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Mathew NE, McCaffrey D, Walker AK, Mallitt KA, Masi A, Morris MJ, Ooi CY. The search for gastrointestinal inflammation in autism: a systematic review and meta-analysis of non-invasive gastrointestinal markers. Mol Autism 2024; 15:4. [PMID: 38233886 PMCID: PMC10795298 DOI: 10.1186/s13229-023-00575-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 11/04/2023] [Indexed: 01/19/2024] Open
Abstract
BACKGROUND Gastrointestinal symptoms and inflammatory gastrointestinal diseases exist at higher rates in the autistic population. It is not clear however whether autism is associated with elevated gastrointestinal inflammation as studies examining non-invasive faecal biomarkers report conflicting findings. To understand the research landscape and identify gaps, we performed a systematic review and meta-analysis of studies measuring non-invasive markers of gastrointestinal inflammation in autistic and non-autistic samples. Our examination focused on faecal biomarkers as sampling is non-invasive and these markers are a direct reflection of inflammatory processes in the gastrointestinal tract. METHODS We extracted data from case-control studies examining faecal markers of gastrointestinal inflammation. We searched PubMed, Embase, Cochrane CENTRAL, CINAHL, PsycINFO, Web of Science Core Collection and Epistemonikos and forward and backwards citations of included studies published up to April 14, 2023 (PROSPERO CRD42022369279). RESULTS There were few studies examining faecal markers of gastrointestinal inflammation in the autistic population, and many established markers have not been studied. Meta-analyses of studies examining calprotectin (n = 9) and lactoferrin (n = 3) were carried out. A total of 508 autistic children and adolescents and 397 non-autistic children and adolescents were included in the meta-analysis of calprotectin studies which found no significant group differences (ROM: 1.30 [0.91, 1.86]). Estimated differences in calprotectin were lower in studies with siblings and studies which did not exclude non-autistic controls with gastrointestinal symptoms. A total of 139 autistic participants and 75 non-autistic controls were included in the meta-analysis of lactoferrin studies which found no significant group differences (ROM: 1.27 [0.79, 2.04]). LIMITATIONS All studies included in this systematic review and meta-analysis examined children and adolescents. Many studies included non-autistic controls with gastrointestinal symptoms which limit the validity of their findings. The majority of studies of gastrointestinal inflammation focused on children under 12 with few studies including adolescent participants. Most studies that included participants aged four or under did not account for the impact of age on calprotectin levels. Future studies should screen for relevant confounders, include larger samples and explore gastrointestinal inflammation in autistic adolescents and adults. CONCLUSIONS There is no evidence to suggest higher levels of gastrointestinal inflammation as measured by calprotectin and lactoferrin are present in autistic children and adolescents at the population level. Preliminary evidence suggests however that higher calprotectin levels may be present in a subset of autistic participants, who may be clinically characterised by more severe gastrointestinal symptoms and higher levels of autistic traits.
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Affiliation(s)
- Nisha E Mathew
- School of Clinical Medicine, Discipline of Paediatrics and Child Health, UNSW Medicine and Health, University of New South Wales, Sydney, 2052, Australia
- Laboratory of ImmunoPsychiatry, Neuroscience Research Australia, Randwick, NSW, 2031, Australia
| | - Delyse McCaffrey
- Laboratory of ImmunoPsychiatry, Neuroscience Research Australia, Randwick, NSW, 2031, Australia
- School of Clinical Medicine, Discipline of Psychiatry and Mental Health, UNSW Medicine and Health, University of New South Wales, Sydney, 2052, Australia
| | - Adam K Walker
- Laboratory of ImmunoPsychiatry, Neuroscience Research Australia, Randwick, NSW, 2031, Australia
- School of Clinical Medicine, Discipline of Psychiatry and Mental Health, UNSW Medicine and Health, University of New South Wales, Sydney, 2052, Australia
- Drug Discovery Biology Theme, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3800, Australia
| | - Kylie-Ann Mallitt
- School of Clinical Medicine, Discipline of Psychiatry and Mental Health, UNSW Medicine and Health, University of New South Wales, Sydney, 2052, Australia
- Sydney School of Public Health, Faculty of Medicine and Health, University of Sydney, Camperdown, NSW, 2006, Australia
| | - Anne Masi
- School of Clinical Medicine, Discipline of Psychiatry and Mental Health, UNSW Medicine and Health, University of New South Wales, Sydney, 2052, Australia
| | - Margaret J Morris
- School of Biomedical Sciences, University of New South Wales, Sydney, 2052, Australia
| | - Chee Y Ooi
- School of Clinical Medicine, Discipline of Paediatrics and Child Health, UNSW Medicine and Health, University of New South Wales, Sydney, 2052, Australia.
- Department of Gastroenterology, Sydney Children's Hospital, High Street, Randwick, NSW, 2031, Australia.
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2
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Szymanska E, Bierla J, Dadalski M, Wierzbicka A, Konopka E, Cukrowska B, Kierkus J. New noninvasive biomarkers of intestinal inflammation and increased intestinal permeability in pediatric inflammatory bowel diseases and their correlation with fecal calprotectin: a pilot study. Minerva Gastroenterol (Torino) 2023; 69:504-510. [PMID: 35436840 DOI: 10.23736/s2724-5985.22.03156-4] [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] [Indexed: 11/08/2022]
Abstract
BACKGROUND Increased intestinal permeability is considered to play a crucial role in the pathogenesis of inflammatory bowel diseases (IBD). Therefore, recently, the use of non-invasive biomarkers in both diagnosis and monitoring IBD is emphasized. The aim of this study was to investigate fecal and serum zonulin and serum I-FABP in pediatric IBD patients and their correlation with fecal calprotectin (FCP). METHODS Seventy-one individuals: 32 Crohn's disease (CD) patients, 33 ulcerative colitis (UC) patients and 6 controls were examined for fecal and serum zonulin and plasma I-FABP. Values were correlated to FCP and to each other for all children included in the study. A stool specimen and blood samples were collected during check-up visits at hospital. Then fecal and serum zonulin, I-FABP and FCP were tested by ELISA Test. Non-parametric statistical tests were used for data analysis. RESULTS The level of fecal zonulin and FCP were higher in IBD patients compared to control group (CG): median for CD - 46.0 (7.0-3854) ng/mL, 252.0 (77.0-1054.2) ug/g; UC - 115.3 (50.7-418.3) ng/mL, 40 (16.0-1883.0) ug/g; CG - 60.8 (31.8-123.0) ng/mL, 41.5 (31.0-323.0) ug/g, respectively, (P<0.05). No statistically significant difference in concentrations of serum zonulin and I-FABP was reported between patients and CG (P=0.55). The only correlation that has been reported was between fecal zonulin and FCP and the strongest one was in CD: CD-R =0.73, UC-R =0.67, All-R =0.67, CG-R =0.65. CONCLUSIONS According to our results it seems that only fecal zonulin may serve as another, next to FCP, biomarker of intestinal damage in IBD. However, both fecal and serum zonulin as well as I-FABP need further studies to assess their usefulness in diagnostics and monitoring in IBD.
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Affiliation(s)
- Edyta Szymanska
- Department of Gastroenterology, Hepatology, Feeding Disorders and Pediatrics, The Children's Memorial Health Institute, Warsaw, Poland -
| | - Joanna Bierla
- Department of Patomorphology, Children's Memorial Health Institute, Warsaw, Poland
| | - Maciej Dadalski
- Department of Gastroenterology, Hepatology, Feeding Disorders and Pediatrics, The Children's Memorial Health Institute, Warsaw, Poland
| | - Aldona Wierzbicka
- Department of Biochemistry and Experimental Medicine, Children's Memorial Health Institute, Warsaw, Poland
| | - Ewa Konopka
- Department of Patomorphology, Children's Memorial Health Institute, Warsaw, Poland
| | - Bożena Cukrowska
- Department of Patomorphology, Children's Memorial Health Institute, Warsaw, Poland
| | - Jaroslaw Kierkus
- Department of Gastroenterology, Hepatology, Feeding Disorders and Pediatrics, The Children's Memorial Health Institute, Warsaw, Poland
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Mamootil D. Pediatric Ulcerative Colitis in Siblings. Cureus 2023; 15:e40829. [PMID: 37489193 PMCID: PMC10363254 DOI: 10.7759/cureus.40829] [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] [Accepted: 06/22/2023] [Indexed: 07/26/2023] Open
Abstract
This case report discusses a nine-year-old female that presented with abdominal pain, diarrhea, and weight loss, suggestive of inflammatory bowel disease (IBD). She had an older brother previously diagnosed with ulcerative colitis (UC), which raised suspicion that she may have the same condition. CT scan of the abdomen/pelvis showed signs of bowel thickening. Stool studies revealed elevated inflammatory markers including lactoferrin and calprotectin, as well as occult blood. She underwent a colonoscopy and rectal biopsy which further confirmed the diagnosis of ulcerative colitis. This article aims to discuss the clinical presentation, role of genetic factors, diagnostic workup, and therapeutic management of ulcerative colitis in the pediatric population.
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Affiliation(s)
- Divya Mamootil
- Internal Medicine, Ascension St. Agnes Hospital, Baltimore, USA
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4
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García-Llorca A, Kararigas G. Sex-Related Effects of Gut Microbiota in Metabolic Syndrome-Related Diabetic Retinopathy. Microorganisms 2023; 11:microorganisms11020447. [PMID: 36838411 PMCID: PMC9967826 DOI: 10.3390/microorganisms11020447] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/28/2023] [Accepted: 02/01/2023] [Indexed: 02/12/2023] Open
Abstract
The metabolic syndrome (MetS) is a complex disease of metabolic abnormalities, including obesity, insulin resistance, hypertension and dyslipidaemia, and it is associated with an increased risk of cardiovascular disease (CVD). Diabetic retinopathy (DR) is the leading cause of vision loss among working-aged adults around the world and is the most frequent complication in type 2 diabetic (T2D) patients. The gut microbiota are a complex ecosystem made up of more than 100 trillion of microbial cells and their composition and diversity have been identified as potential risk factors for the development of several metabolic disorders, including MetS, T2D, DR and CVD. Biomarkers are used to monitor or analyse biological processes, therapeutic responses, as well as for the early detection of pathogenic disorders. Here, we discuss molecular mechanisms underlying MetS, the effects of biological sex in MetS-related DR and gut microbiota, as well as the latest advances in biomarker research in the field. We conclude that sex may play an important role in gut microbiota influencing MetS-related DR.
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The Usefulness of Tissue Calprotectin in Pediatric Crohn’s Disease—A Pilot Study. GASTROINTESTINAL DISORDERS 2023. [DOI: 10.3390/gidisord5010003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Background: Fecal calprotectin (FCP) is a highly sensitive biomarker of intestinal inflammation widely used in diagnostics and monitoring of inflammatory bowel disease (IBD). Immunohistochemical assessment of calprotectin in the bowel mucosa is not a diagnostic standard. Therefore, the aim of this study was to evaluate tissue calprotectin (TCP) as a potential marker providing added insight for pediatric patients with Crohn’s disease (CD). Methods: Fecal and tissue calprotectin were measured in children with CD. The values were correlated with disease activity and histopathological changes of the patients’ endoscopic biopsies. Disease activity was assessed using the Pediatric Crohn’s Disease Activity Index (PCDAI); fecal calprotectin (FCP) was measured with the ELISA test. Immunohistochemical (IHC) staining for calprotectin antigen was performed on the biopsy samples from six bowel segments, and the number of TCP cells was counted per high power field (HPF). Non-parametric statistical tests were used for data analysis. Results: Fifty-seven children with CD with a median age of 10.5 (1–17) years (yrs) were examined for fecal and tissue calprotectin. The patients’ median PCDAI score was 10 (0–63.5), while median FCP was 535 (30–600) μg/g. We observed a correlation between disease activity (PCDAI) and FCP, TCP in inflammatory lesions and in crypts. There was no association either between FCP and TCP or between TCP in epithelium and PCDAI. Conclusion: It seems that IHC detection of calprotectin in bowel mucosa to assess disease behavior may be useful. FCP is a gold-standard biomarker in the diagnosis, monitoring and prognosis of IBD, and its levels correlated well with clinical activity in our study group.
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Shehab AY, Allam AF, Saad AAEK, Osman MM, Ibrahim HS, Moneer EA, Tolba MM. Proposed morbidity markers among Schistosoma mansoni patients. Trop Parasitol 2023; 13:40-45. [PMID: 37415754 PMCID: PMC10321587 DOI: 10.4103/tp.tp_46_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 01/18/2023] [Accepted: 02/02/2023] [Indexed: 07/08/2023] Open
Abstract
Background Fecal calprotectin (FC) and fecal occult blood (FOB) were suggested as potential inflammatory markers for assessing intestinal schistosomiasis morbidity that are conventionally detected through invasive methods. Aim and Objectives The present work aimed to evaluate FC and FOB as morbidity markers of Schistosoma mansoni infection before and after praziquantel treatment. Materials and Methods A total of 205 stool samples (117 schoolchildren and 88 adults) were collected and examined by Kato Katz. A questionnaire enquiring about diarrhea, history of blood in stool, and abdominal pain was designed and applied. Results S. mansoni prevalence rates were 20.5% and 11.36% among children and adults, respectively; the majority of cases had light infection intensity. FC and FOB were studied among 25 cured S. mansoni cases (17 children and 8 adults) pre and one-month post treatment. Before treatment, six and four children of moderate and high S. mansoni infection intensity tested positive for FC and FOB, respectively, all turning negative after treatment. FC showed borderline statistical significance before and after treatment among children. However, all adults tested negative for FC and FOB. Conclusion FC and FOB could be possibly used as morbidity monitoring tools for S. mansoni infection in children with moderate and high infection intensity.
