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5 results on '"Varenka Barbero-Becerra"'

1. Prebiotics and Probiotics: Therapeutic Tools for Nonalcoholic Fatty Liver Disease

Author

Alejandra Mijangos-Trejo, Natalia Nuño-Lambarri, Varenka Barbero-Becerra, Misael Uribe-Esquivel, Paulina Vidal-Cevallos, and Norberto Chávez-Tapia

Subjects
probiotics, dysbiosis, NAFLD, gut–liver axis, Biology (General), QH301-705.5, Chemistry, QD1-999
Abstract

Alterations in the gut–liver axis and changes in the gut microbiome are among the risk factors for the pathogenesis of non-alcoholic fatty liver disease (NAFLD). These patients show increased bacterial overgrowth in the small intestine and impaired intestinal permeability. Therefore, therapeutic options such as probiotics or prebiotics have been investigated to modulate intestinal microbiota composition to improve NAFLD. Most in vivo and in vitro probiotic studies have focused on reducing hepatic fat accumulation. The beneficial effects of probiotics on NAFLD have been demonstrated in animal models, and the most widely used microorganisms are those of the Lactobacillus and Bifidobacterium genera. In animal models, probiotics help restore the intestinal microbiota and improve the integrity of the intestinal barrier. This narrative review summarizes published evidence and the likely benefits of probiotics and prebiotics as a therapeutic option for patients with NAFLD.

Published
2023
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2. Current evidence on the use of probiotics in liver diseases

Author

Norberto C. Chávez-Tapia, Leticia González-Rodríguez, MinSeung Jeong, Yanine López-Ramírez, Varenka Barbero-Becerra, Eva Juárez-Hernández, Juan L. Romero-Flores, Marco Arrese, Nahúm Méndez-Sánchez, and Misael Uribe

Subjects
Bacterial translocation, Cirrhosis, Hepatitis, Liver diseases, Microbiota, Probiotics, Nutrition. Foods and food supply, TX341-641
Abstract

The human gastrointestinal tract contains bacterial species that, among other functions, maintain a microbial barrier against potential pathogens and help regulate the immune response in the human body. The composition of gut microbiota and its variations hold an important role in the development of liver diseases. Under pathological conditions, bacterial components are released into the liver–gut axis and cause proinflammatory and autoimmune responses in the liver; these responses can initiate direct damage to liver cells. Probiotics have been shown to have favorable effects when used to treat several liver diseases by reducing the production of bacterial toxins and by modulating autoimmune responses, intestinal permeability, and the inflammatory response. This review discusses current data concerning the role of gut microbiota and its relationship with the immune system and the progression of liver diseases, as well as the use of different strains of bacteria for treatments of such diseases.

Published
2015
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3. Primary prophylaxis with ciprofloxacin in cirrhotic patients with ascites: a randomized, double blind study

Author

Félix Téllez-Ávila, José Sifuentes-Osornio, Varenka Barbero-Becerra, Ada Franco-Guzmán, Roberto Ruiz-Cordero, Roberto Alfaro-Lara, Ángeles Hernández-Ramírez, and Florencia Vargas-Vorácková

Subjects
Liver chronic disease, Prophylaxis, Bacterial infections, Spontaneous bacterial peritonitis, Specialties of internal medicine, RC581-951
Abstract

Introduction and aim. There is scarce information about primary prophylaxis in cirrhotic patients. The aim was to assess the efficacy of ciprofloxacin for primary prophylaxis for bacterial infections in patients with cirrhosis of the liver and ascites.Material and methods. A randomized, double-blind placebo-controlled clinical trial was conduced. Patients were randomized to receive oral ciprofloxacin 500 mg/day or placebo for one month. A basal evaluation and repeated assessments at 4, 6, 12, 18, and 24 weeks afterwards, or whenever a primary endpoint occurred were done. Statistical analysis: probability curves were constructed with the Kaplan-Meier method and compared by the log-rank test.Results. 95 patients were randomized to ciprofloxacin group (n = 49; 51.6%) and placebo group (n = 46; 48.4%). Six-teen (32.6%) patients in the ciprofloxacin group developed bacterial infections and thirteen (28.2%) patients developed bacterial infections in the placebo group (p = NS). The probability to remain free of bacterial infections did not reach statistical significance (p = 0.38). Probability of survival at 24 weeks was 91% in placebo group and 98% in the ciprofloxacin group (p = 0.28). The absolute risk reduction was 5%, the relative risk reduction was 6% and the NNT was 20 patients.Conclusion. Primary prophylaxis with ciprofloxacin for one month in cirrhotic patients with ascites who do not have a currently accepted indication, did not show a preventive effect on the development of bacterial infections at one month follow-up. Moreover in women could increases the odds for UTI. The administration of ciprofloxacin seemed to decrease the risk of mortality.

