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Kantaputra P, Panichkul W, Sillapasorn P, Adisornkanj P, Kitsadayurach P, Kaewgaya M, Intachai W, Olsen B, Ngamphiw C, Leethanakul C, Jatooratthawichot P, Ketudat Cairns JR, Tongsima S. LRP4 mutations, dental anomalies, and oral exostoses. Int J Paediatr Dent 2023. [PMID: 38013205 DOI: 10.1111/ipd.13141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 12/22/2022] [Accepted: 11/07/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND In order to generate a normal set of teeth, fine-tuning of Wnt/β-catenin signaling is required, in which WNT ligands bind to their inhibitors or WNT inhibitors bind to their co-receptors. Lrp4 regulates the number of teeth and their morphology by modulating Wnt/β-catenin signaling as a Wnt/β-catenin activator or inhibitor, depending on its interactions with the partner proteins, such as Sostdc1 and Dkk1. AIM To investigate genetic etiologies of dental anomalies involving LRP4 in a Thai cohort of 250 children and adults with dental anomalies. DESIGN Oral and radiographic examinations and whole exome sequencing were performed for every patient. RESULTS Two novel (p.Leu1356Arg and p.Ala1702Gly) and three recurrent (p.Arg263His, p.Gly1314Ser, and p.Asn1385Ser) rare variants in low-density lipoprotein receptor-related protein 4 (LRP4: MIM 604270) were identified in 11 patients. Oral exostoses were observed in five patients. CONCLUSION Antagonism of Bmp signaling by Sostdc1 requires the presence of Lrp4. Mice lacking Lrp4 have been demonstrated to have alteration of Wnt-Bmp-Shh signaling and an abnormal number of incisors. Therefore, the LRP4 mutations found in our patients may disrupt Wnt-Bmp-Shh signaling, thereby resulting in dental anomalies and oral exostoses. Root maldevelopment in the patients suggests an important role of LRP4 in root morphogenesis.
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Affiliation(s)
- Piranit Kantaputra
- Center of Excellence in Medical Genetics Research, Chiang Mai University, Chiang Mai, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | | | | | - Ploy Adisornkanj
- Center of Excellence in Medical Genetics Research, Chiang Mai University, Chiang Mai, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
- Dental Department, Sawang Daen Din Crown Prince Hospital, Sakon Nakhon, Thailand
| | | | - Massupa Kaewgaya
- Center of Excellence in Medical Genetics Research, Chiang Mai University, Chiang Mai, Thailand
| | - Worrachet Intachai
- Center of Excellence in Medical Genetics Research, Chiang Mai University, Chiang Mai, Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, Massachusetts, USA
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Center for Genetic Engineering and Biotechnology (BIOTEC), Pathum Thani, Thailand
| | - Chidchanok Leethanakul
- Orthodontic Section, Department of Preventive Dentistry, Faculty of Dentistry, Prince of Songkla University, Songkhla, Thailand
| | - Peeranat Jatooratthawichot
- School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - James R Ketudat Cairns
- School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Sissades Tongsima
- National Biobank of Thailand, National Center for Genetic Engineering and Biotechnology (BIOTEC), Pathum Thani, Thailand
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2
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Kantaputra PN, Tripuwabhrut K, Anthonappa RP, Chintakanon K, Ngamphiw C, Adisornkanj P, Porntrakulseree N, Olsen B, Intachai W, Hennekam RC, Vieira AR, Tongsima S. Heterozygous Variants in FREM2 Are Associated with Mesiodens, Supernumerary Teeth, Oral Exostoses, and Odontomas. Diagnostics (Basel) 2023; 13:diagnostics13071214. [PMID: 37046432 PMCID: PMC10093539 DOI: 10.3390/diagnostics13071214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/10/2023] [Accepted: 03/16/2023] [Indexed: 04/14/2023] Open
Abstract
BACKGROUND Supernumerary teeth refer to extra teeth that exceed the usual number of dentitions. A mesiodens is a particular form of supernumerary tooth, which is located in the premaxilla region. The objective of the study was to investigate the genetic etiology of extra tooth phenotypes, including mesiodens and isolated supernumerary teeth. METHODS Oral and radiographic examinations and whole-exome sequencing were performed on every patient in our cohort of 122 patients, including 27 patients with isolated supernumerary teeth and 94 patients with mesiodens. A patient who had multiple supernumerary teeth also had odontomas. RESULTS We identified a novel (c.8498A>G; p.Asn2833Ser) and six recurrent (c.1603C>T; p.Arg535Cys, c.5852G>A; p.Arg1951His, c.6949A>T; p.Thr2317Ser; c.1549G>A; p.Val517Met, c.1921A>G; p.Thr641Ala, and c.850G>C; p.Val284Leu) heterozygous missense variants in FREM2 in eight patients with extra tooth phenotypes. CONCLUSIONS Biallelic variants in FREM2 are implicated in autosomal recessive Fraser syndrome with or without dental anomalies. Here, we report for the first time that heterozygous carriers of FREM2 variants have phenotypes including oral exostoses, mesiodens, and isolated supernumerary teeth.
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Affiliation(s)
- Piranit Nik Kantaputra
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kanich Tripuwabhrut
- Division of Orthodontics, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Robert P Anthonappa
- Department of Pediatric Dentistry, University of Western Australia Dental School, Nedlands, WA 6009, Australia
| | - Kanoknart Chintakanon
- Division of Orthodontics, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency, Khlong Luang 12120, Thailand
| | - Ploy Adisornkanj
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Dental Department, Sawang Daen Din Crown Prince Hospital, Sakon Nakhon 47110, Thailand
| | | | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, MA 02115, USA
| | - Worrachet Intachai
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Raoul C Hennekam
- Department of Pediatrics, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Alexandre R Vieira
- Department of Oral and Craniofacial Sciences, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency, Khlong Luang 12120, Thailand
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3
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Adisornkanj P, Chanprasit R, Eliason S, Fons JM, Intachai W, Tongsima S, Olsen B, Arold ST, Ngamphiw C, Amendt BA, Tucker AS, Kantaputra P. Genetic Variants in Protein Tyrosine Phosphatase Non-Receptor Type 23 Are Responsible for Mesiodens Formation. Biology 2023; 12:biology12030393. [PMID: 36979085 PMCID: PMC10045488 DOI: 10.3390/biology12030393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/24/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023]
Abstract
A mesiodens is a supernumerary tooth located in the midline of the premaxilla. In order to investigate the genetic etiology of mesiodens, clinical and radiographic examination and whole exome sequencing (WES) were performed in 24 family members of a two-generation Hmong family and additionally in two unrelated Thai patients with mesiodens. WES in the Hmong family revealed a missense mutation (c.1807G>A;p.Glu603Lys) in PTPN23 in seven affected members and six unaffected members. The mode of inheritance was autosomal dominance with incomplete penetrance (53.84%). Two additional mutations in PTPN23, c.2248C>G;p.Pro750Ala and c.3298C>T;p.Arg1100Cys were identified in two unrelated patients with mesiodens. PTPN23 is a regulator of endosomal trafficking functioning to move activated membrane receptors, such as EGFR, from the endosomal sorting complex towards the ESCRT-III complex for multivesicular body biogenesis, lysosomal degradation, and subsequent downregulation of receptor signaling. Immunohistochemical study and RNAscope on developing mouse embryos showed broad expression of PTPN23 in oral tissues, while immunofluorescence showed that EGFR was specifically concentrated in the midline epithelium. Importantly, PTPN23 mutant protein was shown to have reduced phosphatase activity. In conclusion, mesiodens were associated with genetic variants in PTPN23, suggesting that mesiodens may form due to defects in endosomal trafficking, leading to disrupted midline signaling.
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Affiliation(s)
- Ploy Adisornkanj
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Rajit Chanprasit
- Dental Department, Wiang Kaen Hospital, Wiang Kaen, Chiang Rai 57310, Thailand
| | - Steven Eliason
- Department of Anatomy and Cell Biology and the Craniofacial Anomalies Research Center, The University of Iowa, Iowa City, IA 52242, USA
| | - Juan M. Fons
- Centre for Craniofacial and Regenerative Biology, King’s College London, Floor 27 Guy’ Hospital, London Bridge, London SE1 9RT, UK
| | - Worrachet Intachai
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani 12120, Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, MA 02115, USA
| | - Stefan T. Arold
- Computational Bioscience Research Center, Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
- Center for Structural Biology, National Institute of Health and Medical Research, National Centre for Scientific Research, University of Montpellier, 34090 Montpellier, France
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani 12120, Thailand
| | - Brad A. Amendt
- Department of Anatomy and Cell Biology and the Craniofacial Anomalies Research Center, The University of Iowa, Iowa City, IA 52242, USA
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, IA 52242, USA
| | - Abigail S. Tucker
- Centre for Craniofacial and Regenerative Biology, King’s College London, Floor 27 Guy’ Hospital, London Bridge, London SE1 9RT, UK
| | - Piranit Kantaputra
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Correspondence:
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4
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Kantaputra P, Butali A, Eliason S, Chalkley C, Nakornchai S, Bongkochwilawan C, Kawasaki K, Kumchiang A, Ngamphiw C, Tongsima S, Ketudat Cairns JR, Olsen B, Intachai W, Ohazama A, Tucker AS, Amendt BA. CACNA1S mutation-associated dental anomalies: A calcium channelopathy. Oral Dis 2023. [PMID: 36825457 DOI: 10.1111/odi.14551] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 02/11/2023] [Accepted: 02/22/2023] [Indexed: 02/25/2023]
Abstract
OBJECTIVES To identify the molecular etiology of distinct dental anomalies found in eight Thai patients and explore the mutational effects on cellular functions. MATERIALS AND METHODS Clinical and radiographic examinations were performed for eight patients. Whole exome sequencing, mutant protein modelling, qPCR, western blot analysis, scratch assays, immunofluorescence, confocal analysis, in situ hybridization, and scanning electron micrography of teeth were done. RESULTS All patients had molars with multiple supernumerary cusps, single-cusped premolars, and a reduction in root number. Mutation analysis highlighted a heterozygous c.865A>G; p.Ile289Val mutation in CACNA1S in the patients. CACNA1S is a component of the slowly inactivating L-type voltage-dependent calcium channel. Mutant protein modeling suggested that the mutation might allow leakage of Ca2+ or other cations, or a tightening, to restrict calcium flow. Immunohistochemistry analysis showed expression of Cacna1s in the developing murine tooth epithelium during stages of crown and root morphogenesis. In cell culture, the mutation resulted in abnormal cell migration of transfected CHO cells compared to wildtype CACNA1S, with changes to the cytoskeleton and markers of focal adhesion. CONCLUSIONS The malformations observed in our patients suggest a role for calcium signaling in organization of both cusps and roots, affecting cell dynamics within the dental epithelium.
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Affiliation(s)
- P Kantaputra
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.,Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - A Butali
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA.,Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, Iowa, USA
| | - S Eliason
- Department of Anatomy and Cell Biology, Craniofacial Anomalies Research Center, University of Iowa, Iowa City, Iowa, USA
| | - C Chalkley
- Department of Anatomy and Cell Biology, Craniofacial Anomalies Research Center, University of Iowa, Iowa City, Iowa, USA
| | - S Nakornchai
- Department of Pediatric Dentistry, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
| | - C Bongkochwilawan
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.,Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - K Kawasaki
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - A Kumchiang
- Na-Chauk Hospital, Na-Chauk, Maha Sarakham, Thailand
| | - C Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency (NSTDA), Thailand Science Park, Khlong Luang, Pathum Thani, Thailand
| | - S Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency (NSTDA), Thailand Science Park, Khlong Luang, Pathum Thani, Thailand
| | - J R Ketudat Cairns
- Center for Biomolecular Structure, Function and Application, School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand.,Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand
| | - B Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - W Intachai
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.,Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - A Ohazama
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - A S Tucker
- Centre for Craniofacial and Regenerative Biology, King's College London, London, UK
| | - B A Amendt
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA.,Department of Anatomy and Cell Biology, Craniofacial Anomalies Research Center, University of Iowa, Iowa City, Iowa, USA
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5
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Panyarat C, Nakornchai S, Chintakanon K, Leelaadisorn N, Intachai W, Olsen B, Tongsima S, Adisornkanj P, Ngamphiw C, Cox TC, Kantaputra P. Rare Genetic Variants in Human APC Are Implicated in Mesiodens and Isolated Supernumerary Teeth. Int J Mol Sci 2023; 24:ijms24054255. [PMID: 36901686 PMCID: PMC10002335 DOI: 10.3390/ijms24054255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/14/2023] [Accepted: 02/17/2023] [Indexed: 02/25/2023] Open
Abstract
The activation of Wnt/β-catenin signalling is a prerequisite for odontogenesis. APC, a member of the AXIN-CK1-GSK3β-APC β-catenin destruction complex, functions to modulate Wnt/β-catenin signalling to establish regular teeth number and positions. APC loss-of-function mutations are associated with the over-activation of WNT/β-catenin signalling and subsequent familial adenomatous polyposis (FAP; MIM 175100) with or without multiple supernumerary teeth. The ablation of Apc function in mice also results in the constitutive activation of β-catenin in embryonic mouse epithelium and causes supernumerary tooth formation. The objective of this study was to investigate if genetic variants in the APC gene were associated with supernumerary tooth phenotypes. We clinically, radiographically, and molecularly investigated 120 Thai patients with mesiodentes or isolated supernumerary teeth. Whole exome and Sanger sequencing identified three extremely rare heterozygous variants (c.3374T>C, p.Val1125Ala; c.6127A>G, p.Ile2043Val; and c.8383G>A, p.Ala2795Thr) in APC in four patients with mesiodentes or a supernumerary premolar. An additional patient with mesiodens was compound as heterozygous for two APC variants (c.2740T>G, p.Cys914Gly, and c.5722A>T, p.Asn1908Tyr). Rare variants in APC in our patients are likely to contribute to isolated supernumerary dental phenotypes including isolated mesiodens and an isolated supernumerary tooth.
