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Brito VN, Canton APM, Seraphim CE, Abreu AP, Macedo DB, Mendonca BB, Kaiser UB, Argente J, Latronico AC. The Congenital and Acquired Mechanisms Implicated in the Etiology of Central Precocious Puberty. Endocr Rev 2023; 44:193-221. [PMID: 35930274 PMCID: PMC9985412 DOI: 10.1210/endrev/bnac020] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Indexed: 01/20/2023]
Abstract
The etiology of central precocious puberty (CPP) is multiple and heterogeneous, including congenital and acquired causes that can be associated with structural or functional brain alterations. All causes of CPP culminate in the premature pulsatile secretion of hypothalamic GnRH and, consequently, in the premature reactivation of hypothalamic-pituitary-gonadal axis. The activation of excitatory factors or suppression of inhibitory factors during childhood represent the 2 major mechanisms of CPP, revealing a delicate balance of these opposing neuronal pathways. Hypothalamic hamartoma (HH) is the most well-known congenital cause of CPP with central nervous system abnormalities. Several mechanisms by which hamartoma causes CPP have been proposed, including an anatomical connection to the anterior hypothalamus, autonomous neuroendocrine activity in GnRH neurons, trophic factors secreted by HH, and mechanical pressure applied to the hypothalamus. The importance of genetic and/or epigenetic factors in the underlying mechanisms of CPP has grown significantly in the last decade, as demonstrated by the evidence of genetic abnormalities in hypothalamic structural lesions (eg, hamartomas, gliomas), syndromic disorders associated with CPP (Temple, Prader-Willi, Silver-Russell, and Rett syndromes), and isolated CPP from monogenic defects (MKRN3 and DLK1 loss-of-function mutations). Genetic and epigenetic discoveries involving the etiology of CPP have had influence on the diagnosis and familial counseling providing bases for potential prevention of premature sexual development and new treatment targets in the future. Global preventive actions inducing healthy lifestyle habits and less exposure to endocrine-disrupting chemicals during the lifespan are desirable because they are potentially associated with CPP.
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Affiliation(s)
- Vinicius N Brito
- Discipline of Endocrinology & Metabolism, Department of Internal
Medicine, University of Sao Paulo Medical School, University of Sao
Paulo, Sao Paulo 01246 903, Brazil
| | - Ana P M Canton
- Discipline of Endocrinology & Metabolism, Department of Internal
Medicine, University of Sao Paulo Medical School, University of Sao
Paulo, Sao Paulo 01246 903, Brazil
| | - Carlos Eduardo Seraphim
- Discipline of Endocrinology & Metabolism, Department of Internal
Medicine, University of Sao Paulo Medical School, University of Sao
Paulo, Sao Paulo 01246 903, Brazil
| | - Ana Paula Abreu
- Division of Endocrinology, Diabetes and Hypertension, Department of
Medicine, Brigham and Women’s Hospital, Harvard Medical School,
Boston, MA 02115, USA
| | - Delanie B Macedo
- Discipline of Endocrinology & Metabolism, Department of Internal
Medicine, University of Sao Paulo Medical School, University of Sao
Paulo, Sao Paulo 01246 903, Brazil
- Division of Endocrinology, Diabetes and Hypertension, Department of
Medicine, Brigham and Women’s Hospital, Harvard Medical School,
Boston, MA 02115, USA
- Núcleo de Atenção Médica Integrada, Centro de Ciências da Saúde,
Universidade de Fortaleza, Fortaleza 60811 905,
Brazil
| | - Berenice B Mendonca
- Discipline of Endocrinology & Metabolism, Department of Internal
Medicine, University of Sao Paulo Medical School, University of Sao
Paulo, Sao Paulo 01246 903, Brazil
| | - Ursula B Kaiser
- Division of Endocrinology, Diabetes and Hypertension, Department of
Medicine, Brigham and Women’s Hospital, Harvard Medical School,
Boston, MA 02115, USA
| | - Jesús Argente
- Hospital Infantil Universitario Niño Jesús, Department of Endocrinology and
Department of Pediatrics, Universidad Autónoma de Madrid, Spanish PUBERE Registry,
CIBER of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III, IMDEA
Institute, Madrid 28009, Spain
| | - Ana Claudia Latronico
- Discipline of Endocrinology & Metabolism, Department of Internal
Medicine, University of Sao Paulo Medical School, University of Sao
Paulo, Sao Paulo 01246 903, Brazil
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Abstract
PURPOSE OF REVIEW This paper reviews how sleep is impacted in patients with Prader-Willi syndrome (PWS), focusing on sleep-related breathing disturbances and excessive daytime sleepiness (EDS). RECENT FINDINGS Hypothalamic dysfunction may underlie several aspects of the PWS phenotype. Central sleep apnea (CSA) can persist beyond infancy. Nocturnal hypoventilation is common and may occur without central or obstructive sleep apnea (OSA). Adenotonsillectomy, a mainstay of OSA treatment, may cause velopharyngeal insufficiency. Growth hormone (GH) is considered safe, but close surveillance for OSA remains important. Cardiac autonomic dysfunction occurs during slow wave sleep and may increase the risk of cardiovascular events. EDS and narcolepsy are also common. Modafinil and pitolisant are treatment options currently being studied. Sleep disorders are prevalent in individuals with PWS. Sleep-related breathing disorders present as CSA in infancy and later in life as OSA and hypoventilation. GH therapy has improved the clinical outcomes of patients with PWS, but close surveillance and treatment for OSA is recommended. EDS can persist even after sleep-related breathing disorders are treated, and some individuals may even develop narcolepsy. Early recognition and treatment of sleep-related disorders may prevent morbidity and result in improved survival of patients with PWS.
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Salvatore M, Torreri P, Grugni G, Rocchetti A, Maghnie M, Patti G, Crinò A, Elia M, Greco D, Romano C, Franzese A, Mozzillo E, Colao A, Pugliese G, Pagotto U, Lo Preiato V, Scarano E, Schiavariello C, Tornese G, Fintini D, Bocchini S, Osimani S, De Sanctis L, Sacco M, Rutigliano I, Delvecchio M, Faienza MF, Wasniewska M, Corica D, Stagi S, Guazzarotti L, Maffei P, Dassie F, Taruscio D. The Italian registry for patients with Prader-Willi syndrome. Orphanet J Rare Dis 2023; 18:28. [PMID: 36793093 PMCID: PMC9930253 DOI: 10.1186/s13023-023-02633-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 02/06/2023] [Indexed: 02/17/2023] Open
Abstract
BACKGROUND Prader-Willi syndrome (PWS) is a rare and complex genetic disease, with numerous implications on metabolic, endocrine, neuropsychomotor systems, and with behavioural and intellectual disorders. Rare disease patient registries are important scientific tools (1) to collect clinical and epidemiologic data, (2) to assess the clinical management including the diagnostic delay, (3) to improve patients' care and (4) to foster research to identify new therapeutic solutions. The European Union has recommended the implementation and use of registries and databases. The main aims of this paper are to describe the process of setting up the Italian PWS register, and to illustrate our preliminary results. MATERIALS AND METHODS The Italian PWS registry was established in 2019 with the aims (1) to describe the natural history of the disease, (2) to determine clinical effectiveness of health care services, (3) to measure and monitor quality of care of patients. Information from six different variables are included and collected into this registry: demographics, diagnosis and genetics, patient status, therapy, quality of life and mortality. RESULTS A total of 165 patients (50.3% female vs 49.7% male) were included into Italian PWS registry in 2019-2020 period. Average age at genetic diagnosis was 4.6 years; 45.4% of patients was less than 17 years old aged, while the 54.6% was in adult age (> 18 years old). Sixty-one percent of subjects had interstitial deletion of the proximal long arm of paternal chromosome 15, while 36.4% had uniparental maternal disomy for chromosome 15. Three patients presented an imprinting centre defect and one had a de novo translocation involving chromosome 15. A positive methylation test was demonstrated in the remaining 11 individuals but the underlying genetic defect was not identified. Compulsive food-seeking and hyperphagia was present in 63.6% of patients (prevalently in adults); 54.5% of patients developed morbid obesity. Altered glucose metabolism was present in 33.3% of patients. Central hypothyroidism was reported in 20% of patients; 94.7% of children and adolescents and 13.3% of adult patients is undergoing GH treatment. CONCLUSIONS The analyses of these six variables allowed to highlight important clinical aspects and natural history of PWS useful to inform future actions to be taken by national health care services and health professionals.
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Affiliation(s)
- Marco Salvatore
- National Centre for Rare Diseases, Undiagnosed Rare Diseases Interdepartmental Unit, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy.
| | - Paola Torreri
- grid.416651.10000 0000 9120 6856National Centre for Rare Diseases, Undiagnosed Rare Diseases Interdepartmental Unit, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy
| | - Graziano Grugni
- grid.418224.90000 0004 1757 9530Division of Auxology, Istituto Auxologico Italiano IRCCS, Piancavallo di Oggebbio, VB Italy
| | - Adele Rocchetti
- grid.416651.10000 0000 9120 6856National Centre for Rare Diseases, Undiagnosed Rare Diseases Interdepartmental Unit, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy
| | - Mohamad Maghnie
- grid.419504.d0000 0004 1760 0109Department of Pediatrics, IRCCS Istituto Giannina Gaslini, Genoa, Italy ,grid.5606.50000 0001 2151 3065Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genova, Genoa, Italy
| | - Giuseppa Patti
- grid.419504.d0000 0004 1760 0109Department of Pediatrics, IRCCS Istituto Giannina Gaslini, Genoa, Italy ,grid.5606.50000 0001 2151 3065Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genova, Genoa, Italy
| | - Antonino Crinò
- grid.411075.60000 0004 1760 4193Center for Rare Diseases and Congenital Defects, Fondazione Policlinico Universitario “Agostino Gemelli” IRCCS, Rome, Italy
| | - Maurizio Elia
- grid.419843.30000 0001 1250 7659Oasi Research Institute – IRCCS, Troina, EN Italy
| | - Donatella Greco
- grid.419843.30000 0001 1250 7659Oasi Research Institute – IRCCS, Troina, EN Italy
| | - Corrado Romano
- grid.419843.30000 0001 1250 7659Oasi Research Institute – IRCCS, Troina, EN Italy ,grid.8158.40000 0004 1757 1969Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | | | - Enza Mozzillo
- grid.4691.a0000 0001 0790 385XAOU Federico II, Naples, Italy
| | - Annamaria Colao
- grid.4691.a0000 0001 0790 385XAOU Federico II, Naples, Italy
| | | | - Uberto Pagotto
- grid.6292.f0000 0004 1757 1758Unità di Endocrinologia e Prevenzione e Cura del Diabete, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Dipartimento di Scienze Mediche e Chirurgiche (DIMEC), Alma Mater Studiorum Università di Bologna, Bologna, Italy
| | - Valentina Lo Preiato
- grid.6292.f0000 0004 1757 1758Unità di Endocrinologia e Prevenzione e Cura del Diabete, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Dipartimento di Scienze Mediche e Chirurgiche (DIMEC), Alma Mater Studiorum Università di Bologna, Bologna, Italy
| | - Emanuela Scarano
- Rare Diseases Unit, Department of Pediatrics, IRCCS AOU Sant’Orsola, Bologna, Italy
| | | | - Gianluca Tornese
- grid.418712.90000 0004 1760 7415IRCCS Materno Infantile Burlo Garofolo, Trieste, Italy
| | - Danilo Fintini
- grid.414603.4IRCCS Bambino Gesù Paediatric Hospital, Rome, Italy
| | - Sarah Bocchini
- grid.414603.4IRCCS Bambino Gesù Paediatric Hospital, Rome, Italy
| | - Sara Osimani
- grid.18887.3e0000000417581884IRCCS Ospedale San Raffaele, Milan, Italy
| | - Luisa De Sanctis
- grid.7605.40000 0001 2336 6580AOU Città della Salute e della Scienza/Ospedale Infantile Regina Margherita and Dipartimento di Scienze di Sanità Pubblica e Pediatriche, Università di Torino, Turin, Italy
| | - Michele Sacco
- grid.413503.00000 0004 1757 9135IRCCS Casa Sollievo della Sofferenza - San Giovanni Rotondo, Foggia, Italy
| | - Irene Rutigliano
- grid.413503.00000 0004 1757 9135IRCCS Casa Sollievo della Sofferenza - San Giovanni Rotondo, Foggia, Italy
| | | | | | | | | | - Stefano Stagi
- grid.413181.e0000 0004 1757 8562Azienda Ospedaliera Universitaria Meyer, Florence, Italy
| | - Laura Guazzarotti
- grid.411474.30000 0004 1760 2630Azienda Ospedale Università Padova (LG), Padua, Italy ,grid.5608.b0000 0004 1757 3470Dipartimento di Medicina (DIMED), University of Padua (PM, FD), Padua, Italy
| | - Pietro Maffei
- grid.411474.30000 0004 1760 2630Azienda Ospedale Università Padova (LG), Padua, Italy ,grid.5608.b0000 0004 1757 3470Dipartimento di Medicina (DIMED), University of Padua (PM, FD), Padua, Italy
| | - Francesca Dassie
- grid.411474.30000 0004 1760 2630Azienda Ospedale Università Padova (LG), Padua, Italy ,grid.5608.b0000 0004 1757 3470Dipartimento di Medicina (DIMED), University of Padua (PM, FD), Padua, Italy
| | - Domenica Taruscio
- grid.416651.10000 0000 9120 6856National Centre for Rare Diseases, Undiagnosed Rare Diseases Interdepartmental Unit, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy
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Rahman QFA, Jufri NF, Hamid A. Hyperphagia in Prader-Willi syndrome with obesity: From development to pharmacological treatment. Intractable Rare Dis Res 2023; 12:5-12. [PMID: 36873672 PMCID: PMC9976092 DOI: 10.5582/irdr.2022.01127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/10/2023] [Accepted: 02/25/2023] [Indexed: 03/03/2023] Open
Abstract
Prader-Willi syndrome (PWS) is a rare genetic disorder due to lack of genes expression inherited from the paternal chromosome 15q11-q13 region usually from paternal deletions, maternal uniparental disomy 15 or imprinting defect. There are two different nutritional stages reported in an individual with PWS; first stage during infancy marked by feeding and growth difficulties and second stage where hyperphagia starts and leads to development of obesity. However, the exact mechanism of hyperphagia development, from having difficulties in feeding during early years to insatiable appetite after they grow is still unknown and is the focused in this review. The keywords used for literature search such as "Prader-Willi syndrome", "hyperphagia", "obesity", and "treatment" were used to create the search strings by using synonyms in order to retrieve the relevant records from PubMed, Scopus and Science Direct. The possible mechanism of hyperphagia can be classed into hormonal abnormalities such as increase in ghrelin and leptin from infancy to adulthood. Low level of hormones was observed in the thyroid, insulin and peptide YY at certain ages. Neuronal abnormalities contributed by Orexin A and brain structure alteration was documented at 4-30 years old. Treatment in the form of drugs such as livoletide, topiramate, and diazoxide could potentially alleviate these abnormalities and make hyperphagia less prominent in PWS. The approaches are important to regulate the hormonal changes and neuronal involvement as potentially controlling hyperphagia and obesity.
