Background: Anti-Müllerian hormone (AMH) is produced by Sertoli cells of the testes and granulosa cells of the ovary. There are limited prospective longitudinal data assessing AMH concentrations throughout childhood in both sexes.
Objective: This study aimed to examine AMH throughout childhood with particular reference to the relationship of AMH to pubertal development in both sexes.
Design: This is a prospective longitudinal non-intervention cohort study with annual sampling for participants aged 5-14 years.
Setting: Community cohort study.
Participants: A total of 307 healthy children (170 boys) recruited at 5 years from randomly selected schools in Plymouth, UK, participated in this study. Data sets are complete in 76% of the children at 14 years of age.
Main Outcome Measure(s): Annual measures of serum AMH, follicle stimulating hormone (FSH) and luteinising hormone (LH), Tanner stage (TS).
Results: Boys: AMH was stable from 5 to 7 years, increased slightly from 8 to 10 years, then declined at TS2. This decline was preceded by rising FSH and the appearance of LH. AMH correlated inversely with gonadotrophic hormones during puberty. Girls: AMH increased slightly between 6 and 10 years, peaking during the final prepubertal year before returning to near baseline levels at TS3. Inverse correlations between AMH and FSH were apparent during the prepubertal years.
Conclusions: Our longitudinal data clarified the development of individual AMH levels over a 10-year period. We described modest late prepubertal peaks in both boys and girls, and confirmed the pubertal decline in boys. The inverse association of AMH with gonadotrophins in young females supports its role as a marker of ovarian function, while the precise role for AMH in relation to testicular function in young males remains unclear.
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http://dx.doi.org/10.1515/jpem-2014-0517 | DOI Listing |
Oral Maxillofac Surg
January 2025
Department of Orthodontics and Craniofacial Biology, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands.
Purpose: This study aimed to evaluate the dental and skeletal stability one year after Miniscrew-Assisted Rapid Palatal Expansion (MARPE) by using 3D image data.
Methods: Patients with transverse maxillary deficiency from the age of 16 onwards were enrolled consecutively in this prospective longitudinal cohort study. The MARPE appliance was digitally and individually designed and fabricated.
Alzheimers Dement
December 2024
University of Milano - Bicocca, Monza, Monza, Italy, iCAB International Network, University of Milano - Bicocca, Monza, Italy.
ARIA-E/H (amyloid-related imaging abnormalities-Edema/Hemorrhage) is an umbrella term that defines the radiographic appearance of MRI images abnormality during treatments with Aβ-lowering monoclonal antibodies (mAbs) for Alzheimer's disease immunotherapy. Today, it is well-recognized that ARIA-E events can also occur spontaneously in patients with cerebral amyloid angiopathy-related inflammation (CAA-ri), a rare autoimmune encephalopathy associated with raised cerebrospinal fluid (CSF) concentrations of spontaneous auto-antibodies against Aβ (aAbs). In this framework, the last years of research and experience of the iCAB international Network generated an increased consensus that therapy-induced ARIA is the iatrogenic manifestation of CAA-ri.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
Background: Endogenous estrogen history across the life course may be associated with better cognitive maintenance. Few large longitudinal studies have evaluated this prospectively, and results have been inconsistent. We assessed the association of reproductive span, an indicator of endogenous estrogen history, with cognitive change in older women.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Hospital del Mar Research Institute (IMIM), Barcelona, Spain.
Background: Subjective Cognitive Decline (SCD) may represent the initial symptom of Alzheimer's disease (AD), but SCD may be absent and/or unrelated to actual cognitive decline. Objective Subtle Cognitive Decline (obj-SCD) can be identified through longitudinal standardized neuropsychological tests in individuals not yet meeting criteria for Mild Cognitive Impairment (MCI). We argue that the relationship between SCD and obj-SCD might help to inform clinical and research criteria in pre-MCI stages.
View Article and Find Full Text PDFBackground: Cognitive dysfunction is central to clinicopathological models of Alzheimer's disease (AD). While AD prospective studies assess similar cognitive domains, the neuropsychological tests used vary between studies, limiting potential for aggregation. We examined a machine learning (ML) data harmonisation method for neuropsychological test data to develop a harmonised PACC score for the Alzheimer's Dementia Onset and Progression in International Cohorts (ADOPIC) consortium.
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