Abstract:
:Membrane integrity fluorescent staining is used routinely to evaluate islet viability. Results are used as one of the determining factors in islet product release criteria, and are used to assess the efficacy of different culture conditions. Recently, it has been observed that there is variation in the viability staining of freshly isolated islets based on which viability assay is used. This investigation compares three membrane integrity stains for the viability assessment of isolated human islets. Fluorescein diacetate/propidium iodide (FDA/ PI), the current standard method for assessing islet viability, demonstrates intense extracellular fluorescence, reducing the differential staining of intact islets. We further evaluated SYTO-13/ethidium bromide (SYTO/ EB) and calcein AM/ethidium homodimer (C/EthD) as alternative viability assays, and found considerable variation between FDA/PI and either SYTO/EB or C/EthD staining. Preparations of human islets were obtained from cadaveric pancreata after collagenase digestion, mechanical separation, and purification by continuous Ficoll gradient centrifugation. For each preparation, two replicate samples of 50 islets were counted for each stain, and the percent viability calculated. The results for SYTO/EB and C/EthD were nearly identical [57.6 +/- 7.3% and 57.9 +/- 7.2%, respectively (mean +/- SEM), N = 11]. FDA/PI-stained islets, however, showed consistently elevated values when compared to SYTO/EB. Accurate assessment of islet viability remains a critical determinant of islet product release. The discrepancies found between FDA/PI scoring and visual quality, compared with alternative stains, suggests that the FDA/PI stain may not be the optimal approach to assess islet viability.
journal_name
Cell Transplantjournal_title
Cell transplantationauthors
Barnett MJ,McGhee-Wilson D,Shapiro AM,Lakey JRdoi
10.3727/000000004783983701subject
Has Abstractpub_date
2004-01-01 00:00:00pages
481-8issue
5eissn
0963-6897issn
1555-3892journal_volume
13pub_type
杂志文章abstract::To overcome common disadvantages of standard cultured epidermal sheet grafts (CEG) we have developed a new technique of transplanting cultured human keratinocytes suspended as single cells in a fibrin-glue matrix (Keratinocyte-fibrin-glue suspension-KFGS). In an athymic mouse model with reproducible standardized full ...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1016/s0963-6897(98)00005-0
更新日期:1998-05-01 00:00:00
abstract::Mouse embryonal carcinoma cell line P19 could be differentiated to neurons or glial cells by appropriate induction. We introduced the lacZ gene driven by a calmodulin promoter into P19 cells, and cloned the transfectant CaM-Z that showed the strong expression of lacZ gene after the induction of differentiation. CaM-Z ...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1016/0963-6897(96)00030-9
更新日期:1996-09-01 00:00:00
abstract::The present study aimed to elucidate the mechanisms by which hydrogen sulfide (H2S) attenuates left ventricular remodeling after myocardial infarction (MI). MI was created in mice by left coronary artery ligation. One group of mice received injections of the H2S donor sodium hydrosulfide (NaHS) immediately before and ...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368917X695029
更新日期:2017-05-09 00:00:00
abstract::Intrauterine inflammation is a significant cause of injury to the developing fetal brain. Using a preterm fetal sheep model of in utero infection, we asked whether human amnion epithelial cells (hAECs) were able to reduce inflammation-induced fetal brain injury. Surgery was undertaken on pregnant sheep at ∼105 days ge...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368916X693572
更新日期:2017-04-13 00:00:00
abstract::We investigated the effect of the activation of complement in human serum on isolated adult porcine islets using an in vitro model of pig-to-human islet transplantation. Pancreata were obtained from slaughterhouse pigs (6-8 mo old). Islets were prepared by intraductal collagenase digestion followed by purification on ...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1016/0963-6897(96)00038-3
更新日期:1996-09-01 00:00:00
abstract::Spinal cord injury (SCI) causes loss of neural functions below the level of the lesion due to interruption of spinal pathways and secondary neurodegenerative processes. The transplant of neural stem cells (NSCs) is a promising approach for the repair of SCI. Reprogramming of adult somatic cells into induced pluripoten...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368916X691312
更新日期:2016-10-01 00:00:00
abstract::Porcine islets show notoriously low insulin secretion levels in response to glucose stimulation. While this is somehow expected in the case of immature islets isolated from fetal and neonatal pigs, disappointingly low secretory responses are frequently reported in studies using in vitro-maturated fetal and neonatal is...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368916X693798
更新日期:2017-05-09 00:00:00
abstract::Gammopathies, multiple myeloma, and amyloidosis are plasma dyscrasias characterized by clonal proliferation and immunoglobulin overproduction. Renal impairment is the most common and serious complication with an incidence of 20-30% patients at the diagnosis. Kidney transplant has not been considered feasible in the pr...
