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Bezinelli LM, Corrêa L, Beyerstedt S, Rangel ÉB, Benitez C, Hamerschlak N, Pinho JRR, Heller D, Eduardo FDP. Antimicrobial oral lavage reduces the SARS-CoV-2 load in intubated patients: randomized clinical trial. J Oral Microbiol 2023; 15:2152179. [PMID: 37152554 PMCID: PMC10161956 DOI: 10.1080/20002297.2022.2152179] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background The oral cavity can be a reservoir for SARS-CoV-2 and may play a crucial role in the viral transmission in the hospital environment. Objective To investigate whether an oral hygiene protocol with chlorhexidine (CHX) used alone and in combination with hydrogen peroxide (HP) in the intensive care unit was effective in reducing the SARS-CoV-2 viral load in the oral cavity. Methods SARS-CoV-2 viral load was measured on oral fluid samples collected from patients undergoing orotracheal intubation. The study sample was randomly in: CHX group (n = 19) - oral rinse using only 0.12% CHX solution; HP+CHX group (n = 24) - oral rinse with 1.5% HP and 0.12% CHX. The samples were collected before the interventions (T0), immediately (T1), 30 minutes (T2) and 60 minutes (T3) after the procedure. Results A significant viral load reduction was observed at T1 (mean ± SD:-0.57 ± 0.19 log10;-73.2%;p = 0.022) in the HP+CHX group. No statistically significant differences between any time points were observed in the CHX group. Conclusion The HP+CHX oral rinses significantly reduced the SARS-CoV-2 viral load in the oral fluid immediately after the procedure. The CHX oral rinse alone did not result in any significant viral load reductions.
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Affiliation(s)
| | - Luciana Corrêa
- School of Dentistry, University of São Paulo, São Paulo, Brazil
| | | | - Érika Bevilaqua Rangel
- Hospital Israelita Albert Einstein, São Paulo, Brazil
- Nephorology Division, Federal University of Sao Paulo, São Paulo, Brazil
| | - Carlos Benitez
- Latin American Oral Health Association, São Paulo, Brazil
| | | | | | - Debora Heller
- Hospital Israelita Albert Einstein, São Paulo, Brazil
- Postgraduate Program in Dentistry, Universidade Cruzeiro do Sul, São Paulo, Brazil
- Department of Periodontology, School of Dentistry, The University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
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Intagliata NM, Rahimi RS, Higuera-de-la-Tijera F, Simonetto DA, Farias AQ, Mazo DF, Boike JR, Stine JG, Serper M, Pereira G, Mattos AZ, Marciano S, Davis JPE, Benitez C, Chadha R, Méndez-Sánchez N, deLemos AS, Mohanty A, Dirchwolf M, Fortune BE, Northup PG, Patrie JT, Caldwell SH. Procedural-Related Bleeding in Hospitalized Patients With Liver Disease (PROC-BLeeD): An International, Prospective, Multicenter Observational Study. Gastroenterology 2023; 165:717-732. [PMID: 37271290 DOI: 10.1053/j.gastro.2023.05.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 05/04/2023] [Accepted: 05/11/2023] [Indexed: 06/06/2023]
Abstract
BACKGROUND & AIMS Hospitalized patients with cirrhosis frequently undergo multiple procedures. The risk of procedural-related bleeding remains unclear, and management is not standardized. We conducted an international, prospective, multicenter study of hospitalized patients with cirrhosis undergoing nonsurgical procedures to establish the incidence of procedural-related bleeding and to identify bleeding risk factors. METHODS Hospitalized patients were prospectively enrolled and monitored until surgery, transplantation, death, or 28 days from admission. The study enrolled 1187 patients undergoing 3006 nonsurgical procedures from 20 centers. RESULTS A total of 93 procedural-related bleeding events were identified. Bleeding was reported in 6.9% of patient admissions and in 3.0% of the procedures. Major bleeding was reported in 2.3% of patient admissions and in 0.9% of the procedures. Patients with bleeding were more likely to have nonalcoholic steatohepatitis (43.9% vs 30%) and higher body mass index (BMI; 31.2 vs 29.5). Patients with bleeding had a higher Model for End-Stage Liver Disease score at admission (24.5 vs 18.5). A multivariable analysis controlling for center variation found that high-risk procedures (odds ratio [OR], 4.64; 95% confidence interval [CI], 2.44-8.84), Model for End-Stage Liver Disease score (OR, 2.37; 95% CI, 1.46-3.86), and higher BMI (OR, 1.40; 95% CI, 1.10-1.80) independently predicted bleeding. Preprocedure international normalized ratio, platelet level, and antithrombotic use were not predictive of bleeding. Bleeding prophylaxis was used more routinely in patients with bleeding (19.4% vs 7.4%). Patients with bleeding had a significantly higher 28-day risk of death (hazard ratio, 6.91; 95% CI, 4.22-11.31). CONCLUSIONS Procedural-related bleeding occurs rarely in hospitalized patients with cirrhosis. Patients with elevated BMI and decompensated liver disease who undergo high-risk procedures may be at risk to bleed. Bleeding is not associated with conventional hemostasis tests, preprocedure prophylaxis, or recent antithrombotic therapy.
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Affiliation(s)
| | | | | | | | | | - Daniel F Mazo
- School of Medical Sciences of University of Campinas (UNICAMP), São Paulo, Brazil
| | - Justin R Boike
- Northwestern University Feinburg School of Medicine, Chicago, Illinois
| | - Jonathan G Stine
- Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania
| | - Marina Serper
- University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Gustavo Pereira
- Bonsucesso Federal Hospital (Ministry of Health), Rio de Janeiro, Brazil, and Estácio de Sá School of Medicine-Instituto de Educação Médica, Rio de Janeiro, Brazil
| | - Angelo Z Mattos
- Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | | | | | - Carlos Benitez
- Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Nahum Méndez-Sánchez
- Medica Sur Clinic & Foundation and Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | - Andrew S deLemos
- Wake Forest University School of Medicine, Atrium Health, Charlotte, North Carolina
| | - Arpan Mohanty
- Boston University School of Medicine and Boston Medical Center, Boston, Massachusetts
| | | | - Brett E Fortune
- Montefiore Einstein Center for Transplantation, New York, New York
| | | | - James T Patrie
- University of Virginia School of Medicine, Charlottesville, Virginia
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3
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Farias AQ, Curto Vilalta A, Momoyo Zitelli P, Pereira G, Goncalves LL, Torre A, Diaz JM, Gadano AC, Mattos AZ, Mendes LSC, Alvares-da-Silva MR, Bittencourt PL, Benitez C, Couto CA, Mendizabal M, Toledo CL, Mazo DFC, Castillo Barradas M, Uson Raposo EM, Padilla-Machaca PM, Zarela Lozano Miranda A, Malé-Velázquez R, Castro Lyra A, Dávalos-Moscol MB, Pérez Hernández JL, Ximenes RO, Faria Silva G, Beltrán-Galvis OA, González Huezo MS, Bessone F, Rocha TDS, Fassio E, Terra C, Marín JI, Sierra Casas P, de la Peña-Ramirez C, Aguilar Parera F, Fernandes F, da Penha Zago-Gomes M, Méndez-Guerrero O, Marciano S, Mattos AA, Oliveira JC, Guerreiro GTS, Codes L, Arrese M, Nardelli MJ, Silva MO, Palma-Fernandez R, Alcantara C, Sánchez Garrido C, Trebicka J, Gustot T, Fernández J, Clària J, Jalan R, Angeli P, Arroyo V, Moreau R, Carrilho FJ. Genetic Ancestry, Race, and Severity of Acutely Decompensated Cirrhosis in Latin America. Gastroenterology 2023; 165:696-716. [PMID: 37263305 DOI: 10.1053/j.gastro.2023.05.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 04/28/2023] [Accepted: 05/05/2023] [Indexed: 06/03/2023]
Abstract
BACKGROUND & AIMS Genetic ancestry or racial differences in health outcomes exist in diseases associated with systemic inflammation (eg, COVID-19). This study aimed to investigate the association of genetic ancestry and race with acute-on-chronic liver failure (ACLF), which is characterized by acute systemic inflammation, multi-organ failure, and high risk of short-term death. METHODS This prospective cohort study analyzed a comprehensive set of data, including genetic ancestry and race among several others, in 1274 patients with acutely decompensated cirrhosis who were nonelectively admitted to 44 hospitals from 7 Latin American countries. RESULTS Three hundred ninety-five patients (31.0%) had ACLF of any grade at enrollment. Patients with ACLF had a higher median percentage of Native American genetic ancestry and lower median percentage of European ancestry than patients without ACLF (22.6% vs 12.9% and 53.4% vs 59.6%, respectively). The median percentage of African genetic ancestry was low among patients with ACLF and among those without ACLF. In terms of race, a higher percentage of patients with ACLF than patients without ACLF were Native American and a lower percentage of patients with ACLF than patients without ACLF were European American or African American. In multivariable analyses that adjusted for differences in sociodemographic and clinical characteristics, the odds ratio for ACLF at enrollment was 1.08 (95% CI, 1.03-1.13) with Native American genetic ancestry and 2.57 (95% CI, 1.84-3.58) for Native American race vs European American race CONCLUSIONS: In a large cohort of Latin American patients with acutely decompensated cirrhosis, increasing percentages of Native American ancestry and Native American race were factors independently associated with ACLF at enrollment.
