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1.
Int. j. morphol ; 38(1): 96-100, Feb. 2020. tab, graf
Article in English | LILACS | ID: biblio-1056404

ABSTRACT

During aging, usually graying of the hair occurs as a result of oxidative stress. Driven by social acceptance and self-perception of the exterior appearance, both men and women rely on hair dyeing products, in order to mask the graying hair. At the same time, a frequent use of synthetic products and treatment can damage the hair shaft; for this reason, this study aimed to evaluate the morphological effect of the herbal dye derived from Lawsonia inermis (henna), on hair. Dyed hairs were evaluated by means of SEM. Subsequently, they were compared, qualitatively and quantitatively, with undyed hairs. Results showed a positive impact on the cuticula pattern and on the diameters of the examined samples, after henna application. Different results, about the degree and the type of morphological changes occurring on pigmented hairs, may depend on the phenotype and on the health condition of hair, before dye treatment.


Durante el envejecimiento, generalmente se produce el envejecimiento del cabello como resultado del estrés oxidativo. Motivados por la aceptación social y la autopercepción de la apariencia, tanto hombres como mujeres confían en productos para teñir el cabello para enmascarar las canas. Al mismo tiempo, el uso frecuente de productos y tratamientos sintéticos puede dañar el tallo del cabello. Por esta razón, este estudio tuvo como objetivo evaluar el efecto morfológico del tinte derivado de Lawsonia inermis (henna) en el cabello. Los cabellos teñidos se evaluaron mediante SEM. Posteriormente, se compararon, cualitativa y cuantitativamente, con cabellos sin teñir. Los resultados mostraron un impacto positivo en el patrón de la cutícula y en los diámetros de las muestras examinadas, después de la aplicación de henna. Los diferentes resultados, sobre el grado y el tipo de cambios morfológicos que ocurren en los cabellos pigmentados, pueden depender del fenotipo y del estado de salud del cabello, antes del tratamiento con tinte.


Subject(s)
Humans , Microscopy, Electron, Scanning , Hair Follicle/drug effects , Lawsonia Plant , Hair Dyes/pharmacology , Hair Follicle/ultrastructure , Hair/drug effects , Hair/ultrastructure
2.
São Paulo; s.n; s.n; 2019. 101 p. graf, ilus.
Thesis in Portuguese | LILACS | ID: biblio-996985

ABSTRACT

Os produtos para alisamento das fibras capilares são amplamente utilizados no Brasil principalmente, pelo público feminino. Porém, estes procedimentos podem causar danos ao cabelo do usuário e, também, para o profissional que está atuando. Os alisantes químicos podem ser divididos em dois grupos: alcalinos e ácidos. Os primeiros (tioglicolato de amônio e os hidróxidos de sódio ou guanidina) apresentam valor de pH elevado (superior a 9,0) e alisam por meio da quebra e reorganização das pontes de dissulfeto (S-S) presentes na queratina, proteína estrutural da fibra capilar. Os alisantes ácidos como o formaldeído, ácido glioxílico e seus associados, possuem pH baixo (≥ 2,0) e causam uma reorganização no interior da fibra e geralmente leva a formação de um filme na superfície do fio. O ácido glioxílico associado à carbocisteína e aminoácidos (nomenclatura INCI -International Nomenclature of Cosmetic Ingredient apresentada entre parênteses) (Glyoxyloyl Carbocysteine (and) Glyoxyloyl Keratin Aminoacids (and) Water) é o único ingrediente permitido ao uso como alisante ácido até o momento. O objetivo deste trabalho foi estudar o efeito deste alisante ácido incorporado em uma emulsão óleo e água (O/A) com valores de pH 1,0 e 2,0 (com reaplicações); e o impacto que podem causar nas propriedades mecânicas e químicas da fibra capilar, como força de ruptura, coloração, elasticidade e teor de triptofano da fibra capilar. E também o efeito da radiação ultravioleta nos fios alisados. Nos testes realizados observou-se que as mechas tratadas com a emulsão a pH 1,0 obtiveram melhor resultado de alinhamento das cutículas e capacidade alisante da fibra, com penteabilidade superior ao cabelo virgem (59,4 %), enquanto as mechas com a formulação pH 2,0 foi apenas 33,0%. Entretanto, a força de tração para a ruptura do fio foi inferior, diminuindo em 16,0% (pH 1,0) e 9,0 % (pH 2,0). Quanto a variação da coloração, a variação do tom de cor foi mais exacerbada para as mechas tratadas com a formulação em pH 1,0. O teor de triptofano foi inferior nas mechas alisadas com a formulação pH 1,0. Para o teste de DSC e Raman, ambas as mechas tratadas apresentaram modificações nas suas estruturas. As fibras alisadas e expostas à radiação UV apresentaram danos maiores nas cutículas, e certa proteção na degradação de proteínas em relação aquelas sem tratamento e irradiadas ao UV. Considerando as reaplicações do produto alisante ácido, quanto maior o número de aplicações, mais alinhadas e seladas tornaram se as fibras, mas mais rígida e suscetível à quebra ficaram. Devemos considerar a importância do valor do pH da formulação no impacto do alisamento e dano da fibra capilar