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Affiliation(s)
- Amel Youssef Shehab
- Department of Parasitology, Medical Research Institute, University of Alexandria, Egypt
| | - Amal Farahat Allam
- Department of Parasitology, Medical Research Institute, University of Alexandria, Egypt
| | | | - Mervat Mostafa Osman
- Department of Parasitology, Medical Research Institute, University of Alexandria, Egypt
| | - Heba Said Ibrahim
- Department of Parasitology, Medical Research Institute, University of Alexandria, Egypt
| | - Esraa Abdelhamid Moneer
- Department of Medical Laboratory, Applied Health Sciences Technology, Pharos University, Alexandria, Egypt
| | - Mona Mohamed Tolba
- Department of Parasitology, Medical Research Institute, University of Alexandria, Egypt
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Jendraszak M, Gałęcka M, Kotwicka M, Schwiertz A, Regdos A, Pazgrat-Patan M, Andrusiewicz M. Impact of Biometric Patient Data, Probiotic Supplementation, and Selected Gut Microorganisms on Calprotectin, Zonulin, and sIgA Concentrations in the Stool of Adults Aged 18-74 Years. Biomolecules 2022; 12:biom12121781. [PMID: 36551209 PMCID: PMC9775524 DOI: 10.3390/biom12121781] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/25/2022] [Accepted: 11/28/2022] [Indexed: 12/02/2022] Open
Abstract
Alterations to the intestinal barrier may be involved in the pathogenesis of various chronic diseases. The diagnosis of mucosal barrier disruption has become a new therapeutic target for disease prevention. The aim of this study was to determine whether various patient demographic and biometric data, often not included in diagnostic analyses, may affect calprotectin, zonulin, and sIgA biomarker values. Stool markers' levels in 160 samples were measured colorimetrically. The analysis of twenty key bacteria (15 genera and 5 species) was carried out on the basis of diagnostic tests, including cultures and molecular tests. The concentrations of selected markers were within reference ranges for most patients. The sIgA level was significantly lower in participants declaring probiotics supplementation (p = 0.0464). We did not observe differences in gastrointestinal discomfort in participants. We found significant differences in the sIgA level between the 29-55 years and >55 years age-related intervals groups (p = 0.0191), together with a significant decreasing trend (p = 0.0337) in age-dependent sIgA concentration. We observed complex interdependencies and relationships between their microbiota and the analyzed biomarkers. For correct clinical application, standardized values of calprotectin and sIgA should be determined, especially in elderly patients. We observed a correlation between the composition of the gut community and biomarker levels, although it requires further in-depth analysis.
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Affiliation(s)
- Magdalena Jendraszak
- Chair and Department of Cell Biology, Poznan University of Medical Sciences, Rokietnicka 5D, 60-806 Poznań, Poland
- Correspondence: (M.J.); (M.A.)
| | | | - Małgorzata Kotwicka
- Chair and Department of Cell Biology, Poznan University of Medical Sciences, Rokietnicka 5D, 60-806 Poznań, Poland
| | | | | | | | - Mirosław Andrusiewicz
- Chair and Department of Cell Biology, Poznan University of Medical Sciences, Rokietnicka 5D, 60-806 Poznań, Poland
- Correspondence: (M.J.); (M.A.)
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8
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Estefanía M, Aldana G, Marianela M, Agustina LC, José MM, Fabián P, Sergio G. Lactoferrin affects in vitro and in vivo fertilization and implantation in rats. Biometals 2022; 36:575-585. [PMID: 36326924 DOI: 10.1007/s10534-022-00460-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022]
Abstract
Lactoferrin (LF) is present in the oviduct, reduces in vitro gamete interaction, and affects sperm capacitation parameters in humans. Our aim was to investigate LF actions on further stages of the reproductive process in the Wistar rat model. Motile sperm were obtained from cauda epididymis to assess LF binding by direct immunofluorescence and LF effect on acrosome reaction (AR) using a Coomassie blue staining. After ovarian hyperstimulation of female rats, oocytes were surgically recovered and coincubated with motile sperm and different doses of LF to estimate the in vitro fertilization (IVF) rate. To evaluate the LF effect on pregnancy and embryo implantation, female rats (80 days old) were placed with males and received daily intraperitoneal injections of LF during one complete estrous cycle (pregnancy experiments) or during the first 8 gestational days (implantation experiments). The number of pregnant females and live born pups was recorded after labor. Moreover, the number of implantation sites was registered during the implantation period. LF was able to bind to the sperm head, midpiece, and tail. 10 and 100 μg/ml LF stimulated the AR but reduced the IVF rate. The administration of 100 and 200 mg/kg LF significantly decreased the number of implantation sites and the litter size, whereas 100 mg/kg LF declined the pregnancy rate. The results suggest that LF might interfere with the reproductive process, possibly interfering with gamete interaction or inducing a premature AR; nevertheless, the mechanisms involved are yet to be elucidated.
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Affiliation(s)
- Massa Estefanía
- Area of Clinical Biochemistry, Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531, Rosario, 2000, Santa Fe, Argentina
| | - Gola Aldana
- Area of Clinical Biochemistry, Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531, Rosario, 2000, Santa Fe, Argentina
| | - Moriconi Marianela
- Area of Clinical Biochemistry, Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531, Rosario, 2000, Santa Fe, Argentina
| | - Lo Celso Agustina
- Area of Clinical Biochemistry, Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531, Rosario, 2000, Santa Fe, Argentina
| | - Madariaga María José
- Area of Morphology, Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario Suipacha 531, Rosario, 2000, Santa Fe, Argentina
| | - Pelusa Fabián
- Area of Clinical Biochemistry, Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531, Rosario, 2000, Santa Fe, Argentina
| | - Ghersevich Sergio
- Area of Clinical Biochemistry, Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531, Rosario, 2000, Santa Fe, Argentina.
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Volkers AG, Appleton L, Gearry RB, Frampton CM, de Voogd FAE, Peters van Ton AM, Leach ST, Lemberg DA, Day AS. Fecal Calprotectin, Chitinase 3-Like-1, S100A12 and Osteoprotegerin as Markers of Disease Activity in Children with Crohn’s Disease. GASTROINTESTINAL DISORDERS 2022; 4:180-189. [DOI: 10.3390/gidisord4030017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/10/2023] Open
Abstract
Fecal calprotectin (FC), chitinase 3-like-1 protein (CHI3L1), S100A12 and osteoprotegerin (OPG) are biomarkers of intestinal inflammation. This cross-sectional study aimed to evaluate these biomarkers in a cohort of children with Crohn’s disease (CD) and compare them with other measures of disease activity. Stool samples from children with CD were used to measure FC, CHI3L1, S100A12 and OPG by enzyme-linked immunosorbent assay. Serum inflammatory markers were measured and pediatric CD disease activity index (PCDAI) scores calculated. The simple endoscopic score for CD (SES-CD) was reported for a subgroup who underwent ileocolonoscopy corresponding with the stool samples. Sixty-five children were recruited. Children in clinical remission had lower FC and CHI3L1 levels than those with active disease (FC: 277 vs. 1648 µg/g, p = 0.012; CHI3L1: 23 vs. 227 ng/g, p = 0.013). FC levels differed between patients with clinically active or inactive isolated ileal CD. Although FC and CHI3L1 levels correlated strongly (r = 0.83), none of the fecal markers correlated well with serum markers. Only FC and OPG correlated with SES-CD scores (r = 0.57 and r = 0.48, respectively). In conclusion, FC correlated with both endoscopic and clinical disease activity and was the only biomarker that differentiated between active and inactive ileal CD. CHI3L1 also predicted clinical disease activity and correlated highly with FC. Further investigation of the role of CHI3L1 is required.
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10
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Aggarwal V, Sunder S, Verma SR. Disease-associated dysbiosis and potential therapeutic role of Akkermansia muciniphila, a mucus degrading bacteria of gut microbiome. Folia Microbiol (Praha) 2022; 67:811-824. [PMID: 35596115 PMCID: PMC9122250 DOI: 10.1007/s12223-022-00973-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 04/19/2022] [Indexed: 02/08/2023]
Abstract
The unique functionality of Akkermansia muciniphila in gut microbiota indicates it to be an indispensable microbe for human welfare. The importance of A. muciniphila lies in its potential to convert mucin into beneficial by-products, regulate intestinal homeostasis and maintain gut barrier integrity. It is also known to competitively inhibit other mucin-degrading bacteria and improve metabolic functions and immunity responses in the host. It finds a pivotal perspective in various diseases and their treatment. It has future as a promising probiotic, disease biomarker and therapeutic agent for chronic diseases. Disease-associated dysbiosis of A. muciniphila in the gut microbiome makes it a potential candidate as a biomarker for some diseases and can provide future theranostics by suggesting ways of diagnosis for the patients and best treatment method based on the screening results. Manipulation of A. muciniphila in gut microbiome may help in developing a novel personalized therapeutic action and can be a suitable next generation medicine. However, the actual pathway governing A. muciniphila interaction with hosts remains to be investigated. Also, due to the limited availability of products containing A. muciniphila, it is not exploited to its full potential. The present review aims at highlighting the potential of A. muciniphila in mucin degradation, contribution towards the gut health and host immunity and management of metabolic diseases such as obesity and type 2 diabetes, and respiratory diseases such as cystic fibrosis and COVID-19.
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Affiliation(s)
- Vidushi Aggarwal
- Department of Biotechnology, Delhi Technological University, Delhi, 110042, India
| | - Sushant Sunder
- Department of Biotechnology, Delhi Technological University, Delhi, 110042, India
| | - Smita Rastogi Verma
- Department of Biotechnology, Delhi Technological University, Delhi, 110042, India.
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11
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Jaudszus A, Pfeifer E, Lorenz M, Beiersdorf N, Hipler UC, Zagoya C, Mainz JG. Abdominal Symptoms Assessed With the CFAbd-Score are Associated With Intestinal Inflammation in Patients With Cystic Fibrosis. J Pediatr Gastroenterol Nutr 2022; 74:355-360. [PMID: 34789668 DOI: 10.1097/mpg.0000000000003357] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
OBJECTIVES This prospective study evaluated the relationship between fecal markers of intestinal inflammation and cystic fibrosis (CF)-associated abdominal symptoms. These were assessed using the CFAbd-Score, a CF-specific patient-related outcome measure developed and validated, following FDA guidelines. METHODS In feces from patients with CF (n = 41) and healthy volunteers (n = 27), concentrations of fecal calprotectin (FC), M2-pyruvate kinase (M2-PK), interleukins IL-1β, IL-6, IL-8, and neutrophilic elastase (NE) were measured. Abdominal symptoms during the 2 preceding weeks were recorded using the CFAbd-Score. This patient-reported outcome measure (PROM) for assessment of the multi-organic abdominal involvement in CF includes 28 items in five domains. RESULTS Inflammatory parameters FC, IL-1β, M2-PK, and NE in feces, as well as CFAbd-Scores resulted significantly higher in CF patients than in healthy controls (all P < 0.01). Furthermore, significant differences between both groups were found for pain-symptoms, disorders of bowel movement, impaired quality of life, as well as disorders of eating and appetite. With 83% sensitivity and 74% specificity, FC was the most reliable measure for CF-related intestinal inflammation, which, in the CFAbd-Score, was associated to significantly higher rates of abdominal pain, as well as to general quality of life items such as gastrointestinal-related impaired sleep and frustration. CONCLUSION Using the CFAbd-Score as a CF-specific PROM for identification and quantification of abdominal symptoms revealed that abdominal pain and impaired quality of life are associated with intestinal inflammation in CF.
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Affiliation(s)
- Anke Jaudszus
- Cystic Fibrosis Center for Children and Adults, Jena University Hospital, Jena, Germany
| | - Elena Pfeifer
- Cystic Fibrosis Center for Children and Adults, Jena University Hospital, Jena, Germany
| | - Michael Lorenz
- Cystic Fibrosis Center for Children and Adults, Jena University Hospital, Jena, Germany
| | - Nathalie Beiersdorf
- Cystic Fibrosis Center for Children and Adults, Jena University Hospital, Jena, Germany
| | | | - Carlos Zagoya
- Brandenburg Medical School/Medizinische Hochschule Brandenburg (MHB), University, Pediatric Pulmonology/Cystic Fibrosis, Klinikum Westbrandenburg, Brandenburg an der Havel, Germany
| | - Jochen G Mainz
- Cystic Fibrosis Center for Children and Adults, Jena University Hospital, Jena, Germany.,Brandenburg Medical School/Medizinische Hochschule Brandenburg (MHB), University, Pediatric Pulmonology/Cystic Fibrosis, Klinikum Westbrandenburg, Brandenburg an der Havel, Germany.,Faculty of Health Sciences, joint Faculty of the Brandenburg University of Technology Cottbus-Senftenberg, the Brandenburg Medical School Theodor Fontane and the University of Potsdam, Germany
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12
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Hascoët JM, Chevallier M, Gire C, Brat R, Rozé JC, Norbert K, Chen Y, Hartweg M, Billeaud C. Use of a Liquid Supplement Containing 2 Human Milk Oligosaccharides: The First Double-Blind, Randomized, Controlled Trial in Pre-term Infants. Front Pediatr 2022; 10:858380. [PMID: 35601412 PMCID: PMC9119431 DOI: 10.3389/fped.2022.858380] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 03/17/2022] [Indexed: 11/29/2022] Open
Abstract
There is growing evidence supporting the benefit of human milk oligosaccharides (HMOs) on reducing risk of illnesses and improving immune function in newborn infants, but evidence in pre-term infants is lacking. This randomized, double-blind, placebo-controlled trial (NCT03607942) of pre-term infants evaluated the effects of HMO supplementation on feeding tolerance, growth, and safety in 7 neonatal units in France. Pre-term infants (27-33 weeks' gestation, birth weight <1,700 g) were randomized early after birth to receive HMO supplement (n = 43) [2'-fucosyllactose (2'FL) and lacto-N-neotetraose (LNnT) in a 10:1 ratio (0.374 g/kg body weight/day)] or an isocaloric placebo (n = 43) consisting of only glucose (0.140 g/kg/day) until discharge from the neonatal unit. Anthropometric z-scores were calculated using Fenton growth standards. Primary outcome was feeding tolerance, measured by non-inferiority (NI) in days to reach full enteral feeding (FEF) from birth in HMO vs. placebo group (NI margin = 4+ days). Mean number of days on intervention prior to FEF was 8.9 and 10.3 days in HMO and placebo, respectively. Non-inferiority in time to reach FEF in HMO (vs. placebo) was achieved [LS mean difference (95% CI) = -2.16 (-5.33, 1.00); upper bound of 95% CI < NI margin] in full analysis set and similar for per protocol. Adjusted mean time to reach FEF from birth was 2 days shorter in HMO (12.2) vs. placebo (14.3), although not statistically significant (p = 0.177). There was no difference in weight-for-age z-scores between groups throughout the FEF period until discharge. Length-for-age z-scores were higher in HMO at FEF day 14 [0.29 (0.02, 0.56), p = 0.037] and 21 [0.31 (0.02, 0.61), p = 0.037]. Head circumference-for-age z-score was higher in HMO vs. placebo at discharge [0.42 (0.12, 0.71), p = 0.007]. Occurrence of adverse events (AEs) was similar in both groups and relatively common in this population, whereas 2.3 and 14.3%, respectively, experienced investigator-confirmed, related AEs. HMO supplementation is safe and well-tolerated in pre-term infants. After 9 days of supplementation, the HMO group reached FEF 2 days earlier vs. placebo, although the difference was not statistically significant. In addition, HMO supplementation supports early postnatal growth, which may have a positive impact on long-term growth and developmental outcomes.
