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Sun J, Chong J, Zhang J, Ge L. Preterm pigs for preterm birth research: reasonably feasible. Front Physiol 2023; 14:1189422. [PMID: 37520824 PMCID: PMC10374951 DOI: 10.3389/fphys.2023.1189422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 07/07/2023] [Indexed: 08/01/2023] Open
Abstract
Preterm birth will disrupt the pattern and course of organ development, which may result in morbidity and mortality of newborn infants. Large animal models are crucial resources for developing novel, credible, and effective treatments for preterm infants. This review summarizes the classification, definition, and prevalence of preterm birth, and analyzes the relationship between the predicted animal days and one human year in the most widely used animal models (mice, rats, rabbits, sheep, and pigs) for preterm birth studies. After that, the physiological characteristics of preterm pig models at different gestational ages are described in more detail, including birth weight, body temperature, brain development, cardiovascular system development, respiratory, digestive, and immune system development, kidney development, and blood constituents. Studies on postnatal development and adaptation of preterm pig models of different gestational ages will help to determine the physiological basis for survival and development of very preterm, middle preterm, and late preterm newborns, and will also aid in the study and accurate optimization of feeding conditions, diet- or drug-related interventions for preterm neonates. Finally, this review summarizes several accepted pediatric applications of preterm pig models in nutritional fortification, necrotizing enterocolitis, neonatal encephalopathy and hypothermia intervention, mechanical ventilation, and oxygen therapy for preterm infants.
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Affiliation(s)
- Jing Sun
- Chongqing Academy of Animal Sciences, Chongqing, China
- National Center of Technology Innovation for Pigs, Chongqing, China
- Key Laboratory of Pig Industry Sciences, Ministry of Agriculture, Chongqing, China
| | - Jie Chong
- Chongqing Academy of Animal Sciences, Chongqing, China
- National Center of Technology Innovation for Pigs, Chongqing, China
| | - Jinwei Zhang
- Chongqing Academy of Animal Sciences, Chongqing, China
- National Center of Technology Innovation for Pigs, Chongqing, China
- Key Laboratory of Pig Industry Sciences, Ministry of Agriculture, Chongqing, China
| | - Liangpeng Ge
- Chongqing Academy of Animal Sciences, Chongqing, China
- National Center of Technology Innovation for Pigs, Chongqing, China
- Key Laboratory of Pig Industry Sciences, Ministry of Agriculture, Chongqing, China
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Montalva L, Incerti F, Qoshe L, Haffreingue A, Marsac L, Frérot A, Peycelon M, Biran V, Bonnard A. Early laparoscopic-assisted surgery is associated with decreased post-operative inflammation and intestinal strictures in infants with necrotizing enterocolitis. J Pediatr Surg 2023; 58:708-714. [PMID: 36585304 DOI: 10.1016/j.jpedsurg.2022.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 10/12/2022] [Accepted: 11/13/2022] [Indexed: 11/24/2022]
Abstract
INTRODUCTION In 2015, a protocol including early laparoscopy-assisted surgery in the treatment of necrotizing enterocolitis (NEC) was implemented at our institution. Carbon dioxide insufflation during laparoscopy may have an anti-inflammatory effect. We aimed to compare post-operative outcome after early laparoscopy-assisted surgery and classical laparotomy for NEC. MATERIAL AND METHODS Charts of premature infants undergoing surgery for NEC (2012-2021) were reviewed. Cases operated by early laparoscopy-assisted surgery (2015-2021) were compared to infants operated for NEC between 2012 and 2015 (laparotomy-NEC). Outcomes were post-operative CRP, need for reintervention, mortality, and the occurrence of post-NEC intestinal strictures. CRP was measured on the day of surgery (POD-0), 2 days (POD-2), and 7 days after surgery (POD-7). Data were compared using contingency tables for categorical variables and Student t-test or Mann-Whitney test for continuous variables. RESULTS Infants with NEC operated by early laparoscopy (n = 48) and laparotomy (n = 29) were similar in terms of perforation (60% vs 58%, p = 0.99) and POD-0 CRP (139 vs 124 mg/L, p = 0.94). Delay between first signs of NEC and surgery was shorter in the laparoscopy group (3 vs 6 days, p = 0.004). Early laparoscopy was associated with a lower CRP on POD-2 (108 vs 170, p = 0.005) and POD-7 (37 vs 68, p = 0.002), as well as a lower rate of post-operative intestinal stricture (34% vs 61%, p = 0.04). CONCLUSIONS In addition to being safe and feasible in premature infants, early laparoscopic-assisted surgery was associated with decreased NEC-related post-operative inflammation and strictures. A prospective, randomized study is needed in order to evaluate short and long-term effects of laparoscopy in infants with NEC. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- Louise Montalva
- Department of Pediatric General Surgery and Urology, Robert-Debré University Hospital, Assistance Publique-Hôpitaux de Paris, Université de Paris, Paris, France; University Paris-Cité, Paris, France.
