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Sonego DA, Ribeiro AP, Dower NMB, Rodrigues BE, de França Lemes SA, de Oliveira Souza A, de Lara Spada EC, Furlan FH, Lisboa DR, Rondon E Silva J. Effects of topical ketorolac tromethamine on tear parameters, meibography, goblet cell density, and conjunctival oxidative stress in healthy dogs. Vet Ophthalmol 2024; 27:214-227. [PMID: 38140703 DOI: 10.1111/vop.13177] [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] [Received: 05/08/2023] [Revised: 11/28/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023]
Abstract
OBJECTIVES The objective of the study was to evaluate whether a twice-daily instillation of 0.45% preservative-free ketorolac tromethamine (FKT) or 0.4% benzalkonium chloride-preserved ketorolac tromethamine (BACKT), every 12 h for 30 days may affect tear film parameters and the meibography in healthy dogs. Additionally, we assessed whether the same treatments irritated the ocular surface, affected goblet cell density (GCD), and the levels of oxidative stress biomarkers (OSB) in the conjunctiva of the same dogs. PROCEDURES Experimental and masked comparison study. In 11 healthy dogs baseline values of the lipid layer thickness, tear meniscus height, non-invasive tear breakup time (NI-TFBT), and the meibomian gland (MG) loss were assessed by OSAvet®. For each dog, one eye received 40 μL of BACKT, while the other received 40 μL FKT, every 12 h for 30 consecutive days. Tear parameters and meibography were repeated 15, 30, and 60 days post-treatments. Conjunctival hyperemia and blepharospasm were monitored at the same time points. At baseline and Day 30, a conjunctival biopsy was collected for GCD and OSB determination. RESULTS Conjunctival hyperemia and blepharospasm were not observed. At Day 15, the MG loss increased only in FKT-treated eyes (p < .001). On Day 30, both treatment groups showed increased MG loss, shortened NI-TFBT, and reduced GCD and catalase (p < .05). At Day 30, BACKT-treated eyes showed lower levels of superoxide dismutase (SOD) (p = .006) and higher levels of malondialdehyde (MDA) (p = .02). Differences between treatments were not observed for any parameter at any time point (p > .05). 60 days after treatment, OSAvet® parameters tended to return to values assessed at baseline; however, significant differences remained for MG loss (p < .05). CONCLUSIONS Twice-daily instillation of KT, containing or not BAC, for 30 consecutive days shortened NI-TFBT, decreased GCD, and increased the MG loss in healthy dogs. KT should be used with caution when prescribed for long periods, particularly in patients with tear film abnormalities. However, future controlled studies using KT, BAC, and other topical NSAIDs are indicated to further support this finding.
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Affiliation(s)
- Dábila Araújo Sonego
- Faculdade de Medicina Veterinária, Universidade Federal de Mato Grosso, Cuiabá, Brazil
| | | | | | - Bianca Eidt Rodrigues
- Faculdade de Medicina Veterinária, Universidade Federal de Mato Grosso, Cuiabá, Brazil
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Ruhina Rahman SN, Goswami A, Jala A, Venuganti A, Deka A, Borkar RM, Singh V, Das D, Shunmugaperumal T. Studies on cationic ocular emulsions containing bipartitioned oil droplets to codeliver cyclosporin A and etodolac. Nanomedicine (Lond) 2024; 19:1035-1050. [PMID: 38686958 PMCID: PMC11221375 DOI: 10.2217/nnm-2023-0364] [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] [Received: 12/21/2023] [Accepted: 03/11/2024] [Indexed: 05/02/2024] Open
Abstract
Background: To prepare ocular emulsions containing bipartitioned oil droplets to entrap cyclosporin A (0.05% w/w) and etodolac (0.2% w/w) by using castor, olive and silicon oils. Methods: The physicochemical characterizations of prepared emulsions were performed. The drug's biodistribution profiles and pharmacokinetic parameters from emulsions were checked using the ultraperformance liquid chromatography-tandem mass spectrometry method in the ocular tissues of the healthy rabbit eye model. Results: The emulsions displayed 365.13 ± 7.21 nm size and 26.45 ± 2.09 mV zeta potential. The ferrying of two drugs after releasing from emulsions occurred across corneal/conjunctival tissues to enter the vitreous and sclera following a single drop administration into the rabbit's eyes. Conclusion: The dual drug-loaded emulsions were more likely to produce synergistic anti-inflammatory activity for managing moderate-to-severe dry eye disease.
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Affiliation(s)
- Syed Nazrin Ruhina Rahman
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, Assam, 781101, India
- Suria Eye Products Pvt. Ltd, BIO-NEST Incubation Centre, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, Assam, 781101, India
| | - Abhinab Goswami
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, Assam, 781101, India
| | - Aishwarya Jala
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, Assam, 781101, India
| | - Animith Venuganti
- Center for Ocular Regeneration, LV Prasad Eye Institute, Hyderabad, 500034, India
| | - Apurba Deka
- Department of Ocular Pathology, Sri Sankaradeva Nethralaya, Guwahati, Assam, 781028, India
| | - Roshan M Borkar
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, Assam, 781101, India
| | - Vivek Singh
- Center for Ocular Regeneration, LV Prasad Eye Institute, Hyderabad, 500034, India
| | - Dipankar Das
- Department of Ocular Pathology, Sri Sankaradeva Nethralaya, Guwahati, Assam, 781028, India
| | - Tamilvanan Shunmugaperumal
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, Assam, 781101, India
- Suria Eye Products Pvt. Ltd, BIO-NEST Incubation Centre, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, Assam, 781101, India
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OTAKA Y, KANAI K, TOMATSU A, SANGU R, OKADA D, NAGAI N, YAMASHITA Y, ICHIKAWA Y, SAKAI A, TAJIMA K. Oral 5-aminolevulinic acid combined with sodium ferrous citrate prevents blood-aqueous barrier breakdown after anterior chamber paracentesis in healthy beagle dogs. J Vet Med Sci 2023; 85:1257-1260. [PMID: 37880141 PMCID: PMC10788171 DOI: 10.1292/jvms.23-0347] [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] [Received: 08/13/2023] [Accepted: 10/07/2023] [Indexed: 10/27/2023] Open
Abstract
This study investigated the preventive effect of 5-aminolevulinic acid combined with sodium ferrous citrate (5-ALA/SFC) on blood-aqueous barrier (BAB) breakdown induced after anterior chamber paracentesis (ACP) in beagles. 5-ALA/SFC (1/0.64 mg/kg or 3/1.92 mg/kg) or carprofen (4.0 mg/kg) was orally administered daily for 7 days prior to ACP. Then, a sample of the aqueous humor (AH) was collected from one eye via ACP (first sample) and again 60 min later (second sample). The protein and prostaglandin E2 (PGE2) concentrations in both samples were measured. Compared with the control group, high-dose 5-ALA/SFC and carprofen significantly reduced the AH protein and PGE2 concentrations in the second sample. Our findings suggest that 5-ALA/SFC suppresses BAB breakdown in dogs.
