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MedRxiv : the Preprint Server For... Sep 2023Neonatal infections due to have increasingly been reported over the last few years. We performed a structured literature review of human infections in infants and...
Neonatal infections due to have increasingly been reported over the last few years. We performed a structured literature review of human infections in infants and adults to compare the epidemiology of infections between these distinct patient populations. Thirty-nine reports describing 176 infections met our inclusion criteria and were included. There were 37 infections occurring in adults caused by 23 species. The clinical presentations of infections were quite variable. In contrast, infections in infants were caused by only 3 species: (112/139, 80%), (2/139, 1%) and (2/139, 1%). All of the infants with infection presented with a sepsis syndrome or meningitis, often complicated by extensive cerebral destruction and hydrocephalus. Outcomes were commonly poor with 17% (24/139) mortality. Cystic encephalomalacia due to brain destruction was common in both Ugandan and American cases and 92/139 (66%) required surgical management of hydrocephalus following their infection. infections are likely underappreciated in infants and effective treatments are urgently needed.
PubMed: 37790370
DOI: 10.1101/2023.09.19.23295794 -
Frontiers in Microbiology 2024Legumes are renowned for their distinctive biological characteristic of forming symbiotic associations with soil bacteria, mostly belonging to the familiy, leading to... (Review)
Review
Legumes are renowned for their distinctive biological characteristic of forming symbiotic associations with soil bacteria, mostly belonging to the familiy, leading to the establishment of symbiotic root nodules. Within these nodules, rhizobia play a pivotal role in converting atmospheric nitrogen into a plant-assimilable form. However, it has been discerned that root nodules of legumes are not exclusively inhabited by rhizobia; non-rhizobial endophytic bacteria also reside within them, yet their functions remain incompletely elucidated. This comprehensive review synthesizes available data, revealing that and are the most prevalent genera of nodule endophytic bacteria, succeeded by , , , , and . To date, the bibliographic data available show that followed by and are the main hosts for nodule endophytic bacteria. Clustering analysis consistently supports the prevalence of and as the most abundant nodule endophytic bacteria, alongside , , and . Although non-rhizobial populations within nodules do not induce nodule formation, their presence is associated with various plant growth-promoting properties (PGPs). These properties are known to mediate important mechanisms such as phytostimulation, biofertilization, biocontrol, and stress tolerance, emphasizing the multifaceted roles of nodule endophytes. Importantly, interactions between non-rhizobia and rhizobia within nodules may exert influence on their leguminous host plants. This is particularly shown by co-inoculation of legumes with both types of bacteria, in which synergistic effects on plant growth, yield, and nodulation are often measured. Moreover these effects are pronounced under both stress and non-stress conditions, surpassing the impact of single inoculations with rhizobia alone.
PubMed: 38812696
DOI: 10.3389/fmicb.2024.1386742