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Affiliation(s)
| | | | | | | | - Jean-Christophe Rozé
- Hôpital Femme Enfant Adolescent Néonatologie et Réanimation Pédiatrique, Nantes, France
| | | | - Yipu Chen
- Nestlé Product Technology Center-Nutrition, Vevey, Switzerland
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Ramalingam S, Siamakpour-Reihani S, Bohannan L, Ren Y, Sibley A, Sheng J, Ma L, Nixon AB, Lyu J, Parker DC, Bain J, Muehlbauer M, Ilkayeva O, Kraus VB, Huebner JL, Spitzer T, Brown J, Peled JU, van den Brink M, Gomes A, Choi T, Gasparetto C, Horwitz M, Long G, Lopez R, Rizzieri D, Sarantopoulos S, Chao N, Sung AD. A phase 2 trial of the somatostatin analog pasireotide to prevent GI toxicity and acute GVHD in allogeneic hematopoietic stem cell transplant. PLoS One 2021; 16:e0252995. [PMID: 34170918 PMCID: PMC8232534 DOI: 10.1371/journal.pone.0252995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 05/21/2021] [Indexed: 11/18/2022] Open
Abstract
Background Allogeneic hematopoietic stem cell transplantation (HCT) is an often curative intent treatment, however it is associated with significant gastrointestinal (GI) toxicity and treatment related mortality. Graft-versus-host disease is a significant contributor to transplant-related mortality. We performed a phase 2 trial of the somatostatin analog pasireotide to prevent gastrointestinal toxicity and GVHD after myeloablative allogeneic HCT. Methods Patients received 0.9mg pasireotide every 12 hours from the day prior to conditioning through day +4 after HCT (or a maximum of 14 days). The primary outcomes were grade 3–4 gastrointestinal toxicity through day 30 and acute GVHD. Secondary outcomes were chronic GVHD, overall survival and relapse free survival at one year. Stool and blood samples were collected from before and after HCT for analyses of stool microbiome, local inflammatory markers, and systemic inflammatory and metabolic markers. Results were compared with matched controls. Results Twenty-six patients received pasireotide and were compared to 52 matched contemporaneous controls using a 1–2 match. Grade 3–4 GI toxicity occurred in 21 (81%) patients who received pasireotide and 35 (67%) controls (p = 0.33). Acute GVHD occurred in 15 (58%) patients in the pasireotide group and 28 (54%) controls (p = 0.94). Chronic GVHD occurred in 16 patients in the pasireotide group (64%) versus 22 patients in the control group (42%) (p = 0.12). Overall survival at 1 year in the pasireotide group was 63% (95% CI: 47%,86%) versus 82% (95% CI: 72%, 93%) in controls (log-rank p = 0.006). Relapse-free survival rate at one year was 40% (95% CI: 25%, 65%) in the pasireotide group versus 78% (95% CI: 68%, 91%) in controls (log-rank p = 0.002). After controlling for the effect of relevant covariates, patients in the pasireotide group had attenuated post-HCT loss of microbial diversity. Analysis of systemic inflammatory markers and metabolomics demonstrated feasibility of such analyses in patients undergoing allogeneic HCT. Baseline level and pre-to-post transplant changes in several inflammatory markers (including MIP1a, MIP1b, TNFa, IL8Pro, and IL6) correlated with likelihood of survival. Conclusions Pasireotide did not prevent gastrointestinal toxicity or acute GVHD compared to contemporaneous controls. Pasireotide was associated with numerically higher chronic GVHD and significantly decreased OS and RFS compared to contemporaneous controls. Pasireotide may provide a locally protective effect in the stool microbiome and in local inflammation as measured by stool calprotectin, stool beta-defensin, and stool diversity index.
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Affiliation(s)
- Sendhilnathan Ramalingam
- Division of Hematologic Malignancies and Cellular Therapy, Duke University School of Medicine, Durham, NC, United States of America
- Duke Cancer Institute, Durham, NC, United States of America
| | - Sharareh Siamakpour-Reihani
- Division of Hematologic Malignancies and Cellular Therapy, Duke University School of Medicine, Durham, NC, United States of America
| | - Lauren Bohannan
- Division of Hematologic Malignancies and Cellular Therapy, Duke University School of Medicine, Durham, NC, United States of America
| | - Yi Ren
- Duke Cancer Institute, Durham, NC, United States of America
| | | | - Jeff Sheng
- Duke Cancer Institute, Durham, NC, United States of America
| | - Li Ma
- Department of Statistical Science, Duke University, Durham, NC, United States of America
| | - Andrew B. Nixon
- Department of Medicine, Duke University, Durham, NC, United States of America
| | - Jing Lyu
- Duke Cancer Institute, Durham, NC, United States of America
| | - Daniel C. Parker
- Division of Geriatrics, Duke University School of Medicine, Durham, NC, United States of America
| | - James Bain
- Duke Molecular Physiology Institute and Department of Medicine, Duke University School of Medicine, Duke University, Durham, NC, United States of America
| | - Michael Muehlbauer
- Duke Molecular Physiology Institute and Department of Medicine, Duke University School of Medicine, Duke University, Durham, NC, United States of America
| | - Olga Ilkayeva
- Duke Molecular Physiology Institute and Department of Medicine, Duke University School of Medicine, Duke University, Durham, NC, United States of America
| | - Virginia Byers Kraus
- Duke Molecular Physiology Institute and Department of Medicine, Duke University School of Medicine, Duke University, Durham, NC, United States of America
| | - Janet L. Huebner
- Duke Molecular Physiology Institute and Department of Medicine, Duke University School of Medicine, Duke University, Durham, NC, United States of America
| | - Thomas Spitzer
- Massachusetts General Hospital, Boston, MA, United States of America
- Department of Medicine, Massachusetts General Hospital, Boston, MA, United States of America
| | - Jami Brown
- Massachusetts General Hospital, Boston, MA, United States of America
| | - Jonathan U. Peled
- Adult Bone Marrow Transplantation Service, Memorial Sloan Kettering Cancer Center and Weill Cornell Medical College, New York, NY, United States of America
| | - Marcel van den Brink
- Adult Bone Marrow Transplantation Service, Memorial Sloan Kettering Cancer Center and Weill Cornell Medical College, New York, NY, United States of America
| | - Antonio Gomes
- Adult Bone Marrow Transplantation Service, Memorial Sloan Kettering Cancer Center and Weill Cornell Medical College, New York, NY, United States of America
| | - Taewoong Choi
- Division of Hematologic Malignancies and Cellular Therapy, Duke University School of Medicine, Durham, NC, United States of America
- Duke Cancer Institute, Durham, NC, United States of America
| | - Cristina Gasparetto
- Division of Hematologic Malignancies and Cellular Therapy, Duke University School of Medicine, Durham, NC, United States of America
- Duke Cancer Institute, Durham, NC, United States of America
| | - Mitchell Horwitz
- Division of Hematologic Malignancies and Cellular Therapy, Duke University School of Medicine, Durham, NC, United States of America
- Duke Cancer Institute, Durham, NC, United States of America
| | - Gwynn Long
- Division of Hematologic Malignancies and Cellular Therapy, Duke University School of Medicine, Durham, NC, United States of America
- Duke Cancer Institute, Durham, NC, United States of America
| | - Richard Lopez
- Division of Hematologic Malignancies and Cellular Therapy, Duke University School of Medicine, Durham, NC, United States of America
- Duke Cancer Institute, Durham, NC, United States of America
| | - David Rizzieri
- Division of Hematologic Malignancies and Cellular Therapy, Duke University School of Medicine, Durham, NC, United States of America
- Duke Cancer Institute, Durham, NC, United States of America
| | - Stefanie Sarantopoulos
- Division of Hematologic Malignancies and Cellular Therapy, Duke University School of Medicine, Durham, NC, United States of America
- Duke Cancer Institute, Durham, NC, United States of America
| | - Nelson Chao
- Division of Hematologic Malignancies and Cellular Therapy, Duke University School of Medicine, Durham, NC, United States of America
- Duke Cancer Institute, Durham, NC, United States of America
| | - Anthony D. Sung
- Division of Hematologic Malignancies and Cellular Therapy, Duke University School of Medicine, Durham, NC, United States of America
- Duke Cancer Institute, Durham, NC, United States of America
- * E-mail:
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Dal Pont GC, Belote BL, Lee A, Bortoluzzi C, Eyng C, Sevastiyanova M, Khadem A, Santin E, Farnell YZ, Gougoulias C, Kogut MH. Novel Models for Chronic Intestinal Inflammation in Chickens: Intestinal Inflammation Pattern and Biomarkers. Front Immunol 2021; 12:676628. [PMID: 34054868 PMCID: PMC8158159 DOI: 10.3389/fimmu.2021.676628] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 04/23/2021] [Indexed: 01/30/2023] Open
Abstract
For poultry producers, chronic low-grade intestinal inflammation has a negative impact on productivity by impairing nutrient absorption and allocation of nutrients for growth. Understanding the triggers of chronic intestinal inflammation and developing a non-invasive measurement is crucial to managing gut health in poultry. In this study, we developed two novel models of low-grade chronic intestinal inflammation in broiler chickens: a chemical model using dextran sodium sulfate (DSS) and a dietary model using a high non-starch polysaccharide diet (NSP). Further, we evaluated the potential of several proteins as biomarkers of gut inflammation. For these experiments, the chemical induction of inflammation consisted of two 5-day cycles of oral gavage of either 0.25mg DSS/ml or 0.35mg DSS/ml; whereas the NSP diet (30% rice bran) was fed throughout the experiment. At four times (14, 22, 28 and 36-d post-hatch), necropsies were performed to collect intestinal samples for histology, and feces and serum for biomarkers quantification. Neither DSS nor NSP treatments affected feed intake or livability. NSP-fed birds exhibited intestinal inflammation through 14-d, which stabilized by 36-d. On the other hand, the cyclic DSS-treatment produced inflammation throughout the entire experimental period. Histological examination of the intestine revealed that the inflammation induced by both models exhibited similar spatial and temporal patterns with the duodenum and jejunum affected early (at 14-d) whereas the ileum was compromised by 28-d. Calprotectin (CALP) was the only serum protein found to be increased due to inflammation. However, fecal CALP and Lipocalin-2 (LCN-2) concentrations were significantly greater in the induced inflammation groups at 28-d. This experiment demonstrated for the first time, two in vivo models of chronic gut inflammation in chickens, a DSS and a nutritional NSP protocols. Based on these models we observed that intestinal inflammation begins in the upper segments of small intestine and moved to the lower region over time. In the searching for a fecal biomarker for intestinal inflammation, LCN-2 showed promising results. More importantly, calprotectin has a great potential as a novel biomarker for poultry measured both in serum and feces.
