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The primary regulator of testicular function is the gonadotropin-releasing hormone (GnRH). This hormone is secreted in a pulsatile manner by hypothalamic neurons. GnRH stimulates the synthesis and secretion of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the anterior pituitary gland. LH stimulates the synthesis of testosterone (T) after binding to specific receptors on Leyd
Introduction: Postnatal pesticide exposure and its impact on executive functioning (EF) in children and adolescents remains underexplored, particularly in African agricultural contexts. This study investigated associations between urinary pesticide biomarkers and EF in the Child health Agricultural Pesticide study in South Africa (CapSA). Methods: Data from 445 participants (mean age: 10.6 years;
Background: Early-life growth adversity is important to later-life health, but precision assessment in adulthood is challenging. We evaluated whether the difference between attained and genotype-predicted adult height (“height-GaP”) would associate with prospectively ascertained early-life growth adversity and later-life all-cause and cardiovascular mortality. Methods: Data were first analyzed fro
BackgroundOsteocalcin is a bone-specific protein involving many physiological processes, primarily bone turnover. Also closely related to the musculoskeletal system is the frailty syndrome.AimTo investigate if circulating osteocalcin levels and frailty are associated in the old, and in addition, if the presumed association is mediated through alterations in bone.Methods999 community-dwelling women
Objectives. SLE is a systemic autoimmune disease with an annual incidence of 3.8 per 100 000. Several pathogenic mechanisms are believed to be operating in SLE, including an impaired clearance of apoptotic cells, activation of the type I IFN pathway and generation of autoimmune leucocytes. Growth arrest-specific protein 6 (Gas6) and its receptor Axl are known to regulate inflammation and may be im
Introduction Assessing work ability and sickness certification are considered problematic by many physicians and education and implementation of guidelines to improve knowledge and skills has been requested. Our aim was to study the association between such interventions and physicians' sick-listing practices. Methods A web-based questionnaire was sent to all physicians working in primary care, ps
BACKGROUND: The escalating global epidemic of obesity is of worldwide concern because of its association with several chronic diseases and premature mortality. Some subgroups seem to be more affected than others. The aim of this study was to examine whether the mean BMI (adjusted for age) and the prevalence of obesity (adjusted for all the explanatory variables) changed between 2000/01 and 2004/05
Objectives. Studies reporting cancer risk after PMR and GCA are few, but it remains an issue of both concern and controversy. We examined the overall and specific cancer risks among Swedish subjects following hospitalization for these diseases. Methods. PMR and GCA patients were identified from the Swedish Hospital Discharge Register and by linking them with the Cancer Registry. Follow-up of patie
Objective This study examines whether neighbourhood deprivation increases the risk of giving birth to a small for gestational age (SGA) infant, after accounting for individual-level maternal socioeconomic characteristics. Design An open cohort of women, aged 20-44 years, was followed from 1 January 1992 through 31 December 2004 for first singleton births. The women's residential addresses during t
Clinicians may record patients presenting with osteoarthritis (OA) symptoms with joint pain rather than an OA diagnosis. This may have implications for OA research studies and patient care. The objective was to assess whether older adults recorded with joint pain are similar to those with a recorded OA diagnosis.
OBJECTIVES: Telomeres are critical to maintain the integrity of the chromosomes, and telomere abnormalities are important features of carcinogenesis. Telomere length differs among individuals due to genetic and environmental factors. Aiming to examine the relationship between DNA-damaging agents and average telomere length in peripheral blood, we conducted a cross-sectional study among 157 workers
To estimate incremental costs for patients with psoriasis/psoriatic arthritis (PsO/PsA) compared to population-based referents free from PsO/PsA and estimate costs attributable specifically to PsO/PsA.
BACKGROUND: Practically all data on familial risk in ovarian and other cancers are based on incident cancer, whereas familiality in cancer mortality is largely unknown. If fatal forms of cancer are a highly familial subtype, then familial risk for mortality may exceed that of incidence, which is relevant for clinical decision making and counseling. METHODS: Ovarian cancer patients in the nationwid
The observation in the 1940s, that children to mothers having rubella in the first part of the pregnancy experienced elevated health risks in later life led to a growing interest into whether fetal exposure to other – less severe – diseases could cause health problems as well. Epidemiological studies of the fetal origins of later life health that followed found that, while this indeed was the case
This chapter examines the role of economic factors in first marriage in seven locations in pre-industrial Europe and Asia using a two-generation theory, which also takes socioeconomic class into account. In these settings, the household provided a major welfare function for its members. Access to land was of considerable importance, but so was the prevalent family system – whether a married couple
Properties of nanostructures realized by bottom-up techniques are often different from their bulk counterparts.(1) Here we present a study of a nano-Schottky contact formed at the interface between a gold catalytic particle and an epitaxially grown GaxIn1-xAs/InAs nanowire. Selective electrical connections formed to the catalytic particle on one side and to the In As segment on the other side allo