Hair straightening products are widely used in Brazil by the female public. However, these procedures can cause damage to the hair shaft and to professional´s and client´s health. Chemical straighteners can be divided into two groups: alkaline and acid. Alkaline straighteners has a very high pH value (> 9.0) and the straightening process is due to the break followed by reorganization of the disulfide bridges (S-S) present in the keratin, a structural protein of the hair shaft. Some examples of alkaline straighteners are ammonium thioglycolate and sodium or guanidine hydroxides. On the other hand, acid straighteners like formaldehyde, glyoxylic acid, and their associated, present a low pH value (≥ 2.0), which causes a rearranging within the fiber, and sometimes creates a film on the surface of the hair. Nowadays, the glyoxylic acid associated with carbocysteine and amino acids (INCI - International Nomenclature of Cosmetic Ingredient nomenclature presented in parentheses) (Glyoxyloyl Carbocysteine (and) Glyoxyloyl Keratin Aminoacids (and) Water) is the only acid straightener permitted. Therefore, the objective of this work is to study the effect of this acid straightener, incorporated into oil in water (o/w) base emulsions at two different pH values 1.0 and 2.0 ( with reapplication) on the mechanical and physicochemical properties of the hair shaft. Also, the impact of UV radiation in straightened tresses. In the experiments conducted, it was possible to observe that tresses treated with the emulsion at pH 1.0 had a better result on the alignment and the straightening capacity, improving the combing test (59.4%/), while the tresses with the formulation at pH 2.0, 33.0%. However, the tensile strength, to pH 1.0 decreased by 16.0% and to pH 2.0 only 9.0%. As for color, the difference when compared with virgin hair it was major at pH 1.0. The tryptophan content also was lower in tresses treated at pH 1, 0. For the DSC and Raman analyzes all the treated tresses presented modifications in their structure. Straightened strands exposed to radiation had major damage in the cuticles, and some protection in proteins degradation compared to untreated tresses exposed to radiation. Considering the reapplications of the straightening product, as higher the number of applications more aligned and sealed it becomes, however the hair fiber becomes stiffer and susceptible to breakage. Thats why we should consider the importance of the pH value in the product, and the impact of straightening and damage of the hai fiber


Subject(s)
Scalp/injuries , Hair Preparations/adverse effects , Hair/drug effects , Hair Diseases/classification
3.
Indian J Dermatol Venereol Leprol ; 2013 May-Jun; 79(3): 408-417
Article in English | IMSEAR | ID: sea-147476

