scholarly journals Ovine prenatal growth restriction impacts glucose metabolism and body composition throughout life in both sexes

Reproduction ◽  
2018 ◽  
Vol 156 (2) ◽  
pp. 103-119 ◽  
Author(s):  
Jacqueline M Wallace ◽  
John S Milne ◽  
Raymond P Aitken ◽  
Graham W Horgan ◽  
Clare L Adam

Low birthweight is a risk factor for later adverse health. Here the impact of placentally mediated prenatal growth restriction followed by postnatal nutrient abundance on growth, glucose metabolism and body composition was assessed in both sexes at key stages from birth to mid-adult life. Singleton-bearing adolescent dams were fed control or high nutrient intakes to induce normal or growth-restricted pregnancies respectively. Restricted lambs had ~40% reduced birthweight. Fractional growth rates were higher in restricted lambs of both sexes predominantly during suckling/juvenile phases. Thereafter, rates and patterns of growth differed by sex. Absolute catch-up was not achieved and restricted offspring had modestly reduced weight and stature at mid-adulthood necropsy (~109 weeks). Dual-energy X-ray absorptiometry revealed lower bone mineral density in restricted vs normal lambs at 11, 41, 64 and 107 weeks, with males > females from 41 weeks onwards. Body fat percentage was higher in females vs males throughout, in restricted vs normal lambs at weaning (both sexes) and in restricted vs normal females at mid-adulthood. Insulin secretion after glucose challenge was greater in restricted vs normal of both sexes at 7 weeks and in restricted males at 32 weeks. In both sexes, fasting glucose concentrations were greater in restricted offspring across the life course, while glucose area under the curve after challenge was higher in restricted offspring at 32, 60, 85 and 106 weeks, indicative of persistent glucose intolerance. Therefore, prenatal growth restriction has negative consequences for body composition and metabolism throughout the life course with the effects modulated by sex differences in postnatal growth rates, fat deposition and bone mass accrual.

2021 ◽  
pp. e1-e9
Author(s):  
Angela K. Shen ◽  
Cristi A. Bramer ◽  
Lynsey M. Kimmins ◽  
Robert Swanson ◽  
Patricia Vranesich ◽  
...  

Objectives. To assess the impact of the COVID-19 pandemic on immunization services across the life course. Methods. In this retrospective study, we used Michigan immunization registry data from 2018 through September 2020 to assess the number of vaccine doses administered, number of sites providing immunization services to the Vaccines for Children population, provider location types that administer adult vaccines, and vaccination coverage for children. Results. Of 12 004 384 individual vaccine doses assessed, 48.6%, 15.6%, and 35.8% were administered to children (aged 0–8 years), adolescents (aged 9–18 years), and adults (aged 19–105 years), respectively. Doses administered overall decreased beginning in February 2020, with peak declines observed in April 2020 (63.3%). Overall decreases in adult doses were observed in all settings except obstetrics and gynecology provider offices and pharmacies. Local health departments reported a 66.4% decrease in doses reported. For children, the total number of sites administering pediatric vaccines decreased while childhood vaccination coverage decreased 4.4% overall and 5.8% in Medicaid-enrolled children. Conclusions. The critical challenge is to return to prepandemic levels of vaccine doses administered as well as to catch up individuals for vaccinations missed. (Am J Public Health. Published online ahead of print October 7, 2021: e1–e9. https://doi.org/10.2105/AJPH.2021.306474 )


2020 ◽  
Vol 4 (Supplement_1) ◽  
Author(s):  
Ronald S Swerdloff ◽  
John K Amory ◽  
Adrian S Dobs ◽  
Christina Wang ◽  
Theodore M Danoff ◽  
...  

