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2.
J Cosmet Laser Ther ; 18(3): 165-9, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-26735938

RESUMEN

Subcutaneous atrophy is a known complication of steroid injections. Excellent results with fat grafting for the treatment of steroid atrophy have been documented. However, the benefit of treating steroid-induced subcutaneous atrophy in an extremity diagnosed with complex regional pain syndrome (CRPS) has not been described. CRPS, known formerly as reflex sympathetic dystrophy or RSD, causalgia, or reflex neurovascular dystrophy, is a severe, progressive musculoskeletal pain syndrome characterized by pain which is disproportionate to the severity of the inciting event, edema, or skin changes. Common treatment modalities include pharmacotherapy, physical therapy, and nerve blocks-each therapy producing varying results. We present a literature review of CRPS and the case of a 15-year-old female who developed CRPS of the left lower leg after arthroscopic debridement with retrograde drilling of an osteochondral lesion. Steroid atrophy of the involved area following a saphenous nerve block complicated the patient's treatment course. The area of atrophy was treated with autologous fat grafting. Following the adipose injection procedure, the patient experienced almost complete resolution of her CPRS-associated pain symptoms, along with improved cosmetic appearance of the area.


Asunto(s)
Tejido Adiposo/trasplante , Atrofia/terapia , Causalgia/terapia , Cicatriz/terapia , Adolescente , Corticoesteroides/efectos adversos , Atrofia/inducido químicamente , Causalgia/inducido químicamente , Cicatriz/inducido químicamente , Femenino , Humanos , Nervios Periféricos/fisiopatología , Resultado del Tratamiento
3.
Oncotarget ; 7(2): 1227-41, 2016 Jan 12.
Artículo en Inglés | MEDLINE | ID: mdl-26517521

RESUMEN

Melanoma is the most aggressive and deadly form of cutaneous neoplasm due to its propensity to metastasize. Oncogenic BRAF drives sustained activation of the BRAF/MEK/ERK (MAPK) pathway and cooperates with PI3K/AKT/mTOR (PI3K) signaling to induce epithelial to mesenchymal transition (EMT), leading to cell invasion and metastasis. Therefore, targeting these pathways is a promising preventive/therapeutic strategy. We have shown that fisetin, a flavonoid, reduces human melanoma cell invasion by inhibiting EMT. In addition, fisetin inhibited melanoma cell proliferation and tumor growth by downregulating the PI3K pathway. In this investigation, we aimed to determine whether fisetin can potentiate the anti-invasive and anti-metastatic effects of sorafenib in BRAF-mutated melanoma. We found that combination treatment (fisetin + sorafenib) more effectively reduced the migration and invasion of BRAF-mutated melanoma cells both in vitro and in raft cultures compared to individual agents. Combination treatment also effectively inhibited EMT as observed by a decrease in N-cadherin, vimentin and fibronectin and an increase in E-cadherin both in vitro and in xenograft tumors. Furthermore, combination therapy effectively inhibited Snail1, Twist1, Slug and ZEB1 protein expression compared to monotherapy. The expression of MMP-2 and MMP-9 in xenograft tumors was further reduced in combination treatment compared to individual agents. Bioluminescent imaging of athymic mice, intravenously injected with stably transfected CMV-luciferase-ires-puromycin.T2A.EGFP-tagged A375 melanoma cells, demonstrated fewer lung metastases following combination treatment versus monotherapy. Our findings demonstrate that fisetin potentiates the anti-invasive and anti-metastatic effects of sorafenib. Our data suggest that fisetin may be a worthy adjuvant chemotherapy for the management of melanoma.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/farmacología , Neoplasias Pulmonares/prevención & control , Melanoma/tratamiento farmacológico , Ensayos Antitumor por Modelo de Xenoinjerto , Animales , Western Blotting , Cadherinas/metabolismo , Línea Celular Tumoral , Movimiento Celular/efectos de los fármacos , Células Cultivadas , Sinergismo Farmacológico , Transición Epitelial-Mesenquimal/efectos de los fármacos , Femenino , Flavonoides/administración & dosificación , Flavonoides/farmacología , Flavonoles , Humanos , Neoplasias Pulmonares/metabolismo , Neoplasias Pulmonares/secundario , Metaloproteinasa 2 de la Matriz/metabolismo , Metaloproteinasa 9 de la Matriz , Melanoma/metabolismo , Melanoma/patología , Ratones Desnudos , Mutación , Invasividad Neoplásica , Niacinamida/administración & dosificación , Niacinamida/análogos & derivados , Niacinamida/farmacología , Compuestos de Fenilurea/administración & dosificación , Compuestos de Fenilurea/farmacología , Proteínas Proto-Oncogénicas B-raf/genética , Proteínas Proto-Oncogénicas B-raf/metabolismo , Sorafenib , Carga Tumoral/efectos de los fármacos , Carga Tumoral/genética
4.
Diabetes Care ; 36(8): 2247-53, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23423695

RESUMEN

OBJECTIVE: Lipodystrophies are categorized by the extent of fat loss (generalized vs. partial) and by inheritance (congenital vs. acquired). We examined whether a group of patients with partial lipodystrophy of the limbs (PLL), type 2 diabetes mellitus (T2DM), and an absence of a family history of lipodystrophy constitute a new clinical subtype. RESEARCH DESIGN AND METHODS: Ten women with T2DM and PLL were identified in academic diabetes clinics and were matched by age, sex, BMI, ethnicity, and diabetes status with 10 women with control T2DM without lipodystrophy. All patients were characterized by clinical evaluation and hyperinsulinemic clamp. RESULTS: Patients with T2DM and PLL exhibited symmetrical loss of subcutaneous fat in forearms, or forearms plus calves, and acanthosis nigricans. Maximally stimulated glucose disposal rates were markedly reduced by 56% in the T2DM with PLL group compared with the control T2DM patients, whether normalized by body weight or surface area. Most PLL patients exhibited little or no insulin-mediated glucose uptake after subtraction of non-insulin-mediated glucose uptake. The T2DM with PLL group also had greater elevations in hepatic transaminases and triglycerides and earlier onset of diabetes compared with control T2DM. CONCLUSIONS: T2DM with PLL represents a previously unrecognized phenotype of lipodystrophy and of T2DM. These T2DM patients exhibit symmetrical lipodystrophy of the distal limbs, acanthosis nigricans, marked insulin resistance with little insulin-mediated glucose uptake, hypertriglyceridemia, and hepatic transaminase elevations, which are greater in severity than observed in patients with common T2DM.


Asunto(s)
Diabetes Mellitus Tipo 2/complicaciones , Lipodistrofia/complicaciones , Acantosis Nigricans/patología , Adulto , Femenino , Antebrazo/patología , Glucosa/metabolismo , Humanos , Insulina , Resistencia a la Insulina , Pierna , Lipodistrofia/patología , Persona de Mediana Edad
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