ABSTRACT

Background: Intralesional corticosteroids are the treatment of choice for adults with less than 50% of scalp area involvement with alopecia areata. The sensitivity of picking up clinical response to treatment by clinical examination is very variable and has inter individual variation. Aims: To evaluate the efficacy of intralesional triamcinolone acetonide in the treatment of alopecia areata and to use dermoscopy to identify signs of early clinical response and adverse effects. Methods: Seventy patches in 60 patients were injected with steroid at 4 weeks interval and followed up for 24 weeks. Treatment response was evaluated using regrowth scale (RGS). Heine DELTA 20; dermatoscope was used to assess disease activity, response to treatment and side effects. Results: Twenty eight patients responded early and achieved RGS of 4 within 12 weeks and 29 patients responded late and achieved RGS of 4 within 24 weeks of initiating therapy. There were 3 patients who did not achieve RGS of 4 at 24 weeks. Late and incomplete responders showed statistically significant association with family history of alopecia areata (p < 0.0001), presence of recurrent disease (p = 0.0147) and presence of nail changes (p = 0.0007). Dermoscopically, 60 patches demonstrated regrowth of new vellus hair at 4 weeks. Tapering hair disappeared maximally at 4 weeks. At 12 weeks, complete disappearance was seen in tapering hairs, broken hairs and black dots whereas for yellow dots to disappear completely in all patches it took 16 weeks. The adverse effects were observed at an earlier stage using dermoscopy than clinically. Conclusion: Intralesional triamcinolone acetonide is efficacious for treatment of localized patchy alopecia areata. Dermoscopy is very useful to identify signs of early clinical response, adverse effects and markers of disease activity.


Subject(s)
Adolescent , Adult , Alopecia Areata/drug therapy , Alopecia Areata/pathology , Dermoscopy , Drug Monitoring/methods , Female , Follow-Up Studies , Glucocorticoids/administration & dosage , Glucocorticoids/adverse effects , Hair/drug effects , Hair/pathology , Humans , Injections, Intralesional , Male , Scalp/drug effects , Scalp/pathology , Treatment Outcome , Triamcinolone Acetonide/administration & dosage , Triamcinolone Acetonide/adverse effects , Young Adult
4.
Arab Journal of Pharmaceutical Sciences. 2007; 3 (4): 65-76
in English, Arabic | IMEMR | ID: emr-94042

ABSTRACT

Clinical trials were performed on a sample of twenty-six Yemenis with myopia to study the effect of antimony eye definer [painter] on vision and intraocular pressure [IOP]. In the first trial each patient applied traditional eye definer containing lead daily for three months, in the second trial each patient applied antimony eye definer daily for three months. Vision parameters including the IOP were measured before and after each trial, and a washout period of one month was kept between the two trials. The results showed that antimony eye definer did not change the power of spherical lenses in both eyes, while it significantly improved the power of cylindrical lenses by 20% in the right eye and 23% in the left eye. Moreover it lowered the IOP by 9% in both eyes, these results were statistically significant. The traditional eye definer containing lead did not change these parameters in the patients. Another trials were formed to the study the effect of antimony ointment 5% on human scalp hair growth, in another sample of healthy volunteers, the results revealed that this ointment has stimulated hair growth by 56%, while the standard trichogenic agent minoxidil 5% solution improved hair growth by 62%. In rabbits the effects were more dramatic, where antimony cream stimulates hair growth by 97%, while the standard trichogenic agent minoxidil 5% solution improved hair growth by 78%. Finally antimony did not show antibacterial effects when tested on streptococci [gram+ve] and E coli [gram-ve]


Subject(s)
Humans , Antimony/pharmacology , Intraocular Pressure/drug effects , Hair/growth & development , Hair/drug effects , Vision, Ocular/drug effects
5.
Saudi Medical Journal. 2006; 27 (5): 717-720
in English | IMEMR | ID: emr-80785

ABSTRACT

Intravenous pulse corticosteroids is an alternative method of corticosteroids delivery, which proved to be safe with rapid and potent efficacy. It is an effective treatment of alopecia areata, but not for the totalis, universalis or ophiasis types, for which no effective therapy is available yet. Recently, it has been confirmed that oral and intravenous pulse methylprednisolone MP have comparable efficacy. Here, we report a 9-year-old Saudi boy with alopecia universalis who was treated with MP sodium succinate 15 mg/kg ideal body weight orally for 3 consecutive days bimonthly for 12 sessions. Complete hair regrowth was obtained without toxic effects. When the interval was increased to 4 weeks, he showed partial relapse. So, 2 more pulses were given with an interval of 3 weeks in between. This maintained his regrown hair for a year without treatment


