title: Beneficial effects of long-term consumption of a probiotic combination of Lactobacillus casei Shirota and Bifidobacterium breve Yakult may persist after suspension of therapy in lactose-intolerant patients.
abstract: BACKGROUND
  The efficacy of some probiotic strains for the management of lactose intolerance remains to be established.
  
  
  OBJECTIVE
  To evaluate the effects of a 4-week consumption of a probiotic product containing Lactobacillus casei Shirota and Bifidobacterium breve Yakult (10(7)-10(9) CFU of each strain) on symptoms and breath hydrogen exhalation after a lactose load in lactose-intolerant patients and whether the beneficial results persisted after probiotic discontinuation.
  
  
  METHODS
  Twenty-seven patients with lactose maldigestion and intolerance participated in this study, which comprised 4 hydrogen breath tests: baseline condition (20 g lactose), after lactase ingestion (9000 FCC units), at the end of 4-week probiotic supplementation, and a follow-up test performed 3 months after probiotic discontinuation. For each test, the area under the breath hydrogen concentration vs time curve (AUC(180 min)) was calculated, and symptom scores were recorded.
  
  
  RESULTS
  The probiotic combination significantly reduced symptom scores (P < .01) and breath hydrogen AUC (P = .04) compared with the baseline condition. The comparison with the lactase test showed that symptom scores were similar (P > .05), despite the significantly higher (P = .01) AUC values after probiotic use. In the follow-up test, symptom scores and breath hydrogen AUC values remained similar to those found at the end of probiotic intervention.
  
  
  CONCLUSIONS
  Four-week consumption of a probiotic combination of L casei Shirota and B breve Yakult seems to improve symptoms and decrease hydrogen production intake in lactose-intolerant patients. These effects may persist for at least 3 months after suspension of probiotic consumption.
authors.affiliation: State University of Campinas, Campinas, São Paulo, Brasil.
authors.forename: Camila Casuccio
authors.initials: CC
authors.lastname: Almeida
authors.forename: Sônia Letícia Silva
authors.initials: SL
authors.lastname: Lorena
authors.forename: Célia Regina
authors.initials: CR
authors.lastname: Pavan
authors.forename: Helena Midori Imamura
authors.initials: HM
authors.lastname: Akasaka
authors.forename: Maria Aparecida
authors.initials: MA
authors.lastname: Mesquita
mesh_terms: D000328:Adult; D019540:Area Under Curve; D001644:Bifidobacterium; D001944:Breath Tests; D019587:Dietary Supplements; D004063:Digestion; D045853:Exhalation; D005260:Female; D006801:Humans; D006859:Hydrogen / Q000378:metabolism; D007780:Lacticaseibacillus casei; D007785:Lactose / Q000378:metabolism*; D007787:Lactose Intolerance / Q000150:complications / Q000188:drug therapy* / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D019936:Probiotics / Q000008:administration & dosage / Q000627:therapeutic use*
chemical_list: D006859:Hydrogen; D007785:Lactose