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Song WH, Sun I, Jang G, Lee JH, Jeong JH, Lee JC, Kim HC, Jeong CW. Feasibility study of a novel rectal cooling system for hypothermic radical prostatectomy in a swine model. Investig Clin Urol 2022; 63:475-481. [PMID: 35796142 PMCID: PMC9262486 DOI: 10.4111/icu.20220092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 04/15/2022] [Accepted: 04/26/2022] [Indexed: 11/26/2022] Open
Abstract
Thermal damage and inflammatory responses of the sphincter and neurovascular bundles (NVBs) are responsible for post-prostatectomy incontinence and erectile dysfunction. Intraoperative hypothermia in the pelvic cavity may reduce the occurrence of these complications. We evaluated the feasibility of a novel rectal cooling system using an animal model. A novel rectal cooling system consisting of a cooling console and a multi-lumen rectal balloon was developed. We conducted animal tests on male pigs to evaluate the efficacy and safety of the system. The primary endpoint was to maintain the temperature of the NVBs at 25℃ (±5℃) during and after the electrocauterization of the bladder neck for 10 seconds. The safety endpoint was device-related complications or significant changes in the core body temperature of the pigs. The NVB temperature was below 30℃ within 3 minutes of activation of the rectal balloon. The temperature of the proximal NVB was consistently maintained below 25℃ in all cases. The temperature 1 cm from the bladder neck did not rise above 38°C and dropped to the initial level within 1 minute after electrocauterization. During cooling, the minimum temperature at the apex of the prostate was reduced to 10.1℃. There were no device-related complications or significant changes in core body temperature throughout the experiment. Animal tests suggest the feasibility and safety of this novel rectal cooling system. A first-in-human trial to assess the safety and efficacy of this system during radical prostatectomy is warranted.
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Affiliation(s)
- Won Hoon Song
- Department of Urology, Seoul National University Hospital, Seoul, Korea
- Department of Urology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Inyoung Sun
- Department of Urology, Seoul National University Hospital, Seoul, Korea
| | - Gwan Jang
- Department of Urology, Seoul National University Hospital, Seoul, Korea
| | - Jeong Hoon Lee
- Department of Urology, Seoul National University Hospital, Seoul, Korea
- Department of Urology, SMG-SNU Boramae Medical Center, Seoul, Korea
| | - Jae Hyeon Jeong
- Department of Urology, Seoul National University Hospital, Seoul, Korea
| | - Jung Chan Lee
- Department of Biomedical Engineering, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Hee Chan Kim
- Department of Biomedical Engineering, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Chang Wook Jeong
- Department of Urology, Seoul National University Hospital, Seoul, Korea
- Department of Urology, Seoul National University College of Medicine, Seoul, Korea
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Awad H, Efanov A, Rajan J, Denney A, Gigax B, Kobalka P, Kelani H, Basso DM, Bozinovski J, Tili E. Histological Findings After Aortic Cross-Clamping in Preclinical Animal Models. J Neuropathol Exp Neurol 2021; 80:895-911. [PMID: 34534333 PMCID: PMC8783616 DOI: 10.1093/jnen/nlab084] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Spinal cord ischemic injury and paralysis are devastating complications after open surgical repair of thoracoabdominal aortic aneurysms. Preclinical models have been developed to simulate the clinical paradigm to better understand the neuropathophysiology and develop therapeutic treatment. Neuropathological findings in the preclinical models have not been comprehensively examined before. This systematic review studies the past 40 years of the histological findings after open surgical repair in preclinical models. Our main finding is that damage is predominantly in the grey matter of the spinal cord, although white matter damage in the spinal cord is also reported. Future research needs to examine the neuropathological findings in preclinical models after endovascular repair, a newer type of surgical repair used to treat aortic aneurysms.
