1
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Falcón-Cama V, Montero-González T, Acosta-Medina EF, Guillen-Nieto G, Berlanga-Acosta J, Fernández-Ortega C, Alfonso-Falcón A, Gilva-Rodríguez N, López-Nocedo L, Cremata-García D, Matos-Terrero M, Pentón-Rol G, Valdés I, Oramas-Díaz L, Suarez-Batista A, Noa-Romero E, Cruz-Sui O, Sánchez D, Borrego-Díaz AI, Valdés-Carreras JE, Vizcaino A, Suárez-Alba J, Valdés-Véliz R, Bergado G, González MA, Hernandez T, Alvarez-Arzola R, Ramírez-Suárez AC, Casillas-Casanova D, Lemos-Pérez G, Blanco-Águila OR, Díaz A, González Y, Bequet-Romero M, Marín-Prida J, Hernández-Perera JC, Del Rosario-Cruz L, Marin-Díaz AP, González-Bravo M, Borrajero I, Acosta-Rivero N. Evidence of SARS-CoV-2 infection in postmortem lung, kidney, and liver samples, revealing cellular targets involved in COVID-19 pathogenesis. Arch Virol 2023; 168:96. [PMID: 36842152 PMCID: PMC9968404 DOI: 10.1007/s00705-023-05711-y] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 12/29/2022] [Indexed: 02/27/2023]
Abstract
There is an urgent need to understand severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-host interactions involved in virus spread and pathogenesis, which might contribute to the identification of new therapeutic targets. In this study, we investigated the presence of SARS-CoV-2 in postmortem lung, kidney, and liver samples of patients who died with coronavirus disease (COVID-19) and its relationship with host factors involved in virus spread and pathogenesis, using microscopy-based methods. The cases analyzed showed advanced stages of diffuse acute alveolar damage and fibrosis. We identified the SARS-CoV-2 nucleocapsid (NC) in a variety of cells, colocalizing with mitochondrial proteins, lipid droplets (LDs), and key host proteins that have been implicated in inflammation, tissue repair, and the SARS-CoV-2 life cycle (vimentin, NLRP3, fibronectin, LC3B, DDX3X, and PPARγ), pointing to vimentin and LDs as platforms involved not only in the viral life cycle but also in inflammation and pathogenesis. SARS-CoV-2 isolated from a patient´s nasal swab was grown in cell culture and used to infect hamsters. Target cells identified in human tissue samples included lung epithelial and endothelial cells; lipogenic fibroblast-like cells (FLCs) showing features of lipofibroblasts such as activated PPARγ signaling and LDs; lung FLCs expressing fibronectin and vimentin and macrophages, both with evidence of NLRP3- and IL1β-induced responses; regulatory cells expressing immune-checkpoint proteins involved in lung repair responses and contributing to inflammatory responses in the lung; CD34+ liver endothelial cells and hepatocytes expressing vimentin; renal interstitial cells; and the juxtaglomerular apparatus. This suggests that SARS-CoV-2 may directly interfere with critical lung, renal, and liver functions involved in COVID-19-pathogenesis.
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Affiliation(s)
- Viviana Falcón-Cama
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba. .,Latin American School of Medicine, Calle Panamericana Km 3 1/2, Playa, 11600, Havana, Cuba.
| | | | - Emilio F Acosta-Medina
- Center for Advanced Studies of Cuba, Havana, Cuba. .,Latin American School of Medicine, Calle Panamericana Km 3 1/2, Playa, 11600, Havana, Cuba.
| | - Gerardo Guillen-Nieto
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba.,Latin American School of Medicine, Calle Panamericana Km 3 1/2, Playa, 11600, Havana, Cuba
| | - Jorge Berlanga-Acosta
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba.,Latin American School of Medicine, Calle Panamericana Km 3 1/2, Playa, 11600, Havana, Cuba
| | - Celia Fernández-Ortega
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba.,Latin American School of Medicine, Calle Panamericana Km 3 1/2, Playa, 11600, Havana, Cuba
| | | | - Nathalie Gilva-Rodríguez
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba
| | - Lilianne López-Nocedo
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba
| | - Daina Cremata-García
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba
| | - Mariuska Matos-Terrero
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba
| | - Giselle Pentón-Rol
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba.,Latin American School of Medicine, Calle Panamericana Km 3 1/2, Playa, 11600, Havana, Cuba
| | - Iris Valdés
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba
| | - Leonardo Oramas-Díaz
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba
| | - Anamarys Suarez-Batista
- Department of Virology, Civilian Defense Scientific Research Center (CICDC), Havana, Mayabeque, Cuba
| | - Enrique Noa-Romero
- Department of Virology, Civilian Defense Scientific Research Center (CICDC), Havana, Mayabeque, Cuba
| | - Otto Cruz-Sui
- Department of Virology, Civilian Defense Scientific Research Center (CICDC), Havana, Mayabeque, Cuba
| | | | | | | | | | - José Suárez-Alba
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba
| | - Rodolfo Valdés-Véliz
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba
| | - Gretchen Bergado
- Direction of Immunology and Immunotherapy, Center of Molecular Immunology, Havana, Cuba
| | - Miguel A González
- Direction of Immunology and Immunotherapy, Center of Molecular Immunology, Havana, Cuba
| | - Tays Hernandez
- Direction of Immunology and Immunotherapy, Center of Molecular Immunology, Havana, Cuba
| | - Rydell Alvarez-Arzola
- Direction of Immunology and Immunotherapy, Center of Molecular Immunology, Havana, Cuba
| | - Anna C Ramírez-Suárez
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba
| | - Dionne Casillas-Casanova
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba
| | - Gilda Lemos-Pérez
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba
| | | | | | | | - Mónica Bequet-Romero
- Center for Genetic Engineering and Biotechnology (CIGB), Ave 31 be/ 158 and 190, Cubanacán, Playa, PO Box 6162, 10699, Havana, Cuba
| | - Javier Marín-Prida
- Center for Research and Biological Evaluations, Institute of Pharmacy and Food, University of Havana, Havana, Cuba
| | | | | | - Alina P Marin-Díaz
- International Orthopedic Scientific Complex 'Frank Pais Garcia', Havana, Cuba
| | - Maritza González-Bravo
- Latin American School of Medicine, Calle Panamericana Km 3 1/2, Playa, 11600, Havana, Cuba
| | | | - Nelson Acosta-Rivero
- Center for Protein Studies, Department of Biochemistry, Faculty of Biology, University of Habana, Calle 25 entre J e I, #455, Plaza de la Revolucion, 10400, Havana, Cuba. .,Department of Infectious Diseases, Centre for Integrative Infectious Disease Research (CIID), Molecular Virology, University of Heidelberg, Medical Faculty Heidelberg, INF 344, GO.1, 69120, Heidelberg, Germany.
