ISSN 1662-4009 (online)

ey0021.3-12 | Thyroid Autoimmunity | ESPEYB21

3.12. The genetics of Graves' disease

Grixti Lydia , Lane Laura C , Pearce Simon H

Brief Summary: This article provides an in-depth review of the genetic factors contributing to Graves’ disease (GD), the most common cause of hyperthyroidism. The authors explain that GD has a strong genetic component, with genetic factors accounting for 60-80% of the risk of developing this disease. The review traces the progress of genetic studies from initial candidate gene studies to genome-wide association studies that have identified over 80 susceptibility loci. Key...

ey0015.6-13 | Disorders of Sex Development: New paradigm | ESPEYB15

6.13 A Novel Homozygous Missense Mutation in the FU-CRD2 Domain of the R-spondin1 Gene Associated with Familial 46,XX DSD

Y Naasse , A Bakhchane , H Charoute , F Jennane , J Bignon-Topalovic , A Malki , A Bashamboo , A Barakat , H Rouba , K McElreavey

To read the full abstract: Sex Dev. 2017;11(5-6):269-274[Comments on 6.11, 6.12 and 6.13] Evidence for factors necessary for female sexual development are presented in the above 3 publications. Studies of 46,XX DSD individuals show compiling evidence for factors necessary for female development and to counteract...

ey0020.9-5 | Advances in Understanding Central Weight Regulation and Behaviour | ESPEYB20

9.5. A synaptic amplifier of hunger for regaining body weight in the hypothalamus

K Grzelka , H Wilhelms , S Dodt , ML Dreisow , JC Madara , SJ Walker , C Wu , D Wang , BB Lowell , H Fenselau

Brief summary: Grzelka et al. identified a hypothalamic circuit that regulates regain of body weight after weight loss.Body weight is one of the most regulated variables of our body, which is most likely due to the evolutionary history of times when access to food was scarce and volatile. Weight loss triggers a strong counterregulatory response. It increases the hunger drive and greatly increases the reward value of food, making it more difficul...

ey0019.6-7 | Basic and Genetic Research of DSD | ESPEYB19

6.7. MAP3K1 variant causes hyperactivation of Wnt4/[beta]-catenin/FOXL2 signaling contributing to 46,XY disorders/differences of sex development

H Chen , Q Chen , Y Zhu , K Yuan , H Li , B Zhang , Z Jia , H Zhou , M Fan , Y Qiu , Q Zhuang , Z Lei , M Li , W Huang , L Liang , Q Yan , C Wang

Front Genet. 2022 Mar 3;13:736988. PMID: 35309143, doi: 10.3389/fgene.2022.736988.Brief Summary: This molecular study highlights a novel mechanism of action of Mitogen-activated protein kinase kinase kinase 1 (MAP3K1) in the development of testicular dysgenesis.MAP3K1 is one of the most common genes that has been identified to cause 46, XY DSD and variants are attribu...

ey0017.4-3 | Important for clinical practice | ESPEYB17

4.3. IGF2 Mutations

Y Masunaga , T Inoue , K Yamoto , Y Fujisawa , Y Sato , Y Kawashima-Sonoyama , N Morisada , K Iijima , Y Ohata , N Namba , H Suzumura , R Kuribayashi , Y Yamaguchi , H Yoshihashi , M Fukami , H Saitsu , M Kagami , T Ogata

To read the full abstract: J Clin Endocrinol Metab. 2020 Jan 1;105(1):dgz034.Using different genetic approaches, the authors identified 5 novel pathogenic or likely pathogenic IGF2 gene variants in Japanese patients who underwent genetic testing for the variable associations of multiple congenital anomalies such as mental retardation, Silver-Russell syndrome (SRS), disorders of sex development (DSD), ectrodactyly (split hand/foot malfor...

ey0018.10-7 | (1) | ESPEYB18

10.7. Circulating metabolites in progression to islet autoimmunity and type 1 diabetes

S Lamichhane , E Kemppainen , K Trošt , H Siljander , H Hyoty , J Ilonen , J Toppari , R Veijola , T Hyotylainen , M Knip , M Orešič

Diabetologia. 2019;62(12):2287–2297. doi: 10.1007/s00125-019-04980-0This study identified different circulatory metabolite profiles in children who subsequently progress to T1D compared to children who progress to islet autoimmunity but not T1D, and antibody-negative control children.In addition to altered T cell immunity and autoantibody appearance, metaboli...

ey0019.8-2 | New Mechanisms | ESPEYB19

8.2. Corticosterone induces discrete epigenetic signatures in the dorsal and ventral hippocampus that depend upon sex and genotype: focus on methylated NR3C1 gene

SG Caradonna , NR Einhorn , V Saudagar , H Khalil , GH Petty , A Lihagen , C LeFloch , FS Lee , H Akil , A Guidotti , BS McEwen , E Gatta , J Marrocco

Transl Psychiatry. 2022; 12(1): 109. PMID: 35296634 https://pubmed.ncbi.nlm.nih.gov/35296634/Brief Summary: This mouse study identified sex and genotype-dependent effects of oral corticosterone on behavioral and physiological outcomes as well as on gene expression and epigenetics in hippocampal subregions.Glucocorticoids exert their effects by binding to glucocorticoid...

ey0019.8-4 | Important for Clinical Practice | ESPEYB19

8.4. A multi-classifier system to identify and subtype congenital adrenal hyperplasia based on circulating steroid hormones

L Ye , Z Zhao , H Ren , W Wang , W Zhou , S Zheng , R Han , J Zhang , H Li , Z Wan , C Tang , S Sun , W Wang , G Ning

J Clin Endocrinol Metab. 2022; dgac271. PMID: 35512387 https://pubmed.ncbi.nlm.nih.gov/35512387/Brief Summary: This study, in a series of independent patient cohorts, developed and validated a clinical score, based on the circulating concentrations of 13 major steroid hormones, to detect and subtype Congenital Adrenal Hyperplasia (CAH).Steroidogenesis is a complex proc...

ey0016.5-19 | Basic Science - Mineral Metabolism | ESPEYB16

5.19. Eldecalcitol causes FGF23 resistance for Pi reabsorption and improves rachitic bone phenotypes in the male Hyp mouse

I Kaneko , H Segawa , K Ikuta , A Hanazaki , T Fujii , S Tatsumi , S Kido , T Hasegawa , N Amizuka , H Saito , KI Miyamoto

Abstract: Endocrinology, Volume 159, Issue 7, July 2018, Pages 2741–2758In brief: Eldecalcitol, a long acting active vitamin D3 analogue with lower affinity for vitamin D receptor and resistance to inactivation by vitamin D 24-hydroxylase, causes FGF23 resistance. This leads to complete restoration of renal phosphate transport and NaPi-2a protein levels and improves ra...

ey0016.8-14 | New Hope | ESPEYB16

8.14. A report on state-wide implementation of newborn screening for X-linked adrenoleukodystrophy

K Wiens , SA Berry , H Choi , A Gaviglio , A Gupta , A Hietala , D Kenney-Jung , T Lund , W Miller , EI Pierpont , G Raymond , H Winslow , HA Zierhut , PJ Orchard

To read the full abstract: Am J Med Genet A. 2019; 179(7):1205–1213.X-linked adrenoleukodystrophy (X-ALD) is the most common peroxisomal disorder, with an estimated incidence in the USA of ~1:17,000 all births (male and female) and 1:21,000 male births. X-ALD is caused by mutations in the X chromosome gene ABCD1, which encodes the peroxisomal membrane protein, ATP-bin...