LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 32

Search options

  1. Article ; Online: Transplantation of kidneys after normothermic perfusion: A single center experience.

    Pearson, Robert / Geddes, Colin / Mark, Patrick / Clancy, Marc / Asher, John

    Clinical transplantation

    2021  Volume 35, Issue 10, Page(s) e14431

    Abstract: Background: In order to expand the pool of usable donors from circulatory death (DCD) there is increasing interest in normothermic regional perfusion (NRP) to assess and improve liver viability.: Methods: Data was obtained from a prospectively ... ...

    Abstract Background: In order to expand the pool of usable donors from circulatory death (DCD) there is increasing interest in normothermic regional perfusion (NRP) to assess and improve liver viability.
    Methods: Data was obtained from a prospectively maintained database between December 2012 and September 2018. Primary endpoints were incidence of delayed graft function (DGF) and estimated glomerular filtration rate (eGFR).
    Results: Six-hundred and thirty-two decease donor kidneys were transplanted, 229 from DCD donors, 29 of which had NRP. The DGF rate was lower for NRP versus DCD (six of 29, 20.7% vs. 70 of 200, 35.0%) with reduced duration of DGF. Multivariate analysis demonstrated transplant type to be a statistically significant independent predictor of eGFR at 7 and 14 days. Early transplant function in NRP kidneys was comparable to DBD. There were no graft losses within 30 days in the NRP group. One-year graft loss rate was 3.4% for NRP and 6.0% for standard DCD.
    Conclusion: This data suggests NRP is safe, and reduces rates of DGF and improves early renal transplant function.
    MeSH term(s) Delayed Graft Function/etiology ; Graft Survival ; Humans ; Kidney ; Organ Preservation ; Perfusion ; Tissue Donors
    Language English
    Publishing date 2021-08-03
    Publishing country Denmark
    Document type Journal Article
    ZDB-ID 639001-8
    ISSN 1399-0012 ; 0902-0063
    ISSN (online) 1399-0012
    ISSN 0902-0063
    DOI 10.1111/ctr.14431
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: The New UK National Kidney Allocation Scheme With Maximized "R4-D4" Kidney Transplants: Better Patient-to-Graft Longevity Matching May Be at the Cost of More Resources.

    Pearson, Robert / Murray, Eleanor / Thomson, Peter C / Mark, Patrick B / Clancy, Marc J / Asher, John

    Experimental and clinical transplantation : official journal of the Middle East Society for Organ Transplantation

    2021  Volume 19, Issue 11, Page(s) 1133–1141

    Abstract: Objectives: A new kidney matching scheme for allocation of deceased donor kidneys for transplantation was introduced in the United Kingdom in September 2019. Donors and recipients are stratified into quartiles derived from demographic and retrieval ... ...

