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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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2
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Hernandez T, Fallar R, Polydorides AD. Outcomes of Remote Pathology Instruction in Student Performance and Course Evaluation. Acad Pathol 2021; 8:23742895211061822. [PMID: 34926798 PMCID: PMC8679015 DOI: 10.1177/23742895211061822] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 07/23/2021] [Revised: 10/22/2021] [Accepted: 10/31/2021] [Indexed: 11/17/2022] Open
Abstract
The coronavirus disease 2019 (COVID-19) pandemic has disrupted undergraduate
medical education, including preclinical class-based courses, by requiring
social distancing and essentially eliminating in-person teaching. The aim of
this study was to compare student performance and satisfaction before and after
implementation of remote instruction in a first-year introductory pathology
course. Assessments (3 quizzes, 1 practical exam, and 1 final) were compared
between courses given before (January 2020) and during (January 2021) the
COVID-19 pandemic, in terms of mean scores, degree of difficulty, and item
discrimination, both overall and across different question types. Students’
evaluations of the course (Likert scale-based) were also compared between the 2
years. Significantly higher mean scores were observed during remote instruction
(compared to the prior, in-person year) on verbatim-repeated questions (94.9 ±
8.8 vs 89.4 ± 12.2; P = .002) and on questions incorporating a
gross specimen image (88.4 ± 7.5 vs 84.4 ± 10.3; P = .007). The
percentage of questions that were determined to be moderate/hard in degree of
difficulty and good/very good in item discrimination remained similar between
the 2 time periods. In the practical examination, students performed
significantly better during remote instruction on questions without specimen
images (96.5 ± 7.0 vs 91.2 ± 15.2; P = .004). Finally, course
evaluation metrics improved, with students giving a higher mean rating value in
each measured end point of course quality during the year of remote instruction.
In conclusion, student performance and course satisfaction generally improved
with remote instruction, suggesting that the changes implemented, and their
consequences, should perhaps inform future curriculum improvements.
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Affiliation(s)
- Tahyna Hernandez
- Department of Pathology, Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Robert Fallar
- Department of Medical Education, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Alexandros D. Polydorides
- Department of Pathology, Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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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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Bryce C, Grimes Z, Pujadas E, Ahuja S, Beasley MB, Albrecht R, Hernandez T, Stock A, Zhao Z, AlRasheed MR, Chen J, Li L, Wang D, Corben A, Haines GK, Westra WH, Umphlett M, Gordon RE, Reidy J, Petersen B, Salem F, Fiel MI, El Jamal SM, Tsankova NM, Houldsworth J, Mussa Z, Veremis B, Sordillo E, Gitman MR, Nowak M, Brody R, Harpaz N, Merad M, Gnjatic S, Liu WC, Schotsaert M, Miorin L, Aydillo Gomez TA, Ramos-Lopez I, Garcia-Sastre A, Donnelly R, Seigler P, Keys C, Cameron J, Moultrie I, Washington KL, Treatman J, Sebra R, Jhang J, Firpo A, Lednicky J, Paniz-Mondolfi A, Cordon-Cardo C, Fowkes ME. Pathophysiology of SARS-CoV-2: the Mount Sinai COVID-19 autopsy experience. Mod Pathol 2021; 34:1456-1467. [PMID: 33795830 PMCID: PMC8015313 DOI: 10.1038/s41379-021-00793-y] [Citation(s) in RCA: 151] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 03/01/2021] [Accepted: 03/02/2021] [Indexed: 02/07/2023]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its associated clinical syndrome COVID-19 are causing overwhelming morbidity and mortality around the globe and disproportionately affected New York City between March and May 2020. Here, we report on the first 100 COVID-19-positive autopsies performed at the Mount Sinai Hospital in New York City. Autopsies revealed large pulmonary emboli in six cases. Diffuse alveolar damage was present in over 90% of cases. We also report microthrombi in multiple organ systems including the brain, as well as hemophagocytosis. We additionally provide electron microscopic evidence of the presence of the virus in our samples. Laboratory results of our COVID-19 cohort disclose elevated inflammatory markers, abnormal coagulation values, and elevated cytokines IL-6, IL-8, and TNFα. Our autopsy series of COVID-19-positive patients reveals that this disease, often conceptualized as a primarily respiratory viral illness, has widespread effects in the body including hypercoagulability, a hyperinflammatory state, and endothelial dysfunction. Targeting of these multisystemic pathways could lead to new treatment avenues as well as combination therapies against SARS-CoV-2 infection.
