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Shi M, Duan X, Zheng X, Lu D, Ge Y, Zhang N, Liu Y, You J, Xue H, Yin L. Quantification of human serum albumin by combining chymotrypsin/trypsin digestion coupled with LC-MS/MS technique. Anal Biochem 2023; 680:115316. [PMID: 37689095 DOI: 10.1016/j.ab.2023.115316] [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: 07/20/2023] [Revised: 09/04/2023] [Accepted: 09/06/2023] [Indexed: 09/11/2023]
Abstract
The quantification of albumin is important in clinical medicine because the concentration of albumin in biological fluids is closely related to human health. In this study, we developed a highly selective and robust assay to determine human serum albumin (HSA) in human plasma by combining chymotrypsin/trypsin digestion coupled with targeted LC-MS/MS technique. Human plasma samples were denatured, reduced, alkylated, and digested with both chymotrypsin and trypsin to generate surrogate peptides. A unique chymotryptic peptide (NAETF) arising from human serum albumin was finally selected for targeted LC-MS/MS detection and quantification. Numerous parameters related to the targeted LC-MS/MS assay were evaluated, including lower limit of quantitation (LLOQ), linearity range, enzyme digestion efficiency, accuracy and precision. The LC-MS/MS assay was linear in the concentration range 0.05-1 mg/mL with intra-day and inter-day precision <10.2% and accuracy ranging from -3.94% to 4.89%. The assay was successfully applied to determine HSA in 148 human plasma samples.
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Affiliation(s)
- Meiyun Shi
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China; Aim Honesty Biopharmaceutical Co. LTD, Dalian, 116600, PR China
| | - Xujian Duan
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China
| | - Xinyue Zheng
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China
| | - Di Lu
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China
| | - Yuncheng Ge
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China
| | - Ning Zhang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China
| | - Yajun Liu
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China
| | - Jiansong You
- Aim Honesty Biopharmaceutical Co. LTD, Dalian, 116600, PR China
| | - Hongyu Xue
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China.
| | - Lei Yin
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China.
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Ali A, Rajeswaran AB, Shaikh N, Al-Rumaihi G, Al-Sulaiti G. Role of albumin-induced volume expansion therapy for cerebral vasospasm in aneurysmal subarachnoid hemorrhage: A systematic review. J Neurosci Rural Pract 2023; 14:582-590. [PMID: 38059246 PMCID: PMC10696353 DOI: 10.25259/jnrp_372_2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 09/04/2023] [Indexed: 12/08/2023] Open
Abstract
Objectives This study reviews the effect of albumin-induced volume expansion therapy on symptomatic vasospasm and clinical outcome in aneurysmal subarachnoid hemorrhage (aSAH). Materials and Methods Computer searches carried out from the Scopus, Medline, Embase, Web of Science, the Cochrane Library, and Internet documents; hand searching of medical journals; and review of reference lists. Randomized controlled trials (RCT) and observational studies (OSs) comparing albumin therapy in combination or alone with crystalloid therapy for the treatment of cerebral vasospasm in aSAH were included in the study. Risk-of-bias assessment was conducted using ROB2.0 and ROBINS-I tools for RCTs and Oss, respectively. Results Out of a total of 1078 searches, one RCT (published in two articles) and one observational (retrospective) study were included for final analysis. In RCT, albumin was used for volume expansion therapy with a baseline crystalloid regime and comparison made between hypervolemic and normovolemic groups and it showed no beneficial effects on symptomatic vasospasm and clinical outcomes based on the Glasgow outcome scale. Furthermore, the use of albumin showed a tendency for sodium retention with lowering of glomerular filtration rate, limiting the amount of total fluid required for targeted central venous pressure values, and thereby avoiding fluid overload manifestations. The retrospective study results between albumin versus non-albumin groups (crystalloids only) supported improved outcomes in the former group with lower in-hospital mortality. Cardiorespiratory complications were equivocal in RCT and increased in non-albumin group in the retrospective study. Risk-of-bias assessment analyses revealed "some concerns" in RCT and "serious" limitation in OS due to its retrospective design. Conclusion Albumin-induced volume expansion therapy for cerebral vasospasm does not have substantiative evidence to improve cerebral vasospasm and clinical outcomes in aSAH. Studies with well-designed RCTs are required to compare the use of albumin for volume expansion therapy versus standard fluid management using crystalloids to mitigate the scarcity of published data.
