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Busso D, González A, Santander N, Saavedra F, Quiroz A, Rivera K, González J, Olmos P, Marette A, Bazinet L, Illanes S, Enrione J. A Quinoa Protein Hydrolysate Fractionated by Electrodialysis with Ultrafiltration Membranes Improves Maternal and Fetal Outcomes in a Mouse Model of Gestational Diabetes Mellitus. Mol Nutr Food Res 2023; 67:e2300047. [PMID: 37667444 DOI: 10.1002/mnfr.202300047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 05/08/2023] [Indexed: 09/06/2023]
Abstract
SCOPE Quinoa intake exerts hypoglycemic and hypolipidemic effects in animals and humans. Although peptides from quinoa inhibit key enzymes involved in glucose homeostasis in vitro, their in vivo antidiabetic properties have not been investigated. METHODS AND RESULTS This study evaluated the effect of oral administration of a quinoa protein hydrolysate (QH) produced through enzymatic hydrolysis and fractionation by electrodialysis with ultrafiltration membrane (EDUF) (FQH) on the metabolic and pregnancy outcomes of Lepdb/+ pregnant mice, a preclinical model of gestational diabetes mellitus. The 4-week pregestational consumption of 2.5 mg mL-1 of QH in water prevented glucose intolerance and improves hepatic insulin signaling in dams, also reducing fetal weights. Sequencing and bioinformatic analyses of the defatted FQH (FQHD) identified 11 peptides 6-10 amino acids long that aligned with the quinoa proteome and exhibited putative anti-dipeptidyl peptidase-4 (DPP-IV) activity, confirmed in vitro in QH, FQH, and FDQH fractions. Peptides homologous to mouse and human proteins enriched for biological processes related to glucose metabolism are also identified. CONCLUSION Processing of quinoa protein may be used to develop a safe and effective nutritional intervention to control glucose intolerance during pregnancy. Further studies are required to confirm if this nutritional intervention is applicable to pregnant women.
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Affiliation(s)
- Dolores Busso
- Program of Reproductive Biology, Research and Innovation Center, School of Medicine, Faculty of Medicine, Universidad de los Andes, Santiago, 7550000, Chile
- Center of Interventional Medicine for Precision and Advanced Cellular Therapy (IMPACT), Universidad de los Andes, Santiago, 7550000, Chile
| | - Adrián González
- Biopolymer Research and Engineering Lab (BiopREL), Research and Innovation Center, School of Nutrition and Dietetics, Faculty of Medicine, Universidad de los Andes, Santiago, 7550000, Chile
| | - Nicolás Santander
- Health Science Institute, Universidad de O´Higgins, Rancagua, 2841959, Chile
| | - Fujiko Saavedra
- Program of Reproductive Biology, Research and Innovation Center, School of Medicine, Faculty of Medicine, Universidad de los Andes, Santiago, 7550000, Chile
| | - Alonso Quiroz
- PhD Program in Medical Sciences, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8320000, Chile
| | - Katherine Rivera
- PhD Program in Medical Sciences, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8320000, Chile
| | - Javier González
- Immersion in Science Program, School of Medicine, Faculty of Medicine, Universidad de los Andes, Santiago, 7550000, Chile
| | - Pablo Olmos
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8320000, Chile
| | - André Marette
- Institute of Nutrition and Functional Foods (INAF), Université Laval, Québec, Québec G1V 0A6, Canada
- Department of Anatomy and Physiology, Faculty of Medicine, Laval Hospital Research Center, Université Laval, Québec, Québec G1V 4G5, Canada
| | - Laurent Bazinet
- Department of Anatomy and Physiology, Faculty of Medicine, Laval Hospital Research Center, Université Laval, Québec, Québec G1V 4G5, Canada
- Department of Food Science and Nutrition, Laboratoire de Transformation Alimentaire et Procédés ÉlectroMembranaire (LTAPEM, Laboratory of Food Processing and Electro-Membrane Processes) Université Laval, Québec, Québec G1V 0A6, Canada
| | - Sebastián Illanes
- Program of Reproductive Biology, Research and Innovation Center, School of Medicine, Faculty of Medicine, Universidad de los Andes, Santiago, 7550000, Chile
- Center of Interventional Medicine for Precision and Advanced Cellular Therapy (IMPACT), Universidad de los Andes, Santiago, 7550000, Chile
| | - Javier Enrione
- Center of Interventional Medicine for Precision and Advanced Cellular Therapy (IMPACT), Universidad de los Andes, Santiago, 7550000, Chile
- Biopolymer Research and Engineering Lab (BiopREL), Research and Innovation Center, School of Nutrition and Dietetics, Faculty of Medicine, Universidad de los Andes, Santiago, 7550000, Chile
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Ramírez V, Weber L, Hernández M, Realini O, Bendek MJ, Busso D, Hoare A, Illanes SE, Chaparro A. Obesity is related to maternal periodontitis severity in pregnancy: a cross-sectional study. Clin Oral Investig 2023; 27:5509-5518. [PMID: 37505241 DOI: 10.1007/s00784-023-05170-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 07/13/2023] [Indexed: 07/29/2023]
Abstract
OBJECTIVES To evaluate the relationship between obesity and periodontitis staging compared with periodontal healthy or gingivitis in pregnant women. MATERIALS AND METHODS An analytical cross-sectional study was conducted on pregnant women between 11 and 14 weeks of pregnancy. Sociodemographic, clinical, obstetric, and periodontal variables were studied. The exposure variable was obesity (body mass index [BMI] ≥ 30), and the primary outcome was periodontitis staging versus periodontal healthy/gingivitis. Data were analysed and estimated by multinomial logistic regression models. RESULTS The present study screened 1086 pregnancies and analysed 972 women with a median age of 29 years; 36.8% were diagnosed as obese. 26.9% of patients were diagnosed as periodontal healthy or gingivitis, 5.5% with stage I periodontitis, 38.6% with stage II periodontitis, 24% with stage III periodontitis, and 5.1% with stage IV periodontitis. After identifying and adjusting for confounding variables (educational level and plaque index), obesity had a relative risk ratio (RRR) of 1.66 (95% CI: 1.05-2.64; p = 0.03) and 1.57 (95% CI: 1.09-2.27; p = 0.015) for stage III periodontitis compared to periodontal healthy/gingivitis and stage II periodontitis, respectively. CONCLUSION Besides the already known risk indicators for periodontitis (age, smoking, and educational level), our study suggests a relationship between obesity and periodontitis staging in pregnancy. CLINICAL RELEVANCE Obesity can alter host immune responses, leading to increased susceptibility to infections and overactive host immunity, which could influence the prevalence and severity of maternal periodontitis in pregnancy.
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Affiliation(s)
- Valeria Ramírez
- Department of Biomedical Sciences, Ethics, Research and Education, Faculty of Dentistry, Universidad de Los Andes, Santiago, Chile
| | - Laura Weber
- Department of Pathology and Conservative Dentistry, Faculty of Dentistry, Universidad de Los Andes, Av. Plaza 2501, Las Condes, 7620157, Santiago, Chile
| | - Marcela Hernández
- Department of Pathology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Ornella Realini
- Department of Pathology and Conservative Dentistry, Faculty of Dentistry, Universidad de Los Andes, Av. Plaza 2501, Las Condes, 7620157, Santiago, Chile
| | - María José Bendek
- Department of Pathology and Conservative Dentistry, Faculty of Dentistry, Universidad de Los Andes, Av. Plaza 2501, Las Condes, 7620157, Santiago, Chile
- PhD Program in Biomedicine, School of Medicine, Universidad de los Andes, Santiago, Chile
| | - Dolores Busso
- Laboratory of Reproductive Biology, Biomedical Research and Innovation Center, Universidad de los Andes, Santiago, Chile
| | - Anilei Hoare
- Laboratory of Oral Microbiology, Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Sebastián Enrique Illanes
- Laboratory of Reproductive Biology, Biomedical Research and Innovation Center, Universidad de los Andes, Santiago, Chile
- Department of Obstetrics and Gynecology, Faculty of Medicine, Universidad de Los Andes, Santiago, Chile
| | - Alejandra Chaparro
- Department of Pathology and Conservative Dentistry, Faculty of Dentistry, Universidad de Los Andes, Av. Plaza 2501, Las Condes, 7620157, Santiago, Chile.
- Biomedical Research and Innovation Center, Santiago, Chile.
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Arias A, Quiroz A, Santander N, Morselli E, Busso D. Implications of High-Density Cholesterol Metabolism for Oocyte Biology and Female Fertility. Front Cell Dev Biol 2022; 10:941539. [PMID: 36187480 PMCID: PMC9518216 DOI: 10.3389/fcell.2022.941539] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 06/01/2022] [Indexed: 11/28/2022] Open
Abstract
Cholesterol is an essential component of animal cells. Different regulatory mechanisms converge to maintain adequate levels of this lipid because both its deficiency and excess are unfavorable. Low cell cholesterol content promotes its synthesis and uptake from circulating lipoproteins. In contrast, its excess induces the efflux to high-density lipoproteins (HDL) and their transport to the liver for excretion, a process known as reverse cholesterol transport. Different studies suggest that an abnormal HDL metabolism hinders female fertility. HDL are the only lipoproteins detected in substantial amounts in follicular fluid (FF), and their size and composition correlate with embryo quality. Oocytes obtain cholesterol from cumulus cells via gap junctions because they cannot synthesize cholesterol de novo and lack HDL receptors. Recent evidence has supported the possibility that FF HDL play a major role in taking up excess unesterified cholesterol (UC) from the oocyte. Indeed, genetically modified mouse models with disruptions in reverse cholesterol transport, some of which show excessive circulating UC levels, exhibit female infertility. Cholesterol accumulation can affect the egg´s viability, as reported in other cell types, and activate the plasma membrane structure and activity of membrane proteins. Indeed, in mice deficient for the HDL receptor Scavenger Class B Type I (SR-B1), excess circulating HDL cholesterol and UC accumulation in oocytes impairs meiosis arrest and hinders the developmental capacity of the egg. In other cells, the addition of cholesterol activates calcium channels and dysregulates cell death/survival signaling pathways, suggesting that these mechanisms may link altered HDL cholesterol metabolism and infertility. Although cholesterol, and lipids in general, are usually not evaluated in infertile patients, one study reported high circulating UC levels in women showing longer time to pregnancy as an outcome of fertility. Based on the evidence described above, we propose the existence of a well-regulated and largely unexplored system of cholesterol homeostasis controlling traffic between FF HDL and oocytes, with significant implications for female fertility.
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Affiliation(s)
- Andreina Arias
- Laboratory of Nutrition, Metabolism and Reproduction, Research and Innovation Center, Program of Reproductive Biology, Universidad de Los Andes, Santiago, Chile
- Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alonso Quiroz
- Laboratory of Nutrition, Metabolism and Reproduction, Research and Innovation Center, Program of Reproductive Biology, Universidad de Los Andes, Santiago, Chile
- School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Nicolás Santander
- Instituto de Ciencias de la Salud, Universidad de O’Higgins, Rancagua, Chile
| | - Eugenia Morselli
- Department of Basic Sciences, Faculty of Medicine and Sciences, Universidad San Sebastián, Santiago, Chile
| | - Dolores Busso
- Laboratory of Nutrition, Metabolism and Reproduction, Research and Innovation Center, Program of Reproductive Biology, Universidad de Los Andes, Santiago, Chile
- IMPACT, Center of Interventional Medicine for Precision and Advanced Cellular Therapy, Santiago, Chile
- *Correspondence: Dolores Busso,
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Arias A, Saavedra F, Morselli E, Busso D. Intracellular cholesterol deposits associate with mitochondrial dysfunction and lipid storage abnormalities in infertile SR-B1 KO mice. Placenta 2022. [DOI: 10.1016/j.placenta.2022.03.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bendek MJ, Canedo-Marroquín G, Realini O, Retamal IN, Hernández M, Hoare A, Busso D, Monteiro LJ, Illanes SE, Chaparro A. Periodontitis and Gestational Diabetes Mellitus: A Potential Inflammatory Vicious Cycle. Int J Mol Sci 2021; 22:ijms222111831. [PMID: 34769262 PMCID: PMC8584134 DOI: 10.3390/ijms222111831] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 10/18/2021] [Revised: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 12/12/2022] Open
Abstract
Periodontitis is a chronic inflammatory immune disease associated with a dysbiotic state, influenced by keystone bacterial species responsible for disrupting the periodontal tissue homeostasis. Furthermore, the severity of periodontitis is determined by the interaction between the immune cell response in front of periodontitis-associated species, which leads to the destruction of supporting periodontal tissues and tooth loss in a susceptible host. The persistent bacterial challenge induces modifications in the permeability and ulceration of the sulcular epithelium, which facilitates the systemic translocation of periodontitis-associated bacteria into distant tissues and organs. This stimulates the secretion of pro-inflammatory molecules and a chronic activation of immune cells, contributing to a systemic pro-inflammatory status that has been linked with a higher risk of several systemic diseases, such as type 2 diabetes mellitus (T2DM) and gestational diabetes mellitus (GDM). Although periodontitis and GDM share the common feature of systemic inflammation, the molecular mechanistic link of this association has not been completely clarified. This review aims to examine the potential biological mechanisms involved in the association between periodontitis and GDM, highlighting the contribution of both diseases to systemic inflammation and the role of new molecular participants, such as extracellular vesicles and non-coding RNAs, which could act as novel molecular intercellular linkers between periodontal and placental tissues.