Abstract Introduction and Objective: A new, first-in-class oral testosterone (T) replacement therapy product [T-undecanoate (TU) capsules] was recently approved by FDA to treat hypogonadal men. Clinical trials were conducted to evaluate, in part, the impact of oral TU therapy on important secondary efficacy endpoints: Psychosexual and/or general well-being (Trial I and II); and body composition and bone mineral density (BMD) (Trial II). Subject and Methods: Hypogonadal men (AM serum T ≤ 300 ng/dL) age 18 to 65 (Trial I) or 75 years old (Trial II) were randomized into open-label, active-comparator (T-gel/solution) trials. Subjects received: Trial 1: Oral TU (n=166) or a topical T solution (n=55) for 4-6 mos.; or Trial II: Oral TU (n=162) or T-gel (n=163) for 12 mos. The starting oral TU dose (with food) was 237 mg, BID in Trial I and 316 mg, BID in Trial II; up to 2 dose-titration opportunities were available to achieve eugonadal T concentrations (assayed by LC-MS/MS). In Trial I, Psychosexual Daily Questionnaires (PDQ) were completed by study subjects for 7 days at baseline and prior to final clinic visit (Day 105-180). In Trial II, the SF-36 well-being questionnaire was completed on Days 0, 30, 90, 180, 270 and 365 and PDQs were completed for 7 days prior to clinic visits on these same days. In Trial II body composition and BMD was assessed by DEXA scan on Days 0, 180 and 365. Safety was monitored by physical exam and standard clinical lab tests. Results: Mean serum T in response to oral TU was 489 ± 155 ng/dL (mean ± SD) (Trial I) and 628 ± 342 ng/dL (Trial II); 84% of subjects in each trial achieved mean T concentrations in the eugonadal range. Statistically significant mean changes from baseline (p<0.0001) for most SF-36 well-being parameters were observed in both oral TU and T-gel groups. Psychosexual questionnaire results also demonstrated statistically significant improvement over baseline (p<0.0001) in most parameters at Day 30 and all timepoints thereafter in both trials. On Days 180 and 365 (v. baseline) oral TU was associated with a significant reduction in fat mass [-1.92 ± 2.79 (SD) and -2.4 ± 3.6 kg, respectively] (p<0.0001) and an increase in lean body mass [+2.87 ± 2.73 and +3.15 ± 2.69 kg, respectively] (p<0.0001). Oral TU increased mean BMD over baseline on Days 180 and 365 in spine [+0.013 ± 0.035 and +0.018 ± 0.042 g/cm2, respectively (p<0.0001)] and hip [+0.006 ± 0.019 and +0.012 ± 0.023 g/cm2, respectively (p<0.0001)]. Oral TU exhibited a safety profile consistent with commonly prescribed topical T-comparators. Modest increases in cuff sBP of 2.8 ± 11.84 (SD) mm Hg and 1.8 ± 10.76 mm Hg were observed in Trial I for both oral TU and the comparator T-solution. Conclusions: Treatment of hypogonadal men with oral TU yielded circulating mean T concentrations in the mid-eugonadal range and significantly improved psychosexual, general well-being, body composition and BMD parameters comparable to transdermal T administration.


Author(s):  
Jenell L. S. Wittmer ◽  
Cort W. Rudolph

There are many aspects of diversity that impact career transitions over the life course. Whereas traditional conceptualizations of career stages emphasize a clear career path for the majority of people, modern career transitions are better characterized by both the multitude and variety of potential mobility paths. Modern career trajectories have also been linked to early developmental activities, which are similarly related to increases in diversity and other societal changes. This chapter discusses the impact of different forms of diversity on career transitions from both psychological/developmental and sociological life course perspectives, as well from a dynamic perspective where one's career transitions are dictated by lesser-planned socio-contextual and personal circumstances. The authors conclude this discussion by outlining some trends that are likely to influence career development in the future, including suggestions for future research.


2018 ◽  
Vol 4 ◽  
pp. 233372141879402 ◽  
Author(s):  
Grace A. Noppert ◽  
Candace S. Brown ◽  
Marianne Chanti-Ketterl ◽  
Katherine S. Hall ◽  
L. Kristin Newby ◽  
...  

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S128-S129
Author(s):  
Melanie S Hill ◽  
James E Hill ◽  
Stephanie Richardson ◽  
Jessica Brown ◽  
Jeremy B Yorgason ◽  
...  

Abstract Identity scholars have suggested that having a unified sense of past, present, and future is related to positive well-being outcomes (Whitbourne, Sneed & Skultety, 2009). One’s occupation can have a profound influence on an individual’s identity throughout the life course (Nazar & van der Heijden, 2012). Research has looked at career mobility among younger age groups (Baiyun, Ramkissoon, Greenwood, & Hoyte, 2018); however, less is known about the impact of career stability later in life. Consistency in career choice over the life course may have positive outcomes down the line as career becomes part of an individual's identity. The current study uses the Life and Family Legacies dataset, a longitudinal state-representative sample of 3,348, to examine individual’s careers at three points in the life course: high school (projected career choice), early adulthood, and later life. Results revealed that a match of desired career in high school and actual career in early adulthood was not predictive of life satisfaction or depressive symptoms in later life. However, a match of career in early adulthood and later life was significantly related to better life satisfaction and less depressive symptoms, which was explained through higher levels of job satisfaction. This study highlights the importance of acquiring and maintaining a career that is fulfilling to the individual over the course of early adulthood to later life.


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