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Affiliation(s)
- Gabriela C Dal Pont
- Department of Poultry Science, Texas A&M Agrilife Research, Texas A&M University, College Station, TX, United States.,Department of Veterinary Science, Federal University of Paraná, Curitiba, Brazil.,Department of Animal Science, Western Parana State University, Marechal C. Rondon, Brazil.,Innovad NV/SA, Essen, Belgium.,Southern Plains Agricultural Research Center, United States Department of Agriculture - Agricultural Research Service (USDA-ARS), College Station, TX, United States
| | - Bruna L Belote
- Department of Veterinary Science, Federal University of Paraná, Curitiba, Brazil
| | - Annah Lee
- Department of Poultry Science, Texas A&M Agrilife Research, Texas A&M University, College Station, TX, United States
| | - Cristiano Bortoluzzi
- Department of Poultry Science, Texas A&M Agrilife Research, Texas A&M University, College Station, TX, United States
| | - Cinthia Eyng
- Department of Animal Science, Western Parana State University, Marechal C. Rondon, Brazil
| | | | | | - Elizabeth Santin
- Department of Veterinary Science, Federal University of Paraná, Curitiba, Brazil
| | - Yuhua Z Farnell
- Department of Poultry Science, Texas A&M Agrilife Research, Texas A&M University, College Station, TX, United States
| | | | - Michael H Kogut
- Southern Plains Agricultural Research Center, United States Department of Agriculture - Agricultural Research Service (USDA-ARS), College Station, TX, United States
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15
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Xiong LJ, Xie XL, Li Y, Deng XZ. Current status of fecal calprotectin as a diagnostic or monitoring biomarker for cow's milk protein allergy in children: a scoping review. World J Pediatr 2021; 17:63-70. [PMID: 32394144 DOI: 10.1007/s12519-020-00364-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Accepted: 03/31/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND There are few approved biomarkers for diagnosis and monitoring of cow's milk protein allergy (CMPA), thus the oral food challenge remains to be the golden diagnostic standard. A potential biomarker is fecal calprotectin, a cytosolic protein, elevating in the presence of intestinal mucosal inflammation. We aimed to undertake a scoping review of the evidence pertaining to the current status of fecal calprotectin used for diagnosis and monitoring CMPA in children, and tried to indicate the aspects needed to be concerned in the future investigations and researches. METHODS A scoping review was performed using the literature searched from PUBMED, EMBASE, and Web of Science Databases until July 2019 on the studies about the application of fecal calprotectin as a biomarker of CMPA in children. Studies were examined according to the inclusion and exclusion criteria. Data were extracted, and a narrative synthesis was conducted to summarize and analyze. RESULTS Thirteen studies with different study design embracing 1238 children were included. The age range was from infants to adolescents. Most children with CMPA presented gastrointestinal symptoms, among which hematochezia was most common. Amount of data suggested that infants with CMPA represented elevated levels of fecal calprotectin, particularly with distinct significance in non-IgE-mediated CMPA groups. Decreases of fecal calprotectin after elimination diet were demonstrated in enrolled studies. However, no matter in the CMPA positive or negative groups, the changes of fecal calprotectin before or after challenge showed no significance. Contradictory results were generated from studies on the role of fecal calprotectin in predicting allergic disease. CONCLUSIONS Available evidence is not sufficient to confirm the utilization of fecal calprotectin both in diagnosis and monitoring of CMPA and predicting for allergic disease. More clinical and bench researches with elaborate design should be conducted and the exact cut-off values of fecal calprotectin in different groups remain to be determined.
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Affiliation(s)
- Li-Jing Xiong
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Sichuan Province, No. 1617, Riyue Avenue, Chengdu 610091, China
| | - Xiao-Li Xie
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Sichuan Province, No. 1617, Riyue Avenue, Chengdu 610091, China.
| | - Yang Li
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Sichuan Province, No. 1617, Riyue Avenue, Chengdu 610091, China
| | - Xiao-Zhi Deng
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Sichuan Province, No. 1617, Riyue Avenue, Chengdu 610091, China
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Gut Microbiota and Depressive Symptoms at the End of CRT for Rectal Cancer: A Cross-Sectional Pilot Study. DEPRESSION RESEARCH AND TREATMENT 2021; 2021:7967552. [PMID: 35003805 PMCID: PMC8731300 DOI: 10.1155/2021/7967552] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 11/24/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND The role of alterations in gut microbiota composition (termed dysbiosis) has been implicated in the pathobiology of depressive symptoms; however, evidence remains limited. This cross-sectional pilot study is aimed at exploring whether depressive symptom scores changed during neoadjuvant chemotherapy and radiation therapy to treat rectal cancer, and if gut microbial taxa abundances and predicted functional pathways correlate with depressive symptoms at the end of chemotherapy and radiation therapy. METHODS 40 newly diagnosed rectal cancer patients (ages 28-81; 23 males) were assessed for depressive symptoms using the Hamilton Rating Scale for Depression (HAM-D) and provided stool samples for 16S rRNA sequencing. Gut microbiome data were analyzed using QIIME2, and correlations and regression analyses were performed in R. RESULTS Participants had significantly higher depressive symptoms at the end as compared to before CRT. The relative abundances of Gemella, Bacillales Family XI, Actinomyces, Streptococcus, Lactococcus, Weissella, and Leuconostocaceae were positively correlated (Spearman's rho = 0.42 to 0.32), while Coprobacter, Intestinibacter, Intestimonas, Lachnospiraceae, Phascolarctobacterium, Ruminiclostridium, Ruminococcaceae (UCG-005 and uncultured), Tyzzerella, and Parasutterella (Spearman's rho = -0.43 to - 0.31) were negatively correlated with HAM-D scores. Of the 14 predicted MetaCyc pathways that correlated with depressive symptom scores at the end of CRT, 11 (79%) were associated with biosynthetic pathways. CONCLUSIONS Significant bacterial taxa and predicted functional pathways correlated with depressive symptoms at the end of chemotherapy and radiation therapy for rectal cancer which warrants further examination and replication of our findings.
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17
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Luo S, Feng J, Zhang Y, Yang X, Ma G, Hu T, Xi Y, Tu X, Wang C, Zhang H, Zou Z, Zhang Y. Mutation analysis of the cystic fibrosis transmembrane conductance regulator gene in Chinese congenital absence of vas deferens patients. Gene 2020; 765:145045. [PMID: 32777524 DOI: 10.1016/j.gene.2020.145045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 08/05/2020] [Accepted: 08/06/2020] [Indexed: 10/23/2022]
Abstract
To find the variant spectrum of the cystic fibrosis transmembrane conductance regulator (CFTR) gene, and evaluate its frequent variants in Chinese congenital absence of vas deferens (CAVD) patients. A total of 276 patients with azoospermia and CAVD (aged from 21 to 44 years old) were investigated from May 2013 to September 2019 in the Third Affiliated Hospital of Sun Yat-sen University. Additionally, 50 healthy, unrelated volunteers were recruited as controls (aged from 21 to 46 years old). The 5'-UTR, exons and their flanking side of the CFTR gene were sequenced by high-throughput sequencing technology. The results were compared with those retrieved from the Ensembl Genome Browser. In addition, all 13 novel variants were further confirmed independently by Sanger sequencing and evaluated in the bioinformatics web servers. A schematic of the variant spectrum of the CFTR gene, including 13 novel variants (12 in CAVD patients, one in the control group), is shown, and the frequent variants in Chinese CAVD patients were 5 T (27.54%), c.-8G > C (7.25%), p.Q1352H (5.98%), and p.I556V (3.08%). 5 T was found to be the most frequent variant. p.Q1352H had a significantly high allelic frequency in CAVD patients (P < 0.05). c.-8G > C and p.I556V had high allelic frequencies but showed no difference between patients and controls (P > 0.05). p.Q1352H is the most common and important missense variant in Chinese patients with CAVD, while the pathological effects of C.-8G > C and p.I556V may be weak after evaluation.
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Affiliation(s)
- Shaoge Luo
- Department of Infertility and Sexual Medicine, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Guangzhou 510630, China
| | - Jiarong Feng
- Department of Infertility and Sexual Medicine, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Guangzhou 510630, China
| | - Yanan Zhang
- Department of Infertility and Sexual Medicine, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Guangzhou 510630, China
| | - Xiaojian Yang
- Department of Infertility and Sexual Medicine, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Guangzhou 510630, China
| | - Gongchao Ma
- Department of Infertility and Sexual Medicine, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Guangzhou 510630, China
| | - Tengfei Hu
- Department of Infertility and Sexual Medicine, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Guangzhou 510630, China
| | - Yu Xi
- Department of Infertility and Sexual Medicine, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Guangzhou 510630, China
| | - Xuchong Tu
- Department of Infertility and Sexual Medicine, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Guangzhou 510630, China
| | - Chunlin Wang
- Department of Andrology, Ruikang Hospital Affiliated to Guangxi University of Traditional Chinese Medicine, No.10, Huadong Road, Nanning 530011, China
| | - Hui Zhang
- Department of Infertility and Sexual Medicine, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Guangzhou 510630, China
| | - Zijun Zou
- Department of Infertility and Sexual Medicine, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Guangzhou 510630, China
| | - Yan Zhang
- Department of Infertility and Sexual Medicine, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Guangzhou 510630, China.
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Analysis of immune, microbiota and metabolome maturation in infants in a clinical trial of Lactobacillus paracasei CBA L74-fermented formula. Nat Commun 2020; 11:2703. [PMID: 32483147 PMCID: PMC7264213 DOI: 10.1038/s41467-020-16582-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 05/05/2020] [Indexed: 12/15/2022] Open
Abstract
Mother’s milk is the best choice for infants nutrition, however when it is not available or insufficient to satisfy the needs of the infant, formula is proposed as an effective substitute. Here, we report the results of a randomized controlled clinical trial (NCT03637894) designed to evaluate the effects of two different dietary regimens (standard formula and Lactobacillus paracasei CBA L74-fermented formula) versus breastfeeding (reference group) on immune defense mechanisms (primary endpoint: secretory IgA, antimicrobial peptides), the microbiota and its metabolome (secondary outcomes), in healthy full term infants according to the type of delivery (n = 13/group). We show that the fermented formula, safe and well tolerated, induces an increase in secretory IgA (but not in antimicrobial peptides) and reduces the diversity of the microbiota, similarly, but not as much as, breastmilk. Metabolome analysis allowed us to distinguish subjects based on their dietary regimen and mode of delivery. Together, these results suggest that a fermented formula favors the maturation of the immune system, microbiota and metabolome. Milk breastfeeding and prebiotic-supplemented formulas have varying effects on the infant gut microbiome. Here, in a randomized controlled clinical trial, the authors investigate the effects of a Lactobacillus paracasei-fermented formula on the immune defense mechanisms, microbiota and its metabolome in full term infants.
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19
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Li M, Liu S, Wang M, Hu H, Yin J, Liu C, Huang Y. Gut Microbiota Dysbiosis Associated with Bile Acid Metabolism in Neonatal Cholestasis Disease. Sci Rep 2020; 10:7686. [PMID: 32377002 PMCID: PMC7203226 DOI: 10.1038/s41598-020-64728-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 04/20/2020] [Indexed: 01/04/2023] Open
Abstract
Neonatal cholestasis disease (NCD) is a complex and easily mis-diagnosed condition. We analyzed microbiota community structure in feces and measured short-chain fatty acids, bile acids (BAs) and liver function of 12 healthy, 13 NCD, and 13 treated infants after diagnosis. Based on 16S rRNA gene amplicon sequencing and gas-chromatographic-mass-spectrometric analysis of secondary BAs, we identified microbial genera and metabolites that associate with abnormal bile secretion. Streptococcus gallolyticus and Parabacteroides distasonis, and Lactobacillus gasseri had higher relative abundance in healthy and NCD infants respectively. Compared to NCD patients, healthy infants had higher LCA, CDCA and GCDCA fecal concentrations. The three microbial species and three secondary bile acids were selected as potential non-invasive combined biomarkers to diagnose NCD. We propose that microbiota-metabolite combined biomarkers could be used for diagnosis of NCD, and this may contribute to improved early clinical diagnosis of NCD in the future.
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Affiliation(s)
- Meng Li
- Department of Pediatrics, the First Affiliated Hospital of Kunming Medical University and Yunnan Key Laboratory of Laboratory Medicine, 650032, Kunming, China
| | - Sixiang Liu
- Department of Gastroenterology, Children's Hospital of Kunming Medical University, 650034, Kunming, China
| | - Mingying Wang
- Department of Gastroenterology, Children's Hospital of Kunming Medical University, 650034, Kunming, China
| | - Hongwei Hu
- Department of Pediatrics, the First Affiliated Hospital of Kunming Medical University and Yunnan Key Laboratory of Laboratory Medicine, 650032, Kunming, China
| | - Jianwen Yin
- Yunnan Center for Disease Control and Prevention, 650100, Kunming, China
| | - Chuanfa Liu
- Kunming Institute of Zoology, Chinese Academy of Sciences, 650000, Kunming, China.
- University of Chinese Academy of Sciences, 100049, Beijing, China.
| | - Yongkun Huang
- Department of Pediatrics, the First Affiliated Hospital of Kunming Medical University and Yunnan Key Laboratory of Laboratory Medicine, 650032, Kunming, China.
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20
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Botticelli A, Vernocchi P, Marini F, Quagliariello A, Cerbelli B, Reddel S, Del Chierico F, Di Pietro F, Giusti R, Tomassini A, Giampaoli O, Miccheli A, Zizzari IG, Nuti M, Putignani L, Marchetti P. Gut metabolomics profiling of non-small cell lung cancer (NSCLC) patients under immunotherapy treatment. J Transl Med 2020; 18:49. [PMID: 32014010 PMCID: PMC6998840 DOI: 10.1186/s12967-020-02231-0] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 01/16/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Despite the efficacy of immune checkpoint inhibitors (ICIs) only the 20-30% of treated patients present long term benefits. The metabolic changes occurring in the gut microbiota metabolome are herein proposed as a factor potentially influencing the response to immunotherapy. METHODS The metabolomic profiling of gut microbiota was characterized in 11 patients affected by non-small cell lung cancer (NSCLC) treated with nivolumab in second-line treatment with anti-PD-1 nivolumab. The metabolomics analyses were performed by GC-MS/SPME and 1H-NMR in order to detect volatile and non-volatile metabolites. Metabolomic data were processed by statistical profiling and chemometric analyses. RESULTS Four out of 11 patients (36%) presented early progression, while the remaining 7 out of 11 (64%) presented disease progression after 12 months. 2-Pentanone (ketone) and tridecane (alkane) were significantly associated with early progression, and on the contrary short chain fatty acids (SCFAs) (i.e., propionate, butyrate), lysine and nicotinic acid were significantly associated with long-term beneficial effects. CONCLUSIONS Our preliminary data suggest a significant role of gut microbiota metabolic pathways in affecting response to immunotherapy. The metabolic approach could be a promising strategy to contribute to the personalized management of cancer patients by the identification of microbiota-linked "indicators" of early progressor and long responder patients.