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Affiliation(s)
- María José Bendek
- Department of Periodontology, Centre for Biomedical Research, Faculty of Dentistry, Universidad de los Andes, Av. Plaza 2501, Las Condes, Santiago 7620157, Chile; (M.J.B.); (G.C.-M.); (O.R.); (I.N.R.)
| | - Gisela Canedo-Marroquín
- Department of Periodontology, Centre for Biomedical Research, Faculty of Dentistry, Universidad de los Andes, Av. Plaza 2501, Las Condes, Santiago 7620157, Chile; (M.J.B.); (G.C.-M.); (O.R.); (I.N.R.)
| | - Ornella Realini
- Department of Periodontology, Centre for Biomedical Research, Faculty of Dentistry, Universidad de los Andes, Av. Plaza 2501, Las Condes, Santiago 7620157, Chile; (M.J.B.); (G.C.-M.); (O.R.); (I.N.R.)
| | - Ignacio N. Retamal
- Department of Periodontology, Centre for Biomedical Research, Faculty of Dentistry, Universidad de los Andes, Av. Plaza 2501, Las Condes, Santiago 7620157, Chile; (M.J.B.); (G.C.-M.); (O.R.); (I.N.R.)
| | - Marcela Hernández
- Laboratory of Periodontal Biology and Department of Pathology and Oral Medicine, Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago 8380544, Chile;
| | - Anilei Hoare
- Laboratory of Oral Microbiology, Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Olivos 943, Independencia, Santiago 8380544, Chile;
| | - Dolores Busso
- Program in Biology of Reproduction, Centre for Biomedical Research and Innovation (CIIB), Universidad de los Andes, Santiago 8380544, Chile; (D.B.); (L.J.M.); (S.E.I.)
- IMPACT, Center of Interventional Medicine for Precision and Advanced Cellular Therapy, Santiago 8380544, Chile
| | - Lara J. Monteiro
- Program in Biology of Reproduction, Centre for Biomedical Research and Innovation (CIIB), Universidad de los Andes, Santiago 8380544, Chile; (D.B.); (L.J.M.); (S.E.I.)
- IMPACT, Center of Interventional Medicine for Precision and Advanced Cellular Therapy, Santiago 8380544, Chile
| | - Sebastián E. Illanes
- Program in Biology of Reproduction, Centre for Biomedical Research and Innovation (CIIB), Universidad de los Andes, Santiago 8380544, Chile; (D.B.); (L.J.M.); (S.E.I.)
- IMPACT, Center of Interventional Medicine for Precision and Advanced Cellular Therapy, Santiago 8380544, Chile
| | - Alejandra Chaparro
- Department of Periodontology, Centre for Biomedical Research, Faculty of Dentistry, Universidad de los Andes, Av. Plaza 2501, Las Condes, Santiago 7620157, Chile; (M.J.B.); (G.C.-M.); (O.R.); (I.N.R.)
- Correspondence: ; Tel.: +56-998376593
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6
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Quiroz A, Molina P, Santander N, Gallardo D, Rigotti A, Busso D. Ovarian cholesterol efflux: ATP-binding cassette transporters and follicular fluid HDL regulate cholesterol content in mouse oocytes†. Biol Reprod 2021; 102:348-361. [PMID: 31423535 DOI: 10.1093/biolre/ioz159] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 05/13/2019] [Revised: 10/30/2019] [Accepted: 08/10/2019] [Indexed: 11/13/2022] Open
Abstract
High density lipoproteins (HDL) take up cholesterol from peripheral tissues via ABC transporters and deliver it to the liver via scavenger receptor class B type I (SR-B1). HDL are the main lipoproteins present in follicular fluid (FF). They are thought to derive from plasma, but their origin is still controversial. SR-B1 knock-out (KO) mice have provided important evidence linking HDL metabolism and female fertility. These mice have cholesterol-rich circulating HDL and female infertility that can be restored by treating mice with the cholesterol-lowering drug probucol. Ovulated oocytes from SR-B1 KO females are dysfunctional and show excess cholesterol. The mechanisms explaining the contribution of FF HDL to oocyte cholesterol homeostasis are unknown. Here, using quantitation of filipin fluorescence we show that in SR-B1 KO ovaries, cholesterol excess is first observed in immature oocytes in antral follicles. By performing cross-transplant experiments between WT and apolipoprotein A-I deficient (ApoA-I KO) mice, which lack the main protein component of HDL, we provide evidence supporting the plasmatic origin of FF HDL. Also, we demonstrate that probucol treatment in SR-B1 KO females results in lowering of cholesterol content in their oocytes. Incubation of oocytes from SR-B1 KO mice with purified WT HDL reduces their cholesterol content, suggesting that HDL promote efflux of excess cholesterol from oocytes. In agreement with this hypothesis, we identified ABC transporters in oocytes and observed that ABCA1 KO oocytes have excess cholesterol and lower viability than WT oocytes.
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Affiliation(s)
- Alonso Quiroz
- Department of Nutrition, Diabetes and Metabolism, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Paz Molina
- Department of Nutrition, Diabetes and Metabolism, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Nicolás Santander
- Department of Nutrition, Diabetes and Metabolism, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Daniel Gallardo
- Department of Nutrition, Diabetes and Metabolism, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Attilio Rigotti
- Department of Nutrition, Diabetes and Metabolism, Pontificia Universidad Católica de Chile, Santiago, Chile.,Center of Molecular Nutrition and Chronic Diseases, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Dolores Busso
- Department of Nutrition, Diabetes and Metabolism, Pontificia Universidad Católica de Chile, Santiago, Chile
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Busso D, David A, Penailillo R, Echeverría G, Rigotti A, Kovalskys I, Gómez G, Cortés Sanabria LY, Yépez García MC, Pareja RG, Herrera-Cuenca M, Fisberg M. Intake of Vitamin E and C in Women of Reproductive Age: Results from the Latin American Study of Nutrition and Health (ELANS). Nutrients 2021; 13:1954. [PMID: 34200192 PMCID: PMC8229960 DOI: 10.3390/nu13061954] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 05/28/2021] [Accepted: 06/02/2021] [Indexed: 12/12/2022] Open
Abstract
Vitamin E was identified as a lipophilic compound essential to maintain rat pregnancy. Low vitamin E intake during early pregnancy associates with congenital malformations and embryonic loss in animals and with miscarriage and intrauterine growth restriction in humans. Vitamin E protects cell membranes from lipoperoxidation and exerts non-antioxidant activities. Its function can be restored by vitamin C; thus, intake and circulating levels of both micronutrients are frequently analyzed together. Although substantial vitamin E inadequacy was reported worldwide, its consumption in Latin America (LatAm) is mostly unknown. Using data from the Latin American Study of Nutrition and Health (Estudio Latinoamericano de Nutrición y Salud, ELANS), we evaluated vitamin E and C intake in women of reproductive age (WRA) from eight LatAm countries and identified their main food sources. Two non-consecutive 24-h dietary recalls in 3704 women aged from 15 to 49 years and living in urban locations showed low average intake of vitamin E (7.9 mg/day vs. estimated average requirement (EAR) of 12 mg/day) and adequate overall vitamin C consumption (95.5 mg/day vs. EAR of 60 mg/day). The mean regional inadequacy was 89.6% for vitamin E and 36.3% for vitamin C. The primary food sources of vitamin E were fats and oils, as well as vegetables. Vitamin C intake was explained mainly by the consumption of fruit juices, fruits, and vegetables. Combined deficient intake of both vitamins was observed in 33.7% of LatAm women. Although the implications of low antioxidant vitamins' consumption in WRA are still unclear, the combined deficient intake of both vitamins observed in one-third of ELANS participants underscores the need for further research on this topic.
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Affiliation(s)
- Dolores Busso
- Biomedical Research and Innovation Center, School of Medicine, Universidad de los Andes, Santiago 7550000, Chile;
| | - Andrea David
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago 8320000, Chile; (A.D.); (G.E.); (A.R.)
| | - Reyna Penailillo
- Biomedical Research and Innovation Center, School of Medicine, Universidad de los Andes, Santiago 7550000, Chile;
| | - Guadalupe Echeverría
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago 8320000, Chile; (A.D.); (G.E.); (A.R.)
- Center of Molecular Nutrition and Chronic Diseases, School of Medicine, Pontificia Universidad Católica de Chile, Santiago 8320000, Chile
| | - Attilio Rigotti
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago 8320000, Chile; (A.D.); (G.E.); (A.R.)
- Center of Molecular Nutrition and Chronic Diseases, School of Medicine, Pontificia Universidad Católica de Chile, Santiago 8320000, Chile
| | - Irina Kovalskys
- Carrera de Nutriciόn, Facultad de Ciencias Médicas, Pontificia Universidad Catόlica Argentina, Buenos Aires C1059ABF, Argentina;
| | - Georgina Gómez
- Departamento de Bioquímica, Escuela de Medicina, Universidad de Costa Rica, San José 94088, Costa Rica;
| | | | | | | | - Marianella Herrera-Cuenca
- Centro de Estudios del Desarrollo, Universidad Central de Venezuela (CENDES-UCV) and Fundación Bengoa, Caracas 1010, Venezuela;
| | - Mauro Fisberg
- Instituto Pensi, Fundação Jose Luiz Egydio Setubal, Hospital Infantil Sabara, São Paulo 04023062, Brazil;
- Centro de Excelencia em Nutrição e Dificuldades Alimentaes (CENDA) Instituto Pensi, Fundação José Luiz Egydio Setubal, Departamento de Pediatria, Universidade Federal de São Paulo, São Paulo 01239040, Brazil
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Rivera K, Quiñones V, Xavier A, Amigo L, Fernández-Galilea M, Carrasco G, Cabrera D, Arrese M, Busso D, Andia M, Rigotti A. HDL Receptor SR-B1 Deficiency Increased Inflammatory Dyslipidemia and Adipocyte Hypertrophy and Attenuated the Hepatic Steatosis in Murine Diet-Induced Obesity. Curr Dev Nutr 2020. [DOI: 10.1093/cdn/nzaa063_074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Objectives
We tested whether the scavenger receptor, class B type 1 (SR-B1), a physiologically relevant HDL receptor, modulates the metabolic and inflammatory phenotype of obese mice, accompanied by changes in adipocyte and hepatocyte lipid deposits.
Methods
Male SR-B1 knock-out (KO) mice and wild-type (WT) littermates were fed for 12 weeks with a high-fat diet (HFD, n = 12 per group) to induce obesity. Animals were euthanized after overnight food deprivation. Blood was obtained and adipose tissue and liver were removed. Plasma or frozen tissues were used for biochemical analyses or assessed by light microscopy and immunohistochemistry. Comparisons between WT and KO mice fed with HFD were performed and differences were considered statistically significant when P < 0.05.
