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Dong Y, Lu R, Cao H, Zhang J, Wu X, Deng Y, Li JD. Deficiency in Prader-Willi syndrome gene necdin leads to attenuated cardiac contractility. iScience 2024; 27:109974. [PMID: 38832028 PMCID: PMC11144731 DOI: 10.1016/j.isci.2024.109974] [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: 09/25/2023] [Revised: 01/02/2024] [Accepted: 05/10/2024] [Indexed: 06/05/2024] Open
Abstract
Prader-Willi syndrome (PWS) is a genetic disorder characterized by behavioral disturbances, hyperphagia, and intellectual disability. Several surveys indicate that PWS is also associated with cardiac abnormalities, possibly contributing to a high incidence of sudden death. However, the pathological mechanisms underlying cardiac dysfunction in PWS remain unclear. In this study, we found that deficiency in necdin, an intronless gene within PWS region, led to heart systolic and diastolic dysfunction in mice. Through yeast two-hybrid screening, we identified an interaction between necdin and non-muscle myosin regulatory light chain 12a/b (MYL12 A/B). We further showed that necdin stabilized MYL12 A/B via SGT1-heat shock protein 90 (HSP90) chaperone machinery. The zebrafish lacking the MYL12 A/B analog, MYL12.1, exhibited impaired heart function, while cardiac-specific overexpression of MYL12A normalized the heart dysfunction in necdin-deficient mice. Our findings revealed necdin dysfunction as a contributing factor to cardiomyopathy in PWS patients and emphasized the importance of HSP90 chaperone machinery and non-muscle myosin in heart fitness.
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Affiliation(s)
- Yufan Dong
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, Hunan, P.R. China
- National Clinical Research Center for Geriatric Disorder, Xiangya Hospital, Central South University, Changsha 410078, Hunan, P.R. China
| | - Renbin Lu
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, Hunan, P.R. China
- National Clinical Research Center for Geriatric Disorder, Xiangya Hospital, Central South University, Changsha 410078, Hunan, P.R. China
| | - Hui Cao
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, China
- Laboratory of Zebrafish Genetics, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Jing Zhang
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, Hunan, P.R. China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha 410078, Hunan, P.R. China
- Hunan Key Laboratory of Medical Genetics, Changsha 410078, Hunan, P.R. China
| | - Xiushan Wu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, China
- Laboratory of Zebrafish Genetics, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Yun Deng
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, China
- Laboratory of Zebrafish Genetics, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Jia-Da Li
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, Hunan, P.R. China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha 410078, Hunan, P.R. China
- Hunan Key Laboratory of Medical Genetics, Changsha 410078, Hunan, P.R. China
- Hunan International Scientific and Technological Cooperation Base of Animal Models for Human Diseases, Changsha 410078, Hunan, P.R. China
- National Clinical Research Center for Geriatric Disorder, Xiangya Hospital, Central South University, Changsha 410078, Hunan, P.R. China
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Alba R, Omidvarnia S, Bies JJ, Carlson T, Alfaori Q, Htay T. Complex Cardiovascular Morbidities in Prader-Willi Syndrome: A Multidisciplinary Approach. Cureus 2024; 16:e56591. [PMID: 38646247 PMCID: PMC11031429 DOI: 10.7759/cureus.56591] [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] [Accepted: 03/19/2024] [Indexed: 04/23/2024] Open
Abstract
This case emphasizes the complexity of Prader-Willi syndrome (PWS), the need for a collaborative approach from specialists, and a closer look at the various cardiovascular complexities associated with this syndrome. While current treatments focus on managing symptoms, ongoing genetic research offers hope for more favorable outcomes. Further studies are crucial to gauge the effectiveness of these treatments for PWS patients. We detail a patient with a complex medical history of PWS, further complicated by congenital heart disease with Eisenmenger's syndrome, diabetes mellitus, pulmonary hypertension, venous insufficiency, hypothyroidism, and hyperlipidemia. Reported in this study is a compilation of clinical data as well as suggestions from several medical specialists in applying a multifaceted approach to treatment, significantly emphasizing the need for interdisciplinary care and management of patients experiencing a combination of various medical issues with an emphasis on cardiovascular complications.