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Affiliation(s)
- Hamdy Awad
- From the Department of Anesthesiology, Wexner Medical Center, The Ohio State University, Columbus, Ohio, USA
| | - Alexander Efanov
- From the Department of Anesthesiology, Wexner Medical Center, The Ohio State University, Columbus, Ohio, USA
| | - Jayanth Rajan
- From the Department of Anesthesiology, Wexner Medical Center, The Ohio State University, Columbus, Ohio, USA
| | - Andrew Denney
- From the Department of Anesthesiology, Wexner Medical Center, The Ohio State University, Columbus, Ohio, USA
| | - Bradley Gigax
- From the Department of Anesthesiology, Wexner Medical Center, The Ohio State University, Columbus, Ohio, USA
| | - Peter Kobalka
- Department of Pathology, Wexner Medical Center, The Ohio State University, Columbus, Ohio, USA
| | - Hesham Kelani
- From the Department of Anesthesiology, Wexner Medical Center, The Ohio State University, Columbus, Ohio, USA
| | - D Michele Basso
- Department of Neuroscience, School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, Ohio, USA
| | - John Bozinovski
- Division of Cardiac Surgery, Department of Surgery, Wexner Medical Center, The Ohio State University, Columbus, Ohio, USA
| | - Esmerina Tili
- From the Department of Anesthesiology, Wexner Medical Center, The Ohio State University, Columbus, Ohio, USA
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Huynh LM, Skarecky D, Porter J, Wagner C, Witt J, Wilson T, Lau C, Ahlering TE. A Randomized Control Trial Of Anti-Inflammatory Regional Hypothermia On Urinary Continence During Robot-Assisted Radical Prostatectomy. Sci Rep 2018; 8:16352. [PMID: 30397236 PMCID: PMC6218497 DOI: 10.1038/s41598-018-34657-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 10/05/2018] [Indexed: 12/16/2022] Open
Abstract
The present study seeks to present a single-blind, randomized control trial of a hypothermic anti-inflammatory device, the endorectal cooling balloon (ECB), to assess whether regional hypothermia could improve 90-day and time to pad-free continence following robot-assisted radical prostatectomy (RARP). Five high-volume surgeons at three institutions had patients randomized (1:1) to regional hypothermia with ECB versus control. Patients were blinded to device use, as it was inserted and removed intraoperatively. Knowledge of device use was restricted to the operating room personnel only; recovery room and ward nursing staff were not informed of device use and instructed to indicate such if a patient inquired. An independent and blinded data acquisition contractor assessed outcomes via components of the EPIC and IPSS. The primary outcome was categorical pad-free continence at 90-days and the secondary outcome was a Kaplan-Meier time-to pad-free continence at 90 days. 100 hypothermia and 99 control patients were included. The primary outcome of 90-day pad-free continence was 50.0% (27.8-70.0%) in the hypothermia group versus 59.2% (33.3-78.6%) in the control (p = 0.194). The secondary outcome of Kaplan Meier analysis for time to 90-day continence was not statistically significant. At one year, there were also no statistically significant differences in continence recovery. Post-hoc analysis revealed a trend towards improvement in continence in one of three sites. Overall, the trial demonstrated no benefit to regional hypothermia either in our primary or secondary outcomes. It is suggested that surgical technique and prevention of surgical trauma may be more advantageous to improving continence recovery.
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Affiliation(s)
- Linda M Huynh
- Department of Urology, University of California, Irvine, Orange, CA, USA
| | - Douglas Skarecky
- Department of Urology, University of California, Irvine, Orange, CA, USA
| | - James Porter
- Swedish Urology Group, Swedish Medical Center Seattle and Issaquah, Seattle, WA, USA
| | - Christian Wagner
- Urology Department, St. Antonius-Hospital Gronau GmbH, Westfalen, Germany
| | - Jorn Witt
- Urology Department, St. Antonius-Hospital Gronau GmbH, Westfalen, Germany
| | - Timothy Wilson
- Department of Urology, City of Hope National Medical Center, Duarte, CA, USA
| | - Clayton Lau
- Department of Urology, City of Hope National Medical Center, Duarte, CA, USA
| | - Thomas E Ahlering
- Department of Urology, University of California, Irvine, Orange, CA, USA.
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Mongardon N, Kohlhauer M, Lidouren F, Barretto M, Micheau P, Adam C, Dhonneur G, Ghaleh B, Tissier R. Targeted Temperature Management With Total Liquid Ventilation After Ischemic Spinal Cord Injury. Ann Thorac Surg 2018; 106:1797-1803. [PMID: 30120942 DOI: 10.1016/j.athoracsur.2018.06.073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 06/08/2018] [Accepted: 06/25/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND Ischemic spinal cord injury is a devastating condition after aortic surgery. We determined whether ultrafast and short whole-body hypothermia provided by total liquid ventilation (TLV) attenuated lower limb paralysis after aortic cross-clamping with a targeted temperature management at 33°C versus 36°C. METHODS Anesthetized rabbits were submitted to infrarenal aortic cross-clamping during 15 min. A control group (n = 7) was maintained at normothermia (38°C to 38.5°C) with conventional mechanical ventilation. In TLV groups, TLV was started after reperfusion and maintained during 30 min with a target temperature at either 33°C or 36°C (TLV-33°C and TLV-36°C, respectively; n = 7 in each condition). After TLV, animals were resumed to conventional ventilation. Hypothermia was maintained during 120 min, before rewarming and awakening. Hind limb motor function was assessed with modified Tarlov score at day 2 and infarct size in the spinal cord was determined using triphenyltetrazolium chloride staining. RESULTS Target temperature was achieved within 20 minutes in the two TLV groups. At day 2, the modified Tarlov score was significantly lower in the control group, as compared with TLV-33°C and TLV-36°C groups (0.0 ± 0.0 versus 3.1 ± 0.7 and 2.6 ± 0.6, respectively). The infarct size of the spinal cord was also significantly higher in the control group compared with TLV-33°C and TLV-36°C groups (75% ± 10% versus 32% ± 7% and 28% ± 10%, respectively). Neither motor function nor infarct size differed significantly between TLV-33°C and TLV-36°C groups. CONCLUSIONS Ultrafast hypothermic TLV attenuates spinal cord injury when applied after ischemic insult. Neurological outcome was similar with targeted temperature management at either 33°C or 36°C.
