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Ruiz-Carnicer Á, Garzón-Benavides M, Fombuena B, Segura V, García-Fernández F, Sobrino-Rodríguez S, Gómez-Izquierdo L, Montes-Cano MA, Rodríguez-Herrera A, Millán R, Rico MC, González-Naranjo C, Bozada-García JM, Díaz J, Coronel-Rodríguez C, Espín B, Romero-Gómez M, Cebolla Á, Sousa C, Comino I, Argüelles F, Pizarro Á. Negative predictive value of the repeated absence of gluten immunogenic peptides in the urine of treated celiac patients in predicting mucosal healing: new proposals for follow-up in celiac disease. Am J Clin Nutr 2020; 112:1240-1251. [PMID: 32692806 DOI: 10.1093/ajcn/nqaa188] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 06/15/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The treatment of celiac disease (CD) is a lifelong gluten-free diet (GFD). The current methods for monitoring GFD conformance, such as a dietary questionnaire or serology tests, may be inaccurate in detecting dietary transgressions, and duodenal biopsies are invasive, expensive, and not a routine monitoring technique. OBJECTIVES Our aim was to determine the clinical usefulness of urine gluten immunogenic peptides (GIP) as a biomarker monitoring GFD adherence in celiac patients and to evaluate the concordance of the results with the degree of mucosal damage. METHODS A prospective observational study was conducted involving 22 de novo CD patients, 77 celiac patients consuming a GFD, and 13 nonceliac subjects. On 3 d of the week, urine samples were collected and the GIP concentrations were tested. Simultaneously, anti-tissue transglutaminase antibodies, questionnaire results, clinical manifestations, and histological findings were analyzed. RESULTS Approximately 24% (18 of 76) of the celiac patients consuming a GFD exhibited Marsh II-III mucosal damage. Among this population, 94% (17 of 18) had detectable urine GIP; however, between 60% and 80% were asymptomatic and exhibited negative serology and appropriate GFD adherence based on the questionnaire. In contrast, 97% (31 of 32) of the celiac patients without duodenal damage had no detectable GIP. These results demonstrated the high sensitivity (94%) and negative predictive value (97%) of GIP measurements in relation to duodenal biopsy findings. In the de novo CD-diagnosed cohort, 82% (18 of 22) of patients had measurable amounts of GIP in the urine. CONCLUSIONS Determining GIP concentrations in several urine samples may be an especially convenient approach to assess recent gluten exposure in celiac patients and appears to accurately predict the absence of histological lesions. The introduction of GIP testing as an assessment technique for GFD adherence may help in ascertaining dietary compliance and to target the most suitable intervention during follow-up.
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Affiliation(s)
- Ángela Ruiz-Carnicer
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville, Spain
| | - Marta Garzón-Benavides
- Digestive Disease Clinical Unit, Gastroenterology Division, Virgen del Rocío Hospital, Seville, Spain
| | - Blanca Fombuena
- Digestive Disease Clinical Unit, Gastroenterology Division, Virgen del Rocío Hospital, Seville, Spain
| | - Verónica Segura
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville, Spain
| | | | | | | | - Marcos A Montes-Cano
- Institute of Biomedicine of Seville (IBiS), Seville, Spain; Faculty of Medicine, University of Seville, Seville, Spain
| | | | - Raquel Millán
- Digestive Disease Clinical Unit, Gastroenterology Division, Virgen del Rocío Hospital, Seville, Spain
| | - María C Rico
- Digestive Disease Clinical Unit, Gastroenterology Division, Virgen del Rocío Hospital, Seville, Spain
| | - Carmen González-Naranjo
- Digestive Disease Clinical Unit, Gastroenterology Division, Virgen del Rocío Hospital, Seville, Spain
| | - Juan M Bozada-García
- Endoscopy of Digestive Diseases Clinical Unit, Virgen del Rocío Hospital, Seville, Spain
| | - Jacobo Díaz
- Clinical Analysis Service, Hospital Universitario INGESA, Ceuta, Spain
| | | | - Beatriz Espín
- Pediatric, Gastroenterology, Hepatology and Nutrition Section, Virgen del Rocio Children's Hospital, Seville, Spain
| | - Manuel Romero-Gómez
- Digestive Disease Clinical Unit, Gastroenterology Division, Virgen del Rocío Hospital, Seville, Spain
| | | | - Carolina Sousa
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville, Spain
| | - Isabel Comino
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville, Spain
| | - Federico Argüelles
- Digestive Diseases Clinical Unit, Virgen Macarena Hospital, Seville, Spain
| | - Ángeles Pizarro
- Digestive Disease Clinical Unit, Gastroenterology Division, Virgen del Rocío Hospital, Seville, Spain
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Giralt-López A, Molina-Van den Bosch M, Vergara A, García-Carro C, Seron D, Jacobs-Cachá C, Soler MJ. Revisiting Experimental Models of Diabetic Nephropathy. Int J Mol Sci 2020; 21:ijms21103587. [PMID: 32438732 PMCID: PMC7278948 DOI: 10.3390/ijms21103587] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 12/12/2022] Open
Abstract
Diabetes prevalence is constantly increasing and, nowadays, it affects more than 350 million people worldwide. Therefore, the prevalence of diabetic nephropathy (DN) has also increased, becoming the main cause of end-stage renal disease (ESRD) in the developed world. DN is characterized by albuminuria, a decline in glomerular filtration rate (GFR), hypertension, mesangial matrix expansion, glomerular basement membrane thickening, and tubulointerstitial fibrosis. The therapeutic advances in the last years have been able to modify and delay the natural course of diabetic kidney disease (DKD). Nevertheless, there is still an urgent need to characterize the pathways that are involved in DN, identify risk biomarkers and prevent kidney failure in diabetic patients. Rodent models provide valuable information regarding how DN is set and its progression through time. Despite the utility of these models, kidney disease progression depends on the diabetes induction method and susceptibility to diabetes of each experimental strain. The classical DN murine models (Streptozotocin-induced, Akita, or obese type 2 models) do not develop all of the typical DN features. For this reason, many models have been crossed to a susceptible genetic background. Knockout and transgenic strains have also been created to generate more robust models. In this review, we will focus on the description of the new DN rodent models and, additionally, we will provide an overview of the available methods for renal phenotyping.
