RESUMO
Plant-derived products can assist in the healing process of dermal wounds. It has been demonstrated that Hancornia speciosa latex present angiogenic, osteogenic, anti-inflammatory, and antioxidant activities. Then, it could contribute to the wound healing process. However, natural products in contact with skin may cause dermatitis. The objective of this work was to evaluate the allergic and irritant potential of H. speciosa serum fraction latex using in vitro assays. The obtained results showed that the H. speciosa serum fraction latex has a slightly irritant potential and is not cytotoxic neither allergenic for human cells. Moreover, we identified a remarkable low amount of proteins in this material in comparison to Hevea brasiliensis latex. This result could explain the non-allergenic potential of H. speciosa serum fraction latex because proteins present in latex are the main responsible for allergy. This biomaterial could be used as a non-allergenic source for development of new medicines.
Produtos derivados de plantas podem auxiliar no processo de cicatrização de feridas cutâneas. Foi demonstrado que o látex de Hancornia speciosa apresenta atividades angiogênicas, osteogênicas, antiinflamatórias e antioxidantes. Então, este biomaterial pode contribuir para o processo de cicatrização de feridas. No entanto, produtos naturais em contato com a pele podem causar dermatites. O objetivo deste trabalho foi avaliar o potencial alérgico e irritante do látex da fração soro de H. speciosa por meio de ensaios in vitro. Os resultados obtidos mostraram que o látex da fração do soro de H. speciosa possui um potencial pouco irritante e não é citotóxico nem alergênico para células humanas. Além disso, foi identificado uma notável baixa quantidade de proteínas neste material em comparação ao látex de Hevea brasiliensis. Esse resultado poderia explicar o potencial não alergênico do látex da fração soro de H. speciosa, pois as proteínas presentes no látex são as principais responsáveis pela alergia. Este biomaterial pode ser utilizado como fonte não alergênica para desenvolvimento de novos medicamentos.
Assuntos
Apocynaceae/química , Cicatrização/efeitos dos fármacos , Técnicas In VitroRESUMO
Abstract Plant-derived products can assist in the healing process of dermal wounds. It has been demonstrated that Hancornia speciosa latex present angiogenic, osteogenic, anti-inflammatory, and antioxidant activities. Then, it could contribute to the wound healing process. However, natural products in contact with skin may cause dermatitis. The objective of this work was to evaluate the allergic and irritant potential of H. speciosa serum fraction latex using in vitro assays. The obtained results showed that the H. speciosa serum fraction latex has a slightly irritant potential and is not cytotoxic neither allergenic for human cells. Moreover, we identified a remarkable low amount of proteins in this material in comparison to Hevea brasiliensis latex. This result could explain the non-allergenic potential of H. speciosa serum fraction latex because proteins present in latex are the main responsible for allergy. This biomaterial could be used as a non-allergenic source for development of new medicines.
Resumo Produtos derivados de plantas podem auxiliar no processo de cicatrização de feridas cutâneas. Foi demonstrado que o látex de Hancornia speciosa apresenta atividades angiogênicas, osteogênicas, antiinflamatórias e antioxidantes. Então, este biomaterial pode contribuir para o processo de cicatrização de feridas. No entanto, produtos naturais em contato com a pele podem causar dermatites. O objetivo deste trabalho foi avaliar o potencial alérgico e irritante do látex da fração soro de H. speciosa por meio de ensaios in vitro. Os resultados obtidos mostraram que o látex da fração do soro de H. speciosa possui um potencial pouco irritante e não é citotóxico nem alergênico para células humanas. Além disso, foi identificado uma notável baixa quantidade de proteínas neste material em comparação ao látex de Hevea brasiliensis. Esse resultado poderia explicar o potencial não alergênico do látex da fração soro de H. speciosa, pois as proteínas presentes no látex são as principais responsáveis pela alergia. Este biomaterial pode ser utilizado como fonte não alergênica para desenvolvimento de novos medicamentos.
