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1.
J Med Educ Curric Dev ; 10: 23821205231203967, 2023.
Article in English | MEDLINE | ID: mdl-38025031

ABSTRACT

OBJECTIVE: Food insecurity is a social determinant of health (SDOH) affecting 1 in 10 households per year in the United States and has major impacts on the course of chronic health conditions. It is beneficial to introduce screening and appropriate treatment plans to medical students. This study utilized a novel case-based learning exercise (CBLE) to assess confidence, attitudes and improvements in knowledge on recognizing and addressing food insecurity. METHODS: A CBLE focused on food insecurity was developed to be implemented in a 2-h session as part of the curriculum for all first-year medical students at the Medical University of South Carolina. The CBLE included a case for discussion, followed by an interview with a standardized patient. Students received invitations to complete pre- and post-CBLE assessment surveys. RESULTS: Completion of both pre- and post-surveys was achieved by 29% of students (48 out of 166). Knowledge around the formal definition of "food insecurity," how to recognize food insecurity versus hunger, and how to screen for food insecurity all increased significantly (P < .05). Responses relating to the association between certain chronic diseases and food insecurity did not change pre and post-CBLE. CONCLUSION: This novel CBLE was successfully implemented within a 2-h teaching session and improved knowledge on recognizing food insecurity in practice. However, additional learning exercises are likely needed to improve knowledge of the relationship between food insecurity and chronic disease states. Nonetheless, the CBLE structure provided students with multiple formats of learning and integration of skills, which shows promise and may be applicable to improve knowledge of other SDOHs.

2.
Ann Fam Med ; (21 Suppl 1)2023 01 01.
Article in English | MEDLINE | ID: mdl-36972533

ABSTRACT

Context: Breast cancer survivors have increased cardiovascular disease (CVD) risk compared to those without cancer history. CVD is the leading cause of death for breast cancer survivors. Objective: To assess current CVD risk counseling practices and risk perception in breast cancer survivors. Study design and analysis: Interviews conducted with breast cancer survivors. Analysis of categorical data by frequency and quantitative variables by mean and standard deviation. Inductive qualitative analysis performed using NVIVO. Setting: Academic Family Medicine Outpatient Practices Population studied: Breast cancer survivors with an identified primary care provider. Intervention/instrument: Interviews on CVD risk behaviors, risk perception, challenges with risk reduction, and previous history of risk counseling. Outcome measures: Self-reported history of CVD, risk perception, and risk behaviors. Results: The average age of participants (n=19) was 57 with 57% being white and 32% African American. Of interviewed women, 89.5% reported a personal history and 89.5% reported a family history of CVD. Only 52.6% had previously reported receipt of CVD counseling. Primary care providers most commonly provided the counseling (72.7%), however it was additionally provided by oncology (27.3%). Among breast cancer survivors, 31.6% perceived they were at increased CVD risk and 47.5% were unsure of their relative CVD risk compared to women their age. Factors affecting perceived CVD risk included family history, cancer treatments, cardiovascular diagnoses, and lifestyle factors. Video (78.9%) and text messaging (68.4%) were the most highly reported mechanisms through which breast cancer survivors requested to receive additional information and counseling on CVD risk and risk reduction. Commonly reported barriers to adopting risk reduction strategies (such as increasing physical activity) included time, resources, physical limitations, and competing responsibilities. Barriers specific to survivorship status include concerns for immune status during COVID, physical limitations associated with cancer treatment, and psychosocial aspects of cancer survivorship. Conclusions: These data suggest improving the frequency and content of CVD risk reduction counseling is needed. Strategies should identify the best methods for providing CVD counseling, and should address general barriers as well as unique challenges faced by cancer survivors.


Subject(s)
Breast Neoplasms , COVID-19 , Cancer Survivors , Cardiovascular Diseases , Female , Humans , Perception , Cardiovascular Diseases/epidemiology , Cardiovascular Diseases/etiology , Counseling
3.
Fam Med ; 54(4): 270-276, 2022 04.
Article in English | MEDLINE | ID: mdl-35421241

