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1.
BMC Surg ; 14: 37, 2014 Jun 16.
Artigo em Inglês | MEDLINE | ID: mdl-24934412

RESUMO

BACKGROUND: Aneurysms infra-patellar region are uncommon. Of them, true aneurysms are very rare and that of posterior tibial artery are extremely rare. The more common, pseudoaneurysms are commonly associated with trauma whereas the true ones are linked with either inflammatory or mycotic origins. CASE PRESENTATION: We reported another case of true aneurysm of posterior tibial artery without any evident aetiology. This was repaired with resection of aneurysm followed by interposition vein graft. CONCLUSION: Through this report, we discussed the rarity, review of literature and management of this unusual condition.


Assuntos
Aneurisma/cirurgia , Prótese Vascular , Artérias da Tíbia , Procedimentos Cirúrgicos Vasculares/métodos , Aneurisma/diagnóstico por imagem , Humanos , Masculino , Pessoa de Meia-Idade , Ultrassonografia Doppler
2.
Nat Commun ; 9(1): 2876, 2018 07 23.
Artigo em Inglês | MEDLINE | ID: mdl-30038374

RESUMO

Geothermal springs are model ecosystems to investigate microbial biogeography as they represent discrete, relatively homogenous habitats, are distributed across multiple geographical scales, span broad geochemical gradients, and have reduced metazoan interactions. Here, we report the largest known consolidated study of geothermal ecosystems to determine factors that influence biogeographical patterns. We measured bacterial and archaeal community composition, 46 physicochemical parameters, and metadata from 925 geothermal springs across New Zealand (13.9-100.6 °C and pH < 1-9.7). We determined that diversity is primarily influenced by pH at temperatures <70 °C; with temperature only having a significant effect for values >70 °C. Further, community dissimilarity increases with geographic distance, with niche selection driving assembly at a localised scale. Surprisingly, two genera (Venenivibrio and Acidithiobacillus) dominated in both average relative abundance (11.2% and 11.1%, respectively) and prevalence (74.2% and 62.9%, respectively). These findings provide an unprecedented insight into ecological behaviour in geothermal springs, and a foundation to improve the characterisation of microbial biogeographical processes.


Assuntos
Archaea/classificação , Bactérias/classificação , Ecossistema , Fontes Termais/microbiologia , Archaea/genética , Bactérias/genética , Classificação , Geografia , Temperatura Alta , Concentração de Íons de Hidrogênio , Microbiota , Nova Zelândia , Prevalência , Análise de Sequência de DNA
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