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Affiliation(s)
- Chomchanok Panyarat
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Siriruk Nakornchai
- Department of Pediatric Dentistry, Faculty of Dentistry, Mahidol University, Bangkok 10400, Thailand
| | - Kanoknart Chintakanon
- Division of Orthodontics, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | | | - Worrachet Intachai
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency (NSTDA), Thailand Science Park, Pathum Thani 12120, Thailand
| | - Ploy Adisornkanj
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Dental Department, Sawang Daen Din Crown Prince Hospital, Sakon Nakhon 47110, Thailand
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency (NSTDA), Thailand Science Park, Pathum Thani 12120, Thailand
| | - Timothy C. Cox
- Departments of Oral & Craniofacial Sciences, School of Dentistry, and Pediatrics, School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Piranit Kantaputra
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Correspondence:
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Kantaputra PN, Angkurawaranon S, Intachai W, Ngamphiw C, Olsen B, Tongsima S, Cox TC, Ketudat Cairns JR. A Founder Intronic Variant in P3H1 Likely Results in Aberrant Splicing and Protein Truncation in Patients of Karen Descent with Osteogenesis Imperfecta Type VIII. Genes (Basel) 2023; 14:genes14020322. [PMID: 36833249 PMCID: PMC9956579 DOI: 10.3390/genes14020322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/19/2023] [Accepted: 01/22/2023] [Indexed: 01/28/2023] Open
Abstract
One of the most important steps in post-translational modifications of collagen type I chains is the hydroxylation of carbon-3 of proline residues by prolyl-3-hydroxylase-1 (P3H1). Genetic variants in P3H1 have been reported to cause autosomal recessive osteogenesis imperfecta (OI) type VIII. Clinical and radiographic examinations, whole-exome sequencing (WES), and bioinformatic analysis were performed in 11 Thai children of Karen descent affected by multiple bone fractures. Clinical and radiographic findings in these patients fit OI type VIII. Phenotypic variability is evident. WES identified an intronic homozygous variant (chr1:43212857A > G; NM_022356.4:c.2055 + 86A > G) in P3H1 in all patients, with parents in each patient being heterozygous for the variant. This variant is predicted to generate a new "CAG" splice acceptor sequence, resulting in the incorporation of an extra exon that leads to a frameshift in the final exon and subsequent non-functional P3H1 isoform a. Alternative splicing of P3H1 resulting in the absence of functional P3H1 caused OI type VIII in 11 Thai children of Karen descent. This variant appears to be specific to the Karen population. Our study emphasizes the significance of considering intronic variants.
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Affiliation(s)
- Piranit Nik Kantaputra
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Correspondence:
| | - Salita Angkurawaranon
- Division of Diagnostic Radiology, Department of Radiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Worrachet Intachai
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency, Khlong Luang, Pathum Thani 12120, Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency, Khlong Luang, Pathum Thani 12120, Thailand
| | - Timothy C. Cox
- Departments of Oral & Craniofacial Sciences, School of Dentistry, and Pediatrics, School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - James R. Ketudat Cairns
- Center for Biomolecular Structure, Function and Application and School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok 10210, Thailand
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7
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Kantaputra P, Daroontum T, Chuamanochan M, Chaowattanapanit S, Kiratikanon S, Choonhakarn C, Intachai W, Olsen B, Tongsima S, Ngamphiw C, Pontisso P, Cox TC, Ounjai P. SERPINB3, Adult-Onset Immunodeficiency, and Generalized Pustular Psoriasis. Genes (Basel) 2023; 14:genes14020266. [PMID: 36833193 PMCID: PMC9957076 DOI: 10.3390/genes14020266] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Generalized pustular psoriasis (GPP; MIM 614204) is a rare and severe pustular autoinflammatory skin disease in which acute generalized erythema and scaling develop with numerous sterile pustules. GPP shares skin manifestations, especially pustular skin reaction, with adult-onset immunodeficiency (AOID) with anti-interferon-γ autoantibodies, an autoimmune disease. METHODS Clinical examinations and whole-exome sequencing (WES) were performed on 32 patients with pustular psoriasis phenotypes and 21 patients with AOID with pustular skin reaction. Immunohistochemical and histopathological studies were performed. RESULTS WES identified three Thai patients presenting with similar pustular phenotypes-two with a diagnosis of AOID and the other with GPP. A heterozygous missense variant chr18:g.61325778C>A NM_006919.2: c.438G>T; NP_008850.1: p.Lys146Asn; rs193238900 in SERPINB3 was identified in two patients: one with GPP and the other with AOID. The other patient who had AOID carried a heterozygous missense variant chr18:g.61323147T>C NM_006919.2: c.917A>G; NP_008850.1: p.Asp306Gly in SERPINB3. Immunohistochemical studies showed overexpression of SERPINA1 and SERPINB3, a hallmark of psoriatic skin lesions. CONCLUSIONS Genetic variants in SERPINB3 are associated with GPP and AOID with pustular skin reaction. The skin of patients with GPP and AOID carrying SERPINB3 mutations showed overexpression of SERPINB3 and SERPINA1. Clinically and genetically, GPP and AOID appear to share pathogenetic mechanisms.
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Affiliation(s)
- Piranit Kantaputra
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Correspondence:
| | - Teerada Daroontum
- Department of Pathology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Mati Chuamanochan
- Division of Dermatology, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Suteeraporn Chaowattanapanit
- Division of Dermatology, Department of Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Salin Kiratikanon
- Division of Dermatology, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Charoen Choonhakarn
- Division of Dermatology, Department of Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Worrachet Intachai
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, MA 02115, USA
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency (NSTDA), Thailand Science Park, Pathum Thani 12120, Thailand
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency (NSTDA), Thailand Science Park, Pathum Thani 12120, Thailand
| | - Patrizia Pontisso
- Department of Medicine, University of Padua, 35128 Padua, Italy
- European Reference Network—ERN RARE-LIVER, 72076 Tübingen, Germany
| | - Timothy C. Cox
- Departments of Oral & Craniofacial Sciences, School of Dentistry, and Pediatrics, School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Puey Ounjai
- Center of Excellence on Environmental Health and Toxicology (EHT), Office of Higher Education Commission, Ministry of Education, Bangkok 10400, Thailand
- Department of Biology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
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8
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Wejaphikul K, Dejkhamron P, Khorana J, Watcharachan K, Intachai W, Olsen B, Tongsima S, Ketudat Cairns JR, Ngamphiw C, Kantaputra P. Subtotal Parathyroidectomy Successfully Controls Calcium Levels of Patients with Neonatal Severe Hyperparathyroidism Carrying a Novel CASR Mutation. Horm Res Paediatr 2023; 96:432-438. [PMID: 36626889 DOI: 10.1159/000528568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 11/28/2022] [Indexed: 01/11/2023] Open
Abstract
INTRODUCTION Inactivating mutations of the calcium-sensing receptor (CASR) gene result in neonatal severe hyperparathyroidism (NSHPT). Total parathyroidectomy is an effective way to control life-threatening hypercalcemia in NSHPT but leads to permanent hypoparathyroidism. An alternative surgical option is subtotal parathyroidectomy. However, few cases were reported in the literature. Here, we report two unrelated NSHPT patients, one with a novel homozygous mutation (c.1817T>C; p.Leu606Pro) in CASRand the other with heterozygous for the same mutation who also carried two rare intronic variants in CASR. The outcomes of subtotal parathyroidectomy in these patients are also described. CASE PRESENTATION Two infants presented with an alteration of consciousness, respiratory distress, and bradycardia. Severe hypercalcemia, hypophosphatemia, and markedly elevated parathyroid hormone levels were identified, suggesting NSHPT. Cinacalcet was unable to control calcium (Ca) levels of both patients. A novel heterozygous and homozygous missense mutation c.1817T>C; p.Leu606Pro was identified in patients 1 and 2, respectively. Based on the model prediction, proline substitution at Leu606 is likely to disrupt conversion between the active and inactive conformations at the extracellular to transmembrane domain interface of CASR. In addition, two extremely rare intronic variants in CASR (chr3:g.122180314A>G and chr3:g.122251601G>A, based on GRCh38) were identified in patient 1 and his mother. These variants might have contributed to the clinical manifestations of patient 1 who was heterozygous for the c.1817T>C; p.Leu606Pro variant. Subtotal parathyroidectomy was performed by removing three and a half parathyroid glands. So far, patient 1 has been in normocalcemia for 5 years. Patient 2 was in normocalcemia for 16 months after surgery and subsequently developed mild hypoparathyroidism which required only low-dose calcitriol treatment. CONCLUSION We report a novel heterozygous and homozygous missense variant (c.1817T>C; p.Leu606Pro) in CASR in two NSHPT patients. The mutation likely disrupts conformational changes of CASR and results in cinacalcet unresponsiveness. Intronic variants in CASR identified in the patient with heterozygous variant might have contributed to the clinical manifestations of the patient. Although total parathyroidectomy is widely accepted as a standard treatment for NSHPT, we demonstrate that subtotal parathyroidectomy is also an effective procedure to normalize Ca levels and allow these patients to be in normocalcemia or mild hypoparathyroidism, which is simply controlled by low-dose calcitriol treatment. Subtotal parathyroidectomy appeared to be an effective treatment for NSHPT regardless of the molecular etiologies.
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Affiliation(s)
- Karn Wejaphikul
- Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand,
| | - Prapai Dejkhamron
- Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Jiraporn Khorana
- Department of Surgery, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Clinical Epidemiology and Clinical Statistic, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Kirati Watcharachan
- Department of Surgery, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Worrachet Intachai
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, Massachusetts, USA
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency, Thailand Science Park, Khlong nueng, Thailand
| | - James R Ketudat Cairns
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand
- School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency, Thailand Science Park, Khlong nueng, Thailand
| | - Piranit Kantaputra
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
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9
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Kantaputra P, Daroontum T, Chuamanochan M, Chaowattanapanit S, Intachai W, Olsen B, Sastraruji T, Tongsima S, Ngamphiw C, Kampuansai J, Cox TC, Kiratikanon S. Loss of Function TGFBR2 Variant as a Contributing Factor in Generalized Pustular Psoriasis and Adult-Onset Immunodeficiency. Genes (Basel) 2022; 14:genes14010103. [PMID: 36672844 PMCID: PMC9859322 DOI: 10.3390/genes14010103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/22/2022] [Accepted: 12/24/2022] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Generalized pustular psoriasis (GPP; MIM 614204) is a rare multisystemic autoinflammatory disease, characterized by episodes of acute generalized erythema and scaling developed with the spread of numerous sterile pustules. Adult-onset immunodeficiency syndrome (AOID) with anti-interferon-γ autoantibodies is an immunodeficiency disorder associated with disruptive IFN-γ signaling. METHODS Clinical examination and whole exome sequencing (WES) were performed on 32 patients with pustular psoriasis phenotypes and 21 patients with AOID with pustular skin reaction. Histopathological and immunohistochemical studies were performed. RESULTS WES identified four Thai patients presenting with similar pustular phenotypes-two with a diagnosis of GPP and the other two with AOID-who were found to carry the same rare TGFBR2 frameshift mutation c.458del; p.Lys153SerfsTer35, which is predicted to result in a marked loss of functional TGFBR2 protein. The immunohistochemical studied showed overexpression of IL1B, IL6, IL17, IL23, IFNG, and KRT17, a hallmark of psoriatic skin lesions. Abnormal TGFB1 expression was observed in the pustular skin lesion of an AOID patient, suggesting disruption to TGFβ signaling is associated with the hyperproliferation of the psoriatic epidermis. CONCLUSIONS This study implicates disruptive TGFBR2-mediated signaling, via a shared truncating variant, c.458del; p.Lys153SerfsTer35, as a "predisposing risk factor" for GPP and AOID.
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Affiliation(s)
- Piranit Kantaputra
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Correspondence:
| | - Teerada Daroontum
- Department of Pathology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Mati Chuamanochan
- Division of Dermatology, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Suteeraporn Chaowattanapanit
- Division of Dermatology, Department of Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen 40000, Thailand
| | - Worrachet Intachai
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Thanapat Sastraruji
- Dental Research Center, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency (NSTDA), Thailand Science Park, Pathum Thani 12120, Thailand
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency (NSTDA), Thailand Science Park, Pathum Thani 12120, Thailand
| | - Jatupol Kampuansai
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Timothy C. Cox
- Departments of Oral & Craniofacial Sciences and Pediatrics, School of Dentistry and School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Salin Kiratikanon
- Division of Dermatology, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
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10
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Kantaputra P, Tripuwabhrut K, Jatooratthawichot P, Adisornkanj P, Hatsadaloi A, Porntrakoolsaree N, Kaewgaya M, Olsen B, Tongsima S, Ngamphiw C, Ketudat Cairns JR. Mutations in the WLS are associated with dental anomalies, torus palatinus, and torus mandibularis. Eur J Orthod 2022; 45:317-323. [DOI: 10.1093/ejo/cjac068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Summary
Background
Canonical and non-canonical WNT signaling are important for odontogenesis. WNT ligand secretion mediator (WLS; MIM611514) is required to transport lipid-modified WNT proteins from the Golgi to the cell membrane, where canonical and non-canonical WNT proteins are released into the extracellular milieu. Biallelic pathogenic variants in WLS are implicated in autosomal recessive Zaki syndrome (ZKS; MIM 619648), the only genetic condition known to be caused by pathogenic variants in WLS.
