scholarly journals Levels of L-carnitine in human seminal plasma are associated with sperm fatty acid composition

2022 ◽  
Vol 0 (0) ◽  
pp. 0
Author(s):  
Mario Iliceto ◽  
MetteHaug Stensen ◽  
JorunnM Andersen ◽  
TrineB Haugen ◽  
Oliwia Witczak
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Seminal Plasma ◽  
Human Seminal Plasma

96 EFFECT OF DIETARY SUPPLEMENTATION WITH TUNA OIL ON THE LIPID COMPOSITION OF BOAR SPERMATOZOA AND CHARACTERISTICS OF SEMEN

2008 ◽  
Vol 20 (1) ◽  
pp. 128
Author(s):  
C. A. A. Torres ◽  
E. A. M. Amorim ◽  
L. S. Amorim ◽  
J. K. Graham ◽  
M. Meyers
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Vitamin E ◽  
Acid Composition ◽  
Sperm Motility ◽  
Seminal Plasma ◽  
Lipid Composition ◽  
Dietary Supplementation ◽  
Boar Spermatozoa

In most mammals, docosahexaenoic acid (DHA) is the dominant polyunsaturated fatty acid (PUFA), although, in several species, docosapentaenoic acid is also a major component of the sperm cell membranes. The amount of DHA in spermatozoa is positively correlated with sperm motility. The effect of dietary supplementation with tuna oil (TO) on the lipid and fatty acid composition of boar spermatozoa and the relationship between the changes in composition and boar semen characteristics were studied. Twenty-four boars were distributed in a completely randomized factorial design (2 � 3) with two oil sources (soybean and tuna) and three levels of antioxidant (150, 300, and 450 mg of vitamin E/kg). The diets consisted of a basal diet that was supplemented with 30 g soybean or TO per kg diet. During a period of 10 weeks of feeding the diets, one ejaculate from each boar was collected per week. The sperm was diluted 1:1 with Beltsville thawing solution (BTS) and divided into three portions destined to cooling (5 and 17�C) and freezing. The sperm diluted for cooling at either temperature was stored in plastic bottles for 3 days. After dilution with BTS, the sperm for freezing was centrifuged and rediluted with freezing extender before it was stored in 0.5-mL straws. Thawing was achieved by placing the straws in a water bath (37�C) for 30 s. Motility, vigor, hypoosmotic swelling (host), and morphology were assessed. For determining the fatty acid composition of the spermatozoa and seminal plasma, a sample of 15 mL was taken from each ejaculate shortly after collection and centrifuged for 20 min at 1000g. Sperm motility and vigor were analyzed by placing a sample on a pre-warmed (37�C) microscopic slide, covering with a coverslip, and examining under a light microscope at a magnification of 200�. For host assessment in each case, a volume of 10 µL was mixed with 1 mL hypoosmotic solution (100 mOsm L–1) and incubated for 30 min in a water bath (37�C). After incubation, 50 µL of formol-saline was added to each tube. Sequentially, 20 µL of every sample was smeared on a microscope slide and observed with oil immersion using a phase contrast microscope. A minimum of 200 cells was observed and classified as non-coiled and coiled. Lipid peroxidation was measured using the thiobarbituric acid reaction. Treatment differences for sperm were determined using analysis of variance for means. The proportion of DHA in sperm phospholipid fatty acids increased in semen fatty acid composition after 1 week of feeding TO. The concentrations of the fatty acids were unchanged in the seminal plasma as a result of the diets fed. The proportion of spermatozoa with abnormal morphologies decreased in boars supplemented with TO (P < 0.05). The TO diet showed the lowest level of total antioxidants in the semen (P < 0.05); however, when the diet was supplemented with the higher vitamin E level, an increase in sperm motility and vigor was observed (P < 0.05). Therefore, dietary supplementation with TO alters the lipid composition of the membrane and has a beneficial effect on both cooled and cryopreserved boar spermatozoa by decreasing cold shock during cooling and thus increasing cryosurvival.

Platelet Aggregation in Finnish Men and Its Relation to Fatty Acids in Platelets, Plasma and Adipose Tissue

1985 ◽  
Vol 54 (03) ◽  
pp. 563-569 ◽  
Author(s):  
M K Salo ◽  
E Vartiainen ◽  
P Puska ◽  
T Nikkari
Keyword(s):  
Fatty Acids ◽  
Adipose Tissue ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Platelet Aggregation ◽  
Acid Composition ◽  
Saturated Fatty Acids ◽  
Free Living ◽  
Ω3 Fatty Acids ◽  
Induced Aggregation

SummaryPlatelet aggregation and its relation to fatty acid composition of platelets, plasma and adipose tissue was determined in 196 randomly selected, free-living, 40-49-year-old men in two regions of Finland (east and southwest) with a nearly twofold difference in the IHD rate.There were no significant east-southwest differences in platelet aggregation induced with ADP, thrombin or epinephrine. ADP-induced platelet secondary aggregation showed significant negative associations with all C20-C22 ω3-fatty acids in platelets (r = -0.26 - -0.40) and with the platelet 20: 5ω3/20: 4ω 6 and ω3/ ω6 ratios, but significant positive correlations with the contents of 18:2 in adipose tissue (r = 0.20) and plasma triglycerides (TG) (r = 0.29). Epinephrine-induced aggregation correlated negatively with 20: 5ω 3 in plasma cholesteryl esters (CE) (r = -0.23) and TG (r = -0.29), and positively with the total percentage of saturated fatty acids in platelets (r = 0.33), but had no significant correlations with any of the ω6-fatty acids. Thrombin-induced aggregation correlated negatively with the ω3/6ω ratio in adipose tissue (r = -0.25) and the 20: 3ω6/20: 4ω 6 ratio in plasma CE (r = -0.27) and free fatty acids (FFA) (r = -0.23), and positively with adipose tissue 18:2 (r = 0.23) and 20:4ω6 (r = 0.22) in plasma phospholipids (PL).The percentages of prostanoid precursors in platelet lipids, i. e. 20: 3ω 6, 20: 4ω 6 and 20 :5ω 3, correlated best with the same fatty acids in plasma CE (r = 0.32 - 0.77) and PL (r = 0.28 - 0.74). Platelet 20: 5ω 3 had highly significant negative correlations with the percentage of 18:2 in adipose tissue and all plasma lipid fractions (r = -0.35 - -0.44).These results suggest that, among a free-living population, relatively small changes in the fatty acid composition of plasma and platelets may be reflected in significant differences in platelet aggregation, and that an increase in linoleate-rich vegetable fat in the diet may not affect platelet function favourably unless it is accompanied by an adequate supply of ω3 fatty acids.

Health Benefits of Pumpkin Seed and Nutrition Profile of 35 Pumpkin Accessions

EDIS ◽  
2017 ◽  
Vol 2017 (6) ◽  
Author(s):  
Geoffrey M. Meru ◽  
Yuqing Fu ◽  
Dayana Leyva ◽  
Paul Sarnoski ◽  
Yavuz Yagiz
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Health Benefits ◽  
Pumpkin Seed ◽  
Production Practices

This article aims to summise production and nutrition aspects of pumpkin seed. Specifically, it focuses on health benefits of the seeds, production practices and provides data on the oil, protein and fatty acid composition of 35 pumpkin accessions.  

The effect of SNP (rs174537) in FADS1 gene on fatty acid composition in serum lipids

2020 ◽  
Author(s):  
Tereza Metelcová ◽  
Markéta Vaňková ◽  
Hana Zamrazilová ◽  
Milena Hovhannisyan ◽  
Eva Tvrzická ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Serum Lipids
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