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Affiliation(s)
- Andrea Botticelli
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, Rome, Italy.,AOU Policlinico Umberto I, Rome, Italy
| | - Pamela Vernocchi
- Unit of Human Microbiome, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Federico Marini
- Department of Chemistry, Sapienza University of Rome, Rome, Italy.,NMR-based Metabolomics Laboratory, Sapienza University of Rome, Rome, Italy
| | | | - Bruna Cerbelli
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Rome, Italy
| | - Sofia Reddel
- Unit of Human Microbiome, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | | | | | | | - Alberta Tomassini
- Department of Chemistry, Sapienza University of Rome, Rome, Italy.,NMR-based Metabolomics Laboratory, Sapienza University of Rome, Rome, Italy
| | | | - Alfredo Miccheli
- NMR-based Metabolomics Laboratory, Sapienza University of Rome, Rome, Italy.,Department of Enviromental Biology, University of Rome, Rome, Italy
| | | | - Marianna Nuti
- Department of Experimental Medicine, University Sapienza, Rome, Italy
| | - Lorenza Putignani
- Unit of Parasitology and Unit of Human Microbiome, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.
| | - Paolo Marchetti
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, Rome, Italy.,AOU Policlinico Umberto I, Rome, Italy.,AOU Sant'Andrea Hospital, Rome, Italy
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21
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Balmus IM, Ilie-Dumitru O, Ciobica A, Cojocariu RO, Stanciu C, Trifan A, Cimpeanu M, Cimpeanu C, Gorgan L. Irritable Bowel Syndrome between Molecular Approach and Clinical Expertise-Searching for Gap Fillers in the Oxidative Stress Way of Thinking. MEDICINA (KAUNAS, LITHUANIA) 2020; 56:E38. [PMID: 31963795 PMCID: PMC7023055 DOI: 10.3390/medicina56010038] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 01/15/2020] [Accepted: 01/15/2020] [Indexed: 02/05/2023]
Abstract
Irritable bowel syndrome (IBS) remains to date an intriguing functional gastrointestinal disorder. Recent studies described a multitude of exogenous factors that work together in IBS, gradually impairing intestinal lining cellular metabolism, including oxidative status balance, with or without a genetic background. Although the current biomarkers support the differentiation between IBS subtypes and other functional gastrointestinal disorder, they are mostly non-specific, referring to clinical, biochemical, and inflammatory imbalances. Since IBS could be also the result of deficient signaling pathways involving both gastrointestinal secretion and neuro-vegetative stimulation, IBS makes no exception from the oxidative hypothesis in the pathological mechanisms. Regarding the oxidative stress implication in IBS, the previous research efforts showed controversial results, with some animal models and patient studies reporting clear oxidative imbalance both on systemic and local levels, but still with no concrete evidence to point to a direct correlation between oxidative stress and IBS. Additionally, it seems that a major role could be also attributed to gut microbiota and their ability to shape our bodies and behaviors. Moreover, the genetic features study in IBS patients showed that several genetic similarities point to a possible correlation of IBS with affective spectrum disorders. Thus, we focus here the discussion on the assumption that IBS could in fact be more likely a stress-related disorder rather than a gastrointestinal one.
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Affiliation(s)
- Ioana-Miruna Balmus
- Department of Interdisciplinary Research in Science, Alexandru Ioan Cuza University of Iasi, Carol I Avenue, No. 11, 700506 Iasi, Romania;
| | - Ovidiu Ilie-Dumitru
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, Carol I Avenue, 20A, 700506 Iasi, Romania (C.C.)
| | - Alin Ciobica
- Department of Research, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, Carol I Avenue, 20A, 700506 Iasi, Romania
| | - Roxana-Oana Cojocariu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, Carol I Avenue, 20A, 700506 Iasi, Romania (C.C.)
| | - Carol Stanciu
- Center of Biomedical Research, Romanian Academy, 8th Carol I Avenue, 700506 Iasi, Romania;
| | - Anca Trifan
- Department of Gastroenterology, Faculty of Medicine, “Gr. T. Popa” University of Medicine and Pharmacy, 16th University Street, 700115 Iasi, Romania
| | - Mirela Cimpeanu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, Carol I Avenue, 20A, 700506 Iasi, Romania (C.C.)
| | - Cristian Cimpeanu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, Carol I Avenue, 20A, 700506 Iasi, Romania (C.C.)
| | - Lucian Gorgan
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, Carol I Avenue, 20A, 700506 Iasi, Romania (C.C.)
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22
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Gut Microbiome: Profound Implications for Diet and Disease. Nutrients 2019; 11:nu11071613. [PMID: 31315227 PMCID: PMC6682904 DOI: 10.3390/nu11071613] [Citation(s) in RCA: 530] [Impact Index Per Article: 106.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/05/2019] [Accepted: 07/11/2019] [Indexed: 02/07/2023] Open
Abstract
The gut microbiome plays an important role in human health and influences the development of chronic diseases ranging from metabolic disease to gastrointestinal disorders and colorectal cancer. Of increasing prevalence in Western societies, these conditions carry a high burden of care. Dietary patterns and environmental factors have a profound effect on shaping gut microbiota in real time. Diverse populations of intestinal bacteria mediate their beneficial effects through the fermentation of dietary fiber to produce short-chain fatty acids, endogenous signals with important roles in lipid homeostasis and reducing inflammation. Recent progress shows that an individual’s starting microbial profile is a key determinant in predicting their response to intervention with live probiotics. The gut microbiota is complex and challenging to characterize. Enterotypes have been proposed using metrics such as alpha species diversity, the ratio of Firmicutes to Bacteroidetes phyla, and the relative abundance of beneficial genera (e.g., Bifidobacterium, Akkermansia) versus facultative anaerobes (E. coli), pro-inflammatory Ruminococcus, or nonbacterial microbes. Microbiota composition and relative populations of bacterial species are linked to physiologic health along different axes. We review the role of diet quality, carbohydrate intake, fermentable FODMAPs, and prebiotic fiber in maintaining healthy gut flora. The implications are discussed for various conditions including obesity, diabetes, irritable bowel syndrome, inflammatory bowel disease, depression, and cardiovascular disease.
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23
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Park Y, Son M, Jekarl DW, Choi HY, Kim SY, Lee S. Clinical Significance of Inflammatory Biomarkers in Acute Pediatric Diarrhea. Pediatr Gastroenterol Hepatol Nutr 2019; 22:369-376. [PMID: 31338312 PMCID: PMC6629592 DOI: 10.5223/pghn.2019.22.4.369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/09/2018] [Accepted: 10/21/2018] [Indexed: 11/24/2022] Open
Abstract
PURPOSE The aim of this study was to evaluate the clinical significance of inflammatory biomarkers in acute infectious diarrhea among children. METHODS Clinical parameters including fever, bacterial and viral etiology based on stool culture and multiplex polymerase chain reaction, and nine biomarkers including C-reactive protein (CRP), erythrocyte sedimentation rate (ESR) and leukocytes in blood and calprotectin, lactoferrin, myeloperoxidase, polymorphonuclear elastase, leukocytes, and occult blood in feces were evaluated in children who were hospitalized due to acute diarrhea without underlying disease. RESULTS A total of 62 patients were included. Among these patients, 33 had fever, 18 showed bacterial infections, and 40 patients were infected with 43 viruses. Of all the biomarkers, CRP was significantly correlated with fever (p<0.001). CRP, ESR, calprotectin, lactoferrin, myeloperoxidase, fecal leukocytes, and occult blood were significantly associated with infection with bacterial pathogens (p<0.001, p=0.04, p=0.03, p=0.003, p=0.02, p=0.03, p=0.002, respectively). The combination of CRP and fecal lactoferrin at their best cut-off values (13.7 mg/L and 22.8 µg/mL, respectively) yielded a sensitivity of 72.2%, and a specificity of 95.5% for bacterial etiology compared with their individual use. CONCLUSION Blood CRP is a useful diagnostic marker for both fever and bacterial etiology in acute pediatric diarrhea. The combination of CRP and fecal lactoferrin yields better diagnostic capability for bacterial etiology than their use alone for acute diarrhea in children without underlying gastrointestinal disease.
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Affiliation(s)
- Yoonseon Park
- Department of Pediatrics, Incheon St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Minji Son
- Department of Pediatrics, Incheon St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Dong Wook Jekarl
- Department of Laboratory Medicine, Incheon St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Hyun Yoo Choi
- Department of Laboratory Medicine, Incheon St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Sang Yong Kim
- Department of Pediatrics, Incheon St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Seungok Lee
- Department of Laboratory Medicine, Incheon St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Incheon, Korea
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24
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Velasco Rodríguez-Belvís M, Viada Bris JF, Plata Fernández C, García-Salido A, Asensio Antón J, Domínguez Ortega G, Muñoz Codoceo RA. Normal fecal calprotectin levels in healthy children are higher than in adults and decrease with age. Paediatr Child Health 2019; 25:286-292. [PMID: 32765164 DOI: 10.1093/pch/pxz070] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 05/02/2019] [Indexed: 12/19/2022] Open
Abstract
Background/Objectives The paediatric reference range of fecal calprotectin (FC) has not been decisively established and previous studies show a wide within-age variability, suggesting that other factors like anthropometric data or type of feeding can influence FC. Our aims were to establish the normal levels of FC in healthy children grouped by age and analyze whether sex, gestational age, birth weight, type of delivery, type of feeding, or anthropometric data influence FC values. Methods This multicentre, cross-sectional, and observational study enrolled healthy donors under 18 years of age who attended their Primary Health Care Centre for their routine Healthy Child Program visits. The exclusion criteria were: (i) immunodeficiency, (ii) autoimmune or (iii) gastrointestinal disease; (iv) medication usage; (v) gastrointestinal symptoms; or (vi) positive finding in the microbiological study. Results We enrolled 395 subjects, mean age was 4.2 years (range 3 days to 16.9 years), and 204 were male. The median FC was 77.0 mcg/g (interquartile range 246). A negative correlation between age and FC was observed (Spearman's rho = -0.603, P<0.01), and none of the other factors analyzed were found to influence FC levels. Conclusions Normal FC values in healthy children (particularly in infants) are higher than those considered to be altered in adults and show a negative correlation with age. It is necessary to reconsider the upper limits of FC levels for paediatric patients according to age, with further studies required to determine other factors that influence FC during infancy.
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Affiliation(s)
| | | | | | - Alberto García-Salido
- Pediatric Intensive Care Unit, Hospital Infantil Universitario Nino Jesus, Madrid, Spain
| | - Julia Asensio Antón
- Clinical Analysis Department, Hospital Infantil Universitario Nino Jesus, Madrid, Spain
| | - Gloria Domínguez Ortega
- Gastroenterology and Nutrition Department, Hospital Infantil Universitario Nino Jesus, Madrid, Spain
| | - Rosa Ana Muñoz Codoceo
- Gastroenterology and Nutrition Department, Hospital Infantil Universitario Nino Jesus, Madrid, Spain
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25
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Bassanini G, Ceccarani C, Borgo F, Severgnini M, Rovelli V, Morace G, Verduci E, Borghi E. Phenylketonuria Diet Promotes Shifts in Firmicutes Populations. Front Cell Infect Microbiol 2019; 9:101. [PMID: 31058098 PMCID: PMC6477998 DOI: 10.3389/fcimb.2019.00101] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 03/25/2019] [Indexed: 12/21/2022] Open
Abstract
Low-phenylalanine diet, the mainstay of treatment for phenylketonuria (PKU), has been shown to increase glycemic index and glycemic load, affecting the availability of substrates for microbial fermentation. Indeed, changes in the PKU gut microbiota compared with healthy controls have been previously reported. In this study we compared the gut microbial communities of children with PKU and with mild hyperphenylalaninemia (MHP, unrestricted diet). For each group, we enrolled 21 children (4–18 years old), for a total dataset of 42 subjects. We assessed dietary intake and performed gut microbiota analysis by sequencing the V3–V4 hypervariable regions of the 16S rRNA gene. Short chain fatty acids (SCFAs) were quantified by gas chromatographic analysis. While alpha-diversity analysis showed no significant differences between PKU and MHP groups, microbial community analysis highlighted a significant separation of the gut microbiota according to both unweighted (p = 0.008) and weighted Unifrac distances (p = 0.033). Major differences were seen within the Firmicutes phylum. Indeed, PKU children were depleted in Faecalibacterium spp. and enriched in Blautia spp. and Clostridium spp (family Lachnospiraceae). We found a divergent response of members of the Firmicutes phylum with respect to daily glycemic index, higher in PKU children. Faecalibacterium prausnitzii, unclassified Ruminococcaceae and, to a lesser extent Roseburia spp. negatively correlated with glycemic index, whereas unclassified Lachnospiraceae were positively associated. Indicator species analysis suggested F. prausnitzii be related to MHP status and Ruminococcus bromii to be associated with PKU. Despite PKU children having a higher vegetable and fiber intake, resembling a vegan diet, their gut microbial profile is different from the microbiota reported in the literature for individuals consuming a high-fiber/low-protein diet. Indeed, beneficial microorganisms, such as F. prausnitzii, considered a biomarker for a healthy status and one of the main butyrate producers, are depleted in PKU gut microbiota. We suggest that both the quality and quantity of carbohydrates ingested participate in determining the observed Firmicutes shifts on the PKU population.