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Affiliation(s)
- Arshad Ali
- Department of Neurosurgery, Neuroscience Institute, Hamad Medical Corporation, Doha, Qatar
| | - Arun Babu Rajeswaran
- Department of Neurosurgery, Sheikh Khalifa Medical City, Abu Dhabi, United Arab Emirates
| | - Nisar Shaikh
- Surgical Intensive Care Unit, Hamad Medical Corporation, Doha, Qatar
| | - Ghaya Al-Rumaihi
- Department of Neurosurgery, Neuroscience Institute, Hamad Medical Corporation, Doha, Qatar
| | - Ghanem Al-Sulaiti
- Department of Neurosurgery, Neuroscience Institute, Hamad Medical Corporation, Doha, Qatar
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de Oliveira Manoel AL, van der Jagt M, Amin-Hanjani S, Bambakidis NC, Brophy GM, Bulsara K, Claassen J, Connolly ES, Hoffer SA, Hoh BL, Holloway RG, Kelly AG, Mayer SA, Nakaji P, Rabinstein AA, Vajkoczy P, Vergouwen MDI, Woo H, Zipfel GJ, Suarez JI. Common Data Elements for Unruptured Intracranial Aneurysms and Aneurysmal Subarachnoid Hemorrhage: Recommendations from the Working Group on Hospital Course and Acute Therapies-Proposal of a Multidisciplinary Research Group. Neurocrit Care 2020; 30:36-45. [PMID: 31119687 DOI: 10.1007/s12028-019-00726-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
INTRODUCTION The Common Data Elements (CDEs) initiative is a National Institute of Health/National Institute of Neurological Disorders and Stroke (NINDS) effort to standardize naming, definitions, data coding, and data collection for observational studies and clinical trials in major neurological disorders. A working group of experts was established to provide recommendations for Unruptured Aneurysms and Aneurysmal Subarachnoid Hemorrhage (SAH) CDEs. METHODS This paper summarizes the recommendations of the Hospital Course and Acute Therapies after SAH working group. Consensus recommendations were developed by assessment of previously published CDEs for traumatic brain injury, stroke, and epilepsy. Unruptured aneurysm- and SAH-specific CDEs were also developed. CDEs were categorized into "core", "supplemental-highly recommended", "supplemental" and "exploratory". RESULTS We identified and developed CDEs for Hospital Course and Acute Therapies after SAH, which included: surgical and procedure interventions; rescue therapy for delayed cerebral ischemia (DCI); neurological complications (i.e. DCI; hydrocephalus; rebleeding; seizures); intensive care unit therapies; prior and concomitant medications; electroencephalography; invasive brain monitoring; medical complications (cardiac dysfunction; pulmonary edema); palliative comfort care and end of life issues; discharge status. The CDEs can be found at the NINDS Web site that provides standardized naming, and definitions for each element, and also case report form templates, based on the CDEs. CONCLUSION Most of the recommended Hospital Course and Acute Therapies CDEs have been newly developed. Adherence to these recommendations should facilitate data collection and data sharing in SAH research, which could improve the comparison of results across observational studies, clinical trials, and meta-analyses of individual patient data.
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Affiliation(s)
- Airton Leonardo de Oliveira Manoel
- Neuroscience Research Program in the Keenan Research Centre for Biomedical Science of St. Michael's Hospital, University of Toronto, Toronto, Canada. .,Adult Critical Care Unit, Department of Critical Care Medicine, Hospital Paulistano - UnitedHealth Group Brazil, Rua Martiniano de Carvalho, 741, Bela Vista, São Paulo, SP, 01321-001, Brazil.