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Affiliation(s)
- Nicolas Mongardon
- Inserm, U955, Equipe 3, Créteil, France; Université Paris Est, UMR_S955, UPEC, DHU A-TVB, Créteil, France; Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France; Service d'Anesthésie-Réanimation, DHU A-TVB, Hôpitaux Universitaires Henri Mondor, Assistance Publique des Hôpitaux de Paris, Créteil, France
| | - Matthias Kohlhauer
- Inserm, U955, Equipe 3, Créteil, France; Université Paris Est, UMR_S955, UPEC, DHU A-TVB, Créteil, France; Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Fanny Lidouren
- Inserm, U955, Equipe 3, Créteil, France; Université Paris Est, UMR_S955, UPEC, DHU A-TVB, Créteil, France; Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Mariana Barretto
- Inserm, U955, Equipe 3, Créteil, France; Université Paris Est, UMR_S955, UPEC, DHU A-TVB, Créteil, France; Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | | | - Clovis Adam
- Service d'Anatomo-pathologie, Hôpital Bicêtre, Assistance Publique des Hôpitaux de Paris, Le Kremlin-Bicêtre, France
| | - Gilles Dhonneur
- Service d'Anesthésie-Réanimation, DHU A-TVB, Hôpitaux Universitaires Henri Mondor, Assistance Publique des Hôpitaux de Paris, Créteil, France
| | - Bijan Ghaleh
- Inserm, U955, Equipe 3, Créteil, France; Université Paris Est, UMR_S955, UPEC, DHU A-TVB, Créteil, France; Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Renaud Tissier
- Inserm, U955, Equipe 3, Créteil, France; Université Paris Est, UMR_S955, UPEC, DHU A-TVB, Créteil, France; Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France.
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Kang SK, Kang MW, Rhee YJ, Kim CS, Jeon BH, Han SJ, Cho HJ, Na MH, Yu JH. In Vivo Neuroprotective Effect of Histidine-Tryptophan-Ketoglutarate Solution in an Ischemia/Reperfusion Spinal Cord Injury Animal Model. THE KOREAN JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY 2016; 49:232-41. [PMID: 27525231 PMCID: PMC4981224 DOI: 10.5090/kjtcs.2016.49.4.232] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 11/29/2015] [Accepted: 12/01/2015] [Indexed: 11/25/2022]
Abstract
Background Paraplegia is a devastating complication following operations on the thoracoabdominal aorta. We investigated whether histidine-tryptophan-ketoglutarate (HTK) solution could reduce the extent of ischemia/reperfusion (IR) spinal cord injuries in a rat model using a direct delivery method. Methods Twenty-four Sprague-Dawley male rats were randomly divided into four groups. The sham group (n=6) underwent a sham operation, the IR group (n=6) underwent only an aortic occlusion, the saline infusion group (saline group, n=6) underwent an aortic occlusion and direct infusion of cold saline into the occluded aortic segment, and the HTK infusion group (HTK group, n=6) underwent an aortic occlusion and direct infusion of cold HTK solution into the occluded aortic segment. An IR spinal cord injury was induced by transabdominal clamping of the aorta distally to the left renal artery and proximally to the aortic bifurcation for 60 minutes. A neurological evaluation of locomotor function was performed using the modified Tarlov score after 48 hours of reperfusion. The spinal cord was harvested for histopathological and immunohistochemical examinations. Results The spinal cord IR model using direct drug delivery in rats was highly reproducible. The Tarlov score was 4.0 in the sham group, 1.17±0.75 in the IR group, 1.33±1.03 in the saline group, and 2.67±0.81 in the HTK group (p=0.04). The histopathological analysis of the HTK group showed reduced neuronal cell death. Conclusion Direct infusion of cold HTK solution into the occluded aortic segment may reduce the extent of spinal cord injuries in an IR model in rats.