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2
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Flores J, Moriarty A, Lizette F, Lang A, Rosenthal A, Papadopoulos K, Beeram M, Patnaik A, Rasco D, DeBerry B, Elmi M, Drengler R, Hernandez T, Sharma M, Lakhani N, Smith L, Moreno V, Calvo E, Garcia-Foncillas J, Wick M. Identification and molecular characterization of invasive lobular breast cancer models in a panel of 180 breast XPDX models. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01121-2] [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] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Santana-Mederos D, Perez-Nicado R, Climent Y, Rodriguez L, Ramirez BS, Perez-Rodriguez S, Rodriguez M, Labrada C, Hernandez T, Diaz M, Orosa I, Ramirez U, Oliva R, Garrido R, Cardoso F, Landys M, Martinez R, Gonzalez H, Hernandez T, Ochoa-Azze R, Perez JL, Enriquez J, Gonzalez N, Infante Y, Espinosa LA, Ramos Y, González LJ, Valenzuela C, Casadesus AV, Fernandez B, Rojas G, Pérez-Massón B, Tundidor Y, Bermudez E, Plasencia CA, Boggiano T, Ojito E, Chiodo F, Fernandez S, Paquet F, Fang C, Chen GW, Rivera DG, Valdes-Balbin Y, Garcia-Rivera D, Verez Bencomo V. A COVID-19 vaccine candidate composed of the SARS-CoV-2 RBD dimer and Neisseria meningitidis outer membrane vesicles. RSC Chem Biol 2022; 3:242-249. [PMID: 35360883 PMCID: PMC8826971 DOI: 10.1039/d1cb00200g] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 12/01/2021] [Indexed: 02/05/2023] Open
Abstract
Soberana01 is composed of the SARS-CoV-2 dimeric RBD and Neisseria meningitidis outer membrane vesicles (OMVs) adsorbed on alum. This vaccine induces a potent neutralizing immune response and shows potential against SARS-CoV-2 variants of concern.
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Affiliation(s)
| | | | - Yanet Climent
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | - Laura Rodriguez
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | | | | | - Meybi Rodriguez
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | - Claudia Labrada
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | - Tays Hernandez
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Marianniz Diaz
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Ivette Orosa
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Ubel Ramirez
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | - Reynaldo Oliva
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | - Raine Garrido
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | - Felix Cardoso
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | - Mario Landys
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | | | | | | | | | - Jose L. Perez
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | - Juliet Enriquez
- National Civil Defense Research Laboratory, Mayabeque 32700, Cuba
| | - Nibaldo Gonzalez
- National Civil Defense Research Laboratory, Mayabeque 32700, Cuba
| | - Yenicet Infante
- National Civil Defense Research Laboratory, Mayabeque 32700, Cuba
| | - Luis A. Espinosa
- Center for Genetic Engineering and Biotechnology, Ave 31 e/158 y 190, Havana 10600, Cuba
| | - Yassel Ramos
- Center for Genetic Engineering and Biotechnology, Ave 31 e/158 y 190, Havana 10600, Cuba
| | - Luis Javier González
- Center for Genetic Engineering and Biotechnology, Ave 31 e/158 y 190, Havana 10600, Cuba
| | - Carmen Valenzuela
- Institute of Cybernetics, Mathematics and Physics, Havana 10400, Cuba
| | | | - Briandy Fernandez
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Gertrudis Rojas
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | | | - Yaima Tundidor
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Ernesto Bermudez
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | | | - Tammy Boggiano
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Eduardo Ojito
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Fabrizio Chiodo
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands and Institute of Biomolecular Chemistry, National Research Council (CNR), Pozzuoli, Napoli, Italy
| | | | - Françoise Paquet
- Centre de Biophysique Moléculaire, CNRS UPR 4301, rue Charles Sadron, F-45071, Orléans Cedex 2, France
| | - Cheng Fang
- Shanghai Fenglin Glycodrug Promotion Center, Shanghai 200032, China
| | - Guang-Wu Chen
- Chengdu Olisynn Biotech. Co. Ltd., and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, People's Republic of China
| | - Daniel G. Rivera
- Laboratory of Synthetic and Biomolecular Chemistry, Faculty of Chemistry, University of Havana, Zapata y G, Havana 10400, Cuba
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Brady PC, Cummings ME, Gruev V, Hernandez T, Blair S, Vail A, Garcia M. In situ measurements of reef squid polarization patterns using two-dimensional polarization data mapped onto three-dimensional tessellated surfaces. J R Soc Interface 2021; 18:20210703. [PMID: 34814730 DOI: 10.1098/rsif.2021.0703] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Reef squids belong to a group reputed for polarization sensitivity, yet polarization patterns of reef squid have not been quantified in situ. To quantify polarization patterns from video polarimetric data, we developed a protocol to map two-dimensional polarization data onto squid-shaped three-dimensional tessellated surfaces. This protocol provided a robust data container used to investigate three-dimensional regions-of-interest, producing data lineouts derived from the squid's geometry. This protocol also extracted polarimeter and squid body orientations and the solar heading from polarization images. When averaged over the solar heading, the ventral midline gave a low degree of polarization (2.4 ± 5.3%), and the area between the ventral and flank midlines had higher values (9.0 ± 5.3%). These averaged data had a large discontinuity in the angle of polarization (AoP) at the mantle's ventral midline (64 ± 55°), with larger discontinuities measured on individual squid. Ray-tracing calculations demonstrated that the AoP pattern was not related to the squid's surface-normal geometry. However, the AoP followed virtual striation axes on the squid's surface oriented 24° to the squid's long axis, similar in angle (27°) to the striations of birefringent collagen fibres documented in other squid species' skin.
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Affiliation(s)
- P C Brady
- Integrative Biology, University of Texas at Austin School of Biological Sciences, Austin, TX 78712-0128, USA
| | - M E Cummings
- Integrative Biology, University of Texas at Austin School of Biological Sciences, Austin, TX 78712-0128, USA
| | - V Gruev
- University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - T Hernandez
- University of California San Diego, La Jolla, CA, USA
| | - S Blair
- University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - A Vail
- University of Cambridge, Cambridge, UK
| | - M Garcia
- University of Illinois at Urbana-Champaign, Urbana, IL, USA
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5
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Valdes-Balbin Y, Santana-Mederos D, Quintero L, Fernández S, Rodriguez L, Sanchez Ramirez B, Perez-Nicado R, Acosta C, Méndez Y, Ricardo MG, Hernandez T, Bergado G, Pi F, Valdes A, Carmenate T, Ramirez U, Oliva R, Soubal JP, Garrido R, Cardoso F, Landys M, Gonzalez H, Farinas M, Enriquez J, Noa E, Suarez A, Fang C, Espinosa LA, Ramos Y, González LJ, Climent Y, Rojas G, Relova-Hernández E, Cabrera Infante Y, Losada SL, Boggiano T, Ojito E, León K, Chiodo F, Paquet F, Chen GW, Rivera DG, Garcia-Rivera D, Verez Bencomo V. SARS-CoV-2 RBD-Tetanus Toxoid Conjugate Vaccine Induces a Strong Neutralizing Immunity in Preclinical Studies. ACS Chem Biol 2021; 16:1223-1233. [PMID: 34219448 DOI: 10.1021/acschembio.1c00272] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Controlling the global COVID-19 pandemic depends, among other measures, on developing preventive vaccines at an unprecedented pace. Vaccines approved for use and those in development intend to elicit neutralizing antibodies to block viral sites binding to the host's cellular receptors. Virus infection is mediated by the spike glycoprotein trimer on the virion surface via its receptor binding domain (RBD). Antibody response to this domain is an important outcome of immunization and correlates well with viral neutralization. Here, we show that macromolecular constructs with recombinant RBD conjugated to tetanus toxoid (TT) induce a potent immune response in laboratory animals. Some advantages of immunization with RBD-TT conjugates include a predominant IgG immune response due to affinity maturation and long-term specific B-memory cells. These result demonstrate the potential of the conjugate COVID-19 vaccine candidates and enable their advance to clinical evaluation under the name SOBERANA02, paving the way for other antiviral conjugate vaccines.