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Affiliation(s)
- Yuya OTAKA
- Department of Small Animal Internal Medicine II, School of
Veterinary Medicine, Kitasato University, Aomori, Japan
| | - Kazutaka KANAI
- Department of Small Animal Internal Medicine II, School of
Veterinary Medicine, Kitasato University, Aomori, Japan
| | - Aoi TOMATSU
- Department of Small Animal Internal Medicine II, School of
Veterinary Medicine, Kitasato University, Aomori, Japan
| | - Riyo SANGU
- Department of Small Animal Internal Medicine II, School of
Veterinary Medicine, Kitasato University, Aomori, Japan
| | - Daiki OKADA
- Department of Small Animal Internal Medicine II, School of
Veterinary Medicine, Kitasato University, Aomori, Japan
| | - Noriaki NAGAI
- Faculty of Pharmacy, Kindai University, Osaka, Japan
| | - Yohei YAMASHITA
- Department of Small Animal Internal Medicine II, School of
Veterinary Medicine, Kitasato University, Aomori, Japan
| | - Yoichiro ICHIKAWA
- Department of Small Animal Internal Medicine II, School of
Veterinary Medicine, Kitasato University, Aomori, Japan
| | - Aki SAKAI
- One Health Business Department, Companion Animal Group
Neopharma Japan Co., Ltd., Tokyo, Japan
| | - Kazuki TAJIMA
- Department of Small Animal Internal Medicine II, School of
Veterinary Medicine, Kitasato University, Aomori, Japan
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Rahman SNR, Goswami A, Sree A, Jala A, Borkar RM, Shunmugaperumal T. Dual Delivery of Cyclosporin A and Etodolac Using Polymeric Nanocapsules in a Rabbit Eye Model: Ocular Biodistribution and Pharmacokinetic Study. J Ocul Pharmacol Ther 2022; 38:734-744. [PMID: 36355052 DOI: 10.1089/jop.2022.0092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Purpose: Commercially available eye drops are loaded only with a single drug. By using the polymeric nanocapsules, dual delivery of 0.05% w/w cyclosporin A (CsA) and 0.2% w/w etodolac (Edc) was achieved. An ultraperformance liquid chromatography/tandem mass spectrometry (UPLC-MS/MS) method was developed for determining simultaneously the biodistribution and pharmacokinetic profile of CsA and Edc in ocular tissues. Methods: After one single drop instillation of nanocapsules into healthy right eyes of rabbits, the eyeballs were enucleated at 5, 15, 30, 60, and 90 min time periods to separate the 5 different ocular tissues. A liquid/liquid extraction method was used for ocular sample extraction using darunavir as internal standard. Using 3 diverse conditions such as bench-top, autosampler, and freeze-thaw, the stability of the analytes at 3 quality control samples in ocular tissues was also checked. Results: Intra- and interday precisions for both CsA and Edc in multiple ocular tissues were <10.32%, and the accuracy was <11.98%. The % bias and % RSD values for CsA and Edc were found within the acceptable limit of ±15%. The highest Cmax values were attained in cornea for both the drugs at 60 min postinstillation time point. Despite molecular size and structural differences, both CsA and Edc after liberation from nanocapsule drops can permeate into the tissues of the anterior as well as posterior segments of the eye. Conclusion: The biodistribution and pharmacokinetic data might help and strengthen our understanding of synergetic anti-inflammatory activity of CsA and Edc from nanocapsules after its ocular topical application for managing keratoconjunctivitis sicca.
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Affiliation(s)
- Syed Nazrin Ruhina Rahman
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, India
| | - Abhinab Goswami
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, India
| | - Amoolya Sree
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, India
| | - Aishwarya Jala
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, India
| | - Roshan M Borkar
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, India
| | - Tamilvanan Shunmugaperumal
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, India
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Jost HE, Keenan AV, Keys DA, Myrna KE, Diehl KA. Effect of topical non-steroidal anti-inflammatory drugs on healing times and complications in dogs with spontaneous chronic corneal epithelial defects. Vet Rec 2021; 190:e1118. [PMID: 34802145 DOI: 10.1002/vetr.1118] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 09/06/2021] [Accepted: 10/17/2021] [Indexed: 11/12/2022]
Abstract
BACKGROUND Little is published regarding topical NSAID effect on corneal healing in dogs. This retrospective cohort study aimed to compare healing times and complications in dogs with spontaneous chronic corneal epithelial defects (SCCED) treated with and without topical non-steroidal anti-inflammatory drugs (NSAID). METHODS Medical records of 66 dogs (71 eyes) diagnosed with SCCED between 2008 and 2019 were included. Eyes were divided into: (1) those receiving topical NSAIDs (n = 33) versus (2) those not receiving topical NSAID (n = 38). Follow-up until healed, such as comfortable eye, negative fluorescein stain was required. Use of topical or systemic anti-inflammatories outside of NSAID or presence of ocular disorders or systemic endocrinopathies that may contribute to delayed healing resulted in study exclusion. RESULTS Healing times were significantly longer in eyes that received topical NSAID (p = 0.008), however, the use of more topical medications for treatment was also associated with longer healing times (p = 0.001). The majority of eyes in the NSAID group received multiple medications, compared to the non-NSAID group, so it was not possible to separate the effects of NSAID from a number of medications. Complications occurred in three eyes of three dogs within the NSAID group. CONCLUSIONS In these canine SCCED eyes, the use of more topical medications, including NSAID, was associated with significantly delayed healing time.
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Affiliation(s)
- Haley E Jost
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - Alessandra V Keenan
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - Deborah A Keys
- Kaleidoscope Statistics, LLC, Keys Veterinary Medical Statistical Consulting, Athens, Georgia, USA
| | - Kathern E Myrna
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - Kathryn A Diehl
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
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Roberts JK, Meekins JM, Roush JK, Rankin AJ. Effects of topical instillation of 0.1% diclofenac sodium, 0.5% ketorolac tromethamine, and 0.03% flurbiprofen sodium on corneal sensitivity in ophthalmologically normal cats. Am J Vet Res 2020; 82:81-87. [PMID: 33369491 DOI: 10.2460/ajvr.82.1.81] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To investigate the effects of short-term and prolonged topical instillation of 0.1% diclofenac sodium, 0.5% ketorolac tromethamine, and 0.03% flurbiprofen sodium on corneal sensitivity (CS) in ophthalmologically normal cats. ANIMALS 12 healthy adult domestic shorthair cats. PROCEDURES In the first of 2 study phases, each cat received 0.1% diclofenac sodium, 0.5% ketorolac tromethamine, 0.03% flurbiprofen sodium, and saline (0.9% NaCl; control) solutions (1 drop [0.05 mL]/eye, q 5 min for 5 treatments) in a randomized order with a 2-day washout period between treatments. For each cat, an esthesiometer was used to measure CS before treatment initiation (baseline) and at 15, 30, 45, and 60 minutes after the last dose. There was a 2-day washout period between phases. The second phase was similar to the first, except each treatment was administered at a dosage of 1 drop/eye, twice daily for 5 days and CS was measured before treatment initiation and at 15 minutes and 24 and 48 hours after the last dose. The Friedman test was used to evaluate change in CS over time. RESULTS None of the 4 treatments had a significant effect on CS over time in either study phase. CONCLUSIONS AND CLINICAL RELEVANCE Results indicated that neither short-term nor prolonged topical instillation of 3 NSAID ophthalmic solutions had any effect on the CS of healthy cats. Given potential differences in cyclooxygenase expression between healthy and diseased eyes, further investigation of the effects of topical NSAID instillation in the eyes of cats with ocular surface inflammation is warranted.
