<i>Haemophilus</i>

Kilian, Mogens

doi:10.1002/9781118960608.gbm01198

Cited by 8 publications

(6 citation statements)

References 299 publications

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“…We also observed a significant decrease in the genus, Haemophilus, following HVolTr. This finding is in contrast to a recent study that found a significant increase in Haemophilus , which has been associated with several pathogenic bacteria (Kilian, 2015), following an ultra‐marathon event (Grosicki, Durk, & Bagley, 2019). The difference in findings may be the result of the extreme nature of an ultra‐marathon event.…”

Section: Discussioncontrasting

confidence: 99%

The influence of exercise training volume alterations on the gut microbiome in highly‐trained middle‐distance runners

Craven

Cox

Bellinger

et al. 2021

European Journal of Sport Science

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The aim of this study was to determine the influence of training volume alterations on diversity and composition of the gut microbiome in a free-living cohort of middle-distance runners. Fourteen highly-trained middle-distance runners (n=8 men; 𝑉 ̇O2peak = 70.1 ± 4.3 ml•kg•min -1 ; n=6 women, 𝑉 ̇O2peak: 59.0 ± 3.2 ml•kg•min -1 ) completed three weeks of normal training (NormTr), three weeks of high-volume training (HVolTr; a 10, 20 and 30% increase in training volume during each successive week from NormTr), and a one-week taper (TaperTr; 55% exponential reduction in training volume from HVolTr week three). Faecal samples were collected before and immediately after each training phase to quantify alphadiversity and composition of the gut microbiome. A three-day diet record was collected during each training phase and a maximal incremental running test was completed after each training phase. Results showed no significant changes in nutritional intake, alpha-diversity, or global microbial composition following HVolTr or TaperTr compared to NormTr (p's>0.05).Following HVolTr, there was a significant decrease in Pasterellaceae (p=0.03), Lachnoclostridium (p=0.02), Haemophilus (p=0.03), S. parasagunis (p=0.02), and H. parainfluenzae (p=0.03), while R. callidus (p=0.03) significantly increased. These changes did not return to NormTr levels following TaperTr. This study shows that the alpha-diversity and global composition of the gut microbiome were unaffected by changes in training volume. However, an increase in training volume led to several changes at the lower taxonomy levels that did not return to pre-HVolTr levels following a taper period.

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Section: Discussioncontrasting

confidence: 99%

The influence of exercise training volume alterations on the gut microbiome in highly‐trained middle‐distance runners

Craven

Cox

Bellinger

et al. 2021

European Journal of Sport Science

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“…The relative abundance of genera Haemophilus, Neisseria , and Actinomyces increased in response to urea and decrease in response to AHA supplementation. The members of Haemophilus ferment glucose (Kilian, 2015 ), and H . haemolyticus and H .…”

Section: Discussionmentioning

confidence: 99%

Insights into Abundant Rumen Ureolytic Bacterial Community Using Rumen Simulation System

et al. 2016

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Urea, a non-protein nitrogen for dairy cows, is rapidly hydrolyzed to ammonia by urease produced by ureolytic bacteria in the rumen, and the ammonia is used as nitrogen for rumen bacterial growth. However, there is limited knowledge with regard to the ureolytic bacteria community in the rumen. To explore the ruminal ureolytic bacterial community, urea, or acetohydroxamic acid (AHA, an inhibitor of urea hydrolysis) were supplemented into the rumen simulation systems. The bacterial 16S rRNA genes were sequenced by Miseq high-throughput sequencing and used to reveal the ureoltyic bacteria by comparing different treatments. The results revealed that urea supplementation significantly increased the ammonia concentration, and AHA addition inhibited urea hydrolysis. Urea supplementation significantly increased the richness of bacterial community and the proportion of ureC genes. The composition of bacterial community following urea or AHA supplementation showed no significant difference compared to the groups without supplementation. The abundance of Bacillus and unclassified Succinivibrionaceae increased significantly following urea supplementation. Pseudomonas, Haemophilus, Neisseria, Streptococcus, and Actinomyces exhibited a positive response to urea supplementation and a negative response to AHA addition. Results retrieved from the NCBI protein database and publications confirmed that the representative bacteria in these genera mentioned above had urease genes or urease activities. Therefore, the rumen ureolytic bacteria were abundant in the genera of Pseudomonas, Haemophilus, Neisseria, Streptococcus, Actinomyces, Bacillus, and unclassified Succinivibrionaceae. Insights into abundant rumen ureolytic bacteria provide the regulation targets to mitigate urea hydrolysis and increase efficiency of urea nitrogen utilization in ruminants.

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“…Haemophilus are Gram-negative coccobacilli that inhabit the upper respiratory tract and are rarely associated with ocular infections [ 202 , 203 ]. Pathogenic strains that cause disease generally enter the upper respiratory tract through droplet inhalation or direct contact [ 204 ].…”

Section: Gram-negative Ocular Pathogensmentioning

confidence: 99%

Ocular Bacterial Infections: A Ten-Year Survey and Review of Causative Organisms Based on the Oklahoma Experience

Astley,

Mursalin,

Coburn

et al. 2023

Microorganisms

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Ocular infections can be medical emergencies that result in permanent visual impairment or blindness and loss of quality of life. Bacteria are a major cause of ocular infections. Effective treatment of ocular infections requires knowledge of which bacteria are the likely cause of the infection. This survey of ocular bacterial isolates and review of ocular pathogens is based on a survey of a collection of isolates banked over a ten-year span at the Dean McGee Eye Institute in Oklahoma. These findings illustrate the diversity of bacteria isolated from the eye, ranging from common species to rare and unique species. At all sampled sites, staphylococci were the predominant bacteria isolated. Pseudomonads were the most common Gram-negative bacterial isolate, except in vitreous, where Serratia was the most common Gram-negative bacterial isolate. Here, we discuss the range of ocular infections that these species have been documented to cause and treatment options for these infections. Although a highly diverse spectrum of species has been isolated from the eye, the majority of infections are caused by Gram-positive species, and in most infections, empiric treatments are effective.

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Haemophilus

Cited by 8 publications

References 299 publications

The influence of exercise training volume alterations on the gut microbiome in highly‐trained middle‐distance runners

The influence of exercise training volume alterations on the gut microbiome in highly‐trained middle‐distance runners

Insights into Abundant Rumen Ureolytic Bacterial Community Using Rumen Simulation System

Ocular Bacterial Infections: A Ten-Year Survey and Review of Causative Organisms Based on the Oklahoma Experience

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