ABSTRACT

BACKGROUND AND OBJECTIVES: Burnout impacts medical students, residents, and practicing physicians. Existing research oversimplifies characteristics associated with burnout. Our study examined relationships between burnout, depressive symptoms, and evidence-based risk factors. METHODS: Our study questions were part of a larger survey conducted by the Council of Academic Family Medicine Educational Research Alliance (CERA), from May 9-23, 2020. Three emails were used to recruit a national sample of family medicine residents (n=283; questions completed via Survey Monkey). We determined descriptive statistics (frequency, means) for demographic and work environment characteristics, UCLA Loneliness Scale items, health behaviors, burnout (emotional exhaustion, depersonalization), and depressive symptoms. Multivariate data analysis included developing three logistic regression (LR) equations (emotional exhaustion, depersonalization, depressive symptoms) based on four blocks of potential risk factors (demographics, work environment characteristics, UCLA Loneliness items, and health behaviors). RESULTS: Rates of psychological distress included 33.1% emotional exhaustion, 31.1% depersonalization, and 53.0% depressive symptoms. We determined stepwise forward-entry LR models for emotional exhaustion (feel isolated OR=6.89, low quality of wellness program OR=5.91, and low companionship OR=4.82); depersonalization (feel isolated OR=5.59, low quality of wellness program OR=15.11, graduate US osteopathic medical school OR=0.329, and African American OR=7.55); and depressive symptoms (feel isolated OR=5.31, inadequate time for restful sleep OR=0.383, and no dependent children OR=2.14). CONCLUSIONS: Current findings document substantial social disconnection, substandard residency wellness programs, inadequate time for exercise, sleep, and other forms of self-care in addition to substantial levels of emotional exhaustion, depersonalization, and depressive symptoms. We explore implications for the design of future burnout prevention efforts and research.


Subject(s)
Burnout, Professional , Internship and Residency , Students, Medical , Burnout, Professional/psychology , Family Practice/education , Humans , Students, Medical/psychology , Surveys and Questionnaires
4.
J Community Health ; 47(3): 539-553, 2022 06.
Article in English | MEDLINE | ID: mdl-34817755

ABSTRACT

Community Health Worker (CHW) interventions have shown potential to reduce inequities for underserved populations. However, there is a lack of support for CHW integration in the delivery of health care. This may be of particular importance in rural areas in the Unites States where access to care remains problematic. This review aims to describe CHW interventions and their outcomes in rural populations in the US. Peer reviewed literature was searched in PubMed and PsycINFO for articles published in English from 2015 to February 2021. Title and abstract screening was performed followed by full text screening. Quality of the included studies was assessed using the Downs and Black score. A total of 26 studies met inclusion criteria. The largest proportion were pre-post program evaluation or cohort studies (46.2%). Many described CHW training (69%). Almost a third (30%) indicated the CHW was integrated within the health care team. Interventions aimed to provide health education (46%), links to community resources (27%), or both (27%). Chronic conditions were the concern for most interventions (38.5%) followed by women's health (34.6%). Nearly all studies reported positive improvement in measured outcomes. In addition, studies examining cost reported positive return on investment. This review offers a broad overview of CHW interventions in rural settings in the United States. It provides evidence that CHW can improve access to care in rural settings and may represent a cost-effective investment for the healthcare system.


Subject(s)
Community Health Workers , Rural Population , Chronic Disease , Community Health Workers/education , Female , Health Services Accessibility , Humans , United States , Vulnerable Populations
5.
Telemed J E Health ; 27(8): 851-858, 2021 08.
Article in English | MEDLINE | ID: mdl-34297907

ABSTRACT

People experiencing homelessness (PEH) encounter barriers to health care, increasing their vulnerability to illness, hospitalization, and death. Telehealth can improve access to health care, but its use in PEH has been insufficiently evaluated. Needs assessment surveys completed by clients at an urban drop-in center for PEH (n = 63) showed mental (58.7%) and physical (52.4%) health challenges were common, as was emergency department (ED) use (75.9%, n = 54). Surveys collected after in-person and telehealth clinical visits showed patient satisfaction was >90% for both visit types (n = 125, 44.0% telehealth and 56.0% in person). Without access to telehealth visits, 29.1% of patients would have gone to the ED and 38.2% would not have gotten care. Providers (n = 93, 69.6% telehealth and 30.4% in person) were more likely to agree/strongly agree they made a positive impact on patients' health through telehealth (92.2%) than in person (71.4%) (p = 0.019). Telehealth is a feasible and potentially cost-effective method to increase access to health care and reduce health outcome disparities in PEH.