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Affiliation(s)
| | | | - Lauren Quintero
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | | | - Laura Rodriguez
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | | | | | - Claudia Acosta
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | - Yanira Méndez
- Laboratory of Synthetic and Biomolecular Chemistry, Faculty of Chemistry, University of Havana, Zapata y G, Havana 10400, Cuba
| | - Manuel G. Ricardo
- Laboratory of Synthetic and Biomolecular Chemistry, Faculty of Chemistry, University of Havana, Zapata y G, Havana 10400, Cuba
| | - Tays Hernandez
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Gretchen Bergado
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Franciscary Pi
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Annet Valdes
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Tania Carmenate
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Ubel Ramirez
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | - Reinaldo Oliva
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | | | - Raine Garrido
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | - Felix Cardoso
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | - Mario Landys
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | | | - Mildrey Farinas
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | - Juliet Enriquez
- National Civil Defense Research Laboratory, Mayabeque 32700, Cuba
| | - Enrique Noa
- National Civil Defense Research Laboratory, Mayabeque 32700, Cuba
| | - Anamary Suarez
- National Civil Defense Research Laboratory, Mayabeque 32700, Cuba
| | - Cheng Fang
- Shanghai Fenglin Glycodrug Promotion Center, Shanghai 200032, China
| | - Luis A. Espinosa
- Center for Genetic Engineering and Biotechnology, Ave 31 e/158 y 190, Havana 10600, Cuba
| | - Yassel Ramos
- Center for Genetic Engineering and Biotechnology, Ave 31 e/158 y 190, Havana 10600, Cuba
| | - Luis Javier González
- Center for Genetic Engineering and Biotechnology, Ave 31 e/158 y 190, Havana 10600, Cuba
| | - Yanet Climent
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
| | - Gertrudis Rojas
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | | | | | - Sum Lai Losada
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Tammy Boggiano
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Eduardo Ojito
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Kalet León
- Center of Molecular Immunology, P.O. Box 16040, 216 St., Havana, Cuba
| | - Fabrizio Chiodo
- Finlay Vaccine Institute, 200 and 21 Street, Havana 11600, Cuba
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam 1081HV, The Netherlands
- Institute of Biomolecular Chemistry, National Research Council (CNR), Pozzuoli 80078, Napoli, Italy
| | - Françoise Paquet
- Centre de Biophysique Moléculaire, CNRS UPR 4301, rue Charles Sadron F-45071, Orléans, Cedex 2, France
| | - Guang-Wu Chen
- Chengdu Olisynn Biotech. Co. Ltd., and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, People’s Republic of China
| | - Daniel G. Rivera
- Laboratory of Synthetic and Biomolecular Chemistry, Faculty of Chemistry, University of Havana, Zapata y G, Havana 10400, Cuba
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Valdes-Balbin Y, Santana-Mederos D, Paquet F, Fernandez S, Climent Y, Chiodo F, Rodríguez L, Sanchez Ramirez B, Leon K, Hernandez T, Castellanos-Serra L, Garrido R, Chen GW, Garcia-Rivera D, Rivera DG, Verez-Bencomo V. Molecular Aspects Concerning the Use of the SARS-CoV-2 Receptor Binding Domain as a Target for Preventive Vaccines. ACS Cent Sci 2021; 7:757-767. [PMID: 34075345 PMCID: PMC8084267 DOI: 10.1021/acscentsci.1c00216] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Indexed: 02/08/2023]
Abstract
The development of recombinant COVID-19 vaccines has resulted from scientific progress made at an unprecedented speed during 2020. The recombinant spike glycoprotein monomer, its trimer, and its recombinant receptor-binding domain (RBD) induce a potent anti-RBD neutralizing antibody response in animals. In COVID-19 convalescent sera, there is a good correlation between the antibody response and potent neutralization. In this review, we summarize with a critical view the molecular aspects associated with the interaction of SARS-CoV-2 RBD with its receptor in human cells, the angiotensin-converting enzyme 2 (ACE2), the epitopes involved in the neutralizing activity, and the impact of virus mutations thereof. Recent trends in RBD-based vaccines are analyzed, providing detailed insights into the role of antigen display and multivalence in the immune response of vaccines under development.
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Affiliation(s)
| | | | - Françoise Paquet
- Centre
de Biophysique Moléculaire, Centre
National de la Recherche Scientifique UPR 4301, rue Charles Sadron, F-45071, Orléans, Cedex 2, France
| | | | - Yanet Climent
- Finlay
Vaccine Institute, 200
and 21 Street, Havana 11600, Cuba
| | - Fabrizio Chiodo
- Department
of Molecular Cell Biology and Immunology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands, 1081 HV
- Institute
of Biomolecular Chemistry, National Research
Council (CNR), Pozzuoli, Napoli, Italy
| | - Laura Rodríguez
- Finlay
Vaccine Institute, 200
and 21 Street, Havana 11600, Cuba
| | | | - Kalet Leon
- Center
of Molecular Immunology, P.O. Box 16040, 216 Street, Havana, Cuba
| | - Tays Hernandez
- Center
of Molecular Immunology, P.O. Box 16040, 216 Street, Havana, Cuba
| | | | - Raine Garrido
- Finlay
Vaccine Institute, 200
and 21 Street, Havana 11600, Cuba
| | - Guang-Wu Chen
- Chengdu
Olisynn Biotech. Co. Ltd. and State Key Laboratory of Biotherapy and
Cancer Center, West China Hospital, Sichuan
University, Chengdu 610041, People’s Republic of China
| | | | - Daniel G. Rivera
- Laboratory
of Synthetic and Biomolecular Chemistry, Faculty of Chemistry, University of Havana, Zapata & G, Havana 10400, Cuba
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7
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Rubio-Perez J, Hernandez R, Hernandez T, Doger B, Casado V, Moreno V. Dostarlimab for the treatment of endometrium cancer and other solid tumors. Drugs Today (Barc) 2021; 57:187-197. [DOI: 10.1358/dot.2021.57.3.3233363] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Montenegro D, Martinez L, Tay K, Hernandez T, Noriega D, Barbosa L, Muñoz J, Mateus H, Daza J, Teherán A, Ramírez JD. Usefulness of autocidal gravid ovitraps for the surveillance and control of Aedes (Stegomyia) aegypti (Diptera: Culicidae) in eastern Colombia. Med Vet Entomol 2020; 34:379-384. [PMID: 32232987 DOI: 10.1111/mve.12443] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 03/11/2020] [Accepted: 03/15/2020] [Indexed: 06/10/2023]
Abstract
In the past decade, new strategies have been developed to control the Aedes aegypti (Diptera: Culicidae) mosquito vector, as well as a broad range of arboviral agents. Vector control surveillance programmes in Puerto Rico and Australia have implemented the Centers for Disease Control and Prevention autocidal gravid ovitrap (AGO), which has had an impact on vector density and, consequently, the epidemiology of arboviral infections. Colombia intends to establish the AGO as a new tool for the surveillance and control of the A. aegypti vector. AGOs were evaluated in a hyperendemic area for dengue virus during an 8-week period in Villavicencio city, eastern Colombia. The results indicated that the AGOs detect a high density of A. aegypti, with positive results for these traps of over 80% and an average catch of six individuals per trap per week. Acceptance of AGOs in the community exceeded 95%, and adherence was around 89%. This study's results demonstrate, for the first time in Colombia, that traps are a useful tool for the surveillance of A. aegypti. Future studies must consider the implementation of AGOs in the region.