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Affiliation(s)
- Alberto Queiroz Farias
- The Department of Gastroenterology, Hospital das Clínicas, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Anna Curto Vilalta
- European Foundation for the Study of Chronic Liver Failure, Barcelona, Spain
| | - Patricia Momoyo Zitelli
- The Department of Gastroenterology, Hospital das Clínicas, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Gustavo Pereira
- Gastroenterology and Hepatology Unit, Bonsucesso Federal Hospital, Ministry of Health, Rio de Janeiro, Brazil; Estácio de Sá University, School of Medicine, Rio de Janeiro, Brazil
| | - Luciana L Goncalves
- Gastroenterology and Hepatology Unit, Hospital Universitário Cassiano Antônio Moraes, Universidade Federal do Espírito Santo, Vitória, Brazil
| | - Aldo Torre
- Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán," Mexico City, Mexico
| | - Juan Manuel Diaz
- European Foundation for the Study of Chronic Liver Failure, Barcelona, Spain; Liver Unit and Department of Research, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Adrian C Gadano
- Liver Unit and Department of Research, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Angelo Z Mattos
- Federal University of Health Sciences of Porto Alegre, and Gastroenterology and Hepatology Unit, Irmandade Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Brazil
| | | | - Mario R Alvares-da-Silva
- Gastrointestinal and Liver Unit, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Carlos Benitez
- Departamento de Gastroenterología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Claudia Alves Couto
- Instituto Alfa de Gastroenterologia, Hospital das Clínicas da Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Manuel Mendizabal
- Unidad de Hígado y Trasplante Hepático, Hospital Universitario Austral, Pilar, Buenos Aires, Argentina
| | - Claudio L Toledo
- Universidad Austral de Chile, Hospital Valdivia, Valdivia, Chile
| | - Daniel F C Mazo
- Division of Gastroenterology, University of Campinas, Campinas, Brazil
| | - Mauricio Castillo Barradas
- Servicio de Gastroenterología y Hepatología, Hospital de Especialidades Centro Médico Nacional La Raza Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Eva M Uson Raposo
- European Foundation for the Study of Chronic Liver Failure, Barcelona, Spain
| | | | | | | | - André Castro Lyra
- Hospital Universtário Professor Edgard Santos, Salvador, Brazil; Hospital São Rafael, Salvador, Brazil
| | | | - José L Pérez Hernández
- Clínica de hígado, Hospital General de México "Dr. Eduardo Liceaga," Mexico City, Mexico
| | - Rafael O Ximenes
- Serviço de Gastroenterologia e Hepatologia, Hospital das Clínicas da Universidade Federal de Goiás, Goiânia, Brazil
| | | | - Oscar A Beltrán-Galvis
- Grupo Gastro-Hepatología y Trasplante Fundación Cardioinfantil LaCardio, Medellín, Colombia
| | - María S González Huezo
- Departamento de Gastroenterología, Centro Médico Instituto de Seguridad Social del Estado de México y Municipios, Metepec, Mexico
| | - Fernando Bessone
- Hospital Provincial del Centenario, Universidad Nacional de Rosario, Rosario, Argentina
| | | | - Eduardo Fassio
- Sección Hígado, Vías Biliares y Páncreas del Servicio de Gastroenterología, Hospital Nacional Profesor Alejandro, Buenos Aires, Argentina
| | - Carlos Terra
- Serviço de Gastroenterologia, Unidade de Hepatologia, Hospital Universitario Pedro Ernesto, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Juan I Marín
- Bogotá and Hospital Pablo Tobón Uribe, Medellín, Colombia
| | | | | | | | - Flavia Fernandes
- Gastroenterology and Hepatology Unit, Bonsucesso Federal Hospital, Ministry of Health, Rio de Janeiro, Brazil
| | - Maria da Penha Zago-Gomes
- Gastroenterology and Hepatology Unit, Hospital Universitário Cassiano Antônio Moraes, Universidade Federal do Espírito Santo, Vitória, Brazil
| | - Osvely Méndez-Guerrero
- Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán," Mexico City, Mexico
| | - Sebastián Marciano
- Liver Unit and Department of Research, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Angelo A Mattos
- Federal University of Health Sciences of Porto Alegre, and Gastroenterology and Hepatology Unit, Irmandade Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Brazil
| | | | - Gabriel T S Guerreiro
- Gastrointestinal and Liver Unit, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Liana Codes
- Hospital Português da Bahia, Salvador, Brazil
| | - Marco Arrese
- Departamento de Gastroenterología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Centro de Envejecimiento y Regeneracion, Departamento de Biologia Celular y Molecular, Facultad de Ciencias Biologicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Mateus J Nardelli
- Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Marcelo O Silva
- Unidad de Hígado y Trasplante Hepático, Hospital Universitario Austral, Pilar, Buenos Aires, Argentina
| | | | - Camila Alcantara
- Gastroenterology and Hepatology Unit, Bonsucesso Federal Hospital, Ministry of Health, Rio de Janeiro, Brazil
| | | | - Jonel Trebicka
- Medizinische Klinik B (Gastroenterologie, Hepatologie, Endokrinologie, Klinische Infektiologie), Münster, Germany
| | - Thierry Gustot
- European Foundation for the Study of Chronic Liver Failure, Barcelona, Spain; Department of Gastroenterology and Hepato-Pancreatology, Cliniques Universitaires de Bruxelles Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Javier Fernández
- European Foundation for the Study of Chronic Liver Failure, Barcelona, Spain; Hospital Clínic Instituto de Investigaciones Biomédicas August Pi i Sunyer, Universitat de Barcelona, Barcelona, Spain
| | - Joan Clària
- European Foundation for the Study of Chronic Liver Failure, Barcelona, Spain; Hospital Clínic Instituto de Investigaciones Biomédicas August Pi i Sunyer, Universitat de Barcelona, Barcelona, Spain; Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas Barcelona, Spain
| | - Rajiv Jalan
- European Foundation for the Study of Chronic Liver Failure, Barcelona, Spain; Liver Failure Group, Institute for Liver Disease Health, University College London, Royal Free Hospital, London, United Kingdom
| | - Paolo Angeli
- European Foundation for the Study of Chronic Liver Failure, Barcelona, Spain; Unit of Internal Medicine and Hepatology, Department of Medicine, University of Padova, Padova, Italy
| | - Vicente Arroyo
- European Foundation for the Study of Chronic Liver Failure, Barcelona, Spain
| | - Richard Moreau
- European Foundation for the Study of Chronic Liver Failure, Barcelona, Spain; Institut National de la Santé et de la Recherche Médicale, Université Paris Cité, Centre de Recherche sur l'Inflammation, Paris, France; Assistance Publique-Hôpitaux de Paris, Hôpital Beaujon, Service d'Hépatologie, Clichy, France.