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Affiliation(s)
| | - Nurul Farhana Jufri
- Address correspondence to:Nurul Farhana Jufri, Biomedical Science Program, Center for Toxicology and Health Risk Studies, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, Kuala Lumpur 50300, Malaysia. E-mail:
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Gámez S, Cobo J, Fernández-Lafitte M, Coronas R, Parra I, Oliva JC, Àlvarez A, Esteba-Castillo S, Giménez-Palop O, Corripio R, Palao DJ, Caixàs A. An Exploratory Analysis on the 2D:4D Digit Ratio and Its Relationship with Social Responsiveness in Adults with Prader-Willi Syndrome. J Clin Med 2023; 12:jcm12031155. [PMID: 36769803 PMCID: PMC9917981 DOI: 10.3390/jcm12031155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/22/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023] Open
Abstract
Prader-Willi syndrome (PWS) is a genetic disorder produced by a lack of expression of paternally derived genes in the 15q11-13 region. Research has generally focused on its genetic and behavioral expression, but only a few studies have examined epigenetic influences. Prenatal testosterone or the maternal testosterone-to-estradiol ratio (MaTtEr) has been suggested to play an important role in the development of the 'social brain' during pregnancy. Some studies propose the 2D:4D digit ratio of the hand as an indirect MaTtEr measure. The relationship between social performance and MaTtEr has been studied in other neurodevelopmental conditions such as Autism Spectrum Disorder (ASD), but to our best knowledge, it has never been studied in PWS. Therefore, our study aims to clarify the possible existence of a relationship between social performance-as measured using the Social Responsiveness Scale (SRS)-and MaTtEr levels using the 2D:4D ratio. We found that, as a group, PWS individuals have shorter index and ring fingers than the control group, but no significant difference in the 2D:4D ratios. The 2D:4D ratio showed a correlation only with Restricted Interests and Repetitive Behavior Subscale, where a positive correlation only for male individuals with PWS was found. Considering only PWS with previous GH treatment during childhood/adolescence (PWS-GH), index and ring fingers did not show differences in length with the control group, but the 2D:4D ratio was significantly higher in the right or dominant hand compared to controls.
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Affiliation(s)
- Sara Gámez
- Mental Health Department, Corporació Sanitària Parc Taulí—Universitat Autònoma de Barcelona—CIBERSAM, 08202 Sabadell, Spain
| | - Jesus Cobo
- Mental Health Department, Corporació Sanitària Parc Taulí—Universitat Autònoma de Barcelona—CIBERSAM, 08202 Sabadell, Spain
- Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
- Institut d’Investigació i Innovació Parc Taulí (I3PT)—CERCA, 08208 Sabadell, Spain
- Correspondence: (J.C.); (A.C.)
| | - Meritxell Fernández-Lafitte
- Mental Health Department, Corporació Sanitària Parc Taulí—Universitat Autònoma de Barcelona—CIBERSAM, 08202 Sabadell, Spain
| | - Ramón Coronas
- Mental Health Department, Corporació Sanitària Parc Taulí—Universitat Autònoma de Barcelona—CIBERSAM, 08202 Sabadell, Spain
| | - Isabel Parra
- Mental Health Department, Corporació Sanitària Parc Taulí—Universitat Autònoma de Barcelona—CIBERSAM, 08202 Sabadell, Spain
- Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
- Institut d’Investigació i Innovació Parc Taulí (I3PT)—CERCA, 08208 Sabadell, Spain
| | - Joan Carles Oliva
- Statistics Unit, Fundació Parc Taulí—(I3PT)—CERCA, 08208 Sabadell, Spain
| | - Aida Àlvarez
- Department of Mental Health, Mutua Terrassa University Hospital, 08221 Terrassa, Spain
| | - Susanna Esteba-Castillo
- Specialized Mental Health and Intellectual Disability Department, Institut d’Assistència Sanitària, Parc Hospitalari Martí i Julià, 17190 Girona, Spain
- Neurodevelopment Group, Girona Biomedical Research Institute IDIBGI, Institut d’Assistència Sanitària, Parc Hospitalari Martí i Julià, 17190 Girona, Spain
| | - Olga Giménez-Palop
- Endocrinology and Nutrition Department, Hospital Universitari Parc Taulí, Corporació Sanitària Parc Taulí—Universitat Autònoma de Barcelona, 08202 Sabadell, Spain
- Department of Medicine, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Raquel Corripio
- Pediatric Endocrine Department, Parc Taulí Hospital Universitari, Institutd’Investigació i Innovació Parc Taulí (I3PT), Universitat Autònoma de Barcelona, 08202 Sabadell, Spain
| | - Diego J. Palao
- Mental Health Department, Corporació Sanitària Parc Taulí—Universitat Autònoma de Barcelona—CIBERSAM, 08202 Sabadell, Spain
- Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
- Institut d’Investigació i Innovació Parc Taulí (I3PT)—CERCA, 08208 Sabadell, Spain
| | - Assumpta Caixàs
- Endocrinology and Nutrition Department, Hospital Universitari Parc Taulí, Corporació Sanitària Parc Taulí—Universitat Autònoma de Barcelona, 08202 Sabadell, Spain
- Department of Medicine, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
- Correspondence: (J.C.); (A.C.)
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Progress in Brain Magnetic Resonance Imaging of Individuals with Prader-Willi Syndrome. J Clin Med 2023; 12:jcm12031054. [PMID: 36769704 PMCID: PMC9917938 DOI: 10.3390/jcm12031054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/24/2023] [Accepted: 01/27/2023] [Indexed: 01/31/2023] Open
Abstract
Prader-Willi syndrome (PWS), a rare epigenetic disease mapping the imprinted chromosomal domain of 15q11.2-q13.3, manifests a regular neurodevelopmental trajectory in different phases. The current multimodal magnetic resonance imaging (MRI) approach for PWS focues on morphological MRI (mMRI), diffusion MRI (dMRI) and functional MRI (fMRI) to uncover brain alterations. This technique offers another perspective to understand potential neurodevelopmental and neuropathological processes of PWS, in addition to specific molecular gene expression patterns, various clinical manifestations and metabolic phenotypes. Multimodal MRI studies of PWS patients demonstrated common brain changes in the volume of gray matter, the integrity of the fiber tracts and the activation and connectivity of some networks. These findings mainly showed that brain alterations in the frontal reward circuit and limbic system were related to molecular genetics and clinical manifestations (e.g., overwhelming eating, obsessive compulsive behaviors and skin picking). Further exploration using a large sample size and advanced MRI technologies, combined with artificial intelligence algorithms, will be the main research direction to study the structural and functional changes and potential pathogenesis of PWS.
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Panfili FM, Convertino A, Grugni G, Mazzitelli L, Bocchini S, Crinò A, Campana G, Cappa M, Delvecchio M, Faienza MF, Licenziati MR, Mariani M, Osimani S, Pajno R, Patti G, Rutigliano I, Sacco M, Scarano E, Fintini D. Multicentric Italian case-control study on 25OH vitamin D levels in children and adolescents with Prader-Willi syndrome. J Endocrinol Invest 2023:10.1007/s40618-022-01990-5. [PMID: 36708456 DOI: 10.1007/s40618-022-01990-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 12/09/2022] [Indexed: 01/29/2023]
Abstract
PURPOSE 25OHD levels in patients with Prader-Willi Syndrome (PWS), the most frequent cause of genetic obesity with a peculiar fat mass distribution, are still debated. Insulin resistance (IR), Body Mass Index-SDS (BMI-SDS), Growth Hormone Therapy (GHT), and puberty onset seem to interact with 25OHD levels. The objectives of the study are: (1) To analyze 25OHD levels in pediatric PWS patients in comparison with a control group (CNT) (2) To evaluate a possible correlation between BMI-SDS, HOMA-IR, puberty, GHT, and 25OHD levels. METHODS This is a retrospective case-control, multicenter study. Data were collected among 8 different Italian Hospitals (outpatient clinics), over a period of four years (2016-2020). We included 192 genetically confirmed PWS and 192 CNT patients, aged 3-18 years, matched 1:1 for age, gender, BMI-SDS, Tanner stage, sun exposure, and month of recruitment. RESULTS No statistically significant differences in 25OHD levels were observed between the PWS population and the CNT (PWS 24.0 ng/mL vs CNT 22.5 ng/mL, p > 0.05), OR = 0.89 (95% CI 0.58-1.35). We observed a slight, although non-significant, reduction in 25OHD levels comparing NW and OB populations. HOMA-IR, puberty onset, genotype and GHT (previous or ongoing) did not show statistically significant correlation with 25OHD levels. CONCLUSIONS Our findings could be useful for clinicians to optimize the therapeutic management as well as to increase awareness of PWS.
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Affiliation(s)
| | - A Convertino
- Prader Willi Reference Center, Endocrinology Unit, Pediatric University Department, Bambino Gesù Children Hospital, Via Torre di Palidoro, 00050, Palidoro, Rome, Italy
| | - G Grugni
- Auxology Division, Istituto Auxologico Italiano IRCCS, Piancavallo di Oggebbio, Verbania, Italy
| | - L Mazzitelli
- Prader Willi Reference Center, Endocrinology Unit, Pediatric University Department, Bambino Gesù Children Hospital, Via Torre di Palidoro, 00050, Palidoro, Rome, Italy
| | - S Bocchini
- Prader Willi Reference Center, Endocrinology Unit, Pediatric University Department, Bambino Gesù Children Hospital, Via Torre di Palidoro, 00050, Palidoro, Rome, Italy
| | - A Crinò
- Prader Willi Reference Center, Endocrinology Unit, Pediatric University Department, Bambino Gesù Children Hospital, Via Torre di Palidoro, 00050, Palidoro, Rome, Italy
| | - G Campana
- Prader Willi Reference Center, Endocrinology Unit, Pediatric University Department, Bambino Gesù Children Hospital, Via Torre di Palidoro, 00050, Palidoro, Rome, Italy
| | - M Cappa
- Prader Willi Reference Center, Endocrinology Unit, Pediatric University Department, Bambino Gesù Children Hospital, Via Torre di Palidoro, 00050, Palidoro, Rome, Italy
| | - M Delvecchio
- Metabolic and Genetic Disease Unit, Pediatric Hospital Giovanni XXIII, Bari, Italy
| | - M F Faienza
- Department of Biomedical Science and Human Oncology Department, A. Moro University, Bari, Italy
| | - M R Licenziati
- Obesity and Endocrine Diseases Unit, Neuroscience and Rehabilitation Department, Santobono-Pausilipon Hospital, Naples, Italy
| | - M Mariani
- Prader Willi Reference Center, Endocrinology Unit, Pediatric University Department, Bambino Gesù Children Hospital, Via Torre di Palidoro, 00050, Palidoro, Rome, Italy
| | - S Osimani
- Pediatric Unit, IRCCS San Raffaele, Milan, Italy
| | - R Pajno
- Pediatric Unit, IRCCS San Raffaele, Milan, Italy
| | - G Patti
- Pediatric Department, Gaslini Hospital, Genoa, Italy
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health-University of Genova, Genoa, Italy
| | - I Rutigliano
- Pediatric Unit, "Casa Sollievo della Sofferenza" Hospital, San Giovanni Rotondo, Foggia, Italy
| | - M Sacco
- Pediatric Unit, "Casa Sollievo della Sofferenza" Hospital, San Giovanni Rotondo, Foggia, Italy
| | - E Scarano
- Rare Disease Unit, Pediatric Unit, Sant'Orsola Hospital, Bologna, Italy
| | - D Fintini
- Prader Willi Reference Center, Endocrinology Unit, Pediatric University Department, Bambino Gesù Children Hospital, Via Torre di Palidoro, 00050, Palidoro, Rome, Italy.
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Zogopoulos VL, Malatras A, Kyriakidis K, Charalampous C, Makrygianni EA, Duguez S, Koutsi MA, Pouliou M, Vasileiou C, Duddy WJ, Agelopoulos M, Chrousos GP, Iconomidou VA, Michalopoulos I. HGCA2.0: An RNA-Seq Based Webtool for Gene Coexpression Analysis in Homo sapiens. Cells 2023; 12:cells12030388. [PMID: 36766730 PMCID: PMC9913097 DOI: 10.3390/cells12030388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/09/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023] Open
Abstract
Genes with similar expression patterns in a set of diverse samples may be considered coexpressed. Human Gene Coexpression Analysis 2.0 (HGCA2.0) is a webtool which studies the global coexpression landscape of human genes. The website is based on the hierarchical clustering of 55,431 Homo sapiens genes based on a large-scale coexpression analysis of 3500 GTEx bulk RNA-Seq samples of healthy individuals, which were selected as the best representative samples of each tissue type. HGCA2.0 presents subclades of coexpressed genes to a gene of interest, and performs various built-in gene term enrichment analyses on the coexpressed genes, including gene ontologies, biological pathways, protein families, and diseases, while also being unique in revealing enriched transcription factors driving coexpression. HGCA2.0 has been successful in identifying not only genes with ubiquitous expression patterns, but also tissue-specific genes. Benchmarking showed that HGCA2.0 belongs to the top performing coexpression webtools, as shown by STRING analysis. HGCA2.0 creates working hypotheses for the discovery of gene partners or common biological processes that can be experimentally validated. It offers a simple and intuitive website design and user interface, as well as an API endpoint.
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Affiliation(s)
- Vasileios L. Zogopoulos
- Centre of Systems Biology, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
- Section of Cell Biology and Biophysics, Department of Biology, National and Kapodistrian University of Athens, 15701 Athens, Greece
| | - Apostolos Malatras
- Biobank.cy Center of Excellence in Biobanking and Biomedical Research, University of Cyprus, 2029 Nicosia, Cyprus
| | - Konstantinos Kyriakidis
- Centre of Systems Biology, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
- School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Chrysanthi Charalampous
- Centre of Basic Research, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
| | - Evanthia A. Makrygianni
- University Research Institute of Maternal and Child Health and Precision Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Stéphanie Duguez
- Personalised Medicine Centre, School of Medicine, Ulster University, Derry-Londonderry BT47 6SB, UK
| | - Marianna A. Koutsi
- Centre of Basic Research, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
| | - Marialena Pouliou
- Centre of Basic Research, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
| | - Christos Vasileiou
- Centre of Systems Biology, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
- Engineering Design and Computing Laboratory, ETH Zurich, 8092 Zurich, Switzerland
| | - William J. Duddy
- Personalised Medicine Centre, School of Medicine, Ulster University, Derry-Londonderry BT47 6SB, UK
| | - Marios Agelopoulos
- Centre of Basic Research, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
| | - George P. Chrousos
- University Research Institute of Maternal and Child Health and Precision Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Vassiliki A. Iconomidou
- Section of Cell Biology and Biophysics, Department of Biology, National and Kapodistrian University of Athens, 15701 Athens, Greece
| | - Ioannis Michalopoulos
- Centre of Systems Biology, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
- Correspondence:
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Pellikaan K, van Weijen PMH, Rosenberg AGW, Hoekstra FME, Vermaak M, Oomen PHN, van der Lely AJ, Cuypers JAAE, de Graaff LCG. What endocrinologists can do to prevent cardiovascular complications in adults with Prader-Willi syndrome: Lessons from a case series. Front Endocrinol (Lausanne) 2023; 14:1145066. [PMID: 37033248 PMCID: PMC10080071 DOI: 10.3389/fendo.2023.1145066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 03/06/2023] [Indexed: 04/11/2023] Open
Abstract
CONTEXT Prader-Willi syndrome (PWS) is a complex rare genetic syndrome. Mortality in patients with PWS is 3% per year. In nearly half of the patients, the cause of death is of cardiopulmonary origin. Prevention, diagnosis and treatment of cardiovascular (CV) disease in PWS adults is complicated by the behavioral phenotype, reduced ability to express physical complaints, high pain threshold and obesity. OBJECTIVE To describe the challenges in prevention, diagnosis and treatment of CV disease in PWS adults, in order to increase awareness and improve medical care. METHODS Retrospective study of medical records of adults visiting the Dutch PWS reference center. RESULTS We describe the challenges encountered during diagnosis and treatment of four PWS adults with heart failure. All had pre-existent peripheral edema. CV risk factors in these patients were obesity (n=4), type 2 diabetes mellitus (n=2), hypertension (n=2), hypogonadism (n=3) and sleep apnea (n=2). Remarkably, all patients were younger than 40 years during their first cardiac decompensation. All patients presented with progressive shortness of breath and/or orthopnea and progressive pitting edema. In 117 controls with PWS without CV problems, 31% had leg edema. CONCLUSION Diagnosing CV problems in PWS adults is challenging. Peripheral edema is common in PWS adults without CV morbidity, which makes edema in general a poor marker for heart failure. However, when edema is of the pitting kind and progressive, this is a strong predictor of cardiac decompensation. We provide practical recommendations for diagnosing and treating CV problems in this vulnerable patient population.
