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Huerta Sanchez LL, Lanz M, Doan H, Li T, Szumlinski K. Sucrose reinforcement effects following inhibition of AMPA and NMDA‐type glutamate receptors in the ventromedial prefrontal cortex. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.r2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - Hoa Doan
- University of CaliforniaSanta BarbaraCA
| | - Taylor Li
- University of CaliforniaSanta BarbaraCA
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Huerta Sanchez LL, Sankaran M, Li TL, Doan H, Chiu A, Shulman E, Shab G, Kippin TE, Szumlinski KK. Profiling prefrontal cortex protein expression in rats exhibiting an incubation of cocaine craving following short-access self-administration procedures. Front Psychiatry 2022; 13:1031585. [PMID: 36684008 PMCID: PMC9846226 DOI: 10.3389/fpsyt.2022.1031585] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 11/25/2022] [Indexed: 01/05/2023] Open
Abstract
INTRODUCTION Incubation of drug-craving refers to a time-dependent increase in drug cue-elicited craving that occurs during protracted withdrawal. Historically, rat models of incubated cocaine craving employed extended-access (typically 6 h/day) intravenous drug self-administration (IV-SA) procedures, although incubated cocaine craving is reported to occur following shorter-access IV-SA paradigms. The notoriously low-throughput of extended-access IV-SA prompted us to determine whether two different short-access IV-SA procedures akin to those in the literature result in qualitatively similar changes in glutamate receptor expression and the activation of downstream signaling molecules within prefrontal cortex (PFC) subregions as those reported previously by our group under 6h-access conditions. METHODS For this, adult, male Sprague-Dawley rats were trained to intravenously self-administer cocaine for 2 h/day for 10 consecutive days (2-h model) or for 6 h on day 1 and 2 h/day for the remaining 9 days of training (Mixed model). A sham control group was also included that did not self-administer cocaine. RESULTS On withdrawal day 3 or 30, rats were subjected to a 2-h test of cue-reinforced responding in the absence of cocaine and a time-dependent increase in drug-seeking was observed under both IV-SA procedures. Immunoblotting of brain tissue collected immediately following the cue test session indicated elevated phospho-Akt1, phospho-CaMKII and Homer2a/b expression within the prelimbic subregion of the PFC of cocaine-incubated rats. However, we failed to detect incubation-related changes in Group 1 metabotropic glutamate receptor or ionotropic glutamate receptor subunit expression in either subregion. DISCUSSION These results highlight further a role for Akt1-related signaling within the prelimbic cortex in driving incubated cocaine craving, and provide novel evidence supporting a potential role also for CaMKII-dependent signaling through glutamate receptors in this behavioral phenomenon.
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Affiliation(s)
- Laura L Huerta Sanchez
- Department of Psychological and Brain Sciences, University of California, Santa Barbara, Santa Barbara, CA, United States
| | - Mathangi Sankaran
- Department of Psychological and Brain Sciences, University of California, Santa Barbara, Santa Barbara, CA, United States
| | - Taylor L Li
- Department of Psychological and Brain Sciences, University of California, Santa Barbara, Santa Barbara, CA, United States
| | - Hoa Doan
- Department of Psychological and Brain Sciences, University of California, Santa Barbara, Santa Barbara, CA, United States
| | - Alvin Chiu
- Department of Psychological and Brain Sciences, University of California, Santa Barbara, Santa Barbara, CA, United States
| | - Eleanora Shulman
- Department of Psychological and Brain Sciences, University of California, Santa Barbara, Santa Barbara, CA, United States
| | - Gabriella Shab
- Department of Psychological and Brain Sciences, University of California, Santa Barbara, Santa Barbara, CA, United States
| | - Tod E Kippin
- Department of Psychological and Brain Sciences, University of California, Santa Barbara, Santa Barbara, CA, United States.,Department of Molecular, Cellular and Developmental Biology, University of California, Santa Barbara, Santa Barbara, CA, United States.,Neuroscience Research Institute, University of California, Santa Barbara, Santa Barbara, CA, United States
| | - Karen K Szumlinski
- Department of Psychological and Brain Sciences, University of California, Santa Barbara, Santa Barbara, CA, United States.,Department of Molecular, Cellular and Developmental Biology, University of California, Santa Barbara, Santa Barbara, CA, United States.,Neuroscience Research Institute, University of California, Santa Barbara, Santa Barbara, CA, United States
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Wu J, Limmer A, Doan H, Simonette R, Rady P, Tyring S. 120 The novel AKT inhibitor afuresertib inhibits Merkel cell carcinoma through targeting TSC-mTOR and GSK-3 pathways. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.196] [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: 11/24/2022]
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Requena S, Doan H, Raut S, D'Achille A, Gryczynski Z, Gryczynski I, Strzhemechny YM. Linear dichroism and optical anisotropy of silver nanoprisms in polymer films. Nanotechnology 2016; 27:325704. [PMID: 27348419 DOI: 10.1088/0957-4484/27/32/325704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We present optical studies of two different size distributions of silver triangular nanoprisms, one with a dipole resonance at 520 nm and the other with a dipole resonance at 650 nm, placed in different media. Significant wavelength-dependent depolarization of scattered light from the silver nanoprisms suspended in water indicates strong interference of multiple surface plasmon resonant modes in the same particle. We use this depolarization as a probe of light scattering by the nanoprisms in a lipid solution due to the rejection of a polarized background scattering. Also, the silver nanoprisms were embedded in a polyvinyl alcohol polymer matrix and oriented by stretching the polymer/nanoprism nanocomposite films. We observe significantly increased linear dichroism in the region associated with the plasmonic in-plane dipole mode upon stretching. Additionally, there is a weaker linear dichroism in the region associated with out-of-plane modes, which vanish in the extinction spectrum of the stretched nanocomposite film.
