Avaliação in vitro do potencial reparador de matriz de Quitosana associada a Madecassoside: aplicações no tratamento de lesões cutâneas / In vitro evaluation of the matrix repairing potential of Chitosan associated with Madecassoside: applications in the treatment of skin lesions

A cicatrização de úlceras cutâneas depende de fatores-chave que incluem a interação adequada dos diferentes constituintes celulares da epiderme, derme e tecido subcutâneo. A restauração da barreira epidérmica é altamente eficiente durante o período embrionário, com um relativo decréscimo na vida adulta. Distúrbios sistêmicos, como diabetes e hanseníase, podem comprometer a capacidade de reparação da pele, gerando ulceras crônicas, que são consideradas como relevantes problemas de saúde pública. O presente estudo se propôs a estabelecer parâmetros de eficiência de membranas bioativas, preparadas com o biopolímero quitosana (QT), em associação ao extrato vegetal, madecassoside (MA). Nas preparações obtidas, foram avaliadas características físico-químicas e propriedades antimicrobianas. A biocompatibilidade das preparações, e sua capacidade de promover migração celular, foi testada in vitro em fibroblastos da linhagem NIH/3T3. As membranas foram divididas em grupos: QT 2%; QT/MA 0,10% (QTMA010); QT/MA 0,25% (QTMA025); QT/MA 0,50% (QTMA050). Os grupos foram avaliados em diferentes intervalos de tempo, de 0 a 96 horas (T0, T24, T48, T72, T96). Nossos dados indicam que membranas bioativas, preparadas com quitosana (QT 2%) e madecassoside (MA 0,10%, 0,25%, 0,50%), são biocompatíveis e possuem propriedades físico-químicas adequadas. As preparações contendo associação de ambos os compostos se mostraram superiores à QT. A capacidade de promover migração de fibroblastos, in vitro, foi estatisticamente superior em todos os grupos acrescidos de MA, indicando um papel relevante desse composto em preparações de utilização tópica para cicatrização úlceras cutâneas.

Effectiveness and safety of autologous platelet-rich plasma therapy with total contact casting versus total contact casting alone in treatment of trophic ulcer in leprosy: An observer-blind, randomized controlled trial.

BACKGROUND: Trophic ulcers secondary to leprosy pose a great stigma to patients and remain a challenge to the treating dermatologists. Platelet-rich plasma (PRP) introduces growth factors directly into the wound and aids in rapid healing. The role of PRP in the treatment of trophic ulcers in leprosy patients has not yet been established by randomized controlled trials. AIMS: To study the effectiveness and safety of autologous PRP therapy with total contact casting versus total contact casting alone in the treatment of trophic ulcers in leprosy. METHODS: In an observer-blind, randomized (1:1) controlled study, 118 patients were enrolled. PRP was prepared by the manual double-spin method (1600 rpm for 10 min followed by 4000 rpm for 10 min). After wound bed preparation, activated PRP was injected intra- and perilesionally, and platelet-poor plasma gel was applied over the ulcer bed. Occlusive dressings and total contact casting were then applied in Group A, and only total contact casting was applied in Group B. The same procedure was repeated every 2 weeks for 8 weeks. RESULTS: In all, 56 patients were analyzable in Group A and 52 in Group B. The surface area of the ulcer decreased significantly from first follow-up onward in both the groups (P < 0.001 in both the groups). Intergroup comparison showed that the reduction in the surface area of the ulcer was significantly more in Group A than in Group B from the first follow-up onward (P = 0.038) and the difference was maintained till the fifth follow-up (P < 0.001). At the end of the study, 91.10 ± 9.65% ulcer surface area reduction had occurred in Group A, whereas it was 79.77 ± 17.91% in Group B (P < 0.001). Trophic ulcers healed completely more often in paucibacillary leprosy patients (P < 0.001) and in those with a lower initial surface area of the ulcer (P < 0.001). LIMITATION: Short duration of treatment (8 weeks). CONCLUSION: PRP combined with total contact casting accelerates the healing of trophic ulcers of leprosy and is more effective than total contact casting alone. Complete remission is more likely to occur when the duration and surface area of ulcer are less and in the paucibacillary spectrum.