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Martabano BB, Henriksen MDL, Colussi JA, Sharp JL, Wang Z, Lappin MR. Effect of topical administration of 0.1% diclofenac sodium ophthalmic solution at four frequencies on intraocular pressure in healthy Beagles. Am J Vet Res 2020; 81:41-46. [PMID: 31887086 DOI: 10.2460/ajvr.81.1.41] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate effects of topical ophthalmic administration of diclofenac on intraocular pressure (IOP) when applied at 4 frequencies to eyes of Beagles. ANIMALS 8 ophthalmologically normal Beagles. PROCEDURES The study involved four 5-day experimental periods each separated by a 16-day washout period. During each period, 1 drop of 0.1% diclofenac sodium ophthalmic solution was administered to the right eye at 4 treatment frequencies (1, 2, 3, or 4 times/d); 1 drop of eyewash was administered to the left eye as a control treatment. A complete ophthalmic examination was performed on days 0 (day before first treatment) and 5 of each experimental period. Gonioscopy was performed on day 0 of the first period. The IOPs were measured at 7 am and 7 pm on days 1 through 5. RESULTS No abnormalities were detected during neuro-ophthalmic and ophthalmic examinations on day 0 of each experimental period. No adverse reactions to administration of diclofenac or eyewash were observed at any time point. No abnormalities were detected during ophthalmic examinations performed on day 5, and IOPs remained < 25 mm Hg in all 4 periods. No significant differences were identified between the treated and control eyes or among the 4 treatment frequencies. CONCLUSIONS AND CLINICAL RELEVANCE Topical ophthalmic administration of diclofenac up to 4 times/d in dogs with no ophthalmic abnormalities did not significantly increase the IOP. Additional research is needed to evaluate the effect of topical ophthalmic administration of diclofenac on IOP in dogs with anterior uveitis.
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Pereira F, Santos B, Carboni T, Bender M, Driemeier D, Cunha A, Biajoli M, Mello F, Silva P, Pigatto J, Mello J. Systemic absortion and adverse effects of topical ocular use of ketorolac tromethamine and sodium diclofenac in New Zealand rabbits for 90 days. ARQ BRAS MED VET ZOO 2019. [DOI: 10.1590/1678-4162-10219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ABSTRACT The effect of the systemic absorption of 0.1% diclofenac sodium (DS) eyedrop was compared to that of 0.5% ketorolac tromethamine (KT) in female New Zealand white rabbits treated on both eyes three times a day for 90 days. The rabbits were divided in three groups of six animals (n= 18): KT group, DS group, and control (Co) group, in which saline (0.9% NaCl) solution was instilled. Water and food consumption were measured daily, clinical examination was performed weekly, and blood samples were collected every 30 days for laboratory examination. The plasma was analyzed for the presence of KT and DS by solid-phase extraction (SPE) associated with mass spectrometry (MS). Systemic absorption of these drugs was confirmed by SPE-MS, allowing their separation and identification in the plasma. At the end of the treatment, the animals were euthanized and necropsied, and no macroscopic or microscopic changes were found. This observation confirmed the laboratory results, which were within normal reference standards for the species. According to the results obtained, it can be concluded that treatment with eyedrops containing KT and DS for 90 days in healthy rabbits does not cause adverse systemic effects.
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Affiliation(s)
- F.Q. Pereira
- Universidade Federal do Rio Grande do Sul, Brazil
| | - B. Santos
- Universidade Federal do Rio Grande do Sul, Brazil
| | - T. Carboni
- Universidade Federal do Rio Grande do Sul, Brazil
| | - M. Bender
- Universidade Federal do Paraná, Brazil
| | - D. Driemeier
- Universidade Federal do Rio Grande do Sul, Brazil
| | - A.C.B. Cunha
- Universidade Federal de Ciências da Saúde de Porto Alegre, Brazil
| | - M.G. Biajoli
- Universidade Federal de Ciências da Saúde de Porto Alegre, Brazil
| | - F.B. Mello
- Universidade Federal de Ciências da Saúde de Porto Alegre, Brazil
| | - P.R. Silva
- Universidade Federal de Ciências da Saúde de Porto Alegre, Brazil
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Sato K, Kanai K, Ozaki M, Kagawa T, Kita M, Yamashita Y, Nagai N, Tajima K. Preventive effects of tyrosol, a natural phenolic compound, on anterior uveitis induced by anterior chamber paracentesis in healthy beagle dogs. J Vet Med Sci 2019; 81:573-576. [PMID: 30799325 PMCID: PMC6483907 DOI: 10.1292/jvms.18-0723] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
We investigated the effects of tyrosol (Tyr) on anterior chamber paracentesis
(ACP)–induced anterior uveitis in beagle dogs, as determined by protein and prostaglandin
E2 (PGE2) concentrations in the aqueous humor (AH). Tyr at a dose of 100 or 200 mg/kg or
2.2 mg/kg of carprofen as a positive control was administered orally twice daily from 2.5
days before paracentesis. The initial ACP was performed in one eye of individual dogs and
0.5 ml AH was aspirated. The secondary AH was collected 60 min later.
Pretreatment with 200 mg/kg of Tyr and carprofen significantly decreased aqueous protein
and PGE2 concentrations compared to the control group. Overall, these findings suggested
that Tyr was useful for the management of canine anterior uveitis.
