Lack of effect of spironolactone on hair shaft diameter in hirsute females.

Objectives: To investigate the trichoscopic features of female pattern hair loss (FPHL) in Chinese Han patients and analyze the difference between male and female patients with FPHL.Materials and Methods: Trichoscopic images were taken in four different scalp areas, including right frontal hairline, vertex, right parietal and occipital areas. Hair density, hair shaft diameter, vellus hair ratio and single hair follicle unit ratio were counted manually and analyzed.Results: Seventy-three subjects were enrolled in this study, including 38 patients with FPHL (28 females and 10 males) and 35 normal controls without hair loss. The hair density and hair shaft diameter of FPHL patients reduced in the whole scalp. Vellus hair ratio and single hair follicle unit ratio were both increased in FPHL compared to normal controls. The vertex was the most affected area and the hair shaft diameter showed the most significant difference. Parietal and occipital area were also affected in FPHL. The reduction or increase was correlated with the severity of Ludwig staging. Very few gender differences were detected in male and female FPHL patients.Conclusion: FPHL patients showed decreased hair density and hair shaft diameter, accompanied by increased vellus hair ratio and single hair follicle unit ratio. Parietal and occipital area can be also affected in FPHL, though not as severe as in vertex area. FPHL in male basically has the same characteristic as those in female patients.Limitation: The main limitation of the study is the small sample size which only enrolled 10 male FPHL patients, in comparison to the female cases. The findings could not be representative of the normal population with the limited sample size.

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Levonorgestrel effects on serum androgens, sex hormone–binding globulin levels, hair shaft diameter, and sexual function

Fertility and Sterility ◽

10.1016/j.fertnstert.2008.12.095 ◽

2010 ◽

Vol 93 (6) ◽

pp. 1997-2003 ◽

Cited By ~ 9

Author(s):

George Kovalevsky ◽

Susan A. Ballagh ◽

Frank Z. Stanczyk ◽

Jennifer Lee ◽

Joann Cooper ◽

...

Keyword(s):

Sexual Function ◽

Hair Shaft ◽

Sex Hormone ◽

Sex Hormone Binding Globulin ◽

Hormone Binding ◽

Shaft Diameter ◽

Serum Androgens

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"BEAU'S LINES" IN HAIR. Reduction of Hair Shaft Diameter Associated With Illness.

British Journal of Dermatology ◽

10.1111/j.1365-2133.1967.tb11395.x ◽

1967 ◽

Vol 79 (1) ◽

pp. 43-49 ◽

Cited By ~ 18

Author(s):

R. T. SIMS

Keyword(s):

Hair Shaft ◽

Shaft Diameter

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In vitro determination of Mexican Mestizo hair shaft diameter using optical coherence tomography

Skin Research and Technology ◽

10.1111/srt.12425 ◽

2017 ◽

Vol 24 (2) ◽

pp. 274-277 ◽

Cited By ~ 2

Author(s):

Maria Abril Martinez-Velasco ◽

Marina Perper ◽

Austin J Maddy ◽

Jessica Cervantes ◽

Ariel E. Eber ◽

...

Keyword(s):

Optical Coherence Tomography ◽

Hair Shaft ◽

Optical Coherence ◽

Mexican Mestizo ◽

Shaft Diameter

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Human-hair analysis

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100124835 ◽

1992 ◽

Vol 50 (1) ◽

pp. 886-887

Author(s):

Brenda E. Lambert ◽

Ernest C. Hammond

Keyword(s):

Human Hair ◽

Hair Analysis ◽

Hair Shaft ◽

White Female ◽

Chemical Processing ◽

X Ray ◽

Hair Samples ◽

Wave Technique ◽

Permanent Wave ◽

Scanning Electron

The purpose of this study was to examine the external structure of four human hair shaft samples with the scanning Electron Microscope (SEM) and to obtain information regarding the chemical composition of hair by using the attached x ray microanalysis unit.The hair samples were obtained from two female subjects. Sample A was taken from a black female and had not undergone any type of chemical processing. Sample B, C, D were taken from a white female, and were natural, processed, and unpigmented, i.e. “gray”, respectively. Sample C had been bleached, tinted, and chemically altered using a permanent wave technique.