    Abstract Objectives: A new kidney matching scheme for allocation of deceased donor kidneys for transplantation was introduced in the United Kingdom in September 2019. Donors and recipients are stratified into quartiles derived from demographic and retrieval indices associated with risk of adverse outcome. We present data on 2 years of transplants, with the aim of understanding the potential impacts ofthe scheme on patient/transplant outcomes, hospitalization, and resource utilization.
    Materials and methods: All deceased donortransplants from 2015 and 2016 were reclassified using the risk quartiles (D1-D4 for donor and R1-R4 for recipient, where 4 is highestrisk). Inpatientlength of stay, kidney function defined by estimated glomerular rate at 1 year, and patient survival data were collected.
    Results: Of the 195 deceased donor transplants analyzed, 144 recipients (73.4%) were in the highest risk R4 category, including 55 with R4-D4 combination (28.1%). Recipients in the R4 category had longer index admissions (mean of 12.4 vs 8.1 days for R1-R3; P = .002) and higher subsequent admission rates 90 days posttransplant(185.7 vs 122.7/1000 patient days for R1-R3; P < .001). Kidney transplant function at 1 year was lower for grafts categorized as D4 (mean estimated glomerular filtration rate of 35.7 vs 54.8 mL/min/1.73 m2 for D1-D3; P < .001). However, survival for R4 recipients with D4 kidneys was not significantly differentfrom R4 recipients with D1 to D3 kidneys (4-year patient survival rate with R4-D4 combination was 90.9%).
    Conclusions: The principles ofthe allocation scheme in matching graft and patient survival were already largely being observed (matching higher risk deceased donor kidneys to higher risk recipients). However, an increase in D4 proportions in the R4 group may be associated with longer hospitalization posttransplant. Consideration should be given to mitigation strategies to address this. Despite poorer graft function, patient survival appears satisfactory.
    MeSH term(s) Female ; Graft Survival ; Humans ; Kidney/surgery ; Kidney Transplantation/adverse effects ; Registries ; Tissue Donors ; Treatment Outcome ; United Kingdom
    Language English
    Publishing date 2021-11-23
    Publishing country Turkey
    Document type Journal Article
    ZDB-ID 2396778-X
    ISSN 2146-8427 ; 1304-0855
    ISSN (online) 2146-8427
    ISSN 1304-0855
    DOI 10.6002/ect.2021.0129
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article: Memory Impairment Allied to Temporal Lobe Epilepsy and its Deterioration by Phenytoin: A Highlight on Ameliorative Effects of Levetiracetam in Mouse Model

    Mohan, Asher John / Krishna, Kamsagara Linganna

    International Journal of Epilepsy

    2018  Volume 05, Issue 01, Page(s) 19–27

    Abstract: Background/Objectives: Memory impairment (MI) and epilepsy go hand in hand, mainly in conditions of temporal lobe epilepsy (TLE). This disease comorbidity has been reported to worsen upon treatment. Hence this study aims to evaluate the extent of ... ...

    Abstract Background/Objectives: Memory impairment (MI) and epilepsy go hand in hand, mainly in conditions of temporal lobe epilepsy (TLE). This disease comorbidity has been reported to worsen upon treatment. Hence this study aims to evaluate the extent of aggravating effect of phenytoin (PHT) at normal and reduced doses on MI associated with TLE and additionally assesses the protective effect of levetiracetam (LEV) on these adverse effects.
    Methods: Swiss albino mice of either sex ( n = 36) were used for this study in which seizures were induced by intraperitoneal administration of pilocarpine (300 mg/kg i.p.) followed by evaluation of antiepileptic activity by technique of Racine's scale for convulsive scores. Errors (a factor denoting MI) were assessed using radial arm maze. Finally brain biochemical measures of acetylcholinesterase and glutamate along with cresyl violet staining and estimation of total neuronal number of the hippocampus were performed.
    Results: Exacerbation of MI by PHT was observed, where the extent of MI was found to be lesser in the reduced dose approach (PHTR: 28.50 ± 1.03; p ≤ 0.05). However, this tactic in dose reduction was interfered with the antiepileptic potential of the drug. Attenuation of MI upon combining with LEV, without an interference in the principal treatment, was observed equally in the behavioral and brain aspects of the study (PHTN + LEV: 1.33 ± 0.33 and PHTR + LEV: 1.00 ± 0.17; p ≤ 0.05).
    Conclusions: The promising effects of LEV could thus aid in proposing a new management remedy for TLE to minimize the adverse effect associated with it.
    Keywords pilocarpine ; phenytoin ; levetiracetam ; antiepileptic drugs
    Language English
    Publishing date 2018-04-01
    Publisher Thieme Medical and Scientific Publishers Private Ltd.
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 2772834-1
    ISSN 2213-6339 ; 2213-6320 ; 2213-6339
    ISSN (online) 2213-6339
    ISSN 2213-6320 ; 2213-6339
    DOI 10.1055/s-0038-1656714
    Database Thieme publisher's database

    More links

    Kategorien

  4. Article ; Online: Viability assessment and utilization of declined donor kidneys with rhabdomyolysis using ex vivo normothermic perfusion without preimplantation biopsy.