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Affiliation(s)
- Shin Kwang Kang
- Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine
| | - Min-Woong Kang
- Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine
| | - Youn Ju Rhee
- Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine
| | - Cuk-Seong Kim
- Department of Physiology, Chungnam National University School of Medicine
| | - Byeong Hwa Jeon
- Department of Physiology, Chungnam National University School of Medicine
| | - Sung Joon Han
- Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine
| | - Hyun Jin Cho
- Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine
| | - Myung Hoon Na
- Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine
| | - Jae-Hyeon Yu
- Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine
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Liu SG, Ren PY, Wang GY, Yao SX, He XJ. Allicin protects spinal cord neurons from glutamate-induced oxidative stress through regulating the heat shock protein 70/inducible nitric oxide synthase pathway. Food Funct 2014; 6:321-30. [PMID: 25473931 DOI: 10.1039/c4fo00761a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Allicin, the main biologically active compound derived from garlic, exerts a broad spectrum of pharmacological activities and is considered to have therapeutic potential in many neurological disorders. Using an in vitro spinal cord injury model induced by glutamate treatment, we sought to investigate the neuroprotective effects of allicin in primary cultured spinal cord neurons. We found that allicin treatment significantly attenuated glutamate-induced lactate dehydrogenase (LDH) release, loss of cell viability and apoptotic neuronal death. This protection was associated with reduced oxidative stress, as evidenced by decreased reactive oxygen species (ROS) generation, reduced lipid peroxidation and preservation of antioxidant enzyme activities. The results of western blot analysis showed that allicin decreased the expression of inducible nitric oxide synthase (iNOS), but had no effects on the expression of neuronal NOS (nNOS) following glutamate exposure. Moreover, allicin treatment significantly increased the expression of heat shock protein 70 (HSP70) at both mRNA and protein levels. Knockdown of HSP70 by specific targeted small interfere RNA (siRNA) not only mitigated allicin-induced protective activity, but also partially nullified its effects on the regulation of iNOS. Collectively, these data demonstrate that allicin treatment may be an effective therapeutic strategy for spinal cord injury, and that the potential underlying mechanism involves HSP70/iNOS pathway-mediated inhibition of oxidative stress.
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Affiliation(s)
- Shu-Guang Liu
- Department of Orthopaedics, The Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China.
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The effects of physiological thermoregulation on the efficacy of surface cooling for therapeutic hypothermia. Med Biol Eng Comput 2014; 53:205-13. [DOI: 10.1007/s11517-014-1229-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 11/12/2014] [Indexed: 10/24/2022]
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Functional outcome after resuscitative endovascular balloon occlusion of the aorta of the proximal and distal thoracic aorta in a swine model of controlled hemorrhage. Ann Vasc Surg 2014; 29:114-21. [PMID: 25449984 DOI: 10.1016/j.avsg.2014.10.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 09/27/2014] [Accepted: 10/18/2014] [Indexed: 11/22/2022]
Abstract
BACKGROUND Noncompressible torso hemorrhage remains an ongoing problem for both military and civilian trauma. Resuscitative endovascular balloon occlusion of the aorta (REBOA) has been characterized as a potentially life-saving maneuver. The objective of this study was to determine the functional outcomes, paraplegia rates, and survival of 60-min balloon occlusion in the proximal and distal thoracic aorta in a porcine model of controlled hemorrhage. METHODS Swine (Sus scrofa, 70-110 kg) were subjected to class IV hemorrhagic shock and underwent 60 min of REBOA. Devices were introduced from the left carotid artery and positioned in the thoracic aorta in either the proximal location (pREBOA [n = 8]; just past takeoff of left subclavian artery) or distal location (dREBOA [n = 8]; just above diaphragm). After REBOA, animals were resuscitated with whole blood, crystalloid, and vasopressors before a 4-day postoperative period. End points included evidence of spinal cord ischemia (clinical examination, Tarlov gait score, bowel and bladder dysfunction, and histopathology), gross ischemia-reperfusion injury (clinical examination and histopathology), and mortality. RESULTS The overall mortality was similar between pREBOA and dREBOA groups at 37.5% (n = 3). Spinal cord-related mortality was 12.5% for both pREBOA and dREBOA groups. Spinal cord symptoms without death were present in 12.5% of pREBOA and dREBOA groups. Average gait scores improved throughout the postoperative period. CONCLUSIONS REBOA placement in the proximal or distal thoracic aorta does not alter mortality or paraplegia rates as compared with controlled hemorrhage alone. Functional recovery improves in the presence or the absence of REBOA, although at a slower rate after REBOA as compared with negative controls. Additional research is required to determine the ideal placement of REBOA in an uncontrolled hemorrhage model to achieve use compatible with survival outcomes and quality of life.