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Affiliation(s)
- Karlijn Pellikaan
- Department of Internal Medicine, Division of Endocrinology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
- Center for Adults with Rare Genetic Syndromes, Department of Internal Medicine, Division of Endocrinology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
- Dutch Center of Reference for Prader-Willi Syndrome, Rotterdam, Netherlands
- Academic Centre for Growth Disorders, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Paula M. H. van Weijen
- Department of Internal Medicine, Division of Endocrinology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Anna G. W. Rosenberg
- Department of Internal Medicine, Division of Endocrinology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
- Center for Adults with Rare Genetic Syndromes, Department of Internal Medicine, Division of Endocrinology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
- Dutch Center of Reference for Prader-Willi Syndrome, Rotterdam, Netherlands
- Academic Centre for Growth Disorders, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | | | | | - Peter H. N. Oomen
- Department of Internal Medicine, Medical Center Leeuwarden, Leeuwarden, Netherlands
| | - Aart J. van der Lely
- Department of Internal Medicine, Division of Endocrinology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Judith A. A. E. Cuypers
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Laura C. G. de Graaff
- Department of Internal Medicine, Division of Endocrinology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
- Center for Adults with Rare Genetic Syndromes, Department of Internal Medicine, Division of Endocrinology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
- Dutch Center of Reference for Prader-Willi Syndrome, Rotterdam, Netherlands
- Academic Centre for Growth Disorders, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
- *Correspondence: Laura C. G. de Graaff,
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60
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Rendell MS. Obesity and diabetes: the final frontier. Expert Rev Endocrinol Metab 2023; 18:81-94. [PMID: 36710450 DOI: 10.1080/17446651.2023.2168643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 01/11/2023] [Indexed: 01/14/2023]
Abstract
INTRODUCTION Obesity is a key target in the treatment and prevention of diabetes and independently to reduce the burden of cardiovascular disease. We reviewed the options now available and anticipated to deal with obesity. AREAS COVERED We considered the epidemiology, genetics, and causation of obesity and the relationship to diabetes, and the dietary, pharmaceutical, and surgical management of the condition. The literature search covered both popular media via Google Search and the academic literature as indexed on PubMed with search terms including obesity, childhood obesity, adipocytes, insulin resistance, mechanisms of satiety, bariatric surgery, GLP-1 receptor agonists, and SGLT2 inhibitors. EXPERT OPINION Although bariatric surgery has been the primary approach to treating obese individuals, the emergence of agents impacting the brain satiety centers now promises effective, non-invasive treatment of obesity for individuals with and without diabetes. The GLP-1 receptor agonists have assumed the primary role in treating obesity with significant weight loss. Long-term results with semaglutide and tirzepatide are now approaching the success seen with bariatric surgery. Future agents combining the benefits of satiety control and thermogenesis to dissipate caloric excess are under investigation.
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Affiliation(s)
- Marc S Rendell
- The Association of Diabetes Investigators, Newport Coast, CA, USA
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Aureli A, Bocchini S, Mariani M, Crinò A, Cappa M, Fintini D. A rare occurrence of non-classic congenital adrenal hyperplasia and type 1 diabetes mellitus in a girl with Prader-Willi Syndrome: Case report and review of the literature. Front Endocrinol (Lausanne) 2023; 14:1148318. [PMID: 37124733 PMCID: PMC10130376 DOI: 10.3389/fendo.2023.1148318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 03/23/2023] [Indexed: 05/02/2023] Open
Abstract
Prader-Willi syndrome (PWS) is a rare genetic disorder resulting from lack of expression of the paternally derived chromosome 15q11-13, associated with several complications, including pubertal disorders, short stature, hyperphagia, obesity, glucose metabolism abnormalities, scoliosis, obstructive sleep apnea syndrome (OSAS) and behavioral problems. We report the case of a girl affected by PWS who presented at the age of 5.9 with premature pubarche, accelerated linear growth and advanced bone age (BA). She was subsequently diagnosed with non-classic congenital adrenal hyperplasia (CAH) confirmed by genetic analysis. Considering the clinical, biochemical, and genetic findings, hydrocortisone therapy was started to prevent rapid BA acceleration and severe compromission of final height. During infancy, short stature and low levels of insulin-like growth factor-1 (IGF-1) for age and gender led to suspicion of growth hormone deficiency (GHD), confirmed by stimulation testing (arginine and clonidine). rhGH therapy was administered and continued until final height was reached. During endocrinological follow up she developed impaired glucose tolerance with positive markers of β-cell autoimmunity (anti-glutamic acid decarboxylase antibodies, GAD Ab), which evolved over time into type 1 diabetes mellitus and insulin therapy with a basal-bolus scheme and an appropriate diet were needed.
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Affiliation(s)
- Alessia Aureli
- Prader-Willi Reference Center, Endocrinology Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy
| | - Sarah Bocchini
- Prader-Willi Reference Center, Endocrinology Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy
| | - Michela Mariani
- Prader-Willi Reference Center, Endocrinology Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy
| | - Antonino Crinò
- Center for Rare Diseases and Congenital Defects, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Marco Cappa
- Prader-Willi Reference Center, Endocrinology Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy
| | - Danilo Fintini
- Prader-Willi Reference Center, Endocrinology Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy
- *Correspondence: Danilo Fintini,
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62
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Wu J, Lei M, Wang X, Liu N, Xu X, Gu C, Yu Y, Liu W. Prader-Willi syndrome patient with atypical phenotypes caused by mosaic deletion in the paternal 15q11-q13 region: a case report. Ital J Pediatr 2022; 48:204. [PMID: 36582000 PMCID: PMC9798715 DOI: 10.1186/s13052-022-01398-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 12/15/2022] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Prader-Willi syndrome (PWS) is a multisystemic complex genetic disorder caused by the loss of paternally expressed genes in the human chromosome region 15q11.2-q13. It is characterized by severe hypotonia and feeding difficulties in early infancy, followed in later infancy or early childhood by excessive eating and gradual development of morbid obesity. Motor milestones and language development are delayed and most patients have intellectual disability. CASE PRESENTATION Here we describe a rare PWS case caused by mosaic imprinting defect in the region 15q11.2-q13 of paternal origin. The proband was a male child with a clinical presentation of global developmental delay and hypotonia with specific facial features. Karyotype of the child was noted as mosaic: 45XY,der(15)?t(15;21),-21[26]/46,XY[24]. Whole-exome sequencing (WES) identified a deletion of 22.7 Mb in size at chr15q11.2q21.1 region and a deletion of 2.1 Mb in size at chr21q22.3 region. The Methylation-specific multiplex ligation-dependent probe amplification(MS-MLPA) of the 15q11.2-q13 region showed that the loading ratio of methylated alleles was 70% and that of unmethylated alleles was 30%(50% normal), which confirmed that the loss of mosaic imprinted defects in the paternal allele led to the diagnosis of PWS. CONCLUSIONS We propose that complete clinical criteria for PWS should not be considered sensitive in diagnosing partial atypical PWS due to mosaic imprinting defects. In contrast, clinical suspicion based on less restrictive criteria followed by multiple techniques is a more powerful approach.
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Affiliation(s)
- Jinying Wu
- Tianjin Pediatric Research Institute, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin, 300134, China
- Tianjin Key Laboratory of Birth Defects for Prevention and Treatment, Tianjin, 300134, China
| | - Meifang Lei
- Department of Neurology, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin, 300134, China
| | - Xuetao Wang
- Tianjin Pediatric Research Institute, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin, 300134, China
- Tianjin Key Laboratory of Birth Defects for Prevention and Treatment, Tianjin, 300134, China
| | - Nan Liu
- Tianjin Pediatric Research Institute, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin, 300134, China
- Tianjin Key Laboratory of Birth Defects for Prevention and Treatment, Tianjin, 300134, China
| | - Xiaowei Xu
- Tianjin Pediatric Research Institute, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin, 300134, China
- Tianjin Key Laboratory of Birth Defects for Prevention and Treatment, Tianjin, 300134, China
| | - Chunyu Gu
- Tianjin Pediatric Research Institute, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin, 300134, China
- Tianjin Key Laboratory of Birth Defects for Prevention and Treatment, Tianjin, 300134, China
| | - Yuping Yu
- Graduate College of Tianjin Medical University, Tianjin, 300070, China
| | - Wei Liu
- Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin, 300134, China.
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63
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van Abswoude DH, Pellikaan K, Rosenberg AGW, Davidse K, Coupaye M, Høybye C, Markovic TP, Grugni G, Crinò A, Caixàs A, Poitou C, Mosbah H, Weir T, van Vlimmeren LA, Rutges JPHJ, De Klerk LWL, Zillikens MC, van der Lely AJ, de Graaff LCG. Bone Health in Adults With Prader-Willi Syndrome: Clinical Recommendations Based on a Multicenter Cohort Study. J Clin Endocrinol Metab 2022; 108:59-84. [PMID: 36149817 PMCID: PMC9759176 DOI: 10.1210/clinem/dgac556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 09/13/2022] [Indexed: 02/03/2023]
Abstract
CONTEXT Prader-Willi syndrome (PWS) is a rare complex genetic syndrome, characterized by delayed psychomotor development, hypotonia, and hyperphagia. Hormone deficiencies such as hypogonadism, hypothyroidism, and growth hormone deficiency are common. The combination of hypotonia, low physical activity, and hypogonadism might lead to a decrease in bone mass and increase in fracture risk. Moreover, one would expect an increased risk of scoliosis due to hypotonia and low physical activity. OBJECTIVE To study the prevalence and risk factors for skeletal problems (reduced bone mineral density, fractures, and scoliosis) in adults with PWS. METHODS We retrospectively collected patient characteristics, medical history, medication, biochemical measurements, dual-energy X-ray absorptiometry scans, and spinal X-rays and reviewed the current literature. RESULTS We included 354 adults with PWS (median age 31 years; 43% males), of whom 51 (14%) had osteoporosis (T-score below -2.5) and 143 (54%) had osteopenia (T-score -1 to -2.5). The most prevalent modifiable risk factors for osteoporosis were hypogonadism, insufficient dairy intake, sedentary lifestyle, and corticosteroid use. Male sex was associated with osteoporosis (P = .005). Growth hormone treatment was not associated with osteoporosis. A history of vertebral fractures was present in 10 (3%) and nonvertebral fractures in 59 (17%). Scoliosis was present in 263 (80%), but no modifiable risk factors were identified. CONCLUSION Besides scoliosis, osteoporosis is common in adults with PWS. Based on the literature and the risk factors for osteoporosis found in our cohort, we provide practical clinical recommendations to avoid skeletal complications in these vulnerable patients.
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Affiliation(s)
| | | | - Anna G W Rosenberg
- Department of Internal Medicine, Division of Endocrinology, Erasmus Medical
Center, University Medical Center Rotterdam, 3015 GD
Rotterdam, The Netherlands
- Center for Adults with Rare Genetic Syndromes, Department of Internal
Medicine, Division of Endocrinology, Erasmus Medical Center, University Medical Center
Rotterdam, 3015 GD Rotterdam, The Netherlands
- Dutch Center of Reference for Prader-Willi Syndrome,
3015 GD Rotterdam, The
Netherlands
- Academic Center for Growth Disorders, Erasmus Medical Center, University
Medical Center Rotterdam, 3015 GD Rotterdam,
The Netherlands
| | - Kirsten Davidse
- Department of Internal Medicine, Division of Endocrinology, Erasmus Medical
Center, University Medical Center Rotterdam, 3015 GD
Rotterdam, The Netherlands
- Center for Adults with Rare Genetic Syndromes, Department of Internal
Medicine, Division of Endocrinology, Erasmus Medical Center, University Medical Center
Rotterdam, 3015 GD Rotterdam, The Netherlands
- Dutch Center of Reference for Prader-Willi Syndrome,
3015 GD Rotterdam, The
Netherlands
- Academic Center for Growth Disorders, Erasmus Medical Center, University
Medical Center Rotterdam, 3015 GD Rotterdam,
The Netherlands
| | - Muriel Coupaye
- Assistance Publique-Hôpitaux de Paris, Rare Diseases Center of reference
‘Prader-Willi Syndrome and obesity with eating disorders’ (PRADORT), Nutrition
Department, Institute of Cardiometabolism and Nutrition, ICAN, Pitié-Salpêtrière
Hospital, Sorbonne Université, INSERM, Nutriomics, F75013
Paris, France
- International Network for Research, Management & Education on adults
with Prader-Willi Syndrome (INfoRMEd-PWS)
| | - Charlotte Høybye
- International Network for Research, Management & Education on adults
with Prader-Willi Syndrome (INfoRMEd-PWS)
- ENDO-ERN (European Reference Network)
- Department of Molecular Medicine and Surgery, Karolinska Institute and
Karolinska University Hospital, Stockholm,
Sweden
- Department of Endocrinology, Karolinska Institute and Karolinska University
Hospital, Stockholm, Sweden
| | - Tania P Markovic
- International Network for Research, Management & Education on adults
with Prader-Willi Syndrome (INfoRMEd-PWS)
- Metabolism & Obesity Services, Royal Prince Alfred
Hospital, Camperdown, Australia
- Boden Initiative, Charles Perkins Centre, University of
Sydney, SydneyAustralia
| | - Graziano Grugni
- International Network for Research, Management & Education on adults
with Prader-Willi Syndrome (INfoRMEd-PWS)
- ENDO-ERN (European Reference Network)
- Divison of Auxology, Istituto Auxologico Italiano, IRCCS,
Piancavallo (VB), Italy
| | - Antonino Crinò
- International Network for Research, Management & Education on adults
with Prader-Willi Syndrome (INfoRMEd-PWS)
- Reference Center for Prader-Willi syndrome, Bambino Gesù Hospital, Research
Institute, Palidoro (Rome), Italy
| | - Assumpta Caixàs
- International Network for Research, Management & Education on adults
with Prader-Willi Syndrome (INfoRMEd-PWS)
- Department of Endocrinology and Nutrition, Hospital Universitari Parc
Taulí, Institut d’Investigació i Innovació Parc Taulí (I3PT), Universitat Autònoma de
Barcelona, Sabadell, Spain
- Department of Medicine, Universitat Autònoma de Barcelona,
Sabadell, Spain
| | - Christine Poitou
- Assistance Publique-Hôpitaux de Paris, Rare Diseases Center of reference
‘Prader-Willi Syndrome and obesity with eating disorders’ (PRADORT), Nutrition
Department, Institute of Cardiometabolism and Nutrition, ICAN, Pitié-Salpêtrière
Hospital, Sorbonne Université, INSERM, Nutriomics, F75013
Paris, France
- International Network for Research, Management & Education on adults
with Prader-Willi Syndrome (INfoRMEd-PWS)
- ENDO-ERN (European Reference Network)
| | - Helena Mosbah
- Assistance Publique-Hôpitaux de Paris, Rare Diseases Center of reference
‘Prader-Willi Syndrome and obesity with eating disorders’ (PRADORT), Nutrition
Department, Institute of Cardiometabolism and Nutrition, ICAN, Pitié-Salpêtrière
Hospital, Sorbonne Université, INSERM, Nutriomics, F75013
Paris, France
| | - Tessa Weir
- Department of Endocrinology, Nepean-Blue Mountains Hospital,
Sydney, NSW, Australia
- Northern Clinical School, Faculty of Medicine and Health, University of
Sydney, Sydney, NSW, Australia
| | - Leo A van Vlimmeren
- Department of Rehabilitation and Pediatric Physical Therapy, Radboud
University Medical Centrum, 6525 GA Nijmegen,
The Netherlands
| | - Joost P H J Rutges
- Department of Orthopedic surgery, Erasmus Medical Center, University
Medical Center Rotterdam, 3015 GD Rotterdam,
The Netherlands
| | - Luuk W L De Klerk
- Department of Orthopedic surgery, Sint Maartensclinic,
6500 GM Nijmegen, The
Netherlands
| | - M Carola Zillikens
- Department of Internal Medicine, Division of Endocrinology, Erasmus Medical
Center, University Medical Center Rotterdam, 3015 GD
Rotterdam, The Netherlands
- ENDO-ERN (European Reference Network)
- Academic Center for Rare Bone Disorders, Erasmus Medical Center, University
Medical Center Rotterdam, 3015 GD Rotterdam,
The Netherlands
- European Reference Network for rare bone diseases (ERN BOND)
| | - Aart J van der Lely
- Department of Internal Medicine, Division of Endocrinology, Erasmus Medical
Center, University Medical Center Rotterdam, 3015 GD
Rotterdam, The Netherlands
| | - Laura C G de Graaff
- Correspondence: Laura de Graaff, MD, PhD, Dept. of Internal Medicine, Erasmus
MC, University Medical Center, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands.
