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Cohen S, Foss E, Beths T, Musk GC. An Exploration of Analgesia Options for Australian Sheep. Animals (Basel) 2024; 14:990. [PMID: 38612229 PMCID: PMC11011129 DOI: 10.3390/ani14070990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 03/12/2024] [Accepted: 03/19/2024] [Indexed: 04/14/2024] Open
Abstract
During their lifetime, sheep undergo many painful husbandry and disease processes. Procedures undertaken on the farm, such as tail docking, castration, and mulesing, all cause considerable pain. In addition, sheep may experience painful diseases and injuries that require treatment by veterinary practitioners, and in biomedical research, sheep may undergo painful experimental procedures or conditions. It is important due to ethics, animal welfare, social licence, and, at times, legal requirements for farmers, veterinary practitioners, and researchers to provide pain relief for animals in their care. While there is a heightened awareness of and a greater interest in animal welfare, there remain few licensed and known analgesia options for sheep within Australia. A literature review was undertaken to identify currently known and potential future options for analgesic agents in sheep in farm and biomedical settings. Non-steroidal anti-inflammatories, opioids, local anaesthetics, α2 adrenoreceptor agonists, and NMDA receptor antagonists are some of the more common classes of analgesic drugs referred to in the literature, but few drugs are registered for use in sheep, with even fewer proven to be effective. Only six analgesic product formulations, namely, lignocaine (e.g., Numocaine®), Tri-Solfen®, ketamine, xylazine, and meloxicam (oral transmucosal and injectable formulations), are currently registered in Australia and known to be efficacious in some types of painful conditions in sheep. The gap in knowledge and availability of analgesia in sheep can pose risks to animal welfare, social licence, and research outcomes. This article presents a summary of analgesic agents that have been used in sheep on farms and in clinical veterinary and biomedical research settings along with details on whether their efficacy was assessed, doses, routes of administration, indication for use, and pain assessment techniques (if any) used. The outcome of this research highlights the challenges, gaps, and opportunities for better analgesia options in sheep.
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Affiliation(s)
- Shari Cohen
- Animal Welfare Science Centre, University of Melbourne, Parkville, Melbourne, VIC 3010, Australia
| | - Emily Foss
- Melbourne Veterinary School, University of Melbourne, Parkville, Melbourne, VIC 3010, Australia; (E.F.); (T.B.)
| | - Thierry Beths
- Melbourne Veterinary School, University of Melbourne, Parkville, Melbourne, VIC 3010, Australia; (E.F.); (T.B.)
| | - Gabrielle C. Musk
- School of Human Sciences, University of Western Australia, Perth, WA 6009, Australia;
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Debuigne M, Chesnel MA, Chebroux A. The analgesic effects of magnesium in veterinary patients: a qualitative evidence synthesis. Vet Anaesth Analg 2024; 51:115-125. [PMID: 38331673 DOI: 10.1016/j.vaa.2024.01.002] [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: 07/28/2022] [Revised: 11/06/2023] [Accepted: 01/10/2024] [Indexed: 02/10/2024]
Abstract
OBJECTIVE To perform a qualitative evaluation of the analgesic effects of magnesium in domestic animals, including its anaesthetic sparing effects. STUDY DESIGN All database searches were made using PubMed and Google Scholar. Studies published after 1990, evaluating the use of magnesium and reporting information on analgesia, in dogs, cats, horses, cows, goats and sheep were selected (last search in August 2023). A reference check in the selected papers was performed to identify any study which was omitted. The CERQual (Confidence in Evidence from Reviews of Qualitative research) approach was used to assess confidence and analyse the evidence. RESULTS A total of 20 studies relevant to the analgesic effects of magnesium in veterinary patients and two reviews were included. All were published after 2006. Of the 20, five studies provided information about analgesia in the postoperative period in dogs with heterogenous results. Magnesium added epidurally increased the duration of the sensory block in several species. Motor block was also observed when added to spinal analgesia. Results regarding volatile agents sparing effect were conflicting. Occasional moderate adverse effects were reported in dogs, such as nausea and vomiting, when administered as a bolus in conscious animals, and hypotension when administered intraperitoneally. Collapse was reported in horses after epidural administration. CONCLUSIONS AND CLINICAL RELEVANCE The evidence of an analgesic effect of magnesium in veterinary patients remains scarce considering the paucity and low quality of published data. Further research may be helpful to establish the efficacy and indications of magnesium in multimodal analgesia in animals.