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Bradykinin preconditioning affects the number of degenerated neurons and the level of antioxidant enzymes in spinal cord ischemia in rabbits. Acta Histochem 2014; 116:252-7. [PMID: 23981244 DOI: 10.1016/j.acthis.2013.07.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Revised: 07/22/2013] [Accepted: 07/23/2013] [Indexed: 12/16/2022]
Abstract
Bradykinin preconditioning has been used for acquisition of tolerance after spinal cord ischemia. Rabbits were preconditioned intraperitoneally with bradykinin 48 h prior to 20 min of abdominal aorta ligation followed by 24 and 48 h of reperfusion. The activities of SOD and catalase were measured and Fluoro Jade B (FJB)-positive degenerated neurons were evaluated. The outcomes of Tarlov scoring system used to assess neurological functions showed significant improvement in bradykinin groups compared to the ischemic group. The number of FJB-positive degenerated neurons was decreased in ventral horns of both bradykinin groups. Significantly decreased activities of total SOD and mitochondrial Mn-SOD were also detected in both bradykinin groups versus ischemic group while CuZn-SOD and catalase activities were significantly decreased only in the bradykinin group after 24h of reperfusion versus ischemic group. These findings suggest that one of the possibilities of the neuroprotective effect of delayed bradykinin preconditioning against spinal cord ischemic injury could be realized by mitochondrial protection and decreased synthesis of Mn-SOD as well as by promotion of neuronal survival.
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Takahashi S, Isaka M, Hamaishi M, Imai K, Orihashi K, Sueda T. Trehalose protects against spinal cord ischemia in rabbits. J Vasc Surg 2013; 60:490-6. [PMID: 23958072 DOI: 10.1016/j.jvs.2013.06.078] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 06/26/2013] [Accepted: 06/29/2013] [Indexed: 11/28/2022]
Abstract
OBJECTIVE This study tested to see if trehalose, a cytoprotective disaccharide, protects against spinal cord ischemia in a rabbit model. METHODS The infrarenal aorta was mobilized in four groups of 10 rabbits. In groups I, II, and III, it was clamped proximally and distally for 20 minutes. In group I, the clamped aorta was infused at 2.5 L/min for 2 hours with lactated Ringer's (LR) solution. In group II, the clamped aorta was infused with 5% trehalose in LR. LR was administered intravenously (2.0 mL/min) in groups I and II starting 30 minutes before clamping. In group III, 5% trehalose in LR was infused intravenously only. Group IV was a sham-operated control group without aortic clamping. At 8, 24, and 48 hours after reperfusion, hind limb function was scored using the Tarlov score (paralysis = 0, perceptible joint movement = 1, good joint movement but unable to stand = 2, able to walk = 3, normal = 4). Histologic analysis and electron microscopy were performed on anterior horn cells. RESULTS The Tarlov scores in groups I, II, and III were, respectively, 1.1 ± 1.4, 3.5 ± 0.5, and 2.9 ± 0.9 at 8 hours; 0.8 ± 1.2, 3.9 ± 0.3, and 2.9 ± 0.9 at 24 hours; and 0.6 ± 0.7, 3.9 ± 0.3, and 2.7 ± 0.9 at 48 hours after reperfusion. Group IV scores were normal (4 ± 0) at all assessments. These scores were higher in groups II and III than in group I (P < .01) at all assessments. Scores at 24 and 48 hours were higher in group II than in group III (P < .05). In group III, delayed paraparesis developed in one rabbit at 24 hours and in two more at 48 hours. Histopathologic analysis showed the number of normal neurons was higher in groups II (P < .0001), III (P = .006), and IV (P < .0001) vs group I. Electron microscopy confirmed preserved neuronal cell ultrastructure in rabbits with normal limb function. CONCLUSIONS Transaortic trehalose infusion was protective against paraplegia, whereas intravenous trehalose reduced spinal cord ischemia. This study was preliminary and further studies are needed.