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Affiliation(s)
- Raul Alba
- Internal Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, USA
| | - Soroush Omidvarnia
- Medicine, Texas Tech University Health Science Center El Paso, El Paso, USA
| | - Jared J Bies
- Internal Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, USA
| | - Tim Carlson
- Internal Medicine, Texas Tech University Health Science Center El Paso, El Paso, USA
| | - Qusay Alfaori
- Internal Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, USA
| | - Thwe Htay
- Medical Education, Texas Tech University Health Sciences Center El Paso, El Paso, USA
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Thomas C, Mandilaras G, Rabenhorst D, Oberhoffer FS, Fischer M, Haas NA, Fernandez Rodriguez S. Vagal Asystoles in a Boy With Prader-Willi Syndrome. Pediatrics 2023; 152:e2022058216. [PMID: 37539482 DOI: 10.1542/peds.2022-058216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/13/2023] [Indexed: 08/05/2023] Open
Abstract
Prader-Willi syndrome (PWS) is a genetic hormonal disorder of the hypothalamic-pituitary-axis resulting in mental retardation, muscle hypotonia, hypogonadism, and hyperphagia leading to significant obesity. Cardiovascular morbidity and mortality in adult patients with PWS is higher than in healthy controls and mainly secondary to massive obesity. In childhood, mortality may result from respiratory or gastrointestinal illnesses. We present a case of a 10-year-old boy with PWS who experienced recurrent and asymptomatic episodes of sinus pauses caused by the ingestion of large gulps of apple juice, which could be provoked and reproduced. The asystoles could not be provoked by any other vagal maneuvers and an initial diagnostic workup revealed no indication for structural heart disease. Because of the asymptomatic character of the asystoles, no treatment was initially provided. When he re-presented 3 months later after a clinically relevant syncope at school, pacemaker therapy was initiated, and he has demonstrated no subsequent sinus pauses or syncopes. Regarding the rising awareness of subtle cardiac alterations including autonomic dysfunction and electrocardiogram changes in young patients with PWS and especially the occurrence of unexplained sudden deaths in childhood that may be precipitated by arrhythmia, we suggest that the utility of periodic screening for arrhythmia risk should be evaluated in children with PWS.
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Affiliation(s)
- Clara Thomas
- Department of Pediatric Cardiology and Intensive Care, Medical Hospital of the University of Munich, Ludwig Maximilians University Munich, Munich, Germany
| | - Guido Mandilaras
- Department of Pediatric Cardiology and Intensive Care, Medical Hospital of the University of Munich, Ludwig Maximilians University Munich, Munich, Germany
| | - Dorothee Rabenhorst
- Department of Pediatric Cardiology and Intensive Care, Medical Hospital of the University of Munich, Ludwig Maximilians University Munich, Munich, Germany
| | - Felix S Oberhoffer
- Department of Pediatric Cardiology and Intensive Care, Medical Hospital of the University of Munich, Ludwig Maximilians University Munich, Munich, Germany
| | - Marcus Fischer
- Department of Pediatric Cardiology and Intensive Care, Medical Hospital of the University of Munich, Ludwig Maximilians University Munich, Munich, Germany
| | - Nikolaus A Haas
- Department of Pediatric Cardiology and Intensive Care, Medical Hospital of the University of Munich, Ludwig Maximilians University Munich, Munich, Germany
| | - Silvia Fernandez Rodriguez
- Department of Pediatric Cardiology and Intensive Care, Medical Hospital of the University of Munich, Ludwig Maximilians University Munich, Munich, Germany
