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      Improvement of serum lipid parameters in consumers of Mexican Wagyu-Cross beef: A randomized controlled trial.

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          Abstract

          Beef is considered an excellent source of high-quality protein and micronutrients. The high saturated fatty acid (SFA) composition of beef has been associated with cardiovascular diseases; however, this is a controversial issue because at present, no evidence has scientifically proven such an association. Wagyu cattle have been used as an option to generate high-quality fatty acids (FAs) in beef and have been crossed with local beef cattle (Wagyu-Cross). In Mexico, Wagyu-Cross is marketed assuming the same quality as purebred Wagyu meat without scientific support. This study aimed to determine whether the differences in the FA composition of Wagyu-Cross and commercial beef affected lipid metabolism in frequent consumers of beef. The study is a randomized, controlled, double-blinded phase IV clinical trial. Thirty-four volunteers completed treatments in which 120 g ground beef was consumed 3 days per week for 2 weeks. Volunteers were randomized to the "A" (commercial meat) or "B" (Wagyu-Cross meat) groups. The beef fat content was 87% higher, the SFA content was 2.3% lower, and the monounsaturated fatty acid (MUFA) C18:1 n-9 concentrations were higher in Wagyu-Cross beef than in commercial beef. The B group exhibited a significantly larger change from baseline in the serum lipid profile in total cholesterol (TC) (-4.7% versus +6.9%), low-density lipoprotein (LDL) (-4.1% versus +10.0%), nonhigh-density lipoprotein (non-HDL) (-6.1% versus +4.9%), and the ratio of three atherogenic indexes-TC/HDL (-3.5% versus +6.4%), LDL/HDL (-2.8% versus +14.6%), and non-HDL/HDL (-4.7% versus +9.3%)-than the A group. This result confirms that meat FA composition is a key point for redirecting cattle breeding strategies and promotes beef as a healthful protein source. PRACTICAL APPLICATION: Here, we found new evidence based on a clinical trial that beef with a favorable fatty acid composition (i.e., monounsaturated fatty acid and polyunsaturated fatty acid content) is a key factor in improving parameters associated with consumer health. This information will support the design of cattle breeding strategies as an option to promote beef consumption as a healthier protein source and create opportunities for the development of the functional food industry.

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          Author and article information

          Journal
          J Food Sci
          Journal of food science
          Wiley
          1750-3841
          0022-1147
          Jun 2021
          : 86
          : 6
          Affiliations
          [1 ] Centro de Biotecnología Genómica, LBA, Instituto Poliécnico Nacional, Blvd del Maestro esq Elias Piña, Reynosa, México, 88710, Mexico.
          [2 ] Facultad de Medicina de la Universidad de Colima & Instituto Estatal de Cancerología de los Servicios de Salud del Estado de Colima, Colima, Mexico.
          [3 ] Escuela Nacional de Medicina y Homeopatía, Mexico City, Mexico.
          [4 ] Escuela de Medicina, Tecnológico de Monterrey, Monterrey, Mexico.
          Article
          10.1111/1750-3841.15739
          33929040
          9fe2d758-0f13-48ce-8dc5-5dddda7ce833
          History

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