Detección de Enterococcus resistentes a altos niveles de aminoglucósidos y resistentes a glucopéptidos en Lactuca sativa (lechuga)

Ronconi, María Cristina; Merino, Luis Antonio; Fernández, G.

doi:10.1016/s0213-005x(02)72823-1

Cited by 10 publications

(1 citation statement)

References 9 publications

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“…from fresh produce such as celery, cilantro, mustard greens, spinach, collards, parsley, dill, cabbage and cantaluope, and showed that many strains harboured antibiotic resistances. Similarly Ronconi, et al [227] isolated predominantly E. faecium and E. faecalis strains from lettuce and many strains were also antibiotic resistant.…”

Section: Present Status Of Natural Association Of Human Gut Microbes ...mentioning

confidence: 93%

"Human Gut Microbes Assisted Agricultural Food Production for Better Human Health: A New Concept"

Borkar¹

2023

BJSTR

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Health is a prime concern for the better and long life, which is affected by several factors like nutrition, immunity, infectious agents, mental status of a human etc. In recent years, it is demonstrated that all these factors influencing human health are governed by human gut microbes. Human Gut microbes are those microorganisms, including bacteria and archaea that lives in the gastro-intestinal (GI) tracts of humans. 95% of the body's microbiota is found in the GI tract and plays a key role in digestive, metabolic, immune and neurological functions and are therefore very important for the gut and human health. These gut microorganisms perform a variety of useful functions , such as fermenting unused energy substrates, training the immune system, preventing the growth of harmful pathogenic species, regulating the development of the gut, producing vitamins (such as biotin and vitamin K) and hormones for the human body, development of enteric protection, metabolizing bile acids, sterols, xenobiotics, pharmaco-microbiomics and gut-brain axis. Apart from carbohydrates metabolism, gut microbiota can also metabolize other xenobiotics such as drugs, phytochemicals, and food toxicants. The dysregulation of the gut flora has been correlated with a variety of inflammatory and autoimmune conditions and obesity. Thus, human gut microbiota appears to play a major and significant role in maintaining the human health and disruption of this gut microbiota may lead to different diseased conditions. Factors that disrupt the gut microbiota population include antibiotics, stress, and parasites.The human gut microbiota is dominated by four dominant bacterial phyla viz. Firmicutes, Bacteroidetes, Actinobacteria and Proteobacteria. Most bacteria belong to the Genera Bacteroides, Clostridium, Faecalibacterium, Eubacterium, Ruminococcus, Peptococcus, Peptostreptococcus, and Bifidobacterium. Other genera, such as Escherichia and Lactobacillus, are present to a lesser extent. Species from the genus Bacteroides alone constitute about 30% of all bacteria in the gut, suggesting that this genus is especially important in the functioning of the GI tract. About 99% of the large intestine flora are made up of obligate anaerobes such as Bacteroides and Bifidobacterium. Bifidobacterium and Lactobacillus genera (B. longum, B. breve, B. infantis; L. helveticus, L. rhamnosus, L. plantarum, and L. casei), had the most potential to be useful for certain central nervous system disorders. These GI tract microbes are also used as probiotics in treating the GI tract related medical conditions. These probiotics include the species of Bifidobacterium

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Section: Present Status Of Natural Association Of Human Gut Microbes ...mentioning

confidence: 93%

"Human Gut Microbes Assisted Agricultural Food Production for Better Human Health: A New Concept"

Borkar¹

2023

BJSTR

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Occurrence of antibiotic‐resistant enterobacteria in agricultural foodstuffs

Boehme

Werner²,

Klare

et al. 2004

Molecular Nutrition Food Res

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Antibiotic-resistant bacteria or their corresponding resistance determinants are known to spread from animals to humans via the food chain. We screened 20 vegetable foods for antibiotic-resistant coliform bacteria and enterococci. Isolates were directly selected on antibiotic-containing selective agar (color detection). Thirteen "common vegetables" (tomato, mushrooms, salad) possessed 10(4)-10(7) cfu/g vegetable of coliform bacteria including only few antibiotic-resistant variants (0-10(5) cfu/g). All seven sprout samples showed a some orders of magnitude higher contamination with coliform bacteria (10(7)-10(9) cfu/g) including a remarkable amount of resistant isolates (up to 10(7) cfu/g). Multiple resistances (up to 9) in single isolates were more common in sprout isolates. Resistant bacteria did not originate from sprout seeds. The most common genera among 92 isolates were: 25 Enterobacter spp. (19 E. cloacae), 22 Citrobacter spp. (8 C. freundii), and 21 Klebsiella spp. (9 K. pneumoniae). Most common resistance phenotypes were: tetracycline (43%), streptomycin (37%), kanamycin (26%), chloramphenicol (29%), co-trimoxazol (9%), and gentamicin (4%). The four gentamicin-resistant isolates were investigated in molecular details. Only three (chloramphenicol) resistant, typical plant-associated enterococci were isolated from overnight enrichment cultures. In conclusion, a contribution of sprouts contaminated with multiresistant, Gram-negative enterobacteria to a common gene pool among human commensal and pathogenic bacteria cannot be excluded.

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Enterococcus and its Association with Foodborne Illness

Oprea¹,

Zervos

Infectious Disease

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Detección de Enterococcus resistentes a altos niveles de aminoglucósidos y resistentes a glucopéptidos en Lactuca sativa (lechuga)

Cited by 10 publications

References 9 publications

"Human Gut Microbes Assisted Agricultural Food Production for Better Human Health: A New Concept"

"Human Gut Microbes Assisted Agricultural Food Production for Better Human Health: A New Concept"

Occurrence of antibiotic‐resistant enterobacteria in agricultural foodstuffs

Enterococcus and its Association with Foodborne Illness

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