- med4kidz Kinder- und Jugendmedizinisches Zentrum, Herz und Lungenzentrum Bayreuth, Bayreuth, Germany
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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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Kobayashi S, Murakami N, Oto Y, Toide H, Kimura N, Hayashi A, Higashi A, Inami S, Tanaka J, Koshikawa Y, Mizutani Y, Nakahara S, Ishikawa T, Sakai Y, Taguchi I. Subtle Cardiovascular Abnormalities in Prader-Willi Syndrome Might Begin in Young Adulthood. Intern Med 2021; 60:3377-3384. [PMID: 34719624 PMCID: PMC8627814 DOI: 10.2169/internalmedicine.7073-21] [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] [Indexed: 11/09/2022] Open
Abstract
Objective Patients with Prader-Willi syndrome (PWS) are known to have a high mortality rate. However, little is known about the exact reason for this, particularly in adults, because so few reports have been published. The present study examined cardiovascular abnormalities to determine the cause of death in adults with PWS. Methods From September 2017 to April 2019, a total of 18 adults with PWS, and, no history of cardiovascular diseases, were enrolled. We investigated the levels of the cardiovascular biomarkers: high-sensitivity C-reactive protein (hs-CRP) and troponin T (TnT). To estimate the cardiac function, we measured the left ventricular ejection fraction (LVEF), global longitudinal systolic strain (GLS) of the left ventricle, ratio of peak early mitral filling velocity (E) to early diastolic mitral annular velocity (E/e' ratio), mitral annular plane systolic excursion (MAPSE) and tricuspid annular plane systolic excursion (TAPSE) using standard and tissue Doppler echocardiography. Results The mean patient age was 28±9 years old. There were 11 men, and the mean body mass index was 45.1 kg/m2. Dyslipidemia (82%), diabetes mellitus (82%) and hypertension (83%) were commonly found as comorbidities. Most patients had elevated levels of hs-CRP (mean 1.007±0.538 mg/dL). The LVEF (mean 61%±5%) showed normal values, while the GLS (mean 15.0%±3.0%) was decreased. The TAPSE was mildly reduced (mean 16±3 mm). Conclusion These results suggest that subtle cardiovascular abnormalities have already begun in young adults with PWS. We need to manage obesity and the resultant obesity-related disorders in order to prevent heart failure and coronary atherosclerosis in PWS patients.
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Affiliation(s)
- Sayuki Kobayashi
- Department of Cardiology, Dokkyo Medical University, Saitama Medical Center, Japan
- Ultrasound Diagnostic Center, Dokkyo Medical University, Saitama Medical Center, Japan
| | - Nobuyuki Murakami
- Department of Pediatrics, Dokkyo Medical University, Saitama Medical Center, Japan
| | - Yuji Oto
- Department of Pediatrics, Dokkyo Medical University, Saitama Medical Center, Japan
| | - Hiroyuki Toide
- Ultrasound Diagnostic Center, Dokkyo Medical University, Saitama Medical Center, Japan
| | - Noriko Kimura
- Ultrasound Diagnostic Center, Dokkyo Medical University, Saitama Medical Center, Japan
| | - Akiko Hayashi
- Department of Cardiology, Dokkyo Medical University, Saitama Medical Center, Japan
| | - Ayako Higashi
- Department of Cardiology, Dokkyo Medical University, Saitama Medical Center, Japan
| | - Syu Inami
- Department of Cardiovascular medicine, Dokkyo Medical University Hospital, Japan
| | - Jun Tanaka
- Department of Cardiology, Mitsui Memorial Hospital, Japan
| | - Yuri Koshikawa
- Department of Cardiology, Dokkyo Medical University, Saitama Medical Center, Japan
| | - Yukiko Mizutani
- Department of Cardiology, Dokkyo Medical University, Saitama Medical Center, Japan