| | - Flair J Carrilho
- The Department of Gastroenterology, Hospital das Clínicas, University of São Paulo School of Medicine, São Paulo, Brazil
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Olukoya AO, Stires H, Bahnassy S, Persaud S, Guerra Y, Ranjit S, Ma S, Cruz MI, Benitez C, Rozeboom AM, Ceuleers H, Berry DL, Jacobsen BM, Raj GV, Riggins RB. Riluzole Suppresses Growth and Enhances Response to Endocrine Therapy in ER+ Breast Cancer. J Endocr Soc 2023; 7:bvad117. [PMID: 37766843 PMCID: PMC10521904 DOI: 10.1210/jendso/bvad117] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Indexed: 09/29/2023] Open
Abstract
Background Resistance to endocrine therapy in estrogen receptor-positive (ER+) breast cancer remains a significant clinical problem. Riluzole is FDA-approved for the treatment of amyotrophic lateral sclerosis. A benzothiazole-based glutamate release inhibitor with several context-dependent mechanism(s) of action, riluzole has shown antitumor activity in multiple malignancies, including melanoma, glioblastoma, and breast cancer. We previously reported that the acquisition of tamoxifen resistance in a cellular model of invasive lobular breast cancer is accompanied by the upregulation of GRM mRNA expression and growth inhibition by riluzole. Methods We tested the ability of riluzole to reduce cell growth, alone and in combination with endocrine therapy, in a diverse set of ER+ invasive ductal and lobular breast cancer-derived cell lines, primary breast tumor explant cultures, and the estrogen-independent, ESR1-mutated invasive lobular breast cancer patient-derived xenograft model HCI-013EI. Results Single-agent riluzole suppressed the growth of ER+ invasive ductal and lobular breast cancer cell lines in vitro, inducing a histologic subtype-associated cell cycle arrest (G0-G1 for ductal, G2-M for lobular). Riluzole induced apoptosis and ferroptosis and reduced phosphorylation of multiple prosurvival signaling molecules, including Akt/mTOR, CREB, and Fak/Src family kinases. Riluzole, in combination with either fulvestrant or 4-hydroxytamoxifen, additively suppressed ER+ breast cancer cell growth in vitro. Single-agent riluzole significantly inhibited HCI-013EI patient-derived xenograft growth in vivo, and the combination of riluzole plus fulvestrant significantly reduced proliferation in ex vivo primary breast tumor explant cultures. Conclusion Riluzole may offer therapeutic benefits in diverse ER+ breast cancers, including lobular breast cancer.
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Affiliation(s)
- Ayodeji O Olukoya
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Hillary Stires
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Shaymaa Bahnassy
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Sonali Persaud
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Yanira Guerra
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Suman Ranjit
- Department of Biochemistry, Georgetown University, Washington, DC 20057, USA
| | - Shihong Ma
- Departments of Urology and Pharmacology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75390, USA
| | - M Idalia Cruz
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Carlos Benitez
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Aaron M Rozeboom
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Hannah Ceuleers
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Deborah L Berry
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Britta M Jacobsen
- Department of Pathology, University of Colorado Anschutz Medical Campus, Denver, CO 80045, USA
| | - Ganesh V Raj
- Departments of Urology and Pharmacology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75390, USA
| | - Rebecca B Riggins
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
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Bahnassy S, Benitez C, Cruz MI, Guerra Y, Ma S, Persaud S, Raj G, Riggins R, Stires H, Olukoya A. OR16-5 Riluzole suppresses growth and enhances response to endocrine therapy in ER+ breast cancer. J Endocr Soc 2022. [PMCID: PMC9629283 DOI: 10.1210/jendso/bvac150.1822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Approximately 75% of breast cancers are classified as hormone receptor-positive, most of which are estrogen receptor alpha-positive (ER+), which is the primary driver of growth in these tumors. Consequently, endocrine or anti-estrogen therapy is used for treatment. However, despite the benefits of endocrine therapeutics, treatment-resistant relapse is a significant problem that affects 30-50% of patients who initially respond to endocrine therapy. Therefore, studying resistance to endocrine therapy is critical for breast cancer research.We have shown that invasive lobular breast cancer (ILC) cells resistant to the anti-estrogen tamoxifen increase their expression of metabotropic glutamate receptors (GRMs/mGluRs). GRMs are well-known to play important roles in learning and memory in the brain and protect neurons from excitotoxicity (cell death caused by prolonged exposure to neurotransmitters). It is now appreciated that this pro-survival function of GRMs can be highjacked by cancer cells, including breast cancer. Thus, targeting GRM signaling could prove a valuable therapeutic strategy. We chose to target the GRM signaling pathway with the FDA-approved drug Riluzole currently being used to treat amyotrophic lateral sclerosis.In this study, we test the ability of Riluzole to reduce cell growth, alone and in combination with endocrine therapy, in a diverse set of ER+ invasive ductal and lobular breast cancer-derived cell lines, primary breast tumor explant cultures, and the estrogen-independent, ESR1-mutated, ILC-derived patient-derived xenograft model HCI-013EI. In addition to measuring tumor growth rate and size, primary tumors and organs were collected for immunohistochemistry analysis.Riluzole as a single agent suppressed the growth of ER+ invasive ductal and lobular breast cancer cell lines in vitro, inducing differential histologic subtype-associated cell cycle arrest (G0-G1 for ductal, G2-M for lobular). In tamoxifen-resistant ILC cells, Riluzole induced apoptotic and ferroptotic cell death, and inhibited phosphorylation of focal adhesion kinase. Riluzole combined with either fulvestrant or 4-hydroxytamoxifen additively or synergistically suppressed ER+ breast cancer cell growth in vitro. Using proliferating cell nuclear antigen (PCNA) staining as a proxy for cell proliferation, the combination of Riluzole plus Fulvestrant significantly reduced PCNA in a patient-derived explant model (t-test p = 0.013). The in vivo experiment showed reduced tumor size and growth between the control and combination treatments. However, unlike in the in vitro experiment, there was little difference between the single-agent fulvestrant and the combination groups. The observed difference between the in vitro and in vivo study may be attributed to the bioavailability of Riluzole in mice.In conclusion, our results show that Riluzole enhances response to endocrine therapy in ER+ breast cancer. Presentation: Sunday, June 12, 2022 12:00 p.m. - 12:15 p.m.
