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Trumpp KM, Mayer J, Roman CE, Kent M. Hearing Assessment of Free-Ranging Owls and Implications for Wildlife Rehabilitation: 31 Cases (2014-2023). J Avian Med Surg 2024; 38:75-82. [PMID: 38980816 DOI: 10.1647/avianms-d-23-00043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
Owls, members of the avian order Strigiformes, are nocturnal birds of prey that are found worldwide except for Antarctica. Traumatized, free-ranging owls are commonly presented to veterinary hospitals and wildlife rehabilitation facilities with the goal of providing medical care and rehabilitation to enable release back into their natural habitat. Minimal guidelines exist for the release of wildlife, and whereas a need for functional vision is described in raptors, assessing and evaluating hearing is usually not mentioned. This can be problematic for nocturnal predators because hearing is the primary sense utilized by owls when hunting and navigating in their dark environment. The brainstem auditory evoked response (BAER) test is a minimally invasive, objective assessment of hearing commonly used in companion animals. To the authors' knowledge, routine or standardized BAER evaluation has not been reported in traumatized, free-ranging owls. In the following retrospective study, 31 free-ranging owls presented to the University of Georgia Veterinary Teaching Hospital for known or suspected trauma or being found in a debilitated state underwent BAER testing to assess for the presence of complete sensorineural hearing loss. Similar to assessment of hearing in companion animals, the BAER test was elicited using a broad click stimulus delivered at 85 dB nHL. In all owls, qualitative assessment and peak latency measurements of the BAER test reflected hearing ability. This study highlights the importance of hearing in nocturnal raptors, how BAER testing can aid in decision making regarding rehabilitation, and provides a foundation for further investigation of hearing loss in traumatized owls. We suggest that veterinarians working with free-ranging owls in a rehabilitation setting should consider BAER testing as part of routine diagnostic testing.
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Affiliation(s)
- Kelsey M Trumpp
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, GA 30602, USA,
| | - Joerg Mayer
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, GA 30602, USA
| | | | - Marc Kent
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, GA 30602, USA
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Stanger A, Buhmann G, Dörfelt S, Zablotski Y, Fischer A. Rapid hearing threshold assessment with modified auditory brainstem response protocols in dogs. Front Vet Sci 2024; 11:1358410. [PMID: 38511189 PMCID: PMC10951061 DOI: 10.3389/fvets.2024.1358410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 02/26/2024] [Indexed: 03/22/2024] Open
Abstract
Introduction Auditory brainstem response (ABR) is the gold standard for hearing testing in dogs. ABR is commonly used in puppies to diagnose congenital sensorineural deafness. Long test times limit the use for a more comprehensive hearing screening in veterinary practice. This study aimed to establish a super-fast hearing screening protocol in dogs. Methods Hearing thresholds were routinely measured with a mobile device designed for newborn hearing screening in 90 dogs. We introduced modifications of the ABR protocol, e. g., a binaural test mode, higher stimulus rates, a broadband chirp stimulus, and an algorithm for automatic peak V detection in a stepwise fashion. Hearing thresholds were then measured with fast protocols utilizing either 30 Hz click or 90 Hz broadband chirp stimuli with 80, 60, 40, 30, 20, 10, 0 and -10 dBnHL stimulation intensities. Interrater reliability, agreement between click and chirp hearing thresholds and correlations with clinical characteristics of the dogs were assessed. Results Using all innovations, the test time for hearing threshold assessment in both ears was reduced to 1.11 min (mean). The chirp stimulus accentuated both, peak V and the subsequent trough, which are essential features for judgement of the hearing threshold, but preceding peaks were less conspicuous. Interrater reliability and agreement between click and chirp hearing threshold was excellent. Dogs >10 years of age and dogs with abnormal hearing score or otitis score had significantly higher hearing thresholds than younger dogs (p ≤ 0.001) or dogs without abnormalities (p < 0.001). Conclusion The results demonstrate that modifications in ABR protocols speed-up test times significantly while the quality of the recordings for hearing threshold assessment is maintained. Modified ABR protocols enable super-fast hearing threshold assessment in veterinary practice.