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Affiliation(s)
- Kazuaki Sato
- Department of Small Animal Internal Medicine II, School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan
| | - Kazutaka Kanai
- Department of Small Animal Internal Medicine II, School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan
| | - Maiko Ozaki
- Department of Small Animal Internal Medicine II, School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan
| | - Takaaki Kagawa
- Department of Small Animal Internal Medicine II, School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan
| | - Mizuki Kita
- Department of Small Animal Internal Medicine II, School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan
| | - Yohei Yamashita
- Department of Small Animal Internal Medicine II, School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan
| | - Noriaki Nagai
- Faculty of Pharmacy, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Kazuki Tajima
- Department of Small Animal Internal Medicine II, School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan
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Spatola R, Nadelstein B, Berdoulay A, English RV. The effects of topical aqueous sirolimus on tear production in normal dogs and dogs with refractory dry eye. Vet Ophthalmol 2017; 21:255-263. [DOI: 10.1111/vop.12503] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Cantarella RDA, de Oliveira JK, Dorbandt DM, Montiani-Ferreira F. Effects of topical flurbiprofen sodium, diclofenac sodium, ketorolac tromethamine and benzalkonium chloride on corneal sensitivity in normal dogs. Open Vet J 2017; 7:254-260. [PMID: 28884078 PMCID: PMC5579566 DOI: 10.4314/ovj.v7i3.9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Accepted: 08/01/2017] [Indexed: 12/02/2022] Open
Abstract
To evaluate corneal sensitivity by using the Cochet-Bonnet® esthesiometer in normal canine eyes at different time points following instillation of three different topical non-steroidal anti-inflammatory drugs (flurbiprofen sodium 0.03%, diclofenac sodium 0.1% and ketorolac tromethamine 0.5%) and benzalkonium chloride 0.01%. Six healthy mixed breed dogs from the same litter were used in two different stages. First, one drop of flurbiprofen sodium 0.03% and diclofenac sodium 0.1% in each eye; second, one drop of ketorolac tromethamine 0.5% and benzalkonium chloride 0.01% in each eye. Baseline esthesiometry was obtained before eye drop application and every 15 minutes thereafter until a total of 105 minutes of evaluation time. A one-week interval was allowed between the two treatment phases. Statistical analysis was used to compare means according to time of evaluation and drug used. Diclofenac sodium 0.1% decreased corneal sensitivity at 75 and 90 minutes (P > 0.015) with possible interference on neuronal nociceptive activity and analgesic effect while ketorolac tromethamine 0.5% did not show any variation for esthesiometry means along the evaluation. Flurbiprofen sodium 0.03% resulted in increased esthesiometry values 30 minutes after instillation (P > 0.013), increasing corneal sensitivity and possibly producing a greater irritant corneal effect over its analgesic properties. Benzalkonium chloride 0.01% significantly increased corneal sensitivity at 15 minutes of evaluation (P > 0.001), most likely resulting from its irritating effect. Esthesiometry did not allow a definite conclusion over the analgesic effect of the NSAIDs tested; however it was effective in detecting fluctuations in corneal sensitivity.
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Affiliation(s)
- Raquel de Araújo Cantarella
- Universidade Federal do Paraná (UFPR), Departamento de Medicina Veterinária, Rua dos Funcionários, 1540, Bairro Juvevê, 80035-050, Curitiba - PR, Brazil
| | - Juliana Kravetz de Oliveira
- Universidade Federal do Paraná (UFPR), Departamento de Medicina Veterinária, Rua dos Funcionários, 1540, Bairro Juvevê, 80035-050, Curitiba - PR, Brazil
| | - Daniel M Dorbandt
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, 1008, West Hazelwood Drive, Urbana, Illinois 61802, USA.,Central Hospital for Veterinary Medicine, North Haven, Connecticut 06473, USA
| | - Fabiano Montiani-Ferreira
- Universidade Federal do Paraná (UFPR), Departamento de Medicina Veterinária, Rua dos Funcionários, 1540, Bairro Juvevê, 80035-050, Curitiba - PR, Brazil
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13
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Davis AM, Riggs CM, Chow DWY. The use of porcine urinary bladder matrix (
UBM
) to repair a perforated corneal ulcer with iris prolapse in a horse. EQUINE VET EDUC 2017. [DOI: 10.1111/eve.12779] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- A. M. Davis
- Veterinary Clinical Services The Hong Kong Jockey Club Sha TinHong Kong
| | - C. M. Riggs
- Veterinary Clinical Services The Hong Kong Jockey Club Sha TinHong Kong
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14
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Dimethyl sulfoxide but not indomethacin is efficient for healing in hydrofluoric acid eye burns. Burns 2017; 43:232-244. [DOI: 10.1016/j.burns.2016.09.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 09/22/2016] [Accepted: 09/23/2016] [Indexed: 11/18/2022]
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Aranda ML, Fleitas MFG, Dieguez H, Iaquinandi A, Sande PH, Dorfman D, Rosenstein RE. Melatonin as a Therapeutic Resource for Inflammatory Visual Diseases. Curr Neuropharmacol 2017; 15:951-962. [PMID: 28088912 PMCID: PMC5652015 DOI: 10.2174/1570159x15666170113122120] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 12/15/2016] [Accepted: 01/06/2017] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Uveitis and optic neuritis are prevalent ocular inflammatory diseases, and highly damaging ocular conditions. Both diseases are currently treated with corticosteroids, but they do not have adequate efficacy and are often associated with severe side effects. Thus, uveitis and optic neuritis remain a challenging field to ophthalmologists and a significant public health concern. OBJECTIVE This review summarizes findings showing the benefits of a treatment with melatonin in experimental models of these inflammatory ocular diseases. RESULTS Oxidative and nitrosative damage, tumor necrosis factor, and prostaglandin production have been involved in the pathogeny of uveitis and optic neuritis. Melatonin is an efficient antioxidant and antinitridergic, and has the ability to reduce prostaglandin and tumor necrosis factor levels both in the retina and optic nerve. Moreover, melatonin not only prevents functional and structural consequences of experimental uveitis and optic neuritis, but it is also capable of suppressing the actively ongoing ocular inflammatory response. CONCLUSIONS Since melatonin protects ocular tissues against inflammation, it could be a potentially useful anti-inflammatory therapy in ophthalmology.
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Affiliation(s)
- Marcos L. Aranda
- Laboratory of Retinal Neurochemistry and Experimental Ophthalmology, Department of Human Biochemistry, School of Medicine/CEFyBO, University of Buenos Aires/CONICET, Buenos Aires, Argentina
| | - María Florencia González Fleitas
- Laboratory of Retinal Neurochemistry and Experimental Ophthalmology, Department of Human Biochemistry, School of Medicine/CEFyBO, University of Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Hernán Dieguez
- Laboratory of Retinal Neurochemistry and Experimental Ophthalmology, Department of Human Biochemistry, School of Medicine/CEFyBO, University of Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Agustina Iaquinandi
- Laboratory of Retinal Neurochemistry and Experimental Ophthalmology, Department of Human Biochemistry, School of Medicine/CEFyBO, University of Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Pablo H. Sande
- Laboratory of Retinal Neurochemistry and Experimental Ophthalmology, Department of Human Biochemistry, School of Medicine/CEFyBO, University of Buenos Aires/CONICET, Buenos Aires, Argentina
| | | | - Ruth E. Rosenstein
- Address correspondence to this author at the Department of Human Biochemistry, School of Medicine, CEFyBO, University of Buenos Aires, CONICET, Paraguay 2155, 5th Floor, (1121), Buenos Aires, Argentina;, Tel: 54-11-45083672 (ext 37); Fax: 54-11-45083672 (ext 317);, E-mail:
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Griggs AN, Yaw TJ, Haynes JS, Ben-Shlomo G, Tofflemire KL, Allbaugh RA. Bioavailability and biochemical effects of diclofenac sodium 0.1% ophthalmic solution in the domestic chicken (Gallus gallus domesticus). Vet Ophthalmol 2016; 20:171-176. [PMID: 27167494 DOI: 10.1111/vop.12387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To determine if topical ophthalmic diclofenac sodium 0.1% solution alters renal parameters in the domestic chicken, and to determine if the drug is detectable in plasma after topical ophthalmic administration. ANIMALS Thirty healthy domestic chickens. PROCEDURES Over 7 days, six birds were treated unilaterally with one drop of artificial tear solution (group 1), 12 birds were treated unilaterally (group 2) and 12 bilaterally (group 3) with diclofenac sodium 0.1% ophthalmic solution. Treatments were provided every 12 h in all groups. Pre- and post-treatment plasma samples from all birds were evaluated for changes in albumin, total protein, and uric acid. Post-treatment samples of all birds, collected 15 min post-administration, were analyzed by high-performance liquid chromatography with mass spectrometry for diclofenac sodium detection. A randomly selected renal sample from each group was submitted for histopathologic review. RESULTS Changes in pre- and post-treatment plasma albumin were significant (P < 0.05) in groups 2 and 3, but not for group 1. Pre- and post-treatment changes in total protein and uric acid were not significant for any group. Diclofenac sodium was not detectable (limit of detection = 0.10 ng/mL) in plasma samples from birds in group 1. Post-treatment concentration of diclofenac in group 3 was statistically greater than group 2 (P = 0.0008). Histopathologic changes did not identify diclofenac-induced acute renal tubular necrosis. CONCLUSIONS Ophthalmic diclofenac sodium 0.1% administered topically every 12 h in one or both eyes for 7 days is detectable in systemic circulation in the domestic chicken, but does not cause overt significant changes in plasma uric acid or total protein.
