RESUMEN
BACKGROUND: Laser toning using a low-fluence 1,064 nm Q-switched Nd:YAG laser is one of the most frequently used treatment modalities for melasma. However, this therapy is time consuming because it requires a lot of treatment sessions. Recently, it has been reported that transdermal radiofrequency (RF) is effective for the treatment of melasma. OBJECTIVE: To determine whether microneedle RF conduction could be an adjunct therapy for melasma, we have studied the effect of simultaneous treatments with laser toning and RF for melasma. METHODS: Fifteen patients with melasma underwent five sessions of laser toning and microneedle RF on the right side of the face, and only laser toning on the left side. Responses to treatments were evaluated using the Mexameter® (Courage Khazaka, Germany) score, the pigmentation and severity index (PSI) score, and the patient's overall assessment. Additionally, an electron microscopic study of a skin biopsy was performed. RESULTS: Both laser toning and combination therapy showed significant decreases in the Mexameter® and PSI score after five treatment sessions. Combination therapy showed a more significant improvement of melasma than laser toning. No remarkable side effects were reported. Electron microscopic analysis showed a greater number of vacuolar changes and increased loosening of melanocytes and adjacent epidermal cells after combination therapy. CONCLUSION: The combination treatment of laser toning and microneedle RF therapy showed a better therapeutic effect for melasma than laser toning alone. Therefore, the microneedle RF technique could be a new and safe adjunct therapy for the treatment of melasma.
RESUMEN
We describe a rare case of aneurysmal bone cysts (ABCs) that occurred in the petrous portion of the temporal bone. The ABCs were treated with preoperative embolization and complete removal of the mass from the adjacent tissue. The technical details suggest that preoperative embolization is a good treatment option for ABCs.
Asunto(s)
Quistes Óseos Aneurismáticos/cirugía , Embolización Terapéutica/métodos , Procedimientos Neuroquirúrgicos/métodos , Hueso Temporal/cirugía , Adolescente , Quistes Óseos Aneurismáticos/diagnóstico por imagen , Femenino , Humanos , Imagen por Resonancia Magnética , Cuidados Preoperatorios , Hueso Temporal/diagnóstico por imagen , Tomografía Computarizada por Rayos XRESUMEN
Very recently, the circadian rhythm was proved to play an important role in the pathogenesis of arthritis. The role of melatonin in the development and progress of rheumatoid arthritis has been implicated for decades. This study was aimed to investigate the effect of melatonin on the expression of circadian clock genes in mouse anti-type II collagen antibody-induced arthritis (CIA). Mice were divided into 3 groups: control, CIA, and CIA + melatonin treatment (MLT). Both mRNA and protein levels of circadian clock gene Cryptochrome1 (Cry1) were markedly decreased in CIA + MEL group compared with those in control and CIA groups. MLT increased paw thickness. Histologic and X-ray assessment also revealed increased infiltration of inflammatory cells, synovial hyperplasia, and the destruction of articular cartilage and bone by MLT. The concentrations of anti-type II collagen antibody in CIA + MEL group mice were significantly higher than those in control and CIA groups (P < 0.05). Serum concentrations of TNF-α (P < 0.005) and IL-6 (P < 0.05) in CIA + MLT group were also increased. Taken together, these results implicate that clock gene Cry1 may be involved in the aggravation of MLT-mediated arthritis in mice anti-type II collagen antibody-induced arthritis.