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Affiliation(s)
| | | | | | | | - Andrea Fischer
- Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
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3
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Guérineau C, Broseghini A, Lõoke M, Dehesh G, Mongillo P, Marinelli L. Determining Hearing Thresholds in Dogs Using the Staircase Method. Vet Sci 2024; 11:67. [PMID: 38393085 PMCID: PMC10892234 DOI: 10.3390/vetsci11020067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/13/2023] [Accepted: 01/29/2024] [Indexed: 02/25/2024] Open
Abstract
There is a growing interest in performing playback experiments to understand which acoustical cues trigger specific behavioral/emotional responses in dogs. However, very limited studies have focused their attention on more basic aspects of hearing such as sensitivity, i.e., the identification of minimal intensity thresholds across different frequencies. Most previous studies relied on electrophysiological methods for audiograms for dogs, but these methods are considered less accurate than assessments based on behavioral responses. To our knowledge, only one study has established hearing thresholds using a behavioral assessment on four dogs but using a method that did not allow potential improvement throughout the sessions. In the present study, we devised an assessment procedure based on a staircase method. Implying the adaptation of the assessed intensity on the dogs' performance, this approach grants several assessments around the actual hearing threshold of the animal, thereby increasing the reliability of the result. We used such a method to determine hearing thresholds at three frequencies (0.5, 4.0, and 20.0 kHz). Five dogs were tested in each frequency. The hearing thresholds were found to be 19.5 ± 2.8 dB SPL at 0.5 kHz, 14.0 ± 4.5 dB SPL at 4.0 kHz, and 8.5 ± 12.8 dB SPL at 20.0 kHz. No improvement in performance was visible across the procedure. While the thresholds at 0.5 and 4.0 kHz were in line with the previous literature, the threshold at 20 kHz was remarkably lower than expected. Dogs' ability to produce vocalization beyond 20 kHz, potentially used in short-range communication, and the selective pressure linked to intraspecific communication in social canids are discussed as potential explanations for the sensitivity to higher frequencies.
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Affiliation(s)
- Cécile Guérineau
- Dipartimento di Biomedicina Comparata e Alimentazione, University of Padova, Viale dell’Università 16, 35020 Legnaro, Italy; (C.G.); (A.B.); (M.L.); (L.M.)
| | - Anna Broseghini
- Dipartimento di Biomedicina Comparata e Alimentazione, University of Padova, Viale dell’Università 16, 35020 Legnaro, Italy; (C.G.); (A.B.); (M.L.); (L.M.)
| | - Miina Lõoke
- Dipartimento di Biomedicina Comparata e Alimentazione, University of Padova, Viale dell’Università 16, 35020 Legnaro, Italy; (C.G.); (A.B.); (M.L.); (L.M.)
| | - Giulio Dehesh
- Independent Researcher, Via Chiesanuova 139, 35136 Padova, Italy;
| | - Paolo Mongillo
- Dipartimento di Biomedicina Comparata e Alimentazione, University of Padova, Viale dell’Università 16, 35020 Legnaro, Italy; (C.G.); (A.B.); (M.L.); (L.M.)
| | - Lieta Marinelli
- Dipartimento di Biomedicina Comparata e Alimentazione, University of Padova, Viale dell’Università 16, 35020 Legnaro, Italy; (C.G.); (A.B.); (M.L.); (L.M.)