Objective
To investigate molecular etiology of dental anomalies in 250 patients with or without oral exostoses.
Patients and methods
Clinical and radiographic examination, and whole exome sequencing, were performed in the case of 250 patients with dental anomalies with or without oral exostoses.
Results
Four extremely rare heterozygous missense variants (p.Ile20Thr, p.Met46Leu, p.Ser453Ile and p.Leu516Phe) in WLS were identified in 11 patients with dental anomalies. In five of these patients, a torus palatinus or a torus mandibularis was observed.
Conclusion
We report for the first time the heterozygous WLS variants in patients with dental anomalies. Root maldevelopments in patients with WLS variants supports the role of canonical and non-canonical WNT signaling in root development. We also show that variants in WLS were implicated in torus palatinus and torus mandibularis. In addition, this is the first time that heterozygous carriers of WLS variants were found to manifest phenotypes. WLS variants were likely to have adverse effects on the concentration of WNT ligands delivered to the cell membrane, resulting in aberrant canonical and non-canonical WNT signaling, and subsequent phenotypes.
Limitations of the study
Patient’s positioning during the acquisition of panoramic radiography might have affected the appearance of the tooth structures. If we had all family members of each patient to study co-segregation between genotype and phenotype, it would have strengthened the association of WLS variants and the phenotypes.
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Affiliation(s)
- Piranit Kantaputra
- Center of Excellence in Medical Genetics Research, Chiang Mai University , Chiang Mai , Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University , Chiang Mai , Thailand
| | - Kanich Tripuwabhrut
- Division of Orthodontics, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University , Chiang Mai , Thailand
| | - Peeranat Jatooratthawichot
- School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology , Nakhon Ratchasima , Thailand
| | - Ploy Adisornkanj
- Center of Excellence in Medical Genetics Research, Chiang Mai University , Chiang Mai , Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University , Chiang Mai , Thailand
- Dental Department, Sawang Daen Din Crown Prince Hospital , Sakon Nakhon , Thailand
| | | | | | - Massupa Kaewgaya
- Center of Excellence in Medical Genetics Research, Chiang Mai University , Chiang Mai , Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Harvard University , Boston, MA , USA
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency (NSTDA), Thailand Science Park , Pathum Thani , Thailand
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency (NSTDA), Thailand Science Park , Pathum Thani , Thailand
| | - James R Ketudat Cairns
- School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology , Nakhon Ratchasima , Thailand
- Laboratory of Biochemistry, Chulabhorn Research Institute , Bangkok , Thailand
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11
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Kantaputra P, Jatooratthawichot P, Jintakanon K, Intachai W, Pradermdutsadeeporn P, Adisornkanj P, Tongsima S, Ngamphiw C, Olsen B, Tucker AS, Cairns JRK. Mutations in LRP6 highlight the role of WNT signalling in oral exostoses and dental anomalies. Arch Oral Biol 2022; 142:105514. [DOI: 10.1016/j.archoralbio.2022.105514] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/15/2022] [Accepted: 07/28/2022] [Indexed: 02/07/2023]
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12
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Kantaputra P, Guven Y, Tripuwabhrut K, Adisornkanj P, Hatsadaloi A, Kaewgahya M, Olsen B, Ngamphiw C, Jatooratthawichot P, Tongsima S, Ketudat Cairns JR. Mutations in LRP5 and BMP4 are associated with mesiodens, tooth agenesis, root malformation, and oral exostoses. Clin Genet 2022; 102:333-338. [PMID: 35754005 DOI: 10.1111/cge.14183] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/20/2022] [Accepted: 06/23/2022] [Indexed: 11/29/2022]
Abstract
WNT/β-catenin and BMP signaling pathways play important roles in the process of tooth development. Dysregulation of WNT/β-catenin and BMP signaling is implicated in a number of human malformations, including dental anomalies. Whole exome and Sanger sequencing identified seven patients with LRP5 mutations (p.Asn1121Asp, p.Asp856Asn, p.Val1433Met, and p.Val1245Met) and six patients with BMP4 mutations (p.Asn150Lys, p.Gly168Arg, p.Arg269Gln, and p.Ala42Glu). All patients were affected with isolated dental anomalies (dental anomalies with no other structural defects), including mesiodens, tooth agenesis, unseparated roots, narrow roots, shortened and tapered roots, and taurodontism. Five and a patients with LRP5 and BMP4 mutations had oral exostoses, respectively. Protein models of LRP5 mutations indicate the possible functional effects of the mutations. Here we report for the first time that mutations in LRP5 are associated with dental anomalies. LRP5 appears to be the first gene related to pathogenesis of mesiodens. We also show for the first time that in addition to tooth agenesis, mutations in BMP4 are also implicated in root maldevelopment and torus mandibularis. Sharing the phenotypes of the patients with LRP5 and BMP4 mutations, which include root maldevelopment, tooth agenesis, and torus mandibularis, implicates cross-talks between WNT/β-catenin and BMP signaling pathways, especially during root development.
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Affiliation(s)
- Piranit Kantaputra
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.,Division of Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Yeliz Guven
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Turkey
| | - Kanich Tripuwabhrut
- Division of Orthodontics, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Ploy Adisornkanj
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.,Division of Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.,Dental Department, Sawang Daen Din Crown Prince Hospital, Sakon Nakhon, Thailand
| | | | - Massupa Kaewgahya
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, MA, USA
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani, Thailand
| | - Peeranat Jatooratthawichot
- School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani, Thailand
| | - James R Ketudat Cairns
- School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
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13
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Ahlstrom CA, Woksepp H, Sandegren L, Mohsin M, Hasan B, Muzyka D, Hernandez J, Aguirre F, Tok A, Söderman J, Olsen B, Ramey AM, Bonnedahl J. Genomically diverse carbapenem resistant Enterobacteriaceae from wild birds provide insight into global patterns of spatiotemporal dissemination. Sci Total Environ 2022; 824:153632. [PMID: 35124031 DOI: 10.1016/j.scitotenv.2022.153632] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 01/25/2022] [Accepted: 01/29/2022] [Indexed: 06/14/2023]
Abstract
Carbapenem resistant Enterobacteriaceae (CRE) are a threat to public health globally, yet the role of the environment in the epidemiology of CRE remains elusive. Given that wild birds can acquire CRE, likely from foraging in anthropogenically impacted areas, and may aid in the maintenance and dissemination of CRE in the environment, a spatiotemporal comparison of isolates from different regions and timepoints may be useful for elucidating epidemiological information. Thus, we characterized the genomic diversity of CRE from fecal samples opportunistically collected from gulls (Larus spp.) inhabiting Alaska (USA), Chile, Spain, Turkey, and Ukraine and from black kites (Milvus migrans) sampled in Pakistan and assessed evidence for spatiotemporal patterns of dissemination. Within and among sampling locations, a high diversity of carbapenemases was found, including Klebsiella pneumoniae carbapenemase (KPC), New Delhi metallo-beta-lactamase (NDM), oxacillinase (OXA), and Verona integron Metallo beta-lactamase (VIM). Although the majority of genomic comparisons among samples did not provide evidence for spatial dissemination, we did find strong evidence for dissemination among Alaska, Spain, and Turkey. We also found strong evidence for temporal dissemination among samples collected in Alaska and Pakistan, though the majority of CRE clones were transitory and were not repeatedly detected among locations where samples were collected longitudinally. Carbapenemase-producing hypervirulent K. pneumoniae was isolated from gulls in Spain and Ukraine and some isolates harbored antimicrobial resistance genes conferring resistance to up to 10 different antibiotic classes, including colistin. Our results are consistent with local acquisition of CRE by wild birds with spatial dissemination influenced by intermediary transmission routes, likely involving humans. Furthermore, our results support the premise that anthropogenically-associated wild birds may be good sentinels for understanding the burden of clinically-relevant antimicrobial resistance in the local human population.
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Affiliation(s)
- Christina A Ahlstrom
- Alaska Science Center, U.S. Geological Survey, 4210 University Drive, Anchorage, AK 99508, USA
| | - Hanna Woksepp
- Department of Development and Public Health, Kalmar County Hospital, Kalmar 391 85, Sweden; Department of Medicine and Optometry, Linnaeus University, Kalmar 391 85, Sweden
| | - Linus Sandegren
- Department of Medical Biochemistry and Microbiology, Infection biology, antimicrobial resistance and immunology, Uppsala University, Uppsala SE-75185, Sweden
| | - Mashkoor Mohsin
- Institute of Microbiology, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Badrul Hasan
- Department of Medical Biochemistry and Microbiology, Infection biology, antimicrobial resistance and immunology, Uppsala University, Uppsala SE-75185, Sweden; Animal Bacteriology Section, Microbial Sciences, Pests and Diseases, Agriculture Victoria Research, Bundoora, Victoria 3083, Australia
| | - Denys Muzyka
- National Scientific Center, Institute of Experimental and Clinical Veterinary Medicine, Kharkiv 61023, Ukraine
| | - Jorge Hernandez
- Department of Clinical Microbiology, Kalmar County Hospital, Kalmar SE-39185, Sweden
| | - Filip Aguirre
- Department of Clinical Microbiology, Kalmar County Hospital, Kalmar SE-39185, Sweden
| | - Atalay Tok
- Zoonosis Science Center, Department of Medical Sciences, Uppsala University, Uppsala SE-75185, Sweden
| | - Jan Söderman
- Laboratory Medicine, Jönköping, Region Jönköping County, Department of Clinical and Experimental Medicine, Linköping University, Sweden
| | - Bjorn Olsen
- Zoonosis Science Center, Department of Medical Sciences, Uppsala University, Uppsala SE-75185, Sweden
| | - Andrew M Ramey
- Alaska Science Center, U.S. Geological Survey, 4210 University Drive, Anchorage, AK 99508, USA
| | - Jonas Bonnedahl
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping 581 83, Sweden; Department of Infectious Diseases, Region Kalmar County, Kalmar 391 85, Sweden.
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14
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Kantaputra P, Jatooratthawichot P, Tantachamroon O, Nanekrungsan K, Intachai W, Olsen B, Tongsima S, Ngamphiw C, Cairns JRK. Novel Dental Anomaly-associated Mutations in WNT10A Protein Binding Sites. Int Dent J 2022; 73:79-86. [PMID: 35537890 PMCID: PMC9875279 DOI: 10.1016/j.identj.2022.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 04/06/2022] [Indexed: 01/28/2023] Open
Abstract
OBJECTIVE WNT/β-catenin signaling is initiated by binding of a WNT protein to a Frizzled (FZD) receptor and a co-receptor, low-density lipoprotein (LDL) receptor-related protein 5 or 6 (LRP5/6). The objective of this study was to find the genetic variants responsible for dental anomalies found in 4 families. METHODS Clinical and radiographic examination and whole exome sequencing were performed on 5 patients affected with dental anomalies and the mutant proteins modeled. RESULTS Five patients were heterozygous for the WNT10A variants, including c.877C>T; p.Arg293Cys, c.874A>G; p.Ser292Gly, c.1042C>T; p.Arg348Cys, and c.1039G>T; p.347GluX. The p.Arg293Cys and p.Ser292Gly mutations are located in the WNT10A N-terminal domain region with binding sites for FZD receptor, porcupine, WNTLESS, and extracellular binding proteins, so they are likely to have adverse effects on binding these proteins. The p.Arg348Cys mutation, which is located in the binding site of LRP5/6 co-receptors, is postulated to result in impaired binding to these co-receptors. The nonsense mutation p.347GluX is predicted to result in the truncation of most of the C-terminal domain, which is likely to disrupt the binding of WNT10A to WNTLESS, the membrane protein that binds lipid-acylated WNT proteins to carry them from the endoplasmic reticulum to the cell surface and FZD. CONCLUSIONS Four novel mutations in WNT10A were identified in patients with isolated tooth agenesis. The mutations in the N-terminal domain and the interface between the N- and C-terminal domains of WNT10A in our patients are likely to disrupt its binding with FZD, LRP5/6, and various other proteins involved in WNT10A processing and transport, impair WNT and SHH signaling, and subsequently result in tooth agenesis, microdontia, and root maldevelopment.
