Interview with Darrel A. Regier. The developmental process for the diagnostic and statistical manual of mental disorders, fifth edition. Interview by Norman Sussman

Correlations and network analysis between food intake and depression among Chinese rural elderly based on CLHLS 2018

BACKGROUND

Implementing effective interventions for specific depressive symptoms is of vital importance to reduce the disease burden of depression. Previous studies have identified links between various dietary patterns and depression among elderly individuals. However, associations between food consumption and specific depressive symptoms remained largely unknown.

METHOD

We included 5171 individuals living in the rural and aged above 65 from Chinese Longitudinal Health and Longevity Survey (CLHLS 2017-2018). We used the 10-item short form of the Center for Epidemiologic Studies Depression Scale (CESD-10) to assess depressive symptoms and selected 4 common foods to assess food intake. Univariate analysis and multifactorial analysis were used to identify influencing factors of depression. Network analysis was used to identify central symptoms and bridge symptoms between food consumption and depression network. Finally, network stability was examined by a case-dropping bootstrap procedure.

RESULT

Regression model showed vegetable intake, fish intake, and egg intake were associated with depression. Network analysis revealed that nodes "Feeling sad or depressed" (A3) and "Feeling nervous or fearful" (A6) were central symptoms and "Vegetables consumption" (B2), "Eggs consumption" (B4), and "Sleep quality" (A10) were bridge symptoms of the food consumption and depression network.

LIMITATIONS

Recall bias introduced by the self-report questionnaire and the use of cross-sectional data.

CONCLUSION

Central symptoms, as well as bridge symptoms, played a critical role in the food consumption and depression network. Timely, systematic, multi-level interventions targeting on central symptoms and bridge symptoms may benefit in alleviating depressive symptoms of Chinese rural elderly.

Associations between Sjogren syndrome and psychiatric disorders in European populations: a 2-sample bidirectional Mendelian randomization study

Background

Psychiatric disorders, such as major depressive disorder (MDD), anxiety disorder (AD), bipolar disorder (BD), and schizophrenia (SCZ), are disturbances in brain activity that lead to disorders of cognition, behavior, and emotion regulation. Among Sjogren syndrome (SS) patients, psychiatric disorders are more prevalent than in the general population. Identifying associated risk factors can provide new evidence for clinical diagnosis and treatment.

Methods

We selected genetic instruments based on published genome-wide association studies (GWASs) to determine predisposition. Then, we conducted a 2-sample bidirectional Mendelian randomization (MR) analysis to explore the potential causal associations between SS and four major psychiatric disorders. The primary analysis was performed using MR with the inverse-variance weighted method. Confirmation was achieved through Steiger filtering and testing to determine the causal direction. Sensitivity analyses were conducted using MR-Egger, MR-PRESSO, and "leave-one-out" method methods.

Results

Our study showed that SS was linked to BD and SCZ, indicating that individuals with SS may have a reduced risk of developing BD (IVW: OR = 0.940, P=0.014) and SCZ (IVW: OR = 0.854, P=1.47*10-4), while there was no causal relationship between SS and MDD or AD. MR-Egger regression shows no evidence of pleiotropy (BD: intercept = 0.007, p = 0.774; SCZ: intercept = 0.051, p = 0.209). The same as the MR-PRESSO analysis (BD: global test p = 1.000; SCZ: global test p = 0.160). However, the results from the leave-one-out analysis demonstrated instability. Specifically, after excluding SNP rs3117581, the effects on BD and SCZ were found to be non-significant, suggesting the potential influence of unrecognized confounding factors. The results of the reverse MR show that four major psychiatric disorders had no causal effects on SS.

Conclusions

Our research findings demonstrate a causal relationship between SS and SCZ, as well as between SS and BD. There are no causal effects between the four major psychiatric disorders and SS. These findings suggest that SS may have the potential to reduce the risk of both psychiatric disorders. This study provides new insight for their prevention and treatment.

Relationships among oral hygiene behavior, toothache, and depressive symptoms in Chinese older adults

OBJECTIVES

The study aims to investigate the relationships among oral hygiene behavior, toothache, and depression among Chinese older adults.

METHODS

We used data came from the 2018 wave of Chinese Longitudinal Healthy Longevity Survey (CLHLS). The Center for Epidemiologic Studies Depression Scale was used to evaluate depression. Binary logistic regression was performed to analyze the relationships among oral hygiene behavior, toothache, and depression.

RESULTS

A total of 12,172 older adults were included in the study, of whom 27.2% had depression. Compared with those who did not brush their teeth daily, those who brushed their teeth at least once daily exhibited lower odds of having depressive symptoms (odds ratio [OR] = 0.86, 95% confidence interval [CI] = 0.77-0.97 versus OR = 0.81, 95% CI = 0.71-0.93). Compared with those who did not have toothache, those who had toothache over the past 6 months exhibited higher odds of having depression (OR = 1.49, 95% CI = 1.33-1.68). Living arrangement had a significant effect on the correlation between toothache and depression (p = 0.049), who lived alone and had toothache exhibited higher odds of having depressive symptoms.

CONCLUSIONS

Oral hygiene behavior and toothache are associated with depression. Taking effective measures to maintain a daily toothbrushing pattern and reduce the occurrence of toothache may mitigate the risk of depression among older adults, especially among those living alone.

CLINICAL RELEVANCE

The present study reports that the potential relationship between different oral hygiene behavior, toothache, and depressive symptoms.

Association between Dietary Patterns and Depression in Chinese Older Adults: A Longitudinal Study Based on CLHLS

(1) Objective: This study aimed to investigate the relationship between dietary patterns and depression in Chinese older adults. (2) Method: A cohort study was conducted on the relationship between dietary patterns and the risk of depression in older adults based on the China Health and Longevity Longitudinal Survey (CLHLS) from 2011 to 2014. Exploratory factor analysis was used to identify dietary patterns. The relationship between dietary patterns and the risk of depression after four years was examined using logistic regression, and subgroup analysis was carried out to determine whether the association differed by gender. (3) Results: A total of 2873 older adults were included in our cohort study. Three dietary patterns were identified: vegetable-egg-bean-milk pattern, meat-fish pattern, and salt-preserved vegetable-garlic pattern. The vegetable-egg-beans-milk pattern was negatively correlated with the risk of geriatric depression development (adjusted OR = 0.65 (95%CI: 0.49-0.87)), and the salt-preserved vegetable-garlic pattern was positively associated with aged depression risk (adjusted OR = 1.33 (95CI: 1.00-1.77)). The meat-fish pattern was not associated with the risk of depression in older adults. These associations were consistent in both men and women. (4) Conclusions: In this cohort study, the vegetable-egg-beans-milk dietary pattern was associated with lower risk of depression, while the salt-preserved vegetable-garlic dietary pattern was associated with higher risk of depression, and there were no gender differences in these associations.