Abstract:
UNLABELLED:Frozen biospecimens are crucial for translational research and contain well-preserved nucleic acids and protein. However, the risks of freezer failure as well as space, cost, and environmental concerns of frozen biospecimens are substantial. OBJECTIVE:The purpose of the study was to review the current status of room temperature biospecimen storage. METHODS:We searched Pubmed and vendor websites to identify relevant information. RESULTS:Formalin-fixed paraffin embedded (FFPE) tissues have great value but their use is limited by cross-linking and fragmentation of nucleic acids, as well as loss of enzymatic activity. Stabilization solutions can now robustly preserve fresh tissue for up to 7days at room temperature. For longer term storage, commercial vendors of chemical matrices claim real time stability of nucleic acids of over 2 years and their accelerated aging studies to date suggest stability for 12years for RNA and 60years for DNA. However, anatomic pathology biorepositories store mostly frozen tissue rather than nucleic acids. Small quantities of tissue can be directly placed on some chemical matrices to stabilize DNA, however RNA and proteins are not preserved. Current lyophilization approaches can preserve histomorphology, DNA, RNA, and proteins though RNA shows moderate degradation after 1-2years. Formalin-free fixatives show improved but varying abilities to preserve nucleic acids and face validation as well as cost barriers in replacing FFPE specimens. The paraffin embedding process can degrade RNA. CONCLUSION:Development of robust long-term room temperature biospecimen tissue storage technology can potentially reduce costs for the biomedical community in the face of growing targeted therapy needs and decreasing budgets.
journal_name
Clin Biochemjournal_title
Clinical biochemistryauthors
Lou JJ,Mirsadraei L,Sanchez DE,Wilson RW,Shabihkhani M,Lucey GM,Wei B,Singer EJ,Mareninov S,Yong WHdoi
10.1016/j.clinbiochem.2013.12.011subject
Has Abstractpub_date
2014-03-01 00:00:00pages
267-73issue
4-5eissn
0009-9120issn
1873-2933pii
S0009-9120(13)00596-1journal_volume
47pub_type
杂志文章,评审abstract:OBJECTIVES:To evaluate impact of risk estimation parameters for screening for Down Syndrome during the first and second trimesters. METHODS:We prospectively examined for their performance in the prenatal prediction of trisomy 21, alphafetoprotein (AFP), unconjugated estriol (uE3), total human chorionic gonadotropin (h...
journal_title:Clinical biochemistry
pub_type: 临床试验,杂志文章
doi:10.1016/0009-9120(95)00021-z
更新日期:1995-08-01 00:00:00
abstract:OBJECTIVE:Neonatal abstinence syndrome (NAS) is a rising concern with unknown long-term effects. It is apparent that higher cost of care, impact on the community and reduced quality of life are associated with similar etiologies (e.g., fetal alcohol syndrome). Detection of drug exposure in utero allows for earlier inte...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2017.09.016
更新日期:2017-12-01 00:00:00
abstract::We describe a patient who received intravenous dimethyl sulphoxide (DMSO) (as part of an experimental protocol) to control increased intracranial pressure. The patient died of a brain abscess. She developed extreme serum hyperosmolality from the DMSO with the osmolality peaking at 717 mosmol/kg. DMSO may induce extrem...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(83)90168-6
更新日期:1983-08-01 00:00:00
abstract:OBJECTIVES:We evaluated the effects of lifestyle modification (LM) on lipid profile, oxidative stress and serum-stimulated human coronary artery endothelial cell (HCAEC) viability in coronary artery disease (CAD) patients after 6months. DESIGN AND METHODS:Thirty patients with CAD were randomly assigned to LM intervent...