Results
Compared to obese WT, obese HFD-fed SR-B1 KO mice showed increased plasma total cholesterol (p < 0.0001) and triglycerides (TG) (p < 0.01) as well as tumor necrosis factor-α (TNF-α) (p < 0.0001) levels. Also, these animals exhibited white fat with larger adipocytes (p < 0.0001) and increased macrophage-based crown-like structure formation (p < 0.01), compared to HFD-fed WT mice, revealing a more inflammatory adipose tissue. These changes in adipose tissue were associated with reduced hepatic steatosis: reduced hepatocyte lipid droplet area (p < 0.0001) and decreased liver TG content (p < 0.0001). In addition, obese SR-B1-deficient mice showed reduced hepatic peroxisome proliferator-activated receptor-γ (PPAR-γ) expression, more efficient hepatic fatty acid β-oxidation and increased very-low-density lipoprotein (VLDL)-TG secretion compared to obese HFD-fed WT mice Furthermore, liver fatty acid (FA) composition in obese SR-B1-deficient mice revealed a reduction in monounsaturated (MUFA) (p < 0.01), but an increase in polyunsaturated (PUFA) (p < 0.05), fatty acid content, compared to obese WT mice.
Conclusions
Our findings demonstrate that SR-B1 expression modulates high fat feeding-associated inflammatory dyslipidemia, adipocyte hypertrophy, and hepatic steatosis; key processes underlying the pathogenesis of highly prevalent chronic diseases, such as obesity and non-alcoholic fatty liver disease (NAFLD).
Funding Sources
FONDECYT 1,150,399, FONDECYT 1,180,525.
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Affiliation(s)
- Katherine Rivera
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile
| | - Veronica Quiñones
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile
| | - Aline Xavier
- Millennium Nucleus for Cardiovascular Magnetic Resonance and Biomedical Imaging Center, Department of Electrical Engineering, School of Engineering, Pontificia Universidad Católica de Chile
| | - Ludwig Amigo
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile
| | - Marta Fernández-Galilea
- Centre for Nutrition Research, School of Pharmacy and Nutrition, University of Navarra; IDISNA, Navarra's Health Research Institute
| | | | - Daniel Cabrera
- Department of Gastroenterology, School of Medicine, Pontificia Universidad Católica de Chile
| | - Marco Arrese
- Department of Gastroenterology, School of Medicine, Pontificia Universidad Católica de Chile
| | - Dolores Busso
- Biomedical Research and Innovation Center, Faculty of Medicine, Universidad de los Andes
| | - Marcelo Andia
- Millennium Nucleus for Cardiovascular Magnetic Resonance and Biomedical Imaging Center, Department of Electrical Engineering, School of Engineering, Pontificia Universidad Católica de Chile
| | - Attilio Rigotti
- Department of Nutrition, Diabetes and Metabolism; Millennium Nucleus for Cardiovascular Magnetic Resonance; Center of Molecular Nutrition and Chronic Diseases, School of Medicine, Pontificia Universidad Católica de Chile
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Contreras-Duarte S, Santander N, Birner-Gruenberger R, Wadsack C, Rigotti A, Busso D. High density lipoprotein cholesterol and proteome in SR-B1 KO mice: lost in precipitation. J Transl Med 2018; 16:309. [PMID: 30419936 PMCID: PMC6233513 DOI: 10.1186/s12967-018-1683-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 09/28/2018] [Accepted: 11/06/2018] [Indexed: 11/10/2022] Open
Abstract
Scavenger receptor class B type 1 (SR-B1) plays an essential role in high density lipoprotein (HDL) metabolism. SR-B1 deficient (SR-B1 KO) mice are prone to atherosclerosis and exhibit abnormally large, cholesterol-rich, dysfunctional HDL. In a recent issue of J Transl Med, Cao et al. described results of proteomics analyses of HDL isolated from wild-type (WT) and SR-B1 KO mice using precipitation of large lipoproteins with polyethylene glycol (PEG). They report abnormalities in SR-B1 KO HDL protein components that correlate with HDL function. In this commentary, we describe and discuss the differences in the results published by Cao et al. and those obtained in a recent study from our laboratory using shotgun proteomics of HDL of SR-B1 KO mice isolated by ultracentrifugation. We propose that different HDL purification procedures used may account for the discrepancies observed. We show that SR-B1 KO HDL purification using either PEG or dextran sulfate precipitation results in enrichment of small HDL subclasses, and may therefore underestimate alterations in lipoprotein composition or function. Compared to HDL obtained by ultracentrifugation, HDL isolated by PEG precipitation show a lower ApoE/ApoA-I proportion and reduced cholesterol content. HDL protein components described by Cao et al. or our laboratory are mostly inconsistent: only 33 HDL proteins were detected in both datasets, whereas a significant number of proteins were only identified by Cao et al. (n = 43) or Contreras-Duarte et al. (n = 26) datasets. The relative abundance of HDL-associated peptide and protein levels in WT vs SR-B1 HDL were also highly different in both datasets. This study indicates that caution must be taken when interpreting results from HDL isolated by chemical precipitation.
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Affiliation(s)
- Susana Contreras-Duarte
- Department of Nutrition, Diabetes and Metabolism, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Nicolás Santander
- Department of Nutrition, Diabetes and Metabolism, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ruth Birner-Gruenberger
- Institute of Pathology and Center of Medical Research, Medical University of Graz, Graz, Austria.,Austrian Center of Industrial Biotechnology, Medical University of Graz, Graz, Austria.,Omics Center, Graz, Austria
| | - Christian Wadsack
- Department of Obstetrics and Gynecology, Medical University of Graz, Graz, Austria
| | - Attilio Rigotti
- Department of Nutrition, Diabetes and Metabolism, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Dolores Busso
- Department of Nutrition, Diabetes and Metabolism, Pontificia Universidad Católica de Chile, Santiago, Chile.
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10
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Santander N, Lizama C, Murgas L, Contreras S, Martin AJM, Molina P, Quiroz A, Rivera K, Salas-Pérez F, Godoy A, Rigotti A, Busso D. Transcriptional profiling of embryos lacking the lipoprotein receptor SR-B1 reveals a regulatory circuit governing a neurodevelopmental or metabolic decision during neural tube closure. BMC Genomics 2018; 19:731. [PMID: 30290792 PMCID: PMC6173885 DOI: 10.1186/s12864-018-5110-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 07/03/2018] [Accepted: 09/24/2018] [Indexed: 12/20/2022] Open
Abstract
Background The high-density lipoprotein receptor SR-B1 mediates cellular uptake of several lipid species, including cholesterol and vitamin E. During early mouse development, SR-B1 is located in the maternal-fetal interface, where it facilitates vitamin E transport towards the embryo. Consequently, mouse embryos lacking SR-B1 are vitamin E-deficient, and around half of them fail to close the neural tube and show cephalic neural tube defects (NTD). Here, we used transcriptomic profiling to identify the molecular determinants of this phenotypic difference between SR-B1 deficient embryos with normal morphology or with NTD. Results We used RNA-Seq to compare the transcriptomic profile of three groups of embryos retrieved from SR-B1 heterozygous intercrosses: wild-type E9.5 embryos (WT), embryos lacking SR-B1 that are morphologically normal, without NTD (KO-N) and SR-B1 deficient embryos with this defect (KO-NTD). We identified over 1000 differentially expressed genes: down-regulated genes in KO-NTD embryos were enriched for functions associated to neural development, while up-regulated genes in KO-NTD embryos were enriched for functions related to lipid metabolism. Feeding pregnant dams a vitamin E-enriched diet, which prevents NTD in SR-B1 KO embryos, resulted in mRNA levels for those differentially expressed genes that were more similar to KO-N than to KO-NTD embryos. We used gene regulatory network analysis to identify putative transcriptional regulators driving the different embryonic expression profiles, and identified a regulatory circuit controlled by the androgen receptor that may contribute to this dichotomous expression profile in SR-B1 embryos. Supporting this possibility, the expression level of the androgen receptor correlated strongly with the expression of several genes involved in neural development and lipid metabolism. Conclusions Our analysis shows that normal and defective embryos lacking SR-B1 have divergent expression profiles, explained by a defined set of transcription factors that may explain their divergent phenotype. We propose that distinct expression profiles may be relevant during early development to support embryonic nutrition and neural tube closure. Electronic supplementary material The online version of this article (10.1186/s12864-018-5110-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nicolás Santander
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, 83300024, Santiago, CP, Chile
| | - Carlos Lizama
- Cardiovascular Research Institute, University of California, San Francisco, CA, USA
| | - Leandro Murgas
- Network Biology Laboratory, Center for Genomics and Bioinformatics, Faculty of Sciences, Universidad Mayor, Santiago, Chile
| | - Sebastián Contreras
- Network Biology Laboratory, Center for Genomics and Bioinformatics, Faculty of Sciences, Universidad Mayor, Santiago, Chile
| | - Alberto J M Martin
- Network Biology Laboratory, Center for Genomics and Bioinformatics, Faculty of Sciences, Universidad Mayor, Santiago, Chile
| | - Paz Molina
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, 83300024, Santiago, CP, Chile
| | - Alonso Quiroz
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, 83300024, Santiago, CP, Chile
| | - Katherine Rivera
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, 83300024, Santiago, CP, Chile
| | - Francisca Salas-Pérez
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, 83300024, Santiago, CP, Chile
| | - Alejandro Godoy
- Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile.,Department of Urology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Attilio Rigotti
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, 83300024, Santiago, CP, Chile.,Center of Molecular Nutrition and Chronic Diseases, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Dolores Busso
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, 83300024, Santiago, CP, Chile.
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11
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Contreras-Duarte S, Chen P, Andía M, Uribe S, Irarrázaval P, Kopp S, Kern S, Marsche G, Busso D, Wadsack C, Rigotti A. Attenuation of atherogenic apo B-48-dependent hyperlipidemia and high density lipoprotein remodeling induced by vitamin C and E combination and their beneficial effect on lethal ischemic heart disease in mice. Biol Res 2018; 51:34. [PMID: 30219096 PMCID: PMC6138920 DOI: 10.1186/s40659-018-0183-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 05/20/2018] [Accepted: 09/06/2018] [Indexed: 01/01/2023] Open
Abstract
Background and aims Atherosclerotic cardiovascular disease is highly prevalent and its underlying pathogenesis involves dyslipidemia including pro-atherogenic high density lipoprotein (HDL) remodeling. Vitamins C and E have been proposed as atheroprotective agents for cardiovascular disease management. However, their effects and benefits on high density lipoprotein function and remodeling are unknown. In this study, we evaluated the role of vitamin C and E on non HDL lipoproteins as well as HDL function and remodeling, along with their effects on inflammation/oxidation biomarkers and atherosclerosis in atherogenic diet-fed SR-B1 KO/ApoER61h/h mice. Methods and results Mice were pre-treated for 5 weeks before and during atherogenic diet feeding with vitamin C and E added to water and diet, respectively. Compared to a control group, combined vitamin C and E administration reduced serum total cholesterol and triglyceride levels by decreasing apo B-48-containing lipoproteins, remodeled HDL particles by reducing phospholipid as well as increasing PON1 and apo D content, and diminished PLTP activity and levels. Vitamin supplementation improved HDL antioxidant function and lowered serum TNF-α levels. Vitamin C and E combination attenuated atherogenesis and increased lifespan in atherogenic diet-fed SR-B1 KO/ApoER61h/h mice. Conclusions Vitamin C and E administration showed significant lipid metabolism regulating effects, including HDL remodeling and decreased levels of apoB-containing lipoproteins, in mice. In addition, this vitamin supplementation generated a cardioprotective effect in a murine model of severe and lethal atherosclerotic ischemic heart disease.
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Affiliation(s)
- S Contreras-Duarte
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Diagonal Paraguay #362 - 4º, Piso, 8330024, Santiago, Chile
| | - P Chen
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Diagonal Paraguay #362 - 4º, Piso, 8330024, Santiago, Chile
| | - M Andía
- Department of Radiology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.,Biomedical Imaging Center, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile.,Department of Electrical Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - S Uribe
- Department of Radiology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.,Biomedical Imaging Center, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile.,Department of Electrical Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - P Irarrázaval
- Biomedical Imaging Center, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile.,Department of Electrical Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - S Kopp
- Department of Obstetrics and Gynecology, Medical University of Graz, Graz, Austria
| | - S Kern
- Institute of Experimental and Clinical Pharmacology, Medical University of Graz, Graz, Austria
| | - G Marsche
- Institute of Experimental and Clinical Pharmacology, Medical University of Graz, Graz, Austria
| | - D Busso
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Diagonal Paraguay #362 - 4º, Piso, 8330024, Santiago, Chile
| | - C Wadsack
- Department of Obstetrics and Gynecology, Medical University of Graz, Graz, Austria
| | - A Rigotti
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Diagonal Paraguay #362 - 4º, Piso, 8330024, Santiago, Chile. .,Center of Molecular Nutrition and Chronic Diseases, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.