| | - Mathieu van der Jagt
- Department of Intensive Care Adults, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | | | - Nicholas C Bambakidis
- Department of Neurological Surgery, UH Cleveland Medical Center, Case Western Reserve University, Cleveland, OH, USA
| | - Gretchen M Brophy
- Department of Pharmacotherapy and Outcomes Science, School of Pharmacy, Richmond, VA, USA
| | - Ketan Bulsara
- Department of Neurosurgery, University of Connecticut, Farmington, CT, USA
| | | | | | - S Alan Hoffer
- Department of Neurological Surgery, UH Cleveland Medical Center, Case Western Reserve University, Cleveland, OH, USA
| | - Brian L Hoh
- Department of Neurosurgery, University of Florida, Gainesville, FL, USA
| | - Robert G Holloway
- Department of Neurology, University of Rochester, Rochester, NY, USA
| | - Adam G Kelly
- Department of Neurology, University of Rochester, Rochester, NY, USA
| | - Stephan A Mayer
- Department of Neurology, Henry Ford Health System, Detroit, MI, USA
| | - Peter Nakaji
- Department of Neurosurgery, Barrow Neurological Institute, Phoenix, AZ, USA
| | | | - Peter Vajkoczy
- Department of Neurosurgery, Charite Hospital, Universitatsmedizin, Berlin, Germany
| | - Mervyn D I Vergouwen
- Brain Center Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Henry Woo
- Department of Neurosurgery and Radiology, Zucker School of Medicine at Hofstra/Northwell Health, New York, NY, USA
| | | | - Jose I Suarez
- Departments of Anesthesiology and Critical Care Medicine, Neurology, and Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, USA
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Hänggi D, Etminan N, Macdonald RL, Steiger HJ, Mayer SA, Aldrich F, Diringer MN, Hoh BL, Mocco J, Strange P, Faleck HJ, Miller M. NEWTON: Nimodipine Microparticles to Enhance Recovery While Reducing Toxicity After Subarachnoid Hemorrhage. Neurocrit Care 2016; 23:274-84. [PMID: 25678453 DOI: 10.1007/s12028-015-0112-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Aneurysmal subarachnoid hemorrhage (aSAH) is associated with high morbidity and mortality. EG-1962 is a sustained-release microparticle formulation of nimodipine that has shown preclinical efficacy when administered intraventricularly or intracisternally to dogs with SAH, without evidence of toxicity at doses in the anticipated therapeutic range. Thus, we propose to administer EG-1962 to humans in order to assess safety and tolerability and determine a dose to investigate efficacy in subsequent clinical studies. METHODS We describe a Phase 1/2a multicenter, controlled, randomized, open-label, dose escalation study to determine the maximum tolerated dose (MTD) and assess the safety and tolerability of EG-1962 in patients with aSAH. The study will comprise two parts: a dose escalation period (Part 1) to determine the MTD of EG-1962 and a treatment period (Part 2) to assess the safety and tolerability of the selected dose of EG-1962. Patients with a ruptured saccular aneurysm treated by neurosurgical clipping or endovascular coiling will be considered for enrollment. Patients will be randomized to receive either EG-1962 (study drug: nimodipine microparticles) or oral nimodipine in the approved dose regimen (active control) within 60 h of aSAH. RESULTS Primary objectives are to determine the MTD and the safety and tolerability of the selected dose of intraventricular EG-1962 as compared to enteral nimodipine. The secondary objective is to determine release and distribution by measuring plasma and CSF concentrations of nimodipine. Exploratory objectives are to determine the incidence of delayed cerebral infarction on computed tomography, clinical features of delayed cerebral ischemia, angiographic vasospasm, and incidence of rescue therapy and clinical outcome. Clinical outcome will be determined at 90 days after aSAH using the extended Glasgow outcome scale, modified Rankin scale, Montreal cognitive assessment, telephone interview of cognitive status, and Barthel index. CONCLUSION Here, we describe a Phase 1/2a multicenter, controlled, randomized, open-label, dose escalation study to determine the MTD and assess the safety and tolerability of EG-1962 in patients with aSAH.