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Affiliation(s)
- Piranit Kantaputra
- Center of Excellence in Medical Genetics Research, Chiang Mai University, Chiang Mai, Thailand,Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand,Corresponding author. Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry; Faculty of Dentistry, Chiang Mai University; Chiang Mai 50200, Thailand.
| | - Peeranat Jatooratthawichot
- School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | | | | | - Worrachet Intachai
- Center of Excellence in Medical Genetics Research, Chiang Mai University, Chiang Mai, Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, Massachusetts, USA
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency (NSTDA), Thailand Science Park, Pathum Thani, Thailand
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency (NSTDA), Thailand Science Park, Pathum Thani, Thailand
| | - James R. Ketudat Cairns
- School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand,Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand
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15
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Kantaputra P, Guven Y, Kalayci T, Özer PK, Panyarak W, Intachai W, Olsen B, Carlson BM, Praditsap O, Tongsima S, Ngamphiw C, Jatooratthawichot P, Tucker AS, Ketudat Cairns JR. Expanding genotypic and phenotypic spectrums of LTBP3 variants in dental anomalies and short stature syndrome. Clin Genet 2022; 102:66-71. [PMID: 35352826 DOI: 10.1111/cge.14134] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 03/23/2022] [Accepted: 03/24/2022] [Indexed: 11/28/2022]
Abstract
Mutations in LTBP3 are associated with Dental Anomalies and Short Stature syndrome (DASS; MIM 601216), which is characterized by hypoplastic type amelogenesis imperfecta, hypodontia, underdeveloped maxilla, short stature, brachyolmia, aneurysm and dissection of the thoracic aorta. Here we report a novel (p.Arg545ProfsTer22) and a recurrent (c.3107-2A > G) LTBP3 variants, in a Turkish family affected with DASS. The proband, who carried compound heterozygous variant c.3107-2A > G, p.Arg545ProfsTer22, was most severely affected with DASS. The proband's father, who carried the heterozygous variant c.3107-2A > G had short stature and prognathic mandible. The mother and brother of the proband carried the heterozygous variant p.Arg545ProfsTer22, but only the mother showed any DASS characteristics. The c.3107-2A > G and the p.Arg545ProfsTer22 variants are expected to result in abnormal LTPB3 protein, failure of TGFβ-LAP-LTBP3 complex formation, and subsequent disruption of TGFβ secretion and activation. This is the first report of heterozygous carriers of LTBP3 variants showing phenotypes. The new findings of DASS found in this family include taurodontism, single-rooted molars, abnormal dentin, calcified dental pulp blood vessels, prognathic mandible, failure of mandibular tooth eruption, interatrial septal aneurysm, secundum atrial septal defect, tricuspid valve prolapse, and a recurrent glenohumeral joint dislocation.
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Affiliation(s)
- Piranit Kantaputra
- Center of Excellence in Medical Genetics Research, Chiang Mai University, Chiang Mai, Thailand.,Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Yeliz Guven
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - Tugba Kalayci
- Department of Medical Genetics, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Pelin Karaca Özer
- Istanbul Medical Faculty, Department of Cardiology, Istanbul University, Istanbul, Turkey
| | - Wannakamon Panyarak
- Division of Oral and Maxillofacial Radiology, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Worrachet Intachai
- Center of Excellence in Medical Genetics Research, Chiang Mai University, Chiang Mai, Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, Massachusetts, USA
| | - Bruce M Carlson
- Department of Anatomy and Cell Biology, University of Michigan, Ann Arbor, Michigan, USA
| | - Oranud Praditsap
- Siriraj Genomics, Office of the Dean, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Peeranat Jatooratthawichot
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Abigail S Tucker
- Centre for Craniofacial and Regenerative Biology, King's College London, Guy's Hospital, London, UK
| | - James R Ketudat Cairns
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
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Kantaputra P, Guven Y, Aksu B, Kalayci T, Doğan C, Intachai W, Olsen B, Tongsima S, Ngamphiw C, Noppakun K. Distal renal tubular acidosis, autoimmune thyroiditis, enamel hypomaturation, and tooth agenesis caused by homozygosity of a novel double-nucleotide substitution in SLC4A4. J Am Dent Assoc 2022; 153:668-676. [DOI: 10.1016/j.adaj.2021.12.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/22/2021] [Accepted: 12/29/2021] [Indexed: 01/10/2023]
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Affiliation(s)
- Piranit Kantaputra
- Center of Excellence in Medical Genetics Research Chiang Mai University Chiang Mai Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry Chiang Mai University Chiang Mai Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine Harvard University Boston Massachusetts USA
| | - John A. McGrath
- St John’s Institute of Dermatology (Guy’s Campus) King’s College London London UK
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Olsen B, Weethee J, Reams A. 421: RETROGRADE CEREBRAL AIR EMBOLISM IN A PATIENT ON VENOVENOUS ECMO. Crit Care Med 2022. [DOI: 10.1097/01.ccm.0000808008.03767.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kantaputra PN, Dejkhamron P, Intachai W, Ngamphiw C, Kawasaki K, Ohazama A, Krisanaprakornkit S, Olsen B, Tongsima S, Ketudat Cairns JR. Juberg-Hayward syndrome is a cohesinopathy, caused by mutation in ESCO2. Eur J Orthod 2021; 43:45-50. [PMID: 32255174 DOI: 10.1093/ejo/cjaa023] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Juberg-Hayward syndrome (JHS; MIM 216100) is a rare autosomal recessive malformation syndrome, characterized by cleft lip/palate, microcephaly, ptosis, short stature, hypoplasia or aplasia of thumbs, and dislocation of radial head and fusion of humerus and radius leading to elbow restriction. OBJECTIVE To report for the first time the molecular aetiology of JHS. PATIENT AND METHODS Clinical and radiographic examination, whole exome sequencing, Sanger sequencing, mutant protein model construction, and in situ hybridization of Esco2 expression in mouse embryos were performed. RESULTS Clinical findings of the patient consisted of repaired cleft lip/palate, microcephaly, ptosis, short stature, delayed bone age, hypoplastic fingers and thumbs, clinodactyly of the fifth fingers, and humeroradial synostosis leading to elbow restriction. Intelligence is normal. Whole exome sequencing of the whole family showed a novel homozygous base substitution c.1654C>T in ESCO2 of the proband. The sister was homozygous for the wildtype variant. Parents were heterozygous for the mutation. The mutation is predicted to cause premature stop codon p.Arg552Ter. Mutations in ESCO2, a gene involved in cohesin complex formation, are known to cause Roberts/SC phocomelia syndrome. Roberts/SC phocomelia syndrome and JHS share similar clinical findings, including autosomal recessive inheritance, short stature, cleft lip/palate, severe upper limb anomalies, and hypoplastic digits. Esco2 expression during the early development of lip, palate, eyelid, digits, upper limb, and lower limb and truncated protein model are consistent with the defect. CONCLUSIONS Our study showed that Roberts/SC phocomelia syndrome and JHS are allelic and distinct entities. This is the first report demonstrating that mutation in ESCO2 causes JHS, a cohesinopathy.
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Affiliation(s)
- Piranit Nik Kantaputra
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.,Dentaland Clinic, Chiang Mai, Thailand
| | - Prapai Dejkhamron
- Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Worrachet Intachai
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Katsushige Kawasaki
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Atsushi Ohazama
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Suttichai Krisanaprakornkit
- Center of Excellence in Oral Biology, Chiang Mai University, Chiang Mai, Thailand.,Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA, USA
| | - Sissades Tongsima
- National Biobank of Thailand, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Jame R Ketudat Cairns
- School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
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20
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Kantaputra PN, Dejkhamron P, Intachai W, Ngamphiw C, Ketudat Cairns JR, Kawasaki K, Ohazama A, Olsen B, Tongsima S, Angkurawaranon S. A novel P3H1 mutation is associated with osteogenesis imperfecta type VIII and dental anomalies. Oral Surg Oral Med Oral Pathol Oral Radiol 2021; 132:e198-e207. [PMID: 33737016 DOI: 10.1016/j.oooo.2021.01.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/16/2020] [Accepted: 01/24/2021] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Our objective was to investigate the molecular etiology of osteogenesis imperfecta type VIII and dental anomalies in 4 siblings of a Karen tribe family. MATERIALS AND METHODS Four patients and their unaffected parents were studied by clinical and radiographic examination. In situ hybridization of P3h1 during early murine tooth development, whole-exome sequencing, and Sanger direct sequencing were performed. RESULTS A novel homozygous missense P3H1 mutation (NM_001243246.1; c.2141A>G; NP_001230175.1; p.Lys714Arg) was identified in all patients. Their unaffected parents were heterozygous for the mutation. The mutation is hypothesized to belong to isoform c of P3H1. Mutations in P3H1 are associated with autosomal recessive osteogenesis imperfecta type VIII. Hypodontia, a mesiodens, and single-rooted permanent second molars found in our patients have never been reported in patients with P3H1 mutations. Single-rooted second permanent molars or failure to form multiple roots implies effects of the P3H1 mutation on root development. CONCLUSIONS We report a novel P3H1 mutation as the underlying cause of osteogenesis imperfecta type VIII with dental anomalies. Our study suggests that isoform c of P3H1 is also a functional isoform of P3H1. We report, for the first time, to our knowledge, the association of P3H1 mutation and osteogenesis imperfecta type VIII with dental anomalies.
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Affiliation(s)
- Piranit Nik Kantaputra
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand; Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University.
| | - Prapai Dejkhamron
- Department of Pediatrics, Faculty of Medicine, Chiang Mai University
| | - Worrachet Intachai
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency, Khlong Luang, Pathum Thani, Thailand
| | - James R Ketudat Cairns
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand; School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Katsushige Kawasaki
- Division of Oral Anatomy, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Atsushi Ohazama
- Division of Oral Anatomy, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA, USA
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency, Khlong Luang, Pathum Thani, Thailand
| | - Salita Angkurawaranon
- Division of Diagnostic Radiology, Department of Radiology, Faculty of Medicine, Chiang Mai University
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Kantaputra PN, Dejkhamron P, Tongsima S, Ngamphiw C, Intachai W, Ngiwsara L, Sawangareetrakul P, Svasti J, Olsen B, Cairns JRK, Bumroongkit K. Juberg-Hayward syndrome and Roberts syndrome are allelic, caused by mutations in ESCO2. Arch Oral Biol 2020; 119:104918. [PMID: 32977150 DOI: 10.1016/j.archoralbio.2020.104918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 08/10/2020] [Accepted: 09/06/2020] [Indexed: 01/04/2023]
Abstract
OBJECTIVE Juberg-Hayward syndrome (JHS; MIM 216100) is a rare autosomal recessive malformation syndrome, characterized by cleft lip/palate, microcephaly, ptosis, hypoplasia or aplasia of thumbs, short stature, dislocation of radial head, and fusion of humerus and radius leading to elbow restriction. A homozygous mutation in ESCO2 has recently been reported to cause Juberg-Hayward syndrome. Our objective was to investigate the molecular etiology of Juberg-Hayward syndrome in two affected Lisu tribe brothers. MATERIALS AND METHODS Two patients, the unaffected parents, and two unaffected siblings were studied. Clinical and radiographic examination, whole exome sequencing, Sanger sequencing, Western blot analysis, and chromosome testing were performed. RESULTS Two affected brothers had characteristic features of Juberg-Hayward syndrome, except for the absence of microcephaly. The elder brother had bilateral cleft lip and palate, short stature, humeroradial synostosis, and simple partial seizure with secondary generalization. The younger brother had unilateral cleft lip and palate, short stature, and dislocation of radial heads. The homozygous (c.1654C > T; p.Arg552Ter) mutation in ESCO2 was identified in both patients. The other unaffected members of the family were heterozygous for the mutation. The presence of humeroradial synostosis and radial head dislocation in the same family is consistent with both being in the same spectrum of forearm malformations. Chromosome testing of the affected patients showed premature centromere separation. Western blot analysis showed reduced amount of truncated protein. CONCLUSION Our findings confirm that a homozygous mutation in ESCO2 is the underlying cause of Juberg-Hayward syndrome. Microcephaly does not appear to be a consistent feature of the syndrome.
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Affiliation(s)
- Piranit Nik Kantaputra
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand; Dentaland Clinic, Chiang Mai, Thailand.
| | - Prapai Dejkhamron
- Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency, Khlong Luang, Pathum Thani 12120, Thailand
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency, Khlong Luang, Pathum Thani 12120, Thailand
| | - Worrachet Intachai
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Lukana Ngiwsara
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand
| | | | - Jisnuson Svasti
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA, USA
| | - James R Ketudat Cairns
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand; School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Kanokkan Bumroongkit
- Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
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Tananuvat N, Tananuvat R, Chartapisak W, Mahanupab P, Hokierti C, Srikummool M, Kampuansai J, Intachai W, Olsen B, Ketudat Cairns JR, Kantaputra P. Harboyan syndrome: novel SLC4A11 mutation, clinical manifestations, and outcome of corneal transplantation. J Hum Genet 2020; 66:193-203. [PMID: 32884076 DOI: 10.1038/s10038-020-00834-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/20/2020] [Accepted: 08/27/2020] [Indexed: 11/10/2022]
Abstract
Harboyan syndrome or corneal dystrophy and progressive deafness (MIM #217400) is characterized by congenital hereditary endothelial dystrophy (CHED) and progressive, sensorineural hearing loss. Mutations in SLC4A11 are responsible for this rare genetic syndrome. Eight patients from seven unrelated families affected with Harboyan Syndrome with mean follow-up of 12.0 ± 0.9 years were thoroughly investigated for the ocular, hearing, and kidney function abnormalities and the outcome of penetrating keratoplasty (PK). Mutation analysis of SLC4A11 was performed. All patients presented with bilateral cloudy corneas since birth. Sensorineural hearing loss was detected in all patients. Seven patients (11 eyes) underwent PK with the median age at surgery of 10.1 years (7.1-22.9). The overall corneal graft survival rate after primary PK was 72.7% (8/11 eyes). The mean graft survival time was 94.6 months (95% CI 83.1-126.0). All patients had unremarkable kidney function. The c.2264G>A (p.Arg755Gln) mutation in SCL4A11 was detected in most patients (87.5%). All unrelated Karen tribe patients had p.Arg755Gln mutation, suggestive of founder effect. We found the allele frequency of this variant in the Karen population to be 0.01. The c.2263C>T (p.Arg755Trp) mutation was found in one patient with mild phenotype and the novel truncating protein mutation c.2127delG (p.Gly710fsx*25) in SCL4A11 was identified in two Thai sisters. Visual outcome and graft survival after PK were satisfactory. Our study shows that all studied patients with SLC4A11 mutations had CHED and sensorineural hearing loss, and SLC4A11 mutations were not related to the onset and severity of hearing loss or outcome of keratoplasty.
