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{{redirect|DGLA|the algebra|Differential graded Lie algebra}} | |||
{{chembox | {{chembox | ||
| Watchedfields = changed | |||
| verifiedrevid = 291015519 | |||
| Name = Dihomo-γ-linolenic acid | | Name = Dihomo-γ-linolenic acid | ||
| ImageFile = DGLAnumbering.png | | ImageFile = DGLAnumbering.png | ||
| ImageSize = 250px | | ImageSize = 250px | ||
| ImageName = Dihomo-gamma linolenic acid | | ImageName = Dihomo-gamma linolenic acid | ||
| |
| PIN = (8''Z'',11''Z'',14''Z'')-Icosa-8,11,14-trienoic acid | ||
| OtherNames = ''cis'',''cis'',''cis''-8,11,14-Eicosatrienoic acid; DGLA; Diroleuton ({{abbrlink|INN|International Nonproprietary Name}}) | |||
| Section1 = {{Chembox Identifiers | | Section1 = {{Chembox Identifiers | ||
| |
| CASNo=1783-84-2 | ||
| PubChem=5280581 | | PubChem=5280581 | ||
| SMILES = |
| SMILES = CCCCC\C=C/C\C=C/C\C=C/CCCCCCC(=O)O | ||
| UNII_Ref = {{fdacite|correct|FDA}} | |||
| UNII = FC398RK06S| ChemSpiderID = 4444199 | |||
| InChI = 1/C20H34O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20(21)22/h6-7,9-10,12-13H,2-5,8,11,14-19H2,1H3,(H,21,22)/b7-6-,10-9-,13-12- | |||
| InChIKey = HOBAELRKJCKHQD-QNEBEIHSBE | |||
| StdInChI = 1S/C20H34O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20(21)22/h6-7,9-10,12-13H,2-5,8,11,14-19H2,1H3,(H,21,22)/b7-6-,10-9-,13-12- | |||
| StdInChIKey = HOBAELRKJCKHQD-QNEBEIHSSA-N | |||
}} | }} | ||
| Section2 = {{Chembox Properties | | Section2 = {{Chembox Properties | ||
| |
| C=20|H=34|O=2 | ||
⚫ | | MeltingPt = | ||
| MolarMass = 306.483 g/] | |||
⚫ | | MeltingPt = |
||
}} | }} | ||
}} | }} | ||
'''Dihomo-γ-linolenic acid''' ('''DGLA''') is a 20-carbon ] |
'''Dihomo-γ-linolenic acid''' ('''DGLA''') is a 20-carbon ] (also called, cis,cis,cis-8,11,14-eicosatrienoic acid). In physiological literature, it is given the name 20:3 (ω−6). DGLA is a ] with a 20-carbon chain and three '']'' double bonds; the first double bond is located at the sixth carbon from the omega end. DGLA is the elongation product of ] (GLA; 18:3, ω−6). GLA, in turn, is a desaturation product (]) of ] (18:2, ω−6). DGLA is made in the body by the elongation of GLA, by an efficient enzyme which does not appear to suffer any form of (dietary) inhibition. DGLA is an extremely uncommon fatty acid, found only in trace amounts in animal products.<ref>Horrobin, D. F., 1990a. | ||
Gamma linolenic acid. | |||
Rev. Contemp. Pharmacother. 1, 1-45</ref><ref>Huang, Y.-S. and Mills, D. E. (Eds.), 1996. | |||
Gamma-linolenic acid metabolism and its roles in nutrition and medicine. | |||
AOCS Press, Champaign, Illinois, 319 pp.</ref> | |||
== Biological effects== | == Biological effects== | ||
The ] metabolites of DGLA are: | The ] metabolites of DGLA are: | ||
* Series-1 ]s (thromboxanes with 1 double-bond), via the ] pathways. | * Series-1 ]s (thromboxanes with 1 double-bond), via the ] pathways. | ||
* Series-1 ]s, via the COX-1 and COX-2 pathways.<ref>{{cite journal | |
* Series-1 ]s, via the COX-1 and COX-2 pathways.<ref>{{cite journal |author1=Fan, Yang-Yi |author2=Chapkin, Robert S. | title=Importance of Dietary γ-Linolenic Acid in Human Health and Nutrition | date=9 September 1998 | journal=Journal of Nutrition | volume=128 | issue=9 | pages=1411–4 | pmid=9732298 | doi=10.1093/jn/128.9.1411 | doi-access=free}}</ref> | ||
* A 15-hydroxyl derivative that blocks the transformation of ] to ]s.<ref>{{cite |
* A 15-hydroxyl derivative that blocks the transformation of ] to ]s.<ref>{{cite journal |author1=Belch, Jill J.F. |author-link=Jill Belch |author2=Hill, Alexander |title=Evening primrose oil and borage oil in rheumatologic conditions |journal=The American Journal of Clinical Nutrition |date=January 2000 |volume=71 |issue=1 Suppl |pages=352S–6S |doi=10.1093/ajcn/71.1.352S |pmid=10617996 |doi-access=free }}</ref> | ||