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Eduardo FDP, Corrêa L, Mansur F, Benitez C, Hamerschlak N, Pinho JRR, Heller D, Bezinelli LM. Effectiveness of toothpastes on SARS-CoV-2 viral load in saliva. Int Dent J 2022; 72:825-831. [PMID: 35570015 PMCID: PMC8940567 DOI: 10.1016/j.identj.2022.03.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/15/2022] [Accepted: 03/19/2022] [Indexed: 11/05/2022] Open
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Eduardo FDP, Corrêa L, Heller D, Daep CA, Benitez C, Malheiros Z, Stewart B, Ryan M, Machado CM, Hamerschlak N, Rebello Pinho JR, Bezinelli LM. Salivary SARS-CoV-2 load reduction with mouthwash use: A randomized pilot clinical trial. Heliyon 2021; 7:e07346. [PMID: 34189331 PMCID: PMC8222261 DOI: 10.1016/j.heliyon.2021.e07346] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/19/2021] [Accepted: 06/15/2021] [Indexed: 11/21/2022] Open
Abstract
The saliva of patients with COVID-19 has a high SARS-CoV-2 viral load. The risk of spreading the virus is high, and procedures for viral load reduction in the oral cavity are important. Little research to date has been performed on the effect of mouthwashes on the salivary SARS-CoV-2 viral load. This pilot randomized single-center clinical trial investigated whether three types of mouthwash with solutions containing either 0.075% cetylpyridinium chloride plus 0.28% zinc lactate (CPC + Zn), 1.5% hydrogen peroxide (HP), or 0.12% chlorhexidine gluconate (CHX) reduce the SARS-CoV-2 viral load in saliva at different time points. Sixty SARS-CoV-2-positive patients were recruited and randomly partitioned into a placebo (oral rinsing with distilled water) group and other groups according to the type of mouthwash. Saliva samples were collected from the participants before rinsing (T0), immediately after rinsing (T1), 30 min after rinsing (T2), and 60 min after rinsing (T3). The salivary SARS-CoV-2 viral load was measured by qRT-PCR assays. Rinsing with HP and CPC + Zn resulted in better reductions in viral load, with 15.8 ± 0.08- and 20.4 ± 3.7-fold reductions at T1, respectively. Although the CPC + Zn group maintained a 2.6 ± 0.1-fold reduction at T3, this trend was not observed for HP. HP mouthwash resulted in a significant reduction in the SARS-CoV-2 viral load up to 30 min after rinsing (6.5 ± 3.4). The CHX mouthwash significantly reduced the viral load at T1, T2, and T3 (2.1 ± 1.5-, 6.2 ± 3.8-, and 4.2 ± 2.4-fold reductions, respectively). In conclusion, mouthwash with CPC + Zinc and CHX resulted in significant reductions of the SARS-CoV-2 viral load in saliva up to 60 mins after rinsing, while HP mouthwash resulted in a significant reduction up to 30 mins after rinsing. Despite this transitory effect, these results encourage further studies and suggest that these products could be considered as risk-mitigation strategies for patients infected with SARS-CoV-2.
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Affiliation(s)
| | - Luciana Corrêa
- School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Debora Heller
- Hospital Israelita Albert Einstein, São Paulo, Brazil.,Postgraduate Program in Dentistry, Universidade Cruzeiro do Sul, São Paulo, Brazil.,Department of Periodontology, School of Dentistry, The University of Texas Health Science Center at San Antonio, San Antonio, USA
| | | | - Carlos Benitez
- Latin American Oral Health Association, São Paulo, Brazil
| | - Zilson Malheiros
- Colgate-Palmolive Technology Center, Piscataway, NJ, USA.,Latin American Oral Health Association, São Paulo, Brazil
| | - Bernal Stewart
- Colgate-Palmolive Technology Center, Piscataway, NJ, USA.,Latin American Oral Health Association, São Paulo, Brazil
| | - Maria Ryan
- Colgate-Palmolive Technology Center, Piscataway, NJ, USA
| | - Clarisse Martins Machado
- Hospital Israelita Albert Einstein, São Paulo, Brazil.,Virology Laboratory, Institute of Tropical Medicine, University of São Paulo School of Medicine, Brazil
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8
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Coia H, Ma N, Hou Y, Dyba MD, Fu Y, Cruz MI, Benitez C, Graham GT, McCutcheon JN, Zheng YL, Sun B, Kallakury BV, Ma J, Fang HB, Berry DL, Muralidaran V, Chung FL. Prevention of Lipid Peroxidation-derived Cyclic DNA Adduct and Mutation in High-Fat Diet-induced Hepatocarcinogenesis by Theaphenon E. Cancer Prev Res (Phila) 2018; 11:665-676. [PMID: 30131435 PMCID: PMC6171362 DOI: 10.1158/1940-6207.capr-18-0160] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 05/01/2018] [Revised: 06/20/2018] [Accepted: 08/17/2018] [Indexed: 12/21/2022]
Abstract
Obesity is associated with cancer risk and its link with liver cancer is particularly strong. Obesity causes non-alcoholic fatty liver disease (NAFLD) that could progress to hepatocellular carcinoma (HCC). Chronic inflammation likely plays a key role. We carried out a bioassay in the high-fat diet (HFD)-fed C57BL/6J mice to provide insight into the mechanisms of obesity-related HCC by studying γ-OHPdG, a mutagenic DNA adduct derived from lipid peroxidation. In an 80-week bioassay, mice received a low-fat diet (LFD), high-fat diet (HFD), and HFD with 2% Theaphenon E (TE) (HFD+TE). HFD mice developed a 42% incidence of HCC and LFD mice a 16%. Remarkably, TE, a standardized green tea extract formulation, completely blocked HCC in HFD mice with a 0% incidence. γ-OHPdG measured in the hepatic DNA of mice fed HFD and HFD+TE showed its levels increased during the early stages of NAFLD in HFD mice and the increases were significantly suppressed by TE, correlating with the tumor data. Whole-exome sequencing showed an increased mutation load in the liver tumors of HFD mice with G>A and G>T as the predominant mutations, consistent with the report that γ-OHPdG induces G>A and G>T. Furthermore, the mutation loads were significantly reduced in HFD+TE mice, particularly G>T, the most common mutation in human HCC. These results demonstrate in a relevant model of obesity-induced HCC that γ-OHPdG formation during fatty liver disease may be an initiating event for accumulated mutations that leads to HCC and this process can be effectively inhibited by TE. Cancer Prev Res; 11(10); 665-76. ©2018 AACR.
