Long-term alcohol effects on hepatic phosphoglucomutase activities in relation to posttranslational modification of the protein

Posttraumatic Stress Disorder, Health Problems, and Depression Among African American Women in Residential Substance Use Treatment

BACKGROUND

Rates of posttraumatic stress disorder (PTSD) are high among women seeking treatment for substance use disorders (SUDs). Minority women, in particular, experience high rates of trauma and may be less likely to disclose trauma history. This article identifies items from pre-existing screening measures that can be used across settings to sensitively but noninvasively identify women with likely PTSD.

METHOD

For a sample of 104 African American women in residential SUD treatment who provided informed consent as a part of a larger randomized clinical trial, the prevalence of trauma and PTSD, as well as the relationships between trauma, health, depression, and distress, was examined. Measures included Posttraumatic Stress Diagnostic Scale (PDS), Center for Epidemiologic Studies-Depression Scale (CES-D), Pennebaker Inventory of Limbic Languidness (PILL), and Brief Symptom Inventory (BSI). Additional analyses were undertaken to determine if a subset of noninvasive items could serve to identify the presence of a probable PTSD diagnosis.

RESULTS

Most women (94.2%) reported at least one lifetime trauma, with over half (51.0%) meeting DSM-IV criteria for PTSD. Women with greater trauma symptom severity reported more health problems and higher levels of depression and distress. Five BSI items and one CES-D item were significantly associated with a probable PTSD diagnosis with a sensitivity of 88.7%, a specificity of 66.7%, a positive predictive value of 73.4%, a negative predictive value of 85.0%, and an accuracy of 77.9%.

CONCLUSION

Findings affirm that African American women with SUDs present for residential treatment with comorbid psychiatric and emotional conditions that warrant assessment and treatment. Results highlight potential benefits of brief screening with routine measures and coordinated access to ancillary psychiatric and medical services, in conjunction with substance treatment, such as in residential or primary care.

[Studies on the mode of action of bacterial AB5 toxins]

Bacterial AB5 toxins are proteins, produced by pathogenic bacteria including of Vibrio cholerae, Shigella dysenteriae, and enterohaemorrhagic Escherichia coli, which are usually released into the extracellular medium and cause disease by killing or altering the metabolism of target eukaryotic cells. The toxins are usually composed of one A subunit (a toxic domain) and five B subunits (a receptor-binding domain). This article overviews the characteristics and mode of actions of AB5 toxins including cholera toxin, Shiga-like toxin, and subtilase cytotoxin, and highlights current topics related to the roles of the effectors in promoting bacterial infection.

Mediators of adverse birth outcomes among socially disadvantaged women

BACKGROUND

Numerous studies find that socially disadvantaged women are more likely than socially advantaged women to deliver infants that weigh less than normal and/or are born weeks prior to their due date. However, little is known about the pathways that link maternal social disadvantage to birth outcomes. Using data from a prospective cohort study, we examined whether antenatal psychosocial stress, substance use, and maternal health conditions in pregnancy mediated the pathway between maternal social disadvantage and birth outcomes.

METHODS

Analyses used structural equation modeling to examine data from a community clinic-based sample (n=2168) of pregnant women who completed questionnaires assessing psychosocial functioning and health behaviors as well as sociodemographic characteristics, which were matched with subsequent birth outcome data.

RESULTS

Analyses revealed maternal social disadvantage predicted poorer birth outcomes through a mediated pathway including maternal health conditions in pregnancy.

CONCLUSIONS

The findings demonstrate that maternal social disadvantage is associated with poor health status in pregnancy, which in turn adversely affects birth outcomes. Results argue for more systematic attention to the roles of social disadvantage, including life course perspectives that trace social disadvantage prior to and through pregnancy.

Prevalence and correlates of suicidal ideation during pregnancy

Data are scarce regarding the prevalence and risk factors for antenatal suicidal ideation because systematic screening for suicidal ideation during pregnancy is rare. This study reports the prevalence and correlates of suicidal ideation during pregnancy. We performed cross-sectional analysis of data from an ongoing registry. Study participants were 2,159 women receiving prenatal care at a university obstetric clinic from January 2004 through March 2010. Multiple logistic regression identified factors associated with antenatal suicidal ideation as measured by the Patient Health Questionnaire. Overall, 2.7% of the sample reported antenatal suicidal ideation. Over 50% of women who reported antenatal suicidal ideation also reported major depression. In the fully adjusted model antenatal major depression (OR = 11.50; 95% CI 5.40, 24.48) and antenatal psychosocial stress (OR = 3.19; 95% CI 1.44, 7.05) were positively associated with an increased risk of antenatal suicidal ideation. We found that being non-Hispanic White was associated with a decreased risk of antenatal suicidal ideation (OR = 0.51; 95% CI 0.26-0.99). The prevalence of antenatal suicidal ideation in the present study was similar to rates reported in nationally representative non-pregnant samples. In other words, pregnancy is not a protective factor against suicidal ideation. Given the high comorbidity of antenatal suicidal ideation with major depression, efforts should be made to identify those women at risk for antenatal suicidal ideation through universal screening.