Subject(s)
Humans , Male , Pulse Therapy, Drug , Hair/drug effects , Methylprednisolone/administration & dosage , Treatment Outcome
6.
Asian Pac J Allergy Immunol ; 1999 Mar; 17(1): 59-62
Article in English | IMSEAR | ID: sea-36981

ABSTRACT

Common variable immune deficiency (CVID) is associated with a variety of autoimmune diseases. Alopecia universalis (AU), believed to have an autoimmune basis, has been found in 1.6% of patients with CVID. Intravenous immunoglobulin (IVIG) therapy is used in various immunodeficiency disorders including CVID, and benefit has been shown in the therapy of autoimmune diseases. We report a patient with CVID and AU treated with IVIG who experienced significant hair regrowth. An 8-year-old girl with CVID and AU was treated with IVIG 400 mg/kg every 4 weeks. Since her second dose of IVIG, regrowth of eyelashes, eyebrows, body and scalp hair was observed in this patient. At present, about 1 year treat-meant of IVIG, significant hair regrowth is noted with 5-6 cm of scalp hair. We believe that IVIG may be beneficial in the treatment of AU, at least in patients with CVID.


Subject(s)
Alopecia/complications , Child , Common Variable Immunodeficiency/complications , Female , Hair/drug effects , Humans , Immunoglobulins, Intravenous/therapeutic use , Treatment Outcome
7.
Rev. Salusvita (Impr.) ; 18(1): 37-52, 1999. tab
Article in Portuguese | LILACS | ID: lil-277285

ABSTRACT

Informam-se as distribuiçöes de frequência de contaminaçäo pelo mercúrio em comunidades indigenas e garimpeiras adstritas a sítios de exploraçäo às margens do Rio Fresco, no sul do Estado do Pará, em duas reservas dos Kayapó, grupo linguístico Gê: a dos Gorotire e a dos Djudjek-tire. Do total de dosimetrias processadas em unidade laboratorial móvel na área, por método analítico de determinaçäo baseado na transformaçäo rápida por espectrofotometria de absorçäo atômica em cabelo, urina e sangue, mais amplamente em 625 unidades observacionais alocadas randonicamente, relatam-se os valores encontrados em 345 pessoas. Os resultados säo bastante numerosos, mas em essência, indicam, tanto no plano descritivo quanto analítico, que : a) os três grupos estudados säo predominantemente jovens; b) a contaminaçäo pelo mercúrio atinge a extensa maioria dos garimpeiros e a integralidade dos índios, com valores mais elevados, em ambas as aldeias, nos mais idosos; c) há predomínio, na decomposiçäo das dositometrias mais elevadas de cabelo, de mercúrio orgânico entre os índios e de inorgânico entre os garimpeiros; d) nestes, as medidas de tempo de garimpo, de queima e número de malárias säo elevadas e correlacionadas; e) os valores urinários elelvados, contrariamente ao observado nas outras matrizez, estäo mais presentes em garimpeiros que nos índios; f) entre estes, os mais idosos apresentam as dositometrias mais elevadas na urina e no sangue; g) em garimpeiros, maiores valores do metal na urina estäo correlacionados a maiores valores no cabelo. Distribuindo-se tais informaçöes, busca-se dimensionar seu impacto e significado sobre as realidades estudadas.


Subject(s)
Humans , Environmental Exposure , Occupational Exposure , Indians, South American , Mercury Poisoning , Brazil , Dosimetry , Hair/drug effects , Mercury Poisoning/blood , Mercury Poisoning/urine
9.
Dermatol. venez ; 29(3): 110-3, 1991. tab
Article in Spanish | LILACS | ID: lil-137138

ABSTRACT

El folículo piloso es la estructura fundamental para la producción del pelo, pudiéndose alterar por diversas causas. Las drogas son capaces de estimular o inhibir el crecimiento del pelo, o de alterar el rizado y textura del mismo. Se revisarán algunos de los efectos de drogas sobre el crecimiento y caracter del pelo


Subject(s)
Humans , Drug Therapy/adverse effects , Hair/drug effects , Hair/growth & development , Pharmaceutical Preparations/adverse effects
10.
Lamaräo do Passé; s.n; dez. 1989. 78 p. ilus, tab.
Thesis in Portuguese | LILACS | ID: lil-147294

