Disease-focused or integrated treatment: diabetes and depression

Transformation of primary care settings implementing a co-located team-based care model: a scoping review

BACKGROUND

In Canada, primary care reforms led to the implementation of various team-based care models to improve access and provide more comprehensive care for patients. Despite these advances, ongoing challenges remain. The aim of this scoping review is to explore current understanding of the functioning of these care models as well as the contexts in which they have emerged and their impact on the population, providers and healthcare costs.

METHODS

The Medline and CINAHL databases were consulted. To be included, team-based care models had to be co-located, involve a family physician, specify the other professionals included, and provide information about their organization, their relevance and their impact within a primary care context. Models based on inter-professional intervention programs were excluded. The organization and coordination of services, the emerging contexts and the impact on the population, providers and healthcare costs were analysed.

RESULTS

A total of 5952 studies were screened after removing duplicates; 15 articles were selected for final analysis. There was considerable variation in the information available as well as the terms used to describe the models. They are operationalized in various ways, generally consistent with the Patient's Medical Home vision. Except for nurses, the inclusion of other types of professionals is variable and tends to be associated with the specific nature of the services offered. The models primarily focus on individuals with mental health conditions and chronic diseases. They appear to generally satisfy the expectations of the overarching framework of a high-performing team-based primary care model at patient and provider levels. However, economic factors are seldom integrated in their evaluations.

CONCLUSIONS

The studies rarely provide an overarching view that permits an understanding of the specific contexts, service organization, their impacts, and the broader context of implementation, making it difficult to establish universal guidelines for the operationalization of effective models. Negotiating the inherent complexity associated with implementing models requires a collaborative approach between various stakeholders, including patients, to tailor the models to the specific needs and characteristics of populations in given areas, and reflection about the professionals to be included in delivering these services.

Socio-demographic disparities in health-related quality of life after hip fracture in China: evidence from the China Health and Retirement Longitudinal Study

This study analyzed the impact of hip fractures on people's health-related quality of life and its socio-demographic disparities in China.

PURPOSE

Hip fractures cause high mortality and worsened health-related quality of life (HRQoL). This study aimed to investigate whether socio-demographic-related inequities in post-hip fracture participants' HRQoL exist in China.

METHODS

Data from the China Health and Retirement Longitudinal Study (waves 2013, 2015, and 2018) were used. The measurement of HRQoL in this study focused on 5 health dimensions: depression, body pain, mobility, basic activities of daily living, and instrumental activities of daily living. A difference-in-differences (DID) analysis with multiple time periods was performed to gauge the impact of hip fracture on HRQoL. A multivariate regression approach was used to explore socio-demographic-related factors associated with inequities of HRQoL.

RESULTS

A total of 23,622 individuals were included, and 341 participants reported hip fracture events during the survey period. In participants with hip fracture, the presentation rate of body pain increased by 14% (p < 0.01) and the HRQoL of other health dimensions worsened (p ≤ 0.01) after hip fracture. The DID analysis showed that hip fracture had a negative impact on all HRQoL dimensions (p < 0.01). Socioeconomic-related factors of HRQoL inequities included school education level and location of residence. Study participants with hip fracture with greater educational attainment or living in urban areas had higher (p < 0.05) levels of HRQoL. In addition, comorbidities also correlated with a worse HRQoL (p < 0.05).

CONCLUSION

Hip fracture significantly affects people's HRQoL in China, and the impact is more profound for those with lower educational attainment or living in rural areas. Targeted interventions should be designed to narrow this inequity.

Efficacy of Depression Management in an Integrated Psychiatric-Diabetes Education Clinic for Comorbid Depression and Diabetes Mellitus Types 1 and 2

OBJECTIVES

Patients with type 1 and type 2 diabetes mellitus (DM) are 2 times as predisposed to developing mood disorders, such as major depressive disorder (MDD), compared with patients without diabetes. Management of comorbid MDD and DM remains a challenge because patients often suffer from poor medication compliance, lifestyle factors and refractory depression. Integration of psychiatric care into diabetes education clinics (DECs) has been suggested as an effective method of managing the comorbid conditions. As this strategy is being implemented into clinical care, its effectiveness in practice warrants further research.

METHODS

A retrospective chart review of 24 patients (10 men and 14 women) followed by an integrated psychiatry-DEC in Newmarket, Ontario, Canada, between April 2016 and July 2019 was performed. Depressive symptom severity at each appointment was assessed with the Patient Health Questionnaire-9 (PHQ-9) depression rating scale.