journal_title:Clinical biochemistry
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.clinbiochem.2010.04.056
更新日期:2010-07-01 00:00:00
abstract:BACKGROUND:There is little information on temperature and period of freezing for generating hemolysate and blood cell lysate. MATERIALS AND METHODS:Primary tubes containing whole blood were frozen at -20°C and -80°C and then serially thawed to assess cell lysis and clinical chemistry tests in centrifuged plasma. RESU...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2011.07.015
更新日期:2011-10-01 00:00:00
abstract::In order to evaluate cardiovascular risk, we analyzed the lipid composition of HDL and the presence of lipoprotein(a) [Lp(a)] by both agarose gel electrophoresis and enzyme-linked immunoassay (ELISA). In 681 plasmas we found a close correspondence between the existence of a visible sinking pre-beta lipoprotein band an...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/0009-9120(93)90117-o
更新日期:1993-10-01 00:00:00
abstract:OBJECTIVES:To evaluate the association between plasma lipids and insulin and variation in the genes for apolipoproteins (APO) E (CfoI), B (insertion/deletion), C1 (HpaI), and C3 (C-482T, C3238G) in a population-based Czech Slavonic study. DESIGN AND METHODS:In 131 men and 154 women, polymorphisms were investigated usi...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(01)00184-9
更新日期:2001-03-01 00:00:00
abstract::Altered urinary excretion of glycosaminoglycans (GAG) has been reported in patients with nephrolithiasis, with chronic glomerulonephritis, and incipient diabetic nephropathy, but evaluation of urinary GAG has not been reported in infections and proliferating diseases of the urinary tract. Urinary excretion of GAG was ...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/0009-9120(87)90013-0
更新日期:1987-12-01 00:00:00
abstract:OBJECTIVE:To clarify the possibility that midband Lp in LDL fractions might act as an atherogenic lipoprotein in their interaction with macrophages. DESIGN AND METHODS:Low density lipoproteins (LDL) isolated by zonal ultracentrifugation from midband lipoprotein-positive serum in type lib hyperlipidemics were subjected...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/0009-9120(96)00009-c
更新日期:1996-06-01 00:00:00
abstract::Unexpected differences in clinical and biochemical findings in two brothers occupationally exposed to the same source of lead for dissimilar lengths of time are presented. Only the brother with the shorter period of lead exposure was anemic and afflicted by nausea, vomiting, abdominal colic and arthralgia. His urinary...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(85)80090-4
更新日期:1985-04-01 00:00:00
abstract:OBJECTIVES:To compare the circulating levels of matrix metalloproteinase (MMP)-2, MMP-9, tissue inhibitors of metalloproteinase (TIMP)-1, TIMP-2, and the MMP-9/TIMP-1 and MMP-2/TIMP-2 ratios in preeclampsia and gestational hypertension with those found in normotensive pregnancies. DESIGN AND METHODS:We studied 83 preg...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2008.04.015
更新日期:2008-07-01 00:00:00
abstract:BACKGROUND:Genetic variations of UDP-glucuronyltransferase 1A1 (UGT1A1) influence the concentration of serum bilirubin. We investigated the association of four common polymorphisms including UGT1A1-53(TA)(n), and common haplotypes of the UGT1A1 gene with bilirubin levels in 218 Caucasian volunteers. METHODS:Total bili...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2009.08.011
更新日期:2009-11-01 00:00:00
abstract:OBJECTIVES:To assess the medical applicability of CpG methylation as molecular markers for cancer diagnosis, we established a new system to determine DNA methylation based on TaqMan PCR combined with a methyl-binding-domain polypeptide 2. DESIGN AND METHODS:We evaluated the diagnostic applicability of this approach by...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2009.03.017
更新日期:2009-07-01 00:00:00
abstract:OBJECTIVES:During the development of a testosterone assay by LC-MS/MS, we encountered significant assay interference introduced by blood collection tubes. We examined a number of commonly used blood collection tubes for the presence of interference and its impact on testosterone quantitation. DESIGN AND METHODS:A numb...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2012.08.008
更新日期:2012-12-01 00:00:00
abstract:OBJECTIVES:To verify the role of IL-12 in the pathogenesis of psoriasis and determine its relation to IFNgamma. DESIGN AND METHODS:Skin biopsies from lesional and non-lesional skin of 30 patients and 10 healthy controls were obtained for quantitative PCR examination of IL-12 (P40) and IFNgamma mRNA as well as in situ ...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2005.11.008