    Pearson, Robert / Asher, John / Jackson, Andrew / Mark, Patrick B / Shumeyko, Vlad / Clancy, Marc J

    American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons

    2020  Volume 21, Issue 3, Page(s) 1317–1321

    Abstract: The role of ex vivo normothermic perfusion (EVNP) in both organ viability assessment and reconditioning is increasingly being demonstrated. We report the use of this emerging technology to facilitate the transplantation of a pair of donor kidneys with ... ...

    Abstract The role of ex vivo normothermic perfusion (EVNP) in both organ viability assessment and reconditioning is increasingly being demonstrated. We report the use of this emerging technology to facilitate the transplantation of a pair of donor kidneys with severe acute kidney injury (AKI) secondary to rhabdomyolysis. Donor creatinine was 10.18 mg/dl with protein (30 mg/dl) present in urinalysis. Both kidneys were declined by all other transplantation units and subsequently accepted by our unit. The first kidney was perfused with red cell-based perfusate at 37°C for 75 min, mean renal blood flow was 110 ml/min/100 g and produced 85 ml of urine. Having demonstrated favorable macroscopic appearance and urine output, the kidney was transplanted into a 61-year-old peritoneal dialysis dependent without complication. Given the reassuring information from the first kidney provided by EVNP, the second kidney was not perfused with EVNP and was directly implanted to a 64-year-old patient. The first kidney achieved primary function and the second functioned well after delayed graft function. Recipient eGFR have stabilized at 88.5 and 55.3, respectively (ml/min/1.73 m
    MeSH term(s) Biopsy ; Delayed Graft Function/etiology ; Graft Survival ; Humans ; Kidney ; Kidney Transplantation/adverse effects ; Middle Aged ; Organ Preservation ; Perfusion ; Rhabdomyolysis/etiology ; Tissue Donors
    Language English
    Publishing date 2020-10-19
    Publishing country United States
    Document type Case Reports
    ZDB-ID 2060594-8
    ISSN 1600-6143 ; 1600-6135
    ISSN (online) 1600-6143
    ISSN 1600-6135
    DOI 10.1111/ajt.16329
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article: The eradication of ungulates (sheep and goats) from Dirk Hartog Island, Shark Bay World Heritage Area, Australia

    Heriot, Shane / Asher, John / Williams, Matthew R / Moro, Dorian

    Biological invasions. 2019 May, v. 21, no. 5

    2019  

    Abstract: The eradication of ungulates from offshore islands has now become achievable for island managers, with the size and complexity of an island no longer a major impediment to the desired outcome. Here, we report on a whole-of-island eradication campaign of ... ...

    Abstract The eradication of ungulates from offshore islands has now become achievable for island managers, with the size and complexity of an island no longer a major impediment to the desired outcome. Here, we report on a whole-of-island eradication campaign of ungulates (sheep Ovis aries and goats Capra hircus) from the semi-arid Dirk Hartog Island (63,300 ha) off the western Australian coast. The motive behind this campaign was to contribute towards the ecological restoration of this former grazing lease. From 2005, a concerted effort to remove ungulates began with regular destocking, and from 2010 a methodical aerial and ground shooting campaign was undertaken. Long-term commitments of funding and departmental support, staff with diverse skills, and an advisory network of professional people, have been critical components to this large-scale exercise. From 2005 to 2017 a total of 16,318 ungulates (5185 sheep and 11,133 goats) were removed from Dirk Hartog Island: 6839 by mustering, 2422 by ground shooting, 7040 by aerial shooting, and finally 17 by follow-up aerial monitoring and ground shooting. The island was declared free of ungulates in November 2017. To determine the success of the whole-of-island eradication campaign, multiple methods were adopted to locate remaining animals: use of ‘Judas’ goats, monitoring by motion-sensor cameras at water sources and across the island, and recording of tracks and fresh scats to locate any remaining animals. We estimated the likelihood that sheep and goats have been successfully eradicated from the island is 99.9% and 96.9%, respectively. The total cost (AUS$) of the aerial component of the eradication was $1,055,184, an average of $150/goat or $16/ha. The monitoring phase of the campaign (aerial detection and ground shoot) cost the least in terms of actual expenses (approximately $187,000) but the most is terms of cost per remaining goat (approximately $14,400). Ecosystem recovery following the eradication is already apparent with increased vegetation cover and reduced erosion. We conclude with some shared lessons that may assist similar large-scale eradication campaigns of islands. To date, Dirk Hartog Island is the largest island in the world where whole-of-island goat (and sheep) eradication has been achieved.
    Keywords Capra hircus ; cameras ; coasts ; ecological invasion ; ecological restoration ; ecosystems ; feces ; funding ; goats ; grazing ; islands ; leasing ; monitoring ; sheep ; vegetation cover ; Australia
    Language English
    Dates of publication 2019-05
    Size p. 1789-1805.
    Publishing place Springer International Publishing
    Document type Article
    ZDB-ID 1438729-3
    ISSN 1573-1464 ; 1387-3547
    ISSN (online) 1573-1464
    ISSN 1387-3547
    DOI 10.1007/s10530-019-01937-7
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  6. Article ; Online: Successful endovascular salvage of a pancreatic graft after a venous thrombosis: case report and literature review.