| | - Shiro Nakahara
- Department of Cardiology, Dokkyo Medical University, Saitama Medical Center, Japan
| | - Tetsuya Ishikawa
- Department of Cardiology, Dokkyo Medical University, Saitama Medical Center, Japan
| | - Yoshihiko Sakai
- Department of Cardiology, Dokkyo Medical University, Saitama Medical Center, Japan
| | - Isao Taguchi
- Department of Cardiology, Dokkyo Medical University, Saitama Medical Center, Japan
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Brito LC, Queiroga T, Franco RR, Passone CGB, Lopes MC, Shea SA, Bueno C, Soster LMSFA. Cardiac autonomic control during non-REM and REM sleep stages in paediatric patients with Prader-Willi syndrome. J Sleep Res 2020; 30:e13165. [PMID: 32812310 DOI: 10.1111/jsr.13165] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/10/2020] [Accepted: 07/21/2020] [Indexed: 11/29/2022]
Abstract
Cardiac death is the second most prevalent cause in Prader-Willi syndrome (PWS). Paediatric patients with PWS often present cardiac autonomic dysfunction during wakefulness, obesity and sleep-disordered breathing. However, the extent of cardiac autonomic modulation during sleep in PWS has not been documented. The objective of this study was to assess alterations in cardiac autonomic modulation of paediatric patients with PWS during different sleep stages. Thirty-nine participants in three groups: 14 PWS, 13 sex and age-matched lean controls (LG) and 12 obese-matched controls (OB). All participants underwent overnight polysomnography, including continuous electrocardiogram recordings. Heart rate variability (HRV) was analysed during representative periods of each sleep stage through time and frequency domains calculated across 5-min periods. Between-within ANOVAs were employed (p < .05). The results show that total HRV was lower in PWS than OB and LG during slow-wave sleep (SWS) (standard deviation of all NN intervals [SDNN] ms, p = .006). Parasympathetic modulation assessed by time-domain analysis was lower during SWS in PWS compared to both OB and LG (square root of the mean of the sum of the squares of differences between adjacent NN intervals [RMSSD] ms, p = .004; SDSD, standard deviation of differences between adjacent NN intervals [SDSD] ms, p = .02; number of adjacent NN intervals differing by >50 ms [NN50] ms, p = .03; proportion of adjacent NN intervals differing by >50 ms [pNN50] ms, p = .01). Sympathovagal balance assessed by frequency-domain analysis was lower during both N2 and SWS than during the rapid eye movement (REM) sleep stage, but not different among groups. In conclusion, this group of paediatric patients with PWS had impaired cardiac autonomic balance due to reduced parasympathetic modulation during SWS. This result could imply an underlying increased cardiovascular risk in PWS even during early age and independent of obesity.
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Affiliation(s)
- Leandro C Brito
- Exercise Hemodynamic Laboratory, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.,School of Arts, Science and Humanities, University of São Paulo, São Paulo, Brazil
| | - Thereza Queiroga
- Polisomnography Unit, Medical School, Children's Institute, University of São Paulo, São Paulo, Brazil
| | - Ruth R Franco
- Pediatric Endocrinology Unit, Medical School, Children's Institute, University of São Paulo, São Paulo, Brazil
| | - Caroline G B Passone
- Pediatric Endocrinology Unit, Medical School, Children's Institute, University of São Paulo, São Paulo, Brazil
| | - Maria-Cecilia Lopes
- Polisomnography Unit, Medical School, Children's Institute, University of São Paulo, São Paulo, Brazil.,Childhood and Adolescence Affetive Disorders Program (PRATA), Department and Institute of Psychiatry, Medical School, University of São Paulo, São Paulo, Brazil