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M. Skip Scheifele P, Marshall D, Lee S, Reid P, McCreery T, Byrne D. Canine Hearing Management. Vet Med Sci 2022. [DOI: 10.5772/intechopen.105515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The United States military employs multipurpose canines as force multipliers. A newly developed baseline audiology program applicable to noise effects on the hearing threshold for these dogs has just been developed by the University of Cincinnati FETCHLAB using brainstem auditory evoked potentials to detect estimated threshold shifts in this population. Dogs that are routinely deployed are subject to consistent exposure to noise in the field. Few investigations have focused on the effects of transport noise on the auditory system in multipurpose dogs. The consequence of these dogs having a significant hearing threshold shift is a failure of the dog to properly respond to voice commands and to miss critical acoustic cues while on target. This chapter specifically discusses the baseline protocol for audiological testing of special operations’ multipurpose canines related to helicopter transport.
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Teubenbacher U, Doss GA, Guevar J. Brainstem auditory-evoked response in healthy African pygmy hedgehogs (Atelerix albiventris). J Small Anim Pract 2020; 62:49-54. [PMID: 33260270 DOI: 10.1111/jsap.13264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/28/2020] [Accepted: 10/26/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To evaluate and describe brainstem auditory-evoked response measurements in healthy African pygmy hedgehogs (Atelerix albiventris). MATERIALS AND METHODS Brainstem auditory-evoked response measurements were performed in 12 adult African pygmy hedgehogs (seven males, five females) under general anaesthesia. Waveform morphology was assessed and wave latencies, amplitudes and interpeak latencies calculated. RESULTS Brainstem auditory-evoked response measurements were successfully performed in both ears from all hedgehogs. Three distinct waves were reproducible in all patients in both ears using a stimulus with an intensity of 90 dB nHL (decibel above normal hearing level). Amplitudes of waves I and V, latencies of waves I, II-III and V and interpeak latencies of waves I-V were calculated at 90 dB for both ears of each animal. CLINICAL SIGNIFICANCE This study describes normal brainstem auditory-evoked response morphology and latencies for African pygmy hedgehogs. General anaesthesia is required to perform this neurodiagnostic, given the unique behaviour and anatomy of hedgehogs. This baseline data may be useful for investigating hearing abnormalities and central nervous system disorders in hedgehogs.
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Affiliation(s)
- U Teubenbacher
- Division of Clinical Radiology (Teubenbacher), Vetsuisse Faculty Bern, University of Bern, Länggassstrasse 128, 3012 Bern, Switzerland
| | - G A Doss
- Departments of Surgical (Doss) and Medical (Guevar) Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, 2015 Linden Drive, Madison, Wisconsin, 53706, USA
| | - J Guevar
- Departments of Surgical (Doss) and Medical (Guevar) Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, 2015 Linden Drive, Madison, Wisconsin, 53706, USA.,Division of Clinical Neurology, Vetsuisse Faculty, University of Bern, Länggassstrasse 128, 3012 Bern, Switzerland
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Anderson NC, Thomovsky SA, Lucas JR, Kushiro-Banker T, Radcliffe JS, Stewart KR, Lay DC. Auditory brainstem responses in weaning pigs and three ages of sows. Transl Anim Sci 2019; 3:1416-1422. [PMID: 32704906 PMCID: PMC7200588 DOI: 10.1093/tas/txz123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Indexed: 11/16/2022] Open
Abstract
Piglet crushing is a devastating welfare concern on swine farms; however, some sows appear unresponsive to a piglet’s call. Sow hearing ability is rarely considered despite the extensive body of research performed on crushing. In this study, pigs of four age groups (weaning, n = 7; gilts, n = 5; 2nd and 3rd parity, n = 5; 5th parity and up, n = 5) were anesthetized and auditory brainstem responses (ABRs) were performed to measure if pig hearing diminishes with age in a mechanically ventilated barn. Before testing, pigs were placed in a sound dampening box. ABRs were performed on animals using 1,000 clicks at two decibel (dB) levels: 90 and 127 dB sound pressure level. Latencies and amplitudes of waves I–V were measured and interpeak latencies for waves I–III, III–V, and I–V were calculated. Five pigs (three 2nd and 3rd parity, and two 5th parity and above) had no detectable waves at either decibel. Sows in 2nd and 3rd parities had very few distinguishable waves, with only wave I and II present in two sows. Amplitudes of waves I and V increased with increased dB (P < 0.001). Increasing dB decreased the latency of each of the recorded waves (P < 0.01). The vast majority of commercial swine are raised in noisy barn environments; it is possible that these environments directly affect the ability for pigs to hear and normal hearing development in this population of animals. Hearing has a significant effect on swine welfare as hearing is integral to successful animal handing and during moments of animal-to-animal communication. Hearing is a considerable welfare issue on farms and ways to decrease pig hearing loss should be considered.
