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Science topic

Hair - Science topic

A filament-like structure consisting of a shaft which projects to the surface of the SKIN from a root which is softer than the shaft and lodges in the cavity of a HAIR FOLLICLE. It is found on most surfaces of the body.
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Publications related to Hair (10,000)
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Screen media usage among young children has increased dramatically in recent years. Although media consumption has been noted as an influencing factor in children's body image, the relationship between children's body satisfaction and screen media usage in children under 10 years old remains a less-explored topic. A cross-sectional study was design...
Chapter
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In recent years, the demand for natural fiber-reinforced composite products is increasing in various industries such as automobiles, buildings, and aerospace applications. In this paper, fiber-reinforced composite material using epoxy resin matrix, kenaf, Grewia, and hair fibers has been produced by compression molding method to improve the mechani...
Article
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Over 300 billion of cells die every day in the human body, producing a large number of endogenous apoptotic extracellular vesicles (apoEVs). Also, allogenic stem cell transplantation, a commonly used therapeutic approach in current clinical practice, generates exogenous apoEVs. It is well known that phagocytic cells engulf and digest apoEVs to main...
Article
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Gastrochilus wolongensis (Orchidaceae), a new orchid species from Sichuan Province, Southwest China, is described and illustrated. It morphologically resembles G. sinensis, but differs markedly from the latter in having black-purple stripes (vs. purplish-red spots) on the adaxial side of the petals and sepals, a reniform epichile densely covered wi...
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Background: A higher risk for COVID-19 infection and severity for men compared to women has been described since the beginning of the pandemic. The role of androgens has been recently highlighted as they control two key steps of coronavirus infection mediated through the transmembrane protease serin 2 (TMPRRS2) and the angiotensin-converting enzyme...
Article
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RNase MRP is a ribonucleoprotein complex involved in the endoribonucleolytic cleavage of different RNAs. Mutations in the RNA component of the RNP are the cause of cartilage hair hypoplasia. Patients with cartilage hair hypoplasia are characterized by skeletal dysplasia. Biochemical purification of RNase MRP is desired to be able to study its bioch...
Article
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Twenty-two pluriparous single-foetus-bearing Angora goats, housed 3 weeks pre-partum in mid-December, and in transition from pregnancy to lactation were used to test the efficacy of post-partum supplementation (Group S: 11 goats) or not (Group C: 11 goats) with 300 g/head/day of whole field bean seeds (WFBS) to a diet based on mixed hay ad libitum...
Article
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Hair conditions, such as hair loss and graying, are prevalent human conditions. But they are often poorly controlled due to our insufficient understanding of human scalp hair follicle (hsHF) in health and disease. Here we describe a comprehensive single-cell RNA-seq (scRNA-seq) analysis on highly purified black and early-stage graying hsHFs. Based...
Article
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Background The purpose of this paper is to study the dependence of Co levels in hair on Co levels in blood after metal-on-metal (MoM) hip replacement and prove the suitability of hair analysis coupled to blood analysis in the decision process regarding implant revision evaluation. Methods Hair samples of 19 MoM patients having both well-functionin...
Article
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Hair follicle-derived mesenchymal stem cells (HF-MSCs) show considerable therapeutic potential for liver cirrhosis (LC). To improve the effectiveness of naïve HF-MSC treatments on LC, we used bioinformatic tools to identify an exogenous gene targeting HSCs among the differentially expressed genes (DEGs) in LC to modify HF-MSCs. Extracellular matrix...
Article
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Keratinases can specifically degrade keratins, which widely exist in hair, horns, claws and human skin. There is a great interest in developing keratinase to manage keratin waste generated by the poultry industry and reusing keratin products in agriculture, medical treatment and feed industries. Degradation of keratin waste by keratinase is more en...
Article
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There is a dearth of research examining Black adolescents' body image, with even less work examining gender differences or the influence of ethnic-racial identity (ERI) commitment. It is critical to understand how culturally relevant aspects of appearance beyond commonly measured ideals such as thinness and muscularity are particularly relevant to...
Article
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This paper describes a novel electrostatically actuated microgripper with freeform geometries designed by a genetic algorithm. This new semiautomated design methodology is capable of designing near-optimal MEMS devices that are robust to fabrication tolerances. The use of freeform geometries designed by a genetic algorithm significantly improves th...
Article
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Trichotillomania (TTM) and skin-picking disorder (SPD) are two clinically related conditions that can be successfully treated with behavior therapy (BT). There is some research indicating that BT for TTM and SPD can be efficacious also when delivered online instead of face-to-face, however, previous studies have mainly used self-recruited samples i...
Article
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Actin filament polymerization can be branched or linear, which depends on the associated regulatory proteins. Competition for actin monomers occurs between proteins that induce branched or linear actin polymerization. Cell specialization requires the regulation of actin filaments to allow the formation of cell type–specific structures, like cuticul...
