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Zhuxiao R, Shuo Y, Jiangxue H, Jingjun P, Qi Z, Zhu W, Fang X, Jie Y. Antimicrobial peptide LL37 and regulatory T cell associated with late-onset sepsis in very preterm infants. iScience 2024; 27:109780. [PMID: 38736551 PMCID: PMC11088333 DOI: 10.1016/j.isci.2024.109780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 02/05/2024] [Accepted: 04/15/2024] [Indexed: 05/14/2024] Open
Abstract
Stem cell therapy may prevent late-onset sepsis (LOS) via antimicrobial peptide LL37 secretion and regulatory T cell (Treg) regulation. The early prediction of LOS is still a challenge. This study evaluated whether immunological state of LL37 or Tregs precedes LOS. We firstly analyzed the LL37 level, Treg proportion, and LOS incidence in very preterm infants treated with autologous cord blood mononuclear cells (ACBMNCs) in our previous trial. Then, we constructed a prediction model and built validation cohort. We found ACBMNC intervention reduced the incidence of LOS from 27.3% to 6.9% (p = 0.021). LL37 and Treg abundances were higher in the ACBMNCs group. The nomogram demonstrated that early-life Treg and LL37 characteristics were closely associated with LOS (area under the curve, AUC 0.936), with implications for early prediction and timely clinical management. This composite model was also helpful to evaluate the beneficial effect of ACBMNCs intervention on LOS, thus promoting translational research.
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Affiliation(s)
- Ren Zhuxiao
- Department of Neonatology, Guangdong Women and Children Hospital, Guangzhou, China
- Guangzhou Medical University, Guangdong Neonatal ICU Medical Quality Control Center, National Key Clinical Specialty Construction Unit Guangzhou Medical University, Guangzhou 510000, Guangdong, China
| | - Yang Shuo
- Department of Medical Statistics, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Han Jiangxue
- Department of Neonatology, Guangdong Women and Children Hospital, Guangzhou, China
- Guangzhou Medical University, Guangdong Neonatal ICU Medical Quality Control Center, National Key Clinical Specialty Construction Unit Guangzhou Medical University, Guangzhou 510000, Guangdong, China
| | - Pei Jingjun
- Department of Neonatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhang Qi
- Department of Clinical Genetic Center, Guangdong Women and Children Hospital, Guangzhou Medical University, Guangzhou, China
| | - Wang Zhu
- Department of Neonatology, Guangdong Women and Children Hospital, Guangzhou, China
- Guangzhou Medical University, Guangdong Neonatal ICU Medical Quality Control Center, National Key Clinical Specialty Construction Unit Guangzhou Medical University, Guangzhou 510000, Guangdong, China
| | - Xu Fang
- Department of Neonatology, Guangdong Women and Children Hospital, Guangzhou, China
- Guangzhou Medical University, Guangdong Neonatal ICU Medical Quality Control Center, National Key Clinical Specialty Construction Unit Guangzhou Medical University, Guangzhou 510000, Guangdong, China
| | - Yang Jie
- Department of Neonatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
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Stylianou-Riga P, Boutsikou T, Kouis P, Michailidou K, Kinni P, Sokou R, Iliodromiti Z, Pitsios C, Yiallouros PK, Iacovidou N. Epidemiology, risk factors, clinical presentation and complications of late-onset neonatal sepsis among preterm neonates in Cyprus: a prospective case-control study. BMC Pediatr 2024; 24:50. [PMID: 38229029 DOI: 10.1186/s12887-023-04359-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 10/12/2023] [Indexed: 01/18/2024] Open
Abstract
BACKGROUND Late-onset neonatal sepsis (LOS) is common in preterm neonates, with increasing incidence in recent years. In the present study, we examined the epidemiology, clinical presentation, and complications of LOS in Cyprus and quantified possible risk factors for the development of this condition. METHODS The study subjects were preterm neonates admitted in the Neonatal Intensive Care Unit (NICU) of Archbishop Makarios III Hospital, the only neonatal tertiary centre in Cyprus. A prospective, case-control study was designed, and carried out between April 2017-October 2018. Depending on blood culture results, preterm neonates were classified as "Confirmed LOS": positive blood culture - microorganism isolated and LOS symptoms, "Unconfirmed LOS": negative blood culture and LOS symptoms, and "Controls" group: negative blood culture and absence of LOS symptoms. Comparisons between the 3 groups were performed and the associations between demographic, clinical and treatment characteristics with the likelihood of LOS were assessed using univariate and multivariate logistic regression. RESULTS A total of 350 preterm neonates were included in the study and the incidence of LOS was 41.1%. 79 (22.6%) and 65 (18.6%) neonates were classified as "Confirmed LOS", and "unconfirmed LOS" cases respectively while 206 (58.9%) served as controls. The rate of confirmed LOS ranged from 12.2% in moderate to late preterm neonates to 78.6% in extremely preterm neonates. In the multivariate model, we demonstrated an independent association between LOS and duration of hospitalization (OR: 1.06, 95%CI: 1.01-1.10), duration of ventilation (OR: 1.23, 95%CI: 1.07-1.43) and necrotising enterocolitis (OR: 3.41, 95%CI: 1.13-10.25). CONCLUSIONS The present study highlights the epidemiology of LOS in preterm neonates in Cyprus and its association with the duration of ventilation and hospitalization as well as with necrotizing enterocolitis. Establishment of protocols for the prevention of nosocomial infections during hospitalization in the NICUs and mechanical ventilation of preterm neonates is recommended.
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Affiliation(s)
- Paraskevi Stylianou-Riga
- Neonatal Intensive Care Unit, "Archbishop Makarios III" Hospital, Nicosia, Cyprus.
- Respiratory Physiology Laboratory, Medical School, University of Cyprus Shakolas Educational Center of Clinical, Medicine Palaios Dromos Lefkosias Lemesou 215/6, Aglantzia, Nicosia, 2029, Cyprus.
- Neonatal Department, Medical School, Aretaieio Hospital, National and Kapodistrian University of Athens, Athens, Greece.
| | - Theodora Boutsikou
- Neonatal Department, Medical School, Aretaieio Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Panayiotis Kouis
- Respiratory Physiology Laboratory, Medical School, University of Cyprus Shakolas Educational Center of Clinical, Medicine Palaios Dromos Lefkosias Lemesou 215/6, Aglantzia, Nicosia, 2029, Cyprus
| | | | - Paraskevi Kinni
- Respiratory Physiology Laboratory, Medical School, University of Cyprus Shakolas Educational Center of Clinical, Medicine Palaios Dromos Lefkosias Lemesou 215/6, Aglantzia, Nicosia, 2029, Cyprus
| | - Rozeta Sokou
- Neonatal Department, Medical School, Aretaieio Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Zoi Iliodromiti
- Neonatal Department, Medical School, Aretaieio Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Constantinos Pitsios
- Respiratory Physiology Laboratory, Medical School, University of Cyprus Shakolas Educational Center of Clinical, Medicine Palaios Dromos Lefkosias Lemesou 215/6, Aglantzia, Nicosia, 2029, Cyprus
| | - Panayiotis K Yiallouros
- Respiratory Physiology Laboratory, Medical School, University of Cyprus Shakolas Educational Center of Clinical, Medicine Palaios Dromos Lefkosias Lemesou 215/6, Aglantzia, Nicosia, 2029, Cyprus
| | - Nicoletta Iacovidou
- Neonatal Department, Medical School, Aretaieio Hospital, National and Kapodistrian University of Athens, Athens, Greece
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