Why did they have anaphylaxis to apple?

Post on 20-Jul-2015

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 We  confirmed  sensi-za-on  to  nsLTP,  thermally  stable  and  resistant  to  pep-c  diges-on  panallergens  present  in  apple  and  peach  peel.  

Although  peach  is  the  most  frequently  implicated  fruit  in  Rosaceae  anaphylaxis,  both  pa-ents  had  a  more  severe  reac-on  to  apple.    

We  hypothesize   this  may  be  due   to   an   increased   content   of  Mal   d   3   in   both   apple   species   consumed,   or   by   cofactors   that  might  

amplify  an  anaphylac-c  episode  as  fas-ng  and  exercise.    

Natacha  Santos,  Ângela  Gaspar,  Graça  Pires,  Mário  Morais-­‐Almeida  Immunoallergy  Department,  CUF  Descobertas  Hospital,  Lisbon,  Portugal  

Rosaceae  fruits  are  an  important  cause  of  food  allergy  in  

the  Southern  Europe.  

 

Peach   is   the   most   implied   Rosaceae   in   anaphylaxis  

reports.    

We  describe  2  less  usual  case  reports  of  anaphylaxis  to  apple:  

§  29  year-­‐old  woman    

§  Allergic   rhinoconjunc-vi-s   and   asthma,   sensi-zed   to   grass   and  

parietaria  pollen,  mites  and  cat    

§  Immediate   anaphylac(c   reac(on   (generalized   ur-caria   and  

shortness   of   breath)   aTer   ea-ng   an   unpeeled   Granny   smith  

apple,  and  aTer  a  fas(ng  period.  Treated  with  oral  an--­‐histamine  

and   cor-costeroid   and   inhaled   bronchodilator,   the   reac-on   was  

surpassed  in  one  hour.    

§  ATerward,  she  reported  two  episodes  of   labial  angioedema  aTer  

inges-on  of  peach  fruit  and  juice.    

§  18  year-­‐old  male    

§  Allergic  rhini-s  and  asthma,  sensi-zed  to  grass  and  cypress  pollen  and  

to  mites    

§  Immediate  anaphylac(c  reac(on  (generalized  pruritus,  lips,  hands  and  

feet   angioedema   and   shortness   of   breath)   aTer   ea-ng   an   unpeeled  

Golden   delicious   apple   during   a   football   game.   Treated   in   the  

emergency   with   i.m.   an--­‐histamine,   i.v.   cor-costeroid,   inhaled  

bronchodilator  and  oxygen  therapy,  with  full  recovery  in  three  hours.    

§  He  referred  one  previous  episode  of   facial  angioedema  aTer  drinking  

peach  juice.    Fig.  1  –  Results  of  the  prick  tests  with  Bial-­‐Aristegui®  extracts  (PT),  prick  to  prick  with  the  fresh  food  (PPT)  and  specific  IgE  (sIgE)  

Fig.  2  –  Results  of  the  ImmunoCAP  ISAC®  (Phadia)  for  non  specific  Lipid  Transfer  Proteins  (nsLTP)  

PT  (mm)   PPT  (mm)   sIgE  (kU/L)  

apple   (peel)   3x3   7x6   0.48  (pulp)   -­‐   -­‐  

peach   (peel)   5x4   14x6   0.51  (pulp)   -­‐   -­‐  

plum   (peel)   -­‐   -­‐   -­‐  (pulp)  

pear   (peel)   -­‐   -­‐   -­‐  (pulp)  

chery   (peel)   -­‐   -­‐   -­‐  (pulp)  almond   -­‐   n.t.   -­‐  strawberry   -­‐   -­‐   -­‐  rPru  p  3   0.69  

PT  (mm)   PPT  (mm)   sIgE  (kU/L)  

apple   (peel)   3x3   4x3  10.3  

(pulp)   -­‐   -­‐  

peach   (peel)   11x7  n.t   13.2  

(pulp)   4x3  

plum   (peel)   3x3   n.t   8.36  (pulp)  

pear   (peel)   -­‐  5x3  

5.33  (pulp)   -­‐  

chery   (peel)   3x3   n.t   8.0  (pulp)  

almond   3x3   n.t.   0.66  strawberry   -­‐   10x4   1.18  rPru  p  3   8.3  

In  rela-on  to  this  presenta-on,  I  declare  that  there  are  no  conflicts  of  interest.  

n.t.  –  not  tested Peach  Parietaria  

Peach  Hazelnut