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MESH Headings
- Animals
- Carcinogenesis/drug effects
- Carcinogenesis/genetics
- Carcinoma, Hepatocellular/epidemiology
- Carcinoma, Hepatocellular/etiology
- Carcinoma, Hepatocellular/pathology
- Carcinoma, Hepatocellular/prevention & control
- DNA Adducts/drug effects
- Diet, High-Fat/adverse effects
- Drug Screening Assays, Antitumor
- Incidence
- Lipid Peroxidation/drug effects
- Liver/drug effects
- Liver/pathology
- Liver Neoplasms, Experimental/epidemiology
- Liver Neoplasms, Experimental/etiology
- Liver Neoplasms, Experimental/pathology
- Liver Neoplasms, Experimental/prevention & control
- Male
- Mice
- Mice, Inbred C57BL
- Mutation Rate
- Obesity/complications
- Obesity/etiology
- Obesity/pathology
- Plant Extracts/administration & dosage
- Plant Extracts/chemistry
- Polyphenols/administration & dosage
- Tea/chemistry
- Exome Sequencing
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Affiliation(s)
- Heidi Coia
- Department of Biochemistry & Molecular Biology, Georgetown University Medical Center, Washington DC
| | - Ning Ma
- Department of Biochemistry & Molecular Biology, Georgetown University Medical Center, Washington DC
| | - Yanqi Hou
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC
| | - Marcin D Dyba
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC
| | - Ying Fu
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC
| | - M Idalia Cruz
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC
| | - Carlos Benitez
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC
| | - Garrett T Graham
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC
| | - Justine N McCutcheon
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC
| | - Yun-Ling Zheng
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC
| | - Bing Sun
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC
| | - Bhaskar V Kallakury
- Department of Pathology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington
| | - Junfeng Ma
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC
| | - Hong-Bin Fang
- Department of Biostatistics, Bioinformatics and Biomathematics, Georgetown University, Washington DC
| | - Deborah L Berry
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC
| | - Vinona Muralidaran
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC
| | - Fung-Lung Chung
- Department of Biochemistry & Molecular Biology, Georgetown University Medical Center, Washington DC.
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC
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9
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da Cruz RS, Carney EJ, Clarke J, Cao H, Cruz MI, Benitez C, Jin L, Fu Y, Cheng Z, Wang Y, de Assis S. Paternal malnutrition programs breast cancer risk and tumor metabolism in offspring. Breast Cancer Res 2018; 20:99. [PMID: 30165877 PMCID: PMC6117960 DOI: 10.1186/s13058-018-1034-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [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: 10/23/2017] [Accepted: 07/31/2018] [Indexed: 12/15/2022] Open
Abstract
Background While many studies have shown that maternal factors in pregnancy affect the cancer risk for offspring, few studies have investigated the impact of paternal exposures on their progeny’s risk of this disease. Population studies generally show a U-shaped association between birthweight and breast cancer risk, with both high and low birthweight increasing the risk compared with average birthweight. Here, we investigated whether paternal malnutrition would modulate the birthweight and later breast cancer risk of daughters. Methods Male mice were fed AIN93G-based diets containing either 17.7% (control) or 8.9% (low-protein (LP)) energy from protein from 3 to 10 weeks of age. Males on either group were mated to females raised on a control diet. Female offspring from control and LP fathers were treated with 7,12-dimethylbenz[a]anthracene (DMBA) to initiate mammary carcinogenesis. Mature sperm from fathers and mammary tissue and tumors from female offspring were used for epigenetic and other molecular analyses. Results We found that paternal malnutrition reduces the birthweight of daughters and leads to epigenetic and metabolic reprogramming of their mammary tissue and tumors. Daughters of LP fathers have higher rates of mammary cancer, with tumors arising earlier and growing faster than in controls. The energy sensor, the AMP-activated protein kinase (AMPK) pathway, is suppressed in both mammary glands and tumors of LP daughters, with consequent activation of mammalian target of rapamycin (mTOR) signaling. Furthermore, LP mammary tumors show altered amino-acid metabolism with increased glutamine utilization. These changes are linked to alterations in noncoding RNAs regulating those pathways in mammary glands and tumors. Importantly, we detect alterations in some of the same microRNAs/target genes found in our animal model in breast tumors of women from populations where low birthweight is prevalent. Conclusions Our study suggests that ancestral paternal malnutrition plays a role in programming offspring cancer risk and phenotype by likely providing a metabolic advantage to cancer cells. Electronic supplementary material The online version of this article (10.1186/s13058-018-1034-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Raquel Santana da Cruz
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, 3970 Reservoir Road, NW, The Research Building, Room E410, Washington, DC, 20057, USA
| | - Elissa J Carney
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, 3970 Reservoir Road, NW, The Research Building, Room E410, Washington, DC, 20057, USA
| | - Johan Clarke
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, 3970 Reservoir Road, NW, The Research Building, Room E410, Washington, DC, 20057, USA
| | - Hong Cao
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, 3970 Reservoir Road, NW, The Research Building, Room E410, Washington, DC, 20057, USA
| | - M Idalia Cruz
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, 3970 Reservoir Road, NW, The Research Building, Room E410, Washington, DC, 20057, USA
| | - Carlos Benitez
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, 3970 Reservoir Road, NW, The Research Building, Room E410, Washington, DC, 20057, USA
| | - Lu Jin
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, 3970 Reservoir Road, NW, The Research Building, Room E410, Washington, DC, 20057, USA
| | - Yi Fu
- The Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University Research Center, Arlington, VA, USA
| | - Zuolin Cheng
- The Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University Research Center, Arlington, VA, USA
| | - Yue Wang
- The Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University Research Center, Arlington, VA, USA
| | - Sonia de Assis
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, 3970 Reservoir Road, NW, The Research Building, Room E410, Washington, DC, 20057, USA.
