Maternal seafood consumption is associated with improved selenium status: Implications for child health.

Selenium (Se) is required for synthesis of selenocysteine (Sec), an amino acid expressed in the active sites of Se-dependent enzymes (selenoenzymes), including forms with essential functions in fetal development, brain activities, thyroid hormone metabolism, calcium regulation, and to prevent or reverse oxidative damage. Homeostatic mechanisms normally ensure the brain is preferentially supplied with Se to maintain selenoenzymes, but high methylmercury (CH3Hg) exposures irreversibly inhibit their activities and impair Sec synthesis. Due to Hg's high affinity for sulfur, CH3Hg initially binds with the cysteine (Cys) moieties of thiomolecules which are selenoenzyme substrates. These CH3Hg-Cys adducts enter selenoenzyme active sites and transfer CH3Hg to Sec, thus irreversibly inhibiting their activities. High CH3Hg exposures are uniquely able to induce a conditioned Se-deficiency that impairs synthesis of brain selenoenzymes. Since the fetal brain lacks Se reserves, it is far more vulnerable to CH3Hg exposures than adult brains. This prompted concerns that maternal exposures to CH3Hg present in seafood might impair child neurodevelopment. However, typical varieties of ocean fish contain far more Se than CH3Hg. Therefore, eating them should augment Se-status and thus prevent Hg-dependent loss of fetal selenoenzyme activities. To assess this hypothesis, umbilical cord blood and placental tissue samples were collected following delivery of a cohort of 100 babies born on Oahu, Hawaii. Dietary food frequency surveys of the mother's last month of pregnancy identified groups with no (0 g/wk), low (0-12 g/wk), or high (12 + g/wk) levels of ocean fish consumption. Maternal seafood consumption increased Hg contents in fetal tissues and resulted in ∼34% of cord blood samples exceeding the EPA Hg reference level of 5.8 ppb (0.029 µM). However, Se concentrations in these tissues were orders of magnitude higher and ocean fish consumption caused cord blood Se to increase ∼9.4 times faster than Hg. Therefore, this study supports the hypothesis that maternal consumption of typical varieties of ocean fish provides substantial amounts of Se that protect against Hg-dependent losses in Se bioavailability. Recognizing the pivotal nature of the Hg:Se relationship provides a consilient perspective of seafood benefits vs. risks and clarifies the reasons for the contrasting findings of certain early studies.

Roots, Leaves, and Flowers: A Narrative Review of Herbs and Botanicals Used for Self-Managed Abortion in Asia and the Pacific.

Abortion has existed throughout history, often outside of formal health care systems. This type of care, now called self-managed abortion, has historically been achieved in part through botanicals and traditional medicines. Their use continues into the modern day, especially in Asia, Hawai'i, and other Pacific Islands, where indigenous medicine traditions practice alongside allopathic medicine. Many of these botanicals, such as papaya leaves, hibiscus flowers, and young ki, and traditional medicines, such as tianhuafen, yuanhua, and Shenghua Decoction, have undergone scientific and clinical investigation of their potential abortifacient and antifertility action. The incidence of self-managed abortion with such abortifacients in countries with severe abortion restrictions are only estimates, leading to the possibility that legal rulings and societal pressures may cause underreporting. The Asian American, Native Hawaiian, and Pacific Islander communities in the United States also suffer from a lack of abortion access in addition to unique health disparities and barriers to reproductive health care. As difficulties in abortion access increases due to the Supreme Court decision in Dobbs v. Jackson Women's Health Organization, some may seek or even prefer self-managed abortion through traditional methods that have been passed down in their communities. Midwives and other health care providers may then be contacted during this process. This narrative review provides an overview of the literature on the use of botanicals, herbs, and traditional medicines used for self-managed abortion, specifically in Asia, Hawai‧i, and other Pacific Islands. Their implications for practice for providers in the United States and further opportunities for research are also presented.

A Qualitative Study on Preventing Gestational Diabetes in Native Hawaiian and Pacific Islander Adolescent Females: Perspectives from an Expert Panel of Health Care Providers.

The authors examined perspectives of health care providers (HCPs) who serve Native Hawaiian and Pacific Islander (NH/PI) adolescents to inform the adaption of an existing American Indian and Alaska Native-specific gestational diabetes mellitus (GDM) risk reduction and preconception counseling program entitled Stopping GDM, for NH/PI adolescents. Hawai'i-based HCPs (n=14) who care for NH/PI adolescent females volunteered for this expert panel focus group study. These HCP participants served as an expert panel specific to their experiences in providing primary care and reproductive health care/family planning, and their perspectives regarding GDM risk reduction for NH adolescents. Several key themes emerged from these expert panel focus groups: (1) importance of multi-generational family involvement and support; (2) need to address the social determinants of health; (3) strengths-based strategies and recommendations to engage adolescents in a preconception counseling and GDM risk-reduction education program. Findings will inform the adaptation of Stopping GDM into a more holistic, multi-level, strengths-based, culturally tailored GDM risk reduction intervention that fosters empowerment and builds on the resilience of NH/PI communities.

Effects of Prophylactic Oxytocin on Bleeding Outcomes in Women Undergoing Dilation and Evacuation: A Randomized Controlled Trial.

