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Pervin S, Islam MS, Tada N, Tsutsui T, Rahman MM, Yabuki A, Tacharina MR, Rakib TM, Maki S, Yamato O. Screening and Carrier Rate of Neuronal Ceroid Lipofuscinosis in Chihuahua Dogs in Japan. Animals (Basel) 2022; 12:1210. [PMID: 35565635 PMCID: PMC9106037 DOI: 10.3390/ani12091210] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/27/2022] [Accepted: 05/04/2022] [Indexed: 02/01/2023] Open
Abstract
Neuronal ceroid lipofuscinosis (NCL) is a group of rare lethal neurodegenerative lysosomal storage diseases that occur in a range of dog breeds, including Chihuahuas. Recently, a homozygous single base-pair deletion (c.846delT), which causes a frame shift generating a premature stop codon (p.Phe282Leufs13*) in the canine CLN7/MFSD8 gene, has been identified as a causative mutation for NCL in Chihuahuas. The objective of this study was to determine the frequency of the mutant allele and/or carrier rate of NCL in Chihuahuas in Japan using a newly designed real-time PCR assay. Samples of saliva were randomly collected from 1007 Chihuahua puppies during physical examinations prior to the transportation to pet shops. Screening results revealed a carrier rate of 1.29%, indicating a mutant allele frequency (0.00645) that is considered sufficiently high to warrant measures for the control and prevention of this lethal disease. The genotyping assay designed in this study could make a valuable contribution to the control and prevention of NCL.
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Affiliation(s)
- Shahnaj Pervin
- Laboratory of Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; (S.P.); (M.S.I.); (N.T.); (M.M.R.); (A.Y.); (M.R.T.); (T.M.R.); (S.M.)
| | - Md Shafiqul Islam
- Laboratory of Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; (S.P.); (M.S.I.); (N.T.); (M.M.R.); (A.Y.); (M.R.T.); (T.M.R.); (S.M.)
- Department of Pathology and Parasitology, Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Khulshi, Chattogram 4225, Bangladesh
| | - Naomi Tada
- Laboratory of Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; (S.P.); (M.S.I.); (N.T.); (M.M.R.); (A.Y.); (M.R.T.); (T.M.R.); (S.M.)
- Japan Institute of Small Animal Reproduction (Bio Art), 3-16-9 Uchikanda, Chiyoda-ku, Tokyo 101-0047, Japan;
| | - Toshihiko Tsutsui
- Japan Institute of Small Animal Reproduction (Bio Art), 3-16-9 Uchikanda, Chiyoda-ku, Tokyo 101-0047, Japan;
| | - Mohammad Mahbubur Rahman
- Laboratory of Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; (S.P.); (M.S.I.); (N.T.); (M.M.R.); (A.Y.); (M.R.T.); (T.M.R.); (S.M.)
- Department of Pathology and Parasitology, Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Khulshi, Chattogram 4225, Bangladesh
| | - Akira Yabuki
- Laboratory of Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; (S.P.); (M.S.I.); (N.T.); (M.M.R.); (A.Y.); (M.R.T.); (T.M.R.); (S.M.)
| | - Martia Rani Tacharina
- Laboratory of Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; (S.P.); (M.S.I.); (N.T.); (M.M.R.); (A.Y.); (M.R.T.); (T.M.R.); (S.M.)
- Faculty of Veterinary Medicine, Airlangga University, Campus C, Jl. Mulyorejo, Surabaya 60115, Indonesia
| | - Tofazzal Md Rakib
- Laboratory of Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; (S.P.); (M.S.I.); (N.T.); (M.M.R.); (A.Y.); (M.R.T.); (T.M.R.); (S.M.)
- Department of Pathology and Parasitology, Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Khulshi, Chattogram 4225, Bangladesh
| | - Shinichiro Maki
- Laboratory of Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; (S.P.); (M.S.I.); (N.T.); (M.M.R.); (A.Y.); (M.R.T.); (T.M.R.); (S.M.)
| | - Osamu Yamato
- Laboratory of Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; (S.P.); (M.S.I.); (N.T.); (M.M.R.); (A.Y.); (M.R.T.); (T.M.R.); (S.M.)
- Faculty of Veterinary Medicine, Airlangga University, Campus C, Jl. Mulyorejo, Surabaya 60115, Indonesia
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Tamura S, Tamura Y, Nakamoto Y, Hasegawa D, Tsuboi M, Uchida K, Yabuki A, Yamato O. Positioning Head Tilt in Canine Lysosomal Storage Disease: A Retrospective Observational Descriptive Study. Front Vet Sci 2022; 8:802668. [PMID: 34970622 PMCID: PMC8712568 DOI: 10.3389/fvets.2021.802668] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 11/25/2021] [Indexed: 11/13/2022] Open
Abstract
Positioning head tilt is a neurological sign that has recently been described in dogs with congenital cerebellar malformations. This head tilt is triggered in response to head movement and is believed to be caused by a lack of inhibition of the vestibular nuclei by the cerebellar nodulus and ventral uvula (NU), as originally reported cases were dogs with NU hypoplasia. We hypothesized that other diseases, such as lysosomal storage diseases that cause degeneration in the whole brain, including NU, may cause NU dysfunction and positioning head tilt. Videos of the clinical signs of canine lysosomal storage disease were retrospectively evaluated. In addition, post-mortem NU specimens from each dog were histopathologically evaluated. Nine dogs were included, five with lysosomal storage disease, two Chihuahuas with neuronal ceroid lipofuscinosis (NCL), two Border Collies with NCL, one Shikoku Inu with NCL, two Toy Poodles with GM2 gangliosidosis, and two Shiba Inus with GM1 gangliosidosis. Twenty-eight videos recorded the clinical signs of the dogs. In these videos, positioning head tilt was observed in seven of nine dogs, two Chihuahuas with NCL, one Border Collie with NCL, one Shikoku Inu with NCL, one Toy Poodle with GM2 gangliosidosis, and two Shiba Inus with GM1 gangliosidosis. Neuronal degeneration and loss of NU were histopathologically confirmed in all diseases. As positioning head tilt had not been described until 2016, it may have been overlooked and may be a common clinical sign and pathophysiology in dogs with NU dysfunction.
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Affiliation(s)
| | | | - Yuya Nakamoto
- Neuro Vets Animal Neurology Clinic, Kyoto, Japan.,Veterinary Surgery, Graduate School of Life and Environmental Science, Osaka Prefecture University, Sakai, Japan
| | - Daisuke Hasegawa
- Laboratory of Veterinary Radiology, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Masaya Tsuboi
- Laboratory of Veterinary Pathology, Graduate School of Agriculture and Life Science, University of Tokyo, Tokyo, Japan
| | - Kazuyuki Uchida
- Laboratory of Veterinary Pathology, Graduate School of Agriculture and Life Science, University of Tokyo, Tokyo, Japan
| | - Akira Yabuki
- Laboratory of Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
| | - Osamu Yamato
- Laboratory of Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
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