ABSTRACT

Foram desenvolvidos dois estudos de prevalência, em 1982 e 1986, objetivando-se avaliar o processo de concentraçäo de Arsênico nos cabelos de 84 mulheres residentes em Lamaräo do Passé, localidade situada a 4 Km de uma metalurgica de cobre (Caraiba Metais). Através da técnica de espectrofotometria de absorçäo atómica, detectou-se uma média de aumento de 11.0 vezes dos níveis de Arsênico nos cabelos das mulheres estudadas. Näo houve correlaçäo entre a concentraçäo do metal e as variáveis epidemiológicas investigadas (características biológicas, sócio-econômicas e hábitos pessoais). A exposiçäo ambiental ao Arsênico, por parte da populaçäo de Lamaräo do Passé, é decorrente da proximidade da Caraíba Metais, sendo de sua responsabilidade a adoçäo de medidas preventivas para impedí-la e, com isso, evitarem-se sérias consequências para a saúde dos residentes do local. Nesse sentido, säo imprescindíveis uma atuaçäo eficaz do Centro de Recursos Ambientais e a participaçäo de segmentos organizados da sociedade civil, no processo de mudança do quadro observado. É necessário que outros estudos epidemiológicos sejam realizados, para acompanhamento da saúde dos moradores de Lamaräo do Passé


Subject(s)
Humans , Female , Adult , Arsenic , Cross-Sectional Studies , Occupational Diseases/prevention & control , Environmental Exposure , Spectrophotometry, Atomic , Hair/drug effects , Permissible Limit of Occupational Hazards , Brazil , Data Interpretation, Statistical , Environmental Exposure , Environmental Monitoring/standards , Health Surveys , Metallurgy , Community Participation
11.
Acta physiol. pharmacol. latinoam ; 38(3): 267-74, 1988. tab
Article in English | LILACS | ID: lil-86926

ABSTRACT

Las acciones del fenilpropionato y decanoato de nandrolona, androstalona y propionato de testosterona, en dosis diarias de 3 a 100 microng durante um mes, sobre la onda difusa de pelo que aparece inmediatamente después de la gonadectomía, fueron estudiadas en ratones C 57 machos. La acción androgénica sobre el peso del lóbulo anterior de la próstata y las acciones anabólicas sobre el peso del músculo elevador del ano y de las glándulas submaxilares fueron también evaluadas. Los esteroides anabólicos mencionados tienen una fuerte acción inhibitoria sobre el avance de las ondas pilosas, mayor que la del propionato de testosterona


Subject(s)
Rats , Animals , Male , Anabolic Agents/pharmacology , Hair/growth & development , Hair/drug effects , Muscles/anatomy & histology , Orchiectomy , Organ Size/drug effects , Prostate/anatomy & histology , Submandibular Gland
12.
Arq. neuropsiquiatr ; 44(1): 78-81, mar. 1986.
Article in Portuguese | LILACS | ID: lil-33687

ABSTRACT

A literatura registra a ocorrência de ganho de peso em menos de 20% dos pacientes que recebem ácido valpróico e alteraçöes na textura de fâneros em até 9%. Relata-se o caso de uma paciente de 19 anos que desenvolveu ganho de 13 kg, perda parcial de cabelos seguida de transformaçäo deles de lisos e claros em cacheados e mais escuros, durante tratamento com 1000 mg de ácido valpróico ao dia, com nível sérico de 138,9 micron g/ml. Após diminuiçäo da dose para 500 mg ao dia, com nível sérico de 80,5 micron g/ml, ela perdeu 7 kg, porém näo recuperou a antiga textura dos cabelos. Devido ao completo controle de suas crises de ausência, mioclônicas e tônico-clônicas, jamais obtido com outra medicaçäo, a paciente escolheu manter tratamento com ácido valpróico


Subject(s)
Adult , Humans , Female , Body Weight/drug effects , Hair/drug effects , Valproic Acid/adverse effects , Epilepsy/drug therapy , Valproic Acid/blood , Valproic Acid/therapeutic use
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