    Asher, John F / Wilson, Colin H / Talbot, David / Manas, Derek M / Williams, Rob / White, Steve A

    Experimental and clinical transplantation : official journal of the Middle East Society for Organ Transplantation

    2013  Volume 11, Issue 4, Page(s) 375–378

    Abstract: Simultaneous kidney and pancreatic transplant is the criterion standard for treatment of end-stage renal failure because of diabetic nephropathy. Venous thrombosis occurs in approximately 5% of pancreatic transplants, and it is notoriously difficult to ... ...

    Abstract Simultaneous kidney and pancreatic transplant is the criterion standard for treatment of end-stage renal failure because of diabetic nephropathy. Venous thrombosis occurs in approximately 5% of pancreatic transplants, and it is notoriously difficult to treat, forming the most common nonimmunologic cause of graft loss. We report a case of early detection of pancreatic graft venous thrombosis by measuring urinary amylase, resulting in the successful endovascular salvage of the pancreatic graft.
    MeSH term(s) Amylases/urine ; Biomarkers/urine ; Diabetes Mellitus, Type 1/complications ; Diabetic Nephropathies/diagnosis ; Diabetic Nephropathies/etiology ; Diabetic Nephropathies/surgery ; Early Diagnosis ; Endovascular Procedures ; Female ; Humans ; Kidney Failure, Chronic/diagnosis ; Kidney Failure, Chronic/etiology ; Kidney Failure, Chronic/surgery ; Kidney Transplantation ; Middle Aged ; Pancreas Transplantation/adverse effects ; Phlebography ; Predictive Value of Tests ; Radiography, Interventional ; Thrombectomy/methods ; Time Factors ; Treatment Outcome ; Venous Thrombosis/diagnosis ; Venous Thrombosis/etiology ; Venous Thrombosis/therapy ; Venous Thrombosis/urine
    Chemical Substances Biomarkers ; Amylases (EC 3.2.1.-)
    Language English
    Publishing date 2013-08
    Publishing country Turkey
    Document type Case Reports ; Journal Article ; Review
    ZDB-ID 2396778-X
    ISSN 2146-8427 ; 1304-0855
    ISSN (online) 2146-8427
    ISSN 1304-0855
    DOI 10.6002/ect.2012.0234
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: SARS-CoV-2 infection and early mortality of waitlisted and solid organ transplant recipients in England: A national cohort study.

