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Alonso IP, Pino JA, Kortagere S, Torres GE, España RA. Dopamine transporter function fluctuates across sleep/wake state: potential impact for addiction. Neuropsychopharmacology 2021; 46:699-708. [PMID: 33032296 PMCID: PMC8026992 DOI: 10.1038/s41386-020-00879-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 09/13/2020] [Accepted: 09/15/2020] [Indexed: 12/20/2022]
Abstract
The dopamine transporter (DAT) has been implicated in a variety of arousal-related processes including the regulation of motor activity, learning, motivated behavior, psychostimulant abuse, and, more recently, sleep/wake state. We previously demonstrated that DAT uptake regulates fluctuations in extracellular dopamine (DA) in the striatum across the light/dark cycle with DA levels at their highest during the dark phase and lowest during the light phase. Despite this evidence, whether fluctuations in DA uptake across the light/dark cycle are associated with changes in sleep/wake has not been tested. To address this, we employed a combination of sleep/wake recordings, fast scan cyclic voltammetry, and western blotting to examine whether sleep/wake state and/or light/dark phase impact DA terminal neurotransmission in male rats. Further, we assessed whether variations in plasma membrane DAT levels and/or phosphorylation of the threonine 53 site on the DAT accounts for fluctuations in DA neurotransmission. Given the extensive evidence indicating that psychostimulants increase DA through interactions with the DAT, we also examined to what degree the effects of cocaine at inhibiting the DAT vary across sleep/wake state. Results demonstrated a significant association between individual sleep/wake states and DA terminal neurotransmission, with higher DA uptake rate, increased phosphorylation of the DAT, and enhanced cocaine potency observed after periods of sleep. These findings suggest that sleep/wake state influences DA neurotransmission in a manner that is likely to impact a host of DA-dependent processes including a variety of neuropsychiatric disorders.
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Affiliation(s)
- I. P. Alonso
- grid.166341.70000 0001 2181 3113Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129 USA
| | - J. A. Pino
- grid.440631.40000 0001 2228 7602Departamento de Medicina, Facultad de Medicina, Universidad de Atacama, 1532502 Copiapó, Chile
| | - S. Kortagere
- grid.166341.70000 0001 2181 3113Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA 19129 USA
| | - G. E. Torres
- grid.254250.40000 0001 2264 7145Department of Molecular, Cellular & Biomedical Sciences, CUNY School of Medicine at the City College of New York, New York, NY 10031 USA
| | - R. A. España
- grid.166341.70000 0001 2181 3113Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129 USA
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Mauna JC, Harris SS, Pino JA, Edwards CM, DeChellis-Marks MR, Bassi CD, Garcia-Olivares J, Amara SG, Guajardo FG, Sotomayor-Zarate R, Terminel M, Castañeda E, Vergara M, Baust T, Thiels E, Torres GE. G protein βγ subunits play a critical role in the actions of amphetamine. Transl Psychiatry 2019; 9:81. [PMID: 30745563 PMCID: PMC6370791 DOI: 10.1038/s41398-019-0387-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 10/30/2018] [Accepted: 01/01/2019] [Indexed: 11/18/2022] Open
Abstract
Abnormal levels of dopamine (DA) are thought to contribute to several neurological and psychiatric disorders including drug addiction. Extracellular DA levels are regulated primarily via reuptake by the DA transporter (DAT). Amphetamine, a potent psychostimulant, increases extracellular DA by inducing efflux through DAT. Recently, we discovered that G protein βγ subunits (Gβγ) interact with DAT, and that in vitro activation of Gβγ promotes DAT-mediated efflux. Here, we investigated the role of Gβγ in the actions of amphetamine in DA neurons in culture, ex vivo nucleus accumbens (NAc), and freely moving rats. Activation of Gβγ with the peptide myr-Ser-Ile-Arg-Lys-Ala-Leu-Asn-Ile-Leu-Gly-Tyr-Pro-Asp-Tyr-Asp (mSIRK) in the NAc potentiated amphetamine-induced hyperlocomotion, but not cocaine-induced hyperlocomotion, and systemic or intra-accumbal administration of the Gβγ inhibitor gallein attenuated amphetamine-induced, but not cocaine-induced hyperlocomotion. Infusion into the NAc of a TAT-fused peptide that targets the Gβγ-binding site on DAT (TAT-DATct1) also attenuated amphetamine-induced but not cocaine-induced hyperlocomotion. In DA neurons in culture, inhibition of Gβγ with gallein or blockade of the Gβγ-DAT interaction with the TAT-DATct1 peptide decreased amphetamine-induced DA efflux. Furthermore, activation of Gβγ with mSIRK potentiated and inhibition of Gβγ with gallein reduced amphetamine-induced increases of extracellular DA in the NAc in vitro and in freely moving rats. Finally, systemic or intra-accumbal inhibition of Gβγ with gallein blocked the development of amphetamine-induced, but not cocaine-induced place preference. Collectively, these results suggest that interaction between Gβγ and DAT plays a critical role in the actions of amphetamine and presents a novel target for modulating the actions of amphetamine in vivo.