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Affiliation(s)
- Daniel Hänggi
- Department of Neurosurgery, Medical Faculty, Heinrich-Heine-University, Moorenstraße 5, 40225, Düsseldorf, Germany,
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Ibrahim GM, Macdonald RL. The network topology of aneurysmal subarachnoid haemorrhage. J Neurol Neurosurg Psychiatry 2015; 86:895-901. [PMID: 25280913 DOI: 10.1136/jnnp-2014-308992] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 09/05/2014] [Indexed: 11/04/2022]
Abstract
OBJECTIVE Network analysis is an emerging tool for the study of complex systems. In the current report, the cascade of physiological and neurological changes following aneurysmal subarachnoid haemorrhage (SAH) was modelled as a complex system of interacting parameters. Graph theoretical analysis was then applied to identify parameters at critical topological junctions of the network, which may represent the most effective therapeutic targets. METHODS Correlation matrices were calculated using a combination of Pearson, polyserial and polychoric regressions among 50 variables collected from 120 participants (38 male; mean age 51 years) included in the CONSCIOUS-1 trial. Graph theoretical analysis was performed to identify important topological features within the network formed by the interactions among these variables. Non-parametric resampling was applied to determine thresholds for significance. RESULTS Several critical network hubs were identified, including the incidence of delayed ischaemic neurological deficit (DIND), anaemia and hypoalbuminaemia/hypoproteinaemia. While not significant hubs, World Federation of Neurosurgical Societies (WFNS) score and use of rescue therapy had widespread connections within the network. Patient sex and history of hypertension also strongly clustered with other variables. A subnetwork (module) was also identified, which was related to neurological outcomes including WFNS score, angiographic vasospasm, DIND, use of rescue therapy and hydrocephalus. INTERPRETATION Using graph theoretical analysis, we identify critical network topologies following SAH, which may serve as useful therapeutic targets. Importantly, we demonstrate that network analysis is a robust method to model complex interactions following SAH. TRIAL REGISTRATION NUMBER URL: http://www.clinicaltrials.gov; Identifier: NCT00111085.
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Affiliation(s)
- George M Ibrahim
- Division of Neurosurgery, St. Michael's Hospital, Labatt Family Centre of Excellence in Brain Injury and Trauma Research, Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, Ontario, Canada Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - R Loch Macdonald
- Division of Neurosurgery, St. Michael's Hospital, Labatt Family Centre of Excellence in Brain Injury and Trauma Research, Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, Ontario, Canada Department of Surgery, University of Toronto, Toronto, Ontario, Canada
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Effect of human albumin on TCD vasospasm, DCI, and cerebral infarction in subarachnoid hemorrhage: the ALISAH study. ACTA NEUROCHIRURGICA. SUPPLEMENT 2015; 120:287-90. [PMID: 25366638 DOI: 10.1007/978-3-319-04981-6_48] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
BACKGROUND AND PURPOSE The neuroprotective effects of human albumin have been studied in animal models of stroke and in humans with various intracranial disorders. We investigated the effect of 25 % human albumin (ALB) on mean cerebral blood flow velocities (MCBFV), delayed cerebral ischemia (DCI), and cerebral infarction. METHODS We studied patients from the Albumin in Subarachnoid Hemorrhage (ALISAH) pilot clinical trial. We collected data on MCBFV as measured by transcranial Doppler ultrasound (TCD), incidence of DCI, and cerebral infarctions on head computed tomography (CT) scan at 90 days. RESULTS TCD showed vasospasm in 75 % (n = 15), 55 % (n = 11), and 29 % (n = 2) of subjects in dosage tiers 1, 2, and 3, respectively. DCI was present in 20 % (n = 4), 15 % (n = 3), and 14 % (n = 1) of subjects in dosage tiers 1, 2, and 3, respectively. Cerebral infarctions were seen in 45 % (5 of 9), 27 % (3 of 18), and 25 % (1 of 4) of subjects who had follow-up head CT scans in dosage tiers 1, 2, and 3, respectively. CONCLUSIONS Higher dosages of ALB were associated with a lower incidence of TCD vasospasm, DCI, and cerebral infarction at 90 days in a dose-dependent manner.
