Faculty Bibliography

Inhalation of ozone (O₃), a gaseous air pollutant, causes lung injury, lung inflammation, and airway hyperresponsiveness. Macrophages, mast cells, and neutrophils contribute to one or more of these sequelae induced by O₃ Furthermore, each of these aforementioned cells express chemokine (C-C motif) receptor-like 2 (Ccrl2), an atypical chemokine receptor that facilitates leukocyte chemotaxis. Given that Ccrl2 is expressed by cells essential to the development of O₃-induced lung pathology and that chemerin, a Ccrl2 ligand, is increased in bronchoalveolar lavage fluid (BALF) by O₃, we hypothesized that Ccrl2 contributes to the development of lung injury, lung inflammation, and airway hyperresponsiveness induced by O₃ To that end, we measured indices of lung injury (BALF protein, BALF epithelial cells, and bronchiolar epithelial injury), lung inflammation (BALF cytokines and BALF leukocytes), and airway responsiveness to acetyl-β-methylcholine chloride (respiratory system resistance) in wild-type and mice genetically deficient in Ccrl2 (Ccrl2-deficient mice) 4 and/or 24 hours following cessation of acute exposure to either filtered room air (air) or O₃ In air-exposed mice, BALF chemerin was greater in Ccrl2-deficient as compared to wild-type mice. O₃ increased BALF chemerin in mice of both genotypes, yet following O₃ exposure, BALF chemerin was greater in Ccrl2-deficient as compared to wild-type mice. O₃ increased indices of lung injury, lung inflammation, and airway responsiveness. Nevertheless, no indices were different between genotypes following O₃ exposure. In conclusion, we demonstrate that Ccrl2 modulates chemerin levels in the epithelial lining fluid of the lungs but does not contribute to the development of O₃-induced lung pathology.

OBJECTIVE:To evaluate whether varicocelectomy improves both serum testosterone and sexual function, as assessed by the Male Sexual Health Questionnaire (MSHQ). METHODS:A retrospective chart review of patients who have undergone varicocelectomy and had both pre- and postoperative MSHQ was performed. The MSHQ is a clinically validated questionnaire that assesses erectile function, ejaculatory function, and sexual satisfaction, with higher scores indicating better function. Clinical parameters pre and postvaricocelectomy were compared with paired t test. RESULTS:Thirty-four patients met study criteria. Seventeen patients (50%) presented for infertility, and the remaining 13 had symptomatic varicocele associated with hypogonadism. Average postsurgical follow-up was 20.6 ± 12.5 months. The majority of men in the study had bilateral varicoceles and left grade III varicoceles. Significant improvements in the total MSHQ score (3.9 ± 8.7, P = .027), the MSHQ erectile function (1.2 ± 2.3, P = .007), and the MSHQ ejaculatory function (1.4 ± 3.1, P = .018) domains were seen. Fifteen (44%) men saw improvement in their erectile function and 18 (53%) saw improvement in ejaculatory function. The improvement in serum testosterone was also significant (136.0 ± 201.3 ng/dL, P = .007). CONCLUSION/CONCLUSIONS:Microsurgical repair of varicocele not only improves testosterone, but also improves patient-reported erectile and ejaculatory functions. Patients can confidently be counseled that varicocelectomy has the potential to improve sexual function along with serum testosterone.

CONTEXT: Ventricular assist devices (VADs) improve quality of life in advanced heart failure (HF) patients, but there are little data exploring psychological symptoms in this population. OBJECTIVE: This study examined the prevalence of psychiatric symptoms and disease over time in VAD patients. METHODS: This prospective multicenter cohort study enrolled patients immediately before or after VAD implant and followed them up to forty-eight weeks. Depression and anxiety were assessed with PROMIS SF8a questionnaires. The panic disorder, acute stress disorder (ASD) and post-traumatic stress disorder (PTSD) modules of the Structured Clinical Interview for the DSM were used. RESULTS: Eighty-seven patients were enrolled. Post-implant, depression and anxiety scores decreased significantly over time (p=0.03 and p<0.001 respectively). Two patients met criteria for panic disorder early after implantation but symptoms resolved over time. None met criteria for ASD or PTSD. CONCLUSIONS: Our study suggests VADs do not cause serious psychological harms and may have a positive impact on depression and anxiety. Furthermore, VADs did not induce PTSD, panic disorder or ASD in this cohort.

Aims/UNASSIGNED:The transformation of the United Arab Emirates (UAE) from a semi-nomadic to a high income society has been accompanied by increasing rates of obesity and Type 2 diabetes mellitus. We examined if the AGE-RAGE (receptor for advanced glycation endproducts) axis is associated with obesity and diabetes mellitus in the pilot phase of the UAE Healthy Futures Study (UAEHFS). Methods/UNASSIGNED:517 Emirati subjects were enrolled and plasma/serum levels of AGE, carboxy methyl lysine (CML)-AGE, soluble (s)RAGE and endogenous secretory (es)RAGE were measured along with weight, height, waist and hip circumference (WC/HC), blood pressure, HbA1c, Vitamin D levels and routine chemistries. The relationship between the AGE-RAGE axis and obesity and diabetes mellitus was tested using proportional odds models and linear regression. Results/UNASSIGNED:After covariate adjustment, AGE levels were significantly associated with diabetes status. Levels of sRAGE and esRAGE were associated with BMI and levels of sRAGE were associated with WC/HC. Conclusions/UNASSIGNED:The AGE-RAGE axis is associated with diabetes status and obesity in this Arab population. Prospective serial analysis of this axis may identify predictive biomarkers of obesity and cardiometabolic dysfunction in the UAEHFS.

