Kramer et al. in 1998. It can be considered as the principal dietary form, accounting for as much as 85-90% of the total CLA content in dairy products.

α-Eleostearic acid Chemical compound

α-Eleostearic acid or (9Z,11E,13E)-octadeca-9,11,13-trienoic acid, is an organic compound, a conjugated fatty acid and one of the isomers of octadecatrienoic acid. It is often called simply eleostearic acid although there is also a β-eleostearic acid. Its high degree of unsaturation gives tung oil its properties as a drying oil.

<span class="mw-page-title-main">Conjugated fatty acid</span>

Conjugated fatty acids is jargon for polyunsaturated fatty acids containing at least one pair of conjugated double bonds. An example of a conjugated fatty acid is the rumenic acid, found in the meat and milk of ruminants. Most unsaturated fatty acids that are doubly unsaturated do not feature conjugation, e.g., linoleic acid and linoelaidic acid.

<span class="mw-page-title-main">Punicic acid</span> Chemical compound

Punicic acid is a polyunsaturated fatty acid, 18:3 cis-9, trans-11, cis-13. It is named for the pomegranate,, and is obtained from pomegranate seed oil. It has also been found in the seed oils of snake gourd.

Linolelaidic acid is an omega-6 trans fatty acid (TFA) and is a cis–trans isomer of linoleic acid. It is found in partially hydrogenated vegetable oils. It is a white viscous liquid.

<span class="mw-page-title-main">Sheep milk</span> Dairy product

Sheep milk is the milk of domestic sheep. It is commonly used to make cultured dairy products, such as cheese. Some of the most popular sheep cheeses include feta (Greece), Pecorino romano (Italy), Roquefort (France) and Manchego (Spain).

<span class="mw-page-title-main">Mead acid</span> Chemical compound

Mead acid is an omega-9 fatty acid, first characterized by James F. Mead. As with some other omega-9 polyunsaturated fatty acids, animals can make Mead acid de novo. Its elevated presence in the blood is an indication of essential fatty acid deficiency. Mead acid is found in large quantities in cartilage.

α-Parinaric acid Chemical compound

α-Parinaric acid is a conjugated polyunsaturated fatty acid. Discovered by Tsujimoto and Koyanagi in 1933, it contains 18 carbon atoms and 4 conjugated double bonds. The repeating single bond-double bond structure of α-parinaric acid distinguishes it structurally and chemically from the usual "methylene-interrupted" arrangement of polyunsaturated fatty acids that have double-bonds and single bonds separated by a methylene unit (−CH2−). Because of the fluorescent properties conferred by the alternating double bonds, α-parinaric acid is commonly used as a molecular probe in the study of biomembranes.

Omega−7 fatty acids are a class of unsaturated fatty acids in which the site of unsaturation is seven carbon atoms from the end of the carbon chain.

<span class="mw-page-title-main">Coronaric acid</span> Chemical compound

Coronaric acid (leukotoxin or leukotoxin A) is a mono-unsaturated, epoxide derivative of the di-unsaturated fatty acid, linoleic acid (i.e. 9(Z),12(Z) octadecadienoic acid). It is a mixture of the two optically active isomers of 12(Z) 9,10-epoxy-octadecenoic acid. This mixture is also termed 9,10-epoxy-12Z-octadecenoic acid or 9(10)-EpOME (for Epoxy-Octadeca-MonoEnoic acid) and when formed by or studied in mammalians, leukotoxin.

<span class="mw-page-title-main">Trans fat</span> Type of unsaturated fat

Trans fat is a type of unsaturated fat that occurs in foods. Small amounts of trans fats occur naturally, but large amounts are found in some processed foods made with partially hydrogenated oils. Because consumption of trans fats is associated with increased risk for cardiovascular diseases, artificial trans fats are highly regulated or banned in many countries. However, they are still widely consumed in developing nations where they are associated with increased risk of diabetes, cardiovascular diseases, and death.

Lactobacillic aci, scientifically 10-(2-hexylcyclopropyl)­ decanoic acid, is a naturally occurring chemical compound from the group of fatty acids. Its salts are called lactobacillates. A special feature is the cyclopropane ring in the carbon chain. Lactobacillic acid, with 19 carbon atoms, is a fatty acid with an odd number of carbon atoms.