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64
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Barrea L, Vetrani C, Fintini D, de Alteriis G, Panfili FM, Bocchini S, Verde L, Colao A, Savastano S, Muscogiuri G. Prader-Willi Syndrome in Adults: An Update On Nutritional Treatment and Pharmacological Approach. Curr Obes Rep 2022; 11:263-276. [PMID: 36063285 PMCID: PMC9729321 DOI: 10.1007/s13679-022-00478-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/23/2022] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW Prader-Willi syndrome (PWS) is a rare and complex genetic disorder with multiple effects on the metabolic, endocrine, and neurological systems, as well as behavioral and intellectual difficulties. Despite advances in understanding the genetic basis of obesity in PWS, there are conflicting data on its management. Therefore, the present manuscript aims to provide an update on the nutritional treatment and pharmacological approach in adult patients with PWS. RECENT FINDINGS The management of obesity in patients with PWS is challenging and requires the cooperation of an experienced multidisciplinary team, including the nutritionist. An adequate clinical evaluation including nutritional and biochemical parameters should be performed to tailor the best therapeutic strategy. Both lifestyle and pharmacological interventions may represent useful strategies to prevent the high rate of morbidity and mortality related to PWS. The use of bariatric surgery is still controversial. Although it is imperative to adopt an obesity prevention strategy in childhood, there is promising evidence for the treatment of obesity in adulthood with current obesity medications in conjunction with lifestyle interventions.
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Affiliation(s)
- Luigi Barrea
- Dipartimento Di Scienze Umanistiche, Centro Direzionale, Università Telematica Pegaso, Via Porzioisola F2, 80143 Naples, Italy
- Department of Clinical Medicine and Surgery, Endocrinology Unit, Centro Italiano Per La Cura E Il Benessere del Paziente Con Obesità (C.I.B.O), University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Claudia Vetrani
- Department of Clinical Medicine and Surgery, Endocrinology Unit, Centro Italiano Per La Cura E Il Benessere del Paziente Con Obesità (C.I.B.O), University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- grid.4691.a0000 0001 0790 385XDipartimento Di Medicina Clinica E Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Danilo Fintini
- grid.414125.70000 0001 0727 6809Endocrinology Unit, Bambino Gesù Children Hospital, Reference Center for Prader–Willi Syndrome, Rome, Italy
| | - Giulia de Alteriis
- Department of Clinical Medicine and Surgery, Endocrinology Unit, Centro Italiano Per La Cura E Il Benessere del Paziente Con Obesità (C.I.B.O), University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- grid.4691.a0000 0001 0790 385XDipartimento Di Medicina Clinica E Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Filippo Maria Panfili
- grid.6530.00000 0001 2300 0941School of Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Sarah Bocchini
- grid.414125.70000 0001 0727 6809Endocrinology Unit, Bambino Gesù Children Hospital, Reference Center for Prader–Willi Syndrome, Rome, Italy
| | - Ludovica Verde
- Department of Clinical Medicine and Surgery, Endocrinology Unit, Centro Italiano Per La Cura E Il Benessere del Paziente Con Obesità (C.I.B.O), University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- grid.4691.a0000 0001 0790 385XDipartimento Di Medicina Clinica E Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Annamaria Colao
- Department of Clinical Medicine and Surgery, Endocrinology Unit, Centro Italiano Per La Cura E Il Benessere del Paziente Con Obesità (C.I.B.O), University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- grid.4691.a0000 0001 0790 385XDipartimento Di Medicina Clinica E Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- grid.4691.a0000 0001 0790 385XCattedra Unesco “Educazione Alla Salute E Allo Sviluppo Sostenibile”, University Federico II, Naples, Italy
| | - Silvia Savastano
- Department of Clinical Medicine and Surgery, Endocrinology Unit, Centro Italiano Per La Cura E Il Benessere del Paziente Con Obesità (C.I.B.O), University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- grid.4691.a0000 0001 0790 385XDipartimento Di Medicina Clinica E Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Giovanna Muscogiuri
- Department of Clinical Medicine and Surgery, Endocrinology Unit, Centro Italiano Per La Cura E Il Benessere del Paziente Con Obesità (C.I.B.O), University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- grid.4691.a0000 0001 0790 385XDipartimento Di Medicina Clinica E Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- grid.4691.a0000 0001 0790 385XCattedra Unesco “Educazione Alla Salute E Allo Sviluppo Sostenibile”, University Federico II, Naples, Italy
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Salminen I, Read S, Crespi B. Do the diverse phenotypes of Prader-Willi syndrome reflect extremes of covariation in typical populations? Front Genet 2022; 13:1041943. [PMID: 36506301 PMCID: PMC9731222 DOI: 10.3389/fgene.2022.1041943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 11/01/2022] [Indexed: 11/25/2022] Open
Abstract
The phenotypes of human imprinted neurogenetic disorders can be hypothesized as extreme alterations of typical human phenotypes. The imprinted neurogenetic disorder Prader-Willi syndrome (PWS) features covarying phenotypes that centrally involve altered social behaviors, attachment, mood, circadian rhythms, and eating habits, that can be traced to altered functioning of the hypothalamus. Here, we conducted analyses to investigate the extent to which the behavioral variation shown in typical human populations for a set of PWAS-associated traits including autism spectrum cognition, schizotypal cognition, mood, eating, and sleeping phenotypes shows covariability that recapitulates the covariation observed in individuals with PWS. To this end, we collected data from 296 typical individuals for this set of phenotypes, and showed, using principal components analysis, evidence of a major axis reflecting key covarying PWS traits. We also reviewed the literature regarding neurogenetic syndromes that overlap in their affected traits with PWS, to determine their prevalence and properties. These findings demonstrate that a notable suite of syndromes shows phenotypic overlap with PWS, implicating a large set of imprinted and non-imprinted genes, some of which interact, in the phenotypes of this disorder. Considered together, these findings link variation in and among neurogenetic disorders with variation in typical populations, especially with regard to pleiotropic effects mediated by the hypothalamus. This work also implicates effects of imprinted gene variation on cognition and behavior in typical human populations.
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Wu N, Yu H, Xu M. Alteration of brain nuclei in obese children with and without Prader-Willi syndrome. Front Neuroinform 2022; 16:1032636. [DOI: 10.3389/fninf.2022.1032636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/31/2022] [Indexed: 11/19/2022] Open
Abstract
Introduction: Prader-Willi syndrome (PWS) is a multisystem genetic imprinting disorder mainly characterized by hyperphagia and childhood obesity. Extensive structural alterations are expected in PWS patients, and their influence on brain nuclei should be early and profound. To date, few studies have investigated brain nuclei in children with PWS, although functional and structural alterations of the cortex have been reported widely.Methods: In the current study, we used T1-weighted magnetic resonance imaging to investigate alterations in brain nuclei by three automated analysis methods: shape analysis to evaluate the shape of 14 cerebral nuclei (bilateral thalamus, caudate, putamen, globus pallidus, hippocampus, amygdala, and nucleus accumbens), automated segmentation methods integrated in Freesurfer 7.2.0 to investigate the volume of hypothalamic subregions, and region of interest-based analysis to investigate the volume of deep cerebellar nuclei (DCN). Twelve age- and sex-matched children with PWS, 18 obese children without PWS (OB) and 18 healthy controls participated in this study.Results: Compared with control and OB individuals, the PWS group exhibited significant atrophy in the bilateral thalamus, pallidum, hippocampus, amygdala, nucleus accumbens, right caudate, bilateral hypothalamus (left anterior-inferior, bilateral posterior, and bilateral tubular inferior subunits) and bilateral DCN (dentate, interposed, and fastigial nuclei), whereas no significant difference was found between the OB and control groups.Discussion: Based on our evidence, we suggested that alterations in brain nuclei influenced by imprinted genes were associated with clinical manifestations of PWS, such as eating disorders, cognitive disability and endocrine abnormalities, which were distinct from the neural mechanisms of obese children.
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Higgs MJ, Hill MJ, John RM, Isles AR. Systematic investigation of imprinted gene expression and enrichment in the mouse brain explored at single-cell resolution. BMC Genomics 2022; 23:754. [PMID: 36384442 PMCID: PMC9670596 DOI: 10.1186/s12864-022-08986-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 11/02/2022] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Although a number of imprinted genes are known to be highly expressed in the brain, and in certain brain regions in particular, whether they are truly over-represented in the brain has never been formally tested. Using thirteen single-cell RNA sequencing datasets we systematically investigated imprinted gene over-representation at the organ, brain region, and cell-specific levels. RESULTS We established that imprinted genes are indeed over-represented in the adult brain, and in neurons particularly compared to other brain cell-types. We then examined brain-wide datasets to test enrichment within distinct brain regions and neuron subpopulations and demonstrated over-representation of imprinted genes in the hypothalamus, ventral midbrain, pons and medulla. Finally, using datasets focusing on these regions of enrichment, we identified hypothalamic neuroendocrine populations and the monoaminergic hindbrain neurons as specific hotspots of imprinted gene expression. CONCLUSIONS These analyses provide the first robust assessment of the neural systems on which imprinted genes converge. Moreover, the unbiased approach, with each analysis informed by the findings of the previous level, permits highly informed inferences about the functions on which imprinted gene expression converges. Our findings indicate the neuronal regulation of motivated behaviours such as feeding and sleep, alongside the regulation of pituitary function, as functional hotspots for imprinting. This adds statistical rigour to prior assumptions and provides testable predictions for novel neural and behavioural phenotypes associated with specific genes and imprinted gene networks. In turn, this work sheds further light on the potential evolutionary drivers of genomic imprinting in the brain.
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Affiliation(s)
- M J Higgs
- Centre for Neuropsychiatric Genetics and Genomics, Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, Cardiff, UK
| | - M J Hill
- School of Medicine, UK Dementia Research Institute, Cardiff University, Cardiff, UK
| | - R M John
- School of Biosciences, Cardiff University, Cardiff, UK
| | - A R Isles
- Centre for Neuropsychiatric Genetics and Genomics, Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, Cardiff, UK.
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Butler MG, Cowen N, Bhatnagar A. Prader-Willi syndrome, deletion subtypes, and magnesium: Potential impact on clinical findings. Am J Med Genet A 2022; 188:3278-3286. [PMID: 36190479 PMCID: PMC9548494 DOI: 10.1002/ajmg.a.62928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 01/31/2023]
Abstract
Prader-Willi syndrome is a complex neurodevelopmental genetic imprinting disorder with severe congenital hypotonia, failure to thrive with learning and behavioral problems, and hyperphagia with obesity developing in early childhood. Those with the typical 15q11-q13 Type I deletion compared with the smaller Type II deletion have more severe neurobehavioral problems and differ by the absence of four genes in the 15q11.2 BP1-BP2 region. Two of the genes encode magnesium transporters supporting brain and neurological function and we report on magnesium levels in the two deletion groups of PWS participants. We measured baseline plasma magnesium and analyzed data from a PWS cohort with and without the Type I or Type II deletion. Significantly lower plasma magnesium levels were found in PWS participants with the larger Type I deletion and more so with females with Type I deletion compared with females having the Type II deletion, although magnesium levels remained within normal range in both subgroups. Those with PWS and the larger 15q11-q13 Type I deletion were more clinically affected than those with the smaller Type II deletion. Two of the four genes missing in those with the larger deletion code for magnesium transporters and may impact magnesium levels. Our study showed lower magnesium levels in those with the larger deletion which could contribute to neurobehavioral differences seen in the two separate 15q11-q13 deletion subtypes and in addition affect both glucose and insulin metabolism impacting comorbidities but will require more research.
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Affiliation(s)
- Merlin G Butler
- Department of Psychiatry & Behavioral Sciences and Pediatrics, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Neil Cowen
- Soleno Therapeutics, Inc., Redwood City, California, USA
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Ghosh R, Ray A, Roy D, Benito-Leon J. Hoffman's syndrome as the presenting manifestation of non-primary hypothyroidism in a case of Prader-Willi Syndrome. Neurologia 2022; 37:824-827. [PMID: 36468432 DOI: 10.1016/j.nrleng.2022.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 01/01/2022] [Indexed: 11/05/2022] Open
Affiliation(s)
- R Ghosh
- Department of General Medicine, Burdwan, West Bengal, India
| | - A Ray
- R G Kar Medical College & Hospital, Kolkata, West Bengal, India
| | - D Roy
- Department of Biochemistry, All India Institute of Medical Sciences (AIIMS), Jodhpur, Rajasthan, India; Indian Institute of Technology (IIT), Madras, Tamil Nadu, India
| | - J Benito-Leon
- Department of Neurology, University Hospital "12 de Octubre", Madrid, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain; Department of Medicine, Complutense University, Madrid, Spain.
