Comparing different strategies to reduce hepatocellular damage in obese common marmosets (Callithrix jacchus).

BACKGROUND: Obesity in common marmosets (Callithrix jacchus) can lead to various liver pathologies. In other species, reduced caloric intake and weight loss improve prognosis, and, often, hepatoprotectants are used to halt or reverse hepatocellular damage from fat deposition in the liver. There are no published therapies for reducing hepatocellular damage in obese marmosets. METHODS: Fifteen obese marmosets were used to evaluate the ability of caloric restriction and pharmacologic therapy (S-adenosylmethionine + milk thistle extract, or SMT), alone and combined, to reduce elevated liver enzymes. Body weight and serum chemistries were measured every 4 weeks for 6 months. RESULTS: Across treatment groups, there was a significant reduction in liver enzymes ALT and AST over time. SMT alone significantly reduced liver enzymes ALT and AST at 6 months from baseline. CONCLUSIONS: Caloric restriction and SMT, alone and combined, are effective at reducing liver enzyme levels in obese marmosets.

Operant Training for Highly Palatable Food Alters Translating Messenger RNA in Nucleus Accumbens D2 Neurons and Reveals a Modulatory Role of Ncdn.

BACKGROUND: Highly palatable food triggers behavioral responses including strong motivation. These effects involve the reward system and dopamine neurons, which modulate neurons in the nucleus accumbens (NAc). The molecular mechanisms underlying the long-lasting effects of highly palatable food on feeding behavior are poorly understood. METHODS: We studied the effects of 2-week operant conditioning of mice with standard or isocaloric highly palatable food. We investigated the behavioral responses and dendritic spine modifications in the NAc. We compared the translating messenger RNA in NAc neurons identified by the type of dopamine receptors they express, depending on the kind of food and training. We tested the consequences of invalidation of an abundant downregulated gene, Ncdn. RESULTS: Operant conditioning for highly palatable food increased motivation for food even in well-fed mice. In wild-type mice, free choice between regular and highly palatable food increased weight compared with access to regular food only. Highly palatable food increased spine density in the NAc. In animals trained for highly palatable food, translating messenger RNAs were modified in NAc neurons expressing dopamine D2 receptors, mostly corresponding to striatal projection neurons, but not in neurons expressing D1 receptors. Knockout of Ncdn, an abundant downregulated gene, opposed the conditioning-induced changes in satiety-sensitive feeding behavior and apparent motivation for highly palatable food, suggesting that downregulation may be a compensatory mechanism. CONCLUSIONS: Our results emphasize the importance of messenger RNA alterations in D2 striatal projection neurons in the NAc in the behavioral consequences of highly palatable food conditioning and suggest a modulatory contribution of Ncdn downregulation.

Hickman Catheter Use for Long-Term Vascular Access in a Preclinical Swine Model.

Central venous catheters (CVCs) are invaluable devices in large animal research as they facilitate a wide range of medical applications, including blood monitoring and reliable intravenous fluid and drug administration. Specifically, the tunneled multi-lumen Hickman catheter (HC) is commonly used in swine models due to its lower extrication and complication rates. Despite fewer complications relative to other CVCs, HC-related morbidity presents a significant challenge, as it can significantly delay or otherwise negatively impact ongoing studies. The proper insertion and maintenance of HCs is paramount in preventing these complications, but there is no consensus on best practices. The purpose of this protocol is to comprehensively describe an approach for the insertion and maintenance of a tunneled HC in swine that mitigates HC-related complications and morbidity. The use of these techniques in >100 swine has resulted in complication-free patent lines up to 8 months and no catheter-related mortality or infection of the ventral surgical site. This protocol offers a method to optimize the lifespan of the HC and guidance for approaching issues during use.

Operant training for highly palatable food alters translating mRNA in nucleus accumbens D2 neurons and reveals a modulatory role of Neurochondrin.