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La Rosa L, Twele L, Duchateau L, Gasthuys F, Kästner SB, Schauvliege S. The Antinociceptive Effect of Magnesium Sulphate Administered in the Epidural Space in Standing Horses. J Equine Vet Sci 2023; 123:104202. [PMID: 36592662 DOI: 10.1016/j.jevs.2022.104202] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 11/20/2022] [Accepted: 12/22/2022] [Indexed: 01/01/2023]
Abstract
To study the antinociceptive properties of epidural magnesium sulphate (MgSO4) in standing horses Experimental, placebo-controlled, masked, cross-over A group of six healthy horses Through an epidural catheter, 1 mg kg -1 MgSO4 (treatment Mg) diluted to a volume of 15 mL or the same volume of saline (treatment S) was administered over 15 minutes. Electrical, thermal and mechanical nociceptive thresholds were determined on the pelvic limb before and 20, 40, 60, 80, 100, 120, 140, 160 and 180 minutes after the start of the injection. Heart rate (HR) and respiratory frequency (fR) were recorded every 10 minutes. Blood samples were collected before treatment and every 30 minutes throughout the study period. Data were assessed for normality using a Shapiro-Wilk test. A linear mixed model with horse as random effect and time, treatment and their interaction as fixed effects was used. Treatments were compared at 20, 60, 120 and 180 minutes using the Wilcoxon rank sum test stratified for horse (global α = 0.05, with Bonferroni correction α = 0.0125). Epidural MgSO4 caused a significant increase in the electrical threshold (mA) (P = .0001), but no significant differences in thermal and mechanical nociceptive thresholds. During the injection of MgSO4, two horses collapsed. One stood up within 20 minutes and was able to continue the study, the second one was excluded. A significant difference was found for HR at T180 (Mg 44 ± 23 beats minute-1; S 32 ± 9 beats minute-1) (P = .0090). Epidural administration of MgSO4 caused an increase in the electrical threshold of the pelvic limbs of horses. Caution is warranted however, as with the current dose, 2 horses collapsed.
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Affiliation(s)
- Lavinia La Rosa
- Department of Surgery and Anesthesia of Domestic Animals, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
| | - Lara Twele
- Equine Clinic, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Luc Duchateau
- Department of Comparative Physiology and Biometrics, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Frank Gasthuys
- Department of Surgery and Anesthesia of Domestic Animals, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Sabine Br Kästner
- Equine Clinic, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Stijn Schauvliege
- Department of Surgery and Anesthesia of Domestic Animals, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
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Vujović KS, Vučković S, Stojanović R, Divac N, Medić B, Vujović A, Srebro D, Prostran M. Interactions between Ketamine and Magnesium for the Treatment of Pain: Current State of the Art. CNS & NEUROLOGICAL DISORDERS DRUG TARGETS 2022; 20:392-400. [PMID: 33475079 DOI: 10.2174/1871527320666210121144216] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 08/20/2020] [Accepted: 09/11/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Over the past three decades, NMDA-receptor antagonists have been shown to be efficient drugs for treating pain, particularly pain resistant to conventional analgesics. Emphasis will be on the old-new drugs, ketamine and magnesium, and their combination as a novel approach for treating chronic pain. METHODS The MEDLINE database was searched via PubMed for articles that were published up to March 1, 2020, with the keywords 'ketamine', 'magnesium', and 'pain' (in the title/abstract). RESULTS Studies in animals, as well as humans, have shown that interactions of ketamine and magnesium can be additive, antagonistic, and synergistic. These discrepancies might be due to differences in magnesium and ketamine dosage, administration times, and the chronological order of drug administration. Different kinds of pain can also be the source of divergent results. CONCLUSION This review explains why studies performed with a combination of ketamine and magnesium have given inconsistent results. Because of the lack of efficacy of drugs available for pain, ketamine and magnesium in combination provide a novel therapeutic approach that needs to be standardized with a suitable dosing regimen, including the chronological order of drug administration.