    Ravanan, Rommel / Callaghan, Chris J / Mumford, Lisa / Ushiro-Lumb, Ines / Thorburn, Douglas / Casey, John / Friend, Peter / Parameshwar, Jayan / Currie, Ian / Burnapp, Lisa / Baker, Richard / Dudley, Jan / Oniscu, Gabriel C / Berman, Marius / Asher, John / Harvey, Dan / Manara, Alex / Manas, Derek / Gardiner, Dale /
    Forsythe, John L R

    American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons

    2020  Volume 20, Issue 11, Page(s) 3008–3018

    Abstract: Patients waitlisted for and recipients of solid organ transplants (SOT) are perceived to have a higher risk of contracting severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and death; however, definitive epidemiological evidence is lacking. In ...

    Abstract Patients waitlisted for and recipients of solid organ transplants (SOT) are perceived to have a higher risk of contracting severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and death; however, definitive epidemiological evidence is lacking. In a comprehensive national cohort study enabled by linkage of the UK transplant registry and Public Health England and NHS Digital Tracing services, we examined the incidence of laboratory-confirmed SARS-CoV-2 infection and subsequent mortality in patients on the active waiting list for a deceased donor SOT and recipients with a functioning SOT as of February 1, 2020 with follow-up to May 20, 2020. Univariate and multivariable techniques were used to compare differences between groups and to control for case-mix. One hundred ninety-seven (3.8%) of the 5184 waitlisted patients and 597 (1.3%) of the 46 789 SOT recipients tested positive for SARS-CoV-2. Mortality after testing positive for SARS-CoV-2 was 10.2% (20/197) for waitlisted patients and 25.8% (154/597) for SOT recipients. Increasing recipient age was the only variable independently associated with death after positive SARS-CoV-2 test. Of the 1004 transplants performed in 2020, 41 (4.1%) recipients have tested positive for SARS-CoV-2 with 8 (0.8%) deaths reported by May 20. These data provide evidence to support decisions on the risks and benefits of SOT during the coronavirus disease 2019 pandemic.
    MeSH term(s) Adolescent ; Adult ; COVID-19/epidemiology ; Child ; Child, Preschool ; England/epidemiology ; Female ; Humans ; Infant ; Infant, Newborn ; Male ; Organ Transplantation ; Pandemics ; Registries ; Retrospective Studies ; Risk Factors ; SARS-CoV-2 ; Survival Rate/trends ; Tissue Donors ; Transplant Recipients ; Waiting Lists/mortality ; Young Adult
    Keywords covid19
    Language English
    Publishing date 2020-09-16
    Publishing country United States
    Document type Journal Article ; Multicenter Study
    ZDB-ID 2060594-8
    ISSN 1600-6143 ; 1600-6135
    ISSN (online) 1600-6143
    ISSN 1600-6135
    DOI 10.1111/ajt.16247
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Book: Der guote Gêrhart

    Rudolf / Asher, John A

    (Altdeutsche Textbibliothek ; 56)

    1989  

    Title translation Der gute Gerhard
    Author's details von Rudolf von Ems. Hrsg. von John A. Asher
    Series title Altdeutsche Textbibliothek ; 56
    Language German ; German, Middle High
    Size XXVII, 232 S, 19 cm
    Edition 3., durchges. Aufl
    Document type Book
    Note Literaturverz. S. XXII - XXV
    ISBN 3484200537 ; 3484200553 ; 9783484200531 ; 9783484200555
    Database Former special subject collection: coastal and deep sea fishing

    More links

    Kategorien

  9. Article: A Prospective Randomised Paired Trial of Sirolimus versus Tacrolimus as Primary Immunosuppression following Non-Heart Beating Donor Kidney Transplantation.

    Asher, John / Vasdev, Nikhil / Wyrley-Birch, Hugh / Wilson, Colin / Soomro, Naeem / Rix, David / Jaques, Bryon / Manas, Derek / Torpey, Nicholas / Talbot, David

    Current urology

    2014  Volume 7, Issue 4, Page(s) 174–180

    Abstract: Introduction: With calcineurin inhibitors potentiating damage from ischaemia-reperfusion injury in kidneys from donors after cardiac death we wanted to investigate the role of substituting sirolimus for tacrolimus in the delayed introduction of ... ...