RESULTS

There was no significant change in PHQ-9 depression rating scale scoring between the first and most recent appointments (paired t test, p=0.356); however, patients who had improved PHQ-9 scoring were more likely to have more clinic visits (analysis of variance, p=0.0271). A significant negative correlation was found between both number of visits (Pearson coefficient, -0.56; p=0.005) and overall time the patients were followed by DEC (Pearson coefficient, -0.42; p=0.040) and PHQ-9 score changes between the first and most recent appointments. PHQ-9 change between individual appointments also displayed a positive correlation with time between appointments (Pearson coefficient, 0.26; p=0.027).

CONCLUSIONS

Regular follow up in a psychiatry-DEC service might be beneficial in managing MDD symptom severity for comorbid MDD and DM.

Adaptations and patient responses to behavioral intervention components in a depression-focused chronic disease care model implemented in India

Integrated care models offer one approach to treat patients with chronic multimorbidity. However, because these models consist of multiple components designed to provide individualized care, they should be adapted to best meet the needs of patients in diverse settings. This paper presents qualitative and quantitative data from a realist process evaluation embedded in the INtegrating DEPrEssioN and Diabetes treatmENT (INDEPENDENT) study to uncover what worked, for whom, how, and in what circumstances. We aimed to examine adaptations made to a care coordinator-led behavioral intervention, and how patients responded to adaptations, through a secondary analysis of these data. A purposive sample of 62 patients and 3 care coordinators were recruited based on their involvement with the INDEPENDENT care model across two clinics. Patients were interviewed and surveyed about their experiences in the care model and care coordinators were interviewed about their experiences implementing intervention components. Interview data were coded for reported modifications in intervention content, tools, and delivery; then, these adaptations were categorized by how they served to enhance implementation in the Indian context. Adaptations made in the delivery of this care model served two functions: (a) to improve health promotion communication between care coordinators and patients and (b) to improve patient engagement. Patients' expressed needs were consistent with what care coordinators perceived. Patients were satisfied with adaptations designed to improve intervention fit for local contexts. Study findings demonstrate that adapting components of an integrated care model can enhance patient satisfaction and engagement with behavioral interventions.

Understanding Diabetes-Related Distress Characteristics and Psychosocial Support Preferences of Urban African American Adults Living With Type 2 Diabetes: A Mixed-Methods Study

Purpose The purpose of this study is to understand diabetes-related distress (DRD) characteristics and identify psychosocial support preferences of urban African American adults living with type 2 diabetes (T2DM). Methods A 2-phase, mixed-methods sequential explanatory study design was used to gather data. In phase 1, a purposive sample of participants (N = 155) was recruited and asked to complete a written survey. The Diabetes Distress Scale (DDS17) was used to assess DRD, including subscales-emotional burden (EB), regimen distress (RD), interpersonal distress (ID), and physician distress (PD). In phase 2, a subset of phase 1 participants (N = 23) volunteered to attend 1 of 4 gender-stratified follow-up focus groups to contextualize the quantitative survey results. Results Survey findings indicate that on average, participants had moderate levels of DRD (aggregate), RD, and EB but had low ID and PD. During follow-up focus groups, participants described RD and EB as their primary distress types and emphasized that clinicians should prioritize the mental health aspects of T2DM similarly to its physical aspects. Participants expressed a desire for culturally appropriate peer support groups as a psychosocial support resource for distress coping and specifically requested the development of gender-stratified groups and groups for young adults. Conclusions Results support the need to screen for and address diabetes-related distress among African American patients with T2DM. Findings also inform the development of culturally appropriate psychosocial support resources to facilitate diabetes-related distress coping.

Integrated care programs for patients with psychological comorbidity: A systematic review and meta-analysis

OBJECTIVE

Presently, little is known about the characteristics and impact of integrated care programs for patients with psychological comorbidity. The aim was to provide an overview of these integrated care programs and their effectiveness.

METHODS

Systematic literature review including papers published between 1995 and 2014. An integrated care program had to consist of interventions related to at least two out of the six components of the Chronic Care Model. Programs had to address patients with psychological comorbidity, which is a psychological disease next to a somatic chronic disease. A meta-analysis was performed on depression treatment response and a best evidence synthesis was performed on other outcomes.

RESULTS

Ten programs were identified, which mostly addressed comorbid depression and consisted of interventions related to three to five components of the Chronic Care Model. Meta-analysis showed significantly higher odds for depression treatment response for patients receiving integrated care (OR: 2.49, 95%CI [1.66-3.75]). Best evidence synthesis suggested moderate evidence for cost-effectiveness and for a beneficial effect on patient satisfaction and emotional well-being. Insufficient evidence was found for a beneficial effect on health-related quality of life, medication adherence, Hb1Ac levels and mortality.

