Intervention trial with calcium montmorillonite clay in a south Texas population exposed to aflatoxin.

South Texas currently has the highest incidence of hepatocellular carcinoma (HCC) in the United States, a disease that disproportionately affects Latino populations in the region. Aflatoxin B1 (AFB1) is a potent liver carcinogen that has been shown to be present in a variety of foods in the United States, including corn and corn products. Importantly, it is a dietary risk factor contributing to a higher incidence of HCC in populations frequently consuming AFB1-contaminated diets. In a randomised double-blind placebo controlled trial, we evaluated the effects of a 3-month administration of ACCS100 (refined calcium montmorillonite clay) on serum AFB1-lysine adduct (AFB-Lys) level and serum biochemistry in 234 healthy men and women residing in Bexar and Medina counties, Texas. Participants recruited from 2012 to 2014 received either a placebo, 1.5 g or 3 g ACCS100 each day for 3 months, and no treatment during the fourth month. Adverse event rates were similar across treatment groups and no significant differences were observed for serum biochemistry and haematology parameters. Differences in levels of AFB-Lys at 1, 3 and 4 months were compared between placebo and active treatment groups. Although serum AFB-Lys levels were decreased by month 3 for both treatment groups, the low dose was the only treatment that was significant (p = 0.0005). In conclusion, the observed effect in the low-dose treatment group suggests that the use of ACCS100 may be a viable strategy to reduce dietary AFB1 bioavailability during aflatoxin outbreaks and potentially in populations chronically exposed to this carcinogen.

Difficult encounters with psychiatric patients: a South Texas Psychiatry practice-based research network (PBRN) study.

PURPOSE: To examine the prevalence of difficult psychiatrist-patient interactions of 20 psychiatrists in the South Texas Psychiatric practice-based research network, determine what characteristics were associated with "difficult" patients, and compare findings with previous studies in primary care. METHODS: During a 2-month observational study, psychiatrists collected patient information on setting, demographics, diagnoses, and medications and rated the patients using the Difficult Doctor-Patient Relationship Questionnaire, which had previously been used and validated in the primary care setting. RESULTS: A total of 905 valid data cards were collected. Difficult patients were identified in 15% of the sample. Diagnoses of schizophrenia, alcohol/substance abuse, and personality disorder were associated with difficulty. Psychiatrists least burdened by difficult patients were older and in a solo practice and worked 51 to 55 hours per week. CONCLUSIONS: This cross-sectional study demonstrates that psychiatrists encounter difficult patients at a rate (15%) similar to that of primary care physicians. Mentoring programs and structured treatment interventions for the most difficult patient groups may assist all physicians who treat psychiatric patients, whether in specialty, family medicine, or other primary care settings.