| | - Steven A Shea
- Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, Portland, OR, USA
| | - Clarissa Bueno
- Polisomnography Unit, Medical School, Children's Institute, University of São Paulo, São Paulo, Brazil.,Department of Neurology, Clinical Hospital HCFMUSP, Medical School, University of São Paulo, São Paulo, Brazil
| | - Leticia M S F A Soster
- Polisomnography Unit, Medical School, Children's Institute, University of São Paulo, São Paulo, Brazil
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Ge MM, Gao YY, Wu BB, Yan K, Qin Q, Wang H, Zhou W, Yang L. Relationship between phenotype and genotype of 102 Chinese newborns with Prader-Willi syndrome. Mol Biol Rep 2019; 46:4717-4724. [PMID: 31270759 DOI: 10.1007/s11033-019-04916-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 06/13/2019] [Indexed: 12/14/2022]
Abstract
High rates of misdiagnosis and delayed intervention in neonatal PWS are leading to poor prognoses. To determine the clinical and image characteristics of newborns with Prader-Willi syndrome (PWS). A total of 102 cases of newborns definitively diagnosed with PWS at the Children's Hospital of Fudan University from 02/2014 to 12/2017 were retrospectively analyzed. We analyzed the modulated voxel-based morphology (VBM) of gray matter in PWS by T2 weighted imaging. Of 102 cases, 75 (73.5%) have paternal deletion of 15q11.2-q13, whereas 27 (26.5%) have maternal uniparental disomy (UPD). Of the 75 deletion cases, 75 (100%) week crying, 71 (94.7%) hypotonia, 70 (93.3%) poor feeding, 46 (61.3%) hypopigmentation, 43 (57.3%) male cryptorchidism, 10 (13.3%) female labia minora, 48 (64%) characteristic facial features. Of 27 UPD cases, 27 (100%) week crying and hypotonia, 25 (92.6%) hypophagia, 20 (74.1%) male cryptorchidism, 1 (3.7%) female labia minora, 19 (70.4%) characteristic facial features, 12 (44.4%) hypopigmentation. The modulated VBM analysis shows that the middle frontal gyrus, orbitofrontal cortex (middle), and inferior frontal gyrus are the most variable brain regions that determine the endo-phenotype difference between the two genotypes. Hypotonia, hypophagia, and maldevelopment of sexual organs are general characteristics of newborns with PWS in Chinese population. In UPD cases, the proportions of premature newborns, elderly parturient women and congenital malformations were higher than for paternal deletion cases. The differences in the gray matter volume of these three regions between the two genotypes may explain the differences in maladaptive behaviors and emotions.
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Affiliation(s)
- Meng-Meng Ge
- Department of Neonates, Children's Hospital, Fudan University, 399 Wan Yuan Road, Shanghai, 201102, China
| | - Yan-Yan Gao
- Department of B Ultrasonography, Children's Hospital, Fudan University, Shanghai, China
| | - Bing-Bing Wu
- Clinical Genetic Center, Children's Hospital of Fudan University, 399 Wan Yuan Road, Shanghai, 201102, China
| | - Kai Yan
- Department of Neonates, Children's Hospital, Fudan University, 399 Wan Yuan Road, Shanghai, 201102, China
| | - Qian Qin
- Clinical Genetic Center, Children's Hospital of Fudan University, 399 Wan Yuan Road, Shanghai, 201102, China
| | - HuiJun Wang
- Birth Defect Laboratory, Children's Hospital of Fudan University, Shanghai, China
| | - WenHao Zhou
- Department of Neonates, Children's Hospital, Fudan University, 399 Wan Yuan Road, Shanghai, 201102, China.
- Birth Defect Laboratory, Children's Hospital of Fudan University, Shanghai, China.
| | - Lin Yang
- Clinical Genetic Center, Children's Hospital of Fudan University, 399 Wan Yuan Road, Shanghai, 201102, China.
