Terapias adjuvantes fotodinâmicas e fotobiomoduladoras antimicrobianas para osteonecrose maxilar relacionada a medicamentos – Relato de dois casos com acompanhamento de longo prazo

A osteonecrose maxilar associada a medicamentos (OMAM) é uma doença relativamente rara com alta morbidade. Nesse estudo, relatamos o tratamento de dois casos recalcitrantes de OMAM nas mandíbulas de duas idosas cujo tratamento para osteoporose foi feito com alendronato. Ambas as pacientes receberam sequestrectomia combinada com terapia fotodinâmica antimicrobiana (TFA) e fotobiomodulação (FBM). Durante o perioperatório e em atendimentos semanais pós-operatórios TFA tratou três pontos anatômicos através de um laser de diodo emitindo uma onda contínua de arseneto de gálio-alumínio a 660 nm (laser vermelho), 0,028 cm2, 0,1 W, 3,57 W/cm2 por 90 s por ponto, 9 J por ponto, 321 J/cm2 e uma energia total de 27 J. O tratamento com FBM foi aplicado em sessões pós-operatórias semanais, consistindo em ondas com 808 nm de comprimento e os demais parâmetros idênticos. Ambas as pacientes foram acompanhadas por dois anos e não relataram a recorrência de OMAM. Logo, TFA e FBM podem ser consideradas terapias adjuvantes não-invasivas para OMAM sem efeitos adversos.Medication-related osteonecrosis of the jaw (MRONJ) is a relatively rare condition with high morbidity. In this study, we report the management of two recalcitrant cases of MRONJ in the mandibles of two older women who received treatment with alendronate for osteoporosis. Sequestrectomies, combined with antimicrobial photodynamic therapy (aPDT) and photobiomodulation (PBMT), were performed in both patients. During perioperative and weekly postoperative aPDT sessions, a diode laser treated three anatomical points by emitting a continuous gallium-aluminum-arsenide wave at 660 nm (red laser), 0.028 cm2, 0.1 W, 3.57 W/cm2 for 90 s per point, 9 J per point, 321 J/cm2, and a total energy of 27 J. PBMT was applied weekly after surgery at 808 nm wavelength (other parameters being equal) for wound healing and pain relief. Both patients were followed-up for two years without any report of recurrence. Thus, aPDT and PBMT can be considered non-invasive adjuvant therapies for MRONJ without any adverse effects

Predation of native coccinellids by the invasive alien Harmonia axyridis (Coleoptera: Coccinellidae): detection in Britain by PCR-based gut analysis

1. The harlequin ladybird, Harmonia axyridis, is an invasive alien species that arrived in Britain in 2003 and has spread across most of the country. 2. This spread has been accompanied by a decline in some native coccinellid species, in particular, the two spot ladybird Adalia bipunctata and the ten spot ladybird Adalia decempunctata. One reason for this decline could be intraguild predation (IGP) of the Adalia species by H. axyridis. 3. A DNA-based approach was used to look for evidence of coccinellid IGP in the wild. Adalia bipunctata- and A. decempunctata-specific Polymerase chain reaction primers were developed to analyse the gut contents of field collected H. axyridis larvae for the presence of Adalia DNA. Harmonia axyridis larvae (156) were collected from lime trees at four sites in eastern England over 3 years. 4. Adalia bipunctata DNA was detected in 7.7% and A. decempunctata DNA in 4.5% of H. axyridis larvae. DNA from both Adalia species was detected in two larvae. 5. This is the first demonstration of specific IGP interactions between H. axyridis and other coccinellid species in wild populations in Britain