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12
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Busso D, Rigotti A. Blood lipids during pregnancy: A progressively appreciated subject in basic and clinical research. Atherosclerosis 2018; 276:163-165. [PMID: 30001810 DOI: 10.1016/j.atherosclerosis.2018.06.884] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 06/29/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Dolores Busso
- Departamento de Nutrición, Diabetes y Metabolismo, Escuela de Medicina, Pontificia Universidad Católica, Santiago, Chile
| | - Attilio Rigotti
- Departamento de Nutrición, Diabetes y Metabolismo, Escuela de Medicina, Pontificia Universidad Católica, Santiago, Chile; Centro de Nutrición Molecular y Enfermedades Crónicas, Escuela de Medicina, Pontificia Universidad Católica, Santiago, Chile.
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13
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Leiva A, Contreras-Duarte S, Amigo L, Sepúlveda E, Boric M, Quiñones V, Busso D, Rigotti A. Gugulipid causes hypercholesterolemia leading to endothelial dysfunction, increased atherosclerosis, and premature death by ischemic heart disease in male mice. PLoS One 2017; 12:e0184280. [PMID: 28910310 PMCID: PMC5598962 DOI: 10.1371/journal.pone.0184280] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 08/21/2017] [Indexed: 12/29/2022] Open
Abstract
For proper cholesterol metabolism, normal expression and function of scavenger receptor class B type I (SR-BI), a high-density lipoprotein (HDL) receptor, is required. Among the factors that regulate overall cholesterol homeostasis and HDL metabolism, the nuclear farnesoid X receptor plays an important role. Guggulsterone, a bioactive compound present in the natural product gugulipid, is an antagonist of this receptor. This natural product is widely used globally as a natural lipid-lowering agent, although its anti-atherogenic cardiovascular benefit in animal models or humans is unknown. The aim of this study was to determine the effects of gugulipid on cholesterol homeostasis and development of mild and severe atherosclerosis in male mice. For this purpose, we evaluated the impact of gugulipid treatment on liver histology, plasma lipoprotein cholesterol, endothelial function, and development of atherosclerosis and/or ischemic heart disease in wild-type mice; apolipoprotein E knockout mice, a model of atherosclerosis without ischemic complications; and SR-B1 knockout and atherogenic–diet-fed apolipoprotein E hypomorphic (SR-BI KO/ApoER61h/h) mice, a model of lethal ischemic heart disease due to severe atherosclerosis. Gugulipid administration was associated with histological abnormalities in liver, increased alanine aminotransferase levels, lower hepatic SR-BI content, hypercholesterolemia due to increased HDL cholesterol levels, endothelial dysfunction, enhanced atherosclerosis, and accelerated death in animals with severe ischemic heart disease. In conclusion, our data show important adverse effects of gugulipid intake on HDL metabolism and atherosclerosis in male mice, suggesting potential and unknown deleterious effects on cardiovascular health in humans. In addition, these findings reemphasize the need for rigorous preclinical and clinical studies to provide guidance on the consumption of natural products and regulation of their use in the general population.
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Affiliation(s)
- Andrea Leiva
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- * E-mail: (AL); (AR)
| | - Susana Contreras-Duarte
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ludwig Amigo
- Department of Gastroenterology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Esteban Sepúlveda
- Department of Physiology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Mauricio Boric
- Department of Physiology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Verónica Quiñones
- Department of Nutrition, Diabetes and Metabolism, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Dolores Busso
- Department of Nutrition, Diabetes and Metabolism, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Attilio Rigotti
- Department of Nutrition, Diabetes and Metabolism, Pontificia Universidad Católica de Chile, Santiago, Chile
- Center of Molecular Nutrition and Chronic Diseases, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- * E-mail: (AL); (AR)
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14
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Santander N, Lizama C, Quiroz A, Rigotti A, Busso D. RNA-Seq analysis reveals candidate genes that may explain neural tube defects in mouse embryos lacking SR-BI. Placenta 2017. [DOI: 10.1016/j.placenta.2017.01.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Cataldo LR, Mizgier ML, Bravo Sagua R, Jaña F, Cárdenas C, Llanos P, Busso D, Olmos P, Galgani JE, Santos JL, Cortés VA. Prolonged Activation of the Htr2b Serotonin Receptor Impairs Glucose Stimulated Insulin Secretion and Mitochondrial Function in MIN6 Cells. PLoS One 2017; 12:e0170213. [PMID: 28129327 PMCID: PMC5271329 DOI: 10.1371/journal.pone.0170213] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 01/02/2017] [Indexed: 11/23/2022] Open
Abstract
Aims Pancreatic β-cells synthesize and release serotonin (5 hydroxytryptamine, 5HT); however, the role of 5HT receptors on glucose stimulated insulin secretion (GSIS) and the mechanisms mediating this function is not fully understood. The aims of this study were to determine the expression profile of 5HT receptors in murine MIN6 β-cells and to examine the effects of pharmacological activation of 5HT receptor Htr2b on GSIS and mitochondrial function. Materials and Methods mRNA levels of 5HT receptors in MIN6 cells were quantified by RT qPCR. GSIS was assessed in MIN6 cells in response to global serotonergic activation with 5HT and pharmacological Htr2b activation or inhibition with BW723C86 or SB204741, respectively. In response to Htr2b activation also was evaluated the mRNA and protein levels of PGC1α and PPARy by RT-qPCR and western blotting and mitochondrial function by oxygen consumption rate (OCR) and ATP cellular content. Results We found that mRNA levels of most 5HT receptors were either very low or undetectable in MIN6 cells. By contrast, Htr2b mRNA was present at moderate levels in these cells. Preincubation (6 h) of MIN6 cells with 5HT or BW723C86 reduced GSIS and the effect of 5HT was prevented by SB204741. Preincubation with BW723C86 increased PGC1α and PPARy mRNA and protein levels and decreased mitochondrial respiration and ATP content in MIN6 cells. Conclusions Our results indicate that prolonged Htr2b activation in murine β-cells decreases glucose-stimulated insulin secretion and mitochondrial activity by mechanisms likely dependent on enhanced PGC1α/PPARy expression.
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Affiliation(s)
- Luis Rodrigo Cataldo
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - María L. Mizgier
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Roberto Bravo Sagua
- Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile
| | - Fabián Jaña
- Anatomy and Developmental Biology Program, Institute of Biomedical Sciences, University of Chile, Santiago, Chile
| | - César Cárdenas
- Anatomy and Developmental Biology Program, Institute of Biomedical Sciences, University of Chile, Santiago, Chile
- Geroscience Center for Brain Health and Metabolism, Santiago, Chile
- Buck Institute for Research on Aging, Novato, CA, United States of America
| | - Paola Llanos
- Institute for Research in Dental Sciences, School of Odontology, University of Chile, Santiago, Chile
| | - Dolores Busso
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pablo Olmos
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - José E. Galgani
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- UDA-Health Sciences, Nutrition and Dietetic Program, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - José L. Santos
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Víctor A. Cortés
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- * E-mail:
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16
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Olmos PR, Borzone GR, Berkowitz L, Mertens N, Busso D, Santos JL, Poblete JA, Vera C, Belmar C, Goldenberg D, Samith B, Acosta AM, Escalona M. Preventive letter: doubling the return rate after gestational diabetes mellitus. Matern Child Health J 2016; 19:939-44. [PMID: 25269853 DOI: 10.1007/s10995-014-1614-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
To measure the impact of a "Preventive Letter" designed to encourage the return of gestational diabetes mellitus (GDM) mothers to follow up visit after delivery, in the context of a worldwide concern about low return rates after delivery of these patients. Mothers with GDM require medical evaluation and an oral glucose tolerance test (OGTT) 6 weeks after delivery, in order to: [a] confirm remission of GDM and [b] provide advice on the prevention of type 2 diabetes. In the year 2003 we developed a "Preventive Letter", containing three aspects: [a] current treatment, [b] suggested management during labor, and [c] a stapled laboratory order for OGTT to be performed 6 weeks after delivery. The return rate after delivery was assessed in two groups of GDM mothers: [a] "Without Preventive Letter" (n = 253), and "With Preventive Letter" (n = 215). Both groups, similar with respect to age (33.0 ± 5.4 and 32.3 ± 4.9 years respectively, p = 0.166) and education time (14.9 ± 1.8 and 15.0 ± 1.8 years respectively, p = 0.494), showed a significant difference in the 1-year return rate after delivery, as assessed by the Kaplan-Meier test: 32.0 % for the group "Without Preventive Letter", and 76.0 % for the group "With Preventive Letter" (p < 0.001). The 1-year return rate after delivery of GDM mothers was 2.4 times higher in the group "With Preventive Letter" than in the group without it. We believe that this low-cost approach could be useful in other institutions caring for pregnant women with diabetes.
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Affiliation(s)
- Pablo R Olmos
- Department of Nutrition, Pontificia Universidad Católica de Chile, Santiago, Chile,
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17
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Cataldo LR, Mizgier ML, Busso D, Olmos P, Galgani JE, Valenzuela R, Mezzano D, Aranda E, Cortés VA, Santos JL. Serotonin- and Dopamine-Related Gene Expression in db/db Mice Islets and in MIN6 β-Cells Treated with Palmitate and Oleate. J Diabetes Res 2016; 2016:3793781. [PMID: 27366756 PMCID: PMC4913013 DOI: 10.1155/2016/3793781] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 04/26/2016] [Accepted: 05/10/2016] [Indexed: 12/20/2022] Open
Abstract
High circulating nonesterified fatty acids (NEFAs) concentration, often reported in diabetes, leads to impaired glucose-stimulated insulin secretion (GSIS) through not yet well-defined mechanisms. Serotonin and dopamine might contribute to NEFA-dependent β-cell dysfunction, since extracellular signal of these monoamines decreases GSIS. Moreover, palmitate-treated β-cells may enhance the expression of the serotonin receptor Htr2c, affecting insulin secretion. Additionally, the expression of monoamine-oxidase type B (Maob) seems to be lower in islets from humans and mice with diabetes compared to nondiabetic islets, which may lead to increased monoamine concentrations. We assessed the expression of serotonin- and dopamine-related genes in islets from db/db and wild-type (WT) mice. In addition, the effect of palmitate and oleate on the expression of such genes, 5HT content, and GSIS in MIN6 β-cell was determined. Lower Maob expression was found in islets from db/db versus WT mice and in MIN6 β-cells in response to palmitate and oleate treatment compared to vehicle. Reduced 5HT content and impaired GSIS in response to palmitate (-25%; p < 0.0001) and oleate (-43%; p < 0.0001) were detected in MIN6 β-cells. In conclusion, known defects of GSIS in islets from db/db mice and MIN6 β-cells treated with NEFAs are accompanied by reduced Maob expression and reduced 5HT content.