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High-voltage EM description of the types and distribution of sensory endings in the inner conical body of the rat vibrissal follicle-sinus complex

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010015959x ◽

1990 ◽

Vol 48 (3) ◽

pp. 410-411

Author(s):

Tony M. Mosconi ◽

Min J. Song ◽

Frank L. Rice

Keyword(s):

Mammalian Species ◽

Dorsal Side ◽

Hair Shaft ◽

Sensory Innervation ◽

Conical Body ◽

Adult Rats ◽

Perpendicular Plane ◽

Ultrastructural Studies ◽

Unmyelinated Axons ◽

Sensory Endings

Whiskers or vibrissal follicle-sinus complexes (F-SCs) on the snouts of many mammalian species are structures that have complex, dense sensory innervation. The innervation of F-SCs is remarkably similar in all species with the exception of one site - the inner conical body (ICB). The ICB is an elongated cylindrical structure that encircles the hair shaft near the neck of the follicle. This site has received only cursory attention in ultrastructural studies of the F-SCAdult rats were perfused after the method of Renehan and Munger2. F-SCs were quartered longitudinally and embedded separately in Epon-Araldite. Serial 0.25 μm sections were cut in either the longitudinal or perpendicular plane through the ICB and examined with an AEI EM7 1.2 MV HVEM (Albany, NY) at 1000 KV. Sensory endings were reconstructed from serial micrographs through at least 20 μm in the longitudinal plane and through 10 μm in the perpendicular plane.From two to six small superficial vibrissal nerves converge upon the neck of the F-SC and descend into the ICB. The nerves branch into smaller bundles of myelinated and unmyelinated axons along the dorsal side of the hair shaft.

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Pulmonary hair embolism in a rescued free-ranging Eurasian otter Lutra lutra in Kinmen, Taiwan

Diseases of Aquatic Organisms ◽

10.3354/dao03532 ◽

2020 ◽

Vol 142 ◽

pp. 55-61

Author(s):

WT Li ◽

YL Chiang ◽

TY Chen ◽

CL Lai

Keyword(s):

Foreign Body ◽

Traumatic Injury ◽

Lung Parenchyma ◽

Giant Cells ◽

Hair Shaft ◽

Lutra Lutra ◽

Lung Lobe ◽

Eurasian Otter ◽

Foreign Body Giant Cells ◽

Free Ranging

Eurasian otters Lutra lutra are listed as Near Threatened on the IUCN Red List and are imperiled by habitat loss, water pollution, and poaching. Harassment and attacks by stray animals are also recognized threats to the health of wild Eurasian otters. Pulmonary hair embolism is a possible complication in animals with deep traumatic injury, but to date no cases have been reported in wildlife. A free-ranging, adult male Eurasian otter was rescued due to severe emaciation and multiple bite wounds. The otter died 3 d after rescue and was necropsied. Grossly, a 1.5 × 1.5 × 1.5 cm firm nodule was observed in the left cranial lung lobe. Histologically, a fragment of hair shaft surrounded by multinucleated foreign body giant cells was observed in a medium-sized vein, and extensive eosinophilic infiltration was noted in the adjacent vascular wall and lung parenchyma. Based on the gross and histological findings, the pulmonary lesion was consistent with eosinophilic pneumonia and vasculitis induced by hair embolism. The presence of well-formed multinucleated foreign body giant cells and eosinophils may imply a late stage of foreign body reaction, and thus the presumptive source of hair embolism is an animal bite. This is the first report of pulmonary hair embolism associated with animal bite in a rescued free-ranging Eurasian otter.

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