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Affiliation(s)
- Napaporn Tananuvat
- Department of Ophthalmology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Rak Tananuvat
- Department of Otolaryngology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Wattana Chartapisak
- Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Pongsak Mahanupab
- Department of Pathology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | | | - Metawee Srikummool
- Department of Biochemistry, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Jatupol Kampuansai
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Worrachet Intachai
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA, USA
| | - James R Ketudat Cairns
- School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand.,Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand
| | - Piranit Kantaputra
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
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Tronstad PK, Simpson LVH, Olsen B, Pfeffer F, Karliczek A. Low rate of local recurrence detection by rectoscopy in follow-up of rectal cancer. Colorectal Dis 2020; 22:254-260. [PMID: 31556190 DOI: 10.1111/codi.14858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 08/23/2019] [Indexed: 02/08/2023]
Abstract
AIM The main aim of this study was to examine the effectiveness of rectoscopy for detecting local recurrence of rectal cancer in patients following low anterior resection. METHOD This was a retrospective study of 201 patients, who underwent low anterior resection for rectal or rectosigmoid cancer between 2007 and 2009 and who were followed up with rigid rectoscopy and imaging. A total of 91 patients were excluded from the analysis for various reasons, leaving 110 patients eligible for analysis. RESULTS A total of 613 rectoscopies were performed, and 48 biopsies taken. Six local recurrences were detected in the 110 patients, three of which were first detected by rectoscopy and three by CT. Two of the local recurrences were detected outside the follow-up programme because of symptoms: one by rectoscopy and one by CT. Three of 613 (0.5%) rectoscopies led to detection of local recurrence. The sensitivity and specificity of rectoscopy to detect local recurrence was 0.50 and 0.93, respectively. Nineteen distant metastases were detected, and two patients had both local recurrence and distant metastasis. All local recurrences and distant metastases were detected within 48 months of surgery. CONCLUSION Rigid rectoscopy is poor at detecting local recurrence. Only 3 out of 613 rectoscopies (0.5%) detected local recurrence. Due to extramural growth of some recurrences, the sensitivity is also very low. Based on our results, routine rectoscopy in the surveillance of asymptomatic patients cannot be recommended.
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Affiliation(s)
- P K Tronstad
- Department of Gastrointestinal Surgery, Haukeland University Hospital, Bergen, Norway
| | - L V Hume Simpson
- Department of Gastrointestinal Surgery, Haukeland University Hospital, Bergen, Norway
| | - B Olsen
- Department of Gastrointestinal Surgery, Haukeland University Hospital, Bergen, Norway
| | - F Pfeffer
- Department of Gastrointestinal Surgery, Haukeland University Hospital, Bergen, Norway.,Clinical Institute 1, University of Bergen, Bergen, Norway
| | - A Karliczek
- Department of Gastrointestinal Surgery, Haukeland University Hospital, Bergen, Norway.,Clinical Institute 1, University of Bergen, Bergen, Norway
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Volloch V, Olsen B, Rits S. Alzheimer's Disease is Driven by Intraneuronally Retained Beta-Amyloid Produced in the AD-Specific, βAPP-Independent Pathway: Current Perspective and Experimental Models for Tomorrow. Ann Integr Mol Med 2020; 2:90-114. [PMID: 32617536 PMCID: PMC7331974 DOI: 10.33597/aimm.02-1007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A view of the origin and progression of Alzheimer's disease, AD, prevailing until now and formalized as the Amyloid Cascade Hypothesis theory, maintains that the disease is initiated by overproduction of beta-amyloid, Aβ, which is generated solely by the Aβ precursor protein, βAPP, proteolytic pathway and secreted from the cell. Consequent extracellular accumulation of Aβ triggers a cascade of molecular and cellular events leading to neurodegeneration that starts early in life, progresses as one prolonged process, builds up for decades, and culminates in symptomatic manifestations of the disease late in life. In this paradigm, a time window for commencement of therapeutic intervention is small and accessible only early in life. The outlook introduced in the present study is fundamentally different. It posits that the βAPP proteolytic/secretory pathway of Aβ production causes AD in humans no more than it does in either short- or long-lived non-human mammals that share this pathway with humans, accumulate beta-amyloid as they age, but do not develop the disease. Alzheimer's disease, according to this outlook, is driven by an additional powerful AD-specific pathway of Aβ production that operates in affected humans, is completely independent of the βAPP precursor, and is not available in non-human mammals. The role of the βAPP proteolytic pathway in the disease in humans is activation of this additional AD-specific Aβ production pathway. This occurs through accumulation of intracellular Aβ, primarily via ApoE-assisted cellular uptake of secreted beta-amyloid, but also through retention of a fraction of Aβ produced in the βAPP proteolytic pathway. With time, accumulated intracellular Aβ triggers mitochondrial dysfunction. In turn, cellular stresses associated with mitochondrial dysfunction, including ER stress, activate a second, AD-specific, Aβ production pathway: Asymmetric RNA-dependent βAPP mRNA amplification; animal βAPP mRNA is ineligible for this process. In this pathway, every conventionally produced βAPP mRNA molecule serves potentially as a template for production of severely 5'-truncated mRNA encoding not the βAPP but its C99 fragment (hence "asymmetric"), the immediate precursor of Aβ. Thus produced, N-terminal signal peptide-lacking C99 is processed not in the secretory pathway on the plasma membrane, but at the intracellular membrane sites, apparently in a neuron-specific manner. The resulting Aβ is, therefore, not secreted but is retained intraneuronally and accumulates rapidly within the cell. Increased levels of intracellular Aβ augment mitochondrial dysfunction, which, in turn, sustains the activity of the βAPP mRNA amplification pathway. These self-propagating mutual Aβ overproduction/mitochondrial dysfunction feedback cycles constitute a formidable two-stroke engine, an engine that drives Alzheimer's disease. The present outlook envisions Alzheimer's disorder as a two-stage disease. The first stage is a slow process of intracellular beta-amyloid accumulation. It results neither in significant neurodegenerative damage, nor in manifestation of the disease. The second stage commences with the activation of the βAPP mRNA amplification pathway shortly before symptomatic onset of the disease, sharply increases the rate of Aβ generation and the extent of its intraneuronal accumulation, produces significant damages, triggers AD symptoms, and is fast. In this paradigm, the time window of therapeutic intervention is wide open, and preventive treatment can be initiated any time, even late in life, prior to commencement of the second stage of the disease. Moreover, there are good reasons to believe that with a drug blocking the βAPP mRNA amplification pathway, it would be possible not only to preempt the disease but also to stop and to reverse it even when early AD symptoms have already manifested. There are numerous experimental models of AD, all based on a notion of the exceptionality of βAPP proteolytic/secretory pathway in Aβ production in the disease. However, with no drug even remotely effective in Alzheimer's disease, a long list of candidate drugs that succeeded remarkably in animal models, yet failed utterly in human clinical trials of potential AD drugs, attests to the inadequacy of currently employed AD models. The concept of a renewable supply of beta-amyloid, produced in the βAPP mRNA amplification pathway and retained intraneuronally in Alzheimer's disease, explains spectacular failures of both BACE inhibition and Aβ-immunotherapy in human clinical trials. This concept also forms the basis of a new generation of animal and cell-based experimental models of AD, described in the present study. These models incorporate Aβ- or C99-encoding mRNA amplification pathways of Aβ production, as well as intracellular retention of their product, and can support not only further investigation of molecular mechanisms of AD but also screening for and testing of candidate drugs aimed at therapeutic targets suggested by the present study.
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Affiliation(s)
- Vladimir Volloch
- Department of Developmental Biology, Harvard School of Dental Medicine, USA
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, USA
| | - Sophia Rits
- Division of Molecular Medicine, Children’s Hospital, Boston, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, USA
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25
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Abstract
A paradigm shift is under way in the Alzheimer's field. A view of Alzheimer's disease, AD, prevailing until now, the old paradigm, maintains that it is initiated and driven by the overproduction and extracellular accumulation of beta-amyloid, Aβ; a peptide assumed to be derived, both in health and disease, solely by proteolysis of its large precursor, βAPP. In AD, according to this view, Aβ overproduction-associated neurodegeneration begins early, accumulates throughout the lifespan, and manifests symptomatically late in life. A number of drugs, designed within the framework of exceptionality of the βAPP proteolytic/secretory pathway in Aβ production in Alzheimer's disease, achieved spectacular successes in treatment, even the reversal, of AD symptoms in animal models. Without exception, they all exhibited equally spectacular failures in human clinical trials. This paradigm provides few causes for optimism with regard to prevention and treatment of AD. In its context, the disease is considered untreatable in the symptomatic phase; even prodromal cases are assumed too advanced for treatment because Aβ-triggered damages have been accumulating for preceding decades, presumably starting in the early twenties and, to be effective, this is when therapeutic intervention should commence and continue for life. The new paradigm does not dispute the seminal role of Aβ in AD but posits that beta-amyloid produced in the βAPP proteolytic/secretory pathway causes AD in humans no more than it does in non-human mammals that share this pathway with humans, accumulate Aβ as they age, but do not develop the disease. Alzheimer's disease, according to this outlook, is driven by the AD-specific pathway of Aβ production, independent of βAPP and absent in animals. Its activation, late in life, occurs through accumulation, via both cellular uptake of secreted Aβ and neuronal retention of a fraction of beta-amyloid produced in the βAPP proteolytic pathway, of intraneuronal Aβ, which triggers mitochondrial dysfunction. Cellular stresses associated with mitochondrial dysfunction, or, probably, the integrated stress response, ISR, elicited by it, activate an AD-specific Aβ production pathway. In it, every conventionally produced βAPP mRNA molecule potentially serves repeatedly as a template for production of severely 5'-truncated mRNA encoding C99 fragment of βAPP, the immediate precursor of Aβ that is processed in a non-secretory pathway, apparently in a neuron-specific manner. The resulting intraneuronally retained Aβ augments mitochondrial dysfunction, which, in turn, sustains the activity of the βAPP mRNA amplification pathway. These self-propagating Aβ overproduction/mitochondrial dysfunction mutual feedback cycles constitute the engine that drives AD and ultimately triggers neuronal death. In this paradigm, preventive treatment can be initiated any time prior to commencement of βAPP mRNA amplification. Moreover, there are good reasons to believe that with a drug blocking the amplification pathway, it would be possible not only to preempt the disease but also stop and reverse it even when early AD symptoms are already manifested. Thus, the new paradigm introduces a novel theory of Alzheimer's disease. It explains the observed discordances, determines defined therapeutic targets, provides blueprints for a new generation of conceptually distinct AD models and specifies design of a reporter for the mRNA amplification pathway. Most importantly, it offers detailed guidance and tangible hope for prevention of the disease and its treatment at the early symptomatic stages.