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Affiliation(s)
- Clare Bryce
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Zachary Grimes
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Sadhna Ahuja
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Randy Albrecht
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Aryeh Stock
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Zhen Zhao
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Joyce Chen
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Li Li
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Diane Wang
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Adriana Corben
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | | | | | | | - Jason Reidy
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Bruce Petersen
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Fadi Salem
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | | | | | | | - Zarmeen Mussa
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | | | | | - Michael Nowak
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Rachel Brody
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Noam Harpaz
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Miriam Merad
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Sacha Gnjatic
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Wen-Chun Liu
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Lisa Miorin
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | | | | | - Ryan Donnelly
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Calvin Keys
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | | | | | | | - Robert Sebra
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jeffrey Jhang
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Adolfo Firpo
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | | | | | - Mary E Fowkes
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Hernandez T, Magid MS, Polydorides AD. Assessment Question Characteristics Predict Medical Student Performance in General Pathology. Arch Pathol Lab Med 2021; 145:1280-1288. [PMID: 33450752 DOI: 10.5858/arpa.2020-0624-oa] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2020] [Indexed: 11/06/2022]
Abstract
CONTEXT.— Evaluation of medical curricula includes appraisal of student assessments in order to encourage deeper learning approaches. General pathology is our institution's 4-week, first-year course covering universal disease concepts (inflammation, neoplasia, etc). OBJECTIVE.— To compare types of assessment questions and determine which characteristics may predict student scores, degree of difficulty, and item discrimination. DESIGN.— Item-level analysis was employed to categorize questions along the following variables: type (multiple choice question or matching answer), presence of clinical vignette (if so, whether simple or complex), presence of specimen image, information depth (simple recall or interpretation), knowledge density (first or second order), Bloom taxonomy level (1-3), and, for the final, subject familiarity (repeated concept and, if so, whether verbatim). RESULTS.— Assessments comprised 3 quizzes and 1 final exam (total 125 questions), scored during a 3-year period (total 417 students) for a total 52 125 graded attempts. Overall, 44 890 attempts (86.1%) were correct. In multivariate analysis, question type emerged as the most significant predictor of student performance, degree of difficulty, and item discrimination, with multiple choice questions being significantly associated with lower mean scores (P = .004) and higher degree of difficulty (P = .02), but also, paradoxically, poorer discrimination (P = .002). The presence of a specimen image was significantly associated with better discrimination (P = .04), and questions requiring data interpretation (versus simple recall) were significantly associated with lower mean scores (P = .003) and a higher degree of difficulty (P = .046). CONCLUSIONS.— Assessments in medical education should comprise combinations of questions with various characteristics in order to encourage better student performance, but also obtain optimal degrees of difficulty and levels of item discrimination.
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Affiliation(s)
- Tahyna Hernandez
- From the Department of Pathology, Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York (Hernandez, Polydorides)
| | - Margret S Magid
- the Department of Pathology, New York University Grossman School of Medicine, New York, New York (Magid)
| | - Alexandros D Polydorides
- From the Department of Pathology, Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York (Hernandez, Polydorides)
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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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Rooper LM, Windon MJ, Hernandez T, Miles B, Ha PK, Ryan WR, Van Zante A, Eisele DW, D’Souza G, Fakhry C, Westra WH. HPV-positive Squamous Cell Carcinoma of the Larynx, Oral Cavity, and Hypopharynx: Clinicopathologic Characterization With Recognition of a Novel Warty Variant. Am J Surg Pathol 2020; 44:691-702. [PMID: 31934915 PMCID: PMC7885126 DOI: 10.1097/pas.0000000000001433] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Human papillomavirus (HPV) is a principal driver for most oropharyngeal squamous cell carcinomas (OPSCCs), where it is strongly associated with improved survival. HPV is much less frequently detected in squamous cell carcinomas arising in nonoropharyngeal sites (non-OPSCCs), and its pathogenic role and prognostic value in these tumors is unclear. We evaluated the clinicopathologic features of 52 non-OPSCCs considered HPV-positive based upon p16 immunohistochemistry and direct HPV detection using RNA in situ hybridization (ISH), DNA ISH, or real-time DNA polymerase chain reaction. The HPV-positive non-OPSCCs were from the larynx (n=27), oral cavity (n=21), and hypopharynx (n=4). While most cases (n=34, 65%) showed classic histologic features of HPV-positive OPSCC, including endophytic growth, minimal keratinization, and hyperchromatic nuclei without koilocytic changes, a subset (n=13, 25%) were characterized by exophytic growth, exuberant surface hyperkeratosis and parakeratosis, marked nuclear pleomorphism, and prominent koilocytic atypia. These antithetical features were highly reminiscent of the warty variant of HPV-positive squamous cell carcinoma described in anogenital sites. Compared with tumors without warty features, the warty tumors presented at lower stage and were not associated with lymph node metastasis, local recurrence, or distant spread (4 y disease-free survival of 100% vs. 66%, P=0.069). The presence of transcriptionally active HPV as detected by RNA ISH suggests a pathogenic role for HPV in these nonoropharyngeal sites. While most HPV-positive non-OPSCCs are morphologically similar to their tonsillar counterparts, this study highlights a previously unrecognized warty variant that may be associated with a highly favorable clinical outcome.