All of these effects are anti-inflammatory. This is in marked contrast with the analogous metabolites of ] (AA) which are the series-2 thromboxanes and prostanoids and the series-4 leukotrienes. In addition to yielding anti-inflammatory eicosanoids, DGLA ] with AA for COX and lipoxygenase, inhibiting the production of AA's eicosanoids. | All of these effects are anti-inflammatory. This is in marked contrast with the analogous metabolites of ] (AA), which are the series-2 thromboxanes and prostanoids and the series-4 leukotrienes. In addition to yielding anti-inflammatory eicosanoids, DGLA ] with AA for COX and lipoxygenase, inhibiting the production of AA's eicosanoids. | ||
Taken orally in a small study, DGLA produced antithrombotic effects.<ref name="pmid338112">{{cite journal | Taken orally in a small study, DGLA produced ] effects.<ref name="pmid338112">{{cite journal | ||
| |
|vauthors=Kernoff PB, Willis AL, Stone KJ, Davies JA, McNicol GP |title=Antithrombotic potential of dihomo-γ-linolenic acid in man | ||
⚫ | |journal=British Medical Journal | ||
|title=Antithrombotic potential of dihomo-γ-linolenic acid in man | |||
⚫ | |journal=British |
||
|volume=2 | |volume=2 | ||
|issue=6100 | |issue=6100 | ||
|pages= |
|pages=1441–1444 | ||
|year=1977 | |year=1977 | ||
|pmid=338112 | |pmid=338112 | ||
|doi=10.1136/bmj.2.6100.1441 | |||
|pmc=1632618 | |||
}}</ref> Supplementing dietary GLA increases serum DGLA, as well as serum AA levels.<ref name="pmid9237935">{{cite journal | }}</ref> Supplementing dietary GLA increases serum DGLA, as well as serum AA levels.<ref name="pmid9237935">{{cite journal | ||
|author=Johnson MM |
|author=Johnson MM | ||
|title=Dietary supplementation with γ-linolenic acid alters fatty acid content and eicosanoid production in healthy humans | |title=Dietary supplementation with γ-linolenic acid alters fatty acid content and eicosanoid production in healthy humans | ||
|journal=J. Nutr. | |journal=J. Nutr. | ||
Line 45: | Line 59: | ||
|year=1997 | |year=1997 | ||
|pmid=9237935 | |pmid=9237935 | ||
|name-list-style=vanc|author2=Swan DD | |||
|author3=Surette ME | |||
|display-authors=3 | |||
|last4=Stegner | |||
|first4=J | |||
|last5=Chilton | |||
|first5=T | |||
|last6=Fonteh | |||
|first6=AN | |||
|last7=Chilton | |||
|first7=FH | |||
|doi=10.1093/jn/127.8.1435 | |||
|doi-access=free | |||
}}</ref> Cosupplementation with GLA and EPA lowers serum AA levels by blocking Δ-5-desaturase activity, while also lowering leukotriene synthesis in neutrophils.<ref name="pmid10917903">{{cite journal | }}</ref> Cosupplementation with GLA and EPA lowers serum AA levels by blocking Δ-5-desaturase activity, while also lowering leukotriene synthesis in neutrophils.<ref name="pmid10917903">{{cite journal | ||
| |
|vauthors=Barham JB, Edens MB, Fonteh AN, Johnson MM, Easter L, Chilton FH |title=Addition of eicosapentaenoic acid to gamma-linolenic acid-supplemented diets prevents serum arachidonic acid accumulation in humans | ||
|title=Addition of eicosapentaenoic acid to gamma-linolenic acid-supplemented diets prevents serum arachidonic acid accumulation in humans | |||
|journal=J. Nutr. | |journal=J. Nutr. | ||
|volume=130 | |volume=130 | ||
|issue=8 | |issue=8 | ||
|pages=1925–31 | |pages=1925–31 | ||
| |
|date=August 2000 | ||
|doi=10.1093/jn/130.8.1925 | |||
|month=August | |||
|pmid=10917903 | |pmid=10917903 | ||
|doi-access=free | |||
}}</ref> | }}</ref> | ||
] is a rich source of γ-linolenic acid—the dietary precursor to DGLA.]] | ] is a rich source of γ-linolenic acid—the dietary precursor to DGLA.]] | ||
== See also == | |||
* ] | |||
==References== | ==References== | ||
{{ |
{{Reflist}} | ||
{{Fatty acids}} | {{Fatty acids}} | ||
{{Prostanoidergics}} | |||
{{Leukotrienergics}} | |||
{{DEFAULTSORT:Dihomo-gamma-linolenic acid}} | |||
⚫ | ] | ||
] | ] | ||
⚫ | ] | ||
{{biochem-stub}} | |||