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Highlights • Psychosocial interventions may improve HPA axis regulation, but few studies have investigated this in low-income settings. • This study evaluates a perinatal intervention targeted at depressed mothers in rural Pakistan. • The intervention led to a significant reduction in cortisol and cortisone levels in mothers, as well as an increa...
Article
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Flexible polymeric patches find widespread applications in biomedicine because of their biological and tunable features including excellent patient compliance, superior biocompatibility and biodegradation, as well as high loading capability and permeability of drug. Such polymeric patches are classified into microneedles (MNs), hydrogel, microcapsu...
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(EN) Present article is part of a series that was started a few years ago and which highlights the discoveries osseous material artefacts that were recovered from surface researches carried out within Prehistoric sites in Brașov County, identified by Silviu Gridan, some of them are included in the Rupea‒Homorod‒Ungra microregion. With this occasion...
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A rising volume of the literature acknowledges the significance of nanotechnology in the cosmetics industry, particularly with the invention and use of techniques based on niosomes to generate unique formulations with both medicinal and aesthetic benefits. The current study's objectives are to undertake a comprehensive review of the previously publ...
Article
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Recent meta-analyses have shown lower zinc and higher copper levels in the serum of people with schizophrenia than in healthy controls. However, the relationship between trace elements (TEs) and the pathophysiology of psychosis, including schizophrenia, remains unclear due to the antipsychotic effects on mineral levels. In this study, we aimed to d...
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Purpose In early-onset preeclampsia, each additional day of pregnancy prolongation reduces offspring infant mortality about 9%. We evaluated if maternal stress at admission to hospital for early-onset preeclampsia predicted admission-to-delivery intervals in days. Methods This prospective, longitudinal cohort-study involved 15 singleton pregnancie...
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Over the last decade, the usage of hair color is gradually increasing from adolescents to the geriatric population. In the elderly population, more use of hair color due to graying of hairs exposes them to chemicals such as para-phenylenediamine (PPD). Many cases are reported regarding various manifestations of allergic contact dermatitis due to PP...
Article
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Working as a professional hairdresser involves the daily usage of many different hair treatment products containing chemicals in complex mixtures. Exposure may induce symptoms in the airways and on the skin. In this study, exposure of hairdressers to volatile organic compounds (VOCs), including aldehydes, was measured in the personal breathing zone...
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The market demand for marine-based cosmetics has shown a tremendous growth rate in the last decade. Marine resources represent a promising source of novel bioactive compounds for new cosmetic ingredient development. However, concern about sustainability also becomes an issue that should be considered in developing cosmetic ingredients. The fisherie...
Article
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The various coat colorations exhibited in different mammalian groups is an attractive biological phenomenon, and is also one of the excellent models for studying and understanding mammalian adaptive evolution. Coat color polymorphism in mammals plays an important role in avoiding predator, predation, courtship, and protection against UV radiation....
Article
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Febrile seizures (FS) are one of the most common seizure disorders in childhood which are classified into short and prolonged, depending on their duration. Short FS are usually considered as benign. However, epidemiological studies have shown an association between prolonged FS and temporal lobe epilepsy. The development of animal models of FS has...
Article
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Hair loss affects millions of people at some time in their life, and safe and efficient treatments for hair loss are a significant unmet medical need. We report that topical delivery of quercetin (Que) stimulates resting hair follicles to grow with rapid follicular keratinocyte proliferation and replenishes perifollicular microvasculature in mice....
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The discharge of cosmetic wastewater into the wastewater treatment systems has become an environmental concern due to high concentrations of nutrients. The current study explored the phytoremediation potential of Desmodesmus multivariabilis, under mixotrophic growth, to remove total organic carbon (TOC), sulfur (TS), nitrogen (TN), and phosphorus (...
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Increased environmental pollution, urbanization, and a wide variety of anthropogenic ac-23 tivities have led to the release of toxic pollutants into the environment, including heavy metals 24 (HMs). It has been found that increasing concentrations of HMs lead to toxicity, mineral imbalances, 25 serious diseases, which are occurring more and more fr...
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Albinism is a genetic disorder, present worldwide, caused by mutations in genes affecting melanin production or transport in the skin, hair and eyes. To date, mutations in at least 20 different genes have been identified. Oculo-cutaneous Albinism type IV (OCA4) is the most frequent form in Asia but has been reported in all populations, including Eu...
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We study the thermodynamics of accelerating asymptotically anti–de Sitter black holes with scalar hair in four-dimensional Einstein-Maxwell-dilaton theories, which can be embedded in gauged supergravities for specific dilaton coupling constants. These accelerating black holes are described by charged dilaton C metrics, which have unique features bu...