BACKGROUND: Highly palatable food triggers behavioral alterations reminiscent of those induced by addictive drugs. These effects involve the reward system and dopamine neurons, which modulate neurons in the nucleus accumbens (NAc). The molecular mechanisms underlying the effects of highly palatable food on feeding behavior are poorly understood. METHODS: We studied the effects of 2-week operant conditioning of mice with standard or isocaloric highly palatable food. We investigated the behavioral effects and dendritic spine modifications in the NAc. We compared the translating mRNA in NAc neurons identified by the type of dopamine receptors they express, depending on the type of food and training. We tested the consequences of invalidation of an abundant downregulated gene, Ncdn (Neurochondrin). RESULTS: Operant conditioning for highly palatable food increases motivation for food even in well-fed mice. In control mice, free access to regular or highly palatable food results in increased weight as compared to regular food only. Highly palatable food increases spine density in the NAc. In animals trained for highly palatable food, translating mRNAs are modified in NAc dopamine D2-receptor-expressing neurons, mostly corresponding to striatal projection neurons, but not in those expressing D1-receptors. Knock-out of Ncdn, an abundant down-regulated gene, opposes the conditioning-induced changes in satiety-sensitive feeding behavior and apparent motivation for highly palatable food, suggesting down-regulation may be a compensatory mechanism. CONCLUSIONS: Our results emphasize the importance of mRNA alterations D2 striatal projection neurons in the NAc in the behavioral consequences of highly palatable food conditioning and suggest a modulatory contribution of Ncdn downregulation.

Interprofessional team based learning to enhance behavioral health care for Latinx patients: Results of a teleconsultation program.

Culturally sensitive behavioral health services are scarce, particularly in rural and underserved areas. To expand integrated behavioral health care training for providers, specifically those working in rural communities and federally qualified health centers, an interprofessional teleconsultation program was developed. Given the desire to focus on culturally informed care training, this was done in partnership with a nonprofit community mental health agency which focuses on behavioral health within Latinx populations. The teleconsultation sessions were provided bimonthly using Zoom and included didactic components and case-based discussion using the Multidimensional Ecosystemic Comparative Approach (MECA; Falicov, 1995; Falicov, 2017). Participants represented a diverse, interprofessional group composed of behavioral health professionals (45.2%), primary care physicians (26.8%), family medicine residents (15.3%), and others (medical students and administrative staff [12.7%]). The program evaluation demonstrates that participants valued the teleconsultation sessions and articulated specific skills that they subsequently planned to integrate into their clinical practice to enhance care. This teleconsultation model allows interprofessional training across multiple types of organizations to enhance knowledge in providing integrated behavioral health care for Latinx populations. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Geriatric Care in the Community Setting: Welcome to Medicare and Annual Wellness Visits.

By 2030, 1 in 5 Americans will be older than 65 years, and the health care system will need to prioritize disease prevention in these patients to help them maintain their health. The Welcome to Medicare visit and Annual Wellness Visits (AWVs) were established to provide the opportunity for clinicians to screen older adult patients for geriatric conditions, review and implement preventive health recommendations, and create an individualized plan for health promotion for the next 5 to 10 years. Any patient enrolled in Medicare Part B is eligible for these visits. They focus on assessment of medical risks, drug use, lifestyle and health habits, functional status, cognitive status, mobility, mental health, and end-of-life planning. The main difference between these types of visits is that AWVs include a formal Health Risk Assessment to guide further screening and evaluation. To perform these visits efficiently, medical team staff members must understand what is required, adequate time must be allocated, and different team members should perform different parts of the evaluation. In addition to increasing the rates at which older adult patients receive recommended preventive care, these visits can generate revenue for practices if the required elements are performed, documented, and billed correctly.

Advanced Geriatrics Evaluation Skills.

BACKGROUND AND OBJECTIVES: Older adults are the fastest growing subset of the population and residency training in the basic concepts of care to the older adult is limited. We created a 1-day interactive training program, Advanced Geriatric Evaluation Skills (AGES), to upskill first-year primary care residents in the care of older adults. METHODS: An interprofessional faculty team developed and taught the IRB-approved course to a convenience sample of family medicine and internal medicine interns in 2017, 2018, and 2019. Topics addressed common geriatric presentations seen in the outpatient setting. The faculty provided useful tips and hints for successful workup, diagnosis, and treatment. RESULTS: Over the 3 years, 56 of the 135 (41%) first-year primary care residents participated. Residents reported that the course was well organized, relevant, and well taught, and they appreciated the dedicated time to focus on caring for older adults. During 2019, residents completed a pre- and posttest with 25 multiple-choice questions. The average score on the pretest was 76% and the average on the posttest was 88%. Ninety percent of the residents improved their score from the pre- to the posttest. CONCLUSIONS: The development of an AGES program provided a structured geriatric didactic curriculum for primary care residents. The course was well received by the residents, was reported to be relevant and timely, and resulted in increased knowledge in the care of older adults in the outpatient setting.

