Showing posts with label eosinophils. Show all posts
Showing posts with label eosinophils. Show all posts

23 September 2013

Specific probiotics alleviate allergic rhinitis during the birch pollen season

Specific probiotics alleviate allergic rhinitis during the birch pollen season
-Arthur C Ouwehand, Merja Nermes, et al.
World J Gastroenterol. 2009 July 14; 15(26): 3261–3268. doi:  10.3748/wjg.15.3261

Excerpts:
  • Birch pollen allergy was shown to be associated with changes in fecal microbiota composition. The specific combination of probiotics used was shown to prevent the pollen-induced infiltration of eosinophils into the nasal mucosa, and indicated a trend for reduced nasal symptoms.
  • ...our results indicate that gut microbiota are involved in regulating the inflammatory processes also in airway allergies. 
  • The fecal levels of bifidobacteria, clostridia and Bacteroides were reduced at the peak of the birch pollen season. 
  • In conclusion, our study showed that consumption of a combination of L. acidophilus NCFMTM and B. lactis Bl-04 could positively influence markers of respiratory allergy, especially in the mucosae, and also resulted in a tendency for a reduction in reported nasal symptoms.
  • Probiotics may provide an alternative or complementary treatment for pollen allergies. A future study could investigate whether this would lead to a reduced use of antihistamines.

Various effects of different probiotic strains in allergic disorders

Various effects of different probiotic strains in allergic disorders: an update from laboratory and clinical data
-Ozdemir O., Department of Pediatics, Division of Allergy/Immunology, SEMA Research and Training Hospital, Istanbul, Turkey
Clin Exp Immunol. 2010 Jun;160(3):295-304. doi: 10.1111/j.1365-2249.2010.04109.x. Epub 2010 Mar 16.

Excerpts:
  • Enhanced presence of probiotic bacteria in the intestinal microbiota is found to correlate with protection against atopy. 
  • There is also very promising evidence to recommend the addition of probiotics to foods for the prevention and treatment of allergic diseases. 
  • Clinical improvement, especially in allergic rhinitis and immunoglobulin (Ig)E-sensitized (atopic) eczema, has been reported in most of the published studies.  
  • After weaning, the microflora of children begins to resemble that of adults, with
    increased Bacteroides, Veillonella and Fusobacterium.
  • In another study, Lctbs acidophilus and Bfdbm lactis treatments prevented OVA-induced allergic symptoms on the skin and gastrointestinal tract, e.g. eosinophilic infiltration.
Editor's notes:
  • The 'hygiene hypothesis' and its possible connection to increased levels of allergic disease in industrialized countries.
  • Development of infant immune system, its relation to environmental and dietary bacteria, and its maturation into the adult immune system.
  • Probiotics: definition and modes of operation.

20 September 2013

Idiopathic eosinophilic esophagitis is associated with a TH2-type allergic inflammatory response

Idiopathic eosinophilic esophagitis is associated with a TH2-type allergic inflammatory response
-Alex Straumann, MDa, et al.

"IEE is a selective inflammatory response of the esophagus. T cells, IL-5, eosinophils, and IgE-mediated mechanisms appear to be involved, giving rise to the possibility that allergic reactions might play a role in the pathogenesis of the disease."

Eosinophilic esophagitis

  • Eosinophilic esophagitis is an allergic inflammatory condition of the esophagus, and also called allergic oesophagitis. 
  • Symptoms are swallowing difficulty, food impaction, and heartburn. 
  • Eosinophilic oesophagitis (EE) was first described in children but occurs in adults as well. 
  • Food allergy may play a significant role. 
-Eosinophilic esophagitis - Wikipedia, the free encyclopedia