Evidências científicas sobre as úlceras de pernas como sequela da hanseníase / Evidencias científicas sobre las úlceras de piernas como secuela de la lepra / Scientific evidence on leg ulcers as leprosy sequel

Resumo Objetivo Investigar as evidências científicas sobre as úlceras de pernas como sequela da hanseníase. Métodos Revisão Integrativa da Literatura (RIL). Para identificação do tema e questão de pesquisa, utilizou-se a estratégia PICo, na sequencia procedeu-se a busca nas bases de dados: Index to Nursing and Allied Health Literature (Cinahl), Literatura Latino-americana e do Caribe em Ciências da Saúde (Lilacs), Banco de dados em Enfermagem (BDENF), EMBASE (Elsevier), PUBMED (National Library of Medicine), SCOPUS (Elsevier), Web of Science (Clarivate Analytics), selecionados os descritores específicos para cada uma delas e elaboradas as respectivas estratégias de busca. Os idiomas considerados foram: inglês, português e espanhol. O período da RIL foi indeterminado. Para a seleção dos estudos, utilizou-se a ferramenta Ryyan que permitiu dois dos autores independentemente incluir, excluir, ou ficar indeciso, as discordâncias foram solucionadas por um terceiro. Os artigos selecionados foram classificados de acordo com a Agency for Healthcare Research and Quality (AHRQ). E para a interpretação dos resultados os artigos foram agrupados por semelhança e categorizados da seguinte maneira: autor, ano país, nível de evidência, objetivos e resultados, conclusão e recomendação. Resultados Identificou-se 415 estudos e 10 foram incluídos na revisão. O resultado principal obtido foi o tratamento tópico da úlcera, as vulnerabilidades e os determinantes que assolam os acometidos pela hanseníase não foram estudados. Conclusão Não há fortes evidências sobre as terapias para o tratamento de úlceras de pernas decorrentes da hanseníase que apoiem a diminuição de sequelas incapacitantes ocasionadas pela doença perpetuando o estigma e a desigualdade social.

Resumen Objetivo investigar las evidencias científicas sobre las úlceras de piernas como secuela de la lepra. Métodos revisión integradora de la literatura (RIL). Para la identificación del tema y pregunta de la investigación, se utilizó la estrategia PICo, luego se procedió a la búsqueda en las bases de datos: Index to Nursing and Allied Health Literature (Cinahl), Literatura Latinoamericana y del Caribe en Ciencias de la Salud (Lilacs), Banco de dados em Enfermagem (BDENF), EMBASE (Elsevier), PUBMED (National Library of Medicine), SCOPUS (Elsevier), Web of Science (Clarivate Analytics), se seleccionaron los descriptores específicos para cada una y se elaboraron las respectivas estrategias de búsqueda. Se consideraron los idiomas inglés, portugués y español. El período de la RIL fue indeterminado. Para la selección de los estudios, se utilizó la herramienta Ryyan, que permitió dos de los autores independientemente incluir, excluir o estar indeciso, las discrepancias fueron resueltas por un tercero. Los artículos seleccionados se clasificaron según la Agency for Healthcare Research and Quality (AHRQ). Y para la interpretación de los resultados, los artículos se agruparon por semejanza y se categorizaron de la siguiente manera: autor, año, país, nivel de evidencia, objetivos y resultados, conclusión y recomendación. Resultados se identificaron 415 estudios y se incluyeron 10 en la revisión. El resultado principal obtenido fue el tratamiento tópico de la úlcera, las vulnerabilidades y los determinantes que asolaron a los afectados por la lepra no fueron estudiados. Conclusión no hay fuertes evidencias sobre las terapias para el tratamiento de úlceras de piernas resultantes de la lepra que justifiquen la reducción de secuelas incapacitantes provocadas por la enfermedad, perpetuando el estigma y la desigualdad social.

Abstract Objective To investigate the scientific evidence on leg ulcers as leprosy sequel. Methods This is an Integrative Literature Review (ILR). In order to identify the theme and research question, the PICo strategy was used, in the sequence the search was carried out in Index to Nursing and Allied Health Literature (CINAHL), Latin American & Caribbean Literature in Health Sciences (LILACS), (BDENF), EMBASE (Elsevier), PUBMED (National Library of Medicine), SCOPUS (Elsevier), Web of Science (Clarivate Analytics) databases. Specific descriptors were selected for each of them and respective search strategies were created. The languages considered were English, Portuguese and Spanish. The ILR period was indeterminate. For the study selection, the Ryyan tool was used and allowed two of the authors to independently include, exclude or remain undecided, disagreements were solved by a third party. The selected articles have been ranked according to the Agency for Healthcare Research and Quality (AHRQ). And for interpretation of results, the articles were grouped by similarity and categorized into author, country year, level of evidence, objectives and results, conclusion and recommendation. Results 415 studies were identified and 10 were included in the review. The main outcome was the topical treatment of ulcers, the vulnerabilities and the determinants that afflict those affected by leprosy were not studied. Conclusion There is no strong evidence on therapies for the treatment of leprosy-induced leg ulcers that support the reduction of disabling sequel caused by disease perpetuating stigma and social inequality.