| | - Filippo Incerti
- Department of Pediatric General Surgery and Urology, Robert-Debré University Hospital, Assistance Publique-Hôpitaux de Paris, Université de Paris, Paris, France; University Paris-Cité, Paris, France
| | - Livia Qoshe
- Department of Pediatric General Surgery and Urology, Robert-Debré University Hospital, Assistance Publique-Hôpitaux de Paris, Université de Paris, Paris, France; Princeton Internships in Civic Service, Princeton University, Princeton, NJ, USA
| | - Aurore Haffreingue
- Department of Pediatric General Surgery and Urology, Robert-Debré University Hospital, Assistance Publique-Hôpitaux de Paris, Université de Paris, Paris, France
| | - Lucile Marsac
- Department of Pediatric Anesthesia, Intensive Care and Pain Management, Robert-Debré University Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Alice Frérot
- Neonatal Intensive Care Unit, Robert-Debré University Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Matthieu Peycelon
- Department of Pediatric General Surgery and Urology, Robert-Debré University Hospital, Assistance Publique-Hôpitaux de Paris, Université de Paris, Paris, France; University Paris-Cité, Paris, France
| | - Valérie Biran
- Neonatal Intensive Care Unit, Robert-Debré University Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Arnaud Bonnard
- Department of Pediatric General Surgery and Urology, Robert-Debré University Hospital, Assistance Publique-Hôpitaux de Paris, Université de Paris, Paris, France; University Paris-Cité, Paris, France
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GaŁĄzka P, Chrzanowska M, StyczyŃski J. Clinical Spectrum and Outcomes of Neonatal Necrotizing Enterocolitis. In Vivo 2021; 35:585-591. [PMID: 33402513 DOI: 10.21873/invivo.12295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 11/04/2020] [Accepted: 11/10/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND/AIM The objective of the study was analysis of risk factors associated with outcome of necrotizing enterocolitis (NEC) in infants in a single-center study. PATIENTS AND METHODS All consecutive infants hospitalized for NEC over a period of 6 years were retrospectively analyzed for clinical course, infections, treatment and outcome. RESULTS Out of 76 patients, surgical management was applied in 56 (53 exploratory laparotomy, three initial peritoneal drain placement) and in 20 there was only a conservative approach. Segmental intestinal resection was performed in 41 patients. Survival from NEC in our cohort was 79%. We found that independent adverse risk factors of outcome of newborns and infants with NEC were gut perforation, infection, abdominal wall erythema, and development of acute kidney injury. CONCLUSION We underline the value of both surgical and conservative approach with careful management in this cohort of patients.
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Affiliation(s)
- PrzemysŁaw GaŁĄzka
- Department of General and Oncological Surgery for Children and Adolescents Nicolaus Copernicus University in Torun, Ludwik Rydygier Collegium Medicum, Bydgoszcz, Poland; .,Department of Pediatric Hematology and Oncology, Nicolaus Copernicus University in Torun, Ludwik Rydygier Collegium Medicum, Bydgoszcz, Poland
| | - Magdalena Chrzanowska
- Department of General and Oncological Surgery for Children and Adolescents Nicolaus Copernicus University in Torun, Ludwik Rydygier Collegium Medicum, Bydgoszcz, Poland
| | - Jan StyczyŃski
- Department of Pediatric Hematology and Oncology, Nicolaus Copernicus University in Torun, Ludwik Rydygier Collegium Medicum, Bydgoszcz, Poland
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