RESUMO
Plant-derived products can assist in the healing process of dermal wounds. It has been demonstrated that Hancornia speciosa latex present angiogenic, osteogenic, anti-inflammatory, and antioxidant activities. Then, it could contribute to the wound healing process. However, natural products in contact with skin may cause dermatitis. The objective of this work was to evaluate the allergic and irritant potential of H. speciosa serum fraction latex using in vitro assays. The obtained results showed that the H. speciosa serum fraction latex has a slightly irritant potential and is not cytotoxic neither allergenic for human cells. Moreover, we identified a remarkable low amount of proteins in this material in comparison to Hevea brasiliensis latex. This result could explain the non-allergenic potential of H. speciosa serum fraction latex because proteins present in latex are the main responsible for allergy. This biomaterial could be used as a non-allergenic source for development of new medicines.(AU)
Produtos derivados de plantas podem auxiliar no processo de cicatrização de feridas cutâneas. Foi demonstrado que o látex de Hancornia speciosa apresenta atividades angiogênicas, osteogênicas, antiinflamatórias e antioxidantes. Então, este biomaterial pode contribuir para o processo de cicatrização de feridas. No entanto, produtos naturais em contato com a pele podem causar dermatites. O objetivo deste trabalho foi avaliar o potencial alérgico e irritante do látex da fração soro de H. speciosa por meio de ensaios in vitro. Os resultados obtidos mostraram que o látex da fração do soro de H. speciosa possui um potencial pouco irritante e não é citotóxico nem alergênico para células humanas. Além disso, foi identificado uma notável baixa quantidade de proteínas neste material em comparação ao látex de Hevea brasiliensis. Esse resultado poderia explicar o potencial não alergênico do látex da fração soro de H. speciosa, pois as proteínas presentes no látex são as principais responsáveis pela alergia. Este biomaterial pode ser utilizado como fonte não alergênica para desenvolvimento de novos medicamentos.(AU)
Assuntos
Cicatrização/efeitos dos fármacos , Apocynaceae/química , Técnicas In VitroRESUMO
Abstract Plant-derived products can assist in the healing process of dermal wounds. It has been demonstrated that Hancornia speciosa latex present angiogenic, osteogenic, anti-inflammatory, and antioxidant activities. Then, it could contribute to the wound healing process. However, natural products in contact with skin may cause dermatitis. The objective of this work was to evaluate the allergic and irritant potential of H. speciosa serum fraction latex using in vitro assays. The obtained results showed that the H. speciosa serum fraction latex has a slightly irritant potential and is not cytotoxic neither allergenic for human cells. Moreover, we identified a remarkable low amount of proteins in this material in comparison to Hevea brasiliensis latex. This result could explain the non-allergenic potential of H. speciosa serum fraction latex because proteins present in latex are the main responsible for allergy. This biomaterial could be used as a non-allergenic source for development of new medicines.
Resumo Produtos derivados de plantas podem auxiliar no processo de cicatrização de feridas cutâneas. Foi demonstrado que o látex de Hancornia speciosa apresenta atividades angiogênicas, osteogênicas, antiinflamatórias e antioxidantes. Então, este biomaterial pode contribuir para o processo de cicatrização de feridas. No entanto, produtos naturais em contato com a pele podem causar dermatites. O objetivo deste trabalho foi avaliar o potencial alérgico e irritante do látex da fração soro de H. speciosa por meio de ensaios in vitro. Os resultados obtidos mostraram que o látex da fração do soro de H. speciosa possui um potencial pouco irritante e não é citotóxico nem alergênico para células humanas. Além disso, foi identificado uma notável baixa quantidade de proteínas neste material em comparação ao látex de Hevea brasiliensis. Esse resultado poderia explicar o potencial não alergênico do látex da fração soro de H. speciosa, pois as proteínas presentes no látex são as principais responsáveis pela alergia. Este biomaterial pode ser utilizado como fonte não alergênica para desenvolvimento de novos medicamentos.
Assuntos
Humanos , Apocynaceae , Hevea , Cicatrização , Materiais Biocompatíveis , Alérgenos , LátexRESUMO
Contact dermatitis is a very common inflammatory reaction in the skin, causing not only aesthetic problems but also loss functionality at work. The molecular mechanisms of contact dermatitis induced by chemical irritants are still unclear. Considering that transient receptor potential channels (TRP) may induce neurogenic inflammation and the exacerbation of inflammatory responses, here we investigated the role of transient receptor potential channel ankyrin type-1 (TRPA1) in skin inflammation evoked by chemical irritants. Ear oedema and nociceptive responses elicited by the topical application of xylene and toluene were measured in Swiss mice, wild type and TRPA1 knockout (Trpa1-/-) C57BL/6 mice. Histological analyses were performed in mice subjected to the ear oedema assay. Topical application of xylene and toluene in the mouse ear induced an edematogenic response (0.113⯱â¯0.008â¯mm and 0.067⯱â¯0.011â¯mm), compared to vehicle (0.008⯱â¯0.008â¯mm), assessed by ear thickness measurements and histological analyses. These responses were prevented by topical pretreatment with a selective TRPA1 antagonist, HC-030031 (% inhibition: xylene 36.8⯱â¯9.4% and toluene 50.7⯱â¯11.0%), and by the genetic deletion of TRPA1 ((% inhibition: xylene 66.6⯱â¯16.7% and toluene 75⯱â¯0%). In addition, the topical application of xylene and toluene to the mouse paw elicited nociceptive responses, which were significantly reduced by oral treatment with HC-030031 ((% of inhibition: 84.9⯱â¯1.3% and 27.1⯱â¯8.0%, respectively); nociceptive responses were almost completely abolished in Trpa1-/-mice. Our data suggest that the activation of TRPA1 could be involved in some of the symptoms of irritant-mediated contact dermatitis, such as oedema, pain and neurogenic inflammation.