Subject(s)
Health Services Accessibility , Ill-Housed Persons , Telemedicine , Emergency Service, Hospital , Humans , Patient Satisfaction
6.
J Am Board Fam Med ; 34(4): 724-731, 2021.
Article in English | MEDLINE | ID: mdl-34312265

ABSTRACT

BACKGROUND: Black men are disproportionately impacted by prostate cancer. Guidelines agree that Black men should make informed decisions about whether to engage in prostate cancer screening. YouTube is widely used among Black men and impacts understanding of health conditions. OBJECTIVES: Given that misleading online health information might be especially harmful to Black men, the objective of this study was to evaluate the quality of information regarding prostate cancer screening for Black men available on YouTube. METHODS: Four viewers watched the top 50 videos using the search term "Prostate Cancer Screening in Black Men." Videos were scored using the previously validated DISCERN quality criteria for consumer health information and the Patient Education Materials Assessment Tool (PEMAT). Results were compared based on video characteristics like presenter perceived demographics and viewer engagement metrics. RESULTS: Inter-rater reliability testing showed consistency for the PEMAT (interclass correlation coefficient [ICC] = 0.69) and DISCERN (ICC= 0.85). Few videos (16%) met the DISCERN quality threshold (54.4/80), and 28% of videos met the PEMAT threshold (10.5/15). Less than half of videos addressed racial disparities in prostate cancer. There was no difference in quality based on perceived race of the presenter (DISCERN P = .06, PEMAT P = .43). CONCLUSIONS: The overall quality of videos about prostate cancer screening in Black men is poor, including those with Black presenters. Clinicians should be aware of potential misinformation that Black patients receive from YouTube and the opportunity to improve the quality of available information about prostate cancer screening in Black men.


Subject(s)
Early Detection of Cancer , Prostatic Neoplasms , Social Media , Black People , Humans , Male , Prostate-Specific Antigen , Prostatic Neoplasms/diagnosis , Prostatic Neoplasms/ethnology , Reproducibility of Results , Social Media/standards
7.
Int J Psychiatry Med ; 56(1): 14-39, 2021 01.
Article in English | MEDLINE | ID: mdl-32726568

ABSTRACT

OBJECTIVE: Utilization of medications for opioid use disorder (MOUD) has not been widely adopted by primary care providers. This study sought to identify interprofessional barriers and facilitators for use of MOUD (specifically naltrexone and buprenorphine) among current and future primary care providers in a southeastern academic center in South Carolina. METHOD: Faculty, residents, and students within family medicine, internal medicine, and a physician assistant program participated in focus group interviews, and completed a brief survey. Survey data were analyzed quantitatively, and focus group transcripts were analyzed using a deductive qualitative content analysis, based upon the theory of planned behavior. RESULTS: Seven groups (N = 46) completed focus group interviews and surveys. Survey results indicated that general attitudes towards MOUD were positive and did not differ significantly among groups. Subjective norms around prescribing and controllability (i.e., beliefs about whether prescribing was up to them) differed between specialties and between level of training groups. Focus group themes highlighted attitudes about MOUD (e.g., "opens the flood gates" to patients with addiction) and perceived facilitators and barriers of using MOUD in primary care settings. Participants felt that although MOUD in primary care would improve access and reduce stigma for patients, prescribing requires improved provider education and an integrated system of care. CONCLUSIONS: The results of this study provide an argument for tailoring education to specifically address the barriers primary care prescribers perceive. Results promote the utilization of active, hands-on learning approaches, to ultimately promote uptake of MOUD prescribing in the primary care setting in South Carolina.


Subject(s)
Buprenorphine , Opioid-Related Disorders , Humans , Opioid-Related Disorders/drug therapy , Primary Health Care , Social Stigma , South Carolina
8.
J Cancer Surviv ; 15(5): 748-754, 2021 10.
Article in English | MEDLINE | ID: mdl-33175993

ABSTRACT

PURPOSE: The objective of the study was to examine current family medicine residency education in cancer survivorship and barriers to cancer survivorship education in the residency curriculum. METHODS: Family medicine residency program directors (n = 628) were surveyed electronically between September 2019 and November 2019 through the Council of Academic Family Medicine Educational Research Alliance (CERA) annual program directory survey. Respondents (n = 250) answered questions regarding eventual cancer survivorship curriculum in their residency program, including interest and barriers to implementation. Program characteristics were assessed using univariate and multivariate analyses. RESULTS: Only 9.2% of family medicine residency program directors reported having a cancer survivorship curriculum. Sixty-nine percent of program directors reported they would implement a cancer survivorship curriculum if one was available. The most significant barrier to implementation of a cancer survivorship curriculum was insufficient time (39.6%) followed by lack of faculty expertise (26.9%). Respondents that reported lack of faculty expertise as a barrier to implementation of cancer survivorship training were more likely be report that they would be willing to implement a cancer survivorship curriculum (p < 0.01). CONCLUSIONS: Despite the majority of primary care physicians providing care to cancer survivors, few family medicine residency programs have formal training in cancer survivorship care. There is interest in expanding family medicine residency training in cancer survivorship care among program directors. IMPLICATIONS FOR CANCER SURVIVORS: Gaining insight into the current educational curriculum and barriers to cancer survivorship training will lead to opportunities to improve residency training, and ultimately provide better care to cancer survivors in primary care settings.