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Affiliation(s)
- S Requena
- Department of Physics & Astronomy, Texas Christian University, TCU Sid Richardson Building, TCU Box 298840, Fort Worth, TX 76129, USA
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Kumar A, Doan H, Barnes M, Chapman JC, Kookana RS. Response and recovery of acetylcholinesterase activity in freshwater shrimp, Paratya australiensis (Decapoda: Atyidae) exposed to selected anti-cholinesterase insecticides. Ecotoxicol Environ Saf 2010; 73:1503-1510. [PMID: 20701973 DOI: 10.1016/j.ecoenv.2010.07.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2009] [Revised: 07/09/2010] [Accepted: 07/13/2010] [Indexed: 05/29/2023]
Abstract
The toxicity of carbaryl, chlorpyrifos, dimethoate and profenofos to the freshwater shrimp, Paratya australiensis was assessed by measuring acetylcholinesterase (AChE) inhibition after 96h exposures. Shrimp exposed to these pesticides exhibited significant AChE inhibition, with mortality in shrimp corresponding to 70-90% AChE inhibition. The sensitivity of P. australiensis to the four pesticides based on AChE inhibition can be given as chlorpyrifos > profenofos > carbaryl > dimethoate. Recovery of AChE activity was followed in shrimp after 96 h exposures to carbaryl, chlorpyrifos and dimethoate. Recovery after exposure to the carbamate pesticide carbaryl was more rapid than for the two organophosphorus pesticides, chlorpyrifos and dimethoate. The slow recovery of depressed AChE activity may mean that affected organisms in the natural system are unable to sustain physical activities such as searching for food or eluding predators. To investigate the ecological significance of AChE inhibition, chemotaxis behaviour was assessed in shrimp exposed to profenofos for 24h. Abnormal chemotaxis behaviour in the exposed shrimp was observed at concentrations representing 30-50% AChE inhibition. A clear relationship existed between the depression of AChE activity and observed chemotaxis responses, such as approaching and grasping the chemoattractant source. These results suggest that in vivo toxicity tests based on this specific biomarker are sensitive and present advantages over conventional acute tests based on mortality. Behavioural studies of test organisms conducted in conjunction with measurement of AChE inhibition will provide data to clarify the toxic effects caused by sublethal chemical concentrations of anti-cholinesterase compounds.
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Affiliation(s)
- A Kumar
- Centre for Environmental Contaminants Research, CSIRO Land and Water, PMB 2, Urrbrae 5064, SA, Australia.