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Affiliation(s)
- Katarina S Vujović
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Sonja Vučković
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Radan Stojanović
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Nevena Divac
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Branislava Medić
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | | | - Dragana Srebro
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Milica Prostran
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
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Small A, Fisher AD, Lee C, Colditz I. Analgesia for Sheep in Commercial Production: Where to Next? Animals (Basel) 2021; 11:ani11041127. [PMID: 33920025 PMCID: PMC8070992 DOI: 10.3390/ani11041127] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/08/2021] [Accepted: 04/12/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Increasing societal and customer pressure to provide animals with ‘a life worth living’ continues to apply pressure on industry to alleviate pain associated with husbandry practices, injury and illness. Although a number of analgesic solutions are now available for sheep, providing some amelioration of the acute pain responses, this review has highlighted a number of potential areas for further research. Abstract Increasing societal and customer pressure to provide animals with ‘a life worth living’ continues to apply pressure on livestock production industries to alleviate pain associated with husbandry practices, injury and illness. Over the past 15–20 years, there has been considerable research effort to understand and develop mitigation strategies for painful husbandry procedures in sheep, leading to the successful launch of analgesic approaches specific to sheep in a number of countries. However, even with multi-modal approaches to analgesia, using both local anaesthetic and non-steroidal anti-inflammatory drugs (NSAID), pain is not obliterated, and the challenge of pain mitigation and phasing out of painful husbandry practices remains. It is timely to review and reflect on progress to date in order to strategically focus on the most important challenges, and the avenues which offer the greatest potential to be incorporated into industry practice in a process of continuous improvement. A structured, systematic literature search was carried out, incorporating peer-reviewed scientific literature in the period 2000–2019. An enormous volume of research is underway, testament to the fact that we have not solved the pain and analgesia challenge for any species, including our own. This review has highlighted a number of potential areas for further research.
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Affiliation(s)
- Alison Small
- CSIRO Agriculture & Food, Locked Bag 1, Armidale, NSW 2350, Australia; (C.L.); (I.C.)
- Correspondence: ; Tel.: +61-2-6776-1435
| | - Andrew David Fisher
- Animal Welfare Science Centre, University of Melbourne, Parkville, VIC 3052, Australia;
| | - Caroline Lee
- CSIRO Agriculture & Food, Locked Bag 1, Armidale, NSW 2350, Australia; (C.L.); (I.C.)
| | - Ian Colditz
- CSIRO Agriculture & Food, Locked Bag 1, Armidale, NSW 2350, Australia; (C.L.); (I.C.)
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Savić Vujović K, Vučković S, Vasović D, Medić B, Stojanović R, Divac N, Srebro D, Prostran M. Involvement of serotonergic and opioidergic systems in the antinociceptive effect of ketamine-magnesium sulphate combination in formalin test in rats. Pharmacol Rep 2019; 71:1014-1019. [PMID: 31563018 DOI: 10.1016/j.pharep.2019.05.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 04/05/2019] [Accepted: 05/24/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Ketamine and magnesium sulphate showed synergic interaction in the tail-immersion test and additive interaction in the rat formalin test. Aim of study was to evaluate the influence of serotonergic and opioidergic system of this combination in the formalin test in rats. METHODS Antinociceptive activity was assessed by the formalin test in male Wistar rats (200-250 g). Antagonists (naloxone and methysergide) were administrated 5 min before and magnesium sulphate 5 min after ketamine injection. Formalin (2.5%, 100 μL) was injected into the right hind paw surface (intraplantar) of rats 5 min after ketamine/magnesium combination. Data were recorded as the total time spent in pain related behavior after the injection of formalin or vehicle (0.9% NaCl). RESULTS In the intermediate phase of the formalin test, methysergide at a dose of 0.2 mg/kg did not have any effect, but at doses of 0.5 and 1 mg/kg it had a pronociceptive effect. Methysergide (0.2, 0.5 and 1 mg/kg) inhibited the antinociceptive effect of ketamine-magnesium sulphate combination. In the intermediate phase, naloxone at a dose of 0.2 mg/kg did not have any effect, but at a dose of 3 mg/kg it produced a pronociceptive effect. Naloxone (0.2 and 3 mg/kg) antagonized the antinociceptive effect of the ketamine (5 mg/kg)-magnesium sulphate (5 mg/kg) combination. CONCLUSION The results of the present study suggest that serotonergic and opioidergic systems are involved, at least in part, in the antinociceptive effect of the ketamine-magnesium sulphate combination in the model of inflammatory pain in rats.
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Affiliation(s)
- Katarina Savić Vujović
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia.