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Affiliation(s)
- Angela N Griggs
- College of Veterinary Medicine, Iowa State University, 1600 S. 16th Street, Ames, IA, 50011, USA
| | - Taylor J Yaw
- College of Veterinary Medicine, Iowa State University, 1600 S. 16th Street, Ames, IA, 50011, USA
| | - Joseph S Haynes
- College of Veterinary Medicine, Iowa State University, 1600 S. 16th Street, Ames, IA, 50011, USA
| | - Gil Ben-Shlomo
- College of Veterinary Medicine, Iowa State University, 1600 S. 16th Street, Ames, IA, 50011, USA
| | - Kyle L Tofflemire
- College of Veterinary Medicine, Iowa State University, 1600 S. 16th Street, Ames, IA, 50011, USA
| | - Rachel A Allbaugh
- College of Veterinary Medicine, Iowa State University, 1600 S. 16th Street, Ames, IA, 50011, USA
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Cuvas Apan O, Ozer MA, Takir S, Apan A, Sengul D. Effect of topical administration of tramadol on corneal wound healing in rats. Int Ophthalmol 2016; 36:675-80. [PMID: 26820482 DOI: 10.1007/s10792-016-0184-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 01/19/2016] [Indexed: 12/17/2022]
Abstract
In this study, we aimed to investigate the effects of topical tramadol administration on corneal wound healing, and examine ophthalmic structures and intraocular pressure 7 days after tramadol administration. The experiments were conducted on eight male Wistar rats (250-300 g). After ophthalmic examination, epithelial cell layers in the central cornea were wounded. Rats received 30 μL of tramadol hydrochloride in one eye (Group Tramadol) and the same volume of vehicle in the other (Group Control) every 12 h for 7 days. Both eyes were stained with fluorescein dye, photographed, and wound area was calculated every 8 h until complete healing was observed. Eye blink frequency and corneal reflex tests were measured before and after drug administrations. After 7 days, slit lamp biomicroscopy, fundoscopy, Goldmann applanation tonometry, and histological evaluation were performed. There was no difference in the corneal wound healing rates between the tramadol and control groups. Reduction in wound area over time was also similar; group-time interaction was insignificant (F = 738.911; p = 0.225). Tramadol application resulted in blinking and blepharospasm for 30 s, but vehicle did not. Corneal reflex was intact and eye blink frequency test results were similar in all measurement times in both groups. Slit lamp biomicroscopy, fundoscopy, and intraocular pressures were within normal range. Corneal cells appeared unaffected by the repeated doses of tramadol for 7 days. Topical tramadol application on the cornea did not cause any side effect, except for initial temporary blinking and blepharospasm. Corneal wound healing was not affected, either.
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Affiliation(s)
- Ozgun Cuvas Apan
- Department of Anesthesiology and Intensive Care Medicine, Giresun University Medical Faculty, Nizamiye Yerleskesi, Orhan Yılmaz Caddesi, Mumcular Sokak No:1, Merkez, 28200, Giresun, Turkey.
| | - Murat Atabey Ozer
- Department of Ophthalmology, Giresun University Medical Faculty, Giresun, Turkey
| | - Selcuk Takir
- Department of Clinical Pharmacology, Giresun University Medical Faculty, Giresun, Turkey
| | - Alparslan Apan
- Department of Anesthesiology and Intensive Care Medicine, Giresun University Medical Faculty, Nizamiye Yerleskesi, Orhan Yılmaz Caddesi, Mumcular Sokak No:1, Merkez, 28200, Giresun, Turkey
| | - Demet Sengul
- Department of Pathology, Giresun University Medical Faculty, Giresun, Turkey
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Abstract
Corneal emergencies can be due to a number of different causes and may be vision threatening if left untreated. In an attempt to stabilize the cornea, it is of benefit to place an Elizabethan collar on the patient to prevent further corneal damage. This article discusses the diagnosis, prognosis, and management of corneal emergencies in dogs and cats.