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Assaad B, Kakaji H, Quinn T, Molteni A, Wang W, Xie L, Vasques D, Ouyang P, Doan H, Herndon B. 8 ADIPOSITY AND INSULIN GROWTH FACTOR-DEPENDENT SIGNALING IN TPA-INDUCED MOUSE MODELS. J Investig Med 2006. [DOI: 10.2310/6650.2005.x0015.7] [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: 11/18/2022]
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Assaad B, Kakaji H, Quinn T, Molteni A, Wang W, Xie L, Vasques D, Ouyang P, Doan H, Herndon B. Adiposity and Insulin Growth Factor-Dependent Signaling in Tpa-Induced Mouse Models. J Investig Med 2006. [DOI: 10.1177/108155890605402s08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- B. Assaad
- University of Missouri-Kansas City School of Medicine, Kansas City, MO
| | - H. Kakaji
- University of Missouri-Kansas City School of Medicine, Kansas City, MO
| | - T. Quinn
- University of Missouri-Kansas City School of Medicine, Kansas City, MO
| | - A. Molteni
- University of Missouri-Kansas City School of Medicine, Kansas City, MO
| | - W. Wang
- Kansas State University, Manhattan, KS
| | - L. Xie
- Kansas State University, Manhattan, KS
| | | | - P. Ouyang
- Kansas State University, Manhattan, KS
| | - H. Doan
- Kansas State University, Manhattan, KS
| | - B. Herndon
- University of Missouri-Kansas City School of Medicine, Kansas City, MO
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Whitkus R, Doan H, Lowrey TK. Genetics of adaptive radiation in Hawaiian species of Tetramolopium (Asteraceae). III. Evolutionary genetics of sex expression. Heredity (Edinb) 2000; 85 ( Pt 1):37-42. [PMID: 10971689 DOI: 10.1046/j.1365-2540.2000.00722.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [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: 11/20/2022] Open
Abstract
Despite numerous studies of speciation on oceanic islands, few insights exist on the genetic changes involved in the origin and diversification of island taxa. Here we report a genetic analysis of the evolutionary change in sex expression in Hawaiian Tetramolopium. The most diverse clade in the genus is characterized by a monoecious breeding system. The breeding system resulted from a change in sex expression in disc florets from the ancestral hermaphroditic condition to the derived male state. Analysis of an F2 population from a cross between the two forms of sex expression indicates two regions of the Tetramolopium linkage map are associated with the loss of female function in disc florets. Quantitative trait locus mapping of the two linkage groups confirms that two loci control 56% of the phenotypic variation of the trait in the F2 population. Additive and dominance effects are apparent but no statistical evidence of epistasis was found. Several related reproductive traits also have few genetic associations on the linkage map, but are generally distinct from the control of sex expression. Although modifier loci are likely to be involved, the apparent simple genetic change underlying sex expression parallels a major evolutionary diversification in Hawaiian Tetramolopium and may have initiated the divergence of this novel clade.
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Affiliation(s)
- R Whitkus
- Department of Biology, Sonoma State University, Rohnert Park, CA 94928, USA.
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Abstract
Eighteen 3-day-old human neonates were shown a 12 by 12 black-white checkerboard target for 45-sec. trials with either a 10-, 20-, or 30-sec. intertrial interval until their visual fixation time decreased to a set criterion for habituation. On subsequent recovery trials, a 2 by 2 black-white checkerboard target received significantly longer fixations from boys in the 10-sec. and girls in the 20-sec. conditions. 30-sec. intervals, however, produced little habituation and recovery. The implications of these findings are discussed.
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Kreider BQ, Corey-Bloom J, Lisak RP, Doan H, Pleasure DE. Stimulation of mitosis of cultured rat Schwann cells isolated by differential adhesion. Brain Res 1982; 237:238-43. [PMID: 7074358 DOI: 10.1016/0006-8993(82)90573-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Roy RN, Gibbons JJ, Padron JL, Buechter K, Faszholz S, Doan H. Revised values of the paH of monosodium 1,4-piperazinediethanesulfonate ("Pipes') in water and other buffers in isotonic saline at various temperatures. Clin Chem 1981. [DOI: 10.1093/clinchem/27.10.1787] [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]
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Roy RN, Gibbons JJ, Padron JL, Buechter K, Faszholz S, Doan H. Revised values of the paH of monosodium 1,4-piperazinediethanesulfonate ("Pipes') in water and other buffers in isotonic saline at various temperatures. Clin Chem 1981; 27:1787-8. [PMID: 6269781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Kreider BQ, Messing A, Doan H, Kim SU, Lisak RP, Pleasure DE. Enrichment of Schwann cell cultures from neonatal rat sciatic nerve by differential adhesion. Brain Res 1981; 207:433-44. [PMID: 7008901 DOI: 10.1016/0006-8993(81)90375-9] [Citation(s) in RCA: 100] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A novel method of Schwann cell purification from neonatal rat sciatic nerve has been developed using differential adhesion. After enzymatic and mechanical dissociation, the cell digest is allowed to settle on polylysine-coated glass coverslips for 30 min with intermittent shaking. After an 18-h incubation, bipolar cells comprise greater than 95% of the non-adherent population. Indirect immunofluorescence with the cell-specific markers rabbit anti-galactocerebroside and rabbit anti-bovine-P-2 basic protein antiserum confirmed light microscopic identification of these bipolar cells as Schwann cells. Rabbit anti-human fibronectin specifically labeled fibroblasts which comprised less than 5% of the cell population, but did not bind to Schwann cells. Schwann cells isolated by differential adhesion were injected into a rabbit. When absorbed with cultured rat skin fibroblasts, serum from this rabbit specifically surface labeled greater than 99% of the bipolar and round cells after 18 h and 5 days in vitro and also labeled Schwann cells in fetal rat dorsal root ganglia cultures, but not fibroblasts or neurons.
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