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Affiliation(s)
| | | | - Jeffrey R Lucas
- Department of Biology, Purdue University, West Lafayette, IN
| | | | | | - Kara R Stewart
- Department of Animal Sciences, Purdue University, West Lafayette, IN
| | - Donald C Lay
- Livestock Behavior Research Unit, Agricultural Research Service, United States Department of Agriculture, West Lafayette, IN
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Kasabalis D, Chatzis MK, Apostolidis K, Xenoulis PG, Buono A, Petanides T, Leontides LS, Polizopoulou ZS, Steiner JM, Suchodolski JS, Saridomichelakis MN. Evaluation of nephrotoxicity and ototoxicity of aminosidine (paromomycin)-allopurinol combination in dogs with leishmaniosis due to Leishmania infantum: A randomized, blinded, controlled study. Exp Parasitol 2019; 206:107768. [PMID: 31539540 DOI: 10.1016/j.exppara.2019.107768] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 08/30/2019] [Accepted: 09/16/2019] [Indexed: 12/13/2022]
Abstract
Canine leishmaniosis due to Leishmania infantum is a widespread zoonotic disease. Although aminosidine can be an effective treatment, current therapeutic recommendations do not advocate its use, mainly due to concerns regarding the potential nephrotoxicity and ototoxicity of this drug. The aim of this randomized, blinded, controlled study was to evaluate the nephrotoxicity and ototoxicity of aminosidine-allopurinol combination and compare it with that of meglumine antimonate-allopurinol combination in non-azotemic dogs with leishmaniosis. Forty dogs with leishmaniosis were randomly assigned to be treated with either aminosidine at 15 mg/kg, subcutaneously, once daily for 28 days (group A) or with meglumine antimonate at 100 mg/kg, subcutaneously, once daily for 28 days (group B). In addition to either drug, dogs in both groups were administered allopurinol at 10 mg/kg per os twice daily for 2 months. Kidney function was evaluated through measurement of serum creatinine, urea nitrogen, inorganic phosphorus, and cystatin-c concentrations and complete urinalysis, including protein-to-creatinine ratio, at baseline and after 14, 28, and 60 days from the beginning of the treatment. At the same time points, vestibular and auditory functions were evaluated through neurological examination and brainstem auditory evoked response (BAER) recordings of wave I, wave V, inter-wave I-V latencies, and minimum hearing thresholds. None of the dogs developed clinicopathological evidence of kidney disease during the study. Serum creatinine concentration increased >0.3 mg/dl over baseline in 2 dogs in group A and in 5 dogs in group B. Parameters of kidney function were not significantly different or were improved compared to baseline and the only difference between the two groups was the lower concentration of serum creatinine in group A. None of the dogs developed peripheral vestibular syndrome or hearing impairment. At the end of the study, parameters of auditory function were not significantly different or were improved compared to baseline and there were no differences between the two groups. The results of this study show that the nephrotoxicity and ototoxicity of aminosidine, when administered to non-azotemic dogs with leishmaniosis at 15 mg/kg subcutaneously once daily for 28 days along with allopurinol, is minimal and does not differ from that of meglumine antimonate.