Content Analysis of Family Medicine Resident Peer Observations.

BACKGROUND AND OBJECTIVES: Direct observation is a critical part of assessing learners' achievement of the Accreditation Council for Graduate Medical Education (ACGME) Milestones and subcompetencies. Little research exists identifying the content of peer feedback among residents; this study explored the content of residents' peer assessments as they relate to ACGME Milestone subcompetencies in a family medicine residency program. METHODS: Using content from a mobile app-based observation tool (M3App), we examined resident peer observations recorded between June 2014 and November 2017, tabulating frequency of observation for each ACGME subcompetency and calculating the proportion of observations categorized under each subcompetency, as well as for each postgraduate year (PGY) class. We also coded each observation on three separate dimensions: "positive," "constructive," and "actionable." We used the χ2 test for independence, and estimated odds ratios and 95% confidence intervals for two-by-two comparisons to compare numbers of observations within each category. RESULTS: Our data include 886 peer observations made by 54 individual residents. The most frequently observed competencies were in patient care, communication, and professionalism (56%, 47%, and 38% of observations, respectively). Practice-based learning and improvement was observed least frequently (16% of observations). On average, 97.25% of the observations were positive, 85% were actionable, and 6% were constructive. CONCLUSIONS: When asked to review their peers, residents provide comments that are primarily positive and actionable. In addition, residents tend to provide more feedback on certain subcompetencies compared to others, suggesting that programs may rely on peer feedback for specific subcompetencies. Peers can provide perspective on the behaviors and skills of fellow residents.

Vitamin D Supplementation for Extraskeletal Indications in Older Persons.

Low levels of vitamin D have been implicated in a wide variety of conditions highly prevalent in the geriatric population, including fractures, functional limitations, cancer, cardiovascular disease, and depression. Vitamin D supplementation is often considered integral to the prevention of falls and fractures in the setting of osteoporosis. For other conditions, however, consensus is lacking, and the clinician may struggle to balance competing recommendations around screening, supplementation, and monitoring. This review seeks to provide an overview of the available evidence on the use of vitamin D supplementation to ameliorate sarcopenia, enhance cognition, treat depression, prevent cancer, and reduce mortality-outcomes that are common concerns in the geriatric population for which the merits of treatment are not always certain. Evidence suggests vitamin D supplementation may decrease mortality. Therefore, it may be reasonable to prescribe routine supplementation with oral cholecalciferol 800 to 1000 IU daily to all patients aged ≥65 years who do not have a contraindication. No screening or monitoring would be recommended for this population. We additionally recommend the use of oral cholecalciferol over ergocalciferol for any routine supplementation as this benefit was only observed with cholecalciferol. For patients with depression or cognitive disorders, we recommend screening for vitamin D deficiency, treating with oral cholecalciferol if present, and monitoring periodically to target a level of >30 ng/mL as an adjunct to usual care. The level of evidence certainly would not justify the use of vitamin D in place of more evidence-based therapies, but given the burden of these conditions in the geriatric population, we believe the potential benefit justifies the minimal risk.

Examining the utilisation and usefulness of social support for mothers with young children with autism spectrum disorder.

BACKGROUND: Social support has been described as a vital resource for families with children with disability. Although the benefits of social support have been described, little is known about the utilisation patterns in families of young children with autism spectrum disorder (ASD). METHOD: In a community sample of 78 American families with children (2-6 years) with ASD, this study examined the utilisation and usefulness of social support. Child, family, and service variables related to social support were explored. RESULTS: Mothers of children with ASD reported using a combination of formal and informal supports, and these were perceived to be helpful. Sociodemographic variables, child behaviour problems, satisfaction with the autism diagnostic process, and access to information about ASD predicted social support utilisation. CONCLUSION: Social support utilisation varies as a function of different child, family, and service variables. Understanding these variables may help professionals guide families in access to and use of social support.

The Relationship between Central Auditory Processing, Language, and Cognition in Children Being Evaluated for Central Auditory Processing Disorder.