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Affiliation(s)
- J. C. Mauna
- 0000 0004 1936 9000grid.21925.3dDepartment of Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - S. S. Harris
- 0000 0004 1936 8091grid.15276.37Department of Pharmacology and Therapeutics, University of Florida College of Medicine, Gainesville, FL USA
| | - J. A. Pino
- 0000 0004 1936 8091grid.15276.37Department of Pharmacology and Therapeutics, University of Florida College of Medicine, Gainesville, FL USA
| | - C. M. Edwards
- 0000 0004 1936 9000grid.21925.3dDepartment of Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - M. R. DeChellis-Marks
- 0000 0004 1936 9000grid.21925.3dDepartment of Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - C. D. Bassi
- 0000 0004 1936 9000grid.21925.3dDepartment of Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - J. Garcia-Olivares
- 0000 0001 2297 5165grid.94365.3dLaboratory of Cellular and Molecular Neurobiology, National Institute of Mental Health, NIH, Bethesda, MD USA
| | - S. G. Amara
- 0000 0001 2297 5165grid.94365.3dLaboratory of Cellular and Molecular Neurobiology, National Institute of Mental Health, NIH, Bethesda, MD USA
| | - F. G. Guajardo
- 0000 0004 1936 8091grid.15276.37Department of Pharmacology and Therapeutics, University of Florida College of Medicine, Gainesville, FL USA ,0000 0000 8912 4050grid.412185.bLaboratory of Neurochemistry and Neuropharmacology, Center for Neurobiology and Brain Plasticity, Universidad de Valparaíso, Valparaíso, Chile
| | - R. Sotomayor-Zarate
- 0000 0000 8912 4050grid.412185.bLaboratory of Neurochemistry and Neuropharmacology, Center for Neurobiology and Brain Plasticity, Universidad de Valparaíso, Valparaíso, Chile
| | - M. Terminel
- 0000 0001 0668 0420grid.267324.6Department of Psychology, University of Texas at El Paso, El Paso, TX USA
| | - E. Castañeda
- 0000 0001 0668 0420grid.267324.6Department of Psychology, University of Texas at El Paso, El Paso, TX USA
| | - M. Vergara
- 0000 0004 1936 8091grid.15276.37Department of Pharmacology and Therapeutics, University of Florida College of Medicine, Gainesville, FL USA
| | - T. Baust
- 0000 0004 1936 9000grid.21925.3dDepartment of Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - E. Thiels
- 0000 0004 1936 9000grid.21925.3dDepartment of Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - G. E. Torres
- 0000 0004 1936 8091grid.15276.37Department of Pharmacology and Therapeutics, University of Florida College of Medicine, Gainesville, FL USA ,0000 0004 1936 8091grid.15276.37Center for Addiction Research and Education, University of Florida College of Medicine, Gainesville, FL USA
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Pino JA, Winterhalter P, Gök R, González J. Characterisation of aroma-active compounds in commercial aged rums. Acta Alimentaria 2017. [DOI: 10.1556/066.2017.46.1.9] [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] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Reddy IA, Pino JA, Weikop P, Osses N, Sørensen G, Bering T, Valle C, Bluett RJ, Erreger K, Wortwein G, Reyes JG, Graham D, Stanwood GD, Hackett TA, Patel S, Fink-Jensen A, Torres GE, Galli A. Glucagon-like peptide 1 receptor activation regulates cocaine actions and dopamine homeostasis in the lateral septum by decreasing arachidonic acid levels. Transl Psychiatry 2016; 6:e809. [PMID: 27187231 PMCID: PMC5070047 DOI: 10.1038/tp.2016.86] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 02/19/2016] [Accepted: 03/30/2016] [Indexed: 12/12/2022] Open
Abstract
