Bioprotective Potential of Bacteriocinogenic Enterococcus gallinarum Strains Isolated from Some Nigerian Fermented Foods, and of their Bacteriocins

Oladipo, Iyabo C.; Sanni, A.I.; Chakraborty, Writachit; Chakravorty, Somnath; Jana, Sayantan; Rudra, Deep Sankar; Gacchui, Ratan; Swarnakar, Snehasikta

doi:10.33073/pjm-2014-056

Cited by 3 publications

(2 citation statements)

References 24 publications

(19 reference statements)

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“…Enterococcus gallinarum was first isolated from the gut of a chicken. Enterococcus gallinarum is normal flora in human and animal guts [ 1 ]. In recent years, with the increasing use of broad-spectrum antibiotics and invasive medical devices, infections caused by E. gallinarum have gradually increased, and multi-drug resistance has gained more and more attention.…”

Section: Discussionmentioning

confidence: 99%

Enterococcus gallinarum meningitis: a case report and literature review

Zhao

Zheng

2018

BMC Infect Dis

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BackgroundAs an opportunistic pathogen, E. gallinarum mainly leads to nosocomial infections, and it’s multi-drug resistance has gained more and more attention. Central nervous system infections caused by E. gallinarum are rare, but have been reported more often in recent years. The previous cases were generally secondary to neurosurgery, especially ventriculoperitoneal shunts. In recent years, the cases largely occurred in patients with impaired immune function. The patient in our report may have had dual risk factors (immune impairment and an invasive surgical procedure).Case presentationThe patient, a 35-year-old female, was admitted to our hospital for headaches of 3 days duration accompanied by nausea and vomiting for 2 days. The patient had fevers and chills for 3 days before admission; the peak body temperature was 38.5 °C. The patient had a splenectomy in our hospital 2 years earlier for thrombocytopenia and was thought to be immunocompromised. The abnormal findings on physical examination and laboratory testing were as follows: neck stiffness, present; lumbar puncture: pressure, 300 mmH2O; Pandy’s test, positive; white blood cell (WBC) count, 1536 × 106/L; monocyte count, 602 × 106/L; monocyte percentage, 39.2%; multinucleate cell count, 934 × 106/L; multinucleate cell percentage, 60.8%; protein, 1.08 g/L; WBC count, 21.1 × 109/ L; neutrophil percentage, 85.3%; neutrophil count, 20.55 × 109/L; C reactive protein (CRP): 136.4 mg/L; procalcitonin, 6.70 ng/mL. The patient was given meropenem (2.0 g, intravenous infusion, every 8 h) for anti-infection supplemented with other symptomatic support treatments. The patient’s fever and headache had no significant relief.ConclusionsCentral nervous system infections caused by E. gallinarum are rare, but should be suspected, particularly inpatients with impaired immune function or ineffective treatment. Avoiding long-term invasive treatment and improving immunity are helpful to reduce the occurrence of E. gallinarum infections. Early detection and diagnosis, as well as rational antibiotic use, are the keys to achieve satisfactory efficacy.

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Section: Discussionmentioning

confidence: 99%

Enterococcus gallinarum meningitis: a case report and literature review

Zhao

Zheng

2018

BMC Infect Dis

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“…Enterococcus species are members of the family of lactic acid bacteria (LAB) that is widely distributed in nature. They have a history of being used as starter cultures in fermented foods largely due to the unique flavours that they produce, and their health-promoting activities (Oladipo et al, 2014b;Oladipo et al, 2015). Some of them may have antimicrobial activities against food deteriorating microorganisms, making them useful in food preservation (Oladipo et al, 2015).…”

Section: Bacterial Isolatesmentioning

confidence: 99%

Green Synthesis and Antimicrobial Activities of Silver Nanoparticles using Cell Free-Extracts of Enterococcus species

et al. 2017

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Cell-free extracts of six strains of Enterococcus species obtained from fermented foods were used for the green synthesis of silver nanoparticles (AgNPs), which was characterized by UV-Vis spectroscopy, Fourier-transform infrared spectroscopy (FTIR) and transmission electron microscopy (TEM). The biosynthesized AgNPs were dark brown in colour having surface plasmon resonance in the range of 420-442 nm. The spherical shaped AgNPs had sizes of 4-55 nm, whose formations were facilitated by proteins as indicated by the presence of peaks 1,635-1,637 and 3,275-3,313 cm-1 in the FTIR spectra. The energy dispersive x-ray (EDX) showed prominent presence of silver in the AgNPs colloidal solution, while the selected area electron diffraction was typified by the face-centred crystalline nature of silver. The particles inhibited the growth of multi-drug resistant clinical isolates of Escherichia coli, Klebsiella pneumoniae and Proteus vulgaris, and also potentiated the activities of ampicillin, ciprofloxacin and cefuroxime in the AgNPs-antibiotic synergy studies. In addition, the prospective relevance of the particles as nanopreservative in paints was demonstrated with the inhibition of growth of Staphylococcus aureus, Pseudomonas aeruginosa, Aspergillus niger and A. flavus in AgNPs-paint admixture. This report further demonstrates the green synthesis of AgNPs by strains of Enterococcus species.

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