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10
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Vargas JI, Arab JP, Monrroy H, Labbé P, Sarmiento V, Fuster F, Barrera F, Benitez C, Arrese M, Fuster F, Soza A. [Direct antivirals for the treatment of chronic hepatitis C virus infection. Experience in 106 patients]. Rev Med Chil 2018; 145:1235-1242. [PMID: 29488563 DOI: 10.4067/s0034-98872017001001235] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 10/31/2017] [Indexed: 11/17/2022]
Affiliation(s)
- José Ignacio Vargas
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Juan Pablo Arab
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Hugo Monrroy
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pilar Labbé
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Felipe Fuster
- Unidad de Hepatología, Hospital Gustavo Fricke, Viña Del Mar, Chile
| | - Francisco Barrera
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Carlos Benitez
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Marco Arrese
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Francisco Fuster
- Unidad de Hepatología, Hospital Gustavo Fricke, Viña Del Mar, Chile
| | - Alejandro Soza
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
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11
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Nguyen NM, de Oliveira Andrade F, Jin L, Zhang X, Macon M, Cruz MI, Benitez C, Wehrenberg B, Yin C, Wang X, Xuan J, de Assis S, Hilakivi-Clarke L. Maternal intake of high n-6 polyunsaturated fatty acid diet during pregnancy causes transgenerational increase in mammary cancer risk in mice. Breast Cancer Res 2017; 19:77. [PMID: 28673325 PMCID: PMC5494892 DOI: 10.1186/s13058-017-0866-x] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 06/07/2017] [Indexed: 12/29/2022] Open
Abstract
Background Maternal and paternal high-fat (HF) diet intake before and/or during pregnancy increases mammary cancer risk in several preclinical models. We studied if maternal consumption of a HF diet that began at a time when the fetal primordial germ cells travel to the genital ridge and start differentiating into germ cells would result in a transgenerational inheritance of increased mammary cancer risk. Methods Pregnant C57BL/6NTac mouse dams were fed either a control AIN93G or isocaloric HF diet composed of corn oil high in n-6 polyunsaturated fatty acids between gestational days 10 and 20. Offspring in subsequent F1–F3 generations were fed only the control diet. Results Mammary tumor incidence induced by 7,12-dimethylbenz[a]anthracene was significantly higher in F1 (p < 0.016) and F3 generation offspring of HF diet-fed dams (p < 0.040) than in the control offspring. Further, tumor latency was significantly shorter (p < 0.028) and burden higher (p < 0.027) in F1 generation HF offspring, and similar trends were seen in F3 generation HF offspring. RNA sequencing was done on normal mammary glands to identify signaling differences that may predispose to increased breast cancer risk by maternal HF intake. Analysis revealed 1587 and 4423 differentially expressed genes between HF and control offspring in F1 and F3 generations, respectively, of which 48 genes were similarly altered in both generations. Quantitative real-time polymerase chain reaction analysis validated 13 chosen up- and downregulated genes in F3 HF offspring, but only downregulated genes in F1 HF offspring. Ingenuity Pathway Analysis identified upregulation of Notch signaling as a key alteration in HF offspring. Further, knowledge-fused differential dependency network analysis identified ten node genes that in the HF offspring were uniquely connected to genes linked to increased cancer risk (ANKEF1, IGFBP6, SEMA5B), increased resistance to cancer treatments (SLC26A3), poor prognosis (ID4, JAM3, TBX2), and impaired anticancer immunity (EGR3, ZBP1). Conclusions We conclude that maternal HF diet intake during pregnancy induces a transgenerational increase in offspring mammary cancer risk in mice. The mechanisms of inheritance in the F3 generation may be different from the F1 generation because significantly more changes were seen in the transcriptome. Electronic supplementary material The online version of this article (doi:10.1186/s13058-017-0866-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nguyen M Nguyen
- Department of Oncology, Georgetown University, Research Building, Room E407, 3970 Reservoir Road, NW, Washington, DC, 20057, USA
| | - Fabia de Oliveira Andrade
- Department of Oncology, Georgetown University, Research Building, Room E407, 3970 Reservoir Road, NW, Washington, DC, 20057, USA
| | - Lu Jin
- Department of Oncology, Georgetown University, Research Building, Room E407, 3970 Reservoir Road, NW, Washington, DC, 20057, USA
| | - Xiyuan Zhang
- Department of Oncology, Georgetown University, Research Building, Room E407, 3970 Reservoir Road, NW, Washington, DC, 20057, USA
| | - Madisa Macon
- Department of Oncology, Georgetown University, Research Building, Room E407, 3970 Reservoir Road, NW, Washington, DC, 20057, USA
| | - M Idalia Cruz
- Department of Oncology, Georgetown University, Research Building, Room E407, 3970 Reservoir Road, NW, Washington, DC, 20057, USA
| | - Carlos Benitez
- Department of Oncology, Georgetown University, Research Building, Room E407, 3970 Reservoir Road, NW, Washington, DC, 20057, USA
| | - Bryan Wehrenberg
- UTHealth Graduate School of Biomedical Sciences, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Chao Yin
- Department of Oncology, Georgetown University, Research Building, Room E407, 3970 Reservoir Road, NW, Washington, DC, 20057, USA
| | - Xiao Wang
- Department of Electrical and Computer Engineering, Virginia Tech, Arlington, VA, USA
| | - Jianhua Xuan
- Department of Electrical and Computer Engineering, Virginia Tech, Arlington, VA, USA
| | - Sonia de Assis
- Department of Oncology, Georgetown University, Research Building, Room E407, 3970 Reservoir Road, NW, Washington, DC, 20057, USA
| | - Leena Hilakivi-Clarke
- Department of Oncology, Georgetown University, Research Building, Room E407, 3970 Reservoir Road, NW, Washington, DC, 20057, USA.
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12
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Cruz RSD, Clarke J, Baird A, Cao H, Benitez C, Cruz MI, Assis SD. Abstract 2404: Paternal intake of an obesity-inducing diet before conception modulates the risk of pancreatic cancer in offspring in a mouse model. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-2404] [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: 11/16/2022]
Abstract
Abstract
Pancreatic cancer is a mostly untreatable malignancy, with 5-year survival rates of about 5%. Life-style and dietary factors have been associated with pancreatic cancer risk. Particularly, the consumption of high-fat diets and obesity (and underlying metabolic dysfunction) have been linked to increased susceptibility to this cancer. Recent studies have shown that the paternal diet and life-style can have a significant influence on offspring’s health via epigenetic information transmitted in the germ-line. Paternal overweight before conception has been shown to increase offspring’s susceptibility of developing metabolic diseases and some types of cancer. Here, we evaluated the effects of paternal overweight in the susceptibility of pancreatic cancer in offspring using the P48Cre/+ /KrasG120/+ mouse model of pancreatic cancer. LSL-KrasG120/+ and P48Cre/+ male mice were fed either an obesity-inducing (OID) or control (CO) diet for 8 weeks from weaning to sexual maturity. After this period, OID-fed and CO-fed male mice were housed together with 7 week-old female mice, with free access to CO diet, for 3 days. Pregnant dams were kept on the CO diet during pregnancy and after giving birth. Pups were weaned from mothers at 21 days of age, fed a standard chow diet for the extent of the study and weighed weekly. The offspring of CO or OID fathers were used to study body weight, metabolic parameters and pancreatic cancer development. Fathers fed an OID gained significantly more weight (CO 15.7±1.0g; OID 19.7±1.3g, p=0.02) and had higher leptin levels (p=0.04), compare to CO group fathers. Body weight analyses of OID and CO offspring, showed gender-specific effects. While the OID female offspring had higher weight at birth (p=0.005) and at weaning (p=0.02), compare to CO group, no significant differences were observed between the CO and OID male offspring. Those gender-specific differences were also observed in metabolic parameters such GTT with the OID male, but not female, offspring showing impaired glucose tolerance (p=0.0004) compared to CO. While the monitoring period is still ongoing, 8-week old OID offspring present gender-specific differences in susceptibility to pancreatic cancer: Males OID offspring have higher number/area (481±25; 2.6±0.3) of pancreatic intraepithelial neoplasia (PanIn), compared to CO (359±61; 2.0±0.5). On the other hand, female OID offspring have similar levels of PanIn, but have higher incidence of PDACs compare to CO. In conclusion, an ancestral history of overweight through the paternal lineage may be associated with an increased susceptibility to pancreatic cancer development in adulthood. The mechanisms mediating this effect remain to be elucidated.