| | - Sonja Vučković
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Dolika Vasović
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Branislava Medić
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Radan Stojanović
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Nevena Divac
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Dragana Srebro
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Milica Prostran
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
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Carneiro RPB, Macedo GG, DeRossi R, Costa-E-Silva EV, Souza MIL. Welfare and pregnancy rate of ewes undergoing transcervical artificial insemination with ketamine subarachnoid anesthesia. Trop Anim Health Prod 2019; 51:1179-1186. [PMID: 30685834 DOI: 10.1007/s11250-019-01805-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 01/06/2019] [Indexed: 11/29/2022]
Abstract
This study aimed to evaluate the impact of subarachnoid anesthesia with ketamine during transcervical artificial insemination (TCAI) on the welfare of ewes and on subsequent pregnancy rates. Ninety Suffolk adult ewes were randomized into three treatment groups: control group (CG), which underwent the TCAI procedure as established by cervical traction (CG; n = 30) and two groups that received subarachnoid anesthesia with ketamine at a dose of either 0.75 mg/kg (KE0.75; n = 30) or 1.5 mg/kg (KE1.5; n = 30) 5 min before the cervical traction procedure. Intrauterine insemination was performed using frozen semen from three males previously analyzed and approved for fertility. The use of subarachnoid anesthesia decreased ewes' vocalizations (P = 0.0001) and abdominal contraction (P = 0.0150) during cervical manipulations. The CG had more groans and vocalizations at the moment of cervix clamping and applicator passage through the cervix (P = 0.001). The cervix traction was facilitated by anesthesia. For the control group, most of the cervical traction was done just up to the middle of the vagina (P = 0.0021). Pregnancy rates increased significantly with anesthesia (P = 0.04) as shown by the rates of 40.0%, 56.7%, and 66.7% for CG, KE1.5, and KE0.75, respectively. The CG showed behaviors associated with absolute immobility, which is suggestive of distress. In brief, the use of ketamine in subarachnoid anesthesia for transcervical artificial insemination in ewes facilitated cervical traction, increased the pregnancy rate, and improved animal welfare.
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Affiliation(s)
- Renata P B Carneiro
- Department of Veterinary Medicine, Animal Reproduction Laboratory, Faculty of Veterinary Medicine, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Gustavo G Macedo
- Department of Animal Reproduction, Faculty of Veterinary Medicine, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Rafael DeRossi
- Department of Veterinary Medicine, Surgery and Anesthesiology, Faculty of Veterinary Medicine, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil.
| | - Eliane V Costa-E-Silva
- Department of Veterinary Medicine, Animal Reproduction Laboratory, Faculty of Veterinary Medicine, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Maria Inês L Souza
- Institute of Biosciences (InBio), Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil
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Involvement of serotonergic, noradrenergic and gabaergic systems in the antinociceptive effect of a ketamine-magnesium sulfate combination in acute pain. ACTA VET-BEOGRAD 2018. [DOI: 10.2478/acve-2018-0009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Abstract
Ketamine and magnesium can interact in additive, supra-additive and antagonistic manners in analgesia or anesthesia. Ketamine is a non-competitive NMDA receptor antagonist. Magnesium is an endogenous non-competitive NMDA antagonist that causes anion channel blockade in a dose-dependent manner. It has been established that ketamine and magnesium interact synergistically in the tail-immersion test in rats.
To determine the role of serotonergic, GABAergic and noradrenergic systems in analgesia induced by the ketamine-magnesium sulfate combination.
Experiments were performed on male Wistar albino rats (200-250 g). Antinociception was evaluated by the tail-immersion test.
Methysergide (0.5 and 1 mg/kg, sc) administered alone did not affect nociception in rats. Methysergide (0.5 and 1 mg/kg, sc) antagonized the antinociceptive effect of the ketamine (5 mg/kg)-magnesium sulfate (5mg/kg) combination. Bicuculline (0.5 and 1 mg/kg, sc) given alone did not change the threshold to thermal stimuli in rats. Bicuculline (0.5 and 1 mg/kg, sc) antagonized the antinociceptive effect of the ketamine (5 mg/kg)-magnesium sulfate (5 mg/kg) combination. Yohimbine (0.5, 1 and 3 mg/kg, sc) applied alone did not change nociception. Yohimbine at a dose of 0.5 mg/kg did not influence the effect of ketamine (5 mg/kg)-magnesium sulfate (5 mg/kg), while yohimbine at doses of 1 and 3 mg/kg antagonized the antinociceptive effect of this combination.
Serotonergic, noradrenergic and GABAergic systems participate, at least in part, in the antinociceptive effect of the ketamine-magnesium sulfate combination in acute pain in rats.
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Azizkhani R, Bahadori A, Shariati M, Golshani K, Ahmadi O, Masoumi B. Ketamine versus Ketamine / magnesium Sulfate for Procedural Sedation and Analgesia in the Emergency Department: A Randomized Clinical Trial. Adv Biomed Res 2018; 7:19. [PMID: 29456990 PMCID: PMC5812085 DOI: 10.4103/abr.abr_143_16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The present study was designed to evaluate the effectiveness of magnesium sulfate (MgSO4) in procedural sedation and analgesia (PSA) when combined with ketamine in patients with fractures in emergency departments and required short and painful emergency procedures. MATERIALS AND METHODS In this study, 100 patients with fractures and dislocations who were presented to the emergency departments and required PSA for short and painful emergency procedures were randomly allocated to groups of ketamine plus MgSO4 or ketamine alone. Train of four (TOF) stimulation pattern was assessed using nerve stimulator machine and compared between groups. RESULTS The mean age of studied patients was 46.9 ± 9.3 years old. 48% were male and 52% were female. No significant differences were noted between groups in demographic variables. The status of TOF, 2 min after the injection of ketamine (1.5 mg/kg), in both groups was similar. After the injection of the second dose of ketamine (1 mg/kg) the status of TOF in four patients in ketamine plus MgSO4 (0.45 mg/kg) group changed, it was three quarters but in ketamine group, the status of TOF in all patients was four quarters. The difference between groups was not statistically significant (P = 0.12). CONCLUSION The findings revealed that for muscle relaxation during medical procedures in the emergency department, ketamine in combination with MgSO4 with this dose was not effective for muscle relaxation during procedures.