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Affiliation(s)
- D Montenegro
- Centro de Investigaciones Ambientales José Antonio Candamo-CIAM/Programa de Ingeniería Ambiental de la Corporación Universitaria del Meta-UNIMETA, Villavicencio, Colombia
- Fundación Chilloa, Santa Marta, Colombia
| | - L Martinez
- Centro de Investigaciones Ambientales José Antonio Candamo-CIAM/Programa de Ingeniería Ambiental de la Corporación Universitaria del Meta-UNIMETA, Villavicencio, Colombia
| | - K Tay
- Centro de Investigaciones Ambientales José Antonio Candamo-CIAM/Programa de Ingeniería Ambiental de la Corporación Universitaria del Meta-UNIMETA, Villavicencio, Colombia
| | - T Hernandez
- Centro de Investigaciones Ambientales José Antonio Candamo-CIAM/Programa de Ingeniería Ambiental de la Corporación Universitaria del Meta-UNIMETA, Villavicencio, Colombia
| | - D Noriega
- Centro de Investigaciones Ambientales José Antonio Candamo-CIAM/Programa de Ingeniería Ambiental de la Corporación Universitaria del Meta-UNIMETA, Villavicencio, Colombia
| | - L Barbosa
- Empresa Social del Estado de Villavicencio, Villavicencio, Colombia
| | - J Muñoz
- Empresa Social del Estado de Villavicencio, Villavicencio, Colombia
| | - H Mateus
- Secretaria Local de Salud de Villavicencio, Alcaldía de Villavicencio, Villavicencio, Colombia
| | - J Daza
- Secretaria Local de Salud de Villavicencio, Alcaldía de Villavicencio, Villavicencio, Colombia
| | - A Teherán
- Grupo COMPLEXUS, Fundación Universitaria Juan N Corpas, Bogotá, Colombia
| | - J D Ramírez
- Grupo de Investigaciones Microbiológicas-UR (GIMUR), Departamento de Biología, Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
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Villar MV, Spreafico A, Moreno V, Braña I, Hernandez T, Razak AA, Wang J, Haddish-Berhane N, Mehta J, Johnson A, Maes A, Haslam J, Mistry P, Kalota A, Lenox L, Infante J, Lorenzi M, Xie H, Lauring J, Patel M. 537MO First-in-human study of JNJ-64619178, a protein arginine methyltransferase 5 (PRMT5) inhibitor, in patients with advanced cancers. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.651] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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10
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Utili M, Bassini S, Boccaccini L, Bühler L, Cismondi F, Del Nevo A, Eboli M, DiFonzo F, Hernandez T, Wulf S, Kordač M, Martelli D, De les Valls EM, Melichar T, Mistrangelo C, Tarantino M, Tincani A, Vála L. Status of Pb-16Li technologies for European DEMO fusion reactor. Fusion Engineering and Design 2019. [DOI: 10.1016/j.fusengdes.2019.04.083] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Doger de Spéville B, Moreno V, Hernandez T, Boni V, de Miguel M, Rojo F, Lopez-Rios F, Calvo E. Lack of efficiency of precision oncology with target-based investigational treatments for patients in early phase clinical trials based on pre-screened molecular alterations. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy303.003] [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] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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12
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13
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Jayaram A, Nowakowska K, Mateo J, Hernandez T, Kumar S, Fulton B, Nava Rodrigues D, Riisnaes R, Zukiwski A, Proniuk S, Bexon A, Bisaha J, Bianchini D, Zafeiriou Z, Lopez R, Tunariu N, Pacey S, Jones R, de Bono JS, Attard G. Phase 1-2 study of progesterone receptor (PR) inhibition with extended-release (ER) onapristone (ONA) alone or in combination with abiraterone (AA) in patients (pts) with castration-resistant prostate cancer (CRPC) incorporating plasma DNA analysis to define androgen receptor (AR) status. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx513.007] [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: 11/13/2022] Open
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14
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Young BE, Patinkin Z, Palmer C, de la Houssaye B, Barbour LA, Hernandez T, Friedman JE, Krebs NF. Human milk insulin is related to maternal plasma insulin and BMI: but other components of human milk do not differ by BMI. Eur J Clin Nutr 2017; 71:1094-1100. [PMID: 28513622 PMCID: PMC5587359 DOI: 10.1038/ejcn.2017.75] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 02/28/2017] [Accepted: 03/07/2017] [Indexed: 01/10/2023]
Abstract
Background The impact of maternal BMI and insulin sensitivity on bioactive components of human milk (HM) is not well understood. As the prevalence of obesity and diabetes rises, it is increasingly critical that we understand how maternal BMI and hormones associated with metabolic disease relate to concentrations of bioactive components in HM. Methods This longitudinal cohort design followed 48 breastfeeding mothers through the first four months of lactation, collecting fasting morning HM samples at 2-weeks and 1, 2, 3, and 4-months, and fasting maternal blood at 2-weeks and 4-months. Insulin, glucose, adipokines leptin and adiponectin, appetite regulating hormone ghrelin, marker of oxidative stress 8OHdG, and inflammatory cytokines (IL-6, IL-8, and TNF-a) were measured in HM and maternal plasma. Results 26 normal weight (NW) (BMI=21.4±2.0 kg/m2), and 22 overweight/obese (OW/Ob) (BMI=30.4±4.2 kg/m2) were followed. Of all HM analytes measured, only insulin and leptin were different between groups - consistently higher in the OW/Ob group (leptin: p<0.001; insulin: p<0.03). HM insulin was 98% higher than maternal plasma insulin at 2-weeks and 32% higher at 4-months (p<0.001). Maternal fasting plasma insulin and HOMA-IR were positively related to HM insulin at 2-weeks (p<0.001, R2≥0.38, n=31), and 4-months (p≤0.005, R2≥0.20, n=38). Conclusions The concentrations of insulin in HM are higher than in maternal plasma and are related to maternal BMI and insulin sensitivity. With the exception of leptin, there were minimal other differences observed in HM composition across a wide range in maternal BMI.
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Affiliation(s)
- B E Young
- Department of Pediatrics, Section of Nutrition, School of Medicine, University of Colorado, Aurora, CO, USA
| | - Z Patinkin
- Department of Pediatrics, Section of Nutrition, School of Medicine, University of Colorado, Aurora, CO, USA
| | - C Palmer
- Department of Pediatrics, Section of Nutrition, School of Medicine, University of Colorado, Aurora, CO, USA
| | - B de la Houssaye
- Department of Pediatrics, Section of Neonatology, School of Medicine, University of Colorado, Aurora, CO, USA
| | - L A Barbour
- Department of Medicine, Division of Endocrinology, Metabolism, and Diabetes, School of Medicine, University of Colorado, Aurora, CO, USA.,Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, School of Medicine, University of Colorado, Aurora, CO, USA
| | - T Hernandez
- Department of Medicine, Division of Endocrinology, Metabolism, and Diabetes, School of Medicine, University of Colorado, Aurora, CO, USA.,Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, School of Medicine, University of Colorado, Aurora, CO, USA.,College of Nursing, University of Colorado, Aurora, CO, USA
| | - J E Friedman
- Department of Pediatrics, Section of Neonatology, School of Medicine, University of Colorado, Aurora, CO, USA.,Department of Medicine, Division of Endocrinology, Metabolism, and Diabetes, School of Medicine, University of Colorado, Aurora, CO, USA
| | - N F Krebs
- Department of Pediatrics, Section of Nutrition, School of Medicine, University of Colorado, Aurora, CO, USA
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Higdon JC, Guerin MK, Holliday M, Goodrich JA, Sares SM, Rueda MA, Poddar S, Byrnes WC, Hernandez T, McQueen M, Wright KP. 0791 SLEEP HEALTH OF DIVISION 1 COLLEGIATE VARSITY ATHLETES AND IMPACT OF TRAVEL FOR COMPETITION. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.790] [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] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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16
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Parrado J, Rodriguez-Morgado B, Tejada M, Hernandez T, Garcia C. Proteomic analysis of enzyme production by Bacillus licheniformis using different feather wastes as the sole fermentation media. Enzyme Microb Technol 2014; 57:1-7. [PMID: 24629261 DOI: 10.1016/j.enzmictec.2014.01.001] [Citation(s) in RCA: 45] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 01/02/2014] [Accepted: 01/04/2014] [Indexed: 11/15/2022]
Abstract
This study evaluates the use of different types of feathers as fermentation media for enzyme production. Bacillus licheniformis was grown on the feathers, which lead to total biodegradation due to bacterial enzymatic hydrolytic excretion. B. licheniformis excretes protease and lipase activity, with feather concentration being the main parameter controlling their generation. Using a proteomic approach, the proteins excreted during fermentation were identified, and the influence of the chemical composition of the feathers on protein secretion was tested. The identified proteins are hydrolytic enzymes such as keratinase, gamma-glutamyltranspeptidase, chitosanases, and glicosidases. The diversity of proteins is related to the chemical complexity of the feathers. Understanding the composition of a hydrolytic system, when B. licheniformis is cultured on different feathers, may assist in utilizing such a system for producing different hydrolytic enzymes. The data indicate that proteomics can be a valuable tool for describing the physiological state of B. licheniformis cell populations growing on different wastes.