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70
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Mariani M, Fintini D, Cirillo G, Palumbo S, Del Giudice EM, Bocchini S, Manco M, Cappa M, Grandone A. MKRN3 circulating levels in Prader-Willi syndrome: a pilot study. J Endocrinol Invest 2022; 45:2165-2170. [PMID: 35854182 DOI: 10.1007/s40618-022-01860-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 07/03/2022] [Indexed: 10/17/2022]
Abstract
CONTEXT Hypogonadism in Prader-Willi syndrome (PWS) is generally attributed to hypothalamic dysfunction or to primary gonadal defect. MKRN3, a maternal imprinted gene located on 15q11.2-q13 region, encodes makorin ring finger protein 3, whose deficiency causes precocious puberty, an extremely rare symptom in PWS. OBJECTIVE This study aimed to evaluate MKRN3 levels in patients with PWS and to analyze its correlation with sexual hormone levels, insulin resistance and Body Mass Index (BMI). METHODS We performed an observational cross-sectional study and enrolled 80 patients with genetically confirmed diagnosis of PWS with median age of 9.6 years. RESULTS MKRN3 levels were measurable in 49 PWS patients with a geometric mean of 34.9 ± 22 pg/ml (median: 28.4). Unmeasurable levels of MKRN3 were found in 31 patients. No statistically significant differences were found between patients with and without measurable MKRN3 levels for any clinical, biochemical, or genetic characteristics. However, MKRN3 levels were inversely correlated with HOMA-IR index (p: 0.005) and HbA1c (p: 0.046) values. No statistically significant correlations were found between MKRN3 and LH, estradiol and testosterone concentrations, pubertal development and genetic defect, whereas a direct correlation with FSH was found (p: 0.007). CONCLUSIONS The typical genetic defect of PWS should lead to unmeasurable levels of the MKRN3 protein due to the inactivation of the paternal allele. Measurable circulating MKRN3 could suggest the possible involvement of tissue-specific imprinting mechanisms and other regulatory factors in gene expression. Correlations with HOMA-IR index, HbA1c, and FSH suggest peripheral actions of MKRN3, but future studies are warranted to investigate this topic.
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Affiliation(s)
- M Mariani
- Endocrinology Unit, University Pediatric Department, Bambino Gesù Children's Hospital, Piazza S.Onofrio, 4, 00165, Rome, Italy.
| | - D Fintini
- Endocrinology Unit, University Pediatric Department, Bambino Gesù Children's Hospital, Piazza S.Onofrio, 4, 00165, Rome, Italy
| | - G Cirillo
- Department of Woman, Child, General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - S Palumbo
- Department of Woman, Child, General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - E M Del Giudice
- Department of Woman, Child, General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - S Bocchini
- Endocrinology Unit, University Pediatric Department, Bambino Gesù Children's Hospital, Piazza S.Onofrio, 4, 00165, Rome, Italy
| | - M Manco
- Research Area for Multifactorial Diseases and Complex Phenotypes, Bambino Gesù Children's Hospital, Rome, Italy
| | - M Cappa
- Endocrinology Unit, University Pediatric Department, Bambino Gesù Children's Hospital, Piazza S.Onofrio, 4, 00165, Rome, Italy
| | - A Grandone
- Department of Woman, Child, General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
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Oto Y, Murakami N, Nakagawa R, Itoh M, Nagai T, Matsubara T. Three pediatric cases of symptomatic hyponatremia in Prader-Willi syndrome. J Pediatr Endocrinol Metab 2022; 35:1302-1305. [PMID: 35822720 DOI: 10.1515/jpem-2022-0127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 06/20/2022] [Indexed: 11/15/2022]
Abstract
OBJECTIVES A recent large retrospective cohort study of cases of hyponatremia in Prader-Willi syndrome (PWS), conducted at nine reference centers, showed that severe hyponatremia was rare in PWS (0.5%); furthermore, all cases involved adults. Here, we describe three pediatric cases of severe hyponatremia in PWS, with neurological symptoms. CASE PRESENTATION The cases involved two girls and one boy, and only one patient showed uniparental disomy. All patients had hyponatremia during infancy and presented with clinical symptoms, such as convulsions. All three patients improved with intravenous fluids and fluid restriction, with no sequelae. CONCLUSIONS We report three pediatric cases of symptomatic hyponatremia of unknown cause in PWS. In patients with PWS, especially those with neurological symptoms such as convulsions, it is necessary to take hyponatremia into consideration.
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Affiliation(s)
- Yuji Oto
- Department of Pediatrics, Dokkyo Medical University Saitama Medical Center, Saitama, Japan
| | - Nobuyuki Murakami
- Department of Pediatrics, Dokkyo Medical University Saitama Medical Center, Saitama, Japan
| | - Ryo Nakagawa
- Department of Pediatrics, The University of Tokyo Hospital, Tokyo, Japan
| | - Masatsune Itoh
- Department of Pediatrics, Kanazawa Medical University, Kanazawa, Japan
| | | | - Tomoyo Matsubara
- Department of Pediatrics, Dokkyo Medical University Saitama Medical Center, Saitama, Japan
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Sledziowska M, Winczura K, Jones M, Almaghrabi R, Mischo H, Hebenstreit D, Garcia P, Grzechnik P. Non-coding RNAs associated with Prader-Willi syndrome regulate transcription of neurodevelopmental genes in human induced pluripotent stem cells. Hum Mol Genet 2022; 32:608-620. [PMID: 36084040 PMCID: PMC9896466 DOI: 10.1093/hmg/ddac228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 08/05/2022] [Accepted: 09/03/2022] [Indexed: 02/07/2023] Open
Abstract
Mutations and aberrant gene expression during cellular differentiation lead to neurodevelopmental disorders, such as Prader-Willi syndrome (PWS), which results from the deletion of an imprinted locus on paternally inherited chromosome 15. We analyzed chromatin-associated RNA in human induced pluripotent cells (iPSCs) upon depletion of hybrid small nucleolar long non-coding RNAs (sno-lncRNAs) and 5' snoRNA capped and polyadenylated long non-coding RNAs (SPA-lncRNAs) transcribed from the locus deleted in PWS. We found that rapid ablation of these lncRNAs affects transcription of specific gene classes. Downregulated genes contribute to neurodevelopment and neuronal maintenance, while upregulated genes are predominantly involved in the negative regulation of cellular metabolism and apoptotic processes. Our data reveal the importance of SPA-lncRNAs and sno-lncRNAs in controlling gene expression in iPSCs and provide a platform for synthetic experimental approaches in PWS studies. We conclude that ncRNAs transcribed from the PWS locus are critical regulators of a transcriptional signature, which is important for neuronal differentiation and development.
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Affiliation(s)
- Monika Sledziowska
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Kinga Winczura
- School of Biological Sciences, University of Manchester, Michael Smith Building, Oxford Road, Manchester M13 9PT, UK
| | - Matt Jones
- School of Life Sciences, Gibbet Hill Campus, University of Warwick, Coventry CV4 7AL, UK
| | - Ruba Almaghrabi
- Institute for Cancer and Genomic Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Hannah Mischo
- School of Immunology & Microbial Sciences, King’s College London, London SE1 9RT, UK
| | - Daniel Hebenstreit
- School of Life Sciences, Gibbet Hill Campus, University of Warwick, Coventry CV4 7AL, UK
| | - Paloma Garcia
- Institute for Cancer and Genomic Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK,Birmingham Centre for Genome Biology, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Pawel Grzechnik
- To whom correspondence should be addressed at: School of Biological Sciences, University of Manchester, Michael Smith Building, Oxford Road, Manchester M13 9PT, UK.
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Roy A, Naranje KM, Mandal K, Singh A. A Hypotonic Neonate. Neoreviews 2022; 23:e641-e644. [PMID: 36047756 DOI: 10.1542/neo.23-9-e641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Abhijeet Roy
- Department of Neonatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Kirti M Naranje
- Department of Neonatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Kausik Mandal
- Department of Medical Genetics, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Anita Singh
- Department of Neonatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
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Wieting J, Jahn K, Buchholz V, Lichtinghagen R, Deest-Gaubatz S, Bleich S, Eberlein CK, Deest M, Frieling H. Alteration of serum leptin and LEP/LEPR promoter methylation in Prader-Willi syndrome. Psychoneuroendocrinology 2022; 143:105857. [PMID: 35803048 DOI: 10.1016/j.psyneuen.2022.105857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 05/29/2022] [Accepted: 06/28/2022] [Indexed: 11/25/2022]
Abstract
Prader-Willi syndrome (PWS) is a rare neurodevelopmental disorder based on a loss of paternally expressed but maternally imprinted genes in chromosome region 15q11-13. PWS individuals typically show insatiable appetite with subsequent obesity representing the major mortality factor unless food intake is inhibited. The neurobiological basis of PWS-typical hyperphagia has remained poorly understood. Many PWS-typical abnormalities are based on hypothalamic dysregulation, a region in which hunger and satiety are hormonally regulated, with the hormone leptin being a main long-term regulator of satiety. Previous studies in PWS have inconsistently shown leptin alterations solely in early childhood, without investigating the leptin system on an epigenetic level. The present study investigates serum leptin levels (S-leptin) and DNA methylation of the leptin (LEP) and leptin receptor gene (LEPR) promoter in 24 individuals with PWS compared to 13 healthy controls matched for sex, age, and body mass index (BMI) and relates the results to the extent of hyperphagia in PWS. S-Leptin levels were obtained by Enzyme-linked Immunosorbent Assay. LEP/LEPR-promoter DNA methylation was assessed by bisulfite-sequencing, hyperphagia by Hyperphagia Questionnaire for Clinical Trials (HQ-CT). PWS and control groups differed significantly in S-leptin levels with higher S-leptin in PWS. Methylation analysis showed significant differences in mean promoter methylation rate both for LEP and LEPR with a lower methylation rate in PWS. LEPR, but not LEP methylation correlated significantly with S-leptin levels. S-leptin and both LEP and LEPR methylation did not correlate with HQ-CT scores in PWS. The present study is the first to show significantly elevated S-leptin levels in an adult PWS cohort combined with an altered, downregulated LEP and LEPR promoter methylation status compared to sex-, age- and BMI-matched controls. Analogous to previous studies, no link to the behavioral dimension could be drawn. Overall, the results suggest an increased leptin dysregulation in PWS, whereby the findings partly mirror those seen in non-syndromic obesity.
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Affiliation(s)
- Jelte Wieting
- Hannover Medical School, Department for Psychiatry, Social Psychiatry and Psychotherapy, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
| | - Kirsten Jahn
- Hannover Medical School, Department for Psychiatry, Social Psychiatry and Psychotherapy, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Vanessa Buchholz
- Hannover Medical School, Department for Psychiatry, Social Psychiatry and Psychotherapy, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Ralf Lichtinghagen
- Hannover Medical School, Department for Clinical Chemistry, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Stephanie Deest-Gaubatz
- Hannover Medical School, Department for Psychiatry, Social Psychiatry and Psychotherapy, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Stefan Bleich
- Hannover Medical School, Department for Psychiatry, Social Psychiatry and Psychotherapy, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Christian K Eberlein
- Hannover Medical School, Department for Psychiatry, Social Psychiatry and Psychotherapy, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Maximilian Deest
- Hannover Medical School, Department for Psychiatry, Social Psychiatry and Psychotherapy, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Helge Frieling
- Hannover Medical School, Department for Psychiatry, Social Psychiatry and Psychotherapy, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
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Deest M, Wieting J, Jakob MM, Deest-Gaubatz S, Groh A, Seifert J, Toto S, Bleich S, Frieling H, Eberlein CK. Aripiprazole treatment for temper outbursts in Prader-Willi syndrome. Orphanet J Rare Dis 2022; 17:324. [PMID: 36028863 PMCID: PMC9419314 DOI: 10.1186/s13023-022-02470-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 08/13/2022] [Indexed: 11/17/2022] Open
Abstract
Background Prader–Willi syndrome (PWS) is a rare neurodevelopmental disorder based on a loss of paternally expressed genes in chromosome segment 15q11-13. Behavioral traits such as temper outbursts, stereotypic, and ritualistic behavior, as well as an increased risk of psychosis accompany the syndrome, representing a major issue in the treatment of adults with PWS. Up to now, no treatment guideline for these conditions in PWS exist. This study aimed to retrospectively analyze the effect and adverse effects of treatment with aripiprazole for temper outbursts in 10 adults with PWS.
Results Aripiprazole was prescribed for temper outbursts (n = 10). Treatment outcome was assessed using the Clinical Global Impression-Severity (CGI-S) and -Improvement Scale (CGI-I). Treatment success (CGI-I < 3) was observed in 70% of cases, with adverse effects from mild to partly serious extent in 60% of cases. The major adverse effect observed was increased daytime sleepiness. In total, 50% of the individuals were treated successfully for temper outbursts. The BMI did not change significantly in the successfully treated group after 6 months of treatment. Conclusions Aripiprazole can be a treatment option for temper outbursts in people with PWS. Although a high rate of side effects was detected, their severity led to discontinuation in only 20% of the cases. Furthermore, the absence of weight gain makes aripiprazole interesting especially for the PWS population.
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Affiliation(s)
- Maximilian Deest
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany.
| | - Jelte Wieting
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Maximilian Michael Jakob
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Stephanie Deest-Gaubatz
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Adrian Groh
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Johanna Seifert
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Sermin Toto
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Stefan Bleich
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Helge Frieling
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Christian K Eberlein
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
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Atypical 15q11.2-q13 Deletions and the Prader-Willi Phenotype. J Clin Med 2022; 11:jcm11154636. [PMID: 35956251 PMCID: PMC9369699 DOI: 10.3390/jcm11154636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/04/2022] [Accepted: 08/06/2022] [Indexed: 11/17/2022] Open
Abstract
Background: Prader-Willi syndrome (PWS) is a rare genetic disorder resulting from the lack of expression of the PWS region (locus q11-q13) on the paternally derived chromosome 15, as a result of a type I or II paternal deletion (50%), maternal uniparental disomy (43%), imprinting defect (4%) or translocation (<1%). In very rare cases, atypical deletions, smaller or larger than the typical deletion, are identified. These patients may have distinct phenotypical features and provide further information regarding the genotype−phenotype correlation in PWS. Methods: A prospective study in eight patients (six males and two females) with an atypical deletion in the PWS region accompanies an overview of reported cases. Results: All patients had hypotonia (100%) and many had typical PWS facial characteristics (75%), social and emotional developmental delays (75%), intellectual disabilities (50%), neonatal feeding problems and tube feeding (63%), history of obesity (50%), hyperphagia (50%) and scoliosis (50%). All males had cryptorchidism. Two patients had two separate deletions in the PWS critical region. Conclusions: Our findings provide further insight into PWS genotype−phenotype correlations; our results imply that inclusion of both SNURF-SNPRN and SNORD-116 genes in the deletion leads to a more complete PWS phenotype. A larger deletion, extending further upstream and downstream from these genes, does not cause a more severe phenotype. Conventional PWS methylation testing may miss small deletions, which can be identified using targeted next generation sequencing. PWS’s phenotypic diversity might be caused by differentially methylated regions outside the 15q11.2 locus.
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Oxytocin-based therapies for treatment of Prader-Willi and Schaaf-Yang syndromes: evidence, disappointments, and future research strategies. Transl Psychiatry 2022; 12:318. [PMID: 35941105 PMCID: PMC9360032 DOI: 10.1038/s41398-022-02054-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 06/23/2022] [Accepted: 07/01/2022] [Indexed: 11/09/2022] Open
Abstract
The prosocial neuropeptide oxytocin is being developed as a potential treatment for various neuropsychiatric disorders including autism spectrum disorder (ASD). Early studies using intranasal oxytocin in patients with ASD yielded encouraging results and for some time, scientists and affected families placed high hopes on the use of intranasal oxytocin for behavioral therapy in ASD. However, a recent Phase III trial obtained negative results using intranasal oxytocin for the treatment of behavioral symptoms in children with ASD. Given the frequently observed autism-like behavioral phenotypes in Prader-Willi and Schaaf-Yang syndromes, it is unclear whether oxytocin treatment represents a viable option to treat behavioral symptoms in these diseases. Here we review the latest findings on intranasal OT treatment, Prader-Willi and Schaaf-Yang syndromes, and propose novel research strategies for tailored oxytocin-based therapies for affected individuals. Finally, we propose the critical period theory, which could explain why oxytocin-based treatment seems to be most efficient in infants, but not adolescents.
