Abstract:
:The comet assay measures DNA damage in individual cells (usually lymphocytes) and is widely used in biomonitoring studies. Lymphocytes are harvested and are usually cryopreserved for batch testing. We investigated cell loss during harvesting, cryopreservation, thawing, and washing of human peripheral lymphocytes and compared DNA damage, using the Fpg-assisted comet assay for oxidation-induced DNA lesions, in freshly harvested cells and cells that were thawed and tested after cryopreservation of 2-3 days and 4 weeks. Lymphocyte numbers were measured in fresh venous blood and after the steps of harvesting, cryopreservation, and washing. Results showed that >50% of lymphocytes in whole blood were harvested, but ∼60% were lost during washing. Loss during washing was not different (P>0.05) between fresh cells and cells thawed and washed after 2-3 days or 4 weeks cryopreservation. No change in DNA damage was seen after cryopreservation and thawing: mean (SD) % DNA in comet tail was 11.2 (1.53) in freshly harvested cells, 12.9 (1.39) in 2-3 days cryopreserved cells, and 12.9 (2.0) in cells tested after 4 weeks cryopreservation (P>0.05). Results indicate that there is no predominant loss of more highly damaged cells during cryopreservation and thawing and there is no induction of oxidation-induced DNA lesions in cryopreserved cells stored for up to 4 weeks.
journal_name
Biopreserv Biobankjournal_title
Biopreservation and biobankingauthors
Ho CK,Choi SW,Siu PM,Benzie IFdoi
10.1089/bio.2011.0024subject
Has Abstractpub_date
2011-12-01 00:00:00pages
343-7issue
4eissn
1947-5535issn
1947-5543journal_volume
9pub_type
杂志文章abstract::Animal-derived products are widely used in sperm cryopreservation for their cryoprotective properties. These components, however, tend to be replaced because of sanitary risks. STEMALPHA.CRYO3 (Ref. 5617; Stem Alpha, Saint-Genis-l'Argentière, France), called "CRYO3," is a chemically defined preservation medium current...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2018.0067
更新日期:2019-01-01 00:00:00
abstract::Most university biobanks begin like other university research projects, that is, with an idea conceived by an individual researcher in pursuit of his/her own research interests, publications, funding, and career. Some biobanks, however, come to have scientific value that goes beyond the projects that were initially re...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2018.0054
更新日期:2018-08-01 00:00:00
abstract::Biobanks and biobanking networks are involved in varying degrees in the collection, processing, storage, and dissemination of biological specimens. This review outlines the approaches that 16 of the largest biobanks and biobanking networks in Europe, North America, Australia, and Asia have taken to collecting and dist...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2010.0003
更新日期:2009-09-01 00:00:00
abstract::We describe here a unique approach to identifying small molecules that are useful in stabilizing biomolecules in the dry and liquid states. Using biostability screens aided by in silico docking experiments and synthetic chemistry, libraries of biostability molecules are analyzed for their ability to protect important ...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2012.0022
更新日期:2012-08-01 00:00:00
abstract::The establishment of a cryopreservation procedure for sheep oocytes will enhance the development of long-term conservation of sheep female genetic resources and the advancement of sheep embryonic biotechnology. However, higher cytoplasmic lipid content and complex subcellular structures affect the relatively higher se...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章,评审
doi:10.1089/bio.2017.0074
更新日期:2017-12-01 00:00:00
abstract::The advent of molecular characterization of tissues has brought an increasing emphasis on the quality of biospecimens, starting with the tissue procurement process. RNA levels are particularly affected by factors in the collection process, but the influence of different pre-analytical factors is not well understood. H...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2014.0076
更新日期:2015-06-01 00:00:00
abstract::Tissue banks represent essential resources and platforms for biomedical research serving basic, translational, and clinical research projects. In this article, we describe 2 models of biobanking and tissue preservation with different approaches and aims. Archive tissue biobanking is described here as a resource of res...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2011.0010
更新日期:2011-06-01 00:00:00
abstract:BACKGROUND:Conducting high throughput -omics research requires high quality, data-rich biospecimens to unravel factors underlying childhood cancers; this is an extra burden in a limited resources country. For this purpose, Children's Cancer Hospital (CCHE), the largest pediatric cancer hospital worldwide, established a...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2015.0004
