NewFill for skin augmentation: a new filler or failure?
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Biomedical subjects
Publications and source records attributed to Cheryl M Burgess.
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Postinflammatory hyperpigmentation (PIH) is a common acquired excess of pigment in the epidermal and/or dermal layers of the skin. Lesions persist for extended periods if untreated, thus therapy is warranted. Topical monotherapies include the standard bleaching agent hydroquinone (HQ) as well as retinoids. Recently, several fixed-dose combination products were introduced to the armamentarium: HQ 4%-retinol 0.15% in a microsponge formulation; HQ 4%-retinol 0.3%; mequinol 2%-tretinoin (RA) 0.01%; and fluocinolone acetonide (FA) 0.01%, HQ 4%, and RA 0.05%. Recent findings have suggested that mequinol 2%-RA 0.01% solution is a promising alternative for the treatment of PIH.
BACKGROUND: Lipodystrophy syndrome is uniquely associated with the use of highly active antiretroviral therapy (HAART) containing protease inhibitors or nucleoside reverse transcriptase inhibitors. Between 15% and 80% of patients on HAART develop facial lipoatrophy within 10 months of initiating therapy. At present, no ideal treatment strategies have emerged in spite of the psychosocial stress, resulting in depression and isolation in many HIV-infected patients. Most soft tissue fillers seem to be well tolerated; however, various reactions such as allergic reactions, infection, and inflammatory and allergic granulomatous nodules are possible. Poly-L-lactic acid (PLA; New-Fill, Biotech Industry SA, Luxembourg) is currently being used in Europe and is approved by the Food and Drug Administration (FDA) in the United States for soft tissue augmentation in HIV-associated facial lipoatrophy. OBJECTIVE: To determine the safety and efficacy of PLA for dermal enhancement of facial lipoatrophy in immuncompromised HIV-infected patients with prior use of HAART. METHODS: Sixty-one immunocompromised, HIV-infected male patients (52 whites, 7 African Americans, 1 Latino, and 1 Asian) underwent multiple treatment sessions with PLA over a 5-month period for facial lipoatrophy. The severity of facial lipoatrophy was assessed and photographs were taken at baseline and before each treatment session. Periodic monitoring for adverse reactions and degree of improvement were assessed by the patient, the treating physician, and a non-treating physician. RESULTS: At the 6-month follow-up, all 61 immunocompromised HIV patients had a successful outcome, defined as smoothing of the skin with less concavities or depressions, and improved overall appearance in an average of 3 treatment sessions. Although all patients were very pleased with their results, two patients developed persistent asymptomatic palpable intradermal papules in the infraorbital region as a result of the site of placement and concentration of PLA. On long-term follow-up (18 months), 48 of 61 (79%) required an average of 3 visits to achieve the desired enhancement and 13 of 61 (21%) patients requested additional treatment sessions beyond the initial 3 sessions. Although the patient and the physicians rated the level of improvement as "Excellent," the desire for further dermal enhancement was purely subjective. In general, the procedures were well tolerated without the clinical development of adverse reactions. CONCLUSION: The use of PLA to treat facial lipoatrophy resulted in significant and prolonged improvement in HIV-infected patients. The effect was long lasting, for up to 2 years in some patients, depending on when treatment was initiated. There were no reported cases of infection, allergies, or serious adverse reactions, and the treatment was well tolerated.
The determination of particular allergens with respect to local anesthetics may present difficulty within the realm of clinical dentistry. A case is presented that dramatizes the difficulties in determining the specific allergen after a patient undergoing several episodes of restorative dentistry with several varying regimens of local anesthesia repeatedly reacted with skin rashes and pruritus approximately 36 hours after treatment. The patient was a 76-year-old man with a complex medical history. A challenge procedure performed with a commercial formulation of local anesthesia resulted in a positive delayed hypersensitivity reaction. An additional challenge procedure with cardiac lidocaine resulted in a negative challenge. A latex-induced delayed-type hypersensitivity reaction was suspected but unproven because the patient declined further allergy testing. Therefore, the conclusion was that the allergen was an unknown substance within the commercial local anesthetic formulation.