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Affiliation(s)
- Vladimir Volloch
- Department of Developmental Biology, Harvard School of Dental Medicine, USA
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, USA
| | - Sophia Rits
- Division of Molecular Medicine, Children's Hospital, Boston, USA.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, USA
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26
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Lees KE, Lang D, Graham A, Burnett J, Olsen B, Sivers-Teixeira T, Rosen AE, Elman A. AN ENVIRONMENTAL SCAN OF EMPIRICAL AND PRACTICE-BASED EVIDENCE TO INFORM CARE MODEL DEVELOPMENT. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- K E Lees
- Northeastern University, West Roxbury, Massachusetts, United States
| | - D Lang
- University of Massachusetts Medical School, Worcester, MA, USA
| | - A Graham
- Executive Office of Elder Affairs, Boston, MA, USA
| | - J Burnett
- University of Texas Health Science Center, Houston, TX, USA; Texas Elder Abuse and Mistreatment Institute, Houston, TX, USA
| | - B Olsen
- University of Texas Health Science Center, Houston, TX, USA; Texas Elder Abuse and Mistreatment Institute, Houston, TX, USA
| | - T Sivers-Teixeira
- Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - A E Rosen
- Weill Cornell Medical College, New York, NY, USA; New York-Presbyterian Health Care System, New York, NY, USA
| | - A Elman
- Weill Cornell Medicine, New York, NY, USA
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Galdamez G, Avent E, Rowan J, Wilber KH, Mosqueda L, Olsen B, Gassoumis ZD. ELDER ABUSE MULTIDISCIPLINARY TEAMS AND NETWORKS: UNDERSTANDING NATIONAL INTERVENTION APPROACHES. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- G Galdamez
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, United States
| | - E Avent
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA USA
| | - J Rowan
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - K H Wilber
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - L Mosqueda
- Keck School of Medicine of USC, Los Angeles, CA, USA
| | - B Olsen
- Keck School of Medicine of USC, Los Angeles, CA, USA
| | - Z D Gassoumis
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
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Dyer CB, Mosqueda L, Lachs MS, Bonner A, Rosen AE, Olsen B, Sivers-Teixeira T, Burnett J. A STREAMLINED ELDER MISTREATMENT CARE MODEL FOR HOSPITAL EMERGENCY DEPARTMENTS. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- C B Dyer
- University of Texas Health Science Center, Houston, TX, USA, Houston, Texas, United States
| | - L Mosqueda
- Keck School of Medicine University of California, Los Angeles, CA, USA
| | - M S Lachs
- Weill Cornell Medical College, New York, NY, USA; New York-Presbyterian Health Care System, New York, NY, USA
| | - A Bonner
- Executive Office of Elder Affairs, Boston, MA, USA
| | - A E Rosen
- Weill Cornell Medical College, New York, NY, USA; New York-Presbyterian Health Care System, New York, NY, USA
| | - B Olsen
- Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - T Sivers-Teixeira
- Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - J Burnett
- University of Texas Health Science Center, Houston, TX, USA; Texas Elder Abuse and Mistreatment Institute, Houston, TX, USA
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Fredheim S, Foli-Andersen P, Laerkholm G, Svensson J, Juhl CB, Olsen B, Pilgaard K, Johannesen J. Adrenaline and cortisol levels are lower during nighttime than daytime hypoglycaemia in children with type 1 diabetes. Acta Paediatr 2018. [PMID: 29520851 DOI: 10.1111/apa.14310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
AIM We investigated children's counter regulatory hormone profiles during a hyperinsulinaemic hypoglycaemic clamp procedure at day and night. METHODS In 2013, we assessed the counter regulatory response to hypoglycaemia in eight outpatients with type 1 diabetes, recruited from the Herlev Hospital, Denmark, at a mean age of 9.6 ± 2.3 years. Hyperinsulinaemic 80 mU/m2 /min clamps were performed with a stepwise reduction in plasma glucose from euglycaemia (7-9 mmol/L) to hypoglycaemia (<3.5 mmol/L) and the glucose nadir (≤2.2 mmol/L) during the day and night. Adrenaline, cortisol, glucagon and growth hormone levels were assessed. RESULTS Adrenaline and growth hormone levels were higher during the day versus the night (p = 0.04 and p = 0.01, respectively). However, at the glucose nadir, the level of adrenaline was lower during the night than the day (0.6 ± 0.2 versus 1.9 ± 0.5 nmol/L, p = 0.016) and cortisol was lower during the day than the night (42 ± 15 versus 319 ± 81 nmol/L, p = 0.016). No differences were demonstrated for glucagon and growth hormone levels based on the same criteria. CONCLUSION The adrenaline response was blunted during nocturnal iatrogenic hypoglycaemia in our study cohort, and no increase in cortisol levels was demonstrated.
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Affiliation(s)
- S Fredheim
- Department of Paediatrics; CPH-Direct; Copenhagen University Hospital, Herlev and Gentofte; Herlev Denmark
| | - P Foli-Andersen
- Department of Paediatrics; CPH-Direct; Copenhagen University Hospital, Herlev and Gentofte; Herlev Denmark
| | - G Laerkholm
- Department of Paediatrics; CPH-Direct; Copenhagen University Hospital, Herlev and Gentofte; Herlev Denmark
| | - J Svensson
- Department of Paediatrics; CPH-Direct; Copenhagen University Hospital, Herlev and Gentofte; Herlev Denmark
- Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
| | - CB Juhl
- HypoSafe A/S; Lyngby Denmark
| | - B Olsen
- Department of Paediatrics; CPH-Direct; Copenhagen University Hospital, Herlev and Gentofte; Herlev Denmark
| | - K Pilgaard
- Department of Paediatrics; CPH-Direct; Copenhagen University Hospital, Herlev and Gentofte; Herlev Denmark
| | - J Johannesen
- Department of Paediatrics; CPH-Direct; Copenhagen University Hospital, Herlev and Gentofte; Herlev Denmark
- Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
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Affiliation(s)
- B. McGuire
- Department of Ecology and Evolutionary Biology Cornell University Ithaca NY USA
| | - B. Olsen
- Department of Ecology and Evolutionary Biology Cornell University Ithaca NY USA
| | - K. E. Bemis
- Department of Ecology and Evolutionary Biology Cornell University Ithaca NY USA
| | - D. Orantes
- Department of Ecology and Evolutionary Biology Cornell University Ithaca NY USA
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Ejaz F, Olsen B, Lamont H. ELDER ABUSE PREVENTION: LESSONS FROM FOUR INITIATIVES. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- F.K. Ejaz
- Benjamin Rose Institute on Aging, Ohio
| | - B. Olsen
- University of Southern California
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32
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Olsen B, Nguyen A, Coulourides Kogan A, Weber C, Hirst S, Mosqueda L. ABUSE INTERVENTION/PREVENTION MODEL AMONG PERSONS WITH DEMENTIA AND THEIR CAREGIVERS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- B. Olsen
- University of Southern California, Alhambra, California
| | - A. Nguyen
- University of Southern California, Alhambra, California
| | | | - C. Weber
- University of Southern California, Alhambra, California
| | - S. Hirst
- University of Southern California, Alhambra, California
| | - L. Mosqueda
- University of Southern California, Alhambra, California
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Hurt AC, Su YCF, Aban M, Peck H, Lau H, Baas C, Deng YM, Spirason N, Ellström P, Hernandez J, Olsen B, Barr IG, Vijaykrishna D, Gonzalez-Acuna D. Evidence for the Introduction, Reassortment, and Persistence of Diverse Influenza A Viruses in Antarctica. J Virol 2016; 90:9674-9682. [PMID: 27535050 PMCID: PMC5068520 DOI: 10.1128/jvi.01404-16] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 08/05/2016] [Indexed: 11/20/2022] Open
Abstract
Avian influenza virus (AIV) surveillance in Antarctica during 2013 revealed the prevalence of evolutionarily distinct influenza viruses of the H11N2 subtype in Adélie penguins. Here we present results from the continued surveillance of AIV on the Antarctic Peninsula during 2014 and 2015. In addition to the continued detection of H11 subtype viruses in a snowy sheathbill during 2014, we isolated a novel H5N5 subtype virus from a chinstrap penguin during 2015. Gene sequencing and phylogenetic analysis revealed that the H11 virus detected in 2014 had a >99.1% nucleotide similarity to the H11N2 viruses isolated in 2013, suggesting the continued prevalence of this virus in Antarctica over multiple years. However, phylogenetic analysis of the H5N5 virus showed that the genome segments were recently introduced to the continent, except for the NP gene, which was similar to that in the endemic H11N2 viruses. Our analysis indicates geographically diverse origins for the H5N5 virus genes, with the majority of its genome segments derived from North American lineage viruses but the neuraminidase gene derived from a Eurasian lineage virus. In summary, we show the persistence of AIV lineages in Antarctica over multiple years, the recent introduction of gene segments from diverse regions, and reassortment between different AIV lineages in Antarctica, which together significantly increase our understanding of AIV ecology in this fragile and pristine environment. IMPORTANCE Analysis of avian influenza viruses (AIVs) detected in Antarctica reveals both the relatively recent introduction of an H5N5 AIV, predominantly of North American-like origin, and the persistence of an evolutionarily divergent H11 AIV. These data demonstrate that the flow of viruses from North America may be more common than initially thought and that, once introduced, these AIVs have the potential to be maintained within Antarctica. The future introduction of AIVs from North America into the Antarctic Peninsula is of particular concern given that highly pathogenic H5Nx viruses have recently been circulating among wild birds in parts of Canada and the Unites States following the movement of these viruses from Eurasia via migratory birds. The introduction of a highly pathogenic influenza virus in penguin colonies within Antarctica might have devastating consequences.
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Affiliation(s)
- Aeron C Hurt
- WHO Collaborating Centre for Reference and Research on Influenza, Parkville, Victoria, Australia University of Melbourne, Melbourne School of Population and Global Health, Parkville, Victoria, Australia
| | - Yvonne C F Su
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore
| | - Malet Aban
- WHO Collaborating Centre for Reference and Research on Influenza, Parkville, Victoria, Australia
| | - Heidi Peck
- WHO Collaborating Centre for Reference and Research on Influenza, Parkville, Victoria, Australia
| | - Hilda Lau
- WHO Collaborating Centre for Reference and Research on Influenza, Parkville, Victoria, Australia
| | - Chantal Baas
- WHO Collaborating Centre for Reference and Research on Influenza, Parkville, Victoria, Australia
| | - Yi-Mo Deng
- WHO Collaborating Centre for Reference and Research on Influenza, Parkville, Victoria, Australia
| | - Natalie Spirason
- WHO Collaborating Centre for Reference and Research on Influenza, Parkville, Victoria, Australia
| | - Patrik Ellström
- Zoonosis Science Center, IMBIM, Uppsala University, Uppsala, Sweden
| | - Jorge Hernandez
- Zoonosis Science Center, IMBIM, Uppsala University, Uppsala, Sweden Department of Microbiology, Kalmar County Hospital, Kalmar, Sweden
| | - Bjorn Olsen
- Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Ian G Barr
- WHO Collaborating Centre for Reference and Research on Influenza, Parkville, Victoria, Australia
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Osbjer K, Berg M, Sokerya S, Chheng K, San S, Davun H, Magnusson U, Olsen B, Zohari S. Influenza A Virus in Backyard Pigs and Poultry in Rural Cambodia. Transbound Emerg Dis 2016; 64:1557-1568. [PMID: 27484711 DOI: 10.1111/tbed.12547] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Indexed: 11/27/2022]
Abstract
Surveillance of influenza virus in humans and livestock is critical, given the worldwide public health threats and livestock production losses. Livestock farming involving close proximity between humans, pigs and poultry is often practised by smallholders in low-income countries and is considered an important driver of influenza virus evolution. This study determined the prevalence and genetic characteristics of influenza A virus (IAV) in backyard pigs and poultry in Cambodia. A total of 751 animals were tested by matrix gene-based rRT-PCR, and influenza virus was detected in 1.5% of sampled pigs, 1.4% of chickens and 1.0% of ducks, but not in pigeons. Full-length genome sequencing confirmed triple reassortant H3N2 in all IAV-positive pigs and various low pathogenic avian influenza subtypes in poultry. Phylogenetic analysis of the swine influenza viruses revealed that these had haemagglutinin and neuraminidase genes originating from human H3N2 viruses previously isolated in South-East Asia. Phylogenetic analysis also revealed that several of the avian influenza subtypes detected were closely related to internal viral genes from highly pathogenic H5N1 and H9N2 formerly sequenced in the region. High sequence homology was likewise found with influenza A viruses circulating in pigs, poultry and wild birds in China and Vietnam, suggesting transboundary introduction and cocirculation of the various influenza subtypes. In conclusion, highly pathogenic subtypes of influenza virus seem rare in backyard poultry, but virus reassortment, involving potentially zoonotic and pandemic subtypes, appears to occur frequently in smallholder pigs and poultry. Increased targeted surveillance and monitoring of influenza circulation on smallholdings would further improve understanding of the transmission dynamics and evolution of influenza viruses in humans, pigs and poultry in the Mekong subregion and could contribute to limit the influenza burden.
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Affiliation(s)
- K Osbjer
- Division of Reproduction, Department of Clinical Sciences, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - M Berg
- Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - S Sokerya
- Centre for Livestock and Agriculture Development, Phnom Penh, Cambodia
| | - K Chheng
- National Institute of Public Health, Phnom Penh, Cambodia
| | - S San
- National Veterinary Research Institute, Phnom Penh, Cambodia
| | - H Davun
- National Veterinary Research Institute, Phnom Penh, Cambodia
| | - U Magnusson
- Division of Reproduction, Department of Clinical Sciences, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - B Olsen
- Infectious Diseases, Zoonosis Science Center, Department of Medical Sciences and IMBIM, Uppsala University (UU), Uppsala, Sweden
| | - S Zohari
- Department of Microbiology, National Veterinary Institute, Uppsala, Sweden
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35
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Johansen A, Kanijo B, Fredheim S, Olsen B, Hertz B, Lauridsen MH, Andersen MLM, Mortensen HB, Svensson J. Prevalence and predictors of severe hypoglycemia in Danish children and adolescents with diabetes. Pediatr Diabetes 2015; 16:354-60. [PMID: 25039921 DOI: 10.1111/pedi.12171] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Revised: 05/31/2014] [Accepted: 06/06/2014] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVE To investigate the prevalence of severe hypoglycemia in Danish children and adolescents with type 1 diabetes and to pinpoint predictors of this acute complication in children on modern treatment modalities. RESEARCH DESIGN AND METHODS The study is based on data from DanDiabKids, a national diabetes register for children and adolescents. The register contains data on patients with type 1 diabetes with an ascertainment rate of 99%. Data from 3320 patients aged 0-18 yr was included in the study period from 1998 to 2009 and analyzed using a negative binomial model. RESULTS One thousand nine hundred and ninety-nine episodes of severe hypoglycemia in 867 patients were registered conferring an overall incidence of severe hypoglycemia of 15.1 [95% confident interval (CI): 13.8; 16.4] per 100 patient years. This remained unchanged during the study period. Duration of diabetes, age and treatment in centers managing less than 100 patients significantly increased the risk of severe hypoglycemia (p < 0.001). Patients on insulin pump therapy had a 42% reduced risk of severe hypoglycemia compared with pen treated patients (p = 0.01). Patients treated with five or more daily insulin injections had a 31% (95% CI: 17; 49) reduced risk of severe hypoglycemia compared to patients on fewer daily injections (p = 0.015). CONCLUSIONS Despite improvements in metabolic control over a decade the prevalence of severe hypoglycemic events remained unchanged. More intensive treatments such as insulin pump therapy and multiple daily injections on a national level seems to be a protective factor for developing severe hypoglycemia up to 2009.