Published
2014
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4. Efficacy and safety of intramuscular administration of tixagevimab-cilgavimab for early outpatient treatment of COVID-19 (TACKLE): a phase 3, randomised, double-blind, placebo-controlled trial

Author

Hugh Montgomery, F D Richard Hobbs, Francisco Padilla, Douglas Arbetter, Alison Templeton, Seth Seegobin, Kenneth Kim, Jesus Abraham Simón Campos, Rosalinda H Arends, Bryan H Brodek, Dennis Brooks, Pedro Garbes, Julieta Jimenez, Gavin C K W Koh, Kelly W Padilla, Katie Streicher, Rolando M Viani, Vijay Alagappan, Menelas N Pangalos, Mark T Esser, Wakana Abe, Tania Adan De Varona, Daria Adiatullina, Daniel Aguilar Zapata, Kevin Ahlers, Carolina Aimo, Ayoade Akere, Elena Akimova, Jorge Alatorre Alexander, Logan Aldrich, Ismael Ali Garcia, Karim Ali García, Lee Allison, Rosa Alonso Zuñiga, Ivan Aloysius, Javier Altclas, Andres Alvarisqueta, Martti Antila, Camila Anton, Elisabet Árboix Alamo, Samir Arora, Ramón Alejandro Avilés Felix, Natalya Bakhtina, Varenka Barbero-Becerra, Armando Barragan-Reyes, Alejandro Barreira, Mitchell Barrett, Jiri Beran, Nikolett Berki, Viktoria Berki, Richard Betten, Claudia Binelli, Lenka Brunzová, Cecilia Bussolari, Karianna Byargeon, Justyna Bytnar, Carlos Camberos, Pedro Campos Corzo, Grazia Cannon, Valentina Canovi, Simone Carla da Rosa, Ana Caroline Moser, Luis Carrera Rivas, Marcelo Martin Casas, Paulo Castañeda-Méndez, Ana Cavalcante, Eugenia Cherepova, Alexei Chermenskii, Lauren Clark, Mauro Codeluppi, Flavia Coelho, Belinda Contreras, Alex Cran, Taylor Dao, Chrisette Dharma, Cosimo Di Castri, Victoria Diaz Balocchi, Omar Durán, Kara Earl, Adam Ellery, Tomoko Endo, Andrea Everding, Rainald Fischer, Benedito Fonseca, Chelsea C. Franklin, Susan-Beatrice Franz, Anna Fumagalli, Mauricio Galindo-Amaya, Mariagiulia Galli, Laura Gerna, Karolly Gil Ureña, Henrikki Gomes Antila, Laura Ines Gomes Maricato, Gabriela Goncalvez, Martin Gonzalez, Jesús González-Lama, Stephen Granier, Jacob Granier, Stephan Grunwald, David Guardeño-Ropero, Monica Guberti, Sridhar Guduri, Carolina Guerrero García, Jehad Haggiagi, Kacie Hale, Toshimasa Hayashi, Maiara Hermes, Dante Hernandez Colin, Yuji Hirai, Masayuki Hojo, Tetsuya Homma, Billy Hour, Andreas Huber, Diego Iacovelli, Noriomi Ishibashi, Yutaro Iwabe, Shinyu Izumi, Arne Jessen, Heiko Jessen, Wilner Jeudy, Marta Jiménez Marcos, Rebecca Johnson, Eva Juárez-Hernández, Kiyomi Kabasawa, Katarzyna Kamińska, Megumi Kawabe, Angela Kemp, Oleg Khmelnitskiy, Carina Klassen, Olena Kobrynska, Pavel Koleckar, Stephanie Korn, Marc Kornmann, Viktor Kostenko, Evgenii Kovalchuk, Yana Kovalchuk, Tim Kümmerle, Ulrike