journal_title:Cell transplantation
pub_type: 杂志文章,评审
doi:10.3727/096368915X688560
更新日期:2016-01-01 00:00:00
abstract::We examined a possible protective effect of the nonpeptidyl low molecular weight radical scavenger IAC [bis(1-hydroxy-2,2,6,6-tetramethyl-4-piperidinyl)decanedioate di-hydrochloride] on isolated human islet cells against isolation and culture oxidative stress. Islets isolated from pancreases of nondiabetic multiorgan ...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368908787236639
更新日期:2008-01-01 00:00:00
abstract:BACKGROUND:Extracellular vesicles (EVs) released from mesenchymal stem/stromal cells (MSCs) mediate their paracrine effect, but their efficacy to protect the microcirculation of the kidney is unknown. Using a novel swine model of unilateral renovascular disease (RVD) complicated by metabolic syndrome (MetS), we tested ...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1177/0963689718780942
更新日期:2018-07-01 00:00:00
abstract::As a putative marker of cerebral small vessel disease, cerebral microbleeds (CMBs) have been associated with vascular cognitive impairment. Both iron accumulation and amyloid protein precursor (APP) dysregulation are recognized as pathological hallmarks underlying the progression of CMBs, but their cross-talk is not y...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1177/0963689719831707
更新日期:2019-08-01 00:00:00
abstract::Parkinson's disease (PD), while primarily associated with degeneration of nigrostriatal dopamine neurons, is now increasingly recognized to have more widespread cell loss and so the most effective cell replacement therapy should target all these neuronal losses. Neural precursor cells might be ideal in this regard as ...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/000000006783981684
更新日期:2006-01-01 00:00:00
abstract::Regenerative medicine aims to repair and regenerate damaged cells, tissues, and organs in order to restore function. Regeneration can be obtained either by cell replacement or by stimulating the body's own repair mechanisms. Importantly, a favorable environment is required before any regenerative signal can stimulate ...
journal_title:Cell transplantation
pub_type: 杂志文章,评审
doi:10.3727/096368916X693699
更新日期:2017-04-13 00:00:00
abstract::We have recently documented that oral Linomide (quinoline-3-carboxamide) prevents autoimmune insulitis, islet destruction, and diabetes in NOD mice treated at an early stage (5 wk of age) of the disease. In this report, we show that treatment of female NOD mice with advanced disease (age 23-24 wk) by syngeneic islet t...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1016/s0963-6897(96)00085-1
更新日期:1996-11-01 00:00:00
abstract::Cord blood is an attractive cell source in regenerative medicine and represents an alternative to bone marrow. The aim of this study was to investigate whether human umbilical cord blood mononuclear (HUCBM) cells might be valuable in hepatic regenerative medicine. HUCBM cells differentiated in vitro into hepatocytes, ...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368908786516837
更新日期:2008-01-01 00:00:00
abstract::Neural progenitor cells (NPCs) overexpressing fibroblast growth factor 2 (FGF-2) have the distinct tendency to associate with the vasculature and establish multiple proliferative clusters in the perivascular environment after transplantation into the cerebral cortex. Strikingly, the vascular clusters of progenitor cel...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368916X690421
更新日期:2016-01-01 00:00:00
abstract::Superparamagnetic iron oxide nanoparticles (MNPs) together with magnetic resonance imaging (MRI) are the preferred tools for monitoring the fate and biodistribution of administered cells in stem cell therapy studies. Commercial MNPs need transfection agents and long incubation times for sufficient cell labeling and fu...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368916X691303
更新日期:2016-10-01 00:00:00
abstract::Human skin contains keratinocytes in the epidermis. Such cells share their ectodermal origin with the central nervous system (CNS). Recent studies have demonstrated that terminally differentiated somatic cells can adopt a pluripotent state, or can directly convert its phenotype to neurons, after ectopic expression of ...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1177/0963689720978219
更新日期:2021-01-01 00:00:00
abstract::As an alternative to drug immunosuppression, attempts at inducing donor-specific tolerance by intrathymic (IT) inoculations to transplant recipient of donor origin alloantigenic products has proven very promising. Using fiber optic thoracoscopy, a technique for the study of this phenomena was developed for the dog. We...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1177/096368979400300413