Platelet-rich plasma and its utility in medical dermatology: A systematic review.

The field of dermatology has seen numerous therapeutic innovations in the past decade with platelet-rich plasma (PRP), recently garnering significant interest in alopecia, acne scarring, and skin rejuvenation. In other conditions of dermatology, such as chronic wounds and vitiligo, PRP has been investigated but has received less attention. The objective of this literature review was to focus on conditions of medical dermatology and to consolidate the available evidence on PRP for the practicing dermatologist. This review evaluates the literature up to October 31, 2018, and a search was conducted in the PubMed database for "platelet-rich plasma," "platelet releasate," "platelet gel," "platelet-rich fibrin" or "PRP" and "dermatology," "skin," "cutaneous," "wound," or "ulcer." In total, 14 articles met the inclusion criteria for this review. In studies representing Levels of Evidence 1b-4 according to the Centre for Evidence-Based Medicine, Oxford, PRP significantly improved wound healing in chronic diabetic ulcers, venous ulcers, pressure ulcers, leprosy ulcers, acute traumatic wounds, and ulcers of multifactorial etiologies. Two studies also documented benefits of adjunctive PRP in stable vitiligo. In chronic wounds of multiple etiologies and vitiligo, PRP warrants further investigation because it represents a potential therapeutic adjunct or alternative with a favorable side effect profile.

Utility of platelet rich fibrin gel therapy in nonhealing ulcer secondary to ecthyma gangrenosum.

Platelet rich fibrin (PRF) gel is a new second generation platelet concentrate, which has been widely used in various dermatological conditions such as nonhealing diabetic foot ulcers, venous ulcers, and trophic ulcers in leprosy. In this case report, we present a patient with nonhealing ulcer secondary to ecthyma gangrenosum, who showed dramatic response with PRF gel. This case suggests a role of PRF gel in nonhealing ulcers of infectious etiology which has not been described in English language literature. Considering previous literature and our case, it may be concluded that PRF gel may be utilized as an effective alternative for nonhealing ulcers of nonneoplastic etiology.

Lucio's leprosy: a clinical and therapeutic challenge

Leprosy has been a challenge in different areas of medicine; in underdeveloped countries it remains a public health problem, in which the social and economic problems facilitate the disease persistence. The diagnosis and consequently the treatment are delayed due to the clinical polymorphism of leprosy, which especially at the beginning the manifestations are not as evident, as is the case of diffuse lepromatous leprosy. This favors the disabilities and the development of the reaction episodes. Fortunately, reaction episodes have decreased with the use of multidrug therapy, and better control of the type 2 reactions has been managed with the use of thalidomide, as in Lucio's phenomenon.

Platelet-rich plasma in dermatology: boon or a bane?

There has been a recent spurt in application of platelet-rich plasma (PRP) in dermatology and aesthetic medicine. However, the details regarding use of PRP in various dermatological indications ranging from hair restoration to chronic ulcers are dispersed in literature, herein we have tried to focus all under one heading. Overall, PRP seems to be a promising therapeutic modality but the level of evidence as of now, from the available published data is low. This review will also stimulate readers to carry out well designed, larger population based trials, so as to validate its use in dermatology practice.

Ulcerated and nonulcerated nontuberculous cutaneous mycobacterial granulomas in cats and dogs.