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Affiliation(s)
- Reza Azizkhani
- From the Department of Emergency Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Azadeh Bahadori
- Department of Anesthesiology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammadreza Shariati
- From the Department of Emergency Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Keyhan Golshani
- From the Department of Emergency Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Omid Ahmadi
- From the Department of Emergency Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Babak Masoumi
- From the Department of Emergency Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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Bujalska-Zadrożny M, Tatarkiewicz J, Kulik K, Filip M, Naruszewicz M. Magnesium enhances opioid-induced analgesia – What we have learnt in the past decades? Eur J Pharm Sci 2017; 99:113-127. [DOI: 10.1016/j.ejps.2016.11.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 11/15/2016] [Accepted: 11/19/2016] [Indexed: 02/07/2023]
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Fonseca JF, Souza-Fabjan JMG, Oliveira MEF, Leite CR, Nascimento-Penido PMP, Brandão FZ, Lehloenya KC. Nonsurgical embryo recovery and transfer in sheep and goats. Theriogenology 2016; 86:144-51. [DOI: 10.1016/j.theriogenology.2016.04.025] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/12/2015] [Accepted: 03/14/2016] [Indexed: 11/16/2022]
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Bahrenberg A, Dzikiti BT, Fosgate GT, Stegmann FG, Tacke SP, Rioja E. Antinociceptive effects of epidural magnesium sulphate alone and in combination with morphine in dogs. Vet Anaesth Analg 2015; 42:319-28. [DOI: 10.1111/vaa.12211] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Accepted: 01/29/2014] [Indexed: 01/28/2023]
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Humphrey S, Kirby R, Rudloff E. Magnesium physiology and clinical therapy in veterinary critical care. J Vet Emerg Crit Care (San Antonio) 2014; 25:210-25. [PMID: 25427407 DOI: 10.1111/vec.12253] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 09/30/2014] [Indexed: 12/26/2022]
Abstract
OBJECTIVE To review magnesium physiology including absorption, excretion, and function within the body, causes of magnesium abnormalities, and the current applications of magnesium monitoring and therapy in people and animals. ETIOLOGY Magnesium plays a pivotal role in energy production and specific functions in every cell in the body. Disorders of magnesium can be correlated with severity of disease, length of hospital stay, and recovery of the septic patient. Hypermagnesemia is seen infrequently in people and animals with significant consequences reported. Hypomagnesemia is more common in critically ill people and animals, and can be associated with platelet, immune system, neurological, and cardiovascular dysfunction as well as alterations in insulin responsiveness and electrolyte imbalance. DIAGNOSIS Measurement of serum ionized magnesium in critically or chronically ill veterinary patients is practical and provides information necessary for stabilization and treatment. Tissue magnesium concentrations may be assessed using nuclear magnetic resonance spectroscopy as well as through the application of fluorescent dye techniques. THERAPY Magnesium infusions may play a therapeutic role in reperfusion injury, myocardial ischemia, cerebral infarcts, systemic inflammatory response syndromes, tetanus, digitalis toxicity, bronchospasms, hypercoagulable states, and as an adjunct to specific anesthetic or analgesic protocols. Further veterinary studies are needed to establish the frequency and importance of magnesium disorders in animals and the potential benefit of magnesium infusions as a therapeutic adjunct to specific diseases. PROGNOSIS The prognosis for most patients with magnesium disorders is variable and largely dependent on the underlying cause of the disorder.
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Affiliation(s)
- Sarah Humphrey
- From the Animal Emergency Center and Specialty Services, Glendale, WI 52309
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Synergistic interaction between ketamine and magnesium in lowering body temperature in rats. Physiol Behav 2014; 127:45-53. [DOI: 10.1016/j.physbeh.2014.01.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 11/20/2013] [Accepted: 01/14/2014] [Indexed: 11/19/2022]
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