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Affiliation(s)
- J Parrado
- Departamento de Bioquímica y Biología Molecular, Universidad de Sevilla, C/ Profesor García González 2, 41012 Sevilla, Spain.
| | - B Rodriguez-Morgado
- Departamento de Bioquímica y Biología Molecular, Universidad de Sevilla, C/ Profesor García González 2, 41012 Sevilla, Spain
| | - M Tejada
- Departamento de Cristalografía, Mineralogía y Química Agrícola, Universidad de Sevilla, Cta. Utrera Km 1, 41089 Sevilla, Spain
| | - T Hernandez
- Department of Soil and Water Conservation and Organic Waste Management, CEBAS-CSIC, P.O. Box 164, 30100 Espinardo, Murcia, Spain
| | - C Garcia
- Department of Soil and Water Conservation and Organic Waste Management, CEBAS-CSIC, P.O. Box 164, 30100 Espinardo, Murcia, Spain
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17
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Martin P, Hernandez T, Hodgson E. Commercial dielectric coated mirrors for ITER diagnostic applications. Fusion Engineering and Design 2009. [DOI: 10.1016/j.fusengdes.2008.11.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Hernandez T, Estrella I, Pérez-Gordo M, Alegría EG, Tenorio C, Ruiz-Larrrea F, Moreno-Arribas MV. Contribution of malolactic fermentation by Oenococcus oeni and Lactobacillus plantarum to the changes in the nonanthocyanin polyphenolic composition of red wine. J Agric Food Chem 2007; 55:5260-6. [PMID: 17530768 DOI: 10.1021/jf063638o] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The changes in the nonanthocyanin phenolic composition during red wine malolactic fermentation carried out spontaneously and by four different starter cultures of the species Oenococcus oeni and Lactobacillus plantarum were examined to determine whether differences in nonanthocyanin polyphenolic compounds could be attributed to the lactic acid bacteria (LAB) strain that performs this important step of the wine-making process. The polyphenolic compounds were analyzed by high-performance liquid chromatography with photodiode array detection and HPLC with electrospray ionization-mass spectrometry detection. The malolactic cultures selected for this study were indigenous wine LAB strains from the A.O.C. Rioja (Spain). Results showed different malolactic behaviors in relation to wine phenolic compositions for O. oeni and L. plantarum, and also, a diversity was found within each group. The hydroxycinnamic acids and their derivatives, the flavonols and their glycosides, the flavanol monomers and oligomers, and trans-resveratrol and its glucoside were the main compounds modified by the different LAB. The wild LAB population exerted a greater impact in the wine content of some of these phenolic compounds than the inoculated selected monocultures of this study.
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Affiliation(s)
- T Hernandez
- Instituto de Fermentaciones Industriales, Consejo Superior de Investigaciones Científicas, Juan de la Cierva, 3. 28006 Madrid, Spain
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19
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Perez-Pinera P, Hernandez T, García-Suárez O, de Carlos F, Germana A, Del Valle M, Astudillo A, Vega JA. The Trk tyrosine kinase inhibitor K252a regulates growth of lung adenocarcinomas. Mol Cell Biochem 2006; 295:19-26. [PMID: 16862449 DOI: 10.1007/s11010-006-9267-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [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: 03/08/2006] [Accepted: 06/26/2006] [Indexed: 12/24/2022]
Abstract
The neurotrophin family of growth factors and their receptors support the survival of several neuronal and non-neuronal cell populations during embryonic development and adult life. Neurotrophins are also involved in malignant transformation. To seek the role of neurotrophin signaling in human lung cancer we studied the expression of neurotrophin receptors in human lung adenocarcinomas and investigated the effect of the neurotrophin receptor inhibitor K252a in A549 cell survival and colony formation ability in soft agar. We showed that human lung adenocarcinomas express TrkA and TrkB, but not TrkC; A549 cells, derived from a human lung adenocarcinoma, express mRNA transcripts encoding nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), TrkA, TrkB, and p75, and high protein levels of TrkA and TrkB. Stimulation of cells using NGF or BDNF activates the anti-apoptotic protein Akt. Interestingly, inhibition of neurotrophin receptor signaling using K252a prevents Akt activation in response to NGF or BDNF, induces apoptotic cell death, and diminishes the ability of A549 cells to growth in soft agar. The data suggest that neurotrophin signaling inhibition using k252a may be a valid therapy to treat patients with lung adenocarcinomas.
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MESH Headings
- Adenocarcinoma/enzymology
- Adenocarcinoma/genetics
- Adenocarcinoma/pathology
- Adult
- Apoptosis/drug effects
- Carbazoles/pharmacology
- Caspase 3/metabolism
- Cell Line, Tumor
- Dose-Response Relationship, Drug
- Enzyme Activation/drug effects
- Female
- Gene Expression Regulation, Neoplastic/drug effects
- Humans
- Indole Alkaloids
- Lung Neoplasms/enzymology
- Lung Neoplasms/genetics
- Lung Neoplasms/pathology
- Male
- Middle Aged
- Nerve Growth Factors/genetics
- Nerve Growth Factors/metabolism
- Phosphorylation/drug effects
- Phosphoserine/metabolism
- Proto-Oncogene Proteins c-akt/metabolism
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Receptor Protein-Tyrosine Kinases/antagonists & inhibitors
- Receptor Protein-Tyrosine Kinases/genetics
- Receptor Protein-Tyrosine Kinases/metabolism
- Receptor, trkA/antagonists & inhibitors
- Receptor, trkA/genetics
- Receptor, trkA/metabolism
- Receptor, trkB/antagonists & inhibitors
- Receptor, trkB/genetics
- Receptor, trkB/metabolism
- Receptor, trkC/antagonists & inhibitors
- Receptor, trkC/genetics
- Receptor, trkC/metabolism
- Tumor Stem Cell Assay
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Affiliation(s)
- P Perez-Pinera
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, Julián Clavería S/N, Oviedo, Spain.
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20
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Mayrovitz HN, Sims N, Hill CJ, Hernandez T, Greenshner A, Diep H. Hand volume estimates based on a geometric algorithm in comparison to water displacement. Lymphology 2006; 39:95-103. [PMID: 16910100] [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: 05/11/2023]
Abstract
Assessing changes in upper extremity limb volume during lymphedema therapy is important for determining treatment efficacy and documenting outcomes. Although arm volumes may be determined by tape measure, the suitability of circumference measurements to estimate hand volumes is questionable because of the deviation in circularity of hand shape. Our aim was to develop an alternative measurement procedure and algorithm for routine use to estimate hand volumes. A caliper was used to measure hand width and depth in 33 subjects (66 hands) and volumes (VE) were calculated using an elliptical frustum model. Using regression analysis and limits of agreement (LOA), VE was compared to volumes determined by water displacement (VW), to volumes calculated from tape-measure determined circumferences (VC), and to a trapezoidal model (VT). VW and VE (mean +/- SD) were similar (363 +/- 98 vs. 362 +/-100 ml) and highly correlated; VE = 1.01VW -3.1 ml, r=0.986, p<0.001, with LOA of +/- 33.5 ml and +/- 9.9 %. In contrast, VC (480 +/- 138 ml) and VT (432 +/- 122 ml) significantly overestimated volume (p<0.0001). These results indicate that the elliptical algorithm can be a useful alternative to water displacement when hand volumes are needed and the water displacement method is contra-indicated, impractical to implement, too time consuming or not available.
