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Glossary Amino Acid Composition

specific types and quantities of amino acids in a sample

Amino Acid Composition, also known as Amino Acid Profile, refers to the specific types and quantities of amino acids present in a protein or a biological sample. Amino acids are the building blocks of proteins, and their composition determines the protein's structure, function, and nutritional value. Understanding the amino acid composition is crucial for various applications, including nutrition, medical research, and the development of treatments for conditions like alopecia, where protein synthesis and hair growth may be affected.

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Research

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research Amino Acid Compositions of Human Hair Fibrous Protein Components Purified with Two‐dimensional Electrophoresis

4 citations , December 1989 in “The Journal of Dermatology”

This study suggests that the amino acid composition of fibrous proteins in normal human hair is similar to that of stratum corneum proteins, particularly in cysteine and glycine content.

research Characterization of curved hair of Japanese women with reference to internal structures and amino acid composition.

13 citations , October 2008 in “PubMed”

This study examined hair curvature in Japanese women, finding that 47% have curved hair, and identified structural differences in hair fiber, which resemble those in wool fibers.

research J. Cosmet. Sci., 59, 263–289 (July/August 2008) Characterization of curved hair of Japanese women with reference to internal structures and amino acid composition

July 2009 in “International Journal of Cosmetic Science”

This study found that 53% of Japanese women have straight hair while 47% have varying degrees of curved hair, with distinct structural differences observed in the internal makeup of curved hair fibers.

research Protein and amino acid composition of hair from mice carrying the naked (N) gene

12 citations , August 1984 in “Genetics Research”

In this study, researchers found that the naked (N) gene in mice indirectly affects the synthesis of structural proteins in mouse hair, resulting in reduced high tyrosine protein content and unusual amino acid compositions.

research Characterization of Human KAP24.1, A Cuticular Hair Keratin-Associated Protein with Unusual Amino-Acid Composition and Repeat Structure

51 citations , January 2007 in “The journal of investigative dermatology/Journal of investigative dermatology”

This study identified a novel keratin-associated protein, KAP24.1, which is specifically expressed in the human scalp and located in the hair cuticle.

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Community Join

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community Peptides that Stop Hair Loss? | In-depth Literature Review Video

76 upvotes 2 years ago

Peptides like TB500, KPV, GHK-CU, and BPC-157 are overhyped for hair growth with limited proven effectiveness in humans. Combining peptides with delivery methods like iontophoresis and sonophoresis shows promise, but many claims remain unproven.

community Fats on your Head to Stop Hair Loss?

140 upvotes 2 years ago

The conversation discusses the potential of long-chain unsaturated fatty acids, like oleic and linoleic acid, as an additional treatment for hair loss, which may inhibit the enzyme responsible for converting testosterone to DHT and promote hair growth. Users humorously suggest using oils topically and discuss other hair loss treatments, but the main focus is on the science behind fatty acids and their role in hair health.

community The end of balding: We may have just found the secret to hair regrowth

in Technology 680 upvotes 1 year ago

MCL-1 is important for hair follicle stem cell survival, but its impact on human hair regrowth is unclear. Minoxidil and finasteride are the main treatments, with doubts about new discoveries leading to effective human solutions soon.

community Bee venom better than minoxidil?

in Research/Science 1061 upvotes 9 months ago

Bee venom at 0.001% concentration was more effective than 2% minoxidil in promoting hair growth in mice, possibly due to increased growth factors and reduced inflammation. Caution is advised due to potential allergic reactions and the reliance on animal data.

community Physio-metabolic method of treating androgenic alopecia. Cold receptors. The relationship between DHT, cold receptors, minoxidil and antiandrogens.

2 upvotes 1 year ago

A method for treating androgenic alopecia using minoxidil, antiandrogens, exercise, and cold exposure to promote hair growth. Environmental factors and lifestyle changes, like diet and exercise, can improve treatment effectiveness.

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Learn

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learn Vitamin B6

How does Vitamin B6 support healthy hair growth? Vitamin B6 is needed for amino acid metabolism, which normal hair growth depends on. There is no good evidence that extra B6 helps hair in people who are not deficient.

learn Biotin

B vitamin, often sold as a hair supplement

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SMP Specialist
Hairo Fallas
Newark, NJ, United States

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Hairo Fallas