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Affiliation(s)
- D Kasabalis
- Clinic of Medicine, Faculty of Veterinary Science, University of Thessaly, Trikalon Str. 224, GR-43132, Karditsa, Greece; Veterinary Clinic St. Modestos, Aerodromiou Str. 59A, GR-57013, Thessaloniki, Greece
| | - M K Chatzis
- Clinic of Medicine, Faculty of Veterinary Science, University of Thessaly, Trikalon Str. 224, GR-43132, Karditsa, Greece
| | - K Apostolidis
- Clinic of Medicine, Faculty of Veterinary Science, University of Thessaly, Trikalon Str. 224, GR-43132, Karditsa, Greece
| | - P G Xenoulis
- Clinic of Medicine, Faculty of Veterinary Science, University of Thessaly, Trikalon Str. 224, GR-43132, Karditsa, Greece
| | - A Buono
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, College Station, TX, 77843-4474, USA
| | - T Petanides
- Clinic of Medicine, Faculty of Veterinary Science, University of Thessaly, Trikalon Str. 224, GR-43132, Karditsa, Greece
| | - L S Leontides
- Laboratory of Epidemiology, Biostatistics and Animal Health Economics, Faculty of Veterinary Science, University of Thessaly, Trikalon Str. 224, GR-43132, Karditsa, Greece
| | - Z S Polizopoulou
- Diagnostic Laboratory, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, St. Voutira Str. 11, GR-54627, Thessaloniki, Greece
| | - J M Steiner
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, College Station, TX, 77843-4474, USA
| | - J S Suchodolski
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, College Station, TX, 77843-4474, USA
| | - M N Saridomichelakis
- Clinic of Medicine, Faculty of Veterinary Science, University of Thessaly, Trikalon Str. 224, GR-43132, Karditsa, Greece.
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Mari L, Freeman J, Van Dijk J, De Risio L. Prevalence of congenital sensorineural deafness in a population of client-owned purebred kittens in the United Kingdom. J Vet Intern Med 2019; 33:1707-1713. [PMID: 31144374 PMCID: PMC6639530 DOI: 10.1111/jvim.15515] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 05/01/2019] [Indexed: 01/08/2023] Open
Abstract
Background Data about congenital sensorineural deafness (CSD) in white blue‐eyed cats derive mainly from research colonies, and information about client‐owned cats is limited. Objectives To describe the prevalence of CSD in a client‐owned population of white purebred kittens and colored littermates in the United Kingdom. Animals One hundred thirty‐two solid white client‐owned purebred kittens and 61 colored littermates, 6 to 21 weeks of age. Methods Retrospective (56 cases) and prospective (137 cases) study. Hearing was assessed by brainstem auditory evoked response testing, and the entire litter was tested. Results Congenital sensorineural deafness was diagnosed only in solid white kittens, with a prevalence of 30.3% (15.9% bilateral, 14.4% unilateral). The prevalence of CSD was significantly higher in white kittens with 1 (44.4%) or 2 (50%) blue irises than in those without blue irises (22.2%). Kittens with at least 1 blue iris were 3.2 times more likely to have CSD than kittens without blue irises. In solid white kittens, CSD was diagnosed in 7 of 15 (46.7%) Turkish Vankedisi, 8 of 18 (44.0%) Maine Coon, 18 of 41 (43.9%) Norwegian Forest, 3 of 11 (27.3%) British Shorthair, 2 of 12 (16.7%) Devon Rex, 2 of 12 (8.3%) Persian, 1 of 21 (4.8%) Russian, and 0 of 2 Sphinx. The prevalence of CSD was significantly different in Norwegian Forest, Maine Coon, and Turkish Vankedisi kittens compared with Persian or Russian kittens. Conclusion and Clinical Importance We identified a high prevalence of CSD in a population of client‐owned purebred white kittens in the United Kingdom and suggest differences in breed‐specific prevalence of CSD.
