ABSTRACT
OBJECTIVE@#To investigate the risk factors for cow's milk protein allergy (CMPA) among infants through a multicenter clinical study.@*METHODS@#A total of 1 829 infants, aged 1-12 months, who attended the outpatient service of the pediatric department in six hospitals in Shenzhen, China from June 2016 to May 2017 were enrolled as subjects. A questionnaire survey was performed to screen out suspected cases of CMPA. Food avoidance and oral food challenge tests were used to make a confirmed diagnosis of CMPA CMPA. A multivariate logistic regression analysis was used to investigate the risk factors for CMPA.@*RESULTS@#Among the 1 829 infants, 82 (4.48%) were diagnosed with CMPA. The multivariate logistic regression analysis showed that maternal food allergy (OR=4.91, 95%CI: 2.24-10.76, P6 months (OR=0.38, 95%CI: 0.17-0.86, P<0.05) were protective factors.@*CONCLUSIONS@#The introduction of complementary food at an age of <4 months, maternal food allergy, and antibiotic exposure during pregnancy are risk factors for CMPA in infants.
Subject(s)
Animals , Cattle , Female , Humans , Infant , Pregnancy , China , Milk Hypersensitivity , Milk Proteins , Risk Factors , Surveys and QuestionnairesABSTRACT
Objective To explore the relationship between the levels of leptin and leptin receptor in placental and intrauterine growth retardation.Methods Eighty seven newborns were studied .Auxological data(birth weight, length and biceps, triceps, subscapular and iliac skinfold thickness) were obtained and recorded.According to birth weight ,the subjects were divided into :the small for gestational age(SGA)group and the appropriate for gestational age (AGA) group.The levels of leptin and leptin receptor mRNA in 87 placental tissue were assayed by reverse transcription-polymerase chain reaction(RT-PCR).Results 1. The level of leptin receptor mRNA in placental was 0.894?0.291, which was positively related to the birth weight and body fat content (r=0.651,0.581,both P