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Sande PH, Álvarez J, Calcagno J, Rosenstein RE. Preliminary findings on the effect of melatonin on the clinical outcome of cataract surgery in dogs. Vet Ophthalmol 2015; 19:184-94. [DOI: 10.1111/vop.12282] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Pablo H. Sande
- Laboratory of Retinal Neurochemistry and Experimental Ophthalmology; Department of Human Biochemistry; School of Medicine/CEFyBO; University of Buenos Aires/CONICET; Buenos Aires Argentina
| | - Javier Álvarez
- Laboratory of Retinal Neurochemistry and Experimental Ophthalmology; Department of Human Biochemistry; School of Medicine/CEFyBO; University of Buenos Aires/CONICET; Buenos Aires Argentina
| | - Javier Calcagno
- CEBBAD- Natural and Anthropological Sciences; Superior Research Institute; Buenos Aires Argentina
| | - Ruth E. Rosenstein
- Laboratory of Retinal Neurochemistry and Experimental Ophthalmology; Department of Human Biochemistry; School of Medicine/CEFyBO; University of Buenos Aires/CONICET; Buenos Aires Argentina
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Hsu KK, Pinard CL, Johnson RJ, Allen DG, KuKanich BK, Nykamp SG. Systemic absorption and adverse ocular and systemic effects after topical ophthalmic administration of 0.1% diclofenac to healthy cats. Am J Vet Res 2015; 76:253-65. [PMID: 25710762 DOI: 10.2460/ajvr.76.3.253] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To quantify plasma concentrations and determine adverse ocular, renal, or hepatic effects associated with repeated topical ophthalmic application of 0.1% diclofenac to healthy cats. ANIMALS 8 healthy sexually intact male cats. PROCEDURES A randomized, placebo-controlled crossover study was conducted. A topical formulation of 0.1% diclofenac was administered 4 times/d for 7 days to 4 cats, and artificial tear (control) solution was administered to the other 4 cats. After a 12-day washout period, cats received the other treatment. Ophthalmic examinations were performed daily. Plasma samples were obtained on days 1 and 7 for pharmacokinetic analysis. A CBC, serum biochemical analysis, urinalysis, determination of urine protein-to-creatinine ratio, and determination of glomerular filtration rate were performed before the start of the study and after each 7-day treatment period. RESULTS Mild conjunctival hyperemia was the only adverse ocular effect detected. Maximal drug concentration and area under the curve were significantly higher on day 7 than on day 1. Diclofenac-treated cats had a significantly lower glomerular filtration rate than did control-treated cats after the second but not after the first treatment period, presumably associated with iatrogenic hypovolemia. CONCLUSIONS AND CLINICAL RELEVANCE Topical ophthalmic administration of 0.1% diclofenac was well tolerated in healthy cats, with only mild signs of ocular irritation. Detectable systemic concentrations of diclofenac were achieved with accumulation over 7 days. Systemic absorption of diclofenac may be associated with reduced glomerular filtration rate, particularly in volume-contracted animals. Topical ophthalmic 0.1% diclofenac should be used with caution in volume-contracted or systemically ill cats.
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Affiliation(s)
- Kimberly K Hsu
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada
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Toguri JT, Lehmann C, Laprairie RB, Szczesniak AM, Zhou J, Denovan-Wright EM, Kelly MEM. Anti-inflammatory effects of cannabinoid CB(2) receptor activation in endotoxin-induced uveitis. Br J Pharmacol 2014; 171:1448-61. [PMID: 24308861 DOI: 10.1111/bph.12545] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 11/28/2013] [Accepted: 12/02/2013] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND AND PURPOSE Cannabinoid CB2 receptors mediate immunomodulation. Here, we investigated the effects of CB2 receptor ligands on leukocyte-endothelial adhesion and inflammatory mediator release in experimental endotoxin-induced uveitis (EIU). EXPERIMENTAL APPROACH EIU was induced by intraocular injection of lipopolysaccharide (LPS, 20 ng·μL(-1) ). Effects of the CB2 receptor agonist, HU308 (1.5% topical), the CB2 receptor antagonist, AM630 (2.5 mg·kg(-1) i.v.), or a combination of both compounds on leukocyte-endothelial interactions were measured hourly for 6 h in rat iridial vasculature using intravital microscopy. Anti-inflammatory actions of HU308 were compared with those of clinical treatments for uveitis - dexamethasone, prednisolone and nepafenac. Transcription factors (NF-κB, AP-1) and inflammatory mediators (cytokines, chemokines and adhesion molecules) were measured in iris and ciliary body tissue. KEY RESULTS Leukocyte-endothelium adherence was increased in iridial microvasculature between 4-6 h after LPS. HU308 reduced this effect after LPS injection and decreased pro-inflammatory mediators: TNF-α, IL-1β, IL-6, CCL5 and CXCL2. AM630 blocked the actions of HU-308, and increased leukocyte-endothelium adhesion. HU-308 decreased levels of the transcription factors NF-κB and AP-1, while AM630 increased levels of NF-κB. Topical treatments with dexamethasone, prednisolone or nepafenac, failed to alter leukocyte adhesion or mitigate LPS-induced increases in inflammatory mediators during the 6 h of EIU. CONCLUSION AND IMPLICATIONS Activation of CB2 receptors was anti-inflammatory in a model of acute EIU and involved a reduction in NF-κB, AP-1 and inflammatory mediators. CB2 receptors may be promising drug targets for the development of novel ocular anti-inflammatory agents. LINKED ARTICLES This article is part of a themed section on Cannabinoids 2013. To view the other articles in this section visit http://dx.doi.org/10.1111/bph.2014.171.issue-6.
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Affiliation(s)
- J T Toguri
- Department of Pharmacology, Dalhousie University, Halifax, NS, Canada
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Mathews K, Kronen PW, Lascelles D, Nolan A, Robertson S, Steagall PVM, Wright B, Yamashita K. Guidelines for Recognition, Assessment and Treatment of Pain. J Small Anim Pract 2014; 55:E10-68. [DOI: 10.1111/jsap.12200] [Citation(s) in RCA: 178] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
Feline viral diseases are common and cats can be presented with a variety of clinical manifestations. Ocular disease associated with viral pathogens is not unusual, particularly with viruses causing upper respiratory tract disease in cats, such as feline herpesvirus type 1 and feline calicivirus. These agents mainly cause ocular surface disease. Other viruses, such as feline immunodeficiency virus and feline coronavirus, can cause uveitis, while feline leukemia virus can induce ocular lymphosarcoma. This review covers the most common viral pathogens of cats that cause ocular manifestations, the specific features of the ocular diseases caused by these viruses and therapeutic recommendations.
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Affiliation(s)
- Jean Stiles
- Department of Veterinary Clinical Sciences, Purdue University College of Veterinary Medicine, West Lafayette, IN, USA.
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Krustev SZ, Rusenova NV, Haritova AM. Effect of diclofenac on ocular levels of ciprofloxacin and lomefloxacin in rabbits with endophthalmitis. Drug Dev Ind Pharm 2013; 40:1459-62. [DOI: 10.3109/03639045.2013.828225] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Langlois DK, Pelosi A, Kruger JM. Successful Treatment of Intracardiac and Intraocular Blastomycosis in a Dog with Combination Azole Therapy. J Am Anim Hosp Assoc 2013; 49:273-80. [DOI: 10.5326/jaaha-ms-5874] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A 4 yr old spayed female Labrador retriever with clinical signs of blindness, cutaneous lesions, coughing, inappetence, and lethargy was diagnosed with disseminated blastomycosis based on cytologic (skin and lymph node aspirates) and histopathologic (skin biopsy) examinations of tissue samples. The dog deteriorated clinically during hospitalization and developed sustained ventricular tachycardia. Echocardiography revealed pericardial effusion, a nodule associated with the left ventricular papillary muscle, and a right atrial mural lesion. Therapy for myocardial performance and glaucoma was initiated. A combination of itraconazole and fluconazole successfully treated the dog. The dog regained vision in the left eye (oculus sinister [OS]) and had no residual cardiac disease detectable by either electrocardiography or echocardiography. This report is unique in documenting survival from intracardiac blastomycosis and in the use of combination azole therapy for treating disseminated disease with intraocular involvement.