] | |||
] |
Latest revision as of 01:53, 19 July 2024
"DGLA" redirects here. For the algebra, see Differential graded Lie algebra.Names | |
---|---|
Preferred IUPAC name (8Z,11Z,14Z)-Icosa-8,11,14-trienoic acid | |
Other names cis,cis,cis-8,11,14-Eicosatrienoic acid; DGLA; Diroleuton (INNTooltip International Nonproprietary Name) | |
Identifiers | |
CAS Number | |
3D model (JSmol) | |
ChemSpider | |
ECHA InfoCard | 100.015.667 |
PubChem CID | |
UNII | |
CompTox Dashboard (EPA) | |
InChI
| |
SMILES
| |
Properties | |
Chemical formula | C20H34O2 |
Molar mass | 306.490 g·mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Y verify (what is ?) Infobox references |
Dihomo-γ-linolenic acid (DGLA) is a 20-carbon ω−6 fatty acid (also called, cis,cis,cis-8,11,14-eicosatrienoic acid). In physiological literature, it is given the name 20:3 (ω−6). DGLA is a carboxylic acid with a 20-carbon chain and three cis double bonds; the first double bond is located at the sixth carbon from the omega end. DGLA is the elongation product of γ-linolenic acid (GLA; 18:3, ω−6). GLA, in turn, is a desaturation product (Delta 6 desaturase) of linoleic acid (18:2, ω−6). DGLA is made in the body by the elongation of GLA, by an efficient enzyme which does not appear to suffer any form of (dietary) inhibition. DGLA is an extremely uncommon fatty acid, found only in trace amounts in animal products.
Biological effects
The eicosanoid metabolites of DGLA are:
- Series-1 thromboxanes (thromboxanes with 1 double-bond), via the COX-1 and COX-2 pathways.
- Series-1 prostanoids, via the COX-1 and COX-2 pathways.
- A 15-hydroxyl derivative that blocks the transformation of arachidonic acid to leukotrienes.
All of these effects are anti-inflammatory. This is in marked contrast with the analogous metabolites of arachidonic acid (AA), which are the series-2 thromboxanes and prostanoids and the series-4 leukotrienes. In addition to yielding anti-inflammatory eicosanoids, DGLA competes with AA for COX and lipoxygenase, inhibiting the production of AA's eicosanoids.
Taken orally in a small study, DGLA produced antithrombotic effects. Supplementing dietary GLA increases serum DGLA, as well as serum AA levels. Cosupplementation with GLA and EPA lowers serum AA levels by blocking Δ-5-desaturase activity, while also lowering leukotriene synthesis in neutrophils.
See also
References
- Horrobin, D. F., 1990a. Gamma linolenic acid. Rev. Contemp. Pharmacother. 1, 1-45
- Huang, Y.-S. and Mills, D. E. (Eds.), 1996. Gamma-linolenic acid metabolism and its roles in nutrition and medicine. AOCS Press, Champaign, Illinois, 319 pp.
- Fan, Yang-Yi; Chapkin, Robert S. (9 September 1998). "Importance of Dietary γ-Linolenic Acid in Human Health and Nutrition". Journal of Nutrition. 128 (9): 1411–4. doi:10.1093/jn/128.9.1411. PMID 9732298.
- Belch, Jill J.F.; Hill, Alexander (January 2000). "Evening primrose oil and borage oil in rheumatologic conditions". The American Journal of Clinical Nutrition. 71 (1 Suppl): 352S – 6S. doi:10.1093/ajcn/71.1.352S. PMID 10617996.
- Kernoff PB, Willis AL, Stone KJ, Davies JA, McNicol GP (1977). "Antithrombotic potential of dihomo-γ-linolenic acid in man". British Medical Journal. 2 (6100): 1441–1444. doi:10.1136/bmj.2.6100.1441. PMC 1632618. PMID 338112.
- Johnson MM, Swan DD, Surette ME, et al. (1997). "Dietary supplementation with γ-linolenic acid alters fatty acid content and eicosanoid production in healthy humans". J. Nutr. 127 (8): 1435–44. doi:10.1093/jn/127.8.1435. PMID 9237935.
- Barham JB, Edens MB, Fonteh AN, Johnson MM, Easter L, Chilton FH (August 2000). "Addition of eicosapentaenoic acid to gamma-linolenic acid-supplemented diets prevents serum arachidonic acid accumulation in humans". J. Nutr. 130 (8): 1925–31. doi:10.1093/jn/130.8.1925. PMID 10917903.
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