Efficacy of a New Protocol of Premixed 70/30 Human Insulin in Haitian Youth with Diabetes.

INTRODUCTION: Controlling insulin-treated diabetes is challenging in low-resource settings where only Neutral Protamine Hagedorn (NPH), regular (R) and premixed insulin formulations are available, self-monitoring of blood glucose (SMBG) supplies are scarce and food insecurity is common. We examined the impact of a treatment protocol that includes sliding scale-based 70/30 insulin adjustments in Haiti. METHODS: Thirty young patients aged 11-28 years with diabetes treated with premixed 70/30 insulin twice daily were included in the study. The participants performed one or two daily self-monitoring of blood glucose (SMBG) tests and attended our diabetes clinic monthly. They were randomized to two treatment groups, with one group remaining on the 70/30 insulin formulation (group 70 [G70]) and the other group switching to self-mixed NPH + R (group NR [GNR]). Sliding scales for insulin correction doses and meal insulin doses were designed based on the total daily insulin dose (TDD), carbohydrate ratio and insulin sensitivity factor. SMBG tests and insulin were administered before the morning and evening meals. The frequency of visits to the diabetes clinic was increased to biweekly during a 14-week follow-up. RESULTS: Fifteen patients of each group were included in the analysis. Baseline characteristics, increase in total daily dose and number of missed SMBG tests and skipped meals at 14 weeks did not differ between the two groups. Hemoglobin A1c (HbA1c) decreased from 9.5% (interquartile range [IQR] 8.8, 10.5) (80.3 mmol/mol) to 8.0% (IQR 7.1%, 9.0%) (63.9 mmol/mol) in G70 (p = 0.01), and from 10.6% (IQR 8.1,% 13.1)% (92.4 mmol/mol) to 9.0% (IQR 7.6%, 9.6%) (74.9 mmol/mol) in GNR (p = 0.10), with no significant between-group difference in reductions (p = 0.12). No serious acute complications were reported. Stopping the use of sliding scales and resuming monthly visits increased HbA1c to values not significantly different from baseline in both groups after 15 weeks. CONCLUSION: The use of sliding scales adjusted for missed SMBG tests and skipped meals, and frequent clinic visits that focus on patient self-management education significantly improved glycemic control in the patients with youth-onset diabetes in our study treated with premixed 70/30 human insulin in a low-resource setting.

Population Survey of Iodine Deficiency and Environmental Disruptors of Thyroid Function in Young Children in Haiti.

Context: Iodine deficiency is the leading cause of preventable neurodevelopmental delay in children worldwide and a possible public health concern in Haiti. Objective: To determine the prevalence of iodine deficiency in Haitian young children and its influence by environmental factors. Design: Cross-sectional study, March through June 2015. Setting: Community churches in 3 geographical regions in Haiti. Participants: 299 healthy Haitian children aged 9 months to 6 years; one-third each enrolled in a coastal, mountainous, and urban region. Main Outcome Measures: Urinary iodide, serum thyrotropin (TSH), goiter assessment, and urinary perchlorate and thiocyanate. Results: Mean age was 3.3±1.6 years, with 51% female, median family income USD 30/week, and 16% malnutrition. Median urinary iodide levels were normal in coastal (145 µg/L, interquartile range [IQR] 97 to 241) and urban regions (187 µg/L, IQR 92 to 316), but revealed mild iodine deficiency in a mountainous region (89 µg/L, IQR 56 to 129), P < 0.0001. Grade 1 goiters were palpated in 2 children, but TSH values were normal. Urinary thiocyanate and perchlorate concentrations were not elevated. Predictors of higher urinary iodide included higher urinary thiocyanate and perchlorate, breastfeeding, and not living in a mountainous region. Conclusions: Areas of mild iodine deficiency persist in Haiti's mountainous regions. Exposure to two well-understood environmental thyroid function disruptors is limited.

Chikungunya Virus Infection and Diabetes Mellitus: A Double Negative Impact.

The impact of chikungunya virus (CHIKV) infection on diabetic patients (DPs) has not been described. We aimed to compare clinical features of CHIKV infection in DPs and nondiabetic patients (NDPs), and to evaluate its effects on glycemic control among DPs. We recorded clinical information and, in DPs, glycemic control. Forty-six DPs and 53 NDPs aged ≥ 20 years living in Haiti, with acute CHIKV infection, were studied. Diabetes duration was 7.1 ± 6.1 years. The most common acute CHIKV clinical manifestations were arthralgia (100.0% DPs and 98.1% NDPs, P = 1.000) and fever (86.9% DPs and 90.5% NDPs, P = 0.750). In DPs as compared with NDPs, arthralgia was more intense (mean pain score of 6.0/10 ± 2.2 versus 5.1/10 ± 2.0, P = 0.04) and took longer to improve (8.2 ± 3.0 versus 3.5 ± 2.5 days, P < 0.0001). Severe arthralgia was more prevalent (58.7% versus 20.8%, P = 0.0002), as was myalgia (80.4% versus 50.9%, P = 0.003), and fever lasted longer (5.1 ± 1.8 versus 3.7 ± 1.7 days, P = 0.0002). Among DPs, median fasting capillary glucose before versus after disease onset was 132.5 and 167.5 mg/dL (P < 0.001), corresponding to a median increase of 26.8% (interquartile range: 14.4-50.1%). Antidiabetic medication was titrated up in 41.3%. In summary, among DPs, CHIKV infection has a significant negative impact on glycemic control and, compared with NDPs, results in greater morbidity. Close clinical and glycemic observation is recommended in DPs with CHIKV infection.

Specific cut-off points for waist circumference and waist-to-height ratio as predictors of cardiometabolic risk in Black subjects: a cross-sectional study in Benin and Haiti.

PURPOSE: Waist circumference (WC) and waist-to-height ratio (WHtR) are widely used as indicators of abdominal adiposity and the cut-off values have been validated primarily in Caucasians. In this study we identified the WC and WHtR cut-off points that best predicted cardiometabolic risk (CMR) in groups of African (Benin) and African ancestry (Haiti) Black subjects. METHODS: This cross-sectional study included 452 apparently healthy subjects from Cotonou (Benin) and Port-au-Prince (Haiti), 217 women and 235 men from 25 to 60 years. CMR biomarkers were the metabolic syndrome components. Additional CMR biomarkers were a high atherogenicity index (total serum cholesterol/high density lipoprotein cholesterol ≥4 in women and ≥5 in men); insulin resistance set at the 75th percentile of the calculated Homeostasis Model Assessment index (HOMA-IR); and inflammation defined as high-sensitivity C-reactive protein (hsCRP) concentrations between 3 and 10 mg/L. WC and WHtR were tested as predictors of two out of the three most prevalent CMR biomarkers. Receiver operating characteristic (ROC) curves, Youden's index, and likelihood ratios were used to assess the performance of specific WC and WHtR cut-offs. RESULTS: High atherogenicity index (59.5%), high blood pressure (23.2%), and insulin resistance (25% by definition) were the most prevalent CMR biomarkers in the study groups. WC and WHtR were equally valid as predictors of CMR. Optimal WC cut-offs were 80 cm and 94 cm in men and women, respectively, which is exactly the reverse of the generic cut-offs. The standard 0.50 cut-off of WHtR appeared valid for men, but it had to be increased to 0.59 in women. CONCLUSION: CMR was widespread in these population groups. The present study suggests that in order to identify Africans with high CMR, WC thresholds will have to be increased in women and lowered in men. Data on larger samples are needed.