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Probiotics and their antimicrobial effect
Sabina Fijan, 2023, drugi znanstveni članki

Ključne besede: probiotics, antimicrobial, microbiological methods
Objavljeno v DKUM: 16.04.2024; Ogledov: 120; Prenosov: 3
.pdf Celotno besedilo (217,24 KB)
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Single-strain probiotic lactobacilli for the treatment of atopic dermatitis in children : a systematic review and meta-analysis
Sabina Fijan, Nina Kolč, Metka Hrašovec, Gro Jamtvedt, Maja Šikić Pogačar, Dušanka Mičetić-Turk, Uroš Maver, 2023, pregledni znanstveni članek

Opis: Probiotics are known for their positive effects on the gut microbiota. There is growing evidence that the infant gut and skin colonization have a role in the development of the immune system, which may be helpful in the prevention and treatment of atopic dermatitis. This systematic review focused on evaluating the effect of single-strain probiotic lactobacilli consumption on treating children's atopic dermatitis. Seventeen randomized placebo-controlled trials with the primary outcome of the Scoring Atopic Dermatitis (SCORAD) index were included in the systematic review. Clinical trials using single-strain lactobacilli were included. The search was conducted until October 2022 using PubMed, ScienceDirect, Web of Science, Cochrane library and manual searches. The Joanna Briggs Institute appraisal tool was used to assess the quality of the included studies. Meta-analyses and sub meta-analyses were performed using Cochrane Collaboration methodology. Due to different methods of reporting the SCORAD index, only 14 clinical trials with 1124 children were included in the meta-analysis (574 in the single-strain probiotic lactobacilli group and 550 in the placebo group) and showed that single-strain probiotic lactobacilli statistically significantly reduced the SCORAD index compared to the placebo in children with atopic dermatitis (mean difference [MD]: -4.50; 95% confidence interval [CI]: -7.50 to -1.49; Z = 2.93; p = 0.003; heterogeneity I-2 = 90%). The subgroup meta-analysis showed that strains of Limosilactobacillus fermentum were significantly more effective than strains of Lactiplantibacillus plantarum, Lacticaseibacillus paracasei or Lacticaseibacillus rhamnosus. A longer treatment time and younger treatment age statistically significantly reduced symptoms of atopic dermatitis. The result of this systematic review and meta-analysis shows that certain single-strain probiotic lactobacilli are more successful than others in reducing atopic dermatitis severity in children. Therefore, careful consideration to strain selection, treatment time and the age of the treated patients are important factors in enhancing the effectiveness of reducing atopic dermatitis in children when choosing probiotic single-strain lactobacilli.
Ključne besede: probiotics, lactobacilli, atopic dermatitis, children, meta-analysis, systematic review
Objavljeno v DKUM: 16.02.2024; Ogledov: 265; Prenosov: 13
.pdf Celotno besedilo (2,43 MB)
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The multi-strain probiotic OMNi-BiOTiC® Active reduces the duration of acute upper respiratory disease in older people : a double-blind, randomised, controlled clinical trial
Maja Strauss, Dušanka Mičetić-Turk, Mateja Lorber, Maja Šikić Pogačar, Anton Koželj, Ksenija Tušek-Bunc, Sabina Fijan, 2023, izvirni znanstveni članek