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Affiliation(s)
- A Johansen
- Department of Pediatrics, Herlev University Hospital, Herlev, Denmark
| | - B Kanijo
- Department of Pediatrics, Herlev University Hospital, Herlev, Denmark
| | - S Fredheim
- Department of Pediatrics, Herlev University Hospital, Herlev, Denmark.,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - B Olsen
- Department of Pediatrics, Herlev University Hospital, Herlev, Denmark
| | - B Hertz
- Department of Pediatrics, Viborg Regional Hospital, Viborg, Denmark
| | - M H Lauridsen
- Department of Pediatrics, Viborg Regional Hospital, Viborg, Denmark
| | - M L M Andersen
- Department of Pediatrics, Herlev University Hospital, Herlev, Denmark
| | - H B Mortensen
- Department of Pediatrics, Herlev University Hospital, Herlev, Denmark.,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - J Svensson
- Department of Pediatrics, Herlev University Hospital, Herlev, Denmark.,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Overgaard Ingeholm I, Svensson J, Olsen B, Lyngsøe L, Thomsen J, Johannesen J. Characterization of metabolic responders on CSII treatment amongst children and adolescents in Denmark from 2007 to 2013. Diabetes Res Clin Pract 2015; 109:279-86. [PMID: 26070217 DOI: 10.1016/j.diabres.2015.05.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 01/29/2015] [Accepted: 05/03/2015] [Indexed: 10/23/2022]
Abstract
AIM This prospective study aimed to identify and estimate the frequency of responders offered Continuous subcutaneous insulin infusion (CSII) from baseline data and during follow-up, and secondly to characterize CSII users with good adherence to pump therapy among 463 children and adolescents with Type 1 diabetes mellitus. METHODS A response was defined as lowering HbA1c with 1% or achieving an HbA1c<7.5% (58 mmol/mol). Good adherence was defined as measuring ≥7 self monitored blood glucoses (SMBGs) and taking ≥7 boluses daily. Logistic regression was used to estimate the effect of demographic and clinical variables prior to and during pump treatment. RESULTS At 24 months follow-up 32% qualified as responders. Stratifying for age at onset, 45% of the children aged <6 yrs qualified as responders vs. 32% and 28% of the youngsters and adolescents aged 6-12 yrs. and 12-19 yrs., respectively (p=0.02). Responders were characterized by their HbA1c-level at pump onset (p=0.001), taking more daily boluses (7.64 ± 3.33 vs. 6.40 ± 3.18 p=0.003) and measuring more SMBGs per day at follow-up (6.88 ± 2.35 vs. 6.31 ± 2.54 p=0.03). The incidence of severe hypoglycemia decreased from 14.3 to 3.3 events per 100 person years (p<0.0001). Twenty percent did not respond despite a good adherence toward CSII therapy. CONCLUSION Age <6 years, high or low HbA1c at pump initiation and number of daily boluses were associated with improved or sustained near-normal metabolic outcome. The incidence of severe hypoglycemia was significantly reduced. Twenty percent of the population had good adherence without any metabolic improvement.
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Affiliation(s)
| | - J Svensson
- The Pediatric Department at Copenhagen University Hospital, Herlev, Denmark; Faculty of Health and Medical Sciences, Copenhagen University, Copenhagen, Denmark
| | - B Olsen
- The Pediatric Department at Copenhagen University Hospital, Herlev, Denmark
| | - L Lyngsøe
- The Pediatric Department at Hillerød Hospital, Hillerød, Denmark
| | - J Thomsen
- The Pediatric Department at Kolding Hospital, Kolding, Denmark
| | - J Johannesen
- The Pediatric Department at Copenhagen University Hospital, Herlev, Denmark; Faculty of Health and Medical Sciences, Copenhagen University, Copenhagen, Denmark.
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Hasan B, Olsen B, Alam A, Akter L, Melhus Å. Dissemination of the multidrug-resistant extended-spectrum β-lactamase-producing Escherichia coli O25b-ST131 clone and the role of house crow (Corvus splendens) foraging on hospital waste in Bangladesh. Clin Microbiol Infect 2015; 21:1000.e1-4. [PMID: 26115863 DOI: 10.1016/j.cmi.2015.06.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 06/03/2015] [Accepted: 06/12/2015] [Indexed: 10/23/2022]
Abstract
Two hundred and thirty-eight faecal samples from crows foraging on hospital wastes were analysed for extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae. ESBL-producing crow isolates were characterized and compared with 31 patient isolates. Among the crows, 59% carried ESBL producers. These included Escherichia coli, Klebsiella pneumoniae, Raoultella terrigena and Enterobacter cloacae harbouring the genes for CTX-M-1, CTX-M-15, CTX-M-55, CTX-M-79, and CTX-M-14. Human isolates carried only the CTX-M-15 gene. Two-thirds of crow E. coli isolates and all human E. coli isolates were multidrug resistant. Crows and patients shared E. coli sequence types, including the epidemic E. coli O25b-ST131 clone. The scavenging behaviour of crows at poorly managed hospital waste dumps made them potential reservoirs of antibiotic resistance, including ESBLs.
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Affiliation(s)
- B Hasan
- Clinical Microbiology and Infectious Medicine, Department of Medical Sciences, Uppsala University, Uppsala, Sweden; Zoonosis Science Centre, Department of Medical Biochemistry and Microbiology, BMC, Uppsala University, Uppsala, Sweden.
| | - B Olsen
- Clinical Microbiology and Infectious Medicine, Department of Medical Sciences, Uppsala University, Uppsala, Sweden; Zoonosis Science Centre, Department of Medical Biochemistry and Microbiology, BMC, Uppsala University, Uppsala, Sweden
| | - A Alam
- Rajshahi Medical College Hospital, Rajshahi, Bangladesh
| | - L Akter
- Chittagong Medical College Hospital, Chittagong, Bangladesh
| | - Å Melhus
- Clinical Microbiology and Infectious Medicine, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
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Olsen B, Johannesen J, Fredheim S, Svensson J. Insulin pump treatment; increasing prevalence, and predictors for better metabolic outcome in Danish children and adolescents with type 1 diabetes. Pediatr Diabetes 2015; 16:256-62. [PMID: 25082292 DOI: 10.1111/pedi.12164] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 04/04/2014] [Accepted: 05/19/2014] [Indexed: 12/21/2022] Open
Abstract
AIMS Few studies have looked at nationwide data for insulin pump treatment. Since 1996 the Danish Childhood Diabetes Registry (DanDiabKids) has collected data on all Danish diabetic patients aged 0-15 yr. The purpose of this study is to evaluate the prevalence of continuous subcutaneous insulin infusion (CSII) use among Danish children with diabetes and to compare metabolic control in CSII-treated children and adolescents to those treated with MDI. MATERIALS AND METHODS The Registry collects on a yearly basis data on insulin regimen, central measured hemoglobin A1c (HbA1c), and demographic data on all patients. In the period 2005-2011, 2983 young patients (1721 males) with diabetes were followed in the Registry. Mean observation period was 5.11 yr [standard error (SE) 0.09]. In the total period 1846 patients were treated with MDI and 1493 changed from MDI to CSII. In 2005, less than 5% of children were treated with CSII whereas the percentage of children on CSII increased to approximately 50% in 2011. The patients were divided into age groups, <5 yr, 5-10 yr, and > 15 yr. RESULTS HbA1c was significantly higher in MDI-treated children, +5.29 (CI 95% 4.29; 6.29 mmol/mol). HbA1c in all age groups was significantly lower in CSII-treated patients, and longitudinally HbA1c continued to be lower in all age groups. In multivariate analysis, a low HbA1c at CSII start, centers with more than 100 pump patients, a more recent year of diabetes onset, a higher number of self-monitoring of blood glucose (SMBG) measurements, a higher number of daily boluses, and a higher percentage of bolus insulin were all related to a lower HbA1c. CONCLUSION The percentage of children on pumps (CSII) is CSII treatment is associated with a significantly lower Hba1c, achieved just after treatment initiation. In the following years there is a parallel rise in HbA1c in both MDI as well as in MDI treated patients. Patients coming from larger clinics, and patients measuring more blood glucose values and taking more boluses have a better metabolic control.
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Affiliation(s)
- B Olsen
- Department of Paediatrics, Herlev University Hospital, Herlev, Denmark
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Sletten IN, Hellund JC, Olsen B, Clementsen S, Kvernmo HD, Nordsletten L. Conservative treatment has comparable outcome with bouquet pinning of little finger metacarpal neck fractures: a multicentre randomized controlled study of 85 patients. J Hand Surg Eur Vol 2015; 40:76-83. [PMID: 25427553 DOI: 10.1177/1753193414560119] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Current literature gives few guidelines regarding indication for operative treatment of little finger metacarpal neck fractures, and some surgeons choose operative treatment when the palmar angulation exceeds 30°. The objective of this study was to determine whether conservative treatment produces comparable outcomes with bouquet pinning in a randomized, controlled trial. Eighty-five patients with little finger metacarpal neck fractures with ≥30° palmar angulation in the lateral view were included. Patients were randomized to two groups: conservative treatment without reduction of the fracture (43 patients); and closed reduction and bouquet pinning (42 patients). After 1 year, there were no statistical differences between the groups in QuickDASH score, pain, satisfaction, finger range of motion, grip strength, or quality of life. There was a trend versus better satisfaction with hand appearance (p = 0.06), but longer sick leave (p < 0.001) and more complications (p = 0.02) in the operative group.
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Affiliation(s)
- I N Sletten
- Department of Orthopaedic Surgery, Oslo University Hospital, Oslo, Norway
| | - J C Hellund
- Department of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway
| | - B Olsen
- Department of Orthopaedic Surgery, Oslo University Hospital, Oslo, Norway
| | - S Clementsen
- Department of Orthopaedic Surgery, Akershus University Hospital, Lørenskog, Norway
| | - H D Kvernmo
- Division of Neurosciences and Orthopaedics, University Hospital of North Norway, Tromsø, Norway Department of Clinical Medicine, University of Tromsø - Arctic University of Norway, Tromsø, Norway
| | - L Nordsletten
- Department of Orthopaedic Surgery, Oslo University Hospital, Oslo, Norway Faculty of Medicine, University of Oslo, Blindern, Norway
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Halle B, Thisgaard H, Aaberg-Jessen C, Olsen B, Dam J, Langkjaer N, Munthe S, Nagren K, Hoilund-Carlsen PF, Kristensen B. ET-22 * CONVECTION-ENHANCED DELIVERY OF THE AUGER-ELECTRON-EMITTER 125I-UdR: A HIGHLY EFFICIENT THERAPY IN AN ORTHOTOPIC GLIOBLASTOMA XENOGRAFT MODEL. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou255.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Hommel E, Olsen B, Battelino T, Conget I, Schütz-Fuhrmann I, Hoogma R, Schierloh U, Sulli N, Gough H, Castañeda J, de Portu S, Bolinder J. Impact of continuous glucose monitoring on quality of life, treatment satisfaction, and use of medical care resources: analyses from the SWITCH study. Acta Diabetol 2014; 51:845-51. [PMID: 25037251 PMCID: PMC4176956 DOI: 10.1007/s00592-014-0598-7] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 05/15/2014] [Indexed: 11/12/2022]
Abstract
To investigate the impact of continuous glucose monitoring (CGM) on health-related quality of life (HRQOL), treatment satisfaction (TS) medical resource use, and indirect costs in the SWITCH study. SWITCH was a multicentre, randomized, crossover study. Patients with type 1 diabetes (n = 153) using continuous subcutaneous insulin infusion (CSII) were randomized to a 12 month sensor-On/Off or sensor-Off/On sequence (6 months each treatment), with a 4-month washout between periods. HRQOL in children and TS in adults were measured using validated questionnaires. Medical resource utilization data were collected. In adults, TS was significantly higher in the sensor-On arm, and there were significant improvements in ratings for treatment convenience and flexibility. There were no clinically significant differences in children's HRQOL or parents' proxy ratings. The incidence of severe hypoglycaemia, unscheduled visits, or diabetes-related hospitalizations did not differ significantly between the two arms. Adult patients made fewer telephone consultations during the sensor-On arm; children's caregivers made similar numbers of telephone consultations during both arms, and calls were on average only 3 min longer during the sensor-On arm. Regarding indirect costs, children with >70 % sensor usage missed fewer school days, compared with the sensor-Off arm (P = 0.0046) but there was no significant difference in the adults days of work off. The addition of CGM to CSII resulted in better metabolic control without imposing an additional burden on the patient or increased medical resource use, and offered the potential for cost offsets.