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Abstract
Prader-Willi syndrome (PWS) results from under-expression of the paternally-derived chromosomal region 15q11-13. Growth failure is a recognized feature of PWS, and both quantitative and qualitative defects of the GH/IGF-I axis revealing GH deficiency (GHD) have been demonstrated in most children with PWS. In PWS adults, criteria for GHD are biochemically fulfilled in 8-38% of the studied cohorts. Published data support benefits of early institution of GH therapy (GHT) in PWS children, with positive effects on statural growth, body composition, metabolic homeostasis, and neurocognitive function. Like in pediatric PWS, GHT also yields beneficial effects on lean and body fat, exercise capacity, and quality of life of PWS adults. Although GHT has been generally administered safely in PWS children and adults, careful surveillance of risks is mandatory during prolonged GH replacement for all PWS individuals.
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Affiliation(s)
- Graziano Grugni
- Division of Auxology, I.R.C.C.S. Istituto Auxologico Italiano, Ospedale S. Giuseppe, Verbania, 28921, Italy.
| | - Paolo Marzullo
- Division of General Medicine, I.R.C.C.S. Istituto Auxologico Italiano, Ospedale S. Giuseppe, Verbania, 28921, Italy; Department of Translational Medicine, Università del Piemonte Orientale, Novara, 28100, Italy
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Wang P, Zhou W, Yuan W, Huang L, Zhao N, Chen X. Prader-Willi syndrome in neonates: twenty cases and review of the literature in Southern China. BMC Pediatr 2016; 16:124. [PMID: 27506196 PMCID: PMC4977863 DOI: 10.1186/s12887-016-0662-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Accepted: 08/02/2016] [Indexed: 12/23/2022] Open
Abstract
Background Prader-Willi syndrome is a rare genetic abnormality that can be challenging to diagnose early, but for which early interventions improve prognosis. Methods To improve understanding of Prader–Willi syndrome in neonates in Asia, we retrospectively analyzed the clinical records of 20 affected newborns diagnosed in the Department of Neonatology, Guangzhou Women and Children’s Medical Center, Guangzhou, China from January 2007 to December 2014 and performed a review of the relevant literature. Results Fourteen boys and six girls presented with hypotonia, poor responsiveness, feeding difficulty, and infrequent, weak crying. Different from western patients, the 20 Asian patients exhibited at least five of the following typical features: prominent forehead, narrow face, almond-shaped eyes, small mouth, downturned mouth, thin upper lip, and micromandible. All 14 boys had a small scrotum, including nine with cryptorchidism. Diagnoses were made with microarray comparative genomic hybridization. All 20 infants required feeding tubes. Fifteen received swallowing training immediately after admission; the period of continuous tube feeding for these patients ranged from 8 to 22 days (mean, 14 ± 5.3 days). For the five patients who did not receive swallowing training, the period of continuous tube feeding ranged from 15 to 35 days (mean, 18 ± 4.3 days). Comprehensive care measures included: giving parents detailed health education and basic information about this disease, teaching skills to promote feeding and prevent suffocation, increasing children’s passive activity, providing nutrition management for normal development, and preventing excessive or inadequate nutrient intake. Conclusions Neonates with Prader–Willi syndrome in Asia have hypotonia, poor responsiveness, feeding difficulty, infrequent and weak crying, genital hypoplasia, and characteristic facial features. Recognition of the syndrome in neonates with confirmation by genetic testing is essential, because early diagnosis allows early intervention. Treatment measures including swallowing training can improve prognosis, prevent growth retardation and obesity, and elevate quality of life in individuals with Prader–Willi syndrome.
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Affiliation(s)
- Ping Wang
- The First Affiliated Hospital of Jinan University, No 613, Huangpuda Road, Guangzhou, Guangdong, 510623, China.,Department of Neonatology, Guangzhou Women and Children's Medical Center, No 9, Jinsui Road, Guangzhou, Guangdong, 510623, China
| | - Wei Zhou
- Department of Neonatology, Guangzhou Women and Children's Medical Center, No 9, Jinsui Road, Guangzhou, Guangdong, 510623, China.