BACKGROUND: Pediatric central auditory processing disorder (CAPD) is frequently comorbid with other childhood disorders. However, few studies have examined the relationship between commonly used CAPD, language, and cognition tests within the same sample. PURPOSE: The present study examined the relationship between diagnostic CAPD tests and "gold standard" measures of language and cognitive ability, the Clinical Evaluation of Language Fundamentals (CELF) and the Wechsler Intelligence Scale for Children (WISC). RESEARCH DESIGN: A retrospective study. STUDY SAMPLE: Twenty-seven patients referred for CAPD testing who scored average or better on the CELF and low average or better on the WISC were initially included. Seven children who scored below the CELF and/or WISC inclusion criteria were then added to the dataset for a second analysis, yielding a sample size of 34. DATA COLLECTION AND ANALYSIS: Participants were administered a CAPD battery that included at least the following three CAPD tests: Frequency Patterns (FP), Dichotic Digits (DD), and Competing Sentences (CS). In addition, they were administered the CELF and WISC. Relationships between scores on CAPD, language (CELF), and cognition (WISC) tests were examined using correlation analysis. RESULTS: DD and FP showed significant correlations with Full Scale Intelligence Quotient, and the DD left ear and the DD interaural difference measures both showed significant correlations with working memory. However, ∼80% or more of the variance in these CAPD tests was unexplained by language and cognition measures. Language and cognition measures were more strongly correlated with each other than were the CAPD tests with any CELF or WISC scale. Additional correlations with the CAPD tests were revealed when patients who scored in the mild-moderate deficit range on the CELF and/or in the borderline low intellectual functioning range on the WISC were included in the analysis. CONCLUSIONS: While both the DD and FP tests showed significant correlations with one or more cognition measures, the majority of the variance in these CAPD measures went unexplained by cognition. Unlike DD and FP, the CS test was not correlated with cognition. Additionally, language measures were not significantly correlated with any of the CAPD tests. Our findings emphasize that the outcomes and interpretation of results vary as a function of the subject inclusion criteria that are applied for the CELF and WISC. Including participants with poorer cognition and/or language scores increased the number of significant correlations observed. For this reason, it is important that studies investigating the relationship between CAPD and other domains or disorders report the specific inclusion criteria used for all tests.

Evaluation and Management of the Nursing Home Resident With Respiratory Symptoms and an Equivocal Chest X-Ray Report.

OBJECTIVES: Pneumonia is a leading cause of morbidity and mortality in nursing home (NH) residents. Chest x-ray evidence is considered a key diagnostic criterion for pneumonia by the Infectious Disease Society of America (IDSA) diagnostic guidelines, the modified McGeer diagnostic criteria, and the Loeb criteria for initiating antibiotics; however, x-ray interpretation is often equivocal. We conducted chart audits of patients in NHs who had chest x-rays for new respiratory symptoms to determine the degree of ambiguity in the radiology reports and their relationship to antibiotic prescription decisions. DESIGN: Cross-sectional study. SETTING: Thirty-one NHs in North Carolina. PARTICIPANTS: Two hundred twenty-six NH residents who had a chest x-ray. METHODS: Medical charts were abstracted to record (1) the patient's clinical presentation when a chest x-ray was ordered, (2) the verbatim report of the chest x-ray, and (3) the patient's course during the subsequent 7 days. To standardize the radiologist reports, a seven-category coding system was developed, which was further aggregated into three groups based on the radiologist's description of the likelihood of pneumonia. RESULTS: Of the 226 chest x-rays, 118 (52%) identified a very low likelihood of pneumonia, 67 (30%) indicated that pneumonia was present or highly likely, and the remaining 41 (18%) used a variety of terms to describe uncertainty regarding the presence of pneumonia. NH medical providers tended to treat ambiguous chest x-ray reports similarly to positive x-ray reports, prescribing antibiotic therapy to 71% of patients with ambiguous reports and 78% of positive reports. Also notable is that 40 (34%) of the 118 patients with a very low likelihood of pneumonia based on chest x-ray results were prescribed antibiotics, the majority of whom failed to meet criteria for a clinical diagnosis of pneumonia or chronic obstructive pulmonary disease exacerbation. CONCLUSION: The moderate rate of ambiguous x-ray interpretations in NH residents is likely a combination of the poor quality of portable x-rays, a high prevalence of chronic lung conditions, and conservative (ie, cautious) decision making by radiologists whose interpretation is based on little clinical information and a suboptimal quality film. As a result, data suggest that chest x-rays obtained in NHs may unnecessarily encourage antibiotic prescribing because a majority of readings are ambiguous or show a low likelihood of pneumonia, yet more than half of the patients are still treated. From an antibiotic stewardship standpoint, the apparent solution is to more closely rely on clinical signs and symptoms for diagnosis of pneumonia and to place less emphasis on the role of the chest x-ray given the high number of unclear readings.