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Affiliation(s)
- E. Hommel
- Steno Diabetes Center, Niels Steensensvej 2, 2820 Gentofte, Copenhagen, Denmark
| | - B. Olsen
- Herlev University Hospital, Copenhagen, Denmark
| | - T. Battelino
- University Children’s Hospital, University of Ljubljana, Ljubljana, Slovenia
| | - I. Conget
- Diabetes Unit, ICMDM Hospital Clínic i Universitari, Barcelona, Spain
| | | | - R. Hoogma
- Groene Hart Ziekenhuis, Gouda, The Netherlands
| | - U. Schierloh
- Centre Hospitalier de Luxembourg, Clinique Pediatrique, Luxembourg, Luxembourg
| | - N. Sulli
- Clinica Pediatrica, Servizio Diabetologia, Policlinico Umberto I, Rome, Italy
| | - H. Gough
- Medtronic International Trading Sarl, Tolochenaz, Switzerland
| | - J. Castañeda
- Medtronic Bakken Research Centre, Maastricht, The Netherlands
| | - S. de Portu
- Medtronic International Trading Sarl, Tolochenaz, Switzerland
| | - J. Bolinder
- Department of Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
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Rehn M, Ringberg H, Runehagen A, Herrmann B, Olsen B, Petersson AC, Hjertqvist M, Kühlmann-Berenzon S, Wallensten A. Unusual increase of psittacosis in southern Sweden linked to wild bird exposure, January to April 2013. Euro Surveill 2013. [DOI: 10.2807/ese.18.19.20478-en] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Binary file ES_Abstracts_Final_ECDC.txt matches
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Affiliation(s)
- M Rehn
- European Programme for Intervention Epidemiology Training (EPIET), European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
- Swedish Institute for Communicable Disease Control, Solna, Sweden
| | - H Ringberg
- Department of Communicable Disease Control, Skåne county, Malmö, Sweden
| | - A Runehagen
- Department of Communicable Disease Control, Kronoberg county, Växjö, Sweden
| | - B Herrmann
- Department of Medical Sciences, Clinical Bacteriology, Uppsala University, Uppsala, Sweden
| | - B Olsen
- Department of Medical Sciences, Infectious Diseases, Uppsala University, Uppsala, Sweden
| | - A C Petersson
- Clinical Microbiology, University and regional Laboratory, Lund, Sweden
| | - M Hjertqvist
- Swedish Institute for Communicable Disease Control, Solna, Sweden
| | | | - A Wallensten
- Swedish Institute for Communicable Disease Control, Solna, Sweden
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Rehn M, Ringberg H, Runehagen A, Herrmann B, Olsen B, Petersson AC, Hjertqvist M, Kühlmann-Berenzon S, Wallensten A. Unusual increase of psittacosis in southern Sweden linked to wild bird exposure, January to April 2013. Euro Surveill 2013; 18:20478. [PMID: 23725809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
Abstract
Free-living wild birds worldwide act as reservoir for Chlamydia psittaci, but the risk of transmission to humans through contact with wild birds has not been widely documented. From 12 January to April 9 2013, a total of 25 cases of psittacosis were detected in southern Sweden, about a threefold increase compared with the mean of the previous 10 years. A matched case-control study investigating both domestic and wild bird exposure showed that cases were more likely than controls to have cleaned wild bird feeders or been exposed to wild bird droppings in other ways (OR: 10.1; 95% CI: 2.1-47.9). We recommend precautionary measures such as wetting bird feeders before cleaning them, to reduce the risk of transmission of C. psittaci when in contact with bird droppings. Furthermore, C. psittaci should be considered for inclusion in laboratory diagnostic routines when analysing samples from patients with atypical pneumonia, since our findings suggest that psittacosis is underdiagnosed.
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Affiliation(s)
- M Rehn
- Swedish Institute for Communicable Disease Control, Solna, Sweden.
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Fredheim S, Johannesen J, Johansen A, Lyngsøe L, Rida H, Andersen MLM, Lauridsen MH, Hertz B, Birkebæk NH, Olsen B, Mortensen HB, Svensson J. Diabetic ketoacidosis at the onset of type 1 diabetes is associated with future HbA1c levels. Diabetologia 2013; 56:995-1003. [PMID: 23389397 DOI: 10.1007/s00125-013-2850-z] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 01/21/2013] [Indexed: 10/27/2022]
Abstract
AIMS/HYPOTHESIS We investigated the long-term impact of diabetic ketoacidosis (DKA) at onset on metabolic regulation and residual beta cell function in a Danish population with type 1 diabetes. METHODS The study is based on data from DanDiabKids, a Danish national diabetes register for children. The register provides clinical and biochemical data on patients with type 1 diabetes diagnosed in 1996-2009 and then followed-up until 1 January 2012. Repeated-measurement models were used as statistical methods. RESULTS The study population comprised 2,964 children <18 years. The prevalence of DKA at diagnosis was 17.9%. Of the total subjects, 8.3% had mild, 7.9% had moderate and 1.7% had severe DKA. DKA (moderate and severe) was associated with increased HbA1c (%) levels (0.24; 95% CI 0.11, 0.36; p = 0.0003) and increased insulin dose-adjusted HbA1c (IDAA1c, 0.51; 95% CI 0.31, 0.70; p < 0.0001) during follow-up, after adjustment for covariates. Children without a family history of diabetes were more likely to present with DKA (19.2% vs 8.8%, p < 0.0001); however, these children had a lower HbA1c (%) level over time (-0.35; 95% CI -0.46, -0.24; p < 0.0001). Continuous subcutaneous insulin infusion (CSII) was associated with a long-term reduction in HbA1c, changing the effect of DKA, after adjustment for covariates (p < 0.0001). CONCLUSIONS/INTERPRETATION DKA at diagnosis was associated with poor long-term metabolic regulation and residual beta cell function as assessed by HbA1c and IDAA1c, respectively; however, CSII treatment was associated with improvement in glycaemic regulation and residual beta cell function, changing the effect of DKA at onset in our population.
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Affiliation(s)
- S Fredheim
- Department of Paediatrics, Herlev Hospital, Arkaden, Turkisvej 14, DK 2730 Herlev, Denmark.
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Battelino T, Conget I, Olsen B, Schütz-Fuhrmann I, Hommel E, Hoogma R, Schierloh U, Sulli N, Bolinder J. The use and efficacy of continuous glucose monitoring in type 1 diabetes treated with insulin pump therapy: a randomised controlled trial. Diabetologia 2012; 55:3155-62. [PMID: 22965294 PMCID: PMC3483098 DOI: 10.1007/s00125-012-2708-9] [Citation(s) in RCA: 331] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Accepted: 07/31/2012] [Indexed: 01/22/2023]
Abstract
AIMS/HYPOTHESIS The aim of this multicentre, randomised, controlled crossover study was to determine the efficacy of adding continuous glucose monitoring (CGM) to insulin pump therapy (CSII) in type 1 diabetes. METHODS Children and adults (n = 153) on CSII with HbA(1c) 7.5-9.5% (58.5-80.3 mmol/mol) were randomised to (CGM) a Sensor On or Sensor Off arm for 6 months. After 4 months' washout, participants crossed over to the other arm for 6 months. Paediatric and adult participants were separately electronically randomised through the case report form according to a predefined randomisation sequence in eight secondary and tertiary centres. The primary outcome was the difference in HbA(1c) levels between arms after 6 months. RESULTS Seventy-seven participants were randomised to the On/Off sequence and 76 to the Off/On sequence; all were included in the primary analysis. The mean difference in HbA(1c) was -0.43% (-4.74 mmol/mol) in favour of the Sensor On arm (8.04% [64.34 mmol/mol] vs 8.47% [69.08 mmol/mol]; 95% CI -0.32%, -0.55% [-3.50, -6.01 mmol/mol]; p < 0.001). Following cessation of glucose sensing, HbA(1c) reverted to baseline levels. Less time was spent with sensor glucose <3.9 mmol/l during the Sensor On arm than in the Sensor Off arm (19 vs 31 min/day; p = 0.009). The mean number of daily boluses increased in the Sensor On arm (6.8 ± 2.5 vs 5.8 ± 1.9, p < 0.0001), together with the frequency of use of the temporary basal rate (0.75 ± 1.11 vs 0.26 ± 0.47, p < 0.0001) and manual insulin suspend (0.91 ± 1.25 vs 0.70 ± 0.75, p < 0.018) functions. Four vs two events of severe hypoglycaemia occurred in the Sensor On and Sensor Off arm, respectively (p = 0.40). CONCLUSIONS/INTERPRETATION Continuous glucose monitoring was associated with decreased HbA(1c) levels and time spent in hypoglycaemia in individuals with type 1 diabetes using CSII. More frequent self-adjustments of insulin therapy may have contributed to these effects.
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Affiliation(s)
- T Battelino
- UMC-University Children's Hospital, Faculty of Medicine, University of Ljubljana, Bohoričeva 20, Ljubljana, Slovenia.
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Hansbro PM, Warner S, Tracey JP, Arzey KE, Selleck P, O'Riley K, Beckett EL, Bunn C, Kirkland PD, Vijaykrishna D, Olsen B, Hurt AC. Surveillance and analysis of avian influenza viruses, Australia. Emerg Infect Dis 2011; 16:1896-904. [PMID: 21122219 PMCID: PMC3294589 DOI: 10.3201/eid1612.100776] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
We investigated carriage of avian influenza viruses by wild birds in Australia, 2005-2008, to assess the risks to poultry industries and human health. We collected 21,858 (7,357 cloacal, 14,501 fecal) samples and detected 300 viruses, representing a detection rate of ≈1.4%. Rates were highest in autumn (March-May) and differed substantially between bird types, areas, and years. We typed 107 avian influenza viruses and identified 19 H5, 8 H7, and 16 H9 (40% of typed viruses). All were of low pathogenicity. These viruses formed clearly different phylogenetic clades to lineages from Eurasia or North America, suggesting the potential existence of Australian lineages. H7 viruses were similar to highly pathogenic H7 strains that caused outbreaks in poultry in Australia. Several periods of increased detection rates (numbers or subtypes of viruses) were identified. This study demonstrates the need for ongoing surveillance to detect emerging pathogenic strains and facilitate prevention of outbreaks.
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Affiliation(s)
- Philip M Hansbro
- The University of Newcastle, Newcastle, New South Wales, Australia.
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Bonnedahl J, Drobni P, Johansson A, Hernandez J, Melhus A, Stedt J, Olsen B, Drobni M. Characterization, and comparison, of human clinical and black-headed gull (Larus ridibundus) extended-spectrum -lactamase-producing bacterial isolates from Kalmar, on the southeast coast of Sweden. J Antimicrob Chemother 2010; 65:1939-44. [DOI: 10.1093/jac/dkq222] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Jaenson TGT, Eisen L, Comstedt P, Mejlon HA, Lindgren E, Bergström S, Olsen B. Risk indicators for the tick Ixodes ricinus and Borrelia burgdorferi sensu lato in Sweden. Med Vet Entomol 2009; 23:226-37. [PMID: 19712153 DOI: 10.1111/j.1365-2915.2009.00813.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The distributional area of the tick Ixodes ricinus (L.), the primary European vector to humans of Lyme borreliosis spirochaetes (Borrelia burgdorferi sensu lato) and tick-borne encephalitis virus, appears to be increasing in Sweden. It is therefore important to determine which environmental factors are most useful to assess risk of human exposure to this tick and its associated pathogens. The geographical distribution of I. ricinus in Sweden was analysed with respect to vegetation zones and climate. The northern limit of I. ricinus and B. burgdorferi s.l. in Sweden corresponds roughly to the northern limit of the southern boreal vegetation zone, and is characterized climatically by snow cover for a mean duration of 150 days and a vegetation period averaging 170 days. The zoogeographical distribution of I. ricinus in Sweden can be classified as southerly-central, with the centre of the distribution south of the Limes Norrlandicus. Ixodes ricinus nymphs from 13 localities in different parts of Sweden were examined for the presence of B. burgdorferi s.l. and found to be infected with Borrelia afzelii and Borrelia garinii. Tick sampling localities were characterized on the basis of the density of Borrelia-infected I. ricinus nymphs, presence of specific mammals, dominant vegetation and climate. Densities of I. ricinus nymphs and Borrelia-infected nymphs were significantly correlated, and nymphal density can thus serve as a general indicator of risk for exposure to Lyme borreliosis spirochaetes. Analysis of data from this and other studies suggests that high densities of Borrelia-infected nymphs typically occur in coastal, broadleaf vegetation and in mixed deciduous/spruce vegetation in southern Sweden. Ixodes ricinus populations consistently infected with B. burgdorferi s.l. can occur in: (a) biotopes with shrews, rodents, hares and birds; (b) biotopes with shrews, rodents, hares, deer and birds, and (c) island locations where the varying hare (Lepus timidus) is the only mammalian tick host.
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Affiliation(s)
- T G T Jaenson
- Department of Systematic Biology, Medical Entomology Unit, Evolutionary Biology Centre, Uppsala University, Uppsala, Sweden.
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