| | - Weiming Yuan
- Department of Neonatology, Guangzhou Women and Children's Medical Center, No 9, Jinsui Road, Guangzhou, Guangdong, 510623, China
| | - Longguang Huang
- Department of Neonatology, Guangzhou Women and Children's Medical Center, No 9, Jinsui Road, Guangzhou, Guangdong, 510623, China
| | - Ning Zhao
- Department of Neonatology, Guangzhou Women and Children's Medical Center, No 9, Jinsui Road, Guangzhou, Guangdong, 510623, China
| | - Xiaowen Chen
- Department of Neonatology, Guangzhou Women and Children's Medical Center, No 9, Jinsui Road, Guangzhou, Guangdong, 510623, China
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10
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Hurren BJ, Flack NAMS. Prader-Willi Syndrome: A spectrum of anatomical and clinical features. Clin Anat 2016; 29:590-605. [PMID: 26749552 DOI: 10.1002/ca.22686] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 01/04/2016] [Indexed: 12/26/2022]
Abstract
Prader-Willi Syndrome (PWS) is estimated to affect 400,000 people worldwide. First described clinically in 1956, PWS is now known to be a result of a genetic mutation, involving Chromosome 15. The phenotypical appearance of individuals with the syndrome follows a similar developmental course. During infancy, universal hypotonia accompanied by feeding problems, hypogonadism, and dolichocephaly are evident. Characteristic facial features such as narrow bifrontal diameter, almond-shaped eyes, and small mouth (with downturned corners and thin upper lip) may also be evident at this stage. In early childhood, the craniofacial features become more obvious and a global developmental delay is observed. Simultaneously, individuals develop hyperphagia that leads to excessive or rapid weight gain, which, if untreated, exists throughout their lifespan and may predispose them to numerous, serious health issues. The standard tool for differential diagnosis of PWS is genetic screening; however, clinicians also need to be aware of the characteristic features of this disorder, including differences between the genetic subtypes. As the clinical manifestations of the syndrome vary between individuals and become evident at different developmental time points, early assessment is hindered. This article focuses on the clinical and anatomical manifestations of the syndrome and highlights the areas of discrepancy and limitations within the existing literature. Clin. Anat. 29:590-605, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Bradley J Hurren
- Department of Anatomy, University of Otago, Dunedin, 9016, New Zealand
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11
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Marzullo P, Marcassa C, Minocci A, Campini R, Eleuteri E, Gondoni LA, Aimaretti G, Sartorio A, Scacchi M, Grugni G. Long-term echocardiographic and cardioscintigraphic effects of growth hormone treatment in adults with Prader-Willi syndrome. J Clin Endocrinol Metab 2015; 100:2106-14. [PMID: 25710568 DOI: 10.1210/jc.2015-1063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
CONTEXT In Prader-Willi syndrome (PWS), an altered GH secretion has been related to reduced cardiac mass and systolic function compared to controls. OBJECTIVE The objective was to evaluate the cardiovascular response to a 4-year GH therapy in adult PWS patients. STUDY PARTICIPANTS Study participants were nine severely obese PWS adults (three females, six males) and 13 age-, gender-, and body mass index-matched obese controls. METHODS In an open-label prospective study, assessment of endocrine parameters and metabolic outcome, whole-body and abdominal fat scans, echocardiography, and radionuclide angiography in unstimulated and dobutamine-stimulated conditions were conducted at baseline and after 1 and 4 years of GH treatment. RESULTS GH treatment increased IGF-1 (P < .0001), decreased C-reactive protein levels (P < .05), improved visceral fat mass (P < .05), and achieved near-significant changes of fat and fat-free body mass in PWS patients. Left ventricle mass indexed by fat mass increased significantly after 1 and 4 years of GH therapy (P < .05) without evident abnormalities of diastolic function, while a trend toward a reduction of the ejection fraction was documented by echocardiography (P = .054). Radionuclide angiography revealed stable values throughout the study of both the left and right ventricle ejection fractions, although this was accompanied by a statistically nonsignificant reduction of the left ventricle filling rate. A positive association between lean body mass and left ventricle ejection fraction was evident during the study (P < .05). CONCLUSIONS GH therapy increased the cardiac mass of PWS adults without causing overt abnormalities of systolic and diastolic function. Although the association between lean mass and left ventricle ejection fraction during GH therapy corroborates a favorable systemic outcome of long-term GH treatment in adults with PWS, subtle longitudinal modifications of functional parameters advocate appropriate cardiac monitoring in the long-term therapeutic strategy for PWS.
