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proteus syndrome

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https://www.readbyqxmd.com/read/28661492/quantifying-survival-in-patients-with-proteus-syndrome
#1
Julie C Sapp, Lian Hu, Jean Zhao, Ashlyn Gruber, Brian Schwartz, Dora Ferrari, Leslie G Biesecker Md
PurposeProteus syndrome is a rare mosaic overgrowth disorder that is associated with severe complications. While anecdotal data have suggested that the life span of affected patients is reduced, this has not been measured. Mortality data on rare diseases is critical for assessing treatments and other interventions.MethodsTo address this we used the clinical research records of 64 patients in a longitudinal natural history cohort at the National Institutes of Health to ascertain the data in an organized manner and estimate survival using a Kaplan-Meier approach...
June 29, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28627093/characterization-of-thrombosis-in-patients-with-proteus-syndrome
#2
Kim M Keppler-Noreuil, Jay N Lozier, Julie C Sapp, Leslie G Biesecker
Patients with overgrowth and complex vascular malformation syndromes, including Proteus syndrome have an increased risk of thromboembolism. Proteus syndrome is a mosaic, progressive overgrowth disorder involving vasculature, skin, and skeleton, and caused by a somatic activating mutation in AKT1. We conducted a comprehensive review of the medical histories and hematologic evaluations of 57 patients with Proteus syndrome to identify potential risk factors for thrombosis. We found that six of ten patients, who were deceased, died secondary to deep venous thrombosis and/or pulmonary embolism...
June 19, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28582432/in-vivo-efficacy-of-the-akt-inhibitor-arq-092-in-noonan-syndrome-with-multiple-lentigines-associated-hypertrophic-cardiomyopathy
#3
Jianxun Wang, Vasanth Chandrasekhar, Giovanni Abbadessa, Yi Yu, Brian Schwartz, Maria I Kontaridis
Noonan Syndrome with Multiple Lentigines (NSML, formerly LEOPARD syndrome) is an autosomal dominant "RASopathy" disorder manifesting in congenital heart disease. Most cases of NSML are caused by catalytically inactivating mutations in the protein tyrosine phosphatase (PTP), non-receptor type 11 (PTPN11), encoding the SH2 domain-containing PTP-2 (SHP2) protein. We previously generated knock-in mice harboring the PTPN11 mutation Y279C, one of the most common NSML alleles; these now-termed SHP2Y279C/+ mice recapitulate the human disorder and develop hypertrophic cardiomyopathy (HCM) by 12 weeks of age...
2017: PloS One
https://www.readbyqxmd.com/read/28576518/refractory-sleep-disordered-breathing-due-to-unilateral-lingual-tonsillar-hypertrophy-in-a-child-with-proteus-syndrome
#4
Courtni R Salinas, Brian A Nuyen, Aria Jafari, Javan Nation
Proteus Syndrome (PS) is a rare congenital overgrowth disease affecting bones, skin, adipose and the central nervous system. The result is asymmetric, disfiguring hypertrophy which can manifest as craniofacial dysmorphia and aerodigestive tract abnormalities. We report the case of obstructive lingual tonsillar hypertrophy resulting in residual sleep disordered breathing after adenotonsillectomy in a child with PS, a previously unrecognized manifestation of the disease. Endoscopic treatment with coblation effectively and safely treated the obstructive symptoms...
April 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28553400/proteus-syndrome-with-neurological-manifestations-a-rare-presentation
#5
Pallavi Sachdeva, Priyanka Minocha, Rohit Jain, Sadasivan Sitaraman, Manisha Goyal
Proteus syndrome (PS) is an extremely rare and complex disorder. Approximately 200 cases have been reported, and it seems to affect people of all ethnic and racial groups. PS is characterized by segmental overgrowth of multiple tissues and organs including vascular malformations, lipomatous overgrowth, hyperpigmentation, and various types of nevi. We hereby present a 7-year-old boy who presented with seizures and overgrowth of one-half of the body. Although classical physical features have been described, epilepsy and other neurological manifestations are rarely reported features of PS...
January 2017: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28523199/de-novo-pten-mutation-in-a-young-boy-with-cutaneous-vasculitis
#6
Angela Mauro, Ebun Omoyinmi, Neil James Sebire, Angela Barnicoat, Paul Brogan
Phosphatase and tensin homolog (PTEN) is the protein encoded by the PTEN gene (10q23.3). PTEN mutations are related to a variety of rare diseases referred to collectively as PTEN hamartoma tumor syndromes (PHTS), which include Cowden Syndrome, Bannayan-Riley-Ruvalcaba syndrome, Proteus Syndrome, and Proteus-like syndrome. These diseases are associated with an increased risk of malignancy and for this reason an accurate and early diagnosis is essential in order to institute cancer surveillance. PTEN is a regulator of growth and homeostasis in immune system cells, although there are limited data describing immune dysregulation caused by PTEN mutations...