Agonism of the glucagon-like peptide 1 (GLP-1) receptor (GLP-1R) has been effective at treating aspects of addictive behavior for a number of abused substances, including cocaine. However, the molecular mechanisms and brain circuits underlying the therapeutic effects of GLP-1R signaling on cocaine actions remain elusive. Recent evidence has revealed that endogenous signaling at the GLP-1R within the forebrain lateral septum (LS) acts to reduce cocaine-induced locomotion and cocaine conditioned place preference, both considered dopamine (DA)-associated behaviors. DA terminals project from the ventral tegmental area to the LS and express the DA transporter (DAT). Cocaine acts by altering DA bioavailability by targeting the DAT. Therefore, GLP-1R signaling might exert effects on DAT to account for its regulation of cocaine-induced behaviors. We show that the GLP-1R is highly expressed within the LS. GLP-1, in LS slices, significantly enhances DAT surface expression and DAT function. Exenatide (Ex-4), a long-lasting synthetic analog of GLP-1 abolished cocaine-induced elevation of DA. Interestingly, acute administration of Ex-4 reduces septal expression of the retrograde messenger 2-arachidonylglycerol (2-AG), as well as a product of its presynaptic degradation, arachidonic acid (AA). Notably, AA reduces septal DAT function pointing to AA as a novel regulator of central DA homeostasis. We further show that AA oxidation product γ-ketoaldehyde (γ-KA) forms adducts with the DAT and reduces DAT plasma membrane expression and function. These results support a mechanism in which postsynaptic septal GLP-1R activation regulates 2-AG levels to alter presynaptic DA homeostasis and cocaine actions through AA.
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Affiliation(s)
- I A Reddy
- Neuroscience Program, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - J A Pino
- Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
- Department of Pharmacology and Therapeutics, College of Medicine, University of Florida, Gainesville, FL, USA
| | - P Weikop
- Laboratory of Neuropsychiatry, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
- Psychiatric Centre Copenhagen, University Hospital Copenhagen, Copenhagen, Denmark
| | - N Osses
- Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - G Sørensen
- Laboratory of Neuropsychiatry, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
- Psychiatric Centre Copenhagen, University Hospital Copenhagen, Copenhagen, Denmark
| | - T Bering
- Laboratory of Neuropsychiatry, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - C Valle
- Departamento de Ciencias Básicas, Universidad de Viña del Mar, Viña del Mar, Chile
| | - R J Bluett
- Neuroscience Program, Vanderbilt University School of Medicine, Nashville, TN, USA
- Department of Psychiatry, Vanderbilt University Medical Center, Nashville, TN, USA
| | - K Erreger
- Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - G Wortwein
- Laboratory of Neuropsychiatry, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - J G Reyes
- Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - D Graham
- Department of Biomedical Sciences and Center for Brain Repair, Florida State University, Tallahassee, FL, USA
| | - G D Stanwood
- Department of Biomedical Sciences and Center for Brain Repair, Florida State University, Tallahassee, FL, USA
| | - T A Hackett
- Neuroscience Program, Vanderbilt University School of Medicine, Nashville, TN, USA
- Department of Hearing and Speech Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
| | - S Patel
- Department of Psychiatry, Vanderbilt University Medical Center, Nashville, TN, USA
| | - A Fink-Jensen
- Laboratory of Neuropsychiatry, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
- Psychiatric Centre Copenhagen, University Hospital Copenhagen, Copenhagen, Denmark
| | - G E Torres
- Department of Pharmacology and Therapeutics, College of Medicine, University of Florida, Gainesville, FL, USA
| | - A Galli
- Neuroscience Program, Vanderbilt University School of Medicine, Nashville, TN, USA
- Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, Nashville, TN, USA