Presentation
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The concept of PRP started in the field of hematology, initially it was used to treat thrombocytopenia. After few years PRP started to be used in maxillofacial surgery as PRF. PRP has also been used in the musculoskeletal field in sports injuries, and other surgeries to promote Wound healing. More recently it is used in Cosmetic dermatology for sk...
Article
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Gastrointestinal obstruction secondary to foreign body bezoars (industrial materials, plastic, tissue paper, sponge) have been reported but foreign body bezoar with styrofoam has never been reported in literature. PICA associated bezoars are an unusual complication and reports say that a wide variety of substances are consumed, ranging from socks,...
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by poetics, this brief ludic essay understands the lack of ethics in the realm of philosophy and social sciences in El Salvador, which deny Native languages in the name of decolonization. Analyzing a single Nahuat word-tzun-, "top, head/hair, extreme", and its complex derivation-it points out how translating anatomical facts into words implies a ju...
Preprint
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We propose a novel nonsingular black-hole spacetime representing a strong deformation of the Schwarzschild solution with mass $M$ by an additional hair $\ell$, which may be hierarchically larger than the Planck scale. Our black-hole model presents a de Sitter core and $\mathcal{O}(\ell^2/r^2)$ slow-decaying corrections to the Schwarzschild solution...
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Paucity of data exists on the timing of puberty, particularly the pubarche, in developing countries, which has hitherto limited the knowledge of the timing of pubarche, and assistance offered by physicians to anxious young people in Nigeria. Factors associated with the timings of puberty and pubarche are not well documented in Nigeria. We hypothesi...
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Hair graying, a prototypical sign of human aging, is a progressive loss of pigmentation from growing hair shafts caused by disease and as a side effect of medications. Cerebrolysin is a neuropeptide preparation that mimics the effect of endogenous neurotrophic factors. Cerebrolysin has been widely used in neurologic conditions, such as cerebral str...
Article
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In a previous study, we observed that the hair color of Japanese females darkens with age and that the causes of this are the increase in melanosome size, the amount of melanin, and the mol% of 5,6-dihydroxyindole (DHI) which has a high absorbance. In this study, we extended the same analyses to male hair to examine the sex differences in hair colo...
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Backgrounds: The rapid and sophisticated development of information and communication technology has brought major changes in aspects of life. People can now do things more easily thanks to technological advances, including trade. Aim: This study aims to determine the effect of religiosity and product quality on purchasing decisions for seasonal cl...
Preprint
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Given the few written documents left behind by those who escaped slavery, the analysis of African agency in the transfer of crops and knowledge in the successful establishment of Maroon communities benefits from other disciplines, such as oral history, ethnobotany and linguistics. Here we report the histories of several enslaved women, who escaped...
Article
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The efficiency of molecular breeding largely depends on inexpensive genotyping arrays. In this study, we aimed to develop an ovine high-resolution multiple-SNP capture array, based on genotyping by target sequencing (GBTS) system with capture-in-solution (liquid chip) technology. All the markers were from 40K captured regions, including genes locat...
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Here we show that intradermal injection of keratin promotes hair growth in mice, which results from extracellular interaction of keratin with hair forming cells. Extracellular application of keratin induces condensation of dermal papilla cells and the generation of a P-cadherin-expressing cell population (hair germ) from outer root sheath cells via...
Article
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Abstract Background Adolescent non-suicidal self-injury (NSSI) is common and adolescence is the most common period of first self-injury, and the occurrence of NSSI is influenced by negative life events and emotional symptoms. The mediating role of emotional symptoms in the interaction between negative life events and NSSI has not been carefully inv...
Article
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Cisplatin is an effective anticancer agent, but also causes permanent hearing loss by damaging hair cells—the sensory receptors essential for hearing. There is an urgent clinical need to protect cochlear hair cells in patients undergoing cisplatin chemotherapy. The zebrafish lateral line organ contains hair cells and has been frequently used in stu...
Preprint
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Adolescent exposure to neurotoxic metals adversely impacts cognitive, motor, and behavioral development. Few studies have addressed the underlying brain mechanisms of these metal-associated developmental outcomes. Furthermore, metal exposure occurs as a mixture, yet previous studies most often consider impacts of each metal individually. In this cr...
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An obvious sign of ageing is the loss of hair colour due to a decrease or lack of melanin in hair fibres. An examination of the lipid levels and structure of grey hair determined using µ–FTIR revealed a high correlation between the characteristics of lipids located in the cuticle and the water dynamics of the fibres. Therefore, a deep study based o...
Article
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The objective of this study was to assess the effects of the dietary level of a condensed tannin-rich forage on linear measures, body condition score (BCS), body mass indexes (BMI), and performance and relationships among these variables in growing dairy goats and hair sheep raised for meat. An experiment with a 2 × 3 factorial treatment arrangemen...