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Affiliation(s)
- H N Mayrovitz
- College of Medical Sciences, Nova Southeastern University, Ft Lauderdale, Florida 33328, USA.
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21
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Hernandez T, Sierra A, Rodriguez-Alvarez C, Torres A, Arevalo MP, Calvo M, Arias A. Salmonella enterica serotypes isolated from imported frozen chicken meat in the Canary islands. J Food Prot 2005; 68:2702-6. [PMID: 16355846 DOI: 10.4315/0362-028x-68.12.2702] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
To determine the prevalence of Salmonella enterica serotypes in imported frozen chicken meat, 406 samples (whole chicken, legs, and breast meat) were analyzed for Salmonella according to ISO6579 rules, serotypes were assigned, and phage typing was conducted for Salmonella serotypes Enteritidis, Typhimurium, and Heidelberg. The overall frequency of Salmonella isolation was 16.5%. By country of origin, the highest percentage of cases was found among the samples from France followed by samples from Brazil. The differences between legs and breast meat were significant. The most frequently isolated serotype of Salmonella was Enteritidis, followed by Salmonella Heidelberg, Salmonella Typhimurium, and Salmonella Virchow. By country of origin, we identified a large percentage of serotype Salmonella Enteritidis in the samples imported from Brazil. There was a greater diversity of serotypes isolated from the French samples, and Salmonella Enteritidis was not the dominant strain. In the samples from the United States, the only serotype isolated was Salmonella Kentucky, although a smaller number of samples was analyzed. The Salmonella Enteritidis phage type that prevailed in both France and Brazil was 4. Phage types 204c and 204 were identified for Salmonella Typhimurium, and phage types 8, 31, and 37 were identified for Salmonella Virchow.
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Affiliation(s)
- T Hernandez
- Preventive Medicine and Public Health Department, University of La Laguna, Tenerife, Canary Islands, Spain
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Marin JA, Hernandez T, Garcia C. Bioremediation of oil refinery sludge by landfarming in semiarid conditions: influence on soil microbial activity. Environ Res 2005; 98:185-195. [PMID: 15820724 DOI: 10.1016/j.envres.2004.06.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2004] [Revised: 06/02/2004] [Accepted: 06/11/2004] [Indexed: 05/24/2023]
Abstract
Bioremediation of a refinery sludge containing hydrocarbons in a semi-arid climate using landfarming techniques is described. The objective of this study was to assess the ability of this technique to reduce the total hydrocarbon content added to the soil with the refinery sludge in semiarid climate (low rain and high temperature). In addition, we have evaluated the effect of this technique on the microbial activity of the soil involved. For this, biological parameters (carbon fractions, microbial biomass carbon, basal respiration and ATP) and biochemical parameters(different enzymatic activities) were determined. The results showed that 80% of the hydrocarbons were eliminated in eleven months, half of this reduction taking place during the first three months. The labile carbon fractions, MBC, basal respiration and ATP of the soils submitted to landfarming showed higher values than the control soil during the first months of the process, although these values fell down by the end of the experimental period as the hydrocarbons were degraded by mineralisation. All the enzymatic activities studied: oxidoreductases such as dehydrogenase activity, and hydrolases of C(beta-glucosidase activity) and N Cycle (urease and protease) showed higher values in the soils amended with the refinery sludge than in the control. As in the case of the previous parameters, these value fell down as the bioremediation of the hydrocarbons progressed, many of them reaching levels similar to those of the control soil after eleven months.
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Affiliation(s)
- J A Marin
- Department of Soil and Water Conservation and Waste Management, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), P.O. Box 164, 30100 Murcia, Spain
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24
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Hernandez T, Moroño A, Hodgson E. Radiation enhanced degradation of aluminium mirrors for remote handling and diagnostics applications. Fusion Engineering and Design 2003. [DOI: 10.1016/s0920-3796(03)00332-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Hernandez T, Rodriguez-Alvarez C, Arevalo MP, Torres A, Sierra A, Arias A. Antimicrobial-resistant Salmonella enterica serovars isolated from chickens in Spain. J Chemother 2002; 14:346-50. [PMID: 12420851 DOI: 10.1179/joc.2002.14.4.346] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [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: 10/31/2022]
Abstract
In order to analyze the antibiotic resistance of Salmonella enterica serovars, a total of 112 Salmonella strains were tested (54 S. enteritidis, 32 S. typhimurium, 11 S. heidelberg, 7 S. infantis, 4 S. virchow and 4 S. hadar). The bacteria were isolated from 691 samples of frozen and fresh chicken meat. Identification of microorganisms and antimicrobial sensitivity testing were undertaken by means of the automated MicroScan AutoScan 4 method (Baxter in Spain). 45.5% of 112 strains tested were susceptible to all antibiotics. The highest percentage of resistance was found to: chloramphenicol (44.6%), ampicillin (34.8%) and tetracycline (33.9%). Multiple resistance was observed in 49 strains (43.7%), whereas single resistance was seen in 12 isolates (10.7%). We found 12 different patterns of resistance in Salmonella enterica serovar enteriditis. Resistance to chloramphenicol was the most common single resistance. The most frequent patterns of multiresistant strains were ampicillin + amoxicillin/clavulanate + cefazolin + imipenem and chloramphenicol + impipenem. In this serotype, 49 isolates belonged to phagetype 4. Salmonella typhimurium showed the highest percentages of resistance to the tested drugs, with six different resistance patterns found. 25 strains out of 32 S. typhimurium isolates belonged to phagotype 120 and 13 of these showed the same resistance pattern: chloramphenicol + tetracycline + ampicillin. The high incidence of antibiotic resistant salmonellae found in chickens in our study suggests the need for public health interventions to decrease selective pressure on bacterial strains by antimicrobial agents.
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Affiliation(s)
- T Hernandez
- Preventive Medicine and Public Health Department, University of La Laguna, Tenerife, Canary Islands, Spain
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Pascual JA, Garcia C, Hernandez T, Lerma S, Lynch JM. Effectiveness of municipal waste compost and its humic fraction in suppressing Pythium ultimum. Microb Ecol 2002; 44:59-68. [PMID: 12187376 DOI: 10.1007/s00248-001-0040-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2001] [Accepted: 09/27/2001] [Indexed: 05/23/2023]
Abstract
The effect of addition of a municipal solid waste (MSW) compost and its water-soluble and humic fraction to suppress the effect of Pythium ultimum on pea plants was studied and compared with that of a chemical pesticide (metalaxyl). The biotic and abiotic characteristics of compost involved in the biocontrol effects of these materials were also evaluated. The addition into soil of whole composts and their humic fractions reduced the effect of the pathogen on pea plants, significantly reducing the number of root lesions and Pythium populations and avoiding reductions of plant growth. The greatest pathogen suppression was achieved with the chemical pesticide. However, it also caused a significant decrease in the number of nontarget bacteria and fungi and on beneficial soil microorganisms such as Trichoderma and Pseudomonas. Addition of organic amendments increased population size of nontarget and specific biocontrol microorganisms. The humic fraction showed similar results to compost. All this suggests that metalaxyl has a nonspecific effect, producing adverse effects on aspects of soil quality. This was avoided if the chemical pesticide was reduced and replaced by organic amendments such as an MSW compost or its humic fraction.
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Affiliation(s)
- J A Pascual
- Department of Soil and Water Conservation and Organic Waste Management, Centro de Edafología y Biología Aplicada del Segura, CEBAS-CSIC, P.O. Box 4195, 30080 Murcia, Spain.