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Beltrán TF, Basallote MG, Fernández-Trujillo MJ, Pino JA, Corao C, Llusar R, Sokolov M, Vicent C. Structure elucidation and aqueous speciation of water-soluble M3S 4M= (Mo,W) clusters bearing hydroxypropyl diphosphine ligands. Acta Crystallogr A 2011. [DOI: 10.1107/s010876731108175x] [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: 11/10/2022] Open
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Rodríguez-Burbano D, Quijano-Celis CE, Pino JA. Composition of the Essential Oil from Leaves ofAstronium graveolensJacq Grown in Colombia. Journal of Essential Oil Research 2010. [DOI: 10.1080/10412905.2010.9700379] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Nuñez-Arévalo L, Moreno-Murillo B, Quijano-Celis CE, Pino JA. Composition of the Essential Oil from Leaves ofCroton bogotanusCuatrec Grown in Colombia. Journal of Essential Oil Research 2010. [DOI: 10.1080/10412905.2010.9700378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Peralta-Bohórquezo AF, Parada F, Quijano CE, Pino JA. Analysis of Volatile Compounds of Sour Guava (Psidium guineenseSwartz) Fruit. Journal of Essential Oil Research 2010. [DOI: 10.1080/10412905.2010.9700381] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Aguero J, Lora J, Estrada K, Concepcion F, Nunez A, Rodriguez A, Pino JA. Volatile Components of a Commercial Sample of the Blue-Green AlgaeSpirulina platensis. Journal of Essential Oil Research 2003. [DOI: 10.1080/10412905.2003.9712085] [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: 10/28/2022]
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Abstract
Volatile compounds were isolated from strawberry guava fruit by simultaneous steam distillation-solvent extraction according to Likens-Nickerson. Compounds were identified by capillary GC-MS and sensorially characterized by sniffing GC. Two hundred and four compounds were identified in the aroma concentrate, of which ethanol, alpha-pinene, (Z)-3-hexenol, (E)-beta-caryophyllene, and hexadecanoic acid were found to be the major constituents. The presence of many aliphatic esters and terpenic compounds is thought to contribute to the unique flavor of the strawberry guava fruit.
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Affiliation(s)
- J A Pino
- Food Industry Research Institute, Carretera del Guatao km 3 1/2, La Habana 19200, Cuba
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Abstract
Volatile components were isolated from acerola fruit by simultaneous steam distillation-solvent extraction according to the Likens-Nickerson method and analyzed by GC and GC-MS methods. One hundred fifty constituents were identified in the aroma concentrate, from which furfural, hexadecanoic acid, 3-methyl-3-butenol, and limonene were found to be the major constituents. The amounts of esters, 3-methyl-3-butenol, and their various esters were thought to contribute to the unique flavor of the acerola fruit.
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Affiliation(s)
- J A Pino
- Food Industry Research Institute, Carretera del Guatao km 3 1/2, C. Habana 19200, Cuba
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Pino JA, Fuentes V, Correa MT. Volatile constituents of Chinese chive (Allium tuberosum Rottl. ex Sprengel) and rakkyo (Allium chinense G. Don). J Agric Food Chem 2001; 49:1328-1330. [PMID: 11312859 DOI: 10.1021/jf9907034] [Citation(s) in RCA: 30] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Volatile components were isolated from Chinese chive and rakkyo by simultaneous steam distillation-solvent extraction and analyzed by GC and GC-MS. Sulfur compounds account for 88 and 94% of the total volatiles in the isolated extract of Chinese chive and rakkyo, respectively. In addition to the sulfur compounds commonly reported in the genus Allium, 27 novel volatile sulfur-containing components were found in the isolated extracts of both species. Among them were a sulfide, disulfides, trisulfides, and tetrasulfides with ethyl, butyl, and pentyl groups.