Lachmund, Kerstin Lammersmann, Flávio Lastebasse, Ivana Lattuada, Felicitas Lauer, Kyrylo Lebed, Olga Lebed, Diego Lecona-Garcia, Maria Christina Leoni, Marina Lima, Raymond Little, Holly Little, Andrea Lizardi-Díaz, Michele Lobo-Becker, Francesco Luppi, Veronica Macias, Shigefumi Maesaki, Cristiano Magnaghi, Annalisa Mancini, Stanisław Mazur, Tatiana Melnikova, Sergio Menchaca, Ibrahim Menendez-Perez, Ewa Międlar, Shuuichi Mizunuma, Anastasiya Mochalova, Mihad Mohamed, Theresa Moll, Camila Montalvo, Amber Mottola, Birgit Mück, Rebeca Mussi Brugnolli, Akanksha Nanda, Dörthe Neuner, Agatha Ngwueke, Sebastian Noe, Martin Novacek, Laura Nuzzolo-Shihadeh, Emeka Obiekwe, Isaias G. Ocampo Gaytán, Norio Ohmagari, Shin Ohta, Ptuonye Onyewuchi, Iurii Pankov, Maurício Pedrosa, Yael Peré, Alejandro Pereyra, Eliana Perez, Eduardo Perez-Alba, Paloma Perpiña Lozano, Tanya Perrei, Dena Peterson, Ligia Pierroti, Felipe Pineda-Cárdenas, Teresa Plascencia Sanchez, Camila Poletti, Chiara Pomaranzi, Lisette Portes, Nils Postel, Monica Ramirez, Isabel Ramírez, Miguel Ramirez-Baena, Mahadev Ramjee, Giovanna Ratti, Jackie Reeve, Petr Reichert, Petra Reichertová, Edgar Alejandro Reyes Garcia, Celso Ricardo, Nicomedes Rodríguez Rodríguez, Jaun Roldán Sánchez, Matilde Romero-Lopez, Tyrone Rosales, Harvey Rosales, Mohamed Roshan, Simran Roshan, Patrizia Rovere Querini, Heather Rutter, Sadaf Sachwani, Hironori Sagara, Jun Sakai, Nina Samson, José Héctor Sánchez Mijangos, Liliana Sánchez, Ana Sánchez-González, Micko Sandford, Laura Santana, Felipe Santos de Carvalho, Reiko Sasao, Lubna Sato, Elizabeth Scheuermann, Olaf Schmidt, Masafumi Seki, Safia Shaikh, Daishi Shimada, Masaharu Shinkai, Masahiro Shinoda, Jackie Smith, Fernando Solorzano, Silvia Soncini, Katalin Soregine, Erica Sosa, Olalekan Sowade, Veronika Špinková, Ruth Staniford, Iska Steigemann, Vivien Steiner, Vladimir Strelkov, Cintya R. Suárez Pineda, Hiroki Suenaga, Shintaro Suzaki, Hannah Swayze, Yuji Tada, Yuichiro Takeshita, Yasuo Takiguchi, Akihiko Tanaka, Norihito Tarumoto, Albina Tatarintseva, Michelle Taubert, Elizaveta Terenya, César Tinoco, Tomohiro Tomiyasu, Gladys Torres-Vidal, Gabriela Trejo-Aguiar, Kenji Tsushima, Emma Tunstall, Caterina Turrà, Yoandy Valdes, Nelly Valencia Castro, Guilherme Visconti, Giordano Vitali, Apinya Vutikullird, Jezdancher Watti, Doreen Werth, Cheyanne Wilson, Philippe Wilson, Amy Workman, Pamela Wörle, Christoph Wyen, Yoshiko Yamaguchi, and Kei Yamamoto

Subjects
Adult, Pulmonary and Respiratory Medicine, Treatment Outcome, Double-Blind Method, SARS-CoV-2, Outpatients, Antibodies, Monoclonal, Humans, Middle Aged, COVID-19 Drug Treatment
Abstract