BACKGROUND:The Food and Drug Administration's 2004 antidepressant warning was followed by decreases in antidepressant prescribing for youth. This was due to declines in all types of depression treatment, not just the intended changes in antidepressant prescribing patterns. Little is known about how these patterns varied by race/ethnicity. METHOD:Data are Medicaid claims from four U.S. states (2002-2009) for youth ages 5-17. Interrupted time series analyses measured changes due to the warning in levels and trends, by race/ethnicity, of three outcomes: antidepressant prescription fills, depression treatment visits, and incident fluoxetine prescription fills. RESULTS:Prewarning, antidepressant fills were increasing across all racial/ethnic groups, fastest for White youth. Postwarning, there was an immediate drop and continued decline in the rate of fills among White youth, more than double the decline in the rate among Black and Latino youth. Prewarning, depression treatment visits were increasing for White and Latino youth. Postwarning, depression treatment stabilized among Latinos, but declined among White youth. Prewarning, incident fluoxetine fills were increasing for all groups. Postwarning, immediate increases and increasing trends of fluoxetine fills were identified for all groups. CONCLUSIONS:Antidepressant prescription fills declined most postwarning for White youth, suggesting that risk information may have diffused less rapidly to prescribers or caregivers of minorities. Decreases in depression treatment visits help to explain the declines in antidepressant prescribing and were largest for White youth. An increase in incident fluoxetine fills, the only medication indicated for pediatric depression at the time, suggests that the warning may have shifted prescribing practices.

Introduction: Waterpipe use is a significant health concern in low- and middle-income countries like Viet Nam, yet there is a lack of research on factors that may influence use and self-efficacy to quit among adults. Aims: This study examined the relationship between social norms related to waterpipe use and self-efficacy to quit among male waterpipe smokers in Viet Nam. Methods: A cross-sectional survey was conducted with 214 adult male waterpipe smokers enrolled in a large cluster"“randomised controlled trial conducted in a rural province in Viet Nam. Associations between social norms related to waterpipe smoking and the participants"™ confidence to quit waterpipes were assessed using hierarchical regression models to account for differences among study sites and other covariates. Results: Self-efficacy to quit smoking was positively associated with immediate family members"™ not minding participants smoking and with extended family's encouragement to quit smoking. Conclusions: The findings suggest the need for a more comprehensive understanding of the functions and characteristics of the social context of waterpipe smoking, including the social networks of waterpipe smokers, to inform effective cessation interventions for waterpipe smokers.

Adequate docosahexaenoic acid (DHA) is essential for the optimal growth and development of the fetus. Maternal DHA content fluctuates during pregnancy. The correlation of DHA content with dietary intake might be varied over the course of pregnancy. We aimed to compare the dietary DHA intake, estimated by a DHA-specific semiquantitative food frequency questionnaire (FFQ) against its blood content, among mid- and late-term pregnant women. A total of 804 Chinese pregnant women completed the tailored FFQ and provided fasting venous blood samples. Dietary DHA intake (mg/day) in the previous month was calculated from the FFQ using Chinese Food Composition Table. DHA concentrations (weight percent of total fatty acids) in plasma and erythrocytes were measured by capillary gas chromatography. Spearman correlation coefficients (r_s) between DHA intake and its relative concentrations were calculated. After adjustment for maternal age, pre-pregnancy body mass index, stage of pregnancy, parity, education level, ethnicity, and annual family income per capita, the correlation coefficients of DHA intake with its concentrations in plasma and erythrocytes were 0.35 and 0.33, respectively (p < 0.001). The correlations were relatively stronger among women in late pregnancy (r_s = 0.44 in plasma and 0.39 in erythrocytes) than those in mid-pregnancy (r_s = 0.25 and 0.26). The significant correlations were consistently observed in subgroups stratified by regions, except for erythrocytes in women living in a coastland area. Multiple regression analyses also indicated significant positive linear correlations between DHA intake and its plasma or erythrocytes concentrations (p < 0.001). In conclusion, dietary DHA intake, estimated by the FFQ, was positively correlated with its concentrations in plasma and erythrocytes in Chinese pregnant women, especially for women in late pregnancy, with the exception of the erythrocytes of those living in a coastland area.

BACKGROUND AND OBJECTIVES/OBJECTIVE:Causes of CKD differ in prognosis and treatment. Metabolomic indicators of CKD cause may provide clues regarding the different physiologic processes underlying CKD development and progression. DESIGN, SETTING, PARTICIPANTS & MEASUREMENTS/METHODS:=423). RESULTS:<0.007), with all replicated metabolites exhibiting higher levels in polycystic kidney disease and lower levels in glomerular disease compared with CKD of other causes. CONCLUSIONS:Metabolomic profiling identified several metabolites strongly associated with cause of CKD.