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Affiliation(s)
- J A Pino
- Food Industry Research Institute, Carretera del Guatao km 3(1)/(2), C. Havana 19200, Cuba
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Jankowski LB, Budowle B, Swec NT, Pino JA, Freck-Tootell S, Corey HW, Schwartz R, LaRue EJ, Rochin WL, Kearney CJ, Tarver ML. New Jersey Caucasian, African American, and Hispanic population data on the PCR-based loci HLA-DQA1, LDLR, GYPA, HBGG, D7S8, and Gc. J Forensic Sci 1998; 43:1037-40. [PMID: 9729821] [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: 02/08/2023]
Abstract
New Jersey Caucasian, African American, and Hispanic genotype and allele frequencies were determined for the six PCR-based loci, HLA-DQA1, LDLR, GYPA, HBGG, D7S8, and Gc. All but one locus (HLA-DQA1 for African Americans) meet Hardy-Weinberg expectations. However, observing one departure in 18 loci over the three New Jersey sample populations is not unexpected. There is little evidence for departures from independence between pairs of loci in the three populations studied. Thus, multiple locus profile frequencies can be determined using the product rule.
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Affiliation(s)
- L B Jankowski
- New Jersey State Police South Regional Laboratory, Hammonton 08037, USA
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Budowle B, Jankowski LB, Corey HW, Swec NT, Freck-Tootell S, Pino JA, Schwartz R, Kelley CA, Tarver ML. Evaluation of independence assumptions for PCR-based and protein-based genetic markers in New Jersey Caucasians. J Forensic Sci 1997; 42:223-5. [PMID: 9068180] [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: 02/03/2023]
Abstract
Allele frequencies for six PCR-based loci and three protein-based (i.e., enzyme systems) loci were determined in a Caucasian sample population from New Jersey. The loci are LDLR, GYPA, HBGG, D7S8, Gc, HLA-DQA1, PGM1, ESD, and EAP. All loci meet Hardy-Weinberg expectations. In addition, there is little evidence for association of alleles among the nine loci. The allelic frequency data generally are similar to another Caucasian population database.
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Affiliation(s)
- B Budowle
- Forensic Science Research and Training Center, FBI Academy, Quantico, Virginia 22135, USA
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Bashein G, Pino JA, Nessly ML, Kenny MA, Davis KB, Hornbein TF, Ivey TD. Clinical assessment of a flow-through fluorometric blood gas monitor. J Clin Monit Comput 1988; 4:195-203. [PMID: 3264851 DOI: 10.1007/bf01621816] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [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: 01/05/2023]
Abstract
We performed an observational study to evaluate a flow-through fluorometric instrument (Gas-STAT) that continuously measures the carbon dioxide tension (PCO2), oxygen tension (PO2), and pH of blood in the cardiopulmonary bypass circuit. Setup and calibration of the instrument typically required 20 minutes. During bypass, 129 blood samples were drawn from 16 patients for comparison with conventional measurements obtained with a blood gas machine. Data for each variable, within each sensor, were analyzed by linear regression. The ranges of the standard errors of the estimate were 0.7 to 4.2 mm Hg for PCO2, 18.3 to 78.7 mm Hg for the high PO2 range, 1.4 to 7.1 mm Hg for the low PO2 range, and 0.008 to 0.049 for pH. The regression lines differed from the identity line (P less than 0.05) in at least one variable in most patients, and large deviations from the line of identity in both slope and intercept were common. Among 58 sensors evaluated, failures occurred in 5 (2.9%) of the 174 optodes, and minor leakage occurred in 2 (3.4%) of the flow-through cells. We conclude that although this flow-through fluorometric instrument is an adequate monitor of trends in blood gases during cardiopulmonary bypass, it is not accurate enough to supplant conventional laboratory measurements.