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Affiliation(s)
- Shinya Takahashi
- Department of Surgery, Division of Clinical Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan.
| | - Mitsuhiro Isaka
- Department of Surgery, Division of Clinical Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Makoto Hamaishi
- Department of Surgery, Division of Clinical Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Katsuhiko Imai
- Department of Surgery, Division of Clinical Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazumasa Orihashi
- Department of Surgery, Division of Clinical Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Taijiro Sueda
- Department of Surgery, Division of Clinical Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
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Mortazavi MM, Verma K, Tubbs RS, Theodore N. Non-pharmacological experimental treatments for spinal cord injury: a review. Childs Nerv Syst 2012; 28:2041-5. [PMID: 22890472 DOI: 10.1007/s00381-012-1889-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 08/03/2012] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Spinal cord injury is a complex result of primary mechanical damage and the secondary vascular compromise and inflammatory reactions. Depending on timing, different treatment modalities may have various effects. CONCLUSIONS We review the latest advances in terms of non-pharmacological experimental treatments.
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Affiliation(s)
- Martin M Mortazavi
- Department of Neurosurgery, Barrow Neurological Institute, Phoenix, AZ, USA
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12
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Liss MA, Skarecky D, Morales B, Ahlering TE. The application of regional hypothermia using transrectal cooling during radical prostatectomy: mitigation of surgical inflammatory damage to preserve continence. J Endourol 2012; 26:1553-7. [PMID: 23153199 DOI: 10.1089/end.2012.0345] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Preservation of continence and sexual function continues to be a formidable quality-of-life issue regarding outcomes after radical prostatectomy. There is little argument that physical preservation of the nerves and sphincters is a critical component to achieving success in these domains. Previously demonstrated factors such as advancing age, deteriorating physical health status, and subnormal baseline potency negatively impact outcomes. Our hypothesis, however, has been that inflammatory response to surgery has a large impact on surgical outcomes of prostatectomy. Trauma-induced inflammation could account for variation in recovery despite nearly identical surgery on many patients, especially in high-volume surgeons. In other words, we suggest and maintain that younger and healthier patients tolerate and/or recover better from the trauma/inflammation of surgery. Those who do not recover as well may have altered inflammatory response to injury. A common response to decrease inflammation in response to physical injury would be as simple as to cool the injury with ice. Previous neurologic studies have suggested that using ice during surgical intervention can reduce the inflammatory damage. Therefore, we applied this concept that preemptive hypothermia could reduce inflammation to the robot-assisted prostatectomy procedure to potentially lead to improved continence and potency outcomes. In 2009, we introduced the concept of regional hypothermia via an endorectal cooling balloon during robot-assisted radical prostatectomy (RARP). We have published our single institution data demonstrating a significant reduction of overall incontinence. Defining continence as zero-pads, our overall 1-year incontinence has been reduced by 70% (from 13% to 4%). Severe incontinence, defined as two or more pads, was likewise reduced by 70% (from 2.9% to 0.9%). Regional hypothermia used during the time of surgery represents a novel strategy for minimizing inflammation and subsequent muscle and nerve damage in RARP.
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Affiliation(s)
- Michael A Liss
- Department of Urology, University of California, Irvine, Orange, CA, USA.
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Awad H, Elgharably H, Popovich PG. Role of induced hypothermia in thoracoabdominal aortic aneurysm surgery. Ther Hypothermia Temp Manag 2012; 2:119-37. [PMID: 24716449 DOI: 10.1089/ther.2012.0009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
For more than 50 years, hypothermia has been used in aortic surgery as a tool for neuroprotection. Hypothermia has been introduced into thoracoabdominal aortic aneurysm (TAAA) surgery by many cardiovascular centers to protect the body's organs, including the spinal cord. Numerous publications have shown that hypothermia can prevent immediate and delayed motor dysfunction after aortic cross-clamping. Here, we reviewed the historical application of hypothermia in aortic surgery, role of hypothermia in preclinical studies, cellular and molecular mechanisms by which hypothermia confers neuroprotection, and the role of systemic and regional hypothermia in clinical protocols to reduce and/or eliminate the devastating consequences of ischemic spinal cord injury after TAAA repair.