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Affiliation(s)
- Giulia Bassanini
- Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
| | - Camilla Ceccarani
- Department of Health Sciences, Università degli Studi di Milano, Milan, Italy.,Institute of Biomedical Technologies, National Research Council, Segrate, Italy
| | - Francesca Borgo
- Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
| | - Marco Severgnini
- Institute of Biomedical Technologies, National Research Council, Segrate, Italy
| | - Valentina Rovelli
- Department of Pediatrics, San Paolo Hospital, Università degli Studi di Milano, Milan, Italy
| | - Giulia Morace
- Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
| | - Elvira Verduci
- Department of Health Sciences, Università degli Studi di Milano, Milan, Italy.,Department of Pediatrics, San Paolo Hospital, Università degli Studi di Milano, Milan, Italy
| | - Elisa Borghi
- Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
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26
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Furnari M, De Alessandri A, Cresta F, Haupt M, Bassi M, Calvi A, Haupt R, Bodini G, Ahmed I, Bagnasco F, Giannini EG, Casciaro R. The role of small intestinal bacterial overgrowth in cystic fibrosis: a randomized case-controlled clinical trial with rifaximin. J Gastroenterol 2019; 54:261-270. [PMID: 30232597 DOI: 10.1007/s00535-018-1509-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/08/2018] [Indexed: 02/04/2023]
Abstract
BACKGROUND Scientific literature shows a high prevalence of Small Intestinal Bacterial Overgrowth (SIBO) in patients with Cystic Fibrosis (CF). The role of SIBO in nutritional status and gastrointestinal symptoms in CF is not known. Our aim was to study epidemiology and clinical impact of SIBO while assessing the efficacy of rifaximin in eradicating SIBO in CF patients. METHODS Symptoms questionnaire and Glucose Breath Test (GBT) were given to 79 CF patients (median age 19.6 years; 9.2-36.9). Subjects with a positive GBT were enrolled in a randomized controlled trial and received rifaximin 1200 mg for 14 days or no treatment. Questionnaire and GBT were repeated 1 month after the end of treatment or 45 days after the first negative GBT. RESULTS Out of 79 patients, 25 were affected by SIBO (31.6%) with a significant correlation with lower BMI, SDS-BMI (p < 0.05) and serum albumin levels (p < 0.05), independently from pancreas insufficiency. Twenty-three patients took part in the randomized trial, 13 patients (56.5%) in rifaximin group and 10 patients (43.5%) in control group. Eradication rate of SIBO was 9/10 (90%) in rifaximin group and 2/6 (33.3%) in control group (p < 0.05). In the rifaximin group, gastrointestinal symptom improvement was observed in 4/5 patients aged ≤ 14 years and in 0/5 patients aged > 14 years (p < 0.05); in 2/6 patients in the control group. CONCLUSIONS CF patients show a high prevalence of SIBO, related to a poorer nutritional status. Rifaximin therapy is well tolerated and the results are promising in terms of efficacy in eradicating small intestinal bacterial overgrowth in CF.
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Affiliation(s)
- Manuele Furnari
- Department of Internal Medicine, Gastroenterology Unit, Policlinico "San Martino", University of Genoa, Viale Benedetto XV, 6, 16132, Genoa, Italy.
| | | | - Federico Cresta
- Cystic Fibrosis Center, IRCCS G. Gaslini Institute, Genoa, Italy
| | - Maria Haupt
- Cystic Fibrosis Center, IRCCS G. Gaslini Institute, Genoa, Italy
| | - Marta Bassi
- Cystic Fibrosis Center, IRCCS G. Gaslini Institute, Genoa, Italy
| | - Angela Calvi
- Gastroenterology and Pediatric Endoscopy Unit, IRCCS G. Gaslini Institute, Genoa, Italy
| | - Riccardo Haupt
- Epidemiology and Biostatistic Service, IRCCS G. Gaslini Institute, Genoa, Italy
| | - Giorgia Bodini
- Department of Internal Medicine, Gastroenterology Unit, Policlinico "San Martino", University of Genoa, Viale Benedetto XV, 6, 16132, Genoa, Italy
| | - Iftikhar Ahmed
- Department of Gastroenterology, Aldara Hospital and Medical Centre, Riyadh, Kingdom of Saudi Arabia
| | - Francesca Bagnasco
- Epidemiology and Biostatistic Service, IRCCS G. Gaslini Institute, Genoa, Italy
| | - Edoardo Giovanni Giannini
- Department of Internal Medicine, Gastroenterology Unit, Policlinico "San Martino", University of Genoa, Viale Benedetto XV, 6, 16132, Genoa, Italy
| | - Rosaria Casciaro
- Cystic Fibrosis Center, IRCCS G. Gaslini Institute, Genoa, Italy
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27
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Ooi CY, Syed SA, Rossi L, Garg M, Needham B, Avolio J, Young K, Surette MG, Gonska T. Impact of CFTR modulation with Ivacaftor on Gut Microbiota and Intestinal Inflammation. Sci Rep 2018; 8:17834. [PMID: 30546102 PMCID: PMC6292911 DOI: 10.1038/s41598-018-36364-6] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 11/09/2018] [Indexed: 12/16/2022] Open
Abstract
Cystic fibrosis (CF) is caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. Next to progressive airway disease, CF is also associated with intestinal inflammation and dysbiosis. Ivacaftor, a CFTR potentiator, has improved pulmonary and nutritional status but its effects on the intestinal microbiota and inflammation are unclear. Hence, we assessed the changes on the intestinal microbial communities (16S rRNA variable 3 gene region) and inflammatory markers (calprotectin and M2-pyruvate kinase [M2-PK]) in 16 CF individuals (8 children and 8 adults) before and after (median 6.1 months) ivacaftor. Stool calprotectin significantly decreased following ivacaftor (median [IQR]: 154.4 [102.1–284.2] vs. 87.5 [19.5–190.2] mg/kg, P = 0.03). There was a significant increase in Akkermansia with ivacaftor. Increased abundance of Akkermansia was associated with normal stool M2-PK concentrations, and decreased abundances of Enterobacteriaceae correlated with decreased stool calprotectin concentrations. In summary, changes in the gut microbiome and decrease in intestinal inflammation was associated with Ivacaftor treatment among individuals with CF carrying at least one gating CFTR mutation. Thus, CFTR-modifying therapy may adequately improve the aberrant pathophysiology and milieu of the CF gut to favor a more healthy microbiota, which in turn reduces intestinal inflammation.
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Affiliation(s)
- Chee Y Ooi
- School of Women's and Children's Health, Medicine, The University of New South Wales, Sydney, NSW, Australia. .,Molecular and Integrative Cystic Fibrosis (miCF) Research Centre, Sydney Children's Hospital, Randwick, NSW, Australia. .,Department of Gastroenterology, Sydney Children's Hospital, Randwick, NSW, Australia.
| | - Saad A Syed
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada.,Department of Biochemistry & Biomedical Sciences, McMaster University, Hamilton, ON, Canada.,Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON, Canada
| | - Laura Rossi
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada.,Department of Biochemistry & Biomedical Sciences, McMaster University, Hamilton, ON, Canada.,Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON, Canada
| | - Millie Garg
- School of Women's and Children's Health, Medicine, The University of New South Wales, Sydney, NSW, Australia
| | - Bronwen Needham
- School of Women's and Children's Health, Medicine, The University of New South Wales, Sydney, NSW, Australia
| | - Julie Avolio
- Department of Paediatrics, Division of Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Kelsey Young
- Department of Paediatrics, Division of Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Michael G Surette
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada.,Department of Biochemistry & Biomedical Sciences, McMaster University, Hamilton, ON, Canada.,Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON, Canada
| | - Tanja Gonska
- Department of Paediatrics, Division of Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children, Toronto, Ontario, Canada.,Translational Medicine, Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada
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28
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Bingula R, Filaire M, Radosevic-Robin N, Berthon JY, Bernalier-Donadille A, Vasson MP, Thivat E, Kwiatkowski F, Filaire E. Characterisation of gut, lung, and upper airways microbiota in patients with non-small cell lung carcinoma: Study protocol for case-control observational trial. Medicine (Baltimore) 2018; 97:e13676. [PMID: 30558074 PMCID: PMC6320062 DOI: 10.1097/md.0000000000013676] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 11/22/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Several studies have confirmed the important role of the gut microbiota in the regulation of immune functions and its correlation with different diseases, including cancer. While brain-gut and liver-gut axes have already been demonstrated, the existence of a lung-gut axis has been suggested more recently, with the idea that changes in the gut microbiota could affect the lung microbiota, and vice versa. Likewise, the close connection between gut microbiota and cancer of proximal sites (intestines, kidneys, liver, etc.) is already well established. However, little is known whether there is a similar relation when looking at world's number one cause of death from cancer-lung cancer. OBJECTIVE Firstly, this study aims to characterise the gut, lung, and upper airways (UAs) microbiota in patients with non-small cell lung cancer (NSCLC) treated with surgery or neoadjuvant chemotherapy plus surgery. Secondly, it aims to evaluate a chemotherapy effect on site-specific microbiota and its influence on immune profile. To our knowledge, this is the 1st study that will analyse multi-site microbiota in NSCLC patients along with site-specific immune response. METHODS The study is a case-controlled observational trial. Forty NSCLC patients will be divided into 2 groups depending on their anamnesis: Pchir, patients eligible for surgery, or Pct-chir, patients eligible for neoadjuvant chemotherapy plus surgery. Composition of the UAs (saliva), gut (faeces), and lung microbiota (from broncho-alveolar lavage fluid (BALF) and 3 lung pieces: "healthy" tissue distal to tumour, peritumoural tissue and tumour itself) will be analysed in both groups. Immune properties will be evaluated on the local (evaluation of the tumour immune cell infiltrate, tumour classification and properties, immune cell phenotyping in BALF; human neutrophil protein (HNP) 1-3, β-defensin 2, and calprotectin in faeces) and systemic level (blood cytokine and immune cell profile). Short-chain fatty acids (SCFAs) (major products of bacterial fermentation with an effect on immune system) will be dosed in faecal samples. Other factors such as nutrition and smoking status will be recorded for each patient. We hypothesise that smoking status and tumour type/grade will be major factors influencing both microbiota and immune/inflammatory profile of all sampling sites. Furthermore, due to non-selectivity, the same effect is expected from chemotherapy.
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Affiliation(s)
- Rea Bingula
- University of Clermont-Auvergne, UMR 1019 INRA-UCA, Human Nutrition Unit (UNH), Clermont-Ferrand
| | - Marc Filaire
- University of Clermont-Auvergne, UMR 1019 INRA-UCA, Human Nutrition Unit (UNH), Clermont-Ferrand
- Centre Jean Perrin, Thoracic Surgery Department, Clermont-Ferrand
| | - Nina Radosevic-Robin
- INSERM U1240, University Clermont Auvergne, Centre Jean Perrin, Department of Pathology, Clermont-Ferrand
| | | | | | - Marie-Paule Vasson
- University of Clermont-Auvergne, UMR 1019 INRA-UCA, Human Nutrition Unit (UNH), Clermont-Ferrand
- Centre Jean Perrin, CHU Gabriel-Montpied, Clinical Nutrition Unit, Clermont-Ferrand
| | - Emilie Thivat
- University of Clermont-Auvergne, INSERM U1240 Imagerie Moléculaire et Stratégies Théranostiques, Clermont-Ferrand
- Centre Jean Perrin, Clinical Research Department, Clermont-Ferrand, France
| | - Fabrice Kwiatkowski
- University of Clermont-Auvergne, INSERM U1240 Imagerie Moléculaire et Stratégies Théranostiques, Clermont-Ferrand
- Centre Jean Perrin, Clinical Research Department, Clermont-Ferrand, France
| | - Edith Filaire
- University of Clermont-Auvergne, UMR 1019 INRA-UCA, Human Nutrition Unit (UNH), Clermont-Ferrand
- Greentech SA, Biopole Clermont-Limagne, Saint-Beauzire
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Goossens E, Debyser G, Callens C, De Gussem M, Dedeurwaerder A, Devreese B, Haesebrouck F, Flügel M, Pelzer S, Thiemann F, Ducatelle R, Van Immerseel F. Elevated faecal ovotransferrin concentrations are indicative for intestinal barrier failure in broiler chickens. Vet Res 2018; 49:51. [PMID: 29925427 PMCID: PMC6011339 DOI: 10.1186/s13567-018-0548-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 06/04/2018] [Indexed: 02/06/2023] Open
Abstract
Intestinal health is critically important for the welfare and performance of poultry. Enteric diseases that cause gut barrier failure result in high economic losses. Up till now there is no reliable faecal marker to measure gut barrier failure under field conditions. Therefore, the aim of the present study was to identify a faecal protein marker for diminished intestinal barrier function due to enteric diseases in broilers. To assess this, experimental necrotic enteritis and coccidiosis in broilers were used as models for gut barrier failure. Ovotransferrin was identified as a marker for gut barrier failure using a proteomics approach on samples from chickens with necrotic enteritis. These results were confirmed via ELISA on samples derived from both necrotic enteritis and coccidiosis trials, where faecal ovotransferrin levels were significantly correlated with the severity of gut barrier failure caused by either coccidiosis or necrotic enteritis. This indicates that faecal ovotransferrin quantification may represent a valuable tool to measure gut barrier failure caused by enteric pathogens.
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Affiliation(s)
- Evy Goossens
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Griet Debyser
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, K.L. Ledeganckstraat 35, 9000, Ghent, Belgium
| | - Chana Callens
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | | | | | - Bart Devreese
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, K.L. Ledeganckstraat 35, 9000, Ghent, Belgium
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Monika Flügel
- Evonik Nutrition & Care GmbH, 33790, Halle, Westfalen, Germany
| | - Stefan Pelzer
- Evonik Nutrition & Care GmbH, 33790, Halle, Westfalen, Germany
| | - Frank Thiemann
- Evonik Nutrition & Care GmbH, 33790, Halle, Westfalen, Germany
| | - Richard Ducatelle
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Filip Van Immerseel
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium.