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Dimitropoulos A, Doernberg EA, Russ SW, Zyga O. Intervention Response by Genetic Subtype: PRETEND-Preschool Program for Children with Prader-Willi Syndrome via Remote Parent Training. J Autism Dev Disord 2022; 52:5191-5206. [PMID: 35932366 PMCID: PMC9361891 DOI: 10.1007/s10803-022-05695-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/20/2022] [Indexed: 11/30/2022]
Abstract
Prader-Willi Syndrome (PWS) is a rare neurodevelopmental disorder associated with social cognitive challenges, and pretend play has been demonstrated as a tool to achieve developmental goals. Following previous report on feasibility and acceptability of a remote, play-based parent-training program (Zyga, Russ, & Dimitropoulos, 2018), we now report on preliminary efficacy of this program to enhance pretend play skills and social cognitive skills in preschoolers with PWS. Results across two studies demonstrated efficacy when live-coaching play sessions incorporated children into the intervention. Increases in play skills were observed for children with the mUPD subtype of PWS who underwent intervention, compared with children with mUPD who were waitlisted. Children with DEL subtype were less likely to respond to intervention. Implications for results are discussed.
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Affiliation(s)
| | | | | | - Olena Zyga
- Cleveland Clinic Center for Autism, Rocky River, OH, USA
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Pathophysiology of Nociception and Rare Genetic Disorders with Increased Pain Threshold or Pain Insensitivity. PATHOPHYSIOLOGY 2022; 29:435-452. [PMID: 35997391 PMCID: PMC9397076 DOI: 10.3390/pathophysiology29030035] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/31/2022] [Accepted: 08/01/2022] [Indexed: 11/16/2022] Open
Abstract
Pain and nociception are different phenomena. Nociception is the result of complex activity in sensory pathways. On the other hand, pain is the effect of interactions between nociceptive processes, and cognition, emotions, as well as the social context of the individual. Alterations in the nociceptive route can have different genesis and affect the entire sensorial process. Genetic problems in nociception, clinically characterized by reduced or absent pain sensitivity, compose an important chapter within pain medicine. This chapter encompasses a wide range of very rare diseases. Several genes have been identified. These genes encode the Nav channels 1.7 and 1.9 (SCN9A, and SCN11A genes, respectively), NGFβ and its receptor tyrosine receptor kinase A, as well as the transcription factor PRDM12, and autophagy controllers (TECPR2). Monogenic disorders provoke hereditary sensory and autonomic neuropathies. Their clinical pictures are extremely variable, and a precise classification has yet to be established. Additionally, pain insensitivity is described in diverse numerical and structural chromosomal abnormalities, such as Angelman syndrome, Prader Willy syndrome, Chromosome 15q duplication syndrome, and Chromosome 4 interstitial deletion. Studying these conditions could be a practical strategy to better understand the mechanisms of nociception and investigate potential therapeutic targets against pain.
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Abstract
Growth hormone (GH) is an injectable medication originally used to replace the deficiency of the hormone, but has expanded to treating conditions that may reduce growth and adult height even when the body maintains endogenous GH production. In the United States, there are 8 Food and Drug Administration (FDA)-approved indications for pediatric GH therapy: GH deficiency, Prader-Willi Syndrome, small for gestational age (SGA) without catch-up growth, idiopathic short stature, Turner syndrome, SHOX gene haploinsufficiency, Noonan Syndrome, and chronic renal insufficiency. We characterize the growth patterns and effects of GH treatment in each of these indications. We also review patterns of growth that warrant referral to a pediatric endocrinologist, as well as safety updates. This review is intended to guide practitioners on the initial evaluation and management of patients with short stature, and the indications for GH therapy.
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Affiliation(s)
- Melinda Danowitz
- CHOP Division of Pediatric Endocrinology, Abramson Building, Office 804F, 3401 Civic Center Boulevard, Philadelphia, PA 19104, USA
| | - Adda Grimberg
- Children's Hospital of Philadelphia, The Hub for Clinical Collaboration, Division of Endocrinology, 7th floor, 3500 Civic Center Boulevard, Philadelphia, PA 19104, USA; Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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Robustness of Distinctive Facial Features in Prader-Willi Syndrome: A Stereophotogrammetric Analysis and Association with Clinical and Biochemical Markers in Adult Individuals. BIOLOGY 2022; 11:biology11081148. [PMID: 36009775 PMCID: PMC9405094 DOI: 10.3390/biology11081148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/18/2022] [Accepted: 07/27/2022] [Indexed: 11/17/2022]
Abstract
Background: Prader-Willi syndrome (PWS) is a rare genomic imprinting disorder associated to a complex neurodevelopmental phenotype and a distinctive facial appearance. The study investigated the relationships between the quantitative facial dysmorphism in PWS and clinical and biochemical markers of the disease and its treatment. Methods: Facial images of 15 Caucasian adult individuals with PWS (8 males, 42 ± 5 years; 7 females, 37 ± 8 years; BMI 38.87 ± 8.92 kg/m2) were acquired through stereophotogrammetry. From the 3D coordinates of 38 landmarks, linear distances and angles were calculated; they were expressed as z-score values by referring to 403 healthy subjects matched for age and sex and compared by Student’s t-test with Bonferroni correction for multiple testing. Patients underwent auxological and biochemical assessment of endocrine/metabolic dysfunction and nocturnal respiratory function. An exploratory correlation analysis was performed to investigate their associations with the facial phenotype; uncorrected p-values were used. Results and Conclusions: Individuals with PWS showed decreased bifrontal diameter, facial depths, palpebral fissures, mandibular ramus length, lower vermillion height, and modified relative position of exocanthia and nasion. Since these characteristics did not show any associations with clinical and biochemical markers of PWS, they could constitute robust distinctive facial features and contribute to the diagnosis of the disorder. Individuals with PWS showed also a larger mandibular width with smaller gonial angles, thinner upper vermillion, greater inclination of the orbit relative to the Frankfurt plane, and a smaller angle of the auricles versus the facial midplane. Relationships between these facial anthropometric features and body composition, glucidic metabolism indexes, nocturnal hypoxemia episodes, or duration of GH treatment were found, suggesting their potentially useful role in the clinical monitoring and management of the disease. However, they need to be confirmed by subsequent dedicated studies.
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Zhang L, Liu X, Zhao Y, Wang Q, Zhang Y, Gao H, Zhang B, Cui W, Zhao Y. Genetic subtypes and phenotypic characteristics of 110 patients with Prader-Willi syndrome. Ital J Pediatr 2022; 48:121. [PMID: 35870983 PMCID: PMC9308266 DOI: 10.1186/s13052-022-01319-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 07/07/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Prader-Willi syndrome (PWS) is a complex disorder caused by impaired paternally expressed genes on chromosome 15q11-q13. Variable findings have been reported about the phenotypic differences among PWS genetic subtypes. METHODS A total of 110 PWS patients were diagnosed from 8,572 pediatric patients included from July 2013 to December 2021 by MLPA and MS-MLPA assays. Atypical deletions were defined by genomic CNV-sequencing. Maternal uniparental disomy (UPD) was subgrouped by microsatellite genotyping. Clinical data were collected for phenotype-genotype associations. Twenty-one patients received growth hormone (GH) treatment, and the anthropometric and laboratory parameters were evaluated and compared. RESULTS Genetically, the 110 patients with PWS included 29 type I deletion, 56 type II deletion, 6 atypical deletion, 11 heterodisomy UPD, and 8 isodisomy UPD. The UPD group had significantly higher maternal age (31.4 ± 3.4 vs 27.8 ± 3.8 years), more anxiety (64.29% vs 26.09%) and autistic traits (57.14% vs 26.09%), and less hypopigmentation (42.11% vs 68.24%) and skin picking (42.86% vs 71.01%) than the deletion group. The type I deletion group was diagnosed at earlier age (3.7 ± 3.3 vs 6.2 ± 3.2 years) and more common in speech delay (95.45% vs 63.83%) than the type II. The isodisomy UPD group showed a higher tendency of anxiety (83.33% vs 50%) than the heterodisomy. GH treatment for 1 year significantly improved the SDS of height (- 0.43 ± 0.68 vs - 1.32 ± 1.19) and IGF-I (- 0.45 ± 0.48 vs - 1.97 ± 1.12). No significant changes were found in thyroid function or glucose/lipid metabolism. CONCLUSION We explored the physical, psychological and behavioral phenotype-genotype associations as well as the GH treatment effect on PWS from a large cohort of Chinese pediatric patients. Our data might promote pediatricians' recognition and early diagnosis of PWS.
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Affiliation(s)
- Lu Zhang
- Department of Clinical Genetics, Shengjing Hospital of China Medical University, No 36 Sanhao Street, Heping Ward, Shenyang, 110004, China
| | - Xiaoliang Liu
- Department of Clinical Genetics, Shengjing Hospital of China Medical University, No 36 Sanhao Street, Heping Ward, Shenyang, 110004, China
| | - Yunjing Zhao
- Department of Developmental Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qingyi Wang
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Boston, MA, USA
| | - Yuanyuan Zhang
- Department of Clinical Genetics, Shengjing Hospital of China Medical University, No 36 Sanhao Street, Heping Ward, Shenyang, 110004, China
| | - Haiming Gao
- Department of Clinical Genetics, Shengjing Hospital of China Medical University, No 36 Sanhao Street, Heping Ward, Shenyang, 110004, China
| | - Bijun Zhang
- Department of Clinical Genetics, Shengjing Hospital of China Medical University, No 36 Sanhao Street, Heping Ward, Shenyang, 110004, China
| | - Wanting Cui
- Department of Clinical Genetics, Shengjing Hospital of China Medical University, No 36 Sanhao Street, Heping Ward, Shenyang, 110004, China
| | - Yanyan Zhao
- Department of Clinical Genetics, Shengjing Hospital of China Medical University, No 36 Sanhao Street, Heping Ward, Shenyang, 110004, China.
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Sena KD, Beierle JA, Richardson KT, Kantak KM, Bryant CD. Assessment of Binge-Like Eating of Unsweetened vs. Sweetened Chow Pellets in BALB/c Substrains. Front Behav Neurosci 2022; 16:944890. [PMID: 35910681 PMCID: PMC9337213 DOI: 10.3389/fnbeh.2022.944890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 06/22/2022] [Indexed: 11/13/2022] Open
Abstract
Binge eating disorder (BED) is defined as chronic episodes of consuming large amounts of food in less than 2 h. Binge eating disorder poses a serious public health problem, as it increases the risk of obesity, type II diabetes, and heart disease. Binge eating is a highly heritable trait; however, its genetic basis remains largely unexplored. We employed a mouse model for binge eating that focused on identifying heritable differences between inbred substrains in acute and escalated intake of sucrose-sweetened palatable food vs. unsweetened chow pellets in a limited, intermittent access paradigm. In the present study, we examined two genetically similar substrains of BALB/c mice for escalation in food consumption, incubation of craving after a no-food training period, and compulsive-like food consumption in an aversive context. BALB/cJ and BALB/cByJ mice showed comparable levels of acute and escalated consumption of palatable food across training trials. Surprisingly, BALB/cByJ mice also showed binge-like eating of the unsweetened chow pellets similar to the escalation in palatable food intake of both substrains. Finally, we replicated the well-documented decrease in anxiety-like behavior in BALB/cByJ mice in the light-dark conflict test that likely contributed to greater palatable food intake than BALB/cJ in the light arena. To summarize, BALB/cByJ mice show binge-like eating in the presence and absence of sucrose. Possible explanations for the lack of selectivity in binge-like eating across diets (e.g., novelty preference, taste) are discussed.
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Affiliation(s)
- Katherine D. Sena
- Laboratory of Addiction Genetics, Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, United States
| | - Jacob A. Beierle
- Laboratory of Addiction Genetics, Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, United States
| | - Kayla T. Richardson
- Laboratory of Addiction Genetics, Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, United States
| | - Kathleen M. Kantak
- Department of Psychological and Brain Sciences, Boston University, Boston, MA, United States
| | - Camron D. Bryant
- Laboratory of Addiction Genetics, Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, United States
- *Correspondence: Camron D. Bryant
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84
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Alcantara IC, Tapia APM, Aponte Y, Krashes MJ. Acts of appetite: neural circuits governing the appetitive, consummatory, and terminating phases of feeding. Nat Metab 2022; 4:836-847. [PMID: 35879462 PMCID: PMC10852214 DOI: 10.1038/s42255-022-00611-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 06/16/2022] [Indexed: 12/11/2022]
Abstract
The overconsumption of highly caloric and palatable foods has caused a surge in obesity rates in the past half century, thereby posing a healthcare challenge due to the array of comorbidities linked to heightened body fat accrual. Developing treatments to manage body weight requires a grasp of the neurobiological basis of appetite. In this Review, we discuss advances in neuroscience that have identified brain regions and neural circuits that coordinate distinct phases of eating: food procurement, food consumption, and meal termination. While pioneering work identified several hypothalamic nuclei to be involved in feeding, more recent studies have explored how neuronal populations beyond the hypothalamus, such as the mesolimbic pathway and nodes in the hindbrain, interconnect to modulate appetite. We also examine how long-term exposure to a calorically dense diet rewires feeding circuits and alters the response of motivational systems to food. Understanding how the nervous system regulates eating behaviour will bolster the development of medical strategies that will help individuals to maintain a healthy body weight.
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Affiliation(s)
- Ivan C Alcantara
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), National Institutes of Health, Bethesda, MD, USA
- Department of Neuroscience, Brown University, Providence, RI, USA
| | | | - Yeka Aponte
- National Institute on Drug Abuse (NIDA), National Institutes of Health, Baltimore, MD, USA.
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - Michael J Krashes
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), National Institutes of Health, Bethesda, MD, USA.
- National Institute on Drug Abuse (NIDA), National Institutes of Health, Baltimore, MD, USA.
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85
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Angulo MA, Butler MG, Hossain WA, Castro-Magana M, Corletto J. Central adrenal insufficiency screening with morning plasma cortisol and ACTH levels in Prader-Willi syndrome. J Pediatr Endocrinol Metab 2022; 35:733-740. [PMID: 35437976 DOI: 10.1515/jpem-2022-0074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 03/21/2022] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Prader-Willi syndrome (PWS) is a complex genetic disorder with severe hypotonia, failure to thrive, childhood obesity, hypogonadism/hypogenitalism and learning/behavioral problems with endocrine-related growth and other hormone deficiencies. The prevalence of central adrenal insufficiency (CAI) using dynamic testing ranges from rare to 60%. We compared routine morning plasma cortisol (MPC) and ACTH levels in large cohorts of PWS and control children to address CAI. METHODS Retrospective analysis of MPC and ACTH levels was undertaken in 128 PWS growth hormone (GH)-treated children under medical care before considering dynamic testing for CAI and 128 non-syndromic control children with short stature evaluated for GH deficiency. RESULTS The average MPC level in PWS was 9.7 ± 3.7 μg/dL with no difference in age, gender or PWS genetic subtype and 13.4 ± 5.7 μg/dL in the control group. MPC levels were significantly lower (p < 0.05) in PWS but in the normal range. The morning plasma ACTH level in the PWS group was 22.1 ± 8.0 pg/mL with one individual having an initial low plasma ACTH level (8 pg/mL), but normal upon repeat. CONCLUSIONS MPC levels in PWS are normal and comparable with control children, without evidence or increased risk of CAI. Lower but normal MPC levels were seen in PWS and suggestive of reduced local regeneration of cortisol from cortisone in adipose tissue by the GH-IGF-I system. Hence, MPC measures alone or in combination with ACTH should be considered for initial screening for CAI in PWS but prior to dynamic testing.