Citation Format: Raquel Santana Da Cruz, Johan Clarke, Ali Baird, Hong Cao, Carlos Benitez, M. Idalia Cruz, Sonia De Assis. Paternal intake of an obesity-inducing diet before conception modulates the risk of pancreatic cancer in offspring in a mouse model [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 2404. doi:10.1158/1538-7445.AM2017-2404
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Affiliation(s)
| | - Johan Clarke
- Georgetown University Medical Center, Washington, DC
| | - Ali Baird
- Georgetown University Medical Center, Washington, DC
| | - Hong Cao
- Georgetown University Medical Center, Washington, DC
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13
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Solari S, Cancino A, Wolff R, Norero B, Vargas JI, Barrera F, Guerra JF, Martínez J, Jarufe N, Soza A, Arrese M, Benitez C. Sublingual tacrolimus administration provides similar drug exposure to per-oral route employing lower doses in liver transplantation: a pilot study. Aliment Pharmacol Ther 2017; 45:1225-1231. [PMID: 28261844 DOI: 10.1111/apt.14022] [Citation(s) in RCA: 5] [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] [Received: 12/09/2016] [Revised: 01/04/2017] [Accepted: 02/09/2017] [Indexed: 12/31/2022]
Abstract
BACKGROUND Per-oral tacrolimus administration is not always practicable. Sublingual administration is a potential alternative, but its feasibility and effectiveness compared with oral route has not been established. AIM To compare tacrolimus drug exposure after sublingual and oral administration in liver transplant recipients. METHODS Experimental, open-label, non-randomised, cross-over study. Tacrolimus exposure was evaluated in 32 liver transplant recipients receiving oral administration. 12 h tacrolimus area-under-the-curve (AUC0-12 h ) was calculated using tacrolimus blood concentrations at 0-0.5-1-2-4-6-8-12 hrs post-dose. Recipients were switched to sublingual administration, and dose was adjusted to reach similar trough levels, new AUC0-12 h was calculated. Correlation between AUC0-12 h and trough levels was determined for both oral and sublingual phases. RESULTS Similar trough levels were accomplished with oral and sublingual administration (6.68 ± 2 ng/mL vs. 6.62 ± 1.9 ng/mL (P = 0.8)). Although concentration 2 h post dose was higher in oral phase (15.36 ± 7.14 vs. 13.18 ± 5.64, P = 0.015), AUC0-12 h was similar in both phases (116.6 ± 34.6 vs. 111.5 ± 36.93 ng/mL* h, P = 0.19). Daily dose of tacrolimus required in sublingual phase was 37% lower than that used in oral phase (P < 0.0001), suggesting significantly increased bioavailability of tacrolimus when employing sublingual route. Good correlation between AUC0-12 h and trough levels was observed in sublingual phase (r2 = 0.74). Twenty-two recipients were maintained on sublingual administration after the end of study (mean follow-up: 18.7 ± 5.8 months). No difference in liver function tests or rejection rates was found during follow-up period. CONCLUSIONS Sublingual administration of tacrolimus is feasible and provides similar drug exposure compared with oral administration. In our study, at long-term follow-up, sublingual administration was not associated with liver transplant rejection.
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Affiliation(s)
- S Solari
- Clinic Laboratory Department, Facultad De Medicina, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile
| | - A Cancino
- Liver Transplant Unit, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile
| | - R Wolff
- Gastroenterology Department, Facultad De Medicina, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile.,Liver Transplant Unit, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile
| | - B Norero
- Gastroenterology Department, Facultad De Medicina, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile.,Liver Transplant Unit, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile
| | - J I Vargas
- Gastroenterology Department, Facultad De Medicina, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile
| | - F Barrera
- Gastroenterology Department, Facultad De Medicina, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile.,Liver Transplant Unit, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile
| | - J F Guerra
- Liver Transplant Unit, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile.,Department Digestive Surgery, Facultad de Medicina, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile
| | - J Martínez
- Liver Transplant Unit, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile.,Department Digestive Surgery, Facultad de Medicina, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile
| | - N Jarufe
- Liver Transplant Unit, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile.,Department Digestive Surgery, Facultad de Medicina, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile
| | - A Soza
- Gastroenterology Department, Facultad De Medicina, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile.,Liver Transplant Unit, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile
| | - M Arrese
- Gastroenterology Department, Facultad De Medicina, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile.,Liver Transplant Unit, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile
| | - C Benitez
- Gastroenterology Department, Facultad De Medicina, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile.,Liver Transplant Unit, Hospital Clinico, Pontificia Universidad Catolica De Chile, Santiago, Chile
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14
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Gabrielli M, Moisan F, Vidal M, Duarte I, Jiménez M, Izquierdo G, Domínguez P, Méndez J, Soza A, Benitez C, Pérez R, Arrese M, Guerra J, Jarufe N, Martínez J. Steatotic livers. Can we use them in OLTX? Outcome data from a prospective baseline liver biopsy study. Ann Hepatol 2013; 11:891-8. [PMID: 23109453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Steatotic livers have been associated with greater risk of allograft dysfunction in liver transplantation. Our aim was to determinate the prevalence of steatosis in grafts from deceased donors in Chile and to assess the utility of a protocol-bench biopsy as an outcome predictor of steatotic grafts in our transplant program. MATERIAL AND METHODS We prospectively performed protocol-bench graft biopsies from March 2004 to January 2009. Biopsies were analyzed and classified by two independent pathologists. Steatosis severity was graded as normal from absent to < 6%; grade 1: 6-33%; grade 2: > 33-66% and grade 3: > 66%. RESULTS We analyzed 58 liver grafts from deceased donors. Twenty-nine grafts (50%) were steatotic; 9 of them (16%) with grade 3. Donor age (p < 0.001) and BMI over 25 kg/m 2 (p = 0.012) were significantly associated with the presence of steatosis. There were two primary non-functions (PNF); both in a grade 3 steatotic graft. The 3-year overall survival was lower among recipients with macrovesicular steatotic graft (57%) than recipients with microvesicular (85%) or non-steatotic grafts (95%) (p = 0.026). CONCLUSION Macrovesicular steatosis was associated with a poor outcome in this series. A protocol bench-biopsy would be useful to identify these grafts.
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Affiliation(s)
- Mauricio Gabrielli
- Liver Unit, Department of Surgery, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
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15
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de Assis S, Warri A, Benitez C, Helferich W, Hilakivi-Clarke L. Protective effects of prepubertal genistein exposure on mammary tumorigenesis are dependent on BRCA1 expression. Cancer Prev Res (Phila) 2011; 4:1436-48. [PMID: 21680703 DOI: 10.1158/1940-6207.capr-10-0346] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This study investigated whether prepubertal dietary exposure to genistein reduces mammary tumorigenesis by upregulating Brca1 expression in mice. Heterozygous Brca1(+/-) mice and their wild-type (WT) littermates were fed control AIN93G diet or 500 ppm genistein-supplemented AIN93G diet from postnatal day (PND) 15 to PND30 and then switched to AIN93G diet. Prepubertal dietary exposure to genistein reduced 7,12-dimethylbenz(a)anthracene (DMBA)-induced mammary incidence (P = 0.029) and aggressiveness of the tumors (P < 0.001) in the WT mice and upregulated the expression of Brca1 in their mammary glands (P = 0.04). In contrast, prepubertal genistein diet neither significantly reduced mammary tumorigenesis or tumor aggressivity nor increased Brca1 mRNA expression in the Brca1(+/-) mice. These results may be related to the opposing effects of prepubertal genistein diet on the expression of Rankl and CK5/CK18 ratio (marker of luminal epithelial cell differentiation) in the mammary gland and estrogen receptor (ER-α) and progesterone receptor (PgR) protein levels in the mammary tumor: these all were reduced in the WT mice or increased in Brca1(+/-) mice. Both the WT and Brca1(+/-) mice exhibited reduced levels of amphiregulin, CK5, and CK18, delayed ductal elongation and a reduction in terminal end bud number in the normal mammary gland, and reduced HER-2 protein levels in the mammary tumors; however, these effects were not sufficient to significantly reduce mammary tumorigenesis in Brca1(+/-) mice. Our results show that upregulation of Brca1 may be required for prepubertal dietary genistein exposure to reduce later mammary tumorigenesis, perhaps because in the absence of this upregulation, mice do not exhibit genistein-induced downregulation of ER-α, PgR, and Rankl.