CONCLUSION

There are few studies evaluating integrated care programs for patients with psychological comorbidity. Although these studies suggest that integrated care programs could positively affect several patient outcomes and could be cost-effective, additional studies are recommended to further assess the value of integrated care for this patient group. This is especially important since the number of people with psychological comorbidity is rising.

Indomethacin reverses decreased hippocampal cell proliferation in streptozotocin-induced diabetic mice

Diabetes in humans and animals is accompanied by chronic low-grade inflammation, which could be a possible mediator of developing neuropathology and neurobehavioral deficits. The objective of the present study determined if decreasing inflammation could reverse diabetes-induced decreases in hippocampal cell proliferation, one aspect of hippocampal neurogenesis. C57BL/6J mice were made diabetic by administering streptozotocin (STZ; 195 mg/kg). STZ mice or vehicle controls received chronic treatment with the non-steroidal anti-inflammatory drug indomethacin (2 mg/kg for 14 days). Levels of glucose, corticosterone and cytokines were measured from plasma, cell proliferation was measured using BrdU incorporation in the hippocampus and TNF-αR1 and TNF-αR2 mRNA was measured using real-time PCR. STZ-induced diabetes increased plasma levels of glucose and corticosterone and decreased body weight. Cell proliferation in the hippocampus was reduced in diabetic mice by 50 %. The decreased level of cell proliferation was reversed by chronic treatment with indomethacin without changes to corticosterone and glucose levels. Plasma TNF-α levels increased in diabetic mice and were normalized by indomethacin treatment whereas IL-1 and IL-6 levels were unchanged by diabetes or indomethacin. In contrast, plasma levels of the cytokines IL-10 and IFN-gamma decreased in diabetic mice and were not affected by indomethacin treatment. STZ-induced diabetes decreased hippocampal expression of TNF-αR2 but not TNF-αR1 mRNA. Indomethacin ameliorated the effects of STZ on hippocampal neurogenesis independent of corticosterone and glycemic control, possibly by mediating the proinflammatory cytokine TNF-α. Inflammation is a potential novel pharmacological target for alleviating neurobehavioral complications arising from diabetes.

Relationship of serious psychological distress to quality of life in adults with diabetes

OBJECTIVE

To examine the association between serious psychological distress (SPD) and the Physical and Mental Health components of Quality of Life (QOL) while controlling for depression in a national sample of adults with diabetes.

METHODS

SPD was assessed in 1,659 adults with diabetes who participated in the 2007 Medical Care Expenditure Survey (MEPS). SPD was measured by the 6-item Kessler scale. Depression was assessed with the PHQ-2 screen. Quality of life was measured with the physical (PCS) and mental (MCS) components of the SF-12. We used multiple linear regression to assess the relationship between SPD and quality of life while controlling for relevant covariates and depression screen results to assess the independent effect of SPD on QOL above and beyond the effect of depression.

RESULTS

Among US adults with diabetes, 9% had SPD and 15.4% screened positive for depression. Among those with SPD, 85.8% had depression and among those with depression, 50.5% had SPD. In the adjusted model for socio-demographic factors and comorbidities, SPD was significantly associated with lower PCS scores (-5.51 95% CI -7.55; -3.45) and MCS scores (-18.99 95% CI -20.81; -17.18). In the adjusted model that also controlled for depression, SPD was still significantly associated with lower PCS scores (-3.03 95% CI -5.63; -0.43) and MCS scores (-9.46 95% CI -11.67; -7.24).

CONCLUSIONS

Among U. S. adults, SPD is associated with significantly diminished QOL above and beyond the effects of depression. Targeted interventions to mitigate the adverse effects of SPD are needed, independent of programs to address depression.

Application of the five stages of grief to diabetic limb loss and amputation

A potentially underappreciated member of the multidisciplinary approach to diabetic limb salvage is that of psychiatry. Diabetic patients are more likely to experience depression, and diabetic patients with depression are more likely to undergo an amputation. Also, both diabetes and depression independently increase the healthcare costs in the United States. The objective of the present investigation was to increase knowledge among diabetic foot practitioners with respect to psychiatric and other mental health patient-care issues, specifically the potential application of the 5 stages of grief to diabetic limb loss and amputation. We enlisted the assistance of a clinical professor from the psychiatry department at our institution to review the 5 stages of grief, provide context specific for application to diabetic limb loss, and offer clinically relevant guidelines for surgeons to better understand and communicate with their patients at each stage. The 5 stages reviewed were denial, anger, bargaining, depression, and acceptance. We hope that the present review will increase the body of knowledge with respect to relevant psychiatric issues and the diabetic foot and provide a starting point for increased awareness with respect to this important, yet underappreciated, aspect of patient care.