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Diagnostic Markers for Nonspecific Inflammatory Bowel Diseases. DISEASE MARKERS 2018; 2018:7451946. [PMID: 29991970 PMCID: PMC6016179 DOI: 10.1155/2018/7451946] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 04/18/2018] [Accepted: 05/16/2018] [Indexed: 12/13/2022]
Abstract
The nonspecific inflammatory bowel diseases (IBD) represent a heterogeneous group of chronic inflammatory disorders of the gastrointestinal tract, and Leśniowski-Crohn's disease (CD) and ulcerative colitis (UC) are among the two major clinical forms. Despite the great progress in understanding the pathogenesis of these diseases, their etiology remains unclear. Genetic, immune, and environmental factors are thought to play a key role. The correct diagnosis of nonspecific inflammatory bowel diseases as well as the determination of disease activity, risk stratification, and prediction of response to therapy still relies on a multidisciplinary approach based on clinical, laboratory, endoscopic, and histologic examination. However, considerable effort has been devoted to the development of an accurate panel of noninvasive biomarkers that have increased diagnostic sensitivity and specificity. Laboratory biomarkers useful in differentiating IBD with functional disorders and in evaluating disease activity, prognosis, and treatment selection for IBD are presented in this study.
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Ducatelle R, Goossens E, De Meyer F, Eeckhaut V, Antonissen G, Haesebrouck F, Van Immerseel F. Biomarkers for monitoring intestinal health in poultry: present status and future perspectives. Vet Res 2018; 49:43. [PMID: 29739469 PMCID: PMC5941335 DOI: 10.1186/s13567-018-0538-6] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 04/23/2018] [Indexed: 02/07/2023] Open
Abstract
Intestinal health is determined by host (immunity, mucosal barrier), nutritional, microbial and environmental factors. Deficiencies in intestinal health are associated with shifts in the composition of the intestinal microbiome (dysbiosis), leakage of the mucosal barrier and/or inflammation. Since the ban on growth promoting antimicrobials in animal feed, these dysbiosis-related problems have become a major issue, especially in intensive animal farming. The economical and animal welfare consequences are considerable. Consequently, there is a need for continuous monitoring of the intestinal health status, particularly in intensively reared animals, where the intestinal function is often pushed to the limit. In the current review, the recent advances in the field of intestinal health biomarkers, both in human and veterinary medicine are discussed, trying to identify present and future markers of intestinal health in poultry. The most promising new biomarkers will be stable molecules ending up in the feces and litter that can be quantified, preferably using rapid and simple pen-side tests. It is unlikely, however, that a single biomarker will be sufficient to follow up all aspects of intestinal health. Combinations of multiple biomarkers and/or metabarcoding, metagenomic, metatranscriptomic, metaproteomic and metabolomic approaches will be the way to go in the future. Candidate biomarkers currently are being investigated by many research groups, but the validation will be a major challenge, due to the complexity of intestinal health in the field.
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Affiliation(s)
- Richard Ducatelle
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium.
| | - Evy Goossens
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Fien De Meyer
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Venessa Eeckhaut
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Gunther Antonissen
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium.,Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Filip Van Immerseel
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
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Shores DR, Everett AD. Children as Biomarker Orphans: Progress in the Field of Pediatric Biomarkers. J Pediatr 2018; 193:14-20.e31. [PMID: 29031860 PMCID: PMC5794519 DOI: 10.1016/j.jpeds.2017.08.077] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 08/04/2017] [Accepted: 08/30/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Darla R Shores
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, MD.
| | - Allen D Everett
- Division of Cardiology, Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, MD
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Non-invasive identification of protein biomarkers for early pregnancy diagnosis in the cheetah (Acinonyx jubatus). PLoS One 2017; 12:e0188575. [PMID: 29236714 PMCID: PMC5728495 DOI: 10.1371/journal.pone.0188575] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 11/09/2017] [Indexed: 11/19/2022] Open
Abstract
Approximately 80% of cheetahs living in typical zoological collections never reproduce. In more than 60% of breedings, the female is confirmed to ovulate, but parturition fails to occur. It is unknown if these non-pregnant intervals of elevated progesterone (deemed luteal phases) are conception failures or a pregnancy terminating in embryonic/fetal loss. There have been recent advances in metabolic profiling and proteome analyses in many species with mass spectrometry used to identify ‘biomarkers’ and mechanisms indicative of specific physiological states (including pregnancy). Here, we hypothesized that protein expression in voided cheetah feces varied depending on pregnancy status. We: 1) identified the expansive protein profile present in fecal material of females; and 2) isolated proteins that may be candidates playing a role in early pregnancy establishment and diagnosis. Five hundred and seventy unique proteins were discovered among samples from pregnant (n = 8), non-pregnant, luteal phase (n = 5), and non-ovulatory control (n = 5) cheetahs. Four protein candidates were isolated that were significantly up-regulated and two were down-regulated in samples from pregnant compared to non-pregnant or control counterparts. One up-regulated candidate, immunoglobulin J chain (IGJ; an important component of the secretory immune system) was detected using a commercially available antibody via immunoblotting. Findings revealed that increased IGJ abundance could be used to detect pregnancy successfully in >80% of 23 assessed females within 4 weeks after mating. The discovery of a novel fecal pregnancy marker improves the ability to determine reproductive, especially gestational, status in cheetahs managed in an ex situ insurance and source population.
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DALLAS DAVIDC, SANCTUARY MEGANR, QU YUNYAO, KHAJAVI SHABNAMHAGHIGHAT, VAN ZANDT ALEXANDRIAE, DYANDRA MELISSA, FRESE STEVENA, BARILE DANIELA, GERMAN JBRUCE. Personalizing protein nourishment. Crit Rev Food Sci Nutr 2017; 57:3313-3331. [PMID: 26713355 PMCID: PMC4927412 DOI: 10.1080/10408398.2015.1117412] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Proteins are not equally digestible-their proteolytic susceptibility varies by their source and processing method. Incomplete digestion increases colonic microbial protein fermentation (putrefaction), which produces toxic metabolites that can induce inflammation in vitro and have been associated with inflammation in vivo. Individual humans differ in protein digestive capacity based on phenotypes, particularly disease states. To avoid putrefaction-induced intestinal inflammation, protein sources, and processing methods must be tailored to the consumer's digestive capacity. This review explores how food processing techniques alter protein digestibility and examines how physiological conditions alter digestive capacity. Possible solutions to improving digestive function or matching low digestive capacity with more digestible protein sources are explored. Beyond the ileal digestibility measurements of protein digestibility, less invasive, quicker and cheaper techniques for monitoring the extent of protein digestion and fermentation are needed to personalize protein nourishment. Biomarkers of protein digestive capacity and efficiency can be identified with the toolsets of peptidomics, metabolomics, microbial sequencing and multiplexed protein analysis of fecal and urine samples. By monitoring individual protein digestive function, the protein component of diets can be tailored via protein source and processing selection to match individual needs to minimize colonic putrefaction and, thus, optimize gut health.
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Affiliation(s)
- DAVID C. DALLAS
- Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States
- Foods for Health Institute, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States
| | - MEGAN R. SANCTUARY
- Foods for Health Institute, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States
- Department of Nutrition, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States
| | - YUNYAO QU
- Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States
| | - SHABNAM HAGHIGHAT KHAJAVI
- Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States
- Department of Food Science and Technology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - ALEXANDRIA E. VAN ZANDT
- Department of Nutrition, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States
| | - MELISSA DYANDRA
- Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States
| | - STEVEN A. FRESE
- Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States
- Foods for Health Institute, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States
| | - DANIELA BARILE
- Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States
- Foods for Health Institute, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States
| | - J. BRUCE GERMAN
- Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States
- Foods for Health Institute, University of California, Davis, One Shields Avenue, Davis, CA 95616, United States
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Normative Fecal Calprotectin Concentrations in Guatemalan Preschoolers Are High Relative to Children Reported Elsewhere. J Pediatr Gastroenterol Nutr 2017; 64:238-244. [PMID: 27101538 DOI: 10.1097/mpg.0000000000001241] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND Calprotectin is a fecal marker of intraintestinal inflammation derived from activated enteric neutrophils and macrophages. It is useful as a clinical marker in inflammatory bowel diseases; furthermore, it may have a role in public health epidemiology. OBJECTIVES The aim of the study was to describe the distribution of fecal calprotectin in Guatemalan preschool children sharing a common institutional diet; to relate it collectively to pediatric distributions in other geographic settings, and individually to concomitant indicators of intestinal infection or colonization and other descriptive features of the child. METHODS Fecal samples were collected in 87 subjects, ages 2 to 7 years across 3 daycare centers sharing a common institutional menu, but from different ecological settings. Stools were examined, variously by routine light microscopy, quantitative egg counts, and a Giardia antigen test, for microbiological diagnosis, and an ELISA assay for fecal calprotectin (CalproLab). RESULTS The median fecal calprotectin value was 58 mg/kg, with a mean of 98 ± 136 mg/kg and a range from 10 to 950 mg/kg; 61% of values were above the manufacturer's cut-off for elevated concentration and 51% exceeded an age-adjusted criterion. There were no associations between sex, age, growth indicators, or fecal microbiological findings by microscopy or ELISA assays, alone or in combination. The central tendency (mean or median) and distribution were generally shifted to the right in relation to comparable reports from children across the world literature. CONCLUSIONS Although specific, low-grade intestinal infections do not define calprotectin subgroups, right-shifted fecal calprotectin status in this population may reflect a general and diffuse stress of adverse environmental sanitation.
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Pattananandecha T, Sirilun S, Duangjitcharoen Y, Sivamaruthi BS, Suwannalert P, Peerajan S, Chaiyasut C. Hydrolysed inulin alleviates the azoxymethane-induced preneoplastic aberrant crypt foci by altering selected intestinal microbiota in Sprague-Dawley rats. PHARMACEUTICAL BIOLOGY 2016; 54:1596-1605. [PMID: 26794346 DOI: 10.3109/13880209.2015.1110597] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 07/16/2015] [Accepted: 10/10/2015] [Indexed: 06/05/2023]
Abstract
Context Inulin, a non-digestible carbohydrate isolated from Helianthus tuberosus L. (Asteraceae), has been shown to alter the gut beneficial bacteria including Lactobacillus spp. and Bifidobacteria. Inulin also influences the activities of intestinal microbiota that could prevent the colon cancer development. Objective This study determines the effect of hydrolysed inulin with different degrees of polymerisation on alteration of intestinal microbiota and their activities on azoxymethane (AOM)-induced preneoplastic aberrant crypt foci (ACF) in rats. Materials and methods Seventy-two male Sprague-Dawley rats were randomly divided into six groups (three control and three AOM-treated groups) and the animal were fed with either a normal diet or diet containing 10% of long-chain inulin (InuL) or short-chain inulin (InuS), respectively, for 17 weeks. Colon cancer was induced in rats by injecting AOM subcutaneously at the 8th and 9th week of the study period. At the end of the experiment, cecal contents of rats were examined for selected microbiota, organic acids, putrefactive compounds and microbial enzymes. ACF formation was microscopically examined. Results The inulin diets significantly increased the weight and decreased the pH of the caecal content. The rats fed with InuL-supplemented diet showed approximately 2.9- and 6.8-fold increases in the biomass of Lactobacillus spp. and Bifidobacteria, respectively. Naive and AOM-treated rats fed with inulin-supplemented diet showed ∼1.3- and ∼2.2-fold decreases in the biomass of Escherichia coli and Salmonella enterica serovar Typhi, respectively. Inulins significantly decreased the colonic concentration of phenol, p-cresol and indole. Reduction in the activity of microbial enzymes such as β-glucuronidase, azoreductase and nitroreductase were observed in inulin-treated animals. Reduction in the ACF formation has been observed in inulin-treated groups. Discussion and conclusion The present study demonstrates that dietary administration of inulin reduces the formation of preneoplastic lesions in the colon, possibly by altering the microecology and microbial activities on carcinogenesis.
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Affiliation(s)
- Thanawat Pattananandecha
- a Health Product Research and Development Unit , Faculty of Pharmacy, Chiang Mai University , Chiang Mai , Thailand
| | - Sasithorn Sirilun
- a Health Product Research and Development Unit , Faculty of Pharmacy, Chiang Mai University , Chiang Mai , Thailand
| | - Yodsawee Duangjitcharoen
- a Health Product Research and Development Unit , Faculty of Pharmacy, Chiang Mai University , Chiang Mai , Thailand
| | | | - Prasit Suwannalert
- b Department of Pathobiology , Faculty of Science, Mahidol University , Bangkok , Thailand
| | | | - Chaiyavat Chaiyasut
- a Health Product Research and Development Unit , Faculty of Pharmacy, Chiang Mai University , Chiang Mai , Thailand
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Lemas DJ, Young BE, Baker PR, Tomczik AC, Soderborg TK, Hernandez TL, de la Houssaye BA, Robertson CE, Rudolph MC, Ir D, Patinkin ZW, Krebs NF, Santorico SA, Weir T, Barbour LA, Frank DN, Friedman JE. Alterations in human milk leptin and insulin are associated with early changes in the infant intestinal microbiome. Am J Clin Nutr 2016; 103:1291-300. [PMID: 27140533 PMCID: PMC4841936 DOI: 10.3945/ajcn.115.126375] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 03/08/2016] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Increased maternal body mass index (BMI) is a robust risk factor for later pediatric obesity. Accumulating evidence suggests that human milk (HM) may attenuate the transfer of obesity from mother to offspring, potentially through its effects on early development of the infant microbiome. OBJECTIVES Our objective was to identify early differences in intestinal microbiota in a cohort of breastfeeding infants born to obese compared with normal-weight (NW) mothers. We also investigated relations between HM hormones (leptin and insulin) and both the taxonomic and functional potentials of the infant microbiome. DESIGN Clinical data and infant stool and fasting HM samples were collected from 18 NW [prepregnancy BMI (in kg/m(2)) <24.0] and 12 obese (prepregnancy BMI >30.0) mothers and their exclusively breastfed infants at 2 wk postpartum. Infant body composition at 2 wk was determined by air-displacement plethysmography. Infant gastrointestinal microbes were estimated by using 16S amplicon and whole-genome sequencing. HM insulin and leptin were determined by ELISA; short-chain fatty acids (SCFAs) were measured in stool samples by using gas chromatography. Power was set at 80%. RESULTS Infants born to obese mothers were exposed to 2-fold higher HM insulin and leptin concentrations (P < 0.01) and showed a significant reduction in the early pioneering bacteria Gammaproteobacteria (P = 0.03) and exhibited a trend for elevated total SCFA content (P < 0.06). Independent of maternal prepregnancy BMI, HM insulin was positively associated with both microbial taxonomic diversity (P = 0.03) and Gammaproteobacteria (e.g., Enterobacteriaceae; P = 0.04) and was negatively associated with Lactobacillales (e.g., Streptococcaceae; P = 0.05). Metagenomic analysis showed that HM leptin and insulin were associated with decreased bacterial proteases, which are implicated in intestinal permeability, and reduced concentrations of pyruvate kinase, a biomarker of pediatric gastrointestinal inflammation. CONCLUSION Our results indicate that, although maternal obesity may adversely affect the early infant intestinal microbiome, HM insulin and leptin are independently associated with beneficial microbial metabolic pathways predicted to increase intestinal barrier function and reduce intestinal inflammation. This trial was registered at clinicaltrials.gov as NCT01693406.