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Background Behavioral interventions hold promise in improving body-focused repetitive behaviors (BFRBs), such as hair pulling and skin picking. The effect of combining different treatment techniques is currently unknown. Methods In the framework of a randomized controlled crossover trial, 334 individuals with at least one BFRB were allocated eithe...
Article
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Zinc and iron, for example, are crucial trace elements for pregnant women's health. This study has been conducted for the evaluation of zinc and ferritin status of pregnant women since these elements have significant effects on health of the pregnant women as well as the growing embryo in Al Muthanna Province/ Iraq. Seventy five samples of this stu...
Article
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The Min pig, a local pig breed in China, has a special trait which has intermittent villus and coat hair regeneration. However, the regulation and mechanism of villus in Min pigs have not yet been described. We observed and described the phenotype of Min pig dermal villi in detail and sequenced the mRNA transcriptome of Min pig hair follicles. A to...
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INTRODUCTION: Androgenetic alopecia, also known as male pattern baldness, is a common dermatological problem. It manifests as hair thinning and miniaturization of hair follicles. In recent years, knowledge of the risk factors and pathomechanisms of this disease has increased, making treatment more effective. Serious consequences of this condition i...
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Leaf characters of 15 Egyptian Bauhinia species and two forms, investigated using both the eye lens and scanning electron microscope. Variations within the leaf shapes are recorded and all obvious morphological characters are subjected to statistical analyses. These analyses were restricted to the characters noticed by the eye lens only. Density, t...
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Childhood health conditions can affect individuals’ future health status, consequently influencing their performance during adulthood in contributing to the nation’s development. Some of the major health problems among many Indonesian children are poor nutrition, diarrhea, and upper respiratory tract infections, in addition to other common problems...
Article
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There are currently efforts to improve strategies for biomimetic approaches, to identify pitfalls and to provide recommendations for a successful biomimetic work flow. In this contribution, a case study of a concrete biomimetic project is described that started with a posed technical problem for which seemingly obvious biological models exist. The...
Article
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The relationship between oxidative stress and skin aging/disorders is well established. Many topical and oral antioxidants (vitamins C and E, carotenoids, polyphenols) have been proposed to protect the skin against the deleterious effect induced by increased reactive oxygen species production, particularly in the context of sun exposure. In this re...
Article
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Altered secretion of cortisol, the primary effector of the hypothalamus–pituitary–adrenal axis, has been proposed as a means by which traumatic experiences compromise later mental health. However, despite the popularity of cortisol as a potential biomarker for stress and adversity, findings are inconsistent, and little is known about the impact of...
Article
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Different hair sheep breeds originated from diverse climatic regions of the USA may show varying adaptability to water deprivation. Therefore, the objective of this study was to assess the effects of restricted availability of drinking water on blood characteristics and constituent concentrations in different breeds of hair sheep from various regio...
Preprint
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Background: Female pattern hair loss (FPHL) is a nonscarring progressive thinning of hair with gradual decrease in it's number , especially in the frontal, central, and parietal scalp. the loss of terminal hairs in affected areas is usually incomplete and the frontal hairline is often spared. It is caused by follicular miniaturization, a process th...
Article
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The latest intrauterine fetal developmental stage and the neonatal period represent the most challenging phases for mammalian offspring. Toward the term of pregnancy, during parturition, and after birth, the hypothalamic–pituitary–adrenal axis (HPA) is a key system regulating several physiologic processes, through the production of cortisol and deh...
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Domestic goats in Iraq are one of the oldest domesticated animals in Mesopotamia. Their adaptation characterizes them to harsh environmental conditions such as heat in the summer and cold in the winter. Still, they suffer from neglect and the lack of genetic research that would improve the production of this animal, which is considered a multi-prod...
Article
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The Video-feedback Intervention to promote Positive Parenting and Sensitive Discipline (VIPP-SD) is effective in increasing parental sensitivity and sensitive discipline, and aims to decrease child behavior problems. Changes in quality of parenting may be accompanied by effects on child stress levels. However, studies of VIPP-SD effects on child be...
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This study determined the effect of replacing ground corn and soybean meal with ground Pouteria sapota kernel (PSSM) in lamb diets on nutrient intake and digestibility, performance, and carcass traits. Twenty-one male hair sheep lambs with an average body weight of 22 ± 3.5 kg were randomly assigned to three treatment diets containing PSSM at 0, 10...
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We report on a cohort of 204 children referred between January 2017 and January 2022 to the German Center for Ectodermal Dysplasias, Erlangen. The most frequent reasons for referral were tooth malformations and lack of multiple teeth leading to the suspicion of an ectodermal dysplasia. Many patients also suffered from being unable to perspire. Nail...