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Juskiewicz J, Zdunczyk Z, Wroblewska M, Oszmianski J, Hernandez T. The response of rats to feeding with diets containing grapefruit flavonoid extract. Food Res Int 2002. [DOI: 10.1016/s0963-9969(01)00184-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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de la Cruz RA, Albillos JC, Oliver JM, Dhimes P, Hernandez T, Trapero MA. Prolapsed hyperplastic gastric polyp causing pancreatitis: case report. Abdom Imaging 2001; 26:584-6. [PMID: 11907720 DOI: 10.1007/s00261-001-0014-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
A huge hyperplastic gastric polyp prolapsed into the duodenum. The compression and obstruction of the ampulla of Vater by this polyp caused acute pancreatitis. An overview of imaging findings, general considerations about hyperplastic gastric polyps, and a review of the literature are provided.
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Affiliation(s)
- R A de la Cruz
- Department of Radiology, Fundación Hospital Alcorcón, Area de Diagnóstico por Imagen, Madrid, Spain
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29
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Hainaut P, Hernandez T, Robinson A, Rodriguez-Tome P, Flores T, Hollstein M, Harris CC, Montesano R. IARC Database of p53 gene mutations in human tumors and cell lines: updated compilation, revised formats and new visualisation tools. Nucleic Acids Res 1998; 26:205-13. [PMID: 9399837 PMCID: PMC147235 DOI: 10.1093/nar/26.1.205] [Citation(s) in RCA: 343] [Impact Index Per Article: 13.2] [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: 02/05/2023] Open
Abstract
Since 1989, about 570 different p53 mutations have been identified in more than 8000 human cancers. A database of these mutations was initiated by M. Hollstein and C. C. Harris in 1990. This database originally consisted of a list of somatic point mutations in the p 53 gene of human tumors and cell lines, compiled from the published literature and made available in a standard electronic form. The database is maintained at the International Agency for Research on Cancer (IARC) and updated versions are released twice a year (January and July). The current version (July 1997) contains records on 6800 published mutations and will surpass the 8000 mark in the January 1998 release. The database now contains information on somatic and germline mutations in a new format to facilitate data retrieval. In addition, new tools are constructed to improve data analysis, such as a Mutation Viewer Java applet developed at the European Bioinformatics Institute (EBI) to visualise the location and impact of mutations on p53 protein structure. The database is available in different electronic formats at IARC (http://www.iarc. fr/p53/homepage.htm ) or from the EBI server (http://www.ebi.ac.uk ). The IARC p53 website also provides reports on database analysis and links with other p53 sites as well as with related databases. In this report, we describe the criteria for inclusion of data, the revised format and the new visualisation tools. We also briefly discuss the relevance of p 53 mutations to clinical and biological questions.
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Affiliation(s)
- P Hainaut
- International Agency for Research on Cancer, 150 cours Albert-Thomas, 69372 Lyon Cedex 08, France.
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Dogliotti E, Hainaut P, Hernandez T, D'Errico M, DeMarini DM. Mutation spectra resulting from carcinogenic exposure: from model systems to cancer-related genes. Recent Results Cancer Res 1998; 154:97-124. [PMID: 10026995 DOI: 10.1007/978-3-642-46870-4_6] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [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: 10/28/2022]
Abstract
The events leading to cancer are complex and interactive. Alteration of cancer genes, such as the tumor suppressor gene p53, plays a central role in this process. Analysis of the frequency, type and site of mutations in important cancer-related genes may provide clues to the identification of etiological factors and sources of exposure. In this chapter we have selected a few examples of environmental human carcinogens and have attempted to use the knowledge of their mechanisms of mutagenesis, as derived from in vitro cell systems, as a key to understanding the complexity of p53 mutation spectra in tumors arising at the putative target organ. The analysis will focus on environmental exposure to UV radiation. The examples of tobacco smoke, dietary aflatoxin and vinyl chloride will be also briefly discussed.
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Affiliation(s)
- E Dogliotti
- Laboratory of Comparative Toxicology and Ecotoxicology, Rome, Italy
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31
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Castillo G, Sanz MA, Serrano MA, Hernandez T, Hernandez A. An Isocratic High-Performance Liquid Chromatographic Method for Determining the Available Lysine in Foods. J Chromatogr Sci 1997. [DOI: 10.1093/chromsci/35.9.423] [Citation(s) in RCA: 4] [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: 11/13/2022]
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32
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Hernandez T, Auśn N, Bartolomé B, Bengoechea L, Estrella I, Gómez-Cordovés C. Variations in the phenolic composition of fruit juices with different treatments. ACTA ACUST UNITED AC 1997. [DOI: 10.1007/s002170050052] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
CT and MRI findings in 35 patients with the acquired immune deficiency syndrome (AIDS) and proven intracranial tuberculosis (TB) are presented. Over 90% of the patients were intravenous drug abusers and in two-thirds TB was the first manifestation of AIDS. CT was normal in one quarter, the most frequent findings being hydrocephalus (51%) and meningeal enhancement (41%), commonly seen together (31.5%). Meningeal enhancement was seen in 48% of the CT studies with intravenous contrast medium and in 3 cases studied with MRI and i.v. gadolinium DTPA, in 2 of which CT was negative. Parenchymal involvement was found in 37% of cases; MRI was more sensitive than CT for its detection. One quarter of the patients had ischaemic lesions, mainly in the basal ganglia. We confirm the usefulness of CT and the superiority of MRI in the diagnosis of intracranial TB and in differential diagnosis from other conditions likely to be found in these patients.
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Affiliation(s)
- M F Villoria
- Department of Neuroradiology, Hospital General Gregorio Maranón, Madrid, Spain
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Coulson RA, Hernandez T. Decreased oxygen consumption after catecholamine-induced glycolysis in the alligator. Comp Biochem Physiol A Comp Physiol 1986; 84:673-6. [PMID: 2875834 DOI: 10.1016/0300-9629(86)90385-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Anaerobic glycolysis was stimulated by forcing alligators to work to exhaustion, or by injecting them with epinephrine or norepinephrine. In all three groups, plasma lactate increased to above 20 mM. In the work group, oxygen consumption increased three-fold. In the catecholamine experiments, oxygen consumption dropped almost to zero immediately and stayed at zero from 45 min to over 2 hr. Gradually oxygen consumption resumed, finally exceeding the control value, but only by 50%. It was concluded that catecholamine-induced glycolysis produced phosphate-bond energy greatly in excess of immediate need, and that this energy was stored until it was used by the tissue. No oxygen was used until the store was depleted.
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Davis D, Schwarz P, Hernandez T, Mitchell M, Warnock B, Elbein AD. Isolation and Characterization of Swainsonine from Texas Locoweed (Astragalus emoryanus). Plant Physiol 1984; 76:972-5. [PMID: 16663983 PMCID: PMC1064418 DOI: 10.1104/pp.76.4.972] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Swainsonine (1,2,8-trihydroxyoctahydroindolizine) was isolated from locoweed (Astragalus emoryanus) that grows in Texas. Using a biological assay as a measure of activity and purity, a relatively straightforward purification of the compound is described. The purified material was a potent inhibitor of jack bean alpha-mannosidase and also of glycoprotein processing. The positive ion electron impact mass spectra of this compound was identical to that of authentic swainsonine. Nuclear magnetic resonance analysis also confirmed that the material was swainsonine.
