The Story of Helicobacter pylori: Depicting Human Migrations from the Phylogeography

Waskito, Langgeng Agung; Yamaoka, Yoshio

doi:10.1007/5584_2019_356

Cited by 17 publications

(25 citation statements)

References 66 publications

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“…One of the molecular mechanisms that H. pylori uses to gain exogenous DNA is by natural transformation using the ComB T4SS machinery, and the exchange of DNA by putative conjugative T4SS gene clusters present in the H. pylori genome. Furthermore, the increasing number of reports on transferable plasmids (Kleanthous et al, 1991;Hofreuter and Haas, 2002;Höfler et al, 2004;Joo et al, 2012;Rohrer et al, 2012) and phages (Schmid et al, 1990;Heintschel von Heinegg et al, 1993;Lehours et al, 2011;Luo et al, 2012;Uchiyama et al, 2012) in H. pylori strains encouraged researchers to propose that DNA transfer events through conjugation and phage transduction would also play an important role in H. pylori genetic diversity (Vale and Lehours, 2018;Waskito and Yamaoka, 2019). These discoveries and their role in producing genetic diversity in H. pylori should be investigated in more detail in future.…”

Section: Resultsmentioning

confidence: 99%

Four Chromosomal Type IV Secretion Systems in Helicobacter pylori: Composition, Structure and Function

et al. 2020

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Section: Resultsmentioning

confidence: 99%

Four Chromosomal Type IV Secretion Systems in Helicobacter pylori: Composition, Structure and Function

et al. 2020

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“…Присутствие hpsCentralNEA в Камеруне, Анголе и Нигерии свидетельствует о волне миграции носителей нило-сахарского языка на запад во влажный период голоцена (6-9 тыс. лет назад) [28,38]. Территориально популяционное разделение наблюдается в Судане по обе стороны от долины Нила, где две субпопуляции обнаруживаются с высокой частотой (рис.…”

Section: популяция Hpneafrica штаммов H Pyloriunclassified

Phylogenetic structure of the global population of <i>Helicobacter Pylori</i>

Старкова

Сварваль

2022

Russian Journal of Infection and Immunity

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During the co-evolutionary relationships between humans and bacterium Helicobacter pylori (H. pylori), spanning at least 100,000 years, a high rate of mutation and recombination events led to an extremely high genomic polymorphism of the H. pylori species. Despite this, the large diversity of H. pylori genomes is very well structured, allowing it to be divided into different populations associated with the geographic location of H. pylori strains. This review article summarized developments from numerous studies on the coevolution process and phylogenetic structure of the global population of H. pylori. The relationships between currently known bacterial populations and subpopulations, their geographical distribution, reconstruction of evolutionary pathway for ancestral and recent populations are described in detail. Phylogenetic analysis of the H. pylori population structure permitted to reconstruct both prehistoric and recent human migrations, demographic processes and the complex history of evolution H. pylori population.

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“…The fact that a distinct strain-specific sequence remains for centuries in offspring of an individual that has migrated to a different geographical location, argues for accurate transmission. This has led to the use of H. pylori in discovering details of human migration at individual and population levels [139,140].…”

Section: Physical Contactmentioning

confidence: 99%

Reconstitution and Transmission of Gut Microbiomes and Their Genes between Generations

Rosenberg

Zilber‐Rosenberg

2021

Microorganisms

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Microbiomes are transmitted between generations by a variety of different vertical and/or horizontal modes, including vegetative reproduction (vertical), via female germ cells (vertical), coprophagy and regurgitation (vertical and horizontal), physical contact starting at birth (vertical and horizontal), breast-feeding (vertical), and via the environment (horizontal). Analyses of vertical transmission can result in false negatives (failure to detect rare microbes) and false positives (strain variants). In humans, offspring receive most of their initial gut microbiota vertically from mothers during birth, via breast-feeding and close contact. Horizontal transmission is common in marine organisms and involves selectivity in determining which environmental microbes can colonize the organism’s microbiome. The following arguments are put forth concerning accurate microbial transmission: First, the transmission may be of functions, not necessarily of species; second, horizontal transmission may be as accurate as vertical transmission; third, detection techniques may fail to detect rare microbes; lastly, microbiomes develop and reach maturity with their hosts. In spite of the great variation in means of transmission discussed in this paper, microbiomes and their functions are transferred from one generation of holobionts to the next with fidelity. This provides a strong basis for each holobiont to be considered a unique biological entity and a level of selection in evolution, largely maintaining the uniqueness of the entity and conserving the species from one generation to the next.

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The Story of Helicobacter pylori: Depicting Human Migrations from the Phylogeography

Cited by 17 publications

References 66 publications

Four Chromosomal Type IV Secretion Systems in Helicobacter pylori: Composition, Structure and Function

Four Chromosomal Type IV Secretion Systems in Helicobacter pylori: Composition, Structure and Function

Phylogenetic structure of the global population of <i>Helicobacter Pylori</i>

Reconstitution and Transmission of Gut Microbiomes and Their Genes between Generations

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