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Affiliation(s)
- Hamdy Awad
- 1 Department of Anesthesiology, Wexner Medical Center at The Ohio State University , Columbus, Ohio
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Herlambang B, Orihashi K, Mizukami T, Takahashi S, Uchida N, Hiyama E, Sueda T. New method for absolute spinal cord ischemia protection in rabbits. J Vasc Surg 2011; 54:1109-16. [PMID: 21890303 DOI: 10.1016/j.jvs.2011.04.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Revised: 04/20/2011] [Accepted: 04/20/2011] [Indexed: 11/29/2022]
Abstract
OBJECTIVE This study aims to establish a superior procedure to prevent spinal cord damage after severe spinal cord ischemia during aortic surgery. We examined the synergistic effect of topical hypothermia of the spinal cord combined with radical scavenger infusion into the clamped segment of the aorta to prevent spinal cord damage in an animal model. METHODS Spinal cord ischemia was induced in rabbits by clamping the aorta between the renal artery and aortic bifurcation for 30 minutes. Rabbits were divided into four groups of 16 each: group I, sham-operated; group II, edaravone (6 mL, 4°C, 1 mg/kg); group III, saline (6 mL, 4°C) with transvertebral cooling pads; group IV, edaravone (6 mL, 4°C, 1 mg/kg) and transvertebral cooling pads. Solutions were injected into the clamped segment of the aorta. Postoperative assessments included the Tarlov score, spinal cord histopathology, and measurement of malondialdehyde levels in the spinal cord tissue. RESULTS At 48 hours after reperfusion, the mean Tarlov scores in groups I, II, III, and IV were 4.0, 1.5, 1.9, and 4.0, respectively. The mean number of normal motor neurons was significantly higher in groups I (54.1) and IV (53.7) than in groups II (32.8) and III (36.3; P < .001). The mean malondialdehyde level in groups I (19.8 nmol/mL) and IV (22.6 nmol/mL) was significantly lower than in groups II (64.8 nmol/mL) and III (60.9 nmol/mL; P < .001). At 168 hours after reperfusion, the mean Tarlov scores in groups I, II, III, and IV were 4.0, 1.1, 1.3, and 4.0, respectively. The mean number of normal motor neurons was significantly higher in groups I (52.9) and IV (50.8) than in groups II (22.4) and III (25.9; P < .001). The mean malondialdehyde level in groups I (20.7 nmol/mL) and IV (23.4 nmol/mL) was significantly lower than in groups II (68.9 nmol/mL) and III (61.6 nmol/mL; P < .001). CONCLUSION In a rabbit model with aortic clamping up to 30 minutes, which consistently produces complete paraplegia in rabbits, spinal cord damage was partially reduced by topical cooling with transvertebral cooling pads or the injection of edaravone into the clamped segment of aorta, but was more effectively protected by a combined use of these two strategies.
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Affiliation(s)
- Bagus Herlambang
- Department of Cardiovascular Surgery, Division of Clinical Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan.
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Moore EM, Nichol AD, Bernard SA, Bellomo R. Therapeutic hypothermia: benefits, mechanisms and potential clinical applications in neurological, cardiac and kidney injury. Injury 2011; 42:843-54. [PMID: 21481385 DOI: 10.1016/j.injury.2011.03.027] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2011] [Revised: 02/27/2011] [Accepted: 03/16/2011] [Indexed: 02/02/2023]
Abstract
Therapeutic hypothermia involves the controlled reduction of core temperature to attenuate the secondary organ damage which occurs following a primary injury. Clinicians have been increasingly using therapeutic hypothermia to prevent or ameliorate various types of neurological injury and more recently for some forms of cardiac injury. In addition, some recent evidence suggests that therapeutic hypothermia may also provide benefit following acute kidney injury. In this review we will examine the potential mechanisms of action and current clinical evidence surrounding the use of therapeutic hypothermia. We will discuss the ideal methodological attributes of future studies using hypothermia to optimise outcomes following organ injury, in particular neurological injury. We will assess the importance of target hypothermic temperature, time to achieve target temperature, duration of cooling, and re-warming rate on outcomes following neurological injury to gain insights into important factors which may also influence the success of hypothermia in other organ injuries, such as the heart and the kidney. Finally, we will examine the potential of therapeutic hypothermia as a future kidney protective therapy.
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Affiliation(s)
- Elizabeth M Moore
- Australian and New Zealand Intensive Care Research Centre, Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia.