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Affiliation(s)
- L. R. Cataldo
- Departamento de Nutrición, Diabetes y Metabolismo, Escuela de Medicina, Pontificia Universidad Católica de Chile, 8331150 Santiago, Chile
- Facultad de Medicina, Universidad de los Andes, 7620001 Santiago, Chile
| | - M. L. Mizgier
- Departamento de Nutrición, Diabetes y Metabolismo, Escuela de Medicina, Pontificia Universidad Católica de Chile, 8331150 Santiago, Chile
| | - D. Busso
- Departamento de Nutrición, Diabetes y Metabolismo, Escuela de Medicina, Pontificia Universidad Católica de Chile, 8331150 Santiago, Chile
| | - P. Olmos
- Departamento de Nutrición, Diabetes y Metabolismo, Escuela de Medicina, Pontificia Universidad Católica de Chile, 8331150 Santiago, Chile
| | - J. E. Galgani
- Departamento de Nutrición, Diabetes y Metabolismo, Escuela de Medicina, Pontificia Universidad Católica de Chile, 8331150 Santiago, Chile
- UDA-Ciencias de la Salud, Carrera de Nutrición y Dietética, Escuela de Medicina, Pontificia Universidad Católica de Chile, 8331150 Santiago, Chile
| | - R. Valenzuela
- Departamento de Nutrición, Facultad de Medicina, Universidad de Chile, 7550367 Santiago, Chile
| | - D. Mezzano
- Laboratorio de Hemostasia, Escuela de Medicina, Pontificia Universidad Católica de Chile, 8331150 Santiago, Chile
| | - E. Aranda
- Laboratorio de Hemostasia, Escuela de Medicina, Pontificia Universidad Católica de Chile, 8331150 Santiago, Chile
| | - V. A. Cortés
- Departamento de Nutrición, Diabetes y Metabolismo, Escuela de Medicina, Pontificia Universidad Católica de Chile, 8331150 Santiago, Chile
| | - J. L. Santos
- Departamento de Nutrición, Diabetes y Metabolismo, Escuela de Medicina, Pontificia Universidad Católica de Chile, 8331150 Santiago, Chile
- *J. L. Santos:
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18
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Awad F, Contreras-Duarte S, Molina P, Quiñones V, Serrano V, Abbott E, Maiz A, Busso D, Rigotti A. [ANTIOXIDANT DYSFUNCTIONALITY OF HIGH-DENSITY LIPOPROTEINS (HDL) IN DECOMPENSATED DIABETIC PATIENTS]. NUTR HOSP 2015; 32:1131-8. [PMID: 26319830 DOI: 10.3305/nh.2015.32.3.9340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
INTRODUCTION high density lipoproteins (HDL) have important cardiovascular protective effects mediated by their role in reverse cholesterol transport as well as other functional activities, including significant anti-inflammatory and antioxidant properties. It has been shown that HDL anti-inflammatory and antioxidant functions are defective in metabolically stable diabetic patients; however they have not been evaluated during a hyperglycemic crisis. AIM to determine the antioxidant activity of HDL during a severe diabetic decompensation and to analyze whether this function is restored after resolution of the acute event. METHODS the antioxidant activity of HDL was measured in vitro by a fluorescent assay in plasma samples obtained from diabetic patients with acute metabolic decompensation at admission, recovery within the hospital and follow-up in ambulatory care. As a comparison, HDL particles from some healthy subjects were used as controls. RESULTS the HDL antioxidant function was significantly reduced in patients during an acute diabetic decompensation compared with the control group, and was gradually restored reaching normal values during the ambulatory follow-up. Hyperglycemic crisis also showed low plasma paraoxonase-1 activity, which increased significantly during at follow-up. CONCLUSION HDL particles isolated from acute diabetic descompensated patients exhibit a significantly and reversibly low antioxidant capacity, which is probably due to a reduced paraoxonase-1 activity.
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Affiliation(s)
- Fernanda Awad
- Departamento de Nutrición, Diabetes y Metabolismo. Pontificia Universidad Católica de Chile, Santiago. (Chile)..
| | - Susana Contreras-Duarte
- Departamento de Nutrición, Diabetes y Metabolismo. Pontificia Universidad Católica de Chile, Santiago. (Chile)..
| | - Patricia Molina
- Departamento de Nutrición, Diabetes y Metabolismo. Pontificia Universidad Católica de Chile, Santiago. (Chile)..
| | - Verónica Quiñones
- Departamento de Nutrición, Diabetes y Metabolismo. Pontificia Universidad Católica de Chile, Santiago. (Chile)..
| | - Valentina Serrano
- Departamento de Nutrición, Diabetes y Metabolismo. Pontificia Universidad Católica de Chile, Santiago. (Chile)..
| | - Eduardo Abbott
- Departamento de Medicina Interna. Pontificia Universidad Católica de Chile, Santiago. (Chile)..
| | - Alberto Maiz
- Departamento de Nutrición, Diabetes y Metabolismo. Pontificia Universidad Católica de Chile, Santiago. (Chile)..
| | - Dolores Busso
- Departamento de Nutrición, Diabetes y Metabolismo. Pontificia Universidad Católica de Chile, Santiago. (Chile)..
| | - Attilio Rigotti
- Departamento de Nutrición, Diabetes y Metabolismo. Centro de Nutrición Molecular y Enfermedades Crónicas. Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago. (Chile)..
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Santander N, Pérez D, Echeverría G, Mendoza C, Cautivo K, Rigotti A, Busso D. Involvement of HDL receptor SR-BI-mediated vitamin e uptake in murine neural tube closure. Placenta 2015. [DOI: 10.1016/j.placenta.2015.01.476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Garcés M, Chávez J, Villalobos-Labra R, Westermeier F, Sáez P, Salas-Pérez F, Cautivo K, Busso D, Varas J, San Martin S, Sobrevia L, Farías-Jofré M. High fat diet in mice induces endoplasmic reticulum stress in livers of their offspring. Placenta 2015. [DOI: 10.1016/j.placenta.2015.01.487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Santander N, Rigotti A, Busso D. Impact of high density lipoprotein metabolism in mouse embryo physiology. Placenta 2015. [DOI: 10.1016/j.placenta.2015.01.398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Salas-Pérez F, Berkowitz L, Cautivo K, Rigotti A, Farías M, Moreno R, Busso D. Role of prenatal exposure to environmental pollutants and maternal obesity in fetal programming of chronic diseases in mice. Placenta 2015. [DOI: 10.1016/j.placenta.2015.01.482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Busso D, Oñate-Alvarado MJ, Balboa E, Castro J, Lizama C, Morales G, Vargas S, Härtel S, Moreno RD, Zanlungo S. Spermatozoa from mice deficient in Niemann-Pick disease type C2 (NPC2) protein have defective cholesterol content and reduced in vitro fertilising ability. Reprod Fertil Dev 2014; 26:609-21. [PMID: 24709320 DOI: 10.1071/rd12059] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2012] [Accepted: 04/03/2013] [Indexed: 12/16/2022] Open
Abstract
The cholesterol content of the sperm membrane is regulated during both maturation in the epididymis and capacitation in the female tract, two processes required for the spermatozoa to acquire their fertilising ability. Because Niemann-Pick disease, type C2 (NPC2) protein is one of the most abundant components of the epididymal fluid and contains a functional cholesterol-binding site that can transfer cholesterol between membranes, it has been suggested for years that NPC2 could be involved in the regulation of cholesterol levels in spermatozoa during epididymal maturation. In the present study, western blot and immunohistochemistry analyses demonstrated significant levels of NPC2 in the mouse epididymal epithelium. Epididymal spermatozoa obtained from NPC2(-/-) mice were morphologically normal and had normal motility parameters, but had a reduced cholesterol content compared with that of wild-type (WT) spermatozoa, as determined by both biochemical and by flow cytometry analyses. These results suggest that NPC2 could be involved in regulating cholesterol levels in spermatozoa during epididymal maturation. To understand the relevance of epididymal NPC2 for sperm function, the ability of spermatozoa to undergo events influenced by epididymal maturation, such as capacitation and fertilisation, were compared between WT and NPC2(-/-) mice. Capacitated NPC2(-/-) spermatozoa exhibited defective tyrosine phosphorylation patterns and a reduced ability to fertilise cumulus-oocyte complexes compared with WT spermatozoa, supporting the relevance of mouse epididymal NPC2 for male fertility.
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Affiliation(s)
- Dolores Busso
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica. Avda. Bernardo O'Higgins 340. 8331150 Santiago, Chile
| | - María José Oñate-Alvarado
- Department of Physiology, Faculty of Biological Sciences, Pontificia Universidad Católica. Avda. Bernardo O'Higgins 340. 8331150 Santiago, Chile
| | - Elisa Balboa
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica. Avda. Bernardo O'Higgins 340. 8331150 Santiago, Chile
| | - Juan Castro
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica. Avda. Bernardo O'Higgins 340. 8331150 Santiago, Chile
| | - Carlos Lizama
- Department of Physiology, Faculty of Biological Sciences, Pontificia Universidad Católica. Avda. Bernardo O'Higgins 340. 8331150 Santiago, Chile
| | - Gabriela Morales
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica. Avda. Bernardo O'Higgins 340. 8331150 Santiago, Chile
| | - Susana Vargas
- Laboratory for Scientific Image Analysis (SCIAN-Lab), Program of Anatomy and Developmental Biology, Instituto de Ciencias Biomédicas ICBM, Faculty of Medicine, Universidad de Chile, Avda. Independencia 1027. 8389100 Santiago, Chile
| | - Steffen Härtel
- Laboratory for Scientific Image Analysis (SCIAN-Lab), Program of Anatomy and Developmental Biology, Instituto de Ciencias Biomédicas ICBM, Faculty of Medicine, Universidad de Chile, Avda. Independencia 1027. 8389100 Santiago, Chile
| | - Ricardo D Moreno
- Department of Physiology, Faculty of Biological Sciences, Pontificia Universidad Católica. Avda. Bernardo O'Higgins 340. 8331150 Santiago, Chile
| | - Silvana Zanlungo
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica. Avda. Bernardo O'Higgins 340. 8331150 Santiago, Chile
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Orellana JA, Busso D, Ramírez G, Campos M, Rigotti A, Eugenín J, von Bernhardi R. Prenatal nicotine exposure enhances Cx43 and Panx1 unopposed channel activity in brain cells of adult offspring mice fed a high-fat/cholesterol diet. Front Cell Neurosci 2014; 8:403. [PMID: 25520621 PMCID: PMC4251442 DOI: 10.3389/fncel.2014.00403] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [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: 07/22/2014] [Accepted: 11/08/2014] [Indexed: 01/06/2023] Open
Abstract
Nicotine, the most important neuroteratogen of tobacco smoke, can reproduce brain and cognitive disturbances per se when administered prenatally. However, it is still unknown if paracrine signaling among brain cells participates in prenatal nicotine-induced brain impairment of adult offspring. Paracrine signaling is partly mediated by unopposed channels formed by connexins hemichannels (HCs) and pannexins serving as aqueous pores permeable to ions and small signaling molecules, allowing exchange between the intra- and extracellular milieus. Our aim was to address whether prenatal nicotine exposure changes the activity of those channels in adult mice offspring under control conditions or subjected to a second challenge during young ages: high-fat/cholesterol (HFC) diet. To induce prenatal exposure to nicotine, osmotic minipumps were implanted in CF1 pregnant mice at gestational day 5 to deliver nicotine bitartrate or saline (control) solutions. After weaning, offspring of nicotine-treated or untreated pregnant mice were fed ad libitum with chow or HFC diets for 8 weeks. The functional state of connexin 43 (Cx43) and pannexin 1 (Panx1) unopposed channels was evaluated by dye uptake experiments in hippocampal slices from 11-week-old mice. We found that prenatal nicotine increased the opening of Cx43 HCs in astrocytes, and Panx1 channels in microglia and neurons only if offspring mice were fed with HFC diet. Blockade of inducible nitric oxide synthase (iNOS), cyclooxygenase 2 (COX2) and prostaglandin E receptor 1 (EP1), ionotropic ATP receptor type 7 (P2X7) and NMDA receptors, showed differential inhibition of prenatal nicotine-induced channel opening in glial cells and neurons. Importantly, inhibition of the above mentioned enzymes and receptors, or blockade of Cx43 and Panx1 unopposed channels greatly reduced adenosine triphosphate (ATP) and glutamate release from hippocampal slices of prenatally nicotine-exposed offspring. We propose that unregulated gliotransmitter release through Cx43 and Panx1 unopposed channels may participate in brain alterations observed in offspring of mothers exposed to tobacco smoke during pregnancy.