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Affiliation(s)
- Anna Giralt-López
- Nephrology Research Group, Vall d’Hebrón Institut de Recerca, 08035 Barcelona, Spain; (A.G.-L.); (M.M.-V.d.B.); (A.V.); (C.G.-C.); (D.S.)
| | - Mireia Molina-Van den Bosch
- Nephrology Research Group, Vall d’Hebrón Institut de Recerca, 08035 Barcelona, Spain; (A.G.-L.); (M.M.-V.d.B.); (A.V.); (C.G.-C.); (D.S.)
| | - Ander Vergara
- Nephrology Research Group, Vall d’Hebrón Institut de Recerca, 08035 Barcelona, Spain; (A.G.-L.); (M.M.-V.d.B.); (A.V.); (C.G.-C.); (D.S.)
- Nephrology Department, Vall d’Hebrón Hospital, 08035 Barcelona, Spain
| | - Clara García-Carro
- Nephrology Research Group, Vall d’Hebrón Institut de Recerca, 08035 Barcelona, Spain; (A.G.-L.); (M.M.-V.d.B.); (A.V.); (C.G.-C.); (D.S.)
- Nephrology Department, Vall d’Hebrón Hospital, 08035 Barcelona, Spain
| | - Daniel Seron
- Nephrology Research Group, Vall d’Hebrón Institut de Recerca, 08035 Barcelona, Spain; (A.G.-L.); (M.M.-V.d.B.); (A.V.); (C.G.-C.); (D.S.)
- Nephrology Department, Vall d’Hebrón Hospital, 08035 Barcelona, Spain
| | - Conxita Jacobs-Cachá
- Nephrology Research Group, Vall d’Hebrón Institut de Recerca, 08035 Barcelona, Spain; (A.G.-L.); (M.M.-V.d.B.); (A.V.); (C.G.-C.); (D.S.)
- Correspondence: (C.J.-C.); (M.J.S.)
| | - Maria José Soler
- Nephrology Research Group, Vall d’Hebrón Institut de Recerca, 08035 Barcelona, Spain; (A.G.-L.); (M.M.-V.d.B.); (A.V.); (C.G.-C.); (D.S.)
- Nephrology Department, Vall d’Hebrón Hospital, 08035 Barcelona, Spain
- Correspondence: (C.J.-C.); (M.J.S.)
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Mohamed HRH, Welson M, Yaseen AE, El-Ghor A. Induction of chromosomal and DNA damage and histological alterations by graphene oxide nanoparticles in Swiss mice. Drug Chem Toxicol 2019; 44:631-641. [PMID: 31368372 DOI: 10.1080/01480545.2019.1643876] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The unique physicochemical properties of graphene oxide (GO) nanoparticles increase their uses in a wide range of applications that increase their release into the environment, and thus human exposure. However, the in vivo clastogenicity and genotoxicity of GO nanoparticles have not been well investigated. The current study was, therefore, designed to investigate the possible induction of chromosomal and DNA damage by GO nanoparticles and their impact on the tissue architecture in mice. Oral administration of GO nanoparticles for one or five consecutive days at the three dose levels 10, 20 or 40 mg/kg significantly increased the micronuclei and DNA damage levels in a dose-dependent manner in mice bone marrow cells, as well as caused, histological lesions including apoptosis, necrosis, inflammations and cells degeneration in the mice liver and brain tissue sections compared to the normal control mice. Thus, we concluded that oral administration of GO nanoparticles induced chromosomal and DNA damage in a dose-dependent manner as well as histological injuries in both acute and subacute treatments.