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Baba H, Tanoue Y, Maeda T, Kobayashi M, Oda S, Tominaga R. Protective effects of cold spinoplegia with fasudil against ischemic spinal cord injury in rabbits. J Vasc Surg 2010; 51:445-52. [DOI: 10.1016/j.jvs.2009.10.081] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Revised: 09/24/2009] [Accepted: 10/04/2009] [Indexed: 11/15/2022]
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Theoretical evaluation of a simple cooling pad for inducing hypothermia in the spinal cord following traumatic injury. Med Biol Eng Comput 2009; 48:167-75. [DOI: 10.1007/s11517-009-0543-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2009] [Accepted: 09/27/2009] [Indexed: 01/17/2023]
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Finley DS, Osann K, Chang A, Santos R, Skarecky D, Ahlering TE. Hypothermic Robotic Radical Prostatectomy: Impact on Continence. J Endourol 2009; 23:1443-50. [DOI: 10.1089/end.2009.0411] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- David S. Finley
- Institute of Urologic Oncology, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Kathryn Osann
- Department of Medicine, University of California Irvine, Orange, California
| | - Alexandra Chang
- Department of Urology, University of California Irvine, Orange, California
| | - Rosanne Santos
- Department of Urology, University of California Irvine, Orange, California
| | - Douglas Skarecky
- Department of Urology, University of California Irvine, Orange, California
| | - Thomas E. Ahlering
- Department of Urology, University of California Irvine, Orange, California
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Peripheral nerve at extreme low temperatures 1: Effects of temperature on the action potential. Cryobiology 2009; 59:1-11. [DOI: 10.1016/j.cryobiol.2009.01.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2008] [Revised: 12/09/2008] [Accepted: 01/21/2009] [Indexed: 11/17/2022]
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Horiuchi T, Kawaguchi M, Kurita N, Inoue S, Nakamura M, Konishi N, Furuya H. The Long-Term Effects of Mild to Moderate Hypothermia on Gray and White Matter Injury After Spinal Cord Ischemia in Rats. Anesth Analg 2009; 109:559-66. [DOI: 10.1213/ane.0b013e3181aa96a1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Mechírová E, Domoráková I, Danková M, Danielisová V, Burda J. Effect of noradrenalin and EGb 761 pretreatment on the ischemia-reperfusion injured spinal cord neurons in rabbits. Cell Mol Neurobiol 2009; 29:991-8. [PMID: 19291391 DOI: 10.1007/s10571-009-9386-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2008] [Accepted: 02/27/2009] [Indexed: 01/07/2023]
Abstract
Short term sublethal ischemia or ischemic preconditioning gives protection to the neurons against subsequent lethal ischemic attack. This so-called ischemic tolerance can also be provided by certain drugs. We examined the effect of noradrenalin and EGb 761 on the spinal cord neurons injured by 30 min occlusion of abdominal aorta in rabbits. The animals survived 48 and 72 h. Degenerated neurons were visualized by Fluoro Jade B method, viable neurons were demonstrated immunohistochemically with NeuN and ubiquitin antibodies. The rabbits with noradrenalin administration 48 h before 30 min of ischemia and 48/72 h of reperfusion, showed significant increase of degenerated Fluoro Jade B labeled neurons. Animals of both groups were paraplegic. Rabbits pretreated 7 days with EGb 761 prior to 30 min of ischemia and with 48/72 h of reperfusion revealed significant decrease of Fluoro Jade B-positive neurons when compared with the groups with 30 min of ischemia followed by 48/72 h of reperfusion. In the NeuN sections, the number of viable neurons was moderately decreased. These animals showed no paraplegia. Ubiquitin aggregates occurred in the cytoplasm of degenerated neurons in the sections of rabbits preconditioned with noradrenalin 48 h prior to 30 min of ischemia and followed by 48 h of reperfusion while after 72 h of reperfusion, shrunk light shadows without ubiquitin reaction were visible. Our results indicate that EGb 761 could be involved in protection of spinal cord neurons against ischemic injury while effect of noradrenalin is not unambiguous.
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Affiliation(s)
- Eva Mechírová
- Department of Histology and Embryology, Faculty of Medicine, PJ Safárik University in Kosice, 04180 Kosice, Slovak Republic.
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Hamaishi M, Orihashi K, Isaka M, Kumagai H, Takahashi S, Okada K, Ohtaki M, Sueda T. Low-Dose Edaravone Injection into the Clamped Aorta Prevents Ischemic Spinal Cord Injury. Ann Vasc Surg 2009; 23:128-35. [DOI: 10.1016/j.avsg.2008.05.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2008] [Revised: 05/18/2008] [Accepted: 05/19/2008] [Indexed: 11/16/2022]
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Abstract
Increasing evidence suggests that induction of mild hypothermia (32-35 degrees C) in the first hours after an ischaemic event can prevent or mitigate permanent injuries. This effect has been shown most clearly for postanoxic brain injury, but could also apply to other organs such as the heart and kidneys. Hypothermia has also been used as a treatment for traumatic brain injury, stroke, hepatic encephalopathy, myocardial infarction, and other indications. Hypothermia is a highly promising treatment in neurocritical care; thus, physicians caring for patients with neurological injuries, both in and outside the intensive care unit, are likely to be confronted with questions about temperature management more frequently. This Review discusses the available evidence for use of controlled hypothermia, and also deals with fever control. Besides discussing the evidence, the aim is to provide information to help guide treatments more effectively with regard to timing, depth, duration, and effective management of side-effects. In particular, the rate of rewarming seems to be an important factor in establishing successful use of hypothermia in the treatment of neurological injuries.
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Affiliation(s)
- Kees H Polderman
- Department of Intensive Care, University Medical Center Utrecht, Utrecht, Netherlands.
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