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Affiliation(s)
- G Bashein
- Department of Anesthesiology, University of Washington School of Medicine, Seattle 98195
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Abstract
The Gas-STAT blood gas monitor uses fluorometric techniques to continuously monitor blood gas tensions and acid-base status in the extracorporeal perfusion circuit during cardiac surgery. We evaluated the in vitro performance of this instrument by using a tonometry loop to simulate the clinical environment and to provide controlled gas tensions and pH in the circulating fluid. In this article we report the in vitro study in which 35 Gas-STAT blood gas sensors were used to assess the precision, stability, response time, and specificity of the instrument and to confirm the sterile integrity of its flow-through cells. The blood gas monitor exhibited precision values for pH, carbon dioxide tension (PCO2), and oxygen tension (PO2) of 0.1%, 1.3%, and 1.0%, respectively; stabilities were 0.002 units/h for pH, 0.5 mm Hg/h for PCO2, and 1.4 mm Hg/h for PO2; time constants (tau, a response to within 1/e of a new gas tension, approximately 63%) were 81 seconds for PCO2 and 72 seconds for PO2. No significant interference was detected in in vitro tests of 30 drugs and metabolites typically encountered during cardiac surgery. Bacterial challenge of the flow-through cell membranes showed that they provide an effective barrier isolating the sensors from contaminants in the fluid path. Our quality control consisted of measurement of a midrange gas standard as an unknown immediately following sensor calibration; this simple program is proposed as a complement to the manufacturer's operating procedures.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- J A Pino
- Department of Laboratory Medicine, University of Washington School of Medicine, Seattle 98195
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Pino JA, McMurry JE, Jurs PC, Lavine BK, Harper AM. Application of pyrolysis/gas chromatography/pattern recognition to the detection of cystic fibrosis heterozygotes. Anal Chem 1985; 57:295-302. [PMID: 3985338 DOI: 10.1021/ac00279a067] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Pino JA, Pittman CS, Kennedy PL. Hyperthyroidism. Arch Intern Med 1983; 143:1280, 1282. [PMID: 6860062 DOI: 10.1001/archinte.143.6.1280] [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: 01/22/2023]
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Vargas JR, Pino JA, Murad TM, Diethelm AG, Jander P, Byron DH. Paraganglioma resembling pheochromocytoma. South Med J 1982; 75:863-6. [PMID: 6283674 DOI: 10.1097/00007611-198207000-00025] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Shieh SD, Hirsch SR, Boshell BR, Pino JA, Alexander LJ, Witten DM, Friedman EA. Low risk of contrast media-induced acute renal failure in nonazotemic type 2 diabetes mellitus. Kidney Int 1982; 21:739-43. [PMID: 7109460 DOI: 10.1038/ki.1982.91] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The risk of developing contrast media-induced acute renal failure was studied in 49 randomly selected nonazotemic type 2 adult diabetic patients subjected to IVU. There were 19 men and 30 women in the group whose mean age was 62 +/- 10 years (range, 38 to 82 years). In preparation for IVU, patients were neither dehydrated nor given a laxative. The IVU was performed in the morning, using sodium diatrizoate and meglumine diatrizoate. Serum creatinine levels were measured pre-IVU and on days 1, 3, and 6 after the IVU. A total of three patients (6%) had an elevation of serum creatinine greater than 25% above the baseline by post-IVU day 3. One patient developed oliguria (less than 400 ml/24 hr) that lasted 2 days. Creatinine clearances of the three patients showing contrast media toxicity were 74, 60, and 105 ml/min pre-IVU. In each of the three patients, a return to pre-IVU serum creatinine concentration was noted within 2 weeks. It is concluded that the risk of acute renal failure post-IVU is small in hydrated nonazotemic type 2 diabetic patients.
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Vargas JR, Pino JA, Murad TM. Craniopharyngioma in two siblings. JAMA 1981; 246:1807-8. [PMID: 7277671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Pino JA. Action programs required to increase world livestock production. J Am Vet Med Assoc 1968; 153:1855-8. [PMID: 5749713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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