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Affiliation(s)
- Juan A Orellana
- Departamento de Neurología, Escuela de Medicina, Pontificia Universidad Católica de Chile Santiago, Chile
| | - Dolores Busso
- Departamento de Nutrición, Diabetes y Metabolismo, Escuela de Medicina, Pontificia Universidad Católica de Chile Santiago, Chile ; Centro de Nutrición Molecular y Enfermedades Crónicas, Escuela de Medicina, Pontificia Universidad Católica de Chile Santiago, Chile
| | - Gigliola Ramírez
- Departamento de Neurología, Escuela de Medicina, Pontificia Universidad Católica de Chile Santiago, Chile
| | - Marlys Campos
- Laboratorio de Sistemas Neurales, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile Santiago, Chile
| | - Attilio Rigotti
- Departamento de Nutrición, Diabetes y Metabolismo, Escuela de Medicina, Pontificia Universidad Católica de Chile Santiago, Chile ; Centro de Nutrición Molecular y Enfermedades Crónicas, Escuela de Medicina, Pontificia Universidad Católica de Chile Santiago, Chile
| | - Jaime Eugenín
- Laboratorio de Sistemas Neurales, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile Santiago, Chile
| | - Rommy von Bernhardi
- Departamento de Neurología, Escuela de Medicina, Pontificia Universidad Católica de Chile Santiago, Chile
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Olmos PR, Rigotti A, Busso D, Berkowitz L, Santos JL, Borzone GR, Poblete JA, Vera C, Belmar C, Goldenberg D, Samith B, Acosta AM, Escalona M, Niklitschek I, Mandiola JR, Mertens N. Maternal hypertriglyceridemia: A link between maternal overweight-obesity and macrosomia in gestational diabetes. Obesity (Silver Spring) 2014; 22:2156-63. [PMID: 24957884 DOI: 10.1002/oby.20816] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 05/30/2014] [Indexed: 11/10/2022]
Abstract
OBJECTIVE Infants born from overweight and obese mothers with glucose-controlled gestational diabetes (GDM) tend to be large-for-gestational age (LGA). It is hypothesized that this is due to an excessive rise in maternal triglyceride levels. METHODS Two-hundred and seventy nine singleton GDM pregnancies were divided into three groups according to prepregnancy BMI: normal weight (BMI = 20-24.9; n = 128), overweight (BMI = 25-29.9; n = 105), and obese (BMI ≥ 30; n = 46). Individual z-scores (ZS) of maternal triglycerides and of newborn weight (NWZS) were calculated as deviations from published 50th percentiles. Mean z-scores (MZS) were the average of triglyceride ZSs. MZS of triglycerides, HbA1c and NWZS were compared. Variables are expressed as mean ± SD. RESULTS In the three groups respectively: LGA (%) = 10.1%, 19.0% and 30.4% (P = 0.015). Birth weight (g) = 3274.2 ± 501.3, 3342.4 ± 620.2 and 3366.3±644.7 (RSPEARMAN = 0.111, P = 0.027). HbA1c (%) = 5.2 ± 0.39, 5.3 ± 0.50 and 5.4 ± 0.47 (P = NS). Triglyceride MZS = 1.20 ± 1.13, 1.52 ± 1.37 and 1.62 ± 1.42 (RSPEARMAN = 0.116, P = 0.024). Correlations between triglyceride MZS and NWZS were, respectively: r = 0.12 (P = NS), r = 0.42 (P <0.001), and r = 0.47 (P < 0.001). CONCLUSIONS In overweight and obese GDM mothers, maternal triglycerides are partially responsible for LGA infants despite good maternal glucose control during pregnancy.
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Affiliation(s)
- Pablo R Olmos
- Department of Obstetrics & Gynecology, College of Medicine, Pontificia Universidad Católica de Chile, Alameda, 340, Santiago, Chile; Department of Nutrition, College of Medicine, Pontificia Universidad Católica de Chile, Alameda, 340, Santiago, Chile
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Contreras-Duarte S, Varas P, Awad F, Busso D, Rigotti A. Papel protector de las lipoproteínas de alta densidad en sepsis: aspectos básicos e implicancias clínicas. Rev Chilena Infectol 2014; 31:34-43. [DOI: 10.4067/s0716-10182014000100005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Accepted: 11/21/2013] [Indexed: 11/17/2022] Open
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Maldera JA, Weigel Munoz M, Chirinos M, Busso D, GE Raffo F, Battistone MA, Blaquier JA, Larrea F, Cuasnicu PS. Human fertilization: epididymal hCRISP1 mediates sperm-zona pellucida binding through its interaction with ZP3. Mol Hum Reprod 2013; 20:341-9. [DOI: 10.1093/molehr/gat092] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Olmos P, Martelo G, Reimer V, Rigotti A, Busso D, Belmar C, González R, Goldenberg D, Samith B, Santos JL, Escalona M, Quezada T, Faúndez J, Nicklitschek I. La hipótesis de Pedersen no es suficiente: Otros nutrientes además de la glucosaexplicarían la macrosomía fetal enpacientes diabéticas gestacionales consobrepeso y buen control glicémico. Rev Med Chil 2013; 141:1441-8. [DOI: 10.4067/s0034-98872013001100011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Accepted: 12/06/2012] [Indexed: 11/17/2022]
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Curia CA, Ernesto JI, Stein P, Busso D, Schultz RM, Cuasnicu PS, Cohen DJ. Fertilization induces a transient exposure of phosphatidylserine in mouse eggs. PLoS One 2013; 8:e71995. [PMID: 23951277 PMCID: PMC3737209 DOI: 10.1371/journal.pone.0071995] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Accepted: 07/10/2013] [Indexed: 01/01/2023] Open
Abstract
Phosphatidylserine (PS) is normally localized to the inner leaflet of the plasma membrane and the requirement of PS translocation to the outer leaflet in cellular processes other than apoptosis has been demonstrated recently. In this work we investigated the occurrence of PS mobilization in mouse eggs, which express flippase Atp8a1 and scramblases Plscr1 and 3, as determined by RT-PCR; these enzyme are responsible for PS distribution in cell membranes. We find a dramatic increase in binding of flouresceinated-Annexin-V, which specifically binds to PS, following fertilization or parthenogenetic activation induced by SrCl2 treatment. This increase was not observed when eggs were first treated with BAPTA-AM, indicating that an increase in intracellular Ca2+ concentration was required for PS exposure. Fluorescence was observed over the entire egg surface with the exception of the regions overlying the meiotic spindle and sperm entry site. PS exposure was also observed in activated eggs obtained from CaMKIIγ null females, which are unable to exit metaphase II arrest despite displaying Ca2+ spikes. In contrast, PS exposure was not observed in TPEN-activated eggs, which exit metaphase II arrest in the absence of Ca2+ release. PS exposure was also observed when eggs were activated with ethanol but not with a Ca2+ ionophore, suggesting that the Ca2+ source and concentration are relevant for PS exposure. Last, treatment with cytochalasin D, which disrupts microfilaments, or jasplakinolide, which stabilizes microfilaments, prior to egg activation showed that PS externalization is an actin-dependent process. Thus, the Ca2+ rise during egg activation results in a transient exposure of PS in fertilized eggs that is not associated with apoptosis.
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Affiliation(s)
- Claudio A. Curia
- Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científico y Técnicas, Buenos Aires, Argentina
| | - Juan I. Ernesto
- Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científico y Técnicas, Buenos Aires, Argentina
| | - Paula Stein
- Department of Biology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Dolores Busso
- Department of Nutrition, Diabetes and Metabolism, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Richard M. Schultz
- Department of Biology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Patricia S. Cuasnicu
- Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científico y Técnicas, Buenos Aires, Argentina
| | - Débora J. Cohen
- Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científico y Técnicas, Buenos Aires, Argentina
- * E-mail:
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Santander NG, Contreras-Duarte S, Awad MF, Lizama C, Passalacqua I, Rigotti A, Busso D. Developmental abnormalities in mouse embryos lacking the HDL receptor SR-BI. Hum Mol Genet 2013. [DOI: 10.1093/hmg/ddt129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Cortes VA, Busso D, Mardones P, Maiz A, Arteaga A, Nervi F, Rigotti A. Retracted: Advances in the physiological and pathological implications of cholesterol. Biol Rev Camb Philos Soc 2013; 88:825-43. [DOI: 10.1111/brv.12025] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 01/22/2013] [Accepted: 01/25/2013] [Indexed: 01/07/2023]
Affiliation(s)
- Victor A. Cortes
- Department of Nutrition Diabetes and Metabolism; School of Medicine; Faculty of Medicine; Pontificia Universidad Catolica de Chile; Marcoleta 367 Edifico de Gastroenterologia 4 piso Santiago Chile
| | - Dolores Busso
- Department of Nutrition Diabetes and Metabolism; School of Medicine; Faculty of Medicine; Pontificia Universidad Catolica de Chile; Marcoleta 367 Edifico de Gastroenterologia 4 piso Santiago Chile
| | - Pablo Mardones
- Department of Nutrition Diabetes and Metabolism; School of Medicine; Faculty of Medicine; Pontificia Universidad Catolica de Chile; Marcoleta 367 Edifico de Gastroenterologia 4 piso Santiago Chile
| | - Alberto Maiz
- Department of Nutrition Diabetes and Metabolism; School of Medicine; Faculty of Medicine; Pontificia Universidad Catolica de Chile; Marcoleta 367 Edifico de Gastroenterologia 4 piso Santiago Chile
| | - Antonio Arteaga
- Department of Nutrition Diabetes and Metabolism; School of Medicine; Faculty of Medicine; Pontificia Universidad Catolica de Chile; Marcoleta 367 Edifico de Gastroenterologia 4 piso Santiago Chile
| | - Flavio Nervi
- Department of Gastroenterology; School of Medicine; Faculty of Medicine; Pontificia Universidad Catolica de Chile; Santiago Chile
| | - Attilio Rigotti
- Department of Nutrition Diabetes and Metabolism; School of Medicine; Faculty of Medicine; Pontificia Universidad Catolica de Chile; Marcoleta 367 Edifico de Gastroenterologia 4 piso Santiago Chile
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Santander NG, Contreras-Duarte S, Awad MF, Lizama C, Passalacqua I, Rigotti A, Busso D. Developmental abnormalities in mouse embryos lacking the HDL receptor SR-BI. Hum Mol Genet 2012; 22:1086-96. [DOI: 10.1093/hmg/dds510] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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Munoz MW, Ernesto JI, Bluguermann C, Busso D, Battistone MA, Cohen DJ, Cuasnicu PS. Evaluation of Testicular Sperm CRISP2 as a Potential Target for Contraception. ACTA ACUST UNITED AC 2012; 33:1360-70. [DOI: 10.2164/jandrol.112.016725] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Amigo L, Quiñones V, Leiva A, Busso D, Zanlungo S, Nervi F, Rigotti A. Apolipoprotein A-I deficiency does not affect biliary lipid secretion and gallstone formation in mice. Liver Int 2011; 31:263-71. [PMID: 21134113 DOI: 10.1111/j.1478-3231.2010.02421.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
BACKGROUND/AIMS Apolipoprotein A-I (apo A-I) is the main protein component of plasma high-density lipoproteins (HDL) and a key determinant of HDL cholesterol levels and metabolism. The relevance of HDL in controlling the traffic of cholesterol from plasma into bile has been partially addressed. The aim of this study was to evaluate the role of apo A-I expression in controlling the secretion of biliary lipids as well as the risk of gallstone disease in vivo. METHODS We evaluated biliary lipid secretion and bile acid homeostasis in mice deficient for apo A-I compared with wild-type animals when fed with low- or high-cholesterol diets. In addition, we assessed the importance of murine apoA-I expression for gallstone formation after feeding a lithogenic diet. RESULTS Bile acid pool size and faecal excretion were within the normal range in chow- and cholesterol-fed apo A-I knockout (KO) mice. Basal biliary cholesterol secretion was comparable and increased similarly in both murine strains after cholesterol feeding. Lithogenic diet-fed apo A-I KO mice exhibited an impaired hypercholesterolaemic response owing to a lower increase in cholesterol levels transported in large lipoproteins. However, the lack of apo A-I expression did not affect biliary cholesterol precipitation or gallstone formation in lithogenic diet-fed mice. CONCLUSIONS These findings indicate that biliary lipid secretion, bile acid metabolism and gallstone formation are independent of apo A-I expression and plasma HDL cholesterol levels in mice.
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Affiliation(s)
- Ludwig Amigo
- Departamento de Gastroenterología, Facultad de Medicina, Pontificia Universidad Católica, Santiago, Chile
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Busso D, Oñate-Alvarado MJ, Balboa E, Zanlungo S, Moreno RD. Female infertility due to anovulation and defective steroidogenesis in NPC2 deficient mice. Mol Cell Endocrinol 2010; 315:299-307. [PMID: 19883728 DOI: 10.1016/j.mce.2009.10.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2009] [Revised: 10/16/2009] [Accepted: 10/20/2009] [Indexed: 11/25/2022]
Abstract
Niemann Pick C2 (NPC2) and NPC1 proteins function cooperatively to catalyze cholesterol efflux from lysosomes. NPC1 is expressed in ovarian cells and female NPC1 mice are infertile. This work addressed for the first time the localization and function of murine NPC2 protein in the ovary. Ovarian NPC2 was localized to theca and luteal cells, which use cholesterol as a substrate to produce estradiol and progesterone, respectively. NPC2 deficient (NPC2-/-) females had abnormal estrous cycles and were infertile, with normal folliculogenesis until the antral stage, but a complete absence of corpora lutea and many zonae pellucidae remnants, indicative of anovulation. Serum estradiol was reduced and ovarian cholesterol was accumulated in NPC2-/- mice, suggesting a defect in cholesterol export from intracellular stores. After superovulation, NPC2-/- mice ovulated less eggs than their wild type littermates, showed ovaries with less corpora lutea and numerous unruptured follicles, and lower serum progesterone concentration. Together, these results suggest that NPC2 participates in the traffic of ovarian cholesterol required to provide the substrate for steroid synthesis and support follicle maturation, ovulation and luteinization.