Assuntos
Pele/efeitos dos fármacos , Canal de Cátion TRPA1/metabolismo , Tolueno/farmacologia , Xilenos/farmacologia , Animais , Edema/induzido quimicamente , Edema/genética , Edema/metabolismo , Edema/patologia , Técnicas de Inativação de Genes , Inflamação/induzido quimicamente , Inflamação/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Nociceptividade/efeitos dos fármacos , Canal de Cátion TRPA1/antagonistas & inibidores , Canal de Cátion TRPA1/deficiência , Canal de Cátion TRPA1/genética , VolatilizaçãoRESUMO
La dermatitis palpebral constituye un proceso inflamatorio frecuente, ya que la piel que recubre los párpados es especialmente susceptible a la acción de agentes irritantes y alergénicos. La piel de ésta región es cuatro veces más fina que en el resto de la cara, lo que facilita la aparición de edema en caso de inflamación. Otros factores que influyen son la función anormal de la barrera cutánea que puede promover el desarrollo de la sensibilización, y el fácil acceso de numerosos alergenos a dicha zona, los que pueden llegar por contacto directo con las manos, por vía aerotransportada y en menor medida por aproximación. Son múltiples las causas que pueden originar dermatitis palpebral, tanto puramente dermatológicas como sistémicas, siendo en algunas ocasiones multifactorial. De todas ellas la más frecuente es la dermatitis alérgica por contacto, y en menor medida la dermatitis atópica y dermatitis irritativa por contacto También pueden verse comprometidos con un estado inflamatorio crónico los bordes palpebrales, lo que se denomina blefaritis. Los pacientes pueden referir dolor, ardor, prurito y sensación de cuerpo extraño. En ocasiones, debido a la variedad de patologías que pueden producir dermatitis palpebral, el diagnóstico diferencial suele ser difícil de realizar. Es importante conocer el factor causal para poder realizar un tratamiento adecuado, ya que al ser un trastorno por lo general persistente, los pacientes a menudo se someten a terapias inadecuadas, sin obtener la curación del cuadro.
Palpebral dermatitis is a frequent inflammatory process, since the skin covering the eyelids is especially susceptible to the action of irritants and allergens. The skin of this region is four times thinner than in the rest of the face, which facilitates the appearance of edema in case of inflammation. Other factors that influence are the abnormal function of the cutaneous barrier that can promote the development of sensitization, and the easy access of numerous allergens to this area, which can come by direct contact with the hands, by airborne and to a lesser extent by approximation. There are many causes that can cause palpebral dermatitis, both purely dermatological and systemic, being sometimes multifactorial. Of all of them, the most frequent is allergic contact dermatitis, and to a lesser extent, atopic dermatitis and irritant contact dermatitis. The palpebral borders can also be compromised with a chronic inflammatory state, which is called blepharitis. Patients may report pain, burning, pruritus and foreign body sensation. Occasionally, due to the variety of pathologies that can produce palpebral dermatitis, the differential diagnosis is usually difficult to perform. It is important to know the causal factor to be able to perform an adequate treatment, since being a generally persistent disorder, patients often undergo inadequate therapies, without obtaining the cure of the pathology.
RESUMO
Hand hygiene (HH) is the single most important procedure health care workers (HCWs) can follow to reduce the risk of spreading health care-associated infections, yet compliance with this simple task remains at less than 50%. One of the reasons often cited for noncompliance is irritant contact dermatitis (ICD) resulting from repeated exposure to HH products and procedure. This literature review used the World Health Organization's components of empowerment as a guideline for the search and development of a clinical model to address HCW HH and ICD.
Assuntos
Infecção Hospitalar/prevenção & controle , Dermatite Irritante/prevenção & controle , Fidelidade a Diretrizes/estatística & dados numéricos , Higiene das Mãos/métodos , Conhecimentos, Atitudes e Prática em Saúde , Controle de Infecções/métodos , Dermatite Irritante/epidemiologia , Desinfecção das Mãos , Higiene das Mãos/normas , Pessoal de Saúde/estatística & dados numéricos , Política de Saúde , Humanos , Controle de Infecções/normas , Pele/microbiologia , Organização Mundial da SaúdeRESUMO
Comunicamos un caso de dermatitis por contacto severa debida al Árnica montana, en una paciente con antecedentes de hipertensión arterial tratada regularmente y controlada; se enfatiza la importancia de un control evolutivo, examen físico semiológico completo y los diagnósticos diferenciales, de estas variantes severas e infrecuentes.