更新日期:2016-02-01 00:00:00
abstract::Disease advocacy organizations play an increased role in the development and management of registries and biorepositories. Genetic Alliance developed criteria to assist organizations in selecting vendors and conducted a technical assessment survey of potential vendors. More than half offered customizable solutions, an...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2010.0007
更新日期:2010-06-01 00:00:00
abstract::Insulin-dependent diabetes mellitus is one of the leading causes of death world-wide. Donor-derived pancreas and Islet of Langerhans transplantation are potential cures; however, postmortem ischemia impacts islet quality. The murine βt3 cell line was employed as a model to study cell viability and proliferation after ...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2012.0023
更新日期:2013-02-01 00:00:00
abstract::Systematic cryo-banking of reproductive tissues could enhance reproductive management and ensure sustainability of rare mammalian genotypes. Testicular tissues contain a vast number of germ cells, including at early stages (spermatogonia and spermatocytes), that can potentially develop into viable spermatozoa after gr...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2020.0010
更新日期:2020-06-01 00:00:00
abstract::Modern taxonomy requires the preservation of biospecimens for both morphological and molecular applications. The utility of a previously identified preservative, dimethyldimethylhydantoin hydantoin (Dekafald®), to retain both physical diagnostic traits and the DNA integrity of biological specimens remains unknown. Usi...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2020.0001
更新日期:2020-08-01 00:00:00
abstract::Tissues from postmortem transplantation donors are a viable and productive option for genomic research. This entails obtaining authorization from the family decision makers (FDMs) of deceased donors. This study examined best practices for making such requests within the context of the Genotype-Tissue Expression (GTEx)...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2017.0115
更新日期:2018-06-01 00:00:00
abstract::Glycerol and dimethyl sulfoxide (DMSO) are widely used cryoprotectants for freezing human cell cultures. During the manufacturing process of ocular stem cell-based autographs, ex vivo cultivated ocular cells are cryopreserved for quality control purposes in accordance with regulatory requirements. The efficiency of th...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2020.0091
更新日期:2020-11-13 00:00:00
abstract::Cryopreservation is a recognized method for the maintenance of Leptospira collections. Although cryoprotectants are commonly used in order to prevent or reduce the adverse effects of freezing, there is no consensus regarding the protocols of cryopreservation. This study aimed to compare cryopreservation protocols for ...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2015.0046
更新日期:2016-02-01 00:00:00
abstract:BACKGROUND:The preanalytical phase is considered the most vulnerable phase in biopreservation, biobanking, and laboratory diagnostics. Accurate mixing after blood collection is claimed to be important and recommended by the manufacturers. OBJECTIVE:To evaluate whether it is really necessary to mix the primary blood tu...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2013.0043
更新日期:2014-02-01 00:00:00
abstract::l-Carnitine (LC) plays a key role in sperm metabolism, easily providing energy through β-oxidation, which positively affects motility. The objective of this study was to investigate the association between blood plasma and seminal plasma LC levels, as well as the effect of LC as an additive in a skimmed milk-based ext...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2020.0025
更新日期:2020-10-01 00:00:00
abstract::Following its emergence in December 2019, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) caused what rapidly became a global pandemic. The precise origin and subsequent path of transmission have not yet been established-but like the other novel coronaviruses that it closely resembles, it appears to have ...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章,评审
doi:10.1089/bio.2020.0066
更新日期:2020-12-01 00:00:00
abstract::Biobanks are now in the spotlight as key enablers supporting preclinical, clinical, and environmental research. Awareness of their value has increased along with the need for these infrastructures to be sustained through business-focused practices. Following our 2017 pilot survey on biobank business planning, we initi...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2019.0005
更新日期:2019-06-01 00:00:00
abstract::Due to the requirement for comprehensive clinical research efforts in China, the importance of biobanking in modern clinical research is outlined in this overview. Hospitals, universities, and research institutes have been well organized as fundamental resources for Chinese biobanking initiatives and the resulting bio...