Background: Early intramuscular administration of SARS-CoV-2-neutralising monoclonal antibody combination, tixagevimab–cilgavimab, to non-hospitalised adults with mild to moderate COVID-19 has potential to prevent disease progression. We aimed to evaluate the safety and efficacy of tixagevimab–cilgavimab in preventing progression to severe COVID-19 or death. Methods: TACKLE is an ongoing, phase 3, randomised, double-blind, placebo-controlled study conducted at 95 sites in the USA, Latin America, Europe, and Japan. Eligible participants were non-hospitalised adults aged 18 years or older with a laboratory-confirmed SARS-CoV-2 infection (determined by RT-PCR or an antigen test) from any respiratory tract specimen collected 3 days or less before enrolment and who had not received a COVID-19 vaccination. A WHO Clinical Progression Scale score from more than 1 to less than 4 was required for inclusion and participants had to receive the study drug 7 days or less from self-reported onset of mild to moderate COVID-19 symptoms or measured fever. Participants were randomly assigned (1:1) to receive either a single tixagevimab–cilgavimab 600 mg dose (two consecutive 3 mL intramuscular injections, one each of 300 mg tixagevimab and 300 mg cilgavimab) or placebo. Randomisation was stratified (using central blocked randomisation with randomly varying block sizes) by time from symptom onset, and high-risk versus low-risk of progression to severe COVID-19. Participants, investigators, and sponsor staff involved in the treatment or clinical evaluation and monitoring of the participants were masked to treatment-group assignments. The primary endpoints were severe COVID-19 or death from any cause through to day 29, and safety. This study is registered with ClinicalTrials.gov, NCT04723394. Findings: Between Jan 28, 2021, and July 22, 2021, 1014 participants were enrolled, of whom 910 were randomly assigned to a treatment group (456 to receive tixagevimab–cilgavimab and 454 to receive placebo). The mean age of participants was 46·1 years (SD 15·2). Severe COVID-19 or death occurred in 18 (4%) of 407 participants in the tixagevimab–cilgavimab group versus 37 (9%) of 415 participants in the placebo group (relative risk reduction 50·5% [95% CI 14·6–71·3]; p=0·0096). The absolute risk reduction was 4·5% (95% CI 1·1–8·0; p Interpretation: A single intramuscular tixagevimab–cilgavimab dose provided statistically and clinically significant protection against progression to severe COVID-19 or death versus placebo in unvaccinated individuals and safety was favourable. Treating mild to moderate COVID-19 earlier in the disease course with tixagevimab–cilgavimab might lead to more favourable outcomes.

Published
2022

5. The importance of intra-hospital pharmacovigilance in the detection of medication errors

Author

Francisco Villegas, David Figueroa-Montero, Varenka Barbero-Becerra, Eva Juárez-Hernández, Misael Uribe, Norberto Chávez-Tapia, and Octavio González-Chon

Subjects
Pharmacovigilance, Humans, Medication Errors, General Medicine, Prospective Studies, Hospitals
Abstract

Hospitalized patients are susceptible to medication errors, which represent between the fourth and the sixth cause of death. The department of intra-hospital pharmacovigilance intervenes in the entire process of medication with the purpose to prevent, repair and assess damages.To analyze medication errors reported by Mexican Fundación Clínica Médica Sur pharmacovigilance system and their impact on patients.Prospective study carried out from 2012 to 2015, where medication prescriptions given to patients were recorded. Owing to heterogeneity, data were described as absolute numbers in a logarithmic scale.292 932 prescriptions of 56 368 patients were analyzed, and 8.9% of medication errors were identified. The treating physician was responsible of 83.32% of medication errors, residents of 6.71% and interns of 0.09%. No error caused permanent damage or death.This is the pharmacovigilance study with the largest sample size reported.Los pacientes hospitalizados son susceptibles a errores de medicación, que representan entre la cuarta y sexta causa de muerte. El servicio de farmacovigilancia intrahospitalaria interviene en todo el proceso de medicación con el fin prevenir, corregir y evaluar los daños.Analizar los errores de medicación reportados por el sistema de farmacovigilancia de la Fundación Clínica Médica Sur, México, y su impacto en los pacientes.Estudio prospectivo efectuado de 2012 a 2015, en el que se registraron las prescripciones de medicamente a los pacientes. Los datos se describieron como número absoluto en escala logarítmica debido a la heterogeneidad.Se analizaron 292 932 prescripciones de 56 368 pacientes, entre las cuales se identificó 8.9 % errores de medicación. El médico tratante fue responsable de 83.32 %, los residentes de 6.71 % y los internos de 0.09 %. Ningún error causó daño permanente o muerte.El estudio de farmacovigilancia que se presenta constituye el de mayor tamaño de muestra informado.

Published
2018

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