    Abstract Introduction: With calcineurin inhibitors potentiating damage from ischaemia-reperfusion injury in kidneys from donors after cardiac death we wanted to investigate the role of substituting sirolimus for tacrolimus in the delayed introduction of calcineurin inhibitor regime used in our centre.
    Method: A prospective randomised paired open-label study was performed taking pairs of kidneys from each donor and randomising one to a tacrolimus-based regime and the other to a similar regime based on sirolimus. Graft function at one year was the primary endpoint.
    Results: Total 31 pairs of kidneys were randomised to each group, with 19 pairs of recipients available for analysis after post-randomisation study exclusions. Despite a higher incidence of biopsy proven acute rejection in the sirolimus group, renal allograft function was similar in both groups at three-monthly intervals up to one year post-transplant. All episodes of acute rejection in the sirolimus group occurred in the first three months. Graft and patient survival at one year was 100% in the tacrolimus group, with one death with functioning graft in the sirolimus group (95% survival). Unfortunately, 10 of the 19 patients in the sirolimus arm required switch of medication to tacrolimus due to acute rejection or intolerable drug side effects.
    Conclusions: Graft survival and function were very similar in the two groups despite the higher rate of acute rejection in the sirolimus arm, raising the possibility that the damage done by acute rejection was adequately offset by the nephron-sparing effect of sirolimus compared to tacrolimus. Sirolimus may have a role as a longer-term maintenance immunosuppressant after initial treatment with a different agent such as tacrolimus or belatacept.
    Language English
    Publishing date 2014-08-20
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2253664-4
    ISSN 1661-7657 ; 1661-7649
    ISSN (online) 1661-7657
    ISSN 1661-7649
    DOI 10.1159/000365671
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article: SARS-CoV-2 infection and early mortality of wait-listed and solid organ transplant recipients in England: a national cohort study

    Ravanan, Rommel / Callaghan, Chris J / Mumford, Lisa / Ushiro-Lumb, Ines / Thorburn, Douglas / Casey, John / Friend, Peter / Parameshwar, Jayan / Currie, Ian / Burnapp, Lisa / Baker, Richard / Dudley, Jan / Oniscu, Gabriel C / Berman, Marius / Asher, John / Harvey, Dan / Manara, Alex / Manas, Derek / Gardiner, Dale /
    Forsythe, John L R

    Am. j. transplant

    Abstract: Patients wait-listed for and recipients of solid organ transplants (SOT) are perceived to have a higher risk of contracting SARS-CoV-2 and death; however, definitive epidemiological evidence is lacking. In a comprehensive national cohort study enabled by ...

    Abstract Patients wait-listed for and recipients of solid organ transplants (SOT) are perceived to have a higher risk of contracting SARS-CoV-2 and death; however, definitive epidemiological evidence is lacking. In a comprehensive national cohort study enabled by linkage of the UK transplant registry and Public Health England and NHS Digital Tracing services we examined the incidence of laboratory confirmed SARS-CoV-2 infection and subsequent mortality in patients on the active waiting list for a deceased donor SOT and recipients with a functioning SOT as of 1st February 2020 with follow up to 20th May 20202. Univariate and multivariable techniques were used to compare differences between groups and to control for case-mix. 197 (3·8%) of the 5,184 wait-listed patients and 597 (1·3%) of the 46,789 SOT recipients tested positive for SARS-CoV-2. Mortality after testing positive for SARS-CoV-2 was 10·2% (20/197) for wait-listed patients and 25·8% (154/597) for SOT recipients. Increasing recipient age was the only variable independently associated with death after positive SARS-CoV-2 test. Of the 1004 transplants performed in 2020, 41 (4·1%) recipients have tested positive for SARS-CoV-2 with 8 (0·8%) deaths reported by 20th May. These data provide evidence to support decisions on the risks and benefits of SOT during the COVID-19 pandemic.
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #780678
    Database COVID19

    Kategorien

To top