journal_title:Biopreservation and biobanking
pub_type: 历史文章,杂志文章
doi:10.1089/bio.2014.0096
更新日期:2015-02-01 00:00:00
abstract::Biobanking biological samples involve multiple handling, processing, and labeling steps. Each step may be a source of error, which if unnoticed or uncorrected may have consequences for research. We aimed to develop a simple and inexpensive genotyping method that would be valuable to detect such errors and confirm samp...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2015.0113
更新日期:2016-10-01 00:00:00
abstract::Cryopreservation includes a set of techniques aimed at storing biological samples and preserving their biochemical and functional features without any significant alterations. This study set out to investigate the effects induced by cryopreservation on cultured sheepskin fibroblasts (CSSF) through cryomicroscopy and g...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2016.0100
更新日期:2017-08-01 00:00:00
abstract::Research infrastructures remain the key for state-of-the-art and successful research. In the last few decades, biobanks have become increasingly important in this field through standardization of biospecimen processing, sample storage, and standardized data management. Research infrastructure in cohort studies and oth...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2015.0087
更新日期:2015-12-01 00:00:00
abstract::Formalin fixation is known to inactivate most viruses in a vaccine production context, but nothing is published about virus activity in tissues treated with alternative, non-crosslinking fixatives. We used a model assay based on cell culture to test formalin and PAXgene Tissue fixative for their virus-inactivating abi...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2013.0010
更新日期:2013-08-01 00:00:00
abstract::Cryopreservation (CP) is a critical component in enabling on-demand access to biological material (macromolecules, cells, and tissues), yet CP has evolved little over the last several decades. Today's CP processes often yield a suboptimal "product," which has slowed progression in areas such as cell therapy and stem c...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章,评审
doi:10.1089/bio.2016.0119
更新日期:2017-04-01 00:00:00
abstract::The COVID-19 era has brought about a number of novel challenges for the global biobanking community. An array of diverse tools (e.g., standards, best practices, and plans) exists to support quality and fitness-for-purpose in biobank operations. The International Society for Biological and Environmental Repositories (I...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2020.0083
更新日期:2020-12-01 00:00:00
abstract::Formalin-fixed paraffin-embedded (FFPE) material presents a readily available resource in the study of various biomarkers. There has been interest in whether the storage period has significant effect on the extracted macromolecules. Thus, in this study, we investigated if the storage period had an effect on the quanti...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2012.0052
更新日期:2013-04-01 00:00:00
abstract::The quality of RNA preserved in different stabilization matrices was investigated after 2 weeks of storage at room temperature. RNA samples in RNAstable (Biomatrica), GenTegra (IntegenX), and RNAshell (Imagene) were compared to RNA stored at -80°C (the current gold standard for RNA preservation) and with liquid or dri...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章,多中心研究
doi:10.1089/bio.2012.0030
更新日期:2012-12-01 00:00:00
abstract::The consent process involves three steps; referral for contact, preliminary interview, and informed consent discussion. We propose that the efficiency and frequency of the consent process for individual biobank related projects increases when the referral for contact is conducted by an independent "Permission to Conta...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2013.0004
更新日期:2013-06-01 00:00:00
abstract::Human tissue banks are a potential source of cellular material for the nascent cell-based therapy industry; umbilical cord (UC) tissue is increasingly privately banked in such facilities as a source of mesenchymal stem cells for future therapeutic use. However, early handling of UC tissue is relatively uncontrolled du...
journal_title:Biopreservation and biobanking
pub_type: 杂志文章
doi:10.1089/bio.2013.0027
更新日期:2013-10-01 00:00:00