Chen Cheng1,2,3,4,5, Yu He1,2,3,4,5, Sa Xiao1,2,3,4,5, Qing Ai1,2,3,4,5, Jialin Yu6,7,8,9,10,11. 1. Department of Neonatology, Children's Hospital of Chongqing Medical University, Chongqing, People's Republic of China. 2. Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, People's Republic of China. 3. National Clinical Research Center for Child Health and Disorders, Chongqing, People's Republic of China. 4. China International Science and Technology Cooperation base of Child development and Critical Disorders, Chongqing, People's Republic of China. 5. Chongqing Key Laboratory of Pediatrics, Chongqing, People's Republic of China. 6. Department of Neonatology, Children's Hospital of Chongqing Medical University, Chongqing, People's Republic of China. familycheryl0923@gmail.com. 7. Department of Pediatrics, Shenzhen University General Hospital, Shenzhen, Guangdong, People's Republic of China. familycheryl0923@gmail.com. 8. Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, People's Republic of China. familycheryl0923@gmail.com. 9. National Clinical Research Center for Child Health and Disorders, Chongqing, People's Republic of China. familycheryl0923@gmail.com. 10. China International Science and Technology Cooperation base of Child development and Critical Disorders, Chongqing, People's Republic of China. familycheryl0923@gmail.com. 11. Chongqing Key Laboratory of Pediatrics, Chongqing, People's Republic of China. familycheryl0923@gmail.com.
Abstract
Studies on necrotizing enterocolitis (NEC) have not largely focused on enteric viruses. In order to demonstrate the association between enteric viruses and NEC, stool specimens of 51 neonates with NEC and 39 "normal" neonates were collected to detect rotavirus (RV), astrovirus (ASV), sapovirus, enterovirus (EV), adenovirus (ADV), Epstein-Barr virus (EBV), cytomegalovirus (CMV), and human bocavirus (HBoV). Rotavirus A (RVA), ASV, EBV, and ADV were detected in both the NEC and control groups; however, EV and HBoV were detected only in the NEC group and CMV was not detected in either group. ASV was the most common enteric virus, but no significant differences were found between NEC and control groups, as was similarly the case for EBV and EV. The prevalence of ADV and HBoV was higher in the NEC group than in the control group (P = 0.011, P = 0.005, respectively) but RVA showed the opposite trend (P = 0.014). Virus positivity or negativity had no influence on the clinical manifestation of NEC. Conclusion: The roles of different viruses in NEC are not congruent. Some, such as ASV, may be regarded as commensal in neonates, while in NEC patients, the presence of ADV and EBV may be related to severity of disease. What is known: • The etiology of NEC remains unknown. Studies on necrotizing enterocolitis (NEC) have not largely focused on enteric viruses and the conclusions were inconsistent. What is new: • Enteric viruses are common in the gut of neonates, but not all of them are pathogenic. • The existence of ADV and EBV may be related to the severity of NEC.
Studies on necrotizing enterocolitis (NEC) have not largely focused on enteric viruses. In order to demonstrate the association between enteric viruses and NEC, stool specimens of 51 neonates with NEC and 39 "normal" neonates were collected to detect rotavirus (RV), astrovirus (ASV), sapovirus, enterovirus (EV), adenovirus (ADV), Epstein-Barr virus (EBV), cytomegalovirus (CMV), and human bocavirus (HBoV). Rotavirus A (RVA), ASV, EBV, and ADV were detected in both the NEC and control groups; however, EV and HBoV were detected only in the NEC group and CMV was not detected in either group. ASV was the most common enteric virus, but no significant differences were found between NEC and control groups, as was similarly the case for EBV and EV. The prevalence of ADV and HBoV was higher in the NEC group than in the control group (P = 0.011, P = 0.005, respectively) but RVA showed the opposite trend (P = 0.014). Virus positivity or negativity had no influence on the clinical manifestation of NEC. Conclusion: The roles of different viruses in NEC are not congruent. Some, such as ASV, may be regarded as commensal in neonates, while in NEC patients, the presence of ADV and EBV may be related to severity of disease. What is known: • The etiology of NEC remains unknown. Studies on necrotizing enterocolitis (NEC) have not largely focused on enteric viruses and the conclusions were inconsistent. What is new: • Enteric viruses are common in the gut of neonates, but not all of them are pathogenic. • The existence of ADV and EBV may be related to the severity of NEC.
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