Depressive disorders during pregnancy: prevalence and risk factors in a large urban sample

OBJECTIVE

To estimate the prevalence of major and minor depression, panic disorder, and suicidal ideation during pregnancy while also identifying factors independently associated with antenatal depressive disorders.

METHODS

In this prospective study, participants were 1,888 women receiving ongoing prenatal care at a university obstetric clinic from January 2004 through January 2009. Prevalence of psychiatric disorders was measured using the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) criteria based on the Patient Health Questionnaire. Multiple logistic regression identified factors associated with probable major depressive disorder and any depressive disorder.

RESULTS

Antenatal depressive disorders were present in 9.9% with 5.1% (97) meeting criteria for probable major depression and 4.8% (90) meeting criteria for probable minor depression. Panic disorder was present in 3.2% (61), and current suicidal ideation was reported by 2.6% (49). Among patients with probable major depression, 29.5% (28) reported current suicidal ideation. Psychosocial stress (odds ratio [OR], 1.29; 95% confidence interval [CI], 1.21-1.36), domestic violence (OR 3.45; 95% CI 1.46-8.12), chronic medical conditions (OR 3.05; 95% CI 1.63-5.69), and race (Asian: OR 5.81; 95% CI 2.55-13.23; or African American: OR 2.98; 95% CI 1.24-7.18) each significantly increased the odds of probable antepartum major depressive disorder, whereas older age (OR 0.92; 95% CI 0.88-0.97) decreased the odds. Factors associated with odds of any depression were similar overall except that Hispanic ethnicity (OR 2.50; 95% CI 1.09-5.72) also independently increased the odds of any depression.

CONCLUSION

Antenatal major and minor depressive disorders are common and significantly associated with clinically relevant and identifiable risk factors. By understanding the high point prevalence and associated factors, clinicians can potentially improve the diagnosis and treatment rates of serious depressive disorders in pregnant women.

LEVEL OF EVIDENCE

II.

Establishment of a protein reference map for soybean root hair cells

Root hairs are single tubular cells formed from the differentiation of epidermal cells on roots. They are involved in water and nutrient uptake and represent the infection site on leguminous roots by rhizobia, soil bacteria that establish a nitrogen-fixing symbiosis. Root hairs develop by polar cell expansion or tip growth, a unique mode of plant growth shared only with pollen tubes. A more complete characterization of root hair cell biology will lead to a better understanding of tip growth, the rhizobial infection process, and also lead to improvements in plant water and nutrient uptake. We analyzed the proteome of isolated soybean (Glycine max) root hair cells using two-dimensional polyacrylamide gel electrophoresis (2D-PAGE) and shotgun proteomics (1D-PAGE-liquid chromatography and multidimensional protein identification technology) approaches. Soybean was selected for this study due to its agronomic importance and its root size. The resulting soybean root hair proteome reference map identified 1,492 different proteins. 2D-PAGE followed by mass spectrometry identified 527 proteins from total cell contents. A complementary shotgun analysis identified 1,134 total proteins, including 443 proteins that were specific to the microsomal fraction. Only 169 proteins were identified by the 2D-PAGE and shotgun methods, which highlights the advantage of using both methods. The proteins identified are involved not only in basic cell metabolism but also in functions more specific to the single root hair cell, including water and nutrient uptake, vesicle trafficking, and hormone and secondary metabolism. The data presented provide useful insight into the metabolic activities of a single, differentiated plant cell type.

Barriers to employment among working-aged patients with major burn injury

The purpose of this study was to examine the prevalence of preexisting and burn-related impairments and to describe their association with preburn employment status. Data gathered during the acute hospitalization were analyzed on a consecutive series of burn patients aged 16 to 64 years (N = 770) enrolled in a prospective, longitudinal, multicenter study. Patients who were unemployed before the injury were more likely than those who were employed to report being alcohol-dependent (36 vs 18%), abusing other drugs (22 vs 10%), having received psychiatric treatment in the past year (21 vs 6%), and having preexisting physical disability (23 vs 3%); all were significant at P < .001). Of the unemployed patients who received toxicologic screening at admission, 49% tested positive for alcohol and 39% positive for other drugs, percentages that were significantly higher than 26 and 31%, respectively, for the employed. With adjustment for age, sex, race, and education, variables that were most predictive of preinjury unemployment status were preexisting physical disability (odds ratio, 51.0; 95% confidence interval, 7.7-336.9) and being alcohol-positive at admission (odds ratio, 2.8; 95% confidence interval, 1.2-6.8). Unemployed and employed patients also differed significantly in injury patterns and clinical outcomes, with inhalation injury and psychiatric distress being more prevalent among the unemployed and both hand burns and hand surgery among the employed. The greater prevalence of preexisting impairments among survivors who were unemployed before the injury helps explain why preburn employment status is such a powerful determinant of postburn work outcomes, and suggests the need to include psychosocial services in a program of comprehensive rehabilitation.