Contribution of neural cell death to depressive phenotypes of streptozotocin-induced diabetic mice

Major depression disorder (MDD) or depression is highly prevalent in individuals with diabetes, and the depressive symptoms are more severe and less responsive to antidepressant therapies in these patients. The underlying mechanism is little understood. We hypothesized that the pathophysiology of comorbid depression was more complex than that proposed for MDD and that neural cell death played a role in the disease severity. To test this hypothesis, we generated streptozotocin (STZ)-induced diabetic mice. These mice had blood glucose levels threefold above controls and exhibited depressive phenotypes as judged by a battery of behavioral tests, thus confirming the comorbidity in mice. Immunohistological studies showed markedly increased TUNEL-positive cells in the frontal cortex and hippocampus of the comorbid mice, indicating apoptosis. This finding was supported by increased caspase-3 and decreased Bcl-2 proteins in these brain regions. In addition, the serum brain-derived neurotrophic factor (BDNF) level of comorbid mice was reduced compared with controls, further supporting the neurodegenerative change. Mechanistic analyses showed an increased expression of mitochondrial fission genes fission protein 1 (Fis1) and dynamin-related protein 1 (Drp1), and a decreased expression of mitochondrial fusion genes mitofusin 1 (Mfn1), mitofusin 2 (Mfn2) and optical atrophy 1 (Opa1). Representative assessment of the proteins Drp1 and Mfn2 mirrored the mRNA changes. The data demonstrated that neural cell death was associated with the depressive phenotype of comorbid mice and that a fission-dominant expression of genes and proteins mediating mitochondrial dynamics played a role in the hyperglycemia-induced cell death. The study provides new insight into the disease mechanism and could aid the development of novel therapeutics aimed at providing neuroprotection by modulating mitochondrial dynamics to treat comorbid depression with diabetes.

Depressive phenotypes evoked by experimental diabetes are reversed by insulin

Clinical studies suggest a bidirectional relationship between diabetes and depression, where diabetes may increase risk for depressive symptoms and depression may increase risk for diabetes. Preclinical models examining the effects of diabetes on brain and behavior can provide insights to the pathophysiology underlying this relationship. The current study comprehensively examined, in C57BL/6 mice, the development of depressive phenotypes evoked by diabetes induced by streptozotocin (STZ) and determined if insulin treatment was able to reverse the diabetes-related changes on brain and affective behavior. Since anxiety is often comorbid with mood disturbances, behavioral tests for both anxiety and depression were administered. Possible physiological correlates of behavioral changes, including hippocampal cell proliferation, brain derived neurotrophic factor, and plasma corticosterone, were also measured. STZ-induced diabetes resulted in increased immobility in the tail suspension test, increased intracranial self-stimulation thresholds, decreased hippocampal cell proliferation, and increased corticosterone levels. Insulin treatment, on the other hand, reduced hyperglycemia, reversed the behavioral effects, and returned hippocampal cell proliferation and corticosterone to levels comparable to the control group. Anxiety-related behaviors were unaffected. This study showed that experimental diabetes in the mouse produced depressive phenotypes that were reversed by insulin therapy. Changes in reward-related behaviors and hippocampal cell proliferation may be useful markers to identify therapeutic interventions for comorbid diabetes and depression.

Impact of lifestyle intervention on lost productivity and disability: improving control with activity and nutrition

OBJECTIVE

To evaluate the effectiveness of a lifestyle intervention (LI) in reducing work loss and disability days.

METHODS

One year randomized controlled trial of health plan members (n = 147) with type 2 diabetes and obesity. Members were randomized to modest-cost LI or usual care (UC). Outcomes were group differences in cumulative days either missed at work or with disability using Mann-Whitney U-tests and Poisson regression models.

RESULTS

LI reduced the risk of workdays lost by 64.3% (P <or= 0.001) compared to UC (annual accumulation: UC: 3.49 days vs LI: 0.92 days, P = 0.01). LI decreased the risk of disability days by 87.2% (P = 0.0003) compared to UC (annual accumulation: UC: 5.3 days vs LI: 0.94 days, P <or= 0.001). Similar trends were observed among the subset of people with depression.

CONCLUSION

LIs reduce work loss and disability days associated with diabetes and obesity.