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Affiliation(s)
- D Davis
- Department of Biochemistry, The University of Texas Health Science Center, San Antonio, Texas 78284
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Hoffer PB, Neumann R, Quartararo L, Lange R, Hernandez T. Improved intrinsic resolution: does it make a difference? Concise communication. J Nucl Med 1984; 25:230-6. [PMID: 6327944] [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: 01/19/2023] Open
Abstract
The purpose of this study was to determine what effect further improvement in an Anger camera's intrinsic resolution has on lesion detection. We studied 52 patients undergoing bone imaging and 58 undergoing liver imaging. All patients had images performed in rapid sequence on ZLC -75 and ZLC -37 Anger cameras, both by Siemens. The two imaging systems are virtually identical except for the number of photomultiplier tubes and crystal thickness; these resulted in differences in intrinsic resolution ( ZLC -75 less than 3.8 mm FWHM at 140 keV, ZLC -37 less than 4.9 mm) and sensitivity ( ZLC -75 approximately 0.91 of ZLC -37 at 140 keV). Observer performance, measured by ROC curves, for detection of abnormalities was virtually identical with the two instruments. Subjectively, there was a trend toward preference of the ZLC -75 images, but this was not associated with any significant improvement in lesion detectability even in the subgroup in which a preference for one or the other instrument was noted.
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Abstract
Seventeen amino acids were fed singly to small caimans and the rates of their disappearance from the gut lumen, and of their appearance in intestinal mucosa, whole intestine, whole stomach, and plasma were determined. The results were compared with those in which massive amounts of protein were fed. When single amino acids were fed, only traces of arginine, ornithine, lysine, aspartate and asparagine were absorbed intact. Glycine, alanine and serine were absorbed rapidly reaching mucosal concentrations as high as 40 mM. The others were not concentrated as highly and most were absorbed by the mucosa more slowly than the glycine group. Protein feeding did not result in high amino acid concentrations in the mucosa. Whether amino acids were ingested as protein or in the free state, glycine, alanine and glutamine increased in the mucosa, suggesting these three incorporate nitrogen released from the others. It appeared that several transport systems operate if amino acids are given singly, and that a different more efficient transport system operates during protein digestion.
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Erdman HE, Hernandez T. Adult toxicity and dominant lethals induced by ozone at specific stages in spermatogenesis in Drosophila virilis. Environ Mutagen 1982; 4:657-66. [PMID: 7160344 DOI: 10.1002/em.2860040605] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Ozone, a highly reactive three-atom allotrope of oxygen, is formed in high concentrations in various kinds of microenvironments, including electron microscopes, office copy machines, and X-ray devices. Mutagenicity and action modus operandi of ozone suggest its radiomimetic property. In order to test for ozone-induced dominant lethals in Drosophila virilis, we determined that four-hr and longer exposures to 30 +/- 2 ppm ozone were lethal on or before day 25 postexposure. Accordingly, we used a three-hr ozone exposure to investigate dominant lethals induced at specific spermatogenic stages. Ozone increased the percentage of dominant lethals in the stages of spermatogenesis which were investigated. Under the conditions of this experiment, the sperm-sperm bundle stage showed the greatest percentage of dominant lethals induced by ozone. Meiotic cells were the least sensitive to ozone mutagenicity. The induction of dominant lethals is discussed on the basis of chemical reactions from the molecular decomposition of water by radiations and/or ozone. Alternative explanations are presented due to the definition of induced dominant lethals and to associated modifications from ozone exposure.
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Guarneros G, Montañez C, Hernandez T, Court D. Posttranscriptional control of bacteriophage lambda gene expression from a site distal to the gene. Proc Natl Acad Sci U S A 1982; 79:238-42. [PMID: 6281759 PMCID: PMC345701 DOI: 10.1073/pnas.79.2.238] [Citation(s) in RCA: 88] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The bacteriophage lambda int gene product, integrase, recombines the phage DNA with the host DNA at specific sites on each to accomplish lysogeny. The int gene is transcribed from two promoters, PL and PI, each regulated positively by lambda proteins. The expression of integrase is also controlled from a site, sib, in the b region of the phage genome. This is a unique regulatory site because it is located distal to the structural gene in relation to the promoters. The expression of int from the PL promoter is inhibited when sib is present. This effect appears to be specific for PL because sib does not cause inhibition of PI-dependent int synthesis. lambda mutants that contain alterations in the site have been isolated. Sequence analyses of the mutations reveal single base changes, spanning 37 base pairs (bp) in the b region, some 240 bp beyond the int gene. Another mutant, hef13, which has a phenotype similar to that of sib, introduces a nucleotide change within the same 37-bp region. The sib and hef mutations cluster within a region of dyad symmetry. Regulation of int synthesis by sib occurs after transcription of the int gene. There is no difference in the rate of PL-promoted int mRNA synthesis in either sib+ or sib- phage infections, yet int mRNA is less stable in the sib+ infection. Because RNase III host mutants are defective in sib regulation, processing of the PL mRNA at sib by this endoribonuclease may cause int mRNA decay and decrease int synthesis.
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Binkley S, Muller G, Hernandez T. Circadian rhythm in pineal N-acetyltransferase activity: phase shifting by light pulses (I). J Neurochem 1981; 37:798-800. [PMID: 7276958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
N-Acetyltransferase activity (NAT) in the pineal gland has a circadian rhythm which is responsive to environmental light-dark cycles. The rhythm entrains to (synchronizes with or is phased by) light-dark cycles. To assess the means by which phase resetting is accomplished, the phase response of the pineal NAT rhythm to light pulses was examined using chicks (Gallus domesticus). When 4-h light pulses were imposed on chicks at intervals over a 24-h period of darkness and the time of the next rise in NAT was determined in darkness, it was found that: (1) pulses early in the subjective dark time delayed the rise in NAT, (2) pulses late in the subjective dark time advanced the rise in NAT, and (3) pulses in the subjective light time were relatively ineffective. These results are typical of a circadian phase response curve and show that an enzyme with a circadian rhythm is similar to other circadian rhythms studied.
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Miller HI, Abraham J, Benedik M, Campbell A, Court D, Echols H, Fischer R, Galindo JM, Guarneros G, Hernandez T, Mascarenhas D, Montanez C, Schindler D, Schmeissner U, Sosa L. Regulation of the integration-excision reaction by bacteriophage lambda. Cold Spring Harb Symp Quant Biol 1981; 45 Pt 1:439-45. [PMID: 6271488 DOI: 10.1101/sqb.1981.045.01.058] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Abstract
Energy required for protein digestion, amino acid absorption and transport, and for protein synthesis in the alligator was estimated by determining oxygen consumption following feeding of single amino acids, various amino acid mixtures, fish, casein, gelatin, zein, and a gelatin hydrolysate. Results suggested a low energy requirement for protein digestion, for absorption of the released amino acids, and for amino acid transport, and a high energy requirement for protein synthesis. Little energy was needed for absorption and transport of neutral single amino acids but absorption of single ionic amino acids appeared to require energy. The alligator's metabolic rate is so low that processes requiring extra energy increased oxygen consumption as much as 300%. Peptide bond synthesis seems to have been responsible for the 3-fold increase in metabolic rate after feeding protein. Whether that phenomenon should be called "specific dynamic action" is problematical.
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Herbert JD, Coulson RA, Hernandez T, Ehrensvärd G. A carbonic anhydrase requirement for the synthesis of glutamine from pyruvate in the chameleon. Biochem Biophys Res Commun 1975; 65:1054-60. [PMID: 808224 DOI: 10.1016/s0006-291x(75)80492-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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47
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Hernandez T, Coulson RA, Herbert JD. Synthesis of renal ammonium bicarbonate from 14C labeled amino acids in crocodilia. Comp Biochem Physiol B 1973; 46:417-25. [PMID: 4757959 DOI: 10.1016/0305-0491(73)90332-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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48
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Coulson RA, Hernandez T. Reptiles as research models for comparative biochemistry and endocrinology. J Am Vet Med Assoc 1971; 159:1672-7. [PMID: 4949440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Hernandez T, Coulson RA. Free amino acids in the carcasses of various animals. Comp Biochem Physiol B 1971; 38:679-88. [PMID: 5579547 DOI: 10.1016/0305-0491(71)90270-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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