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Affiliation(s)
- Paolo Marzullo
- Departments of General Medicine (P.M., M.S.), Metabolic Rehabilitation (A.M., A.S.), Cardiac Rehabilitation (L.A.G.), and Auxology (A.S., G.G.), Ospedale San Giuseppe, Instituto di Ricovero e Cura a Carattere Scientifico Istituto Auxologico Italiano, I-28921 Verbania, Italy; Departments of Cardiology (C.M., E.E.) and Nuclear Medicine (R.C.), Fondazione Salvatore Maugeri, I-27100 Veruno, Italy; and Department of Translational Medicine (P.M., G.A.), Università del Piemonte Orientale, I-28100 Novara, Italy
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Kapusta L, Mainzer G, Weiner Z, Deutsch L, Khoury A, Haddad S, Lorber A. Second trimester ultrasound: reference values for two-dimensional speckle tracking-derived longitudinal strain, strain rate and time to peak deformation of the fetal heart. J Am Soc Echocardiogr 2013. [PMID: 23200418 DOI: 10.1016/j.echo.2012.09.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Data on myocardial deformation during the internationally widely used second-trimester screening are scarce and confusing. Reference values of time to peak strain are missing. The aims of this study were to assess reference values derived from two-dimensional speckle-tracking echocardiography for global and regional longitudinal right ventricular (RV) and left ventricular (LV) strain, strain rate, and time to peak global strain and to determine the influence of heart rate and gender on these strain parameters. METHODS Seventy-five healthy fetuses were enrolled during second-trimester ultrasound (20-24 weeks). Clips with high frame rates (mean, 132 frames/sec) and two-dimensional (B-mode) grayscale images of apical or basal four-chamber views of both ventricles were used for offline analyses. RESULTS There were no statistically significant differences in global strain and strain rate between both ventricles (P = .679 and P = .734, respectively) or among the RV, septal, and LV free walls. Regional measurements, modeled also as an interaction of wall and segment (basal mid and apical), showed only a small, statistically significant difference between the basal RV and LV free walls. Strain and strain rate values were independent of heart rate. The mean time to peak LV global strain adjusted for heart rate was statistically significantly shorter than the RV value (P < .0001]). Strain, strain rate, and time to peak global strain were not found to be associated with gender. CONCLUSIONS The establishment of second-trimester two-dimensional speckle-tracking echocardiographic reference values for global and regional strain, strain rate, and time to peak global strain in a healthy fetal cohort is a mandatory prerequisite for its use in evaluating (pathologic) changes in both ventricular functions during pregnancy.
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Affiliation(s)
- Livia Kapusta
- Children's Heart Centre, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
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Forsey J, Friedberg MK, Mertens L. Speckle Tracking Echocardiography in Pediatric and Congenital Heart Disease. Echocardiography 2013; 30:447-59. [DOI: 10.1111/echo.12131] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Jonathan Forsey
- The Labatt Family Heart Center; The Hospital for Sick Children; The University of Toronto; Toronto; Ontario; Canada
| | - Mark K Friedberg
- The Labatt Family Heart Center; The Hospital for Sick Children; The University of Toronto; Toronto; Ontario; Canada
| | - Luc Mertens
- The Labatt Family Heart Center; The Hospital for Sick Children; The University of Toronto; Toronto; Ontario; Canada
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