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Affiliation(s)
- Lisa M. Rooper
- Department of Pathology, The Johns Hopkins University School of Medicine
- Department of Oncology, The Johns Hopkins University School of Medicine
| | - Melina J. Windon
- Department of Otolaryngology, The Johns Hopkins University School of Medicine
| | - Tahyna Hernandez
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Brett Miles
- Department of Otolaryngology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Patrick K. Ha
- Department of Otolaryngology, University of California at San Francisco, San Francisco, CA
| | - William R. Ryan
- Department of Otolaryngology, University of California at San Francisco, San Francisco, CA
| | - Annemieke Van Zante
- Department of Pathology, University of California at San Francisco, San Francisco, CA
| | - David W. Eisele
- Department of Oncology, The Johns Hopkins University School of Medicine
- Department of Otolaryngology, The Johns Hopkins University School of Medicine
| | - Gypsyamber D’Souza
- Department of Otolaryngology, The Johns Hopkins University School of Medicine
- Department of Epidemiology, The Johns Hopkins University School of Public Health, Baltimore, MD
| | - Carole Fakhry
- Department of Oncology, The Johns Hopkins University School of Medicine
- Department of Otolaryngology, The Johns Hopkins University School of Medicine
| | - William H. Westra
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, NY
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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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11
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Pu H, Hernandez T, Sadeghi J, Cervia JS. Systematic review of cognitive behavior therapy to improve mental health of women living with HIV. J Investig Med 2019; 68:30-36. [PMID: 31177091 DOI: 10.1136/jim-2019-000996] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/13/2019] [Indexed: 11/04/2022]
Abstract
Psychological distress is highly prevalent in people living with HIV. Cognitive behavior therapy (CBT) has been associated with improved mental health outcomes in HIV-infected men who have sex with men (MSM); however, little is known of its effect in women living with HIV/AIDS (WLHA). We review current literature on CBT and its effects on depression, anxiety, stress and mental health quality of life (QOL) in WLHA. We undertook a systematic review of the literature indexed in PubMed, Medline, Psychiatry Online and ScienceDirect. Of the 273 relevant studies discovered, 158 contained duplicate data, and 105 studies did not meet the inclusion and exclusion criteria, yielding 10 studies for analysis. Data were independently extracted by each researcher, with differences resolved through discussion and consensus. For WLHA, CBT substantially improved QOL, symptoms of depression and stress, but appeared to have less impact on anxiety. Three of the six studies measuring depression outcomes showed statistically significant decreases in depression. Three of three studies measuring mental health QOL, and three of three studies measuring stress also demonstrated statistically significant improvement. Two of two studies measuring anxiety did not show statistically significant change. CBT is a promising therapy for WLHA. CBT may reduce psychological distress, improving symptoms of depression, stress and QOL. There is a need for additional, better standardized studies that examine CBT for WLHA.
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Affiliation(s)
- Helen Pu
- Medicine and Pediatrics, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, New York, USA
| | - Tahyna Hernandez
- Medicine and Pediatrics, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, New York, USA
| | - John Sadeghi
- Medicine and Pediatrics, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, New York, USA
| | - Joseph Steven Cervia
- Medicine and Pediatrics, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, New York, USA.,Health Care Partners IPA & MSO, Garden City, New York, USA
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12
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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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14
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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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15
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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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17
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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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18
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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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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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20
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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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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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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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25
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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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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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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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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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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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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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