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Affiliation(s)
- Hanan R H Mohamed
- Zoology Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Mary Welson
- Zoology Department, Faculty of Science, Suez University, Suez, Egypt
| | - Ahmed Essa Yaseen
- Zoology Department, Faculty of Science, Suez University, Suez, Egypt
| | - Akmal El-Ghor
- Zoology Department, Faculty of Science, Cairo University, Giza, Egypt
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Bus P, Chua JS, Klessens CQF, Zandbergen M, Wolterbeek R, van Kooten C, Trouw LA, Bruijn JA, Baelde HJ. Complement Activation in Patients With Diabetic Nephropathy. Kidney Int Rep 2017; 3:302-313. [PMID: 29725633 PMCID: PMC5932121 DOI: 10.1016/j.ekir.2017.10.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 10/09/2017] [Indexed: 12/13/2022] Open
Abstract
Introduction Complement activation plays a role in various organs in patients with diabetes. However, in diabetic nephropathy (DN), the role of complement activation is poorly understood. We examined the prevalence and clinical significance of complement deposits in the renal tissue of cases with type 1 and type 2 diabetes with and without DN. Methods We measured the prevalence of glomerular C4d, C1q, mannose-binding lectin (MBL), and C5b-9 deposits in 101 autopsied diabetic cases with DN, 59 autopsied diabetic cases without DN, and 41 autopsied cases without diabetes or kidney disease. The presence of complement deposits was scored by researchers who were blinded with respect to the clinical and histological data. Results C4d deposits were more prevalent in cases with DN than in cases without DN in both the glomeruli (46% vs. 26%) and the arterioles (28% vs. 12%). C1q deposits were also increased in the glomerular hili (77% vs. 55%) and arterioles (33% vs.14%), and were correlated with DN (P < 0.01). MBL deposits were only rarely observed. C5b-9 deposits were more prevalent in the cases with diabetes mellitus (DM) than in the cases without DM (69% vs. 32%; P < 0.001). Finally, glomerular C4d and C5b-9 deposits were correlated with the severity of DN (ρ = 0.341 and 0.259, respectively; P < 0.001). Conclusion Complement activation is correlated with both the presence and severity of DN, suggesting that the complement system is involved in the development of renal pathology in patients with diabetes and is a promising target for inhibiting and/or preventing DN in these patients.
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Affiliation(s)
- Pascal Bus
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jamie S Chua
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Céline Q F Klessens
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Malu Zandbergen
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Ron Wolterbeek
- Department of Medical Statistics and Bioinformatics, Leiden University Medical Center, Leiden, The Netherlands
| | - Cees van Kooten
- Department of Nephrology, Leiden University Medical Center, Leiden, The Netherlands
| | - Leendert A Trouw
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands
| | - Jan A Bruijn
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Hans J Baelde
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
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Nenna R, Tiberti C, Petrarca L, Mennini M, Mastrogiorgio G, Lucantoni F, Panimolle F, Pontone S, Bavastrelli M, Magliocca FM, Bonamico M. Anti-transglutaminase immunoreactivity and histological lesions of the duodenum in coeliac patients. Int Immunol 2013; 25:389-94. [PMID: 23446848 DOI: 10.1093/intimm/dxs159] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Coeliac disease (CD) is characterized by several markers, including anti-transglutaminase auto-antibodies (tTGAb) directed against multiple epitopes of the gliadin protein. We aimed to investigate the correlation among CD duodenal lesions, tTGAb titres and the immunoreactivity against tTG constructs. A total of 345 CD patients (209 females, 136 males, overall median age: 7.3 years) were tested for full-length (fl) tTGAb with a fluid-phase radioimmunoassay. Out of the total, 231 patients were also tested for immunoreactivity against tTG fragments (F1: a.a. 227-687 and F2: a.a. 473-687). Patients were classified according to diffuse (D), patchy (P) or bulb (B) histological lesions. All sera were found fltTGAb positive. Patients with D, P and B lesions had a mean Ab index of 0.84±0.39, 0.57±0.39 and 0.45±0.24, respectively. Mean tTGAb titre varied between D and localized (P+B) patients (0.84±0.39 versus 0.52±0.34, P < 0.0001). Overall, 86.1% of patients were F1 auto-antibody (F1Ab) positive (D: 89%, P: 75%, B: 40%; D versus P+B: P = 0.004) and 49% of patients were F2 auto-antibody (F2Ab) positive (D: 53%, P: 19%, B: 10%; D versus P+B: P = 0.0006). Of the D patients 50.7% showed combined F1Ab-F2Ab (D versus P+B: P = 0.001), whereas 60% of B patients were negative for both F1Ab and F2Ab (B versus D: P < 0.0001). Coeliac-specific tTGAb immunoreactivity correlates with the grading and extension of histological duodenal lesions in CD patients at diagnosis. The immunoreactivity against single and combined tTG fragments is significantly higher in patients with D lesions. This is the first evidence of a distinct coeliac-specific immunoreactivity in patients with different duodenal involvement.
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Affiliation(s)
- Raffaella Nenna
- Department of Paediatrics, Sapienza University of Rome, Rome, Italy.
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