Opis: Immunosenescence is the adverse change in the human immune function during aging, leaving older people more prone to an increased risk of infections and morbidity. Acute upper respiratory tract infections (URTIs) are very common among older people, often resulting in continued morbidity and mortality. Therefore, approaches, such as consuming probiotics, that shorten the duration or even reduce the incidence of URTIs in older people are being studied. The aim of this study was to determine the effects of a multi-strain probiotic OMNi-BiOTiC® Active, which contains 11 live probiotic strains, on the incidence, duration, and severity of URTIs in older people. In this randomized double-blinded placebo-controlled study, 95 participants, with an average age of 70.9 years in the probiotic group and 69.6 years in the placebo group, were randomly allocated to two groups: 1010 cfu per day of the multi-strain probiotic intervention OMNi-BiOTiC® Active (49) or placebo (46). The incidence of URTIs in older people after 12 weeks supplementation with OMNi-BiOTiC® showed no statistically significant difference between the two groups (p = 0.5244). However, the duration of the URTI infections was statistically significantly different between the groups (p = 0.011). The participants that consumed the probiotic had an average duration of illness of 3.1 ± 1.6 days, whilst participants that received the placebo had symptoms for an average of 6.0 ± 3.8 days (p = 0.011). Statistically significant differences in lymphocyte counts in both groups after supplementation (p = 0.035 for the probiotic group and p = 0.029 for the placebo group) and between both groups were found (p = 0.009). Statistically significant differences in eosinophil (p = 0.002) and basophil counts (p = 0.001) in the probiotic groups before and after supplementation with probiotics were also found. Supplementation with the multi-strain probiotic OMNi-BiOTiC® Active may benefit older people with URTIs. Larger randomised controlled clinical trials are warranted. Clinical Trial Registration; identifier NCT05879393.
Ključne besede: upper respiratory tract infection, URTI, duration of illness, probiotics, multi-strain, older people, immune function
Objavljeno v DKUM: 27.11.2023; Ogledov: 333; Prenosov: 7
.pdf Celotno besedilo (767,38 KB)

Potential role of probiotics for sustainability in rural India
Kislay Roy, Tomaž Langerholc, Avrelija Cencič, 2010, pregledni znanstveni članek

Opis: Probiotics (greek "for life") have been recognized and explored for over a century, Metchnikoff's pioneering work was converted into commercial reality in the 1950s, and since then many probiotics' benefits have been described. Nowadays they have already found place as a food supplement and as a preventive or curative drug. The term probiotics describes a variety of microorganisms which can colonize the host and have health improving effects on it. Since it is a natural and comparably affordable product even for people with low incomes, it could be introduced into the diet of people living in the Indian rural areas. The biggest obstacles for this are education about their use and technology to prepare them in a convenient form for domestic use. Regular use could improve the quality of live and reduce the dependence on drugs and medical expenses.
Ključne besede: probiotics, sustainability, India
Objavljeno v DKUM: 29.03.2018; Ogledov: 854; Prenosov: 86
.pdf Celotno besedilo (103,25 KB)
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In vitro selection and characterization of new probiotic candidates from table olive microbiota
Cristian Botta, Tomaž Langerholc, Avrelija Cencič, Luca Cocolin, 2014, izvirni znanstveni članek

Opis: To date, only a few studies have investigated the complex microbiota of table olives in order to identify new probiotic microorganisms, even though this food matrix has been shown to be a suitable source of beneficial lactic acid bacteria (LAB). Two hundred and thirty eight LAB, belonging to Lactobacillus plantarum, Lactobacillus pentosus and Leuconostoc mesenteroides species, and isolated from Nocellara Etnea table olives, have been screened in this survey through an in vitro approach. A simulation of transit tolerance in the upper human gastrointestinal tract, together with autoaggregation and hydrophobicity, have been decisive in reducing the number of LAB to 17 promising probiotics. None of the selected strains showed intrinsic resistances towards a broad spectrum of antibiotics and were therefore accurately characterized on an undifferentiated and 3D functional model of the human intestinal tract made up of H4-1 epithelial cells. As far as the potential colonization of the intestinal tract is concerned, a high adhesion ratio was observed for Lb. plantarum O2T60C (over 9%) when tested in the 3D functional model, which closely mimics real intestinal conditions. The stimulation properties towards the epithelial barrier integrity and the in vitro inhibition of L. monocytogenes adhesion and invasion have also been assessed. Lb. plantarum S1T10A and S11T3E enhanced trans-epithelial electrical resistance (TEER) and therefore the integrity of the polarized epithelium in the 3D model. Moreover, S11T3E showed the ability to inhibit L. monocytogenes invasion in the undifferentiated epithelial model. The reduction in L. monocytogenes infection, together with the potential enhancement of barrier integrity and an adhesion ratio that was above the average in the 3D functional model (6.9%) would seem to suggest the Lb. plantarum S11T3E strain as the most interesting candidate for possible in vivo animal and human trials.
Ključne besede: antibiotics, bacteria pathogen, cell metabolism, olives, probiotics, digestion
Objavljeno v DKUM: 19.06.2017; Ogledov: 1415; Prenosov: 347
.pdf Celotno besedilo (1,63 MB)
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