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Suarez JI, Martin RH, Calvillo E, Zygun D, Flower O, Wong GK, Bershad EM, Venkatasubba Rao CP, Georgiadis A, Jichici D, Leroux PD. Human albumin administration in subarachnoid hemorrhage: results of an international survey. Neurocrit Care 2014; 20:277-86. [PMID: 24378920 DOI: 10.1007/s12028-013-9942-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
BACKGROUND Subarachnoid hemorrhage (SAH) is a devastating disease. Nimodipine is the only medical treatment shown to improve outcome of SAH patients. Human albumin (ALB) may exert neuroprotection in SAH. However, current usage of ALB in SAH is not known. We conducted an international survey of clinicians involved in the care of SAH patients to determine current practice of ALB administration in SAH. METHODS We constructed a 27-question survey. Our sampling frame consisted of neurointensivists, general intensivists, neurocritical care nurses, critical care pharmacists, and neurosurgeons. The survey was available from 11/15/2012 to 12/15/2012. We performed mostly descriptive statistical analysis. RESULTS We obtained 362 responses from a diverse range of world regions. Most respondents were intensivist physicians (88 %), who worked in academic institutions (73.5 %) with a bed capacity >500 (64.1 %) and an established institutional management protocol for SAH patients (70.2 %). Most respondents (83.5 %) indicated that their institutions do not incorporate ALB in their protocol, but half of them (45.9 %) indicated using ALB outside it. ALB administration is influenced by several factors: geographic variation (more common among US respondents); institutions with a dedicated neuroICU; and availability of SAH management protocol. Most respondents (75 %) indicated that a clinical trial to test the efficacy of ALB in SAH is needed. CONCLUSIONS In this survey we found that ALB administration in SAH patients is common and influenced by several factors. Majority of respondents support a randomized clinical trial to determine the safety and efficacy of ALB administration in SAH patients.
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Affiliation(s)
- Jose I Suarez
- Division of Vascular Neurology and Neurocritical Care, Department of Neurology, Baylor College of Medicine, 1 Baylor Plaza, NB:320, Houston, TX, 77030, USA,
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Brathwaite S, Macdonald RL. Current management of delayed cerebral ischemia: update from results of recent clinical trials. Transl Stroke Res 2013; 5:207-26. [PMID: 24338266 DOI: 10.1007/s12975-013-0316-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 11/23/2013] [Accepted: 11/29/2013] [Indexed: 01/19/2023]
Abstract
Subarachnoid hemorrhage (SAH) accounts for 5-7% of all strokes worldwide and is associated with high mortality and morbidity. Even after surgical intervention, approximately 30% of patients develop long-term cognitive and neurological deficits that significantly affect their capacity to return to work or daily life unassisted. Much of this stems from a secondary ischemic phenomenon referred to as delayed cerebral ischemia (DCI). While DCI has been historically attributed to the narrowing of the large basal cerebral arteries, it is now recognized that numerous pathways contribute to its pathogenesis, including microcirculatory dysfunction, microthrombosis, cortical spreading depression, and early brain injury. This paper seeks to summarize some of the key pathophysiological events that are associated with poor outcome after SAH, provide a general overview of current methods of treating SAH patients, and review the results of recent clinical trials directed at improving outcome after SAH. The scientific basis of these studies will be discussed, in addition to the available results and recommendations for effective patient management. Therapeutic methods under current clinical investigation will also be addressed. In particular, the mechanisms by which they are expected to elicit improved outcome will be investigated, as well as the specific study designs and anticipated time lines for completion.
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Affiliation(s)
- Shakira Brathwaite
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, 30 Bond Street, Toronto, Ontario, Canada, M5B 1W8
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Abstract
PURPOSE OF REVIEW Cerebral vasospasm (CVS) after aneurysmal subarachnoid hemorrhage remains a considerable challenge in neurocritical care medicine. This review aims to cover the recent novel aspects and results in CVS treatment. RECENT FINDINGS On the basis of the recent literature, treatment focusing on CVS alone is outdated. A considerable amount of evidence suggests CVS not to be the sole cause of delayed cerebral ischemia (DCI) and poor outcome. Early brain injury, cortical spreading depolarization, inflammation and microthrombosis have recently been discussed as additional factors. The results of a well designed phase III trial, using an endothelin-1 antagonist, indicated a decrease in the occurrence of CVS but did not change the clinical outcome significantly. Induced hypertension is currently recommended for treating suspected DCI, whereas hemodilution and hypervolemia are not. Endovascular intervention is only recommended in case of refractory symptomatic CVS. A couple of newer treatment strategies are under evaluation. Phase III trials are underway for magnesium sulfate and statins. Clinical trials aiming specifically at recently discussed factors other than CVS have not been reported. SUMMARY Reviewing the recent literature, there have been some updates on recommendations and newer treatment modalities are under evaluation. However, a novel treatment with convincing evidence has not been reported so far.