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Affiliation(s)
- Daniel K. Langlois
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI
| | - Augusta Pelosi
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI
| | - John M. Kruger
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI
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Lee CH, Lin SL, Chi TT, Chang SH, Wang HC. Effect of topical administration of 0.8% nalbuphine on the cornea in dogs after phacoemulsification. J Vet Med Sci 2013; 75:1041-7. [PMID: 23708961 DOI: 10.1292/jvms.12-0125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
It is suggested that topical application of opioids may provide localized analgesia without delay in corneal wound healing. This study was designed to evaluate the effect of topical application of 0.8% nalbuphine on post-operative ocular pain in dogs. Twelve eyes from 11 dogs undergoing phacoemulsification cataract surgery were divided into a nalbuphine group (n=6) and saline group (n=6). Postoperatively, the nalbuphine group received 0.1 ml of topical 0.8% alkalinized nalbuphine (pH 5.6) every 8 hr, and the saline group received 0.1 ml of topical saline (pH 5.9) as a placebo. All dogs received systemic postoperative pain managements with oral tramadol (4 mg/kg) and prednisolone (0.5 mg/kg) every 8 hr. All dogs received pre- and post-ophthalmic examinations. Pain was scored in the dogs using a pain scoring system modified from the University of Melbourne pain scale at 15, 30 and 60 min following the topical treatment on days 1 and 2 (24 and 48 hr after surgery). Eye blink frequency and corneal touch threshold (CTT) were recorded at the same time. There was no statistical difference in the pain score between groups. Significant decreases in CTT, blepharospasm and eye blink frequency were observed after the topical nalbuphine treatment. This indicated that topical application of 0.8% nalbuphine solution can produce a rapid reduction of corneal discomfort in dogs.
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Affiliation(s)
- Chen-Han Lee
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung-Hsing University, 250-1 Kuo Kuang Road, Taichung 402, Taiwan
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Miller VS, Allbaugh RA, Roush JK, Rankin AJ. Repeated anterior chamber fluorophotometric evaluation of the eyes of ophthalmologically normal dogs. Am J Vet Res 2012; 73:1503-6. [PMID: 23013174 DOI: 10.2460/ajvr.73.10.1503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To perform repeated anterior chamber fluorophotometry on both eyes of ophthalmologically normal dogs to measure fluorescein concentrations over a 5-day period and identify any change in the degree of anterior chamber fluorescence over time or difference between eyes. ANIMALS 9 healthy adult dogs (18 eyes). PROCEDURES Each dog received an IV injection of 10% fluorescein solution, and anterior chamber fluorophotometry was performed 1 hour later on both eyes. This procedure was repeated at the same time each day for 5 consecutive days. RESULTS A significant increase in fluorescein concentration was evident in the anterior chamber on day 5 in the right eye and days 2, 3, 4, and 5 in the left eye. There was no significant difference in concentration between the left and the right eyes on any day. CONCLUSIONS AND CLINICAL RELEVANCE The increase in ocular fluorescein concentration in the study dogs was unlikely to be of clinical importance and is only pertinent for subsequent research studies. This is a limitation that should be considered when reporting fluorophotometry data as fluorescein concentration or as change in fluorescein concentration from baseline.
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Affiliation(s)
- Victoria S Miller
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA
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Henriksen MDL, Andersen PH, Plummer CE, Mangan B, Brooks DE. Equine corneal stromal abscesses: An evolution in the understanding of pathogenesis and treatment during the past 30 years. EQUINE VET EDUC 2012. [DOI: 10.1111/j.2042-3292.2012.00440.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hilton H, Magdesian K, Groth A, Knych H, Stanley S, Hollingsworth S. Distribution of Flunixin Meglumine and Firocoxib into Aqueous Humor of Horses. J Vet Intern Med 2011; 25:1127-33. [DOI: 10.1111/j.1939-1676.2011.0763.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Clark JS, Bentley E, Smith LJ. Evaluation of topical nalbuphine or oral tramadol as analgesics for corneal pain in dogs: a pilot study. Vet Ophthalmol 2011; 14:358-64. [DOI: 10.1111/j.1463-5224.2011.00883.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Pinard CL, Gauvin D, Moreau M, Martel-Pelletier J, Pelletier JP, Troncy E. Measurements of canine aqueous humor inflammatory mediators and the effect of carprofen following anterior chamber paracentesis. Vet Ophthalmol 2011; 14:296-303. [DOI: 10.1111/j.1463-5224.2011.00876.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
In farm animal practice, there is often a clear tension between animal welfare and the economic basis of food animal production. Animal well-being is regularly compromised by the stringencies of intensive animal husbandry. Conditions such as infectious keratoconjunctivitis or ocular squamous cell carcinoma, while having negative effects on animal welfare, also have profoundly deleterious effects on animal production. This article discusses the welfare implications of the ocular conditions covered further in the following articles and how these affect treatment of these diseases.
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Affiliation(s)
- David L Williams
- Veterinary Ophthalmology and Animal Welfare, Department of Veterinary Medicine, University of Cambridge, Cambridge CB3 0ES, England, UK.
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Sparkes AH, Heiene R, Lascelles BDX, Malik R, Real L, Robertson S, Scherk M, Taylor P. ISFM and AAFP Consensus Guidelines: Long-Term use of NSAIDs in Cats. J Feline Med Surg 2010; 12:521-38. [DOI: 10.1016/j.jfms.2010.05.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
NSAIDs and cats Non-steroidal anti-inflammatory drugs (NSAIDs) are an important class of drug in feline medicine, having analgesic, anti-inflammatory and antipyretic activity. While most published data on their use in this species relate to short-term (often perioperative) therapy, there is increasing evidence of the value of these drugs in treating chronic pain in cats (for example, that associated with degenerative joint disease), and some NSAIDs have now become licensed for long-term use in cats in some geographies. Most of our knowledge of therapeutic mechanisms or adverse drug reactions associated with NSAIDs is extrapolated from work in other species, and there is a paucity of published data relating to cats. Guidelines These guidelines have been drawn together by an expert panel, which have reviewed the current literature on long-term NSAID use in cats and other species, and developed guidance on their use based on this information. The aim is to provide practical information for veterinarians to encourage appropriate NSAID therapy whenever cats will benefit from the use of these drugs.
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Affiliation(s)
| | - Reidun Heiene
- Associate Professor, Department of Companion Animals Clinical Sciences, Norwegian School of Veterinary Sciences, Oslo, Norway
| | - B Duncan X Lascelles
- Associate Professor of Surgery, Director, Comparative Pain Research Laboratory, Director, Integrated Pain Management Service, North Carolina State University College of Veterinary Medicine, Raleigh, NC 27606, USA
| | - Richard Malik
- Centre for Veterinary Education, The University of Sydney, Camperdown, NSW 2006, Australia
| | | | - Sheilah Robertson
- Section of Anesthesia and Pain Management, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32610, USA
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Ribeiro A, Escobar A, Motheo T, Sakamoto C, Godoy G, Costa M, Laus J. Effects of carprofen administered by different routes to control experimental uveitis in dogs. ARQ BRAS MED VET ZOO 2010. [DOI: 10.1590/s0102-09352010000200010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Efficacy of carprofen, administered by different routes, was studied in experimental uveitis in dogs. Anterior chamber paracenteses was accomplished at two different moments (M0 and M1), with a five hour interval between them. At M0 and M1, 0.2mL of aqueous humor was collected and quantitation of total protein and prostaglandin E2 (PGE2) were determined. Four groups were formed (n=8), which received carprofen at the end of M0, by the following routes: subcutaneous (GIm), subconjunctival (GII), and topical (GIII). A fourth group that received no treatment was instituted (Control). Conjunctival histopathology of the GII animals was performed. In all groups, values of protein and PGE2 significantly enhanced at M1; however, they did not significantly change among groups at M1. Inflammatory exudate of acute character and mild hemorrhage were seen at histopathology after carprofen administration. Carprofen was unable to inhibit PGE2 synthesis and the protein influx to the anterior chamber by any of the tested routes. However, the reduction of 44% in protein levels (topical) suggests that the agent can be used by this route as an adjuvant to control uveitis in dogs.
