Probiotic News Review August, 2018

I have not been keeping up with my review of the latest news.  It’s time to do some catch-up. This covers news from July and August.

    • The most interesting is this study looking at the bacteriocins (antibiotics produced by bacteria against other bacteria)
      253_2016_7343_fig1_html

Table 1

Number of putative bacteriocin gene cluster identified in 238 complete genomes

Genera

Class I

Class II

Class III

Total

Lanthipeptide I

Lanthipeptide II

Cyclic peptide

Sactipeptide

Glycocin

Lasso peptide

LAP

Aerococcus (1)

0

Bifidobacterium (31)

2

2

4

Carnobacterium (3)

1

6

1

8

Enterococcus (12)

3

1

1

13

7

25

Lactobacillus (59)

16

23

3

86

76

204

Lactococcus (13)

3

7

1

20

1

32

Leuconostoc (8)

1

6

7

Oenococcus (1)

1

1

Pediococcus (3)

1

2

3

Streptococcus (105)

16

22

15

7

5

4

33

388

10

500

Tetragenococcus (1)

1

1

Weisella (1)

0

TOTAL

19

29

41

15

29

4

37

514

97

785

Numbers in parentheses () indicate the number of genomes analyzed per genus

 

  • Small intestine bacteria key in fat uptake, suggests mouse data
  • A Dietary Fiber-Deprived Gut Microbiota Degrades the Colonic Mucus Barrier and Enhances Pathogen Susceptibility [src]
  • Consuming 25 grams of cricket powder per day may alter specific populations of beneficial gut bacteria, a double-blind, randomized crossover trial conducted at Colorado State University indicated. [src]
  • High Dose Vitamin D supplementation alters faecal microbiome and predisposes mice to more severe colitis [src]
  • “Drinking tart cherry juice may improve gut health, says new study (5 days, 8 oz. daily) “[src] NOTE: Difference of impact:
    ” In the human study, two distinct and inverse responses to tart cherry consumption were associated with initial levels of Bacteroides. High-Bacteroides individuals responded with a decrease in Bacteroides and Bifidobacterium, and an increase of Lachnospiraceae, Ruminococcus and Collinsella. Low-Bacteroides individuals responded with an increase in Bacteroides or Prevotella and Bifidobacterium, and a decrease of Lachnospiraceae, Ruminococcus and Collinsella.”
  • Lactobacillus murinus could protect against the damaging effects of a high-salt diet. [src]
  • ” by feeding indigestible starch, involved a species that cannot itself degrade the starch (Bifidobacterium animalis) but cohabits with a species that can (Bifidobacterium pseudolongum). B. pseudolongum has the characteristics of a keystone species in the community because it had low abundance but high ability to perform a critical function, the hydrolysis of resistant starch.” [src]
  • Scientific Analysis Shows Probiotic Use is Associated with Fewer Antibiotic Prescriptions [src]
  • ” the mechanisms that gut bacterial species use to jostle for space and resources and maintain their populations in the face of intense and varied competition. Bacteria have evolved a range of antibiotics, bacteriocins, toxins, and delivery devices to enable interspecies conflict. These interbacterial weapons possess a spectrum of specificities and range from those that target strains of their own species to broad-acting bacteriocides.” [src]
  • Disease
    • “Does Parkinson’s Begin in the Gut? – Scientific American
    • A new study has shown that a single genetic change in a bacterium of the gut microbiome can lead to metabolic diseases such as obesity. [src]
    • Probiotics for Depression | Psychology Today