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Suarez JI, Martin RH, Calvillo E, Dillon C, Bershad EM, Macdonald RL, Wong J, Harbaugh R. The Albumin in Subarachnoid Hemorrhage (ALISAH) multicenter pilot clinical trial: safety and neurologic outcomes. Stroke 2012; 43:683-90. [PMID: 22267829 PMCID: PMC3288646 DOI: 10.1161/strokeaha.111.633958] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Human albumin has been shown to exert neuroprotective effects in animal models of cerebral ischemia and humans with various intracranial pathologies. We investigated the safety and tolerability of 25% human albumin in patients with subarachnoid hemorrhage. METHODS The Albumin in Subarachnoid Hemorrhage (ALISAH) Pilot Clinical Trial was an open-label, dose-escalation study. We intended to study 4 different dosages of albumin of increasing magnitude (0.625 g/kg: Tier 1; 1.25 g/kg: Tier 2; 1.875 g/kg: Tier 3; and 2.5 g/kg: Tier 4). Each dosage was to be given to 20 adult patients. Treatment was administered daily for 7 days. We investigated the maximum tolerated dose of albumin based on the rate of severe-to-life-threatening heart failure and anaphylactic reaction and functional outcome at 3 months. RESULTS We treated 47 adult subjects: 20 in Tier 1; 20 in Tier 2; and 7 in Tier 3. We found that doses ranging up to 1.25 g/kg/day×7 days were tolerated by patients without major dose-limiting complications. We also found that outcomes trended toward better responses in those subjects enrolled in Tier 2 compared with Tier 1 (OR, 3.0513; CI, 0.6586-14.1367) and with the International Intraoperative Hypothermia for Aneurysm Surgery Trial cohort (OR, 3.1462; CI, 0.9158-10.8089). CONCLUSIONS Albumin in doses ranging up to 1.25 g/kg/day×7 days was tolerated by patients with subarachnoid hemorrhage without major complications and may be neuroprotective. Based on these results, planning of the ALISAH II, a Phase III, randomized, placebo-controlled trial to test the efficacy of albumin, is underway. CLINICAL TRIAL REGISTRATION URL: http://clinicaltrials.gov. Unique identifier: NCT00283400.
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Affiliation(s)
- Jose I Suarez
- Department of Neurology, Baylor College of Medicine, 6501 Fannin Street, NB 302, Houston, TX 77030, USA.
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High-Dose Albumin for Neuroprotection in Acute Ischemic Stroke: From Basic Investigations to Multicenter Clinical Trial. Transl Stroke Res 2012. [DOI: 10.1007/978-1-4419-9530-8_34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Castanares-Zapatero D, Hantson P. Pharmacological treatment of delayed cerebral ischemia and vasospasm in subarachnoid hemorrhage. Ann Intensive Care 2011; 1:12. [PMID: 21906344 PMCID: PMC3224484 DOI: 10.1186/2110-5820-1-12] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2011] [Accepted: 05/24/2011] [Indexed: 12/18/2022] Open
Abstract
Subarachnoid hemorrhage after the rupture of a cerebral aneurysm is the cause of 6% to 8% of all cerebrovascular accidents involving 10 of 100,000 people each year. Despite effective treatment of the aneurysm, delayed cerebral ischemia (DCI) is observed in 30% of patients, with a peak on the tenth day, resulting in significant infirmity and mortality. Cerebral vasospasm occurs in more than half of all patients and is recognized as the main cause of delayed cerebral ischemia after subarachnoid hemorrhage. Its treatment comprises hemodynamic management and endovascular procedures. To date, the only drug shown to be efficacious on both the incidence of vasospasm and poor outcome is nimodipine. Given its modest effects, new pharmacological treatments are being developed to prevent and treat DCI. We review the different drugs currently being tested.
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Affiliation(s)
- Diego Castanares-Zapatero
- Université catholique de Louvain (UCL), Cliniques universitaires Saint Luc, Soins intensifs, Avenue Hippocrate, 10, B-1200 Bruxelles, Belgium.
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