BACKGROUND: Mycobacterial granulomas of the skin and subcutis can be caused by one of a number of pathogens. This review concentrates on noncultivable species that cause diseases characterized by focal granuloma(s), namely leproid granuloma (in dogs) and feline leprosy (in cats). Clinically indistinguishable lesions can be caused by tuberculous organisms (Mycobacterium bovis and Mycobacterium microti) and members of the Mycobacterium avium complex. Rapidly growing mycobacterial species that cause infection of the subcutaneous panniculus associated with draining tracts are not discussed. Disease caused by Mycobacterium ulcerans is an important emerging differential diagnosis for ulcerated cutaneous nodules in certain localized regions. CLINICAL LESIONS: Lesions comprise one or multiple nodules in the skin/subcutis. These are generally firm and well circumscribed, and typically become denuded of hair. They may or may not ulcerate, depending on the virulence of the causal organisms and the immune response of the host. DIAGNOSIS: The most inexpensive, noninvasive means of diagnosis is by submission of methanol-fixed, Romanowsky-stained smears to a Mycobacterium Reference Laboratory after detecting negatively stained or acid-fast bacilli on cytological smears. Scrapings of material from slides usually provide sufficient mycobacterial DNA to enable identification of the causal organism using sequence analysis of amplicons after PCR using specific mycobacterial primers. THERAPY: Therapy relies upon a combination of marginal resection of easily accessible lesions and treatment using two or three drugs effective against slowly growing mycobacteria, choosing amongst rifampicin, clarithromycin, clofazimine and pradofloxacin/moxifloxacin.

Clinic-epidemiological evaluation of ulcers in patients with leprosy sequelae and the effect of low level laser therapy on wound healing: a randomized clinical trial.

BACKGROUND: Mycobacterium leprae is the only pathogenic bacteria able to infect peripheral nerves. Neural impairment results in a set of sensitive, motor and autonomic disturbances, with ulcers originating primarily on the hands and feet. The study objectives were to analyze the clinic-epidemiological characteristics of patients attended at one specialized dressing service from a leprosy-endemic region of the Brazilian Amazon and to evaluate the effect of low level laser therapy (LLLT) on wound healing of these patients. METHODS: Clinic-epidemiological evaluation of patients with leprosy sequelae was performed at the reference unit in sanitary dermatology of the state of Pará in Brazil. We conducted anamnesis, identification of the regions affected by the lesions and measurement of ulcer depth and surface area. After that, we performed a randomized clinical trial. Fifty-one patients with ulcers related to leprosy were evaluated, twenty-five of them were randomly assigned to a low level laser therapy group or a control group. Patients were treated 3 times per week for 12 weeks. Outcome measures were ulcer surface area, ulcer depth and the pressure ulcer scale for healing score (PUSH). RESULTS: Ninety-seven ulcers were identified, with a mean (SD) duration of 97.6 (111.7) months, surface area of 7.3 (11.5) cm2, and depth of 6.0 (6.2) mm. Statistical analysis of the data determined that there were no significant differences in the variables analyzed before and after treatment with low level laser therapy. CONCLUSIONS: Ulcers in patients with leprosy remain a major source of economic and social losses, even many years after they have been cured of M. leprae infection. Our results indicate that it is necessary to develop new and more effective therapeutic tools, as low level laser therapy did not demonstrate any additional benefits to ulcer healing with the parameters used in this study. TRIAL REGISTRATION: The trial was registered at ClinicalTrials.gov as NCT00860717.

[Treatment of skin ulcers in collagen vascular diseases].

The causes of skin ulcers in collagen vascular diseases are complicated, and involve peripheral vascular complications, vasculitis, and thrombosis. It is necessary to determine the treatment, such as oral medication, infusion, ointment and surgery after careful consideration of its causes. This review shows skin manifestations of various collagen vascular diseases and the causes of skin ulcers in these diseases.

Interventions for skin changes caused by nerve damage in leprosy.