References

  1. ↑ Bowerman, Susan (May 19, 2008). "Now there are good trans fats?". Los Angeles Times.
  2. ↑ Precht D, Molkentin J (August 1999). "C18:1, C18:2 and C18:3 trans and cis fatty acid isomers including conjugated cis delta 9, trans delta 11 linoleic acid (CLA) as well as total fat composition of German human milk lipids". Nahrung. 43 (4): 233–44. doi:10.1002/(SICI)1521-3803(19990801)43:4<233::AID-FOOD233>3.0.CO;2-B. PMID   10481820.
  3. ↑ Friesen R, Innis SM (October 2006). "Trans fatty acids in human milk in Canada declined with the introduction of trans fat food labeling". J. Nutr. 136 (10): 2558–61. doi: 10.1093/jn/136.10.2558 . PMID   16988126.
  4. 1 2 Destaillats F, Buyukpamukcu E, Golay PA, Dionisi F, Giuffrida F (2005). "Letter to the Editor: Vaccenic and Rumenic Acids, A Distinct Feature of Ruminant Fats". Journal of Dairy Science . 88 (449): 449. doi: 10.3168/jds.S0022-0302(05)72705-3 . PMID   15653508.
  5. ↑ Bauman, Dale. "cis-9, trans-11 CLA - A Potent Anticarcinogen Found in Milk Fat". Archived from the original on 2006-09-07. Retrieved 2007-01-15.
  6. ↑ Banni S, Angioni E, Murru E, Carta G, Melis M, Bauman D, Dong Y, Ip C (2001). "Vaccenic acid feeding increases tissue levels of conjugated linoleic acid and suppresses development of premalignant lesions in rat mammary gland". Nutr Cancer. 41 (1–2): 91–7. doi:10.1080/01635581.2001.9680617. PMID   12094634. S2CID   2920114.
  7. ↑ Lock AL, Corl BA, Barbano DM, Bauman DE, Ip C (October 1, 2004). "The anticarcinogenic effect of trans-11 18:1 is dependent on its conversion to cis-9, trans-11 CLA by delta9-desaturase in rats". J Nutr. 134 (10): 2698–704. doi: 10.1093/jn/134.10.2698 . PMID   15465769 . Retrieved 2007-01-15.
  8. ↑ Bainbridge, Melissa L.; Cersosimo, Laura M.; Wright, André-Denis G.; Kraft, Jana (2016-03-01). Brockmann, Gudrun A. (ed.). "Content and Composition of Branched-Chain Fatty Acids in Bovine Milk Are Affected by Lactation Stage and Breed of Dairy Cow". PLOS ONE. 11 (3): e0150386. Bibcode:2016PLoSO..1150386B. doi: 10.1371/journal.pone.0150386 . ISSN   1932-6203. PMC   4773160 . PMID   26930646.
  9. ↑ Federal Research Centre for Nutrition and Food - Institute for Lipid Research. "Seed Oil Fatty Acids Database".
  10. ↑ AFNS. Alberta natural trans fat research earns global recognition Archived 2008-06-15 at the Wayback Machine . April 2, 2008.
  11. ↑ Wang, Ye; Jacome-Sosa, M. Miriam; Vine, Donna F.; Proctor, Spencer D. (May 2010). "Beneficial effects of vaccenic acid on postprandial lipid metabolism and dyslipidemia: Impact of natural trans -fats to improve CVD risk". Lipid Technology. 22 (5): 103–106. doi:10.1002/lite.201000016. ISSN   0956-666X.
  12. ↑ McNamara, RK; Jandacek, R; Rider, T; Tso, P; Hahn, CG; Richtand, NM; Stanford, KE (2007). "Abnormalities in the fatty acid composition of the postmortem orbitofrontal cortex of schizophrenic patients: gender differences and partial normalization with antipsychotic medications". Schizophr Res. 91 (1–3): 37–50. doi:10.1016/j.schres.2006.11.027. PMC   1853256 . PMID   17236749.
  13. ↑ McNamara, RK; Jandacek, R; Rider, T; Tso, P; Stanford, KE; Hahn, CG; Richtand, NM (2008). "Deficits in docosahexaenoic acid and associated elevations in the metabolism of arachidonic acid and saturated fatty acids in the postmortem orbitofrontal cortex of patients with bipolar disorder". Psychiatry Research. 160 (3): 285–299. doi:10.1016/j.psychres.2007.08.021. PMC   2620106 . PMID   18715653.
  14. ↑ Haze S, Gozu Y, Nakamura S, Kohno Y, Sawano K, Ohta H, Yamazaki K (April 2001). "2-Nonenal newly found in human body odor tends to increase with aging". J. Invest. Dermatol. 116 (4): 520–4. doi: 10.1046/j.0022-202x.2001.01287.x . PMID   11286617.
  15. ↑ Hamazaki K, Suzuki N, Kitamura K, Hattori A, Nagasawa T, Itomura M, Hamazaki T (June 2016). "Is vaccenic acid (18:1t n-7) associated with an increased incidence of hip fracture? An explanation for the calcium paradox". Prostaglandins Leukot. Essent. Fatty Acids. 109: 8–12. doi:10.1016/j.plefa.2016.04.001. PMID   27269708.
  16. ↑ Fan H, Xia S, Xiang J, et al. (22 November 2023). "Trans-vaccenic acid reprograms CD8+ T cells and anti-tumour immunity". Nature. 623 (7989): 1034–1043. doi: 10.1038/s41586-023-06749-3 . PMC   10686835 . PMID   37993715.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.