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Affiliation(s)
- D Busso
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Avenida Bernarndo O'Higgins 340, 8331010 Santiago, Chile.
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Busso D, Dominguez C, Perez-Acle T, Moreno RD. Life-giving caspases: revealing new roles during mouse embryo preimplantation development. Int J Dev Biol 2010; 54:857-65. [DOI: 10.1387/ijdb.092921db] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Susini L, Besse S, Duflaut D, Lespagnol A, Beekman C, Fiucci G, Atkinson AR, Busso D, Poussin P, Marine JC, Martinou JC, Cavarelli J, Moras D, Amson R, Telerman A. TCTP protects from apoptotic cell death by antagonizing bax function. Cell Death Differ 2008; 15:1211-20. [PMID: 18274553 DOI: 10.1038/cdd.2008.18] [Citation(s) in RCA: 156] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Translationally controlled tumor protein (TCTP) is a potential target for cancer therapy. It functions as a growth regulating protein implicated in the TSC1-TSC2 -mTOR pathway or a guanine nucleotide dissociation inhibitor for the elongation factors EF1A and EF1Bbeta. Accumulating evidence indicates that TCTP also functions as an antiapoptotic protein, through a hitherto unknown mechanism. In keeping with this, we show here that loss of tctp expression in mice leads to increased spontaneous apoptosis during embryogenesis and causes lethality between E6.5 and E9.5. To gain further mechanistic insights into this apoptotic function, we solved and refined the crystal structure of human TCTP at 2.0 A resolution. We found a structural similarity between the H2-H3 helices of TCTP and the H5-H6 helices of Bax, which have been previously implicated in regulating the mitochondrial membrane permeability during apoptosis. By site-directed mutagenesis we establish the relevance of the H2-H3 helices in TCTP's antiapoptotic function. Finally, we show that TCTP antagonizes apoptosis by inserting into the mitochondrial membrane and inhibiting Bax dimerization. Together, these data therefore further confirm the antiapoptotic role of TCTP in vivo and provide new mechanistic insights into this key function of TCTP.
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Affiliation(s)
- L Susini
- Molecular Engines Laboratories, 20 rue Bouvier, Paris, France
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Cohen DJ, Busso D, Da Ros V, Ellerman DA, Maldera JA, Goldweic N, Cuasnicu PS. Participation of cysteine-rich secretory proteins (CRISP) in mammalian sperm-egg interaction. Int J Dev Biol 2008; 52:737-42. [DOI: 10.1387/ijdb.072538dc] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Cohen DJ, Da Ros VG, Busso D, Ellerman DA, Maldera JA, Goldweic N, Cuasnicú PS. Participation of epididymal cysteine-rich secretory proteins in sperm-egg fusion and their potential use for male fertility regulation. Asian J Androl 2007; 9:528-32. [PMID: 17589791 DOI: 10.1111/j.1745-7262.2007.00283.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Rat protein DE is an androgen-dependent cysteine-rich secretory protein (CRISP) synthesized by proximal epididymal regions. DE, also known as CRISP-1, is localized on the equatorial segment of acrosome-reacted spermatozoa and participates in gamete fusion through binding to egg complementary sites. Immunization of rats with DE inhibits fertility and sperm fusion ability, suggesting that DE represents a good epididymal contraceptive target. Recombinant DE fragments and synthetic peptides revealed that DE binds to the egg via a 12-amino acid region of an evolutionarily conserved motif, Signature 2 (S2). The ability of other CRISP to bind to the rat egg was correlated with their S2 amino acid sequences. Although testicular protein Tpx-1 (CRISP-2) was capable of binding to rodent eggs, human epididymal AEG-related protein (ARP) and helothermine (from lizard saliva) were not. The S2 region presented only two substitutions in Tpx-1 and four in ARP and helothermine, compared with the DE S2, suggesting that this amino acid sequence was relevant for egg interaction. Studies with Tpx-1 and anti-Tpx-1 revealed the participation of this protein in gamete fusion through binding to complementary sites in the egg. In competition studies, DE reduced binding of Tpx-1 dose-dependently, indicating that both CRISP share the egg complementary sites. That anti-DE and anti-Tpx-1 inhibit sperm-egg fusion while recognizing only the corresponding proteins, suggests functional cooperation between these homologous CRISP to ensure fertilization success. These results increase our understanding of the molecular mechanisms of gamete fusion and contribute to the development of new and safer fertility regulating methods.
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Affiliation(s)
- Debora J Cohen
- Institute of Biology and Experimental Medicine, Vuelta de Obligado 2490, Buenos Aires 1428, Argentina
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Busso D, Cohen DJ, Maldera JA, Dematteis A, Cuasnicu PS. A novel function for CRISP1 in rodent fertilization: involvement in sperm-zona pellucida interaction. Biol Reprod 2007; 77:848-54. [PMID: 17671267 DOI: 10.1095/biolreprod.107.061788] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Epididymal protein CRISP1 participates in rat and mouse gamete fusion through its interaction with complementary sites on the egg surface. Based on in vivo observations, in the present study we investigated the possibility that CRISP1 plays an additional role in the sperm-zona pellucida (ZP) interaction that precedes gamete fusion. In vitro fertilization experiments using zona-intact rat and mouse eggs indicated that the presence of either an antibody against rat CRISP1 (anti-CRISP1) or rat native CRISP1 (rCRISP1) during gamete co-incubation produced a significant decrease in the percentage of fertilized eggs. However, differently to that expected for a protein involved in gamete fusion, no accumulation of perivitelline sperm was observed, suggesting that the inhibitions occurred at the sperm-ZP interaction level. Bacterially expressed recombinant CRISP1 (recCRISP1) also significantly inhibited egg fertilization. In this case, however, an increase in the number of perivitelline sperm was observed. Subsequent experiments evaluating the effect of anti-CRISP1 or rCRISP1 on the number of sperm bound per egg indicated that the protein is involved in the initial step of sperm-ZP binding. In agreement with these functional studies, indirect immunofluorescence experiments revealed that although rCRISP1 is capable of binding to both the ZP and the oolema, recCRISP1 only binds to the egg surface. The finding that deglycosylated rCRISP1 behaves as the untreated protein, whereas the heat-denatured rCRISP1 associated only with the oolema, indicates that the protein ZP-binding ability resides in the conformation rather than in the glycosydic portion of the molecule. The interaction between rCRISP1 and the ZP reproduces the sperm-ZP-binding behavior, as judged by the failure of the protein to interact with the ZP of fertilized eggs. Together, these results support the idea that CRISP1 participates not only in sperm-egg fusion but also in the prior stage of sperm-ZP interaction.
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Affiliation(s)
- Dolores Busso
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), 1428 Buenos Aires, Argentina
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41
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Ellerman DA, Busso D, Maldera JA, Cuasnicú PS. Immunocontraceptive properties of recombinant sperm protein DE: implications for the development of novel contraceptives. Fertil Steril 2007; 89:199-205. [PMID: 17482178 DOI: 10.1016/j.fertnstert.2007.02.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2006] [Revised: 02/14/2007] [Accepted: 02/14/2007] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To evaluate the immunocontraceptive properties of recombinant DE, a sperm epididymal protein involved in fertilization, via an experimental study in rats as a critical step toward the development of a human immunocontraceptive. DESIGN In vivo study in rats. SETTING Animal care facility of an academic research center. ANIMAL(S) Seventy-four 90-day-old Wistar male and female rats distributed into three groups. INTERVENTION(S) Animals received five injections (intramuscular and subcutaneous) of recombinant DE (recDE), native DE (nDE), or MBP (maltose-binding protein). At various times, animals were anesthetized and bled. MAIN OUTCOME MEASURE(S) Anti-DE levels and tissue specificity of sera were evaluated by enzyme-linked immunosorbent assay (ELISA) and Western blot, respectively. Fertility was analyzed by natural mating. The testes and epididymides were analyzed by histology. RESULT(S) Recombinant DE raised an immune response with the same kinetics and higher anti-DE levels than that elicited by nDE. Sera against recDE recognized epitopes of DE that were different from those recognized by anti-nDE sera but specifically reacted with DE in epididymis and sperm without cross-reacting with other tissues tested. Male and female recDE-injected animals presented a statistically significant reduction in their fertility with no evidence of pathologic effects. CONCLUSION(S) Recombinant DE is able to both elicit a specific immune response and inhibit male and female fertility, supporting the use of this sperm epididymal protein for the development of an immunocontraceptive approach.
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Affiliation(s)
- Diego A Ellerman
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Vuelta de Obligado 2490, Buenos Aires (1428), Argentina
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42
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Abstract
CRISP2, originally known as Tpx-1, is a cysteine-rich secretory protein specifically expressed in male haploid germ cells. Although likely to be involved in gamete interaction, evidence for a functional role of CRISP2 in fertilization still remains poor. In the present study, we used a mouse model to examine the subcellular localization of CRISP2 in sperm and its involvement in the different stages of fertilization. Results from indirect immunofluorescence and protein extraction experiments indicated that mouse CRISP2 is an intraacrosomal component that remains associated with sperm after capacitation and the acrosome reaction (AR). In vitro fertilization assays using zona pellucida-intact mouse eggs showed that an antibody against the protein significantly decreased the percentage of penetrated eggs, with a coincident accumulation of perivitelline sperm. The failure to inhibit zona pellucida penetration excludes a detrimental effect of the antibody on sperm motility or the AR, supporting a specific participation of CRISP2 at the sperm-egg fusion step. In agreement with this evidence, recombinant mouse CRISP2 (recCRISP2) specifically bound to the fusogenic area of mouse eggs, as previously reported for rat CRISP1, an epididymal protein involved in gamete fusion. In vitro competition investigations showed that incubation of mouse zona-free eggs with a fixed concentration of recCRISP2 and increasing amounts of rat CRISP1 reduced the binding of recCRISP2 to the egg, suggesting that the proteins interact with common complementary sites on the egg surface. Our findings indicate that testicular CRISP2, as observed for epididymal CRISP1, is involved in sperm-egg fusion through its binding to complementary sites on the egg surface, supporting the idea of functional cooperation between homologous molecules to ensure the success of fertilization.
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Affiliation(s)
- Dolores Busso
- Instituto de Biología y Medicina Experimental, 1428 Buenos Aires, Argentina
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Da Ros V, Busso D, Cohen DJ, Maldera J, Goldweic N, Cuasnicu PS. Molecular mechanisms involved in gamete interaction: evidence for the participation of cysteine-rich secretory proteins (CRISP) in sperm-egg fusion. Soc Reprod Fertil Suppl 2007; 65:353-6. [PMID: 17644975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Epididymal protein DE and testicular protein Tpx-1 are two cysteine-rich secretory proteins also known as CRISP-1 and CRISP-2, respectively. DE/ CRISP-1 is localised on the equatorial segment of acrosome-reacted sperm and participates in rat gamete fusion through its binding to egg-complementary sites. Recent results using bacterially-expressed recombinant fragments of DE as well as synthetic peptides revealed that the ability of DE to bind to the egg surface and inhibit gamete fusion resides in a region of 12 amino acids corresponding to an evolutionary conserved motif of the CRISP family (Signature 2). Given the high degree of homology between DE/CRISP-1 and Tpx-1/CRISP-2, we also explored the potential participation of the testicular intra-acrosomal protein in gamete fusion. Results showing the ability of recombinant Tpx-1 to bind to the surface of rat eggs (evaluated by indirect immunofluorescence) and to significantly inhibit zona-free egg penetration, support the participation of this protein in gamete fusion through its interaction with egg-binding sites. Interestingly, rat Tpx-1 exhibits only two substitutions in Signature 2 when compared to this region in DE. Together, these results provide evidence for the involvement of both epididymal DE/CRISP-1 and testicular Tpx-1/CRISP-2 in gamete fusion suggesting the existence of a functional cooperation between homologue molecules as a mechanism to ensure the success of fertilisation.