2017: Case Reports in Pediatrics
https://www.readbyqxmd.com/read/28502730/overgrowth-syndromes-caused-by-somatic-variants-in-the-phosphatidylinositol-3-kinase-akt-mammalian-target-of-rapamycin-pathway
#7
REVIEW
Gozde Akgumus, Fengqi Chang, Marilyn M Li
Somatic variants have been well described in tumorigenesis; however, they are only recently appreciated in other human disorders, such as mosaic overgrowth syndromes. Although overgrowth is a manifestation in many genetic syndromes, not all overgrowth syndromes are inherited. Mosaic somatic variants have been lately described in several overgrowth disorders, such as Proteus syndrome, CLOVES (congenital, lipomatous, overgrowth, vascular malformations, epidermal nevi, and spinal/skeletal anomalies and/or scoliosis) syndrome, megalencephaly-polymicrogyria-polydactyly-hydrocephalus syndrome, and megalencephaly-capillary malformation-polymicrogyria syndrome...
May 11, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28502725/molecular-diagnosis-of-mosaic-overgrowth-syndromes-using-a-custom-designed-next-generation-sequencing-panel
#8
Fengqi Chang, Liu Liu, Erica Fang, Guangcheng Zhang, Tiansheng Chen, Kajia Cao, Yanchun Li, Marilyn M Li
Recent studies have discovered a group of overgrowth syndromes, such as congenital lipomatous overgrowth with vascular, epidermal, and skeletal anomalies (CLOVES) syndrome, Proteus syndrome, and megalencephaly-capillary malformation-polymicrogyria (MCAP) syndrome, are caused by somatic activating variants in the genes involved in the phosphatidylinositol 3-kinase/AKT/mechanistic target of rapamycin pathway. Because of the low-abundance nature of these pathogenic variants, Sanger sequencing often yields negative results...
May 11, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28463826/a-case-controlled-study-examining-the-bladder-microbiome-in-women-with-overactive-bladder-oab-and-healthy-controls
#9
Natasha Curtiss, Aswini Balachandran, Louise Krska, Claire Peppiatt-Wildman, Scott Wildman, Jonathan Duckett
OBJECTIVE: To characterise the microbiome in healthy women with no bladder symptoms and to compare this to the bladder microbiome in patients with overactive bladder syndrome (OAB). STUDY DESIGN: MSU specimens from 63 women with OAB were compared to urine from 35 controls. Urine was centrifuged and the resulting sediment pellet was re-suspended in supernatant and plated under aerobic conditions for 48h and anaerobic conditions for 7days. Each morphologically distinct colony was purity plated...
July 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28451417/proteus-syndrome-a-case-report-and-review-of-the-literature
#10
Minglin Ou, Zhaojun Sun, Peng Zhu, Guoping Sun, Yong Dai
Proteus syndrome is a rare complex syndrome involving clinical presentation with atypical skeletal growth. Only a limited number of cases with this syndrome have been reported in the literature to date. We herein report the case of a Chinese male patient with Proteus syndrome and review the clinical and molecular characteristics of this disease. The patient was a 34-year-old man with clinical manifestations suggestive of the Proteus syndrome, including mosaic distribution of the lesions, sporadic occurrence, progressive course, disproportionate overgrowth of the legs, epidermal nevi, lipomas, venous malformations and characteristic facial phenotype...
March 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28401074/proteus-syndrome-with-arteriovenous-malformation
#11
Ali Asilian, Atefeh Sadat Kamali, Nabet Tajmir Riahi, Neda Adibi, Fatemeh Mokhtari
Proteus syndrome is a rare sporadic disorder that appears with localized macrosomia, congenital lipomatosis, and slow flow vascular malformations, connective tissue nevus, and epidermal nevus. There are usually some manifestations at birth. The vascular abnormalities that have been reported in Proteus syndrome are capillary and slow flow venous malformation. We report a case of a 10-year-old boy with confirmed Proteus syndrome characterized by high flow vascular malformation (arteriovenous [AV] malformation) unlike the usual vascular malformations seen in this syndrome...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28168078/a-rare-case-of-diffuse-hemangiomatosis-of-the-spleen-with-splenic-rupture-following-aortic-valve-replacement
#12
F Capilli, M Weinbeck, M Czerny, M Siepe, T Krauss
In this paper we present a rare case of splenic rupture that occurred after an open aortic valve replacement in a male patient with hemangiomatosis of the spleen and the liver. The patient was treated with an emergency splenectomy. He showed no other sings of associated systemic disorder, such as Klippel-trénaunay syndrome or Proteus syndrome.