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Affiliation(s)
- Sonia de Assis
- Lombardi Comprehensive Cancer Center and Department of Oncology, Georgetown University, Washington, District of Columbia, USA
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16
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Millán O, Benitez C, Guillén D, López A, Rimola A, Sánchez-Fueyo A, Brunet M. Biomarkers of immunoregulatory status in stable liver transplant recipients undergoing weaning of immunosuppressive therapy. Clin Immunol 2010; 137:337-46. [PMID: 20822959 DOI: 10.1016/j.clim.2010.08.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2010] [Revised: 07/12/2010] [Accepted: 08/09/2010] [Indexed: 01/05/2023]
Abstract
Biomarkers that reflect immune response recovery and predict clinical events during withdrawal or minimization of immunosuppressive therapy have not been evaluated. This study aimed to evaluate whether immune response recovers after withdrawal of long-term immunosuppressive treatment in stable liver transplant patients and to determine whether specific biomarkers reflect immune response reactivity and predict rejection. Pharmacokinetic-pharmacodynamic profiles were determined in 24 patients and 80 healthy donors before immunosuppressive treatment reduction began, at 50%, and at complete withdrawal. In patients who rejected, effector-T-cell response mediated by soluble IFN-γ, %CD4(+)IFN-γ and %CD8(+)IL-2/IFN-γ were significantly increased, while TGF-β1 production and the TGF-β1/IFN-γ ratio were significantly decreased. In patients with rejection, soluble IFN-γ and %CD8(+)IL-2 were significantly higher before immunosuppressive treatment was reduced. Further studies are required, but this battery of biomarkers performed in whole blood could be a useful tool to monitor immunosuppressive treatment minimization or withdrawal protocols and identify patients at increased risk of rejection.
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Affiliation(s)
- Olga Millán
- Unidad de Inmunosupresión, Farmacología, Centro de Diagnóstico Biomédico, IDIBAPS, Hospital Clínico, Universidad de Barcelona c/ Villarroel 170, 08036, Barcelona, Spain
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17
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León C, Benitez C, Dupanloup A, Saloukvadze G, Zinder A, de Marsano-Ernoult G, Krummenacher T. [Mental health and psychiatry: role and issues of the Geneva mental health associations' network]. Rev Med Suisse 2009; 5:1832-1836. [PMID: 19839372] [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: 05/28/2023]
Abstract
The psychosocial Geneva-based associations provide ongoing support to people suffering from mental disorders and their families. This network gives psychological care and works towards social inclusion. This approach is an alternative as well as a complement to medical care. The services offered by the associations are varied: mutual self-help, providing a place to live and a space dedicated to specific activities, family support, counselling, therapy, etc. They have two central issues: improving quality of life and promoting the rights of patients. Collaboratively, they are in constant dialogue with the psychiatric institutions in the canton, leading to joint activities and furthering the thinking on patient health and rehabilitation.
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Affiliation(s)
- C León
- PAROLE, Genève. [corrected]
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18
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Ramirez J, Segura J, Benitez C, de la Torre A, Rubio A. An effective subband OSF-based VAD with noise reduction for robust speech recognition. ACTA ACUST UNITED AC 2005. [DOI: 10.1109/tsa.2005.853212] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Abstract
A study on the composting of residues of cotton gin previously crushed or uncrushed is presented in this work. A multifactor analysis of correlation for each one of the treatments revealed that the final results obtained during the composting process of cotton residuals were very different according to whether the residues were crushed or uncrushed. Generally, the highest final values of macronutrients and micronutrients obtained were found when the composting process was carried out with the crushed residuals.
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Affiliation(s)
- M Tejada
- Departamento de Cristalografía, Mineralogía y Química Agrícola, EUITA Universidad de Sevilla, Carretera de Utrera, Spain.
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20
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Abstract
Proteins which are found in integral defatted sunflower flour (27% of protein in dry weight) allow us to produce a protein concentrate by means of extraction of proteins with a basic pH solution, followed by their precipitation with an acid pH solution. Once the suitable conditions for pH and temperature were fixed in order to carry out these processes, a solid proteic concentrate (71% of protein in dry weight) was obtained which was rich in glutamic and aspartic acids, with a liquid supernatant very rich in phosphorus and potassium, which might be used as an agricultural fertilizer.
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Affiliation(s)
- C Ordóñez
- Departamento de Química Agrícola y Edafología, Facultad de Ciencias, Universidad de Córdoba, Spain.
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21
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Benitez C, O'Sullivan D, Tinanoff N. Effect of a preventive approach for the treatment of nursing bottle caries. ASDC J Dent Child 1994; 61:46-9. [PMID: 8182198] [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: 01/29/2023]
Abstract
Seventeen children with nursing bottle caries and their caretakers were studied to assess whether a preventive program would arrest the progression of the caries. Prior to the study the caretakers were asked questions regarding their child's oral hygiene practices and nursing habits, as well as the caretaker's demographic characteristics. All caretakers were given instructions on how to control the use of their child's nursing bottle and how to brush their child's teeth twice daily with 0.4 percent stannous fluoride gel. After the instruction the children and caretakers were placed on 3-month recalls. Compliance was determined through a self-evaluation questionnaire assessing preventive behaviors. In general, the caretakers were unmarried 20- to 30-year-old women subsisting on welfare with one child. The majority of the caretakers were aware of the potential dangers of the child sleeping with milk or sweet liquids in the bottle. The study was discontinued after three month because caries noticeably progressed in all but two of the children, and only two caretakers complied fully with the prevention program.
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Affiliation(s)
- C Benitez
- Department of Pediatric Dentistry and Orthodontics, School of Dental Medicine, University of Connecticut Health Center, Farmington 06030-1610
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22
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Andreu J, Caralps A, Lloveras J, Benitez C, Masramón J, Guerra C. [Determination of HL-A hyplotypes and evolution of renal transplantation]. Actas Urol Esp 1977; 1:343-6. [PMID: 354344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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23
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Rotger F, Gelabert A, Guerra C, Benitez C, López A. [Urographic aspects of the transplanted kidney]. Actas Urol Esp 1977; 1:271-4. [PMID: 354341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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24
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Gonzalez PC, Ballesteros JJ, Figuls J, Benitez C. [Transcervical adenomectomy with prior hemostasis (author's transl)]. Urologe A 1976; 15:113-5. [PMID: 59447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
After giving a brief description of the anatomy of the prostate, with special emphasis on the irrigation of same, the authors discuss 226 cases of adenoma of the prostate operated on transcervically with prior hemostasis, the transfusion consisting of a total of 111 of blood. In 68% of the cases, the urine became clear within 24 h after the operation. The probe was removed within the first 5 days in 70% of the cases. The complications found included: 9 cases of epididymitis (keeping in mind that deferent ducts are never linked), 4 cases of postoperative incontinence (in 3 cases the incontinence was temporary and disappeared within 3 months), and 3 deaths 2 weeks after the operation (1.3%) due to ictus, bronchopneumonia, and pneumonia, respectively. The hospital stay lasted 9 days, on the average. There were no cases of late hemorrhaging, fistula, or vesicle atony.
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