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Affiliation(s)
- V Da Ros
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Vuelta de Obligado 2490, (1428) Buenos Aires, Argentina
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Aricescu AR, Assenberg R, Bill RM, Busso D, Chang VT, Davis SJ, Dubrovsky A, Gustafsson L, Hedfalk K, Heinemann U, Jones IM, Ksiazek D, Lang C, Maskos K, Messerschmidt A, Macieira S, Peleg Y, Perrakis A, Poterszman A, Schneider G, Sixma TK, Sussman JL, Sutton G, Tarboureich N, Zeev-Ben-Mordehai T, Jones EY. Eukaryotic expression: developments for structural proteomics. Acta Crystallogr D Biol Crystallogr 2006; 62:1114-24. [PMID: 17001089 PMCID: PMC7161643 DOI: 10.1107/s0907444906029805] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/24/2006] [Accepted: 07/31/2006] [Indexed: 12/02/2022]
Abstract
The production of sufficient quantities of protein is an essential prelude to a structure determination, but for many viral and human proteins this cannot be achieved using prokaryotic expression systems. Groups in the Structural Proteomics In Europe (SPINE) consortium have developed and implemented high‐throughput (HTP) methodologies for cloning, expression screening and protein production in eukaryotic systems. Studies focused on three systems: yeast (Pichia pastoris and Saccharomyces cerevisiae), baculovirus‐infected insect cells and transient expression in mammalian cells. Suitable vectors for HTP cloning are described and results from their use in expression screening and protein‐production pipelines are reported. Strategies for co‐expression, selenomethionine labelling (in all three eukaryotic systems) and control of glycosylation (for secreted proteins in mammalian cells) are assessed.
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Affiliation(s)
- A R Aricescu
- Division of Structural Biology and Oxford Protein Production Facility, Wellcome Trust Centre for Human Genetics, Oxford, England
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45
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Alzari PM, Berglund H, Berrow NS, Blagova E, Busso D, Cambillau C, Campanacci V, Christodoulou E, Eiler S, Fogg MJ, Folkers G, Geerlof A, Hart D, Haouz A, Herman MD, Macieira S, Nordlund P, Perrakis A, Quevillon-Cheruel S, Tarandeau F, van Tilbeurgh H, Unger T, Luna-Vargas MPA, Velarde M, Willmanns M, Owens RJ. Implementation of semi-automated cloning and prokaryotic expression screening: the impact of SPINE. Acta Crystallogr D Biol Crystallogr 2006; 62:1103-13. [PMID: 17001088 DOI: 10.1107/s0907444906029775] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2005] [Accepted: 07/31/2006] [Indexed: 11/10/2022]
Abstract
The implementation of high-throughput (HTP) cloning and expression screening in Escherichia coli by 14 laboratories in the Structural Proteomics In Europe (SPINE) consortium is described. Cloning efficiencies of greater than 80% have been achieved for the three non-ligation-based cloning techniques used, namely Gateway, ligation-indendent cloning of PCR products (LIC-PCR) and In-Fusion, with LIC-PCR emerging as the most cost-effective. On average, two constructs have been made for each of the approximately 1700 protein targets selected by SPINE for protein production. Overall, HTP expression screening in E. coli has yielded 32% soluble constructs, with at least one for 70% of the targets. In addition to the implementation of HTP cloning and expression screening, the development of two novel technologies is described, namely library-based screening for soluble constructs and parallel small-scale high-density fermentation.
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Affiliation(s)
- Pedro M Alzari
- Unité de Biochimie Structurale, Institut Pasteur, 25-28 Rue du Dr Roux, Paris CEDEX 15, France
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Ellerman DA, Cohen DJ, Da Ros VG, Morgenfeld MM, Busso D, Cuasnicú PS. Sperm protein "DE" mediates gamete fusion through an evolutionarily conserved site of the CRISP family. Dev Biol 2006; 297:228-37. [PMID: 16872593 DOI: 10.1016/j.ydbio.2006.05.013] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2006] [Revised: 05/08/2006] [Accepted: 05/11/2006] [Indexed: 10/24/2022]
Abstract
The first member of the cysteine-rich secretory protein (CRISP) family was described by our laboratory in the rat epididymis, and it is known as DE or CRISP-1. Since then, numerous CRISPs exhibiting a high amino acid sequence similarity have been identified in animals, plants and fungi, although their functions remain largely unknown. CRISP-1 proteins are candidates to mediate gamete fusion in the rat, mouse and human through their binding to complementary sites on the egg surface. To elucidate the molecular mechanisms underlying CRISP-1 function, in the present work, deletion mutants of protein DE were generated and examined for their ability to bind to the rat egg and interfere with gamete fusion. Results revealed that the egg-binding ability of DE resides within a 45-amino acid N-terminal region containing the two motifs of the CRISP family named Signature 1 and Signature 2. Subsequent assays using synthetic peptides and other CRISPs support that the egg-binding site of DE falls in the 12-amino-acid region corresponding to Signature 2. The interesting finding that the binding site of DE resides in an evolutionarily conserved region of the molecule provides novel information on the molecular mechanisms underlying CRISP-1 function in gamete fusion with important implications on the structure-function relationship of other members of the widely distributed CRISP family.
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Affiliation(s)
- Diego A Ellerman
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), V. de Obligado 2490, (1428) Buenos Aires, Argentina
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Busso D, Cohen DJ, Hayashi M, Kasahara M, Cuasnicú PS. Human testicular protein TPX1/CRISP-2: localization in spermatozoa, fate after capacitation and relevance for gamete interaction. ACTA ACUST UNITED AC 2005; 11:299-305. [PMID: 15734896 DOI: 10.1093/molehr/gah156] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Testicular protein Tpx-1, also known as CRISP-2, is a cysteine-rich secretory protein specifically expressed in the male reproductive tract. Since the information available on the human protein is limited to the identification and expression of its gene, in this work we have studied the presence and localization of human Tpx-1 (TPX1) in sperm, its fate after capacitation and acrosome reaction (AR), and its possible involvement in gamete interaction. Indirect immunofluorescence studies revealed the absence of significant staining in live or fixed non-permeabilized sperm, in contrast to a clear labelling in the acrosomal region of permeabilized sperm. These results, together with complementary evidence from protein extraction procedures strongly support that TPX1 would be mainly an intra-acrosomal protein in fresh sperm. After in vitro capacitation and ionophore-induced AR, TPX1 remained associated with the equatorial segment of the acrosome. The lack of differences in the electrophoretic mobility of TPX1 before and after capacitation and AR indicates that the protein would not undergo proteolytical modifications during these processes. The possible involvement of TPX1 in gamete interaction was evaluated by the hamster oocyte penetration test. The presence of anti-TPX1 during gamete co-incubation produced a significant and dose-dependent inhibition in the percentage of penetrated zona-free hamster oocytes without affecting sperm motility, the AR or sperm binding to the oolema. Together, these results indicate that human TPX1 would be a component of the sperm acrosome that remains associated with sperm after capacitation and AR, and is relevant for sperm-oocyte interaction.
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Affiliation(s)
- D Busso
- Instituto de Biología y Medicina Experimental (IBYME), Buenos Aires (1428), Argentina
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48
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Da Ros VG, Munuce MJ, Cohen DJ, Marín-Briggiler CI, Busso D, Visconti PE, Cuasnicú PS. Bicarbonate Is Required for Migration of Sperm Epididymal Protein DE (CRISP-1) to the Equatorial Segment and Expression of Rat Sperm Fusion Ability1. Biol Reprod 2004; 70:1325-32. [PMID: 14711787 DOI: 10.1095/biolreprod.103.022822] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Numerous studies have demonstrated that sperm capacitation is a bicarbonate-dependent process. In the rat, capacitation has not been studied as much as in other species, mainly because of the difficulties in carrying out functional assays with this animal model. In the present study, we have examined the influence of bicarbonate in the overall rat sperm capacitation process by analyzing involvement of the anion in 1) protein tyrosine phosphorylation, 2) migration of epididymal protein DE (also known as CRISP-1) from the dorsal region to the equatorial segment of the sperm head that occurs during capacitation, and 3) ability of sperm to fuse with the egg. Incubation of sperm under capacitating conditions produced a time-dependent increase in protein tyrosine phosphorylation. This phosphorylation did not occur in the absence of HCO3- and rapidly increased by either exposure of sperm to HCO3- or replacement of the anion by a cAMP analog (dibutyryl-cAMP) and a phosphodiesterase inhibitor (pentoxifylline). The absence of HCO3- also produced a significant decrease in the percentage of cells showing migration of DE to the equatorial segment. This parameter was completely restored by addition of the anion, but dibutyryl-cAMP and pentoxifylline were not sufficient to overcome the decrease in DE migration. Sperm capacitated in the absence of HCO3- were unable to penetrate zona-free eggs independent of the presence of the anion during gamete coincubation. Exposure of these sperm to bicarbonate, or replacement of the anion by dibutyryl-cAMP and pentoxifylline, only partially restored the sperm fusion ability. Altogether, these results indicate that, in addition to its influence on protein tyrosine phosphorylation, bicarbonate is required to support other rat sperm capacitation- associated events, such as migration of DE to the equatorial segment, and expression of the ability of sperm to fuse with the egg.
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Affiliation(s)
- Vanina G Da Ros
- Instituto de Biología y Medicina Experimental, Buenos Aires 1428, Argentina.
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49
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Busso D, Cohen DJ, Da Ros V, Fissore R, Cuasnicú PS. Studies on the participation of epididymal sperm protein DE/CRISP-1 in egg activation. Cell Mol Biol (Noisy-le-grand) 2003; 49:407-12. [PMID: 12887093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
Protein DE (32 kDa) associates with sperm during epididymal maturation and participates in sperm-egg fusion through its binding to complementary sites on the egg surface. In the present work we investigated the participation of DE in two mechanisms probably involved in egg activation: the ability of DE to trigger activation by its interaction with the binding sites on the egg surface (receptor model) and its ability to regulate intracellular calcium channels (sperm factor model). The incubation of eggs with DE did not promote activation parameters such as calcium oscillations or meiosis resumption. Secondly, microinjection of DE into eggs was ineffective in either eliciting calcium release or modifying oscillations induced by an activating sperm extract. Together, these results argue against the participation of DE in egg activation, restricting the activity of this protein and its egg binding sites to the sperm-egg fusion process.
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Affiliation(s)
- D Busso
- Instituto de Biología y Medicina Experimental, Vuelta de Obligado 2490, 1428 Buenos Aires, Argentina.
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50
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Ellerman DA, Da Ros VG, Cohen DJ, Busso D, Morgenfeld MM, Cuasnicú PS. Expression and Structure-Function Analysis of DE, a Sperm Cysteine-Rich Secretory Protein That Mediates Gamete Fusion1. Biol Reprod 2002; 67:1225-31. [PMID: 12297540 DOI: 10.1095/biolreprod67.4.1225] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Rat sperm epididymal glycoprotein DE belongs to the cysteine-rich secretory protein (CRISP) family and participates in sperm-egg fusion through its binding to complementary sites on the egg surface. To investigate the molecular mechanisms underlying the role of DE in gamete fusion, in the present work we expressed DE in a prokaryotic system, and examined the relevance of carbohydrates and disulfide bonds for the biological activity of the protein. Immunofluorescence and sperm-egg fusion assays carried out in the presence of recombinant DE (recDE) revealed that this protein exhibits the ability to bind to the DE-egg binding sites and to inhibit gamete fusion, as does native DE (nDE). Comparison of the proteins indicated, however, that the inhibitory ability of recDE was significantly lower than that of nDE. This difference would not be due to the lack of carbohydrates in the bacterially expressed protein because enzymatically deglycosylated nDE was as able as the untreated protein to inhibit gamete fusion. To examine whether disulfide bridges are involved in DE activity, the presence of sulfhydryls in nDE and recDE was evaluated by the biotin-maleimide technique. Results indicated that, unlike nDE, in which all cysteines are involved in disulfide bonds, recDE contains free thiol groups. Subsequent experiments showed that reduction of nDE with dithiothreitol significantly decreased the ability of the protein to inhibit gamete fusion. Together, these results indicate that whereas carbohydrates do not have a role in DE-mediated gamete fusion, disulfide bridges are required for full biological activity of the protein. To our knowledge, this is the first study reporting the relevance of structural components for the function of a CRISP member.
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Affiliation(s)
- Diego A Ellerman
- Instituto de Biología y Medicina Experimental, 1428 Buenos Aires, Argentina
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