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Affiliation(s)
- Moris A Angulo
- Department of Pediatrics, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Merlin G Butler
- Departments of Psychiatry & Behavioral Sciences, University of Kansas Medical Center, Kansas City, KS, USA
| | - Waheeda A Hossain
- Departments of Psychiatry & Behavioral Sciences, University of Kansas Medical Center, Kansas City, KS, USA
| | | | - Jorge Corletto
- Department of Pediatrics, NYU Langone Hospital-Long Island, Mineola, NY, USA
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Yang-Li D, Fei-Hong L, Hui-Wen Z, Ming-Sheng M, Xiao-Ping L, Li L, Yi W, Qing Z, Yong-Hui J, Chao-Chun Z. Recommendations for the diagnosis and management of childhood Prader-Willi syndrome in China. Orphanet J Rare Dis 2022; 17:221. [PMID: 35698200 PMCID: PMC9195308 DOI: 10.1186/s13023-022-02302-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 03/23/2022] [Indexed: 11/28/2022] Open
Abstract
Prader-Willi syndrome (PWS) is a complex and multisystem neurobehavioral disease, which is caused by the lack of expression of paternally inherited imprinted genes on chromosome15q11.2-q13.1. The clinical manifestations of PWS vary with age. It is characterized by severe hypotonia with poor suck and feeding difficulties in the early infancy, followed by overeating in late infancy or early childhood and progressive development of morbid obesity unless the diet is externally controlled. Compared to Western PWS patients, Chinese patients have a higher ratio of deletion type. Although some rare disease networks, including PWS Cooperation Group of Rare Diseases Branch of Chinese Pediatric Society, Zhejiang Expert Group for PWS, were established recently, misdiagnosis, missed diagnosis and inappropriate intervention were usually noted in China. Therefore, there is an urgent need for an integrated multidisciplinary approach to facilitate early diagnosis and optimize management to improve quality of life, prevent complications, and prolong life expectancy. Our purpose is to evaluate the current literature and evidences on diagnosis and management of PWS in order to provide evidence-based guidelines for this disease, specially from China.
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Affiliation(s)
- Dai Yang-Li
- Children's Hospital of Zhejiang University School of Medicine, No. 3333 Binsheng Road, Hangzhou, 310003, China
| | - Luo Fei-Hong
- Children's Hospital of Fudan University, Shanghai, China
| | - Zhang Hui-Wen
- Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ma Ming-Sheng
- Peking Union Medical College Hospital, Beijing, China
| | - Luo Xiao-Ping
- Tongji Hospital, Tongji Medical College of HUST, Wuhan, China
| | - Liu Li
- Guangzhou Women and Children's Medical Center, Guangzhou, China
| | - Wang Yi
- Children's Hospital of Fudan University, Shanghai, China
| | - Zhou Qing
- Fujian Children's Hospital, Fuzhou, China
| | - Jiang Yong-Hui
- Yale University, 69 Lexington Gardens, Northern Haven, CT, 06473, USA.
| | - Zou Chao-Chun
- Children's Hospital of Zhejiang University School of Medicine, No. 3333 Binsheng Road, Hangzhou, 310003, China.
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Heseding HM, Jahn K, Eberlein CK, Wieting J, Maier HB, Proskynitopoulos PJ, Glahn A, Bleich S, Frieling H, Deest M. Distinct promoter regions of the oxytocin receptor gene are hypomethylated in Prader-Willi syndrome and in Prader-Willi syndrome associated psychosis. Transl Psychiatry 2022; 12:246. [PMID: 35688807 PMCID: PMC9187685 DOI: 10.1038/s41398-022-02014-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 05/23/2022] [Accepted: 05/30/2022] [Indexed: 11/12/2022] Open
Abstract
Prader-Willi syndrome (PWS) is a rare neurodevelopmental disorder caused by a loss of usually paternally expressed, maternally imprinted genes located on chromosome 15q11-q13. Individuals with PWS display a specific behavioral phenotype and have a higher susceptibility than the general population for certain psychiatric conditions, especially psychosis. An impairment of the oxytocin system has been described in Prader-Willi syndrome, but has not yet been investigated in detail on the epigenetic level. Recent studies have pointed out altered methylation patterns of the oxytocin receptor gene (OXTR) in various psychiatric disorders, including psychosis. In this study, we investigated methylation rates of CpG dinucleotides in the promoter region of the oxytocin receptor gene via bisulfite-sequencing using DNA extracted from peripheral blood samples of 31 individuals with PWS and 14 controls matched for age, sex, and BMI. Individuals with PWS show significantly lower methylation in the intron 1 region of the OXTR than neurotypical controls (p = 0.012). Furthermore, male PWS subjects with psychosis show significantly lower methylation of the OXTR exon 1 region than those without psychosis (p = 0.002). Transcription factor binding site analysis revealed E2F1 as a transcription factor potentially binding to the exon 1 region. E2F1 is physiologically regulated by Necdin, an anti-apoptotic protein whose corresponding gene is located within the PWS locus. This study provides evidence of a disruption of the Oxytocin system on an epigenetic level in PWS in general and in individuals with PWS and psychosis.
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Affiliation(s)
- Hannah M. Heseding
- grid.10423.340000 0000 9529 9877Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Kirsten Jahn
- grid.10423.340000 0000 9529 9877Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Christian K. Eberlein
- grid.10423.340000 0000 9529 9877Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Jelte Wieting
- grid.10423.340000 0000 9529 9877Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Hannah B. Maier
- grid.10423.340000 0000 9529 9877Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Phileas J. Proskynitopoulos
- grid.10423.340000 0000 9529 9877Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Alexander Glahn
- grid.10423.340000 0000 9529 9877Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Stefan Bleich
- grid.10423.340000 0000 9529 9877Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Helge Frieling
- grid.10423.340000 0000 9529 9877Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Maximilian Deest
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany.
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88
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A Review of Prader–Willi Syndrome. ENDOCRINES 2022. [DOI: 10.3390/endocrines3020027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Prader–Willi Syndrome (PWS, OMIM #176270) is a rare complex genetic disorder due to the loss of expression of paternally derived genes in the PWS critical region on chromosome 15q11-q13. It affects multiple neuroendocrine systems and may present failure to thrive in infancy, but then, hyperphagia and morbid obesity starting in early childhood became the hallmark of this condition. Short stature, hypogonadism, sleep abnormalities, intellectual disability, and behavioral disturbances highlight the main features of this syndrome. There have been a significant number of advances in our understanding of the genetic mechanisms underlying the disease, especially discoveries of MAGEL2, NDN, MKRN3, and SNORD116 genes in the pathophysiology of PWS. However, early diagnosis and difficulty in treating some of the disease’s most disabling features remain challenging. As our understanding of PWS continues to grow, so does the availability of new therapies and management strategies available to clinicians and families.
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George AJ, Dong B, Lail H, Gomez M, Hoffiz YC, Ware CB, Fang N, Murphy AZ, Hrabovszky E, Wanders D, Mabb AM. The E3 ubiquitin ligase RNF216/TRIAD3 is a key coordinator of the hypothalamic-pituitary-gonadal axis. iScience 2022; 25:104386. [PMID: 35620441 PMCID: PMC9126796 DOI: 10.1016/j.isci.2022.104386] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 03/25/2022] [Accepted: 05/05/2022] [Indexed: 11/25/2022] Open
Abstract
Recessive mutations in RNF216/TRIAD3 cause Gordon Holmes syndrome (GHS), in which dysfunction of the hypothalamic-pituitary-gonadal (HPG) axis and neurodegeneration are thought to be core phenotypes. We knocked out Rnf216/Triad3 in a gonadotropin-releasing hormone (GnRH) hypothalamic cell line. Rnf216/Triad3 knockout (KO) cells had decreased steady-state GnRH and calcium transients. Rnf216/Triad3 KO adult mice had reductions in GnRH neuron soma size and GnRH production without changes in neuron densities. In addition, KO male mice had smaller testicular volumes that were accompanied by an abnormal release of inhibin B and follicle-stimulating hormone, whereas KO females exhibited irregular estrous cycling. KO males, but not females, had reactive microglia in the hypothalamus. Conditional deletion of Rnf216/Triad3 in neural stem cells caused abnormal microglia expression in males, but reproductive function remained unaffected. Our findings show that dysfunction of RNF216/TRIAD3 affects the HPG axis and microglia in a region- and sex-dependent manner, implicating sex-specific therapeutic interventions for GHS. Rnf216/Triad3 controls GnRH production and intrinsic hypothalamic cell activity Rnf216/Triad3 knockout male mice have greater reproductive impairments than females Rnf216/Triad3 controls the HPG axis differently in males and females Rnf216/Triad3 knockout male mice have reactive microglia in the hypothalamus
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90
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Kim MS, Kim J, Cho J, Cho SY, Jin DK. Tailored management of life-threatening complications related to severe obesity in a young adult with Prader-Willi syndrome. Ann Pediatr Endocrinol Metab 2022; 27:148-152. [PMID: 34670069 PMCID: PMC9260376 DOI: 10.6065/apem.2142022.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 03/22/2021] [Indexed: 11/30/2022] Open
Abstract
Prader-Willi syndrome (PWS) is characterized by hypotonia, distinctive facial features, hyperphagia, obesity, short stature, hypogonadism, intellectual disability, and behavior problems. Uncontrolled hyperphagia can lead to dangerous food-seeking behavior and with life-threatening obesity. Severe obesity is prone to obstructive sleep apnea (OSA) and can lead to cor pulmonale. This study reports on a case involving a 21-year-old man with PWS who developed OSA due to severe obesity, which led to cor pulmonale, a life-threatening complication. Multidisciplinary care provided in the intensive care unit included weight reduction, ventilation support, antipsychotics, sedative drugs, rehabilitation, and meticulous skin care. The patient did recover. To prevent severe obesity in adults with PWS, hyperphagia must be controlled, and the patient must also be managed by an endocrinologist throughout childhood.
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Affiliation(s)
- Min-Sun Kim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jiyeon Kim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Joongbum Cho
- Department of Critical Care Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sung Yoon Cho
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea,Address for correspondence: Sung Yoon Cho Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea
| | - Dong-Kyu Jin
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea,Address for co-correspondence: Dong-Kyu Jin Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Korea
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91
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Proteins and Proteases of Prader-Willi Syndrome: A Comprehensive Review and Perspectives. Biosci Rep 2022; 42:231361. [PMID: 35621394 PMCID: PMC9208313 DOI: 10.1042/bsr20220610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/16/2022] [Accepted: 05/20/2022] [Indexed: 11/17/2022] Open
Abstract
Prader–Willi Syndrome (PWS) is a rare complex genetic disease that is associated with pathological disorders that include endocrine disruption, developmental, neurological, and physical problems as well as intellectual, and behavioral dysfunction. In early stage, PWS is characterized by respiratory distress, hypotonia, and poor sucking ability, causing feeding concern and poor weight gain. Additional features of the disease evolve over time. These include hyperphagia, obesity, developmental, cognitive delay, skin picking, high pain threshold, short stature, growth hormone deficiency, hypogonadism, strabismus, scoliosis, joint laxity, or hip dysplasia. The disease is associated with a shortened life expectancy. There is no cure for PWS, although interventions are available for symptoms management. PWS is caused by genetic defects in chromosome 15q11.2-q13, and categorized into three groups, namely Paternal deletion, Maternal uniparental disomy, and Imprinting defect. PWS is confirmed through genetic testing and DNA-methylation analysis. Studies revealed that at least two key proteins namely MAGEL-2 and NECDIN along with two proteases PCSK1 and PCSK2 are linked to PWS. Herein, we summarize our current understanding and knowledge about the role of these proteins and enzymes in various biological processes associated with PWS. The review also describes how loss and/or impairment of functional activity of these macromolecules can lead to hormonal disbalance by promoting degradation of secretory granules and via inhibition of proteolytic maturation of precursor-proteins. The present review will draw attention of researchers, scientists, and academicians engaged in PWS study and will help to identify potential targets and molecular pathways for PWS intervention and treatment.
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92
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Ben-Cnaan E, Permyakova A, Azar S, Hirsch S, Baraghithy S, Hinden L, Tam J. The Metabolic Efficacy of a Cannabidiolic Acid (CBDA) Derivative in Treating Diet- and Genetic-Induced Obesity. Int J Mol Sci 2022; 23:ijms23105610. [PMID: 35628417 PMCID: PMC9144717 DOI: 10.3390/ijms23105610] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/15/2022] [Accepted: 05/16/2022] [Indexed: 11/16/2022] Open
Abstract
Obesity is a global medical problem; its common form is known as diet-induced obesity (DIO); however, there are several rare genetic disorders, such as Prader-Willi syndrome (PWS), that are also associated with obesity (genetic-induced obesity, GIO). The currently available therapeutics for treating DIO and GIO are very limited, and they result in only a partial improvement. Cannabidiolic acid (CBDA), a constituent of Cannabis sativa, gradually decarboxylates to cannabidiol (CBD). Whereas the anti-obesity properties of CBD have been reasonably identified, our knowledge of the pharmacology of CBDA is more limited due to its instability. To stabilize CBDA, a new derivative, CBDA-O-methyl ester (HU-580, EPM301), was synthesized. The therapeutic potential of EPM301 in appetite reduction, weight loss, and metabolic improvements in DIO and GIO was tested in vivo. EPM301 (40 mg/kg/d, i.p.) successfully resulted in weight loss, increased ambulation, as well as improved glycemic and lipid profiles in DIO mice. Additionally, EPM301 ameliorated DIO-induced hepatic dysfunction and steatosis. Importantly, EPM301 (20 and 40 mg/kg/d, i.p.) effectively reduced body weight and hyperphagia in a high-fat diet-fed Magel2null mouse model for PWS. In addition, when given to standard-diet-fed Magel2null mice as a preventive treatment, EPM301 completely inhibited weight gain and adiposity. Lastly, EPM301 increased the oxidation of different nutrients in each strain. All together, EPM301 ameliorated obesity and its metabolic abnormalities in both DIO and GIO. These results support the idea to further promote this synthetic CBDA derivative toward clinical evaluation in humans.
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93
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Sani E, Prato GD, Zenti MG, Bordugo A, Trombetta M, Bonora E. Effects of Semaglutide on Glycemic Control and Weight Loss in a Patient with Prader-Willi Syndrome: A Case Report. Endocr Metab Immune Disord Drug Targets 2022; 22:1053-1057. [PMID: 35538810 DOI: 10.2174/1871530322666220509225637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/11/2022] [Accepted: 03/25/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Prader-Willi syndrome is the most frequent genetic cause of obesity and is often complicated by glucose metabolism alterations. Conventional therapies prescribed in type 2 diabetes frequently failed to achieve adequate glycemic control in patients with Prader-Willi syndrome. Beneficial effects of glucagon like peptide-1 receptor agonists exenatide and liraglutide have been reported for the management of type 2 diabetes in Prader-Willi syndrome, but no data are currently available in this population on the use of semaglutide. CASE PRESENTATION We report for the first time the use of semaglutide 1 mg per week in a 33-year-old man with Prader-Will syndrome complicated by poor controlled diabetes and severe obesity. After 12 months of semaglutide treatment, we observed an important reduction in glycated hemoglobin levels (11.1% to 7.2%) and body weight (99.5 kg to 94.3 kg), with also a notable decrease in fat mass and insulin requirements. Interestingly, our patient had already tried liraglutide therapy in adjunction to metformin and insulin therapy, reporting no substantial efficacy. CONCLUSIONS The beneficial effects of semaglutide on glycemic control and weight reduction provide a promising treatment for diabetes and obesity in Prader-Willi syndrome, even where other glucagons like peptide-1 receptor agonists have failed. Further studies are required to confirm the efficacy and safety of semaglutide in patients with Prader-Willi syndrome.