The presentation of a case of irritant contact dermatitis in a patient with a history of high blood pressure regularly treated and controlled, who starts on 19.04.13 with fever of 39º5 which ceded with use of current antipyretic; accompanied by myalgia, retro-ocular pain, arthralgias, headache of strong intensity, complete haematology reports thrombocytopenia and leukocytosis at the expense of segmented, picture that remained for 48 hours; later is associated with stabbing pain and right lower limb rigidity. 22.04.13 presents increase in volume and signs of phlogosis of elevated erythematous edges that extends to the sural region, with blister on right twin region of approximately 10x10 cm with functional limitation of that member. The patient is hospitalized under the diagnosis of Bullous erysipelas, receives broad spectrum antibiotics to Gram +, Gram - and anaerobic. 29.04.13 blister hatches draining not foul-smelling yellowish secretion; it is cultivated and Gram, reporting no bacterial growth. Refers to Central Hospital of Maracay entering it with the diagnosis of cellulitis blistering, where it performed second Gram and cultivation reported without bacterial growth; they perform a biopsy which reports epidermal necrotic dermatitis superficial and deep compatible with dermatitis irritant contact. The case is reevaluated, interrogating again to the patient and the dermal symptoms coincide with the use of Árnica montana product (this data was not reported or questioned in the initial history). Update about the product reported that exists extensive reference on cases of dermatitis contact, mainly by the use of Árnica montana and one of its components; methylparaben, these cases have been reported by prolonged use of the product described as excited skin syndrome or angry back. The patient after to the second questioned referred the use of this product frequently for several years topically and even concerned using infusions of the flower of Árnica montana orally. It was decided to deal with steroids intravenously, resulting in evident improvement with egress to the fifth day and outpatient follow-up, which reported complete remission of picture.
RESUMO
Comunicamos un caso de dermatitis por contacto severa debida al Arnica montana, en una paciente con antecedentes de hipertensión arterial tratada regularmente y controlada; se enfatiza la importancia de un control evolutivo, examen físico semiológico completo y los diagnósticos diferenciales, de estas variantes severas e infrecuentes.(AU)
The presentation of a case of irritant contact dermatitis in a patient with a history of high blood pressure regularly treated and controlled, who starts on 19.04.13 with fever of 39º5 which ceded with use of current antipyretic; accompanied by myalgia, retro-ocular pain, arthralgias, headache of strong intensity, complete haematology reports thrombocytopenia and leukocytosis at the expense of segmented, picture that remained for 48 hours; later is associated with stabbing pain and right lower limb rigidity. 22.04.13 presents increase in volume and signs of phlogosis of elevated erythematous edges that extends to the sural region, with blister on right twin region of approximately 10x10 cm with functional limitation of that member. The patient is hospitalized under the diagnosis of Bullous erysipelas, receives broad spectrum antibiotics to Gram +, Gram - and anaerobic. 29.04.13 blister hatches draining not foul-smelling yellowish secretion; it is cultivated and Gram, reporting no bacterial growth. Refers to Central Hospital of Maracay entering it with the diagnosis of cellulitis blistering, where it performed second Gram and cultivation reported without bacterial growth; they perform a biopsy which reports epidermal necrotic dermatitis superficial and deep compatible with dermatitis irritant contact. The case is reevaluated, interrogating again to the patient and the dermal symptoms coincide with the use of Arnica montana product (this data was not reported or questioned in the initial history). Update about the product reported that exists extensive reference on cases of dermatitis contact, mainly by the use of Arnica montana and one of its components; methylparaben, these cases have been reported by prolonged use of the product described as excited skin syndrome or angry back. The patient after to the second questioned referred the use of this product frequently for several years topically and even concerned using infusions of the flower of Arnica montana orally. It was decided to deal with steroids intravenously, resulting in evident improvement with egress to the fifth day and outpatient follow-up, which reported complete remission of picture.(AU)
RESUMO
La dermatitis de contacto (DC) es una respuesta inflamatoria de la piel, como resultado del contacto de la misma con múltiples factores externos, frecuentemente contenidos en cosméticos. Las pruebas del parche son el pilar diagnostico. Se evaluó la prevalencia de la dermatitis alérgica de contacto por cosméticos, determinando las relaciones epidemiológicas como: edad, sexo, localización, ocupación y sensibilización. El 70% de los pacientes estudiados fueron DAC y el 30% fuerondermatitis irritativas por contacto (DIC). El 57% de las dermatitis alérgicas estaban asociadas a cosméticos,predominando en el sexo femenino.
Contact dermatitis (AD) is an inflammatory response of the skinas a result of contact with multiple external factors, often containedin cosmetics. Patch tests are the diagnostic pillar. Prevalence of allergic contact dermatitis to cosmetics was evaluatedby determining the epidemiological relationships as age, sex, location, occupation and awareness.70% of the patients studied were DAC and 30% were irritant contact dermatitis (ICD).57% of allergic dermatitis were associated with cosmetics, predominantly in females.