January 2011 in “대한피부과학회지” A 7-year-old girl was diagnosed with trichothiodystrophy due to low sulfur levels in her hair.
9 citations
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August 2007 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Sheep wool follicles absorb different amino acids at various rates and locations, which could affect wool growth based on diet and genetics.
October 2020 in “The American journal of gastroenterology” Para-aminobenzoic acid in hair supplements can cause autoimmune hepatitis.
19 citations
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February 2001 in “Journal of paediatrics and child health” A new mutation in the mitochondrial DNA was found in a boy with MELAS, even though his family didn't show typical signs.
December 2025 in “Universal library of medical and health sciences.” Amino acids like arginine and cysteine protect hair during chemical treatments, keeping it strong and less brittle.
15 citations
,
August 2022 in “The Application of Clinical Genetics” ABCD1 gene mutations cause adrenomyeloneuropathy, leading to symptoms like limb weakness and spasticity, with management focusing on rehabilitation and spasticity treatment.
29 citations
,
December 2017 in “Molecular therapy” Enzyme replacement therapy improved multiple symptoms of homocystinuria in mice.
April 2025 in “Indian Journal of Paediatric Dermatology” Zinc supplements improved the girl's skin and hair condition.
2 citations
,
October 2023 in “Philosophical transactions - Royal Society. Biological sciences” Enzymes that change arginine to citrulline are important for skin barrier and hair formation, and their malfunction can lead to skin conditions and hair disorders.
7 citations
,
January 2018 in “Neurodegenerative Diseases” Researchers found a new ABCD1 gene mutation linked to a rare brain and nerve disorder with unusual brain changes.
2 citations
,
October 2016 in “OPAL (Open@LaTrobe) (La Trobe University)” The Swedish neonatal screening program effectively detects PKU, galactosaemia, and biotinidase deficiency with low false positives.
1 citations
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January 1996 Cysteine and arginine are essential for hair growth and thickness.
June 2023 in “International Journal of Research in Medical Sciences” Two brothers from Bangladesh were diagnosed with X-linked adrenoleukodystrophy, showing neurological and adrenal symptoms.
45 citations
,
January 1977 in “Advances in experimental medicine and biology” Hair follicles have an enzyme that converts arginine to citrulline in proteins.
2 citations
,
January 2024 in “Revista Paulista de Pediatria” A rare genetic mutation caused severe symptoms in a 6-year-old girl with mandibuloacral dysplasia type A.
Defective protein folding due to a mutation is key in ANE syndrome.
184 citations
,
August 1983 in “The journal of pediatrics/The Journal of pediatrics” Biotinidase deficiency has various symptoms and can be treated with biotin supplements.
15 citations
,
January 1981 in “Neonatology” Amino acid levels in milk increase with protein and align with key growth stages in Macropus eugenii.
2 citations
,
June 2013 in “Journal of Clinical Pathology” The LMNA mutation affects skin structure even in asymptomatic carriers.
10 citations
,
June 2001 in “Annals of neurology” Alzheimer's patients have higher levels of certain chemicals in their hair.
Problems with arginine processing in hair follicles might contribute to common hair loss, and arginine supplements could help treat it.
ANE syndrome is caused by a mutation in the RBM28 protein that disrupts ribosome assembly.
5 citations
,
October 2007 in “PubMed” Amino acids in conditioners improve hair strength, hydration, and color retention.
4 citations
,
July 2019 in “Clinical and experimental dermatology” Early diagnosis and biotin treatment are crucial for infants with biotinidase deficiency to prevent severe complications.
29 citations
,
January 1996 in “The Journal of Clinical Endocrinology & Metabolism” A genetic mutation in a specific gene causes a salt-wasting condition in a Pakistani girl and her family.
April 2024 in “Current research in nutrition and food science” Taking an amino acid supplement improved skin, hair, and nail health in women.
4 citations
,
January 1970 in “Journal of Bangladesh College of Physicians and Surgeons” Early diagnosis and genetic counseling are crucial for managing adrenoleukodystrophy.
16 citations
,
January 2010 in “Journal of Korean medical science/Journal of Korean Medical Science” A Korean boy's skin and digestive symptoms were caused by a rare genetic disorder that affects zinc absorption, and he got better with zinc supplements.
4 citations
,
December 2018 in “Macedonian Journal of Chemistry and Chemical Engineering” A new method accurately measures amino acids in treated hair, showing bleaching reduces amino acids while protein treatments increase them.
29 citations
,
July 1996 in “Acta Paediatrica” Biotin should be added to Japanese amino acid formula to prevent deficiency.