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Wotman KL, Utter ME. Effect of treatment with a topical ophthalmic preparation of 1% nalbuphine solution on corneal sensitivity in clinically normal horses. Am J Vet Res 2010; 71:223-8. [DOI: 10.2460/ajvr.71.2.223] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Park SA, Park YW, Son WG, Kim TH, Ahn JS, Ahn JT, Kim SE, Lee I, Seo K. Evaluation of the analgesic effect of intracameral lidocaine hydrochloride injection on intraoperative and postoperative pain in healthy dogs undergoing phacoemulsification. Am J Vet Res 2010; 71:216-22. [DOI: 10.2460/ajvr.71.2.216] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
Cyclooxygenase (COX) catalyzes the conversion of arachidonic acid into prostaglandins (PGs), which play a significant role in health and disease in the gastrointestinal tract (GI) and in the renal, skeletal, and ocular systems. COX-1 is constitutively expressed and found in most normal tissues, whereas COX-2 can be expressed at low levels in normal tissues and is highly induced by pro-inflammatory mediators. Inhibitors of COX activity include: (1) conventional nonselective, nonsteroidal anti-inflammatory drugs (ns-NSAIDs) and (2) COX-2 selective nonsteroidal anti-inflammatory drugs (COX-2 s-NSAIDs). Inhibition of COX-1 often elicits GI toxicity in animals and humans. Therefore, COX-2 s-NSAIDs were developed to provide a selective COX-2 agent, while minimizing the attendant COX-1-mediated GI toxicities. Rats and dogs overpredict COX inhibition for renal effects such as renal handling of electrolytes in humans. COX inhibitors are shown to have both beneficial and detrimental effects, such as on healing of ligament or tendon tears, on the skeletal system in animal models. Certain ophthalmic conditions such as glaucoma and keratitis are associated with increased COX-2 expression, suggesting a potential role in their pathophysiology.
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Affiliation(s)
- Zaher A Radi
- Pfizer Global R&D, Drug Safety R&D, St. Louis, Missouri 63017, USA.
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Alpha-tocopherol protects against oxidative damage to lipids of the rod outer segments of the equine retina. Vet J 2008; 182:463-8. [PMID: 18829353 DOI: 10.1016/j.tvjl.2008.08.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2008] [Revised: 06/30/2008] [Accepted: 08/13/2008] [Indexed: 01/12/2023]
Abstract
Oxidative stress is a possible risk factor for eye diseases. Lipid peroxidation is one of the major events induced by oxidative stress and is particularly active in polyunsaturated fatty acid (PUFA)-rich biomembranes. This work evaluated endogenous lipid antioxidants, in vitro non-enzymatic lipid peroxidation of rod outer segment membranes (ROS), the fatty acid composition during oxidative damage of total lipids from equine retina and ROS, and the protective action of alpha-tocopherol (alpha-Toc). The major lipid soluble antioxidant was alpha-Toc followed by retinoids and carotenoids. The retina contained a high percentage of PUFAs, mainly docosahexaenoic acid (22:6n-3) and arachidonic acid (20:4n-6). Lipid peroxidation of the equine ROS, induced by Fe(2+)-ascorbate, was monitored using chemiluminescence (CL) with or without pre-treatment with alpha-Toc. With alpha-Toc pre-treatment, CL values were significantly decreased. The most abundant fatty acid was 22:6n-3. After 3h incubation, 95% of total PUFAs were destroyed by peroxidation, whereas in alpha-Toc pre-treated ROS the percentage was significantly decreased. The results show that the retina has an endogenous lipid soluble antioxidant system. ROS were highly sensitive to oxidative damage, since their fatty acid composition was markedly modified during the lipid peroxidation process. The protective role of alpha-Toc as an antioxidant was evident and it could be used in the treatment of equine ocular diseases in which free radicals are involved.
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39
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Abstract
The clinical signs of uveitis occur as a result of inflammation within the vascular coat of the eye, which causes breakdown of the blood-aqueous barrier and blood-retinal barrier. Many infectious and noninfectious causes can incite episodes of uveitis. Although a complete diagnostic evaluation is highly recommended to identify any underlying etiologic agent, many cases remain idiopathic in nature. The goals of therapy are preserving vision, minimizing pain, and halting inflammation.
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Affiliation(s)
- Wendy M Townsend
- Department of Small Animal Clinical Sciences, D208 Veterinary Medical Center, Michigan State University, East Lansing, MI 48824-1314, USA.
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Radi ZA, Render JA. The Pathophysiologic Role of Cyclooxygenases in the Eye. J Ocul Pharmacol Ther 2008; 24:141-51. [DOI: 10.1089/jop.2007.0078] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Zaher A. Radi
- Drug Safety Research and Development, Pfizer Global Research and Development, Chesterfield, MO
| | - James A. Render
- Drug Safety Research and Development, Pfizer Global Research and Development, Chesterfield, MO
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41
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Infectious Uveitis. CONSULTATIONS IN FELINE INTERNAL MEDICINE 2006. [PMCID: PMC7149972 DOI: 10.1016/b0-72-160423-4/50006-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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42
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Abstract
Feline ocular emergencies include any ophthalmic condition that has rapidly developed or is the result of trauma to the eye or periocular structures. Common feline emergencies include proptosis, lid lacerations, corneal ulcers, and foreign bodies. Complete ophthalmic examination including procurement of the minimal ophthalmic database (Schirmer tear test, fluorescein stain, and intraocular pressure measurement) should be obtained whenever possible to ensure that the complete and correct diagnosis is made. Concern for the patient's vision and ocular comfort should guide the practioner's diagnostic and therapeutic plan. This article reviews some of the more common feline ocular emergencies, including conditions affecting the orbit and globe, adnexa, conjunctiva, and cornea. Feline uveitis, glaucoma, and lenticular diseases are covered more thoroughly elsewhere in this issue.
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Affiliation(s)
- Elizabeth A Giuliano
- American College of Veterinary Ophthalmologists, Veterinary Medical Teaching Hospital, University of Missouri-Columbia, 379 East Campus Drive, Columbia, MO 65211, USA.
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