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Affiliation(s)
- Lorenzo Mari
- Neurology/Neurosurgery Service, Center for Small Animal Studies, Animal Health Trust, Newmarket, United Kingdom
| | - Julia Freeman
- Neurology/Neurosurgery Service, Center for Small Animal Studies, Animal Health Trust, Newmarket, United Kingdom
| | - Jan Van Dijk
- Centre for Preventive Medicine, Animal Health Trust, Newmarket, United Kingdom
| | - Luisa De Risio
- Neurology/Neurosurgery Service, Center for Small Animal Studies, Animal Health Trust, Newmarket, United Kingdom
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González-Blanco P, Cediel-Algovia R, Blanco-Murcia J, Re M. Brainstem auditory evoked potentials (BAEP) in dairy calves. Livest Sci 2019. [DOI: 10.1016/j.livsci.2019.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Cole LK, Rajala-Schultz PJ, Lorch G. Conductive hearing loss in four dogs associated with the use of ointment-based otic medications. Vet Dermatol 2018; 29:341. [PMID: 29664150 DOI: 10.1111/vde.12542] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/19/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND Hearing loss (HL) is classified as conductive when sound transmission is compromised in the ear canal or middle ear, or sensorineural when there is an abnormality of the receptor cells of the cochlea or auditory pathway. Hearing in dogs is evaluated using the brainstem auditory evoked response (BAER) test. HYPOTHESIS/OBJECTIVES Our objective was to characterize BAER findings pre- and post-ear flushing in four dogs with acute HL following application of an ointment-based otic medication containing betamethasone, clotrimazole and gentamicin in a mineral oil-based system containing a plasticized hydrocarbon gel. ANIMALS Dogs, ranging from 9 to 11 years old, that had been treated with the otic medication for one to three weeks prior to hearing loss and on otoscopic examination had evidence of medication in the horizontal ear canals. METHODS Dogs were anaesthetized for an ear flush to remove the medication from the ear canals. Hearing was assessed using BAER testing, measurements were initiated with 116 decibel peak equivalent sound pressure level (dBpeSPL) click. Estimated threshold was defined as the lowest intensity in dB in which wave V was still present. RESULTS Post-ear flush the estimated threshold improved in both ears of all dogs (mean 22.3 dB; range 13-41 dB), confirming conductive HL due to the otic medication. All owners noted an improvement in their dog's hearing post-ear flush, validating the BAER findings. CONCLUSIONS AND CLINICAL IMPORTANCE These results emphasize the importance of an ear flush to remove otic medications in dogs that experience acute HL, to determine if the HL is conductive, and if so, to restore hearing.
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Affiliation(s)
- Lynette K Cole
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, 1900 Coffey Rd, Columbus, OH, 43210, USA
| | - Päivi J Rajala-Schultz
- Department of Production Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Paroninkuja 20, 04920, Saarentaus, Finland
| | - Gwendolen Lorch
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, 1900 Coffey Rd, Columbus, OH, 43210, USA
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Comparison of the brainstem auditory evoked responses during sevoflurane or alfaxalone anaesthesia in adult cats. Vet Anaesth Analg 2017; 44:1085-1090. [DOI: 10.1016/j.vaa.2016.11.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 09/02/2016] [Accepted: 11/03/2016] [Indexed: 11/23/2022]
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Mayousse V, Desquilbet L, Jeandel A, Blot S. Prevalence of neurological disorders in French bulldog: a retrospective study of 343 cases (2002-2016). BMC Vet Res 2017; 13:212. [PMID: 28676057 PMCID: PMC5497356 DOI: 10.1186/s12917-017-1132-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 06/26/2017] [Indexed: 12/18/2022] Open
Abstract
Background French Bulldog (FB) has significantly gained in popularity over the last few years, and seems to be frequently affected by various neurological conditions. The purpose of this retrospective study was to report the prevalences of neurological diseases in a large population of FB, presented with neurological signs between 2002 and 2016, and for which a definitive diagnosis was established. A secondary objective was to identify epidemiological characteristics regarding specific diseases in this singular breed. Results During the study period, 533 FBs were presented for neurological signs, representing 18.7% of all admitted FBs (N = 2846). In total, 343 FBs with definitive diagnosis were included in this descriptive epidemiological study. Hansen type I intervertebral disk herniation (IVDH) was by far the most common neurological disorder (45.5% of all cases). The IVDH location was cervical in 39.8%, and thoracolumbar in 60.2% of cases. The median ages for cervical and thoracolumbar IVDH were 4.2 and 4 years, respectively. C3-C4 was the most commonly affected