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Affiliation(s)
- Elena Sani
- Inherited Metabolic Diseases Unit and Regional Centre for Newborn Screening, Diagnosis and Treatment of Inherited Metabolic Diseases and Congenital Endocrine Diseases, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Giuliana Da Prato
- Inherited Metabolic Diseases Unit and Regional Centre for Newborn Screening, Diagnosis and Treatment of Inherited Metabolic Diseases and Congenital Endocrine Diseases, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Maria Grazia Zenti
- Inherited Metabolic Diseases Unit and Regional Centre for Newborn Screening, Diagnosis and Treatment of Inherited Metabolic Diseases and Congenital Endocrine Diseases, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Andrea Bordugo
- Inherited Metabolic Diseases Unit and Regional Centre for Newborn Screening, Diagnosis and Treatment of Inherited Metabolic Diseases and Congenital Endocrine Diseases, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Maddalena Trombetta
- Inherited Metabolic Diseases Unit and Regional Centre for Newborn Screening, Diagnosis and Treatment of Inherited Metabolic Diseases and Congenital Endocrine Diseases, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Enzo Bonora
- Inherited Metabolic Diseases Unit and Regional Centre for Newborn Screening, Diagnosis and Treatment of Inherited Metabolic Diseases and Congenital Endocrine Diseases, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
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94
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Turkkahraman D, Sirazi EC, Aykal G. Serum alpha-melanocyte-stimulating hormone (a-MSH), brain-derived neurotrophic factor (BDNF), and agouti-related protein (AGRP) levels in children with Prader-Willi or Bardet-Biedl syndromes. J Endocrinol Invest 2022; 45:1031-1037. [PMID: 35098494 DOI: 10.1007/s40618-021-01737-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 12/21/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Although leptin/melanocortin pathway pathologies in hypothalamus are thought to be the main cause of early-onset obesity and hyperphagia in PWS and BBS, the exact mechanism is still not known. OBJECTIVE To measure serum concentrations of a-MSH, BDNF and AGRP in a group of children with BBS or PWS. METHODS We recruited 12 subjects with PWS, 12 subjects with BBS, 28 obese controls (OC) and 26 lean controls (LC) matched for age, sex and puberty. Serum a-MSH, BDNF and AGRP levels were measured by the ELISA method. RESULTS The mean a-MSH level was lower in PWS than those of OC and LC (3729 ± 1319, 5211 ± 829 and 5681 ± 565 pg/ml, respectively, p < 0.001), and mean a-MSH was lower in OC than LC (p < 0.05). The mean BDNF level of PWS was higher than those of OC and LC (565 ± 122, 482 ± 102 and 391 ± 74 pg/ml, respectively, p < 0.001). On the other hand, mean a-MSH level of BBS was lower than those of OC and LC (4543 ± 658, 5211 ± 829 and 5681 ± 565 pg/ml, respectively, p < 0.001), and mean a-MSH was lower in OC than LC (p < 0.05). The mean BDNF level of BBS was higher than those of OC and LC (583 ± 115, 482 ± 102 and 391 ± 74 pg/ml, respectively, p < 0.001). Additionally, both in PWS and BBS, the mean BDNF level was higher in OC than LC (p < 0.01). Regarding AGRP level, there was no difference both in BBS and PWS compared to OC. CONCLUSION We found that the serum a-MSH levels of PWS and BBS groups are significantly lower compared to those of obese and lean controls. Therefore, we can speculate that the circulating a-MSH level does properly reflect its central production, and the serum a-MSH level might be a good biomarker to detect a-MSH deficiency in individuals suspected to have BBS or PWS, and also in those with POMC, PCSK1, and LEPR deficiency.
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Affiliation(s)
- D Turkkahraman
- Department of Pediatric Endocrinology, Antalya Training and Research Hospital, University of Health Sciences, Antalya, Turkey.
| | - E C Sirazi
- Department of Pediatrics, Antalya Training and Research Hospital, Antalya, Turkey
| | - G Aykal
- Department of Biochemistry, Antalya Training and Research Hospital, Antalya, Turkey
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95
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Deest M, Buchholz V, Jahn K, Eberlein C, Bleich S, Frieling H. Hypomethylation of monoamine oxidase A promoter/exon 1 region is associated with temper outbursts in Prader-Willi syndrome. J Psychiatr Res 2022; 149:359-366. [PMID: 34782122 DOI: 10.1016/j.jpsychires.2021.11.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 10/06/2021] [Accepted: 11/06/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Prader-Willi syndrome (PWS) is a rare neurodevelopmental disorder caused by the absence of paternally expressed and maternally imprinted genes on chromosome 15q 11.2-13. It is associated with a certain behavioural phenotype, especially temper outbursts with verbal and physical aggression towards others. Recent studies show a promising therapeutic effect of serotonin reuptake inhibitors like sertraline on frequency and intensity of outbursts. Monoamine oxidase A (MAOA) (X p11.23) plays a crucial role in the metabolism of monoamines. Dysregulation in methylation of the CpG island spanning the promoter region and exon 1 of MAOA is implicated in impulsive and aggressive behaviour. METHODS In the present study, methylation rates of CpG dinucleotides in the MAOA promoter and exon 1 region were determined from DNA derived from whole blood samples of PWS patients (n = 32) and controls (n = 14) matched for age, sex and BMI via bisulfite sequencing. PWS patients were grouped into those showing temper outbursts, and those who do not. RESULTS Overall, PWS patients show a significant lower methylation rate at the promoter/exon 1 region than healthy controls in both sexes. Furthermore, PWS patients, male as well female with temper outbursts show a significant lower methylation rate than those without temper outbursts (p < 0.001 and p = 0.006). CONCLUSION The MAOA promoter/exon 1 region methylation seems to be dysregulated in PWS patients in sense of a hypomethylation, especially in those suffering from temper outbursts. This dysregulation probably plays a crucial role in the pathophysiology of temper outbursts in PWS.
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Affiliation(s)
- Maximilian Deest
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Medical School Hannover, Hannover, Germany.
| | - Vanessa Buchholz
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Medical School Hannover, Hannover, Germany
| | - Kirsten Jahn
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Medical School Hannover, Hannover, Germany
| | - Christian Eberlein
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Medical School Hannover, Hannover, Germany
| | - Stefan Bleich
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Medical School Hannover, Hannover, Germany
| | - Helge Frieling
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Medical School Hannover, Hannover, Germany
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96
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Matesevac L, Miller JL, McCandless SE, Malloy JL, Bohonowych JE, Vrana-Diaz C, Strong TV. Thrombosis Risk History and D-dimer Levels in Asymptomatic Individuals with Prader-Willi Syndrome. J Clin Med 2022; 11:jcm11072040. [PMID: 35407648 PMCID: PMC9000191 DOI: 10.3390/jcm11072040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 03/29/2022] [Accepted: 04/01/2022] [Indexed: 12/12/2022] Open
Abstract
Individuals with Prader–Willi syndrome (PWS) may be at higher risk of developing blood clots as compared to the typical population, but this risk is poorly understood. It is also unclear if laboratory testing of D-dimer concentration might be useful to screen for thrombosis in PWS. Here, we surveyed the thrombosis history of 883 individuals with PWS and evaluated the D-dimer concentration in a subset of 214 asymptomatic individuals, ages 5–55. A history of at least one blood clot was reported by 3.6% of respondents. Thrombosis increased with age, but no significant difference was found on the basis of sex or family history. Genetic subtype was a significant factor when considering only those with a known subtype, and individuals with a history of edema had significantly more blood clots. In the D-dimer sub-study, ≈15% of participants had high D-dimer concentrations, and 3.7% had D-dimer values more than twice the normal upper limit. One participant with a high D-dimer result was found to have a blood clot. No significant differences in D-dimer results were found on the basis of age, sex, genetic subtype, family history of blood clots, edema history, or BMI. The D-dimer test does not appear to be a sensitive and specific screening tool for blood clots in asymptomatic individuals with PWS.
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Affiliation(s)
- Lisa Matesevac
- Foundation for Prader–Willi Research, Walnut, CA 91789, USA; (L.M.); (J.E.B.); (C.V.-D.)
| | - Jennifer L. Miller
- Department of Pediatrics, College of Medicine, University of Florida, Gainesville, FL 32611, USA;
| | - Shawn E. McCandless
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA;
| | | | - Jessica E. Bohonowych
- Foundation for Prader–Willi Research, Walnut, CA 91789, USA; (L.M.); (J.E.B.); (C.V.-D.)
| | - Caroline Vrana-Diaz
- Foundation for Prader–Willi Research, Walnut, CA 91789, USA; (L.M.); (J.E.B.); (C.V.-D.)
| | - Theresa V. Strong
- Foundation for Prader–Willi Research, Walnut, CA 91789, USA; (L.M.); (J.E.B.); (C.V.-D.)
- Correspondence: ; Tel.: +1-888-322-5487 (ext. 702)
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97
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Predictive factors of responsiveness to a body weight reduction program in Prader-Willi patients at 6 years of follow-up. Sci Rep 2022; 12:5182. [PMID: 35338212 PMCID: PMC8956576 DOI: 10.1038/s41598-022-09096-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 03/16/2022] [Indexed: 11/08/2022] Open
Abstract
Prader-Willi syndrome (PWS), a multisystemic disorder caused by lack of expression of genes on the paternally inherited chromosome 15q11.2-q13 region, is characterized by hyperphagia and childhood-onset morbid obesity, A retrospective cohort study of 60 PWS patients, 38 females and 22 males, undergoing a 6-year rehabilitation program was analysed. Mean age at the time of first admission was 27 ± 7 years, body weight (BW) was 97 kg ± 29 kg and height was 1.53 ± 0.09 m. Twenty-four patients (40%) showed BW loss after 6 years of follow-up, seventeen (28%) remained stable and nineteen (32%) gained BW. Responsiveness in term of BW reduction was less frequent in patients with the UPD karyotype, karyotype del15 being more frequent among responsive patients. Furthermore, responsive PWS subjects had a higher BMI (47 vs. 36 kg/m2), waist (123 vs. 106 cm) and hip (136 vs. 118 cm) circumferences than non-responsive at the time of first hospitalization. Baseline body composition and metabolic parameters did not differentiate between responsive and non-responsive patients. Given the rarity of PWS and relative lack of studies, these results can be considered relevant because based on a relatively large number of PWS patients followed up for a long term period.
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98
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Susaimanickam PJ, Kiral FR, Park IH. Region Specific Brain Organoids to Study Neurodevelopmental Disorders. Int J Stem Cells 2022; 15:26-40. [PMID: 35220290 PMCID: PMC8889336 DOI: 10.15283/ijsc22006] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 01/17/2022] [Indexed: 12/03/2022] Open
Abstract
Region specific brain organoids are brain organoids derived by patterning protocols using extrinsic signals as opposed to cerebral organoids obtained by self-patterning. The main focus of this review is to discuss various region-specific brain organoids developed so far and their application in modeling neurodevelopmental disease. We first discuss the principles of neural axis formation by series of growth factors, such as SHH, WNT, BMP signalings, that are critical to generate various region-specific brain organoids. Then we discuss various neurodevelopmental disorders modeled so far with these region-specific brain organoids, and findings made on mechanism and treatment options for neurodevelopmental disorders (NDD).
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Affiliation(s)
- Praveen Joseph Susaimanickam
- Department of Genetics, Yale Stem Cell Center, Yale Child Study Center, Yale School of Medicine, New Haven, CT, USA
| | - Ferdi Ridvan Kiral
- Department of Genetics, Yale Stem Cell Center, Yale Child Study Center, Yale School of Medicine, New Haven, CT, USA
| | - In-Hyun Park
- Department of Genetics, Yale Stem Cell Center, Yale Child Study Center, Yale School of Medicine, New Haven, CT, USA
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99
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Vasconcelos G, Stenehjem JS, Axelsson S, Saeves R. Craniofacial and dentoalveolar morphology in individuals with Prader-Willi syndrome: a case-control study. Orphanet J Rare Dis 2022; 17:77. [PMID: 35193626 PMCID: PMC8864885 DOI: 10.1186/s13023-022-02222-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 02/06/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Prader-Willi syndrome (PWS) is a complex multisystem genetic disorder with distinct genetic and clinical features. Among other clinical symptoms, PWS is characterized by severe infantile hypotonia with feeding problems, childhood onset hyperphagia, obesity, scoliosis, short stature combined with growth hormone deficiency and developmental delay. PWS is associated with facial dysmorphology, orofacial dysfunction, oral abnormalities, low salivary flow and subsequent severe tooth wear. Little is known about the craniofacial growth direction or dental and skeletal relationships in individuals with PWS in different ages. The purpose of this study was to assess the craniofacial and dentoalveolar characteristics and to investigate the craniofacial growth direction separately in children, young adults and adults with PWS, using a cephalometric analysis of lateral cephalograms. RESULTS Lateral cephalograms of 42 individuals with a confirmed genetic diagnosis of PWS were analysed and divided into three groups according to their age: Children (< 12 years), young adults (12-20 years) and adults (> 20 years). Cephalometric variables were compared between PWS patients and controls by age and sex. Significant deviations and distinct craniofacial patterns were found in children, young adults and adults with PWS compared with the control group. Children showed retrognatic mandible with a skeletal class II relationship, posterior growth direction and longer anterior face height. The young adults had smaller cranial base angle, a skeletal class II pattern and a higher anterior lower face than the control group. Adults with PWS had a prognathic mandible, skeletal class III relationship with anterior growth direction, more retroclined lower incisors and proclined upper incisors than the controls. Similar results were found when comparing the three groups with PWS; the adults had a prognathic mandible, skeletal class III pattern and anterior growth direction. Children had a retropositioned mandibula, skeletal class II relationship and posterior growth direction. CONCLUSION This study may contribute to a better understanding of the craniofacial growth pattern in children, young adults and adults with PWS and may have a clinical importance when planning dental treatment, such as prosthodontics and/or orthodontics.
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Affiliation(s)
- Gisela Vasconcelos
- TAKO-Centre, National Resource Centre for Oral Health in Rare Medical Conditions, Lovisenberg Diaconal Hospital, Pb 4970 Nydalen, 0440, Oslo, Norway.
| | - Jo S Stenehjem
- Department of Biostatistics, Oslo Centre for Biostatistics and Epidemiology, University of Oslo, Oslo, Norway.,Department of Research, Cancer Registry of Norway, Oslo, Norway
| | - Stefan Axelsson
- TAKO-Centre, National Resource Centre for Oral Health in Rare Medical Conditions, Lovisenberg Diaconal Hospital, Pb 4970 Nydalen, 0440, Oslo, Norway
| | - Ronnaug Saeves
- TAKO-Centre, National Resource Centre for Oral Health in Rare Medical Conditions, Lovisenberg Diaconal Hospital, Pb 4970 Nydalen, 0440, Oslo, Norway
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100
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Jia G, Cui Y, Shi L, Luan J, Wang J, Han J. Generation of a non-integrated induced pluripotent stem cell line(SMBCi011-A)from a patient with Prader–Willi syndrome. Stem Cell Res 2022; 60:102695. [DOI: 10.1016/j.scr.2022.102695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/15/2022] [Accepted: 01/28/2022] [Indexed: 10/19/2022] Open
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