Abstract Background Telogen effluvium is the most common form of non-scarring alopecia characterized by diffuse hair loss. Ischemia-modified albumin is a marker of oxidative stress and inflammation. Objective The aim of this study was to compare the levels of ischemia-modified albumin of telogen effluvium patients with healthy controls. Methods Ninety-one patients diagnosed with telogen effluvium and 35 healthy volunteers were included in the study. Serum ischemia-modified albumin level was determined by a fast-colorimetric method, and albumin cobalt binding test. The results were evaluated statistically. Results There was no statistically significant difference between the serum albumin values of patient and control groups (p = 0.739). Serum ischemia-modified albumin values were significantly higher in the patients with telogen effluvium than healthy controls (p < 0.001). Study limitations Body mass index values of the patient and control groups could not be calculated. Conclusions To the best of the authors’ knowledge, this is the first clinical study to investigate the role of oxidative stress in the pathogenesis of telogen effluvium using ischemia-modified albumin as a biomarker. Based on the results of the present study, it can be considered that oxidative stress plays an important role in the pathogenesis of telogen effluvium. There is a need for further studies to support the results of this study, to demonstrate the possible effects of oxidative stress, and to investigate the other oxidative stress markers in the pathogenesis of telogen effluvium.

OBJETIVO: Comparar os efeitos da heparina não fracionada (HNF) e da heparina de baixo peso molecular (HBPM) na cicatrização de feridas cutâneas de ratos. MÉTODOS: Quarenta e oito ratos machos Sprague-Dawley foram submetidos à ferida na pele dorsal com espessura total de 8mm e foram distribuídos aleatoriamente em três grupos iguais. No grupo experimental A, a heparina sódica foi injetada a uma concentração de 1000U/kg. No grupo experimental B, a enoxaparina foi injetada a uma concentração de 1mg/kg. Solução salina fisiológica (0,5ml) foi administrada para o grupo controle. As injeções foram feitas por via subcutânea, uma vez por dia, durante sete dias. Nos dias 7º e 10º amostras de tecido foram obtidas de todos os ratos. O exame histológico destes tecidos foi realizado em microscópio de luz. RESULTADOS: O exame histológico mostrou uma diferença significativa entre os grupos no 7º e 10º dias na cicatrização das feridas. Observou-se que a cicatrização de feridas do grupo com heparina de baixo peso molecular foi melhor. Esta diferença foi estatisticamente significante no 10º dia. CONCLUSÕES: A administração diária de doses únicas de heparina não fracionada e de heparina de baixo peso molecular melhora a cicatrização de feridas. A heparina de baixo peso molecular induz melhor a cicatrização de feridas do que a heparina não fracionada.

PURPOSE: To compare the effects of unfractionated heparin (UH) and a low molecular weight heparin (LMWH) on skin wound healing of rats. METHODS: Forty eight male Sprague-Dawley rats underwent 8mm full thickness dorsal skin wounds and were randomly assigned to three equal groups. In experimental group A, heparin sodium was injected at a concentration of 1000U/kg. In experimental group B, enoxaparin was injected at a concentration of 1mg/kg. Physiologic saline (0.5ml) was administered to the control group. Injections were made subcutaneously, once daily, for seven days. At 7th and 10th days tissue samples were taken from all rats. Histologic examination of these tissues was made under light microscope and scored. RESULTS: Histological examination showed a significant difference between the 7th and 10th day groups in wound healing. It was observed that wound healing of LMWH injected group is better. This difference is statistically significant at 10th day. CONCLUSIONS: Daily administration of single doses of unfractionated heparin and a low molecular weight heparin improves wound healing positively. Low molecular weight heparin induces wound healing more than unfractionated heparin.