disk (57.8% of cervical IDVH) all locations combined. Spinal arachnoid diverticulum (SAD) was detected in 25 FBs, representing the second most common myelopathy (11.3%). A concurrent spinal abnormality was identified in 64.0% of SAD cases. Brain tumours represented 36.8% of encephalopathies, with glioma (confirmed or suspected) being the most common. Meningoencephalitis of unknown origin (MUO) represented 25.0% of brain disorders, females less than 5.5 years being more likely to be affected. Aside from central nervous system conditions, otitis interna associated with peripheral vestibular signs and bilateral congenital deafness (associated with white coat) were also common. Conclusions The findings of this study suggest that FB seems to be prone to several neurological diseases. IVDH is clearly predominant in FB and cervical location seems more represented than in other breeds. FBs affected by IVDH tend to be younger than previously described, either for both cervical and thoracolumbar locations. Thoracic SAD was the second most common myelopathy, with a concurrent spinal anomaly identified in two thirds of the cases. MUO was more likely to affect young to middle-aged females. These findings could be of interest for owners, breeders, practicing veterinarians and insurance companies.
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Affiliation(s)
- Vincent Mayousse
- Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort (EnvA), Unité de Neurologie, 7 avenue du général de Gaulle, 94700, Maisons-Alfort, France. .,Inserm, IMRB U955-E10, 8 rue du général Sarrail, 94000, Créteil, France. .,UMR BNMS Neurobiologie, Ecole Nationale Veterinaire d'Alfort, 7 avenue du General de Gaulle, 94700, Maisons Alfort, France.
| | - Loïc Desquilbet
- Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort (EnvA), Unité de Biostatistiques et d'Epidémiologie Clinique, 7 avenue du général de Gaulle, 94700, Maisons-Alfort, France
| | - Aurélien Jeandel
- Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort (EnvA), Unité de Neurologie, 7 avenue du général de Gaulle, 94700, Maisons-Alfort, France.,Present adress: Davies Veterinary Specialists, Manor Farm Buisiness Park, Higham Gobion, Herts, SG5 3HR, United Kingdom
| | - Stéphane Blot
- Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort (EnvA), Unité de Neurologie, 7 avenue du général de Gaulle, 94700, Maisons-Alfort, France.,Inserm, IMRB U955-E10, 8 rue du général Sarrail, 94000, Créteil, France.,UMR BNMS Neurobiologie, Ecole Nationale Veterinaire d'Alfort, 7 avenue du General de Gaulle, 94700, Maisons Alfort, France
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Scheifele PM, Sonstrom KE, Dunham AE, Overall KL. Is noise reactivity reflected in auditory response variables, including those that measure cognition, in dogs? Initial findings. J Vet Behav 2016. [DOI: 10.1016/j.jveb.2016.09.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bach JP, Lüpke M, Dziallas P, Wefstaedt P, Uppenkamp S, Seifert H, Nolte I. Auditory functional magnetic resonance imaging in dogs--normalization and group analysis and the processing of pitch in the canine auditory pathways. BMC Vet Res 2016; 12:32. [PMID: 26897016 PMCID: PMC4761139 DOI: 10.1186/s12917-016-0660-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 12/04/2015] [Indexed: 11/10/2022] Open
Abstract
Background Functional magnetic resonance imaging (fMRI) is an advanced and frequently used technique for studying brain functions in humans and increasingly so in animals. A key element of analyzing fMRI data is group analysis, for which valid spatial normalization is a prerequisite. In the current study we applied normalization and group analysis to a dataset from an auditory functional MRI experiment in anesthetized beagles. The stimulation paradigm used in the experiment was composed of simple Gaussian noise and regular interval sounds (RIS), which included a periodicity pitch as an additional sound feature. The results from the performed group analysis were compared with those from single animal analysis. In addition to this, the data were examined for brain regions showing an increased activation associated with the perception of pitch. Results With the group analysis, significant activations matching the position of the right superior olivary nucleus, lateral lemniscus and internal capsule were identified, which could not be detected in the single animal analysis. In addition, a large cluster of activated voxels in the auditory cortex was found. The contrast of the RIS condition (including pitch) with Gaussian noise (no pitch) showed a significant effect in a region matching the location of the left medial geniculate nucleus. Conclusion By using group analysis additional activated areas along the canine auditory pathways could be identified in comparison to single animal analysis. It was possible to demonstrate a pitch-specific effect, indicating that group analysis is a suitable method for improving the results of auditory fMRI studies in dogs and extending our knowledge of canine neuroanatomy.