OBJECTIVE: To estimate whether routine use of intravenous oxytocin decreases the frequency of interventions to control excess blood loss during dilation and evacuation (D&E). METHODS: In this multisite, randomized, double-blind, placebo-controlled trial, women undergoing D&E at 18-24 weeks of gestation received 30 units of oxytocin in 500 mL of intravenous fluid or 500 mL of intravenous fluid alone initiated on speculum placement. The primary outcome was the frequency of interventions to control excess bleeding. A sample size of 75 patients per group was needed to detect a 15% decrease in intervention from 20% to 5% with 80% power and two-sided alpha 0.05. Secondary outcomes included measured blood loss, complications, procedure duration, postoperative pain, and patient satisfaction. RESULTS: From November 2014 to February 2018, we screened 337 women and randomized 160 to receive prophylactic oxytocin (n=82) or placebo (n=78). Demographic characteristics were similar between groups. The frequency of interventions for bleeding, our primary outcome, was 7.3% in the oxytocin group vs 16.7% in the placebo group, difference of 9.4% (95% CI -21.0% to 1.9%). Interventions primarily included uterine massage and uterotonic administration. Among our secondary outcomes, median measured blood loss was lower in the oxytocin group at 152 (interquartile range 98-235) mL vs 317 (interquartile range 168-464) mL (95% CI 71.6-181.5). Frequency of hemorrhage, defined as blood loss of 500 mL or more and 1,000 mL or more, was lower in the oxytocin group at 3.7% vs 21.8%, difference of 18% (95% CI -29 to -6.9%) and 1.2% vs 10.3%, difference of 9.0% (95% CI -17 to -0.7%), respectively. Procedures were shorter in the oxytocin group at a median of 11.0 (interquartile range 8.0-14.0) vs 13.5 (interquartile range 10.0-19.0) minutes in the placebo group (95% CI 1.0-4.0). We found no differences in the frequency of nonhemorrhage complications, pain scores, or satisfaction scores between groups. CONCLUSION: Prophylactic use of oxytocin during D&E at 18-24 weeks of gestation did not decrease the frequency of interventions to control bleeding. However, oxytocin did decrease blood loss and frequency of hemorrhage. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov, www.clinicaltrials.gov, NCT02083809.

Umbilical cord blood and placental mercury, selenium and selenoprotein expression in relation to maternal fish consumption.

Seafood is an important source of nutrients for fetal neurodevelopment. Most individuals are exposed to the toxic element mercury through seafood. Due to the neurotoxic effects of mercury, United States government agencies recommend no more than 340g (12oz) per week of seafood consumption during pregnancy. However, recent studies have shown that selenium, also abundant in seafood, can have protective effects against mercury toxicity. In this study, we analyzed mercury and selenium levels and selenoprotein mRNA, protein, and activity in placenta of a cohort of women in Hawaii in relation to maternal seafood consumption assessed with dietary surveys. Fish consumption resulted in differences in mercury levels in placenta and cord blood. When taken as a group, those who consumed no fish exhibited the lowest mercury levels in placenta and cord blood. However, there were numerous individuals who either had higher mercury with no fish consumption or lower mercury with high fish consumption, indicating a lack of correlation. Placental expression of selenoprotein mRNAs, proteins and enzyme activity was not statistically different in any region among the different dietary groups. While the absence of seafood consumption correlates with lower average placental and cord blood mercury levels, no strong correlations were seen between seafood consumption or its absence and the levels of either selenoproteins or selenoenzyme activity.

Vitamin D deficiency in cord plasma from multiethnic subjects living in the tropics.

BACKGROUND: Vitamin D deficiency is commonly reported in high-latitude areas and in dark-pigmented individuals. However, nothing is known about vitamin D in cord blood from multiethnic subjects living in the tropics. OBJECTIVE: Our study objective was to determine the prevalence of vitamin D deficiency in summer and winter in cord blood from multiethnic individuals in Hawai'i where sufficient sun irradiance occurs year-round for cutaneous vitamin D production. METHODS: 25-Hydroxyvitamin D (25(OH)D) levels were quantified by enzyme immunoassay in 100 cord plasma samples from apparently healthy full-term newborns and their mothers. Stratification was performed by birth season and ethnicity. RESULTS: Mean 25(OH)D levels were 24.5 ng/mL (9.1-68.3 ng/mL). Overall, 28% of samples were vitamin D deficient (<20 ng/mL) and 50% were insufficient (20-30 ng/mL). 25(OH)D levels (ng/mL) were highest in Caucasians (30.5, n = 19), followed by Asians (25.1, n = 43), Hispanics (21.5, n = 3), Pacific Islanders (20.0, n = 25), and African Americans (19.6, n = 2). Differences among groups were significant (p = 0.008). Cord plasmas from summer versus winter were higher overall (p = 0.001) and among Asians (p = 0.0003). Seasonal changes were correlated with sun irradiance overall (r = 0.43, p = 0.0001), among Caucasians (r = 0.45, p = 0.05), and among Asians (r = 0.45, p = 0.0001). CONCLUSION: Our results suggest that prenatal supplement recommendations of 400 IU vitamin D/day do not protect against vitamin D deficiency, even in subjects living in the tropics where ample sun irradiance exists for cutaneous vitamin D synthesis. The high prevalence of vitamin D deficiency we observed emphasizes the necessity for regular 25(OH)D monitoring, particularly during pregnancy and lactation, in dark-pigmented individuals, and during winter months.