Subject(s)
Internship and Residency , Neoplasms , Curriculum , Family Practice/education , Humans , Neoplasms/therapy , Surveys and Questionnaires , Survivorship
9.
J Am Board Fam Med ; 33(6): 894-902, 2020.
Article in English | MEDLINE | ID: mdl-33219068

ABSTRACT

BACKGROUND: Cardiovascular disease (CVD) is the leading cause of death among breast cancer (BC) survivors. BC survivors are at increased risk of CVD due to a higher prevalence of risk factors. Current data are limited on the cardiovascular screening practices and lipid management in this population in primary care settings. METHODS: A retrospective case control study was performed with 105 BC survivors and 210 matched controls (based on age and medical comorbidities of diabetes, hypertension, and hyperlipidemia). BC survivors were established with primary care practices within a large academic institution and had completed primary cancer treatment. Data on screening for CVD and lipid management were collected via a retrospective chart review. RESULTS: The average BC survivor was 63 years old, with 9 years since diagnosis. Compared with matched controls, BC survivors had more cholesterol screening (88% vs 70%, P < .001) and active statin prescriptions (63% vs 40%, P < .05) if indicated by the Atherosclerotic Cardiovascular Disease Calculator. There were no differences in CVD screening in White and African American BC survivors. However, African American BC survivors were more likely to have hypertension (P < .01) and have a body mass index in the overweight and obese category (P < .001) than White BC survivors. Older BC survivors were more likely to receive cholesterol screening. DISCUSSION: This study demonstrates that BC survivors who have an established primary care provider have improved cholesterol screening and statin therapy based on their risk of developing chronic diseases.


Subject(s)
Breast Neoplasms , Cancer Survivors , Cardiovascular Diseases , Breast Neoplasms/diagnosis , Breast Neoplasms/epidemiology , Cardiovascular Diseases/diagnosis , Cardiovascular Diseases/epidemiology , Cardiovascular Diseases/etiology , Case-Control Studies , Early Detection of Cancer , Female , Humans , Lipids , Retrospective Studies , Survivors
10.
Fam Pract ; 37(6): 772-778, 2020 11 28.
Article in English | MEDLINE | ID: mdl-32700730

ABSTRACT

BACKGROUND: Academic physician burnout is concerning. Too little is known about factors associated with residency programme director burnout. Continued uncertainty risks adverse outcomes including graduate medical education leadership turnover and negative impact on recruiting and retaining under-represented minority residency programme directors. OBJECTIVE: This study assessed symptoms of burnout (emotional exhaustion, depersonalization) and depression along with evidence-based individual and environmental risk factors in a U.S. sample of family medicine residency programme directors. METHODS: The omnibus 2018 Council of Academic Family Medicine Education Research Alliance survey was used to contact programme directors at all Accreditation Council for Graduate Medical Education accredited U.S. family medicine residency programmes via email. Descriptive data included programme director and programme characteristics, Areas of Worklife (workload, values and control), loneliness (lack companionship, feel left out and feel isolated), burnout (emotional exhaustion, depersonalization) and depressive symptoms. Chi-square tests contrasted descriptive variables with burnout and depressive symptoms. Logistic regression (LR) modelled associations between significant descriptive variables and burnout and depressive symptoms. RESULTS: The survey response rate was 45.2% (268/590). Programme directors reported: emotional exhaustion (25.0%), depersonalization (10.3%) and depressive symptoms (25.3%). LR models found significant associations with emotional exhaustion (Workload: lacking time and other work-related resources); lack of companionship, depersonalization (North West Central residency region; Workload and lack of companionship) and depressive symptoms (Black/African American ethnicity). CONCLUSIONS: One-quarter of U.S. programme directors report burnout or depressive symptoms. Future research should consider associated variables as possible intervention targets to reduce programme director distress and turnover.