更新日期:1994-07-01 00:00:00
abstract::Efficient maintenance of the undifferentiated status of embryonic stem cells (ESCs) may be important for preparation of high-quality cell sources that can be successfully used for stem cell research and therapy. Here we tried to identify a compound that can enhance the quality of pluripotent stem cells. Treatment of E...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368914X683511
更新日期:2015-01-01 00:00:00
abstract::During in vivo intracerebral infusions, the ability to perform accurate targeting towards a 3D-specific point allows control of the anatomical variable and identification of the effects of variations in other factors. Intraoperative MRI navigation systems are currently being used in the clinic, yet their use in nonhum...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368910X514323
更新日期:2010-01-01 00:00:00
abstract::Adequate regulation of glucose levels by a microencapsulated pancreatic islet graft requires a minute-to-minute regulation of blood glucose. To design such a transplant, it is mandatory to have sufficient insight in factors influencing the kinetics of insulin secretion by encapsulated islets. The present study investi...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/000000003108747226
更新日期:2003-01-01 00:00:00
abstract::Recently, FDA approved the clinical use of autologous fibroblasts (LAVIV™) for the improvement of nasolabial fold wrinkles in adults. The use of autologous fibroblasts for the augmentation of dermal and subcutaneous defects represents a potentially exciting natural alternative to the use of other filler materials for ...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368912X659844
更新日期:2014-01-01 00:00:00
abstract::Adrenal medullary tissue including chromaffin cells was grafted intrathecally in cancer patients to relieve intractable pain. The central nervous system (CNS) is considered an immune privileged site. Therefore, non-HLA-matched and unencapsulated tissue was grafted in 15 patients and 1 sham control in a series of at le...
journal_title:Cell transplantation
pub_type: 临床试验,杂志文章
doi:10.1177/096368970000900111
更新日期:2000-01-01 00:00:00
abstract::Acute myocardial infarction (AMI) results in ischemic damage and death of cardiomyocytes and loss of vasculature. Stem cell therapy has emerged as a potentially promising strategy for maximizing cardiac function following ischemic injury. Issues of cell source, delivery, and quantification of response have challenged...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368911X603657
更新日期:2012-01-01 00:00:00
abstract::Adipose tissue contains a mesenchymal stem cell (MSC) population known as adipose-derived stem cells (ASCs) capable of differentiating into different cell types. Our aim was to induce hepatic transdifferentiation of ASCs by sequential exposure to several combinations of cytokines, growth factors, and hormones. The mos...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368909X12483162197321
更新日期:2009-01-01 00:00:00
abstract::Cell therapy has been shown to be a promising alternative therapy for neurorestoration, and more than 30 different types of cells have been shown to possess some capability to restore lost or damaged neurological functions. Chinese physicians have successfully applied cell therapy to many neurological diseases and dam...
journal_title:Cell transplantation
pub_type: 杂志文章,评审
doi:10.3727/096368913X672082
更新日期:2013-01-01 00:00:00
abstract::Huntington's disease (HD) produces severe neurodegeneration in the striatum leading to disabling motor impairments, including the loss of control of skilled reaching movements. Fetal GABAergic transplants can physically replace the lost striatal cells but with only partial success in functional recovery. Here, we aime...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368912X657918
更新日期:2013-01-01 00:00:00
abstract::It is widely believed that human embryonic stem (huES) cells may represent a valid alternative to donor pancreata as a source of islets for transplantation. Much is known about the transcription factors whose sequential activation results in the generation of islets during pancreatic development. This knowledge has be...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/000000006783982359
更新日期:2006-01-01 00:00:00
abstract::Hematopoietic stem and progenitor cells reside within the bone marrow (BM) microenvironment. By a well-balanced interplay between self-renewal and differentiation, they ensure a lifelong supply of mature blood cells. Physiologically, multiple different cell types contribute to the regulation of stem and progenitor cel...
journal_title:Cell transplantation
pub_type: 杂志文章,评审
doi:10.1177/0963689717745890
更新日期:2018-05-01 00:00:00