2017: Case Reports in Radiology
https://www.readbyqxmd.com/read/28002528/redundant-plantar-skin-folds
#13
Laura Otilia Damian, Siao Pin Simon, Ioana Felea, Carolina Botar-Jid, Bogdan Stancu, Liliana Rogojan, Cristina Ana Maria Pamfil, Adriana Albu, Simona Rednic
A 46-year-old female patient presented with photosensitivity, symmetric arthritis, episodic plantar pain and strikingly redundant plantar skin folds, likely due to lipoatrophy after recurrent episodes of plantar panniculitis. In this context, leukopenia with lymphopenia, thrombocytopenia and positive antinuclear antibodies were revelatory for systemic lupus erythematosus. However, a small cerebriform plantar collagenoma, along with discrete dysmorphic features with downslanting palpebral fissures and mild right ptosis, second and third syndactyly and a larger first right toe since childhood, and early-onset bilateral ovarian cystadenoma, suggested a minimal Proteus syndrome...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/27890237/mosaic-disorders-of-the-pi3k-pten-akt-tsc-mtorc1-signaling-pathway
#14
REVIEW
Neera Nathan, Kim M Keppler-Noreuil, Leslie G Biesecker, Joel Moss, Thomas N Darling
Somatic mutations in genes of the PI3K/PTEN/AKT/TSC/mTORC1 signaling pathway cause segmental overgrowth, hamartomas, and malignant tumors. Mosaicism for activating mutations in AKT1 or PIK3CA cause Proteus syndrome and PIK3CA-Related Overgrowth Spectrum, respectively. Postzygotic mutations in PTEN or TSC1/TSC2 cause mosaic forms of PTEN hamartoma tumor syndrome or tuberous sclerosis complex, respectively. Distinct features observed in these mosaic conditions in part reflect differences in embryological timing or tissue type harboring the mutant cells...
January 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/27874891/recurrent-cerebriform-connective-tissue-nevus-on-the-foot-of-a-patient-with-proteus-syndrome
#15
LETTER
Jianbing Wu, Qiang Wang, Pangen Cui, Xinfeng Wu, Zhenzhen Yan
No abstract text is available yet for this article.
October 2016: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/27860216/somatic-overgrowth-disorders-of-the-pi3k-akt-mtor-pathway-therapeutic-strategies
#16
REVIEW
Kim M Keppler-Noreuil, Victoria E R Parker, Thomas N Darling, Julian A Martinez-Agosto
The phosphatidylinositol-3-kinase (PI3K)/AKT/mTOR signaling pathway plays an essential role in regulation of normal cell growth, metabolism, and survival. Somatic activating mutations in the PI3K/AKT/mTOR pathway are among the most common mutations identified in cancer, and have been shown to cause a spectrum of overgrowth syndromes including PIK3CA-Related Overgrowth Spectrum, Proteus syndrome, and brain overgrowth conditions. Clinical findings in these disorders may be isolated or multiple, including sporadic or mosaic overgrowth (adipose, skeletal, muscle, brain, vascular, or lymphatic), and skin abnormalities (including epidermal nevi, hyper-, and hypopigmented lesions), and have the potential risk of tumorigenesis...
December 2016: American Journal of Medical Genetics. Part C, Seminars in Medical Genetics
https://www.readbyqxmd.com/read/27836382/propensity-score-matched-analysis-comparing-the-therapeutic-efficacies-of-cefazolin-and-extended-spectrum-cephalosporins-as-appropriate-empirical-therapy-in-adults-with-community-onset-escherichia-coli-klebsiella-spp-and-proteus-mirabilis-bacteraemia
#17
COMPARATIVE STUDY
Chih-Chia Hsieh, Chung-Hsun Lee, Ming-Yuan Hong, Yuan-Pin Hung, Nan-Yao Lee, Wen-Chien Ko, Ching-Chi Lee
In this study, the therapeutic efficacy of cefazolin was compared with that of extended-spectrum cephalosporins (ESCs) (cefotaxime, ceftriaxone and ceftazidime) as appropriate empirical therapy in adults with community-onset monomicrobial bacteraemia caused by Escherichia coli, Klebsiella spp. or Proteus mirabilis (EKP). Compared with cefazolin-treated patients (n = 135), significantly higher proportions of patients in the ESC treatment group (n = 456) had critical illness at bacteraemia onset (Pitt bacteraemia score ≥4) and fatal co-morbidities (McCabe classification)...
December 2016: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/27735155/proteus-syndrome
#18
Shailender Rawal, Bhuwan Sharma, Surekha Dabla, Jasminder Singh, Shivraj Goyal
Proteus syndrome is an extremely rare disorder with a documentation of only 100 cases world over till date. This sporadic disorder involves the skeletal system, central nervous system, eyes, skin, soft tissues and vascular system. We report a case of Proteus syndrome in a 22 year male presenting with abnormally enlarged and hypertrophied feet resulting in marked physical constraints.
May 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27728734/a-rare-case-report-of-proteus-syndrome
#19
Vaishak Muralidharan, U M Vaishak, M Anjali, A Jayaprakash
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27703636/bronchoscopic-concerns-in-proteus-syndrome-a-case-report
#20
Jung-Min Hong, Hyeon Jeong Lee, Eun Soo Kim, Hae-Kyu Kim, Soeun Jeon, Hyae-Jin Kim
Proteus syndrome (PS) is a rare congenital hamartomatous disorder with multisystem involvement. PS shows highly clinical variability due to overgrowth of the affected areas, and several features can make anesthetic management challenging. Little is known about the airway problem associated with anesthesia in PS patients. An 11-year-old girl with PS was scheduled for ear surgery under general anesthesia. She had features complicating intubation including facial asymmetry and disproportion, abnormal teeth, limitation of neck movement due to torticollis, and thoracolumbar scoliosis...
October 2016: Korean Journal of Anesthesiology
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