Subject(s)
Burnout, Professional , Internship and Residency , Cross-Sectional Studies , Education, Medical, Graduate , Family Practice/education , Humans , Surveys and Questionnaires , United States
11.
J Am Coll Nutr ; 39(4): 333-337, 2020.
Article in English | MEDLINE | ID: mdl-31518212

ABSTRACT

Objective: The aim of this research was to determine the changes in medical student attitudes toward nutrition counseling after implementation of a novel curricular activity during a required third-year clerkship.Method: All third-year medical students completing their required family medicine clerkship were invited to participate in a voluntary survey composed of the Nutrition in Patient Care Survey (NIPS) and demographics before their required curricular clerkship activity consisting of two separate case-based modules focused on nutritional aspects of patient care. Students and faculty facilitators met via web platform at an assigned time to review and discuss questions. All students were invited to complete the postsurvey composed of only the NIPS.Results: Completion rate was 31% for both pre- and postsurveys. Students' intended specialty choice did not lead to a significant difference in scores on any of the five subscales on pre-intervention surveys. Almost half (43.9%) of the students who completed the surveys reported offering nutrition-related counseling despite lack of formal training. The Physician-Patient Relationship score went from 4.29 to 4.37 (p < 0.03) and the Physician Efficacy score went from 3.18 to 3.34 (p < 0.01). The was no significant difference identified pre- versus postintervention for the Clinical Behavior scales.Conclusions: The modules used in this pilot study resulted in positive changes in student attitudes toward counseling patients about nutrition. The inclusion of required case-based modules focused on nutrition is feasible and can positively impact student attitudes regarding their efficacy in counseling patients.


Subject(s)
Counseling/education , Curriculum , Family Practice/education , Nutrition Therapy/psychology , Students, Medical/psychology , Adult , Attitude , Clinical Clerkship , Female , Humans , Male , Pilot Projects , Surveys and Questionnaires
12.
Int J Neuropsychopharmacol ; 20(10): 844-854, 2017 10 01.
Article in English | MEDLINE | ID: mdl-28977525

ABSTRACT

Background: Oxytocin may be a possible treatment for multiple neuropsychiatric disorders, including cocaine addiction. Little is known about the site-specific effects of oxytocin on various drug addiction-related brain regions. Furthermore, sexually dimorphic effects of oxytocin on neural function in the addiction circuit have not been established. Here, we studied Fos expression following cocaine-cued reinstatement in both male and female rats. Methods: Male and female rats underwent self-administration, extinction, and reinstatement tests. On test days, rats were given oxytocin or vehicle, and lever pressing was measured in response to conditioned cocaine cues. Rats were perfused and Fos staining measured in the central amygdala, medial prefrontal cortex, nucleus accumbens core, and subthalamic nucleus. Fos/oxytocin double labeling occurred in the paraventricular nucleus of the hypothalamus. Results: Rats reinstated to cocaine cues relative to extinction responding and oxytocin reduced cocaine seeking. Oxytocin combined with contingent cue presentations increased Fos+ oxytocin cell bodies within the paraventricular nucleus of the hypothalamus relative to vehicle. Fos expression robustly increased in the central amygdala following oxytocin administration. Oxytocin reversed cue-induced Fos expression in the medial prefrontal cortex, nucleus accumbens core, and subthalamic nucleus. Central oxytocin infusion also attenuated reinstated cocaine seeking. Conclusions: Oxytocin decreased reinstated cocaine seeking, increased Fos activation in the paraventricular nucleus of the hypothalamus and central amygdala, but normalized cue-induced Fos activation in the medial prefrontal cortex, nucleus accumbens core, and subthalamic nucleus, thereby demonstrating regionally specific activation patterns. No sex differences were seen for the effects of oxytocin on cocaine seeking and Fos activation, indicating that oxytocin acts on similar central neural circuits critical to reinstated cocaine seeking in both males and females.