BACKGROUND: More than three million persons are disabled by leprosy worldwide. The main complication of sensory nerve damage is neuropathic ulceration, particularly of the feet. In this review we explored interventions that can prevent and treat secondary damage to skin and limbs. OBJECTIVES: To assess the effects of self-care, dressings and footwear in preventing and healing secondary damage to the skin in persons affected by leprosy. SEARCH STRATEGY: We searched the Cochrane Skin Group Specialised Register (April 2008), the Cochrane Central Register of Controlled Trials (The Cochrane Library Issue 1, 2008), MEDLINE (from 2003 to April 2008), EMBASE (from 2005 to April 2008), CINAHL (1982-2006) and LILACS (1982- April 2008 ) as well as online registers of ongoing trials (April 2008). SELECTION CRITERIA: Randomised controlled trials involving anyone with leprosy and damage to peripheral nerves treated with any measures designed to prevent damage with the aim of healing existing ulcers and preventing development of new ulcers. DATA COLLECTION AND ANALYSIS: Two authors assessed trial quality and extracted data. MAIN RESULTS: Eight trials with a total of 557 participants were included. The quality of the trials was generally poor. The interventions and outcome measures were diverse. Although three studies that compared zinc tape to more traditional dressings found some benefit, none of these showed a statistically significant effect. One trial indicated that topical ketanserin had a better effect on wound healing than clioquinol cream or zinc paste, RR was 6.00 (95% CI 1.45 to 24.75). We did not combine the results of the two studies that compared topical phenytoin to saline dressing, but both studies found statistically significant effects in favour of phenytoin for healing of ulcer (SMD -2.34; 95% CI -3.30 to -1.39; and SMD -0.79; 95% CI -1.20 to 0.39). Canvas shoes were not much better than PVC-boots, and double rocker shoes did not promote healing much more than below-knee plasters. AUTHORS' CONCLUSIONS: One study suggested that topical ketanserin is more effective than clioquinol cream or zinc paste. Topical phenytoin (two studies) may be more effective than saline dressing regarding ulcer healing. For the other dressings the results were equivocal. Canvas shoes were a little better than PVC-boots, but not significantly, and the effect of double rocker shoes compared to below-knee plasters was no different in promoting the healing of ulcers. No side effects were documented. There is a lack of high quality research in the field of ulcer prevention and treatment in leprosy. New trials should follow the current standards for design and reporting of randomised controlled trials.

Proyecto de prevención de discapacidades y rehabilitación física para enfermos de lepra. Provincia de Jiangxi, china / No disponible

La Asociación Fontilles, miembro de la Federación Internacional de Asociaciones de Lucha contra la Lepra (ILEP), inicia su trabajo en China colaborando con otros miembros de dicha Federación, y con el Centro Nacional para el Control de Enfermedades de Transmisión Sexual y Lepra de Nanjing en el tercer estadio del Proyecto nacional de Prevención de Discapacidades (PDD) y Rehabilitación Física en la República Popular China. La Asociación Fontilles ha trabajado en esta provincia durante cinco años del 2000 al 2004. El artículo pretende describir las actividades básicas relacionadas con el Proyecto y los resultados obtenidos tras llevarlas a cabo

No disponible

Ulceraciones en la lepra. Tratamiento / Ulcerations in lepra. Management

Se estudian las úlceras en la lepra, su etiología, frecuencia y localización, la mayoría de carácter neurotrófico. Se describen diferentes tratamientos tópicos y quirúrgicos, resaltando las dificultades terapéuticas y la cronicidad (AU)

[How does one treat the osteitis and osteoarthritis of the extremities in older leprosy patients using granulated table sugar?]. / Comment guérir les ostéites et ostéo-arthrites des extrémités des anciens malades de la lèpre par le sucre cristallisé alimentaire?

A common problem of osteitis and septic arthritis is the recurrent bone infection after surgical debridement, a problem frequently encountered in patients with sequela leprosy. In these cases the authors propose the use of an ancient method of post surgical wound care based on the treatment with ordinary granulated sugar. The hyperosmolar climate created this way in the wounds inhibits the bacterial growth, enhances bacterial death and therefore permits the growth of granulation tissue in order to recover the debrided nude bones. At ILAD (Leprosy Institute of Dakar), 36 osteitis and septic arthritis were treated and healed during the last 2 years from March 1995 to March 1997 using this technic. All the wounds healed in the mean-time of 44 days. Only two of them needed a second debridement and healed afterwards. Up to now the method using ordinary sugar was applied in the treatment of infected wounds, eschars and postsurgical infections. Our experience shows that it also can be indicated to treat bone infections. This method is easy to apply also under often difficult field conditions and is very cheap.

Methods of treating plantar ulcers.

The purpose of this article is to describe the indications, precautions, and fabrication techniques for orthotic devices the authors use to facilitate the healing of plantar ulcers. The methods of fabricating and applying three types of orthotic devices developed by the staff at the Gillis W Long Hansen's Disease Center--walking casts, walking splints, and cutout sandals--are described. Patient examples are given for each of the methods. These techniques, in conjunction with patient education and the use of special footwear, provide clinicians with procedures they can use to aid in the healing of plantar ulcers secondary to leprosy, diabetes, or other neuropathic conditions.