Conditional immortalization of primary adipocyte precursor cells.

The production of new adipocytes requires the differentiation of adipocyte precursor (AP) cells residing within the adipose tissue stromal-vascular compartment. The objective was to obtain an immortalized primary adipogenic cell line derived from FACS isolated committed APs using the conditional expression of SV40 T antigen. Adipocyte precursors were isolated from white adipose tissue (WAT) using FACS to remove non-adipogenic cell populations from mice expressing a conditionally regulated SV40 T antigen. APs were maintained by continuous culture and induced to undergo adipogenic differentiation. Adipogenesis, determined by Oil Red O staining, was assessed with each passage and compared to wildtype controls. Adipogenic capability was rapidly lost with increased passage number in committed APs with concurrent reduction in cell proliferation and expression of essential late adipogenic genes, including Pparγ and C/ebpα. Thus, FACS purified committed APs have limited capability to undergo expansion and subsequent adipogenic differentiation in vitro even if they are immortalized with the SV40 T antigen.

Characteristics of Pediatric Performance on a Test Battery Commonly Used in the Diagnosis of Central Auditory Processing Disorder.

BACKGROUND: Although central auditory processing disorder (CAPD) test battery performance has been examined in adults with neurologic lesions of the central auditory nervous system (CANS), similar data on children being referred for CAPD evaluations are sparse. PURPOSE: This study characterizes CAPD test battery performance in children using tests commonly administered to diagnose the disorder. Specifically, this study describes failure rates for various test combinations, relationships between CAPD tests used in the battery, and the influence of cognitive function on CAPD test performance and CAPD diagnosis. A comparison is also made between the performance of children with CAPD and data from patients with neurologic lesions of the CANS. RESEARCH DESIGN: A retrospective study. STUDY SAMPLE: Fifty-six pediatric patients were referred for CAPD testing. DATA COLLECTION AND ANALYSIS: Participants were administered four CAPD tests, including frequency patterns (FP), low-pass filtered speech (LPFS), dichotic digits (DD), and competing sentences (CS). In addition, they were given the Wechsler Intelligence Scale for Children (WISC). Descriptive analyses examined the failure rates of various test combinations, as well as how often children with CAPD failed certain combinations when compared with adults with CANS lesions. A principal components analysis was performed to examine interrelationships between tests. Correlations and regressions were conducted to determine the relationship between CAPD test performance and the WISC. RESULTS: Results showed that the FP and LPFS tests were most commonly failed by children with CAPD. Two-test combinations that included one or both of these two tests and excluded DD tended to be failed more often. Including the DD and CS test in a battery benefited specificity. Tests thought to measure interhemispheric transfer tended to be correlated. Compared with adult patients with neurologic lesions, children with CAPD tended to fail LPFS more frequently and DD less frequently. Both groups failed FP with relatively equal frequency. CONCLUSIONS: The two-test combination that showed the highest failure rate for children with CAPD was LPFS-FP. Comparison with adults with CANS lesions, however, suggests that the mechanisms underlying LPFS performance in children need to be better understood. The two-test combination that showed the next highest failure rates among children with CAPD and did not include LPFS was CS-FP. If it is desirable to use a dichotic measure that has a lower linguistic load than CS then DD can be substituted for CS despite the slightly lower failure rate of the DD-FP battery.

Preschool Children with and without Developmental Delay: Risk, Parenting, and Child Demandingess.

Although past literature has established relations between early child risk factors, negative parenting, and problematic child behavior, the nature of these interrelations and pathways of influence over time remains largely unknown, especially in children with developmental delays or disabilities. In the current study data were drawn from the longitudinal Collaborative Family Study and included a sample of 260 families with preschool children with and without developmental delays. Child-related risk was assessed at child age 36 months, maternal intrusiveness and negative affect at 48 months, and child demandingness at 60 months. Results indicated significant relations between early risk, negative parenting, and subsequent child demandingness. Sickliness as an infant was the most salient predictive risk factor of later child demandingness. Developmental delay was the most significant predictor of subsequent negative parenting. Results are discussed as being more indicative of additive rather than mediational processes given that early child risk and negative maternal parenting both contributed uniquely to the subsequent development of child demandingness.