Subject(s)
Brain/drug effects , Central Nervous System Agents/pharmacology , Cocaine-Related Disorders/drug therapy , Drug-Seeking Behavior/drug effects , Oxytocin/pharmacology , Proto-Oncogene Proteins c-fos/metabolism , Animals , Brain/metabolism , Brain/pathology , Cocaine/administration & dosage , Cocaine-Related Disorders/metabolism , Cocaine-Related Disorders/pathology , Cues , Disease Models, Animal , Dopamine Uptake Inhibitors/pharmacology , Drug-Seeking Behavior/physiology , Female , Male , Neurons/drug effects , Neurons/metabolism , Neurons/pathology , Rats, Sprague-Dawley , Self Administration
13.
Pharmacol Biochem Behav ; 161: 13-21, 2017 Oct.
Article in English | MEDLINE | ID: mdl-28870523

ABSTRACT

Methamphetamine (meth) addiction is a prevalent health concern worldwide, yet remains without approved pharmacological treatments. Preclinical evidence suggests that oxytocin may decrease relapse, but the neuronal underpinnings driving this effect remain unknown. Here we investigate whether oxytocin's effect is dependent on presynaptic glutamatergic regulation in the nucleus accumbens core (NAcore) by blocking metabotropic glutamate receptors 2/3 (mGluR2/3). Male and female Sprague-Dawley rats self-administered meth or sucrose on an escalating fixed ratio, followed by extinction and cue-induced reinstatement sessions. Reinstatement tests consisted of systemic (Experiment 1) or site-specific application of the drugs into the NAcore (Experiments 2 and 3). Before reinstatement sessions, rats received LY341495, an mGluR2/3 antagonist, or its vehicle followed by a second infusion/injection of oxytocin or saline. As expected, both males and females reinstated lever pressing to meth associated cues, and LY341495 alone did not impact this behavior. Oxytocin injected systemically or infused into the NAcore decreased cued meth seeking. Importantly, combined LY341495 and oxytocin administration restored meth cued reinstatement. Interestingly, neither oxytocin nor LY341495 impacted sucrose-cued reinstatement, suggesting distinct mechanisms between meth and sucrose. These findings were consistent between males and females. Overall, we report that oxytocin reduced responding to meth-associated cues and blocking presynaptic mGluR2/3 reversed this effect. Further, oxytocin's effects were specific to meth cues as NAcore oxytocin was without an effect on sucrose cued reinstatement. Results are discussed in terms of oxytocin receptor localization in the NAcore and modulation of presynaptic regulation of glutamate in response to drug associated cues.


Subject(s)
Drug-Seeking Behavior/drug effects , Methamphetamine/administration & dosage , Nucleus Accumbens/drug effects , Oxytocin/administration & dosage , Receptors, Metabotropic Glutamate/antagonists & inhibitors , Animals , Cues , Drug-Seeking Behavior/physiology , Excitatory Amino Acid Antagonists/administration & dosage , Female , Infusions, Intraventricular , Male , Nucleus Accumbens/physiology , Rats , Rats, Sprague-Dawley , Receptors, Metabotropic Glutamate/physiology , Self Administration
14.
Physiol Behav ; 164(Pt A): 330-5, 2016 10 01.
Article in English | MEDLINE | ID: mdl-27321756

ABSTRACT

Cocaine addiction is often characterized by a rigid pattern of behavior in which cocaine users continue seeking and taking drug despite negative consequences associated with its use. As such, full acquisition and relapse of drug-seeking behavior may be attributed to a shift away from goal-directed responding and a shift towards the maladaptive formation of rigid and habit-like responses. This rigid nature of habitual responding can be developed with extended training and is typically characterized by insensitivity to changes in outcome value. The present study determined whether cocaine (primary reinforcer) and cocaine associated cues (secondary reinforcer) could be devalued in rats with different histories of cocaine self-administration. Specifically, rats were trained on two schedules of cocaine self-administration (long-access vs. short-access). Following training the cocaine reinforcer was devalued through three separate pairings of lithium chloride with cocaine infusions. Cocaine history did not have an impact on devaluation of cocaine-associated cues. However, the reinforcing properties of cocaine were devalued only in rats on a short-access cocaine schedule but not those trained on a long-access schedule. Taken together this pattern of findings suggests that, in short access rats, devaluation is specific to the primary reinforcer and not associative stimuli such as cues. Importantly, rats that received extended training during self-administration displayed insensitivity to outcome devaluation of the primary reinforcer as well as all associative stimuli, thus displaying rigid behavioral responding similar to behavioral patterns found in addiction. Alternatively, long access cocaine exposure may have altered the devaluation threshold.


Subject(s)
Cocaine-Related Disorders/psychology , Drug-Seeking Behavior , Goals , Habits , Analysis of Variance , Animals , Cocaine/administration & dosage , Disease Models, Animal , Dopamine Uptake Inhibitors/administration & dosage , Drug-Seeking Behavior/drug effects , Extinction, Psychological , Lithium Chloride/administration & dosage , Male , Rats, Sprague-Dawley , Self Administration , Time Factors
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