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Affiliation(s)
- Jan-Peter Bach
- Klinik für Kleintiere, Stiftung Tierärztliche Hochschule Hannover, Bünteweg 9, 30559, Hannover, Germany.
| | - Matthias Lüpke
- Fachgebiet für Allgemeine Radiologie und Medizinische Physik, Stiftung Tierärztliche Hochschule Hannover, Bischofsholer Damm 15, 30173, Hannover, Germany.
| | - Peter Dziallas
- Klinik für Kleintiere, Stiftung Tierärztliche Hochschule Hannover, Bünteweg 9, 30559, Hannover, Germany.
| | - Patrick Wefstaedt
- Klinik für Kleintiere, Stiftung Tierärztliche Hochschule Hannover, Bünteweg 9, 30559, Hannover, Germany.
| | - Stefan Uppenkamp
- Medizinische Physik, Universität Oldenburg, 26111, Oldenburg, Germany.
| | - Hermann Seifert
- Fachgebiet für Allgemeine Radiologie und Medizinische Physik, Stiftung Tierärztliche Hochschule Hannover, Bischofsholer Damm 15, 30173, Hannover, Germany.
| | - Ingo Nolte
- Klinik für Kleintiere, Stiftung Tierärztliche Hochschule Hannover, Bünteweg 9, 30559, Hannover, Germany.
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Kluth S, Distl O. Congenital sensorineural deafness in dalmatian dogs associated with quantitative trait loci. PLoS One 2013; 8:e80642. [PMID: 24324618 PMCID: PMC3851758 DOI: 10.1371/journal.pone.0080642] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Accepted: 10/14/2013] [Indexed: 12/13/2022] Open
Abstract
A genome-wide association study (GWAS) was performed for 235 Dalmatian dogs using the canine Illumina high density bead chip to identify quantitative trait loci (QTL) associated with canine congenital sensorineural deafness (CCSD). Data analysis was performed for all Dalmatian dogs and in addition, separately for brown-eyed and blue-eyed dogs because of the significant influence of eye colour on CCSD in Dalmatian dogs. Mixed linear model analysis (MLM) revealed seven QTL with experiment-wide significant associations (-log10P>5.0) for CCSD in all Dalmatian dogs. Six QTL with experiment-wide significant associations for CCSD were found in brown-eyed Dalmatian dogs and in blue-eyed Dalmatian dogs, four experiment-wide significant QTL were detected. The experiment-wide CCSD-associated SNPs explained 82% of the phenotypic variance of CCSD. Five CCSD-loci on dog chromosomes (CFA) 6, 14, 27, 29 and 31 were in close vicinity of genes shown as causative for hearing loss in human and/or mouse.
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Affiliation(s)
- Susanne Kluth
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Ottmar Distl
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
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