14 citations
,
August 2010 in “The Open Dermatology Journal” This article highlights the absence of empirical research on the psychological impact of female pattern hair loss and treatment initiation in Australian women, reporting no new clinical findings.
8 citations
,
April 2013 in “Advances in Wound Care” This study found that absence of α3 integrin in mice led to faster wound healing but also caused inflammation, hair loss, and skin defects, suggesting complex roles in skin integrity and repair.
3 citations
,
August 2020 in “PubMed” This review discusses the absence of clinical trials on natural ingredients for managing Central Centrifugal Cicatricial Alopecia and highlights a need for more research.
11 citations
,
May 2020 in “Frontiers in psychiatry” This study found that experiencing childhood abuse is associated with higher BMI, but hair cortisol and cortisone do not mediate this relationship.
2 citations
,
July 2025 in “Forensic Sciences” This review concludes that anabolic–androgenic steroid abuse may lead to significant neurotoxicity, affecting brain structure, neurotransmitter systems, and increasing the risk of mood disorders and cognitive deficits.
81 citations
,
January 2006 in “Journal of cellular physiology” This study found that the absence of the vitamin D receptor disrupts hair follicle structure during the first catagen in mice, linked to increased expression of the hairless gene.
57 citations
,
May 2016 in “Matrix Biology” This study found that the absence of laminin α5 in adult mice's epidermal basement membrane led to keratinocyte hyperproliferation and immune cell changes, affecting hair follicle development through altered growth factor expression.
56 citations
,
September 2014 in “Molecular Endocrinology” This study found that the absence of unliganded vitamin D receptor significantly impairs cWnt and hedgehog signaling pathways necessary for hair cycle initiation in VDR-null mice.
56 citations
,
November 2012 in “Endocrinology” This study found that the absence of vitamin D receptor signaling in mice impairs the inflammatory response to skin injury, particularly affecting macrophage recruitment and granulation tissue formation.
56 citations
,
February 2012 in “Developmental biology” This study found that the absence of Sostdc1 in mice alters mammary gland and hair follicle development, particularly by increasing vibrissae numbers and causing unusual nipple-like structures.
53 citations
,
August 2005 in “The Journal of Cell Biology” This study found that the absence of Sgk3 in mice leads to impaired hair follicle maturation, characterized by reduced cell proliferation, increased apoptosis, and premature regression.
52 citations
,
February 2012 in “PloS one” This study found that the absence of Ctip2 in epidermal keratinocytes led to impaired wound healing in mice, affecting cell migration, proliferation, and hair follicle stem cell maintenance.
50 citations
,
October 1986 in “European journal of pediatrics” This case study reported that absence of alopecia does not reliably predict responsiveness to vitamin D treatment in Vitamin D-dependent rickets type II, as demonstrated by a patient with normal hair growth who showed extreme resistance.
36 citations
,
January 2007 in “Archives of Histology and Cytology” This study suggests that the absence of alpha5(IV)/alpha6(IV) chains in certain subepidermal basement membrane spots may relate to interactions with melanocytes in human skin.
23 citations
,
February 2015 in “The American journal of pathology” This study found that the absence of sebaceous glands may be an early factor in the development of keratosis pilaris, leading to hair shaft and skin barrier abnormalities, independent of filaggrin mutations.
21 citations
,
October 2017 in “Cell death and disease” This study found that the absence of the stress-responsive protein Sesn2 increased hair cell susceptibility to gentamicin in the inner ear, indicating Sesn2's potential protective role against aminoglycoside-induced damage.
5 citations
,
June 1994 in “Journal of Cutaneous Pathology” In this study, CD44 expression was absent in alopecia areata-affected scalp, with some patients regaining expression after treatment despite no significant hair regrowth, suggesting involvement in the disease's pathogenesis.
March 2021 in “bioRxiv (Cold Spring Harbor Laboratory)” This study found that the absence of Hif-p4h-2 in specific mouse skin cells disrupted hair follicle development, leading to hair loss due to irregular keratin formation and pathway signaling.
April 2016 in “Journal of Investigative Dermatology” This study reported that the absence of Lsh in skin led to significant epidermal hyperplasia and altered gene expression, suggesting its crucial role in regulating epidermal proliferation, differentiation, and wound healing.
October 2014 in “Dialnet (Universidad de la Rioja)” This research concluded that Snail2's absence in myeloid progenitors promotes tumor progression in mice, and specific zinc fingers are crucial for Snail1 and Snail2's roles in establishing epithelial-to-mesenchymal transition.
January 2012 in “Anales (Reial Acadèmia de Medicina de la Comunitat Valenciana)” This study found that SRD5A2 expression is absent in one third of benign adult prostates and is associated with hypermethylation, suggesting potential personalization of treatment for prostatic diseases based on methylation status.
April 2018 in “Journal of Investigative Dermatology” This study found that the absence of Hes1 in hair follicles delays secondary hair germ activation and shortens the anagen phase, impacting HFSC self-renewal and long-term hair regeneration.
April 2026 in “International Journal of Impotence Research” This review outlines the major health consequences of anabolic-androgenic steroid abuse, with a focus on sexual and reproductive issues, and suggests management prioritizes cessation and relapse prevention due to lack of robust randomized trials.
Dermatologists help detect gender-based violence by identifying skin signs of abuse.
195 citations
,
November 2001 in “The Journal of Cell Biology” This study found that desmocollin 1 is crucial for strong adhesion and barrier maintenance in the mouse epidermis, with its absence leading to skin and hair issues resembling chronic dermatitis.
30 citations
,
May 1980 in “Journal of the American Academy of Dermatology” In this study, three patients with alopecia areata exhibited spotty absence of the whiteness of their nail lunulae, potentially due to defects in the matrical epithelium.
24 citations
,
November 1978 in “JAMA” This study reports that valproic acid is effective in treating absence seizures and shows improvement in other types of seizures, though about 20% of patients experienced adverse effects.
21 citations
,
September 2004 in “Fertility and Sterility” Amenorrhea, or the absence of periods, should be evaluated by age 15 or within five years of early breast development, and is most commonly caused by conditions like polycystic ovary syndrome and hypothalamic amenorrhea.
2 citations
,
November 1978 in “JAMA” This study found that valproic acid is effective in controlling absence seizures and can improve other seizure types, but 20% of patients experience mostly transient adverse reactions.
November 2021 in “International journal of research - granthaalayah” This study presents additional data suggesting that the absence of nerve endings in certain segments of human hair follicles influences the asymmetrical distribution of electrical charges, as indicated by no precipitation of Potassium Ferricyanide crystals.