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Affiliation(s)
| | | | - Peter R Baker
- Clinical Genetics and Metabolism, Department of Pediatrics
| | | | | | - Teri L Hernandez
- Divisions of Endocrinology, Metabolism, and Diabetes and College of Nursing
| | | | | | | | - Diana Ir
- Infectious Diseases, Department of Medicine
| | | | | | - Stephanie A Santorico
- Human Medical Genetics and Genomics Program; and Department of Mathematical and Statistical Sciences, University of Colorado Denver, Denver, CO; and
| | - Tiffany Weir
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, CO
| | - Linda A Barbour
- Divisions of Endocrinology, Metabolism, and Diabetes and Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | | | - Jacob E Friedman
- Sections of Neonatology, Divisions of Endocrinology, Metabolism, and Diabetes and
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Skarżyńska E, Żytyńska-Daniluk J, Lisowska-Myjak B. Meconium lactoferrin levels in neonates: can we predefine normal values? J Matern Fetal Neonatal Med 2016; 30:279-283. [DOI: 10.3109/14767058.2016.1171307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ewa Skarżyńska
- Department of Biochemistry and Clinical Chemistry, Medical University of Warsaw, Warsaw, Poland and
| | - Joanna Żytyńska-Daniluk
- Clinical Department of Obstetrics, Female Diseases and Gynecological Oncology, Central Clinical Hospital of the Ministry of the Interior, Warsaw, Poland
| | - Barbara Lisowska-Myjak
- Department of Biochemistry and Clinical Chemistry, Medical University of Warsaw, Warsaw, Poland and
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Biomarkers of Gastrointestinal Host Responses to Microbial Infections. Mol Microbiol 2016. [DOI: 10.1128/9781555819071.ch46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Moodley-Govender E, Mulol H, Stauber J, Manary M, Coutsoudis A. Increased Exclusivity of Breastfeeding Associated with Reduced Gut Inflammation in Infants. Breastfeed Med 2015; 10:488-92. [PMID: 26594906 DOI: 10.1089/bfm.2015.0110] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
INTRODUCTION The development of the intestinal gut is largely influenced by early nutrition. Infant immunity is challenged by the exposure of the gut to foreign bodies, which mediate inflammation of the gut. This study assessed the levels of gut inflammation in relation to the percentage of breastmilk consumed/the exclusivity of breastfeeding in South African infants. This is the first study to examine markers of gut inflammation in infants in relation to exclusivity of breastfeeding measured by a gold standard method. METHODOLOGY Twenty-four black South African infants were included in this study. The categorization of different degrees of exclusivity of breastfeeding was made using an objective gold standard method developed by the International Atomic Energy Agency (deuterium dilution method). Markers of gut inflammation were measured noninvasively by sampling stool from the infants averaging 6 months of age. Gut inflammation was investigated by running multiple Droplet Digital™ (Bio-Rad, Hercules, CA) polymerization chain reaction tests profiling a panel of five mRNA probes (interleukin-8 [IL-8], S100 calcium-binding protein A8 [S100A8], Toll-like receptor-4, human leukocyte antigen on chromosome 6 region 6p21.31, and defensin alpha 8). These mRNA biomarkers expressions were tested in proportion to number of glyceraldehyde 3-phosphate dehydrogenase (GAPDH) copies as GAPDH is constitutively expressed in most cells. RESULTS Two previously described robust mRNA markers of gut inflammation (S100A8 and IL-8) were found to correlate significantly to the percentage of breastmilk intake (r(2) = 0.4302, p = 0.0004 and r(2) = 0.3633, p = 0.002, respectively) in the range of 75-100% in 22 samples analyzed. CONCLUSIONS This study using objective methodology has shown that higher percentages of breastmilk intake are associated with significantly lower levels of gut inflammation. This further supports the health benefits observed in exclusively breastfed infants.
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Affiliation(s)
- Eshia Moodley-Govender
- 1 Department of Paediatrics and Child Health, University of KwaZulu-Natal , Durban, South Africa
| | - Helen Mulol
- 1 Department of Paediatrics and Child Health, University of KwaZulu-Natal , Durban, South Africa
| | - Jennifer Stauber
- 2 Washington University School of Medicine , St. Louis, Missouri
| | - Mark Manary
- 2 Washington University School of Medicine , St. Louis, Missouri
| | - Anna Coutsoudis
- 1 Department of Paediatrics and Child Health, University of KwaZulu-Natal , Durban, South Africa
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Li X, Atkinson MA. The role for gut permeability in the pathogenesis of type 1 diabetes--a solid or leaky concept? Pediatr Diabetes 2015; 16:485-92. [PMID: 26269193 PMCID: PMC4638168 DOI: 10.1111/pedi.12305] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 07/17/2015] [Accepted: 07/20/2015] [Indexed: 02/06/2023] Open
Abstract
Increasing evidence, both functional and morphological, supports the concept of increased intestinal permeability as an intrinsic characteristic of type 1 diabetes (T1D) in both humans and animal models of the disease. Often referred to as a 'leaky gut', its mechanistic impact on the pathogenesis of T1D remains unclear. Hypotheses that this defect influences immune responses against antigens (both self and non-self) predominate, yet others argue hyperglycemia and insulitis may contribute to increased gut permeability in T1D. To address these complicated issues, we herein review the many conceptual role(s) for a leaky gut in the pathogenesis of T1D and suggest ways that if true, therapeutic interventions aimed at the gut-pancreas axis may prove promising for future therapeutic interventions.
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Affiliation(s)
- Xia Li
- Institute of Metabolism and Endocrinology, The Second Xiangya Hospital and the Diabetes Center, Metabolic Syndrome Research Center, Key Laboratory of Diabetes Immunology, Ministry of Education, Central South University, National Clinical Research Center for Metabolic Diseases, Changsha, Hunan, 410011, China
| | - Mark A. Atkinson
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, United States 32610,Department of Pediatrics, College of Medicine, University of Florida, Gainesville, FL, United States 32610
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Ooi CY, Pang T, Leach ST, Katz T, Day AS, Jaffe A. Fecal Human β-Defensin 2 in Children with Cystic Fibrosis: Is There a Diminished Intestinal Innate Immune Response? Dig Dis Sci 2015; 60:2946-52. [PMID: 26271615 DOI: 10.1007/s10620-015-3842-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Accepted: 08/02/2015] [Indexed: 12/19/2022]
Abstract
BACKGROUND Defects in bacterial host defenses in the cystic fibrosis (CF) airways have been extensively investigated, but the role of the intestinal innate immune system in CF is unknown. Human β-defensin 2 (HBD-2) is an antimicrobial protein produced by epithelial surfaces and upregulated by inflammation. Its expression in the CF intestine is unknown. AIM To determine whether HBD-2 was present in the feces of patients with CF, and to compare fecal HBD-2 levels between CF and healthy controls (HC). To compare fecal HBD-2 levels in inflamed and noninflamed states, as measured by fecal calprotectin, as a secondary aim. METHODS Feces from children with CF and HC were collected for analysis. RESULTS Thirty-three CF patients and 33 HC were recruited. All CF patients had detectable fecal HBD-2. There was no difference between fecal HBD-2 in CF and HC (median (IQR) 49.1 (19.7-77.2) versus 43.4 (26.5-71.9) ng/g; P = 0.7). Fecal calprotectin was significantly higher in the CF cohort than in HC (median (IQR) 61.3 (43.8-143.8) versus 19.5 (19.5-35.1) mg/kg; P < 0.0001). There was no difference in fecal HBD-2 levels between CF subjects with fecal calprotectin ≥50 mg/kg and <50 mg/kg (50.5 (19.6-80.2) versus 43.0 (19.0-70.4); P = 0.7). There was no correlation between fecal HBD-2 and calprotectin in CF (r = 0.14; P = 0.4). CONCLUSION Fecal HBD-2 levels were not increased in children with CF, in inflamed or noninflamed states. The lack of HBD-2 induction and upregulation under inflammatory conditions may suggest a diminished intestinal innate immune response in CF.
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Affiliation(s)
- Chee Y Ooi
- Discipline of Paediatrics, School of Women's and Children's Health, Medicine, Sydney Children's Hospital, University of New South Wales, High Street, Randwick, Sydney, NSW, 2031, Australia. .,Department of Paediatric Gastroenterology, Sydney Children's Hospital, High Street, Randwick, Sydney, NSW, 2031, Australia.
| | - Tamara Pang
- Discipline of Paediatrics, School of Women's and Children's Health, Medicine, Sydney Children's Hospital, University of New South Wales, High Street, Randwick, Sydney, NSW, 2031, Australia.
| | - Steven T Leach
- Discipline of Paediatrics, School of Women's and Children's Health, Medicine, Sydney Children's Hospital, University of New South Wales, High Street, Randwick, Sydney, NSW, 2031, Australia.
| | - Tamarah Katz
- Department of Nutrition and Dietetics, Sydney Children's Hospital, High Street, Randwick, Sydney, NSW, 2031, Australia.
| | - Andrew S Day
- Department of Paediatrics, Christchurch Hospital, University of Otago, Christchurch, 4710, New Zealand.
| | - Adam Jaffe
- Discipline of Paediatrics, School of Women's and Children's Health, Medicine, Sydney Children's Hospital, University of New South Wales, High Street, Randwick, Sydney, NSW, 2031, Australia. .,Department of Paediatric Respiratory, Sydney Children's Hospital, High Street, Randwick, Sydney, NSW, 2031, Australia.
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Baricelli J, Rocafull MA, Vázquez D, Bastidas B, Báez-Ramirez E, Thomas LE. β-defensin-2 in breast milk displays a broad antimicrobial activity against pathogenic bacteria. J Pediatr (Rio J) 2015; 91:36-43. [PMID: 25211380 DOI: 10.1016/j.jped.2014.05.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 05/06/2014] [Accepted: 05/14/2014] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE To describe the antimicrobial activity of β-defensin-2 produced in the mammary gland and secreted in human breast milk. METHODS The peptide production was performed by DNA cloning. β-defensin-2 levels were quantified in 61 colostrum samples and 39 mature milk samples from healthy donors, by an indirect enzyme-linked immunosorbent assay (ELISA). Using halo inhibition assay, this study assessed activity against seven clinical isolates from diarrheal feces of children between 0 and 2 years of age. The activity of β-defensin-2 against three opportunistic pathogens that can cause nosocomial infections was determined by microdilution test. RESULTS The peptide levels were higher in colostrum (n=61) than in mature milk samples (n=39), as follows: median and range, 8.52 (2.6-16.3) μg/ml versus 0.97 (0.22-3.78), p<0.0001; Mann-Whitney test. The recombinant peptide obtained showed high antimicrobial activity against a broad range of pathogenic bacteria. Its antibacterial activity was demonstrated in a disk containing between 1-4 μg, which produced inhibition zones ranging from 18 to 30 mm against three isolates of Salmonella spp. and four of E. coli. β-defensin-2 showed minimum inhibitory concentrations (MICs) of 0.25 μg/mL and 0.5 μg/mL for S. marcescen and P. aeruginosa, respectively, while a higher MIC (4 μg/mL) was obtained against an isolated of multidrug-resistant strain of A. baumannii. CONCLUSIONS To the authors' knowledge, this study is the first to report β-defensin-2 levels in Latin American women. The production and the activity of β-defensin-2 in breast milk prove its importance as a defense molecule for intestinal health in pediatric patients.
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Affiliation(s)
- Joanna Baricelli
- Laboratorio de Fisiología Molecular, Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela; Banco de Leche Humana, Hospital Universitario de Caracas, Caracas, Venezuela
| | - Miguel A Rocafull
- Laboratorio de Fisiología Molecular, Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela; Banco de Leche Humana, Hospital Universitario de Caracas, Caracas, Venezuela
| | - Desiree Vázquez
- Laboratorio de Fisiología Molecular, Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela; Banco de Leche Humana, Hospital Universitario de Caracas, Caracas, Venezuela
| | - Betsi Bastidas
- Banco de Leche Humana, Hospital Universitario de Caracas, Caracas, Venezuela; Laboratorio Delgado Launois, Clínica Lugo, Maracay, Venezuela
| | - Estalina Báez-Ramirez
- Laboratorio de Fisiología Molecular, Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela; Banco de Leche Humana, Hospital Universitario de Caracas, Caracas, Venezuela
| | - Luz E Thomas
- Laboratorio de Fisiología Molecular, Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela; Banco de Leche Humana, Hospital Universitario de Caracas, Caracas, Venezuela.
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Baricelli J, Rocafull MA, Vázquez D, Bastidas B, Báez‐Ramirez E, Thomas LE. β‐defensin‐2 in breast milk displays a broad antimicrobial activity against pathogenic bacteria. JORNAL DE PEDIATRIA (VERSÃO EM PORTUGUÊS) 2015. [DOI: 10.1016/j.jpedp.2014.05.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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