更新日期:2006-02-01 00:00:00
abstract:OBJECTIVES:All patients who undergo cardiopulmonary bypass (CPB) experience some degree of ischemia reperfusion injury (IRI). Severe IRI-induced acute kidney injury (AKI) occurs in approximately 1-2% of patients undergoing CPB. Previous studies using activity-based protein profiling of urine identified group XV phospho...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2020.12.003
更新日期:2021-02-01 00:00:00
abstract:BACKGROUND:Gliomas are tumors of the central nervous system derived from glial cells. They show cellular heterogeneity and lack specific diagnostic markers. Although a possible role for the eicosanoid cascade has been suggested in glioma tumorigenesis, the relationship between enzymes and receptors implicated in arachi...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2010.03.017
更新日期:2010-07-01 00:00:00
abstract::An understanding of the production, transport, hepatic uptake, biotransformation and excretion of bile pigments is necessary for the rational investigation of a patient presenting with jaundice. These aspects are reviewed, and at each step of bilirubin metabolism the clinical abnormalities giving rise to jaundice are ...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(76)80037-9
更新日期:1976-06-01 00:00:00
abstract:BACKGROUND:Cystinosis is a rare autosomal recessive disorder characterized by an accumulation of intralysosomal cystine due to a defect in cystine transport across the lysosomal membrane. This disorder can be treated specifically using high doses of cysteamine. Accurate measurement of intracellular cystine content is n...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2007.02.005
更新日期:2007-06-01 00:00:00
abstract:OBJECTIVES:In widely used protocols for the collection and isolation of cord blood mononuclear cells, investigators are left with substantial volumes of diluted plasma which could be used for other measurements. The aim of this study was to ascertain the validity of umbilical cord blood (UCB) diluted plasma samples for...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2015.04.014
更新日期:2015-11-01 00:00:00
abstract:OBJECTIVES:To develop immunofluorometric procedures for measuring BRCA1 protein in various biological fluids and tissue extracts. DESIGN AND METHODS:Five commercially available monoclonal and polyclonal antibodies against BRCA1 were evaluated for developing competitive and non-competitive immunofluorometric procedures...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(97)00042-8
更新日期:1997-07-01 00:00:00
abstract:OBJECTIVES:Regulatory T cells (Tregs) which may indicate operational tolerance provide a promising biomarker for individualization of immunosuppression. Naturally thymus-derived Tregs (nTregs) represent the major suppressive phenotype and can be identified by their demethylation status in the Tregs Specific Demethylate...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2016.05.019
更新日期:2016-10-01 00:00:00
abstract::The recently emerged severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) spread all over the world rapidly and caused a global pandemic. To prevent the virus from spreading to more individuals, it is of great importance to identify and isolate infected individuals through testing. Reverse transcription-quanti...
journal_title:Clinical biochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.clinbiochem.2020.12.011
更新日期:2021-01-09 00:00:00
abstract::To design and deliver high quality, safe and effective products, manufacturers of in vitro diagnostic (IVD) products follow a structured, traceable process for controlling the uncertainty of results reported from their measurement systems. This process and its results however, are not often shared in detail with those...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2018.04.012
更新日期:2018-07-01 00:00:00
abstract:OBJECTIVES:To evaluate the analytical performance of the testosterone assay performed on the Bayer immuno 1 system from Bayer Corporation. DESIGN AND METHODS:The precision was measured using three Bayer TESTpoint Ligand controls, three Medical Decision Pools and the Bayer SETpoint Testosterone calibrators. The lineari...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(97)00140-9
更新日期:1998-02-01 00:00:00
abstract::We present data comparing the Roche CEA radioimmunoassay (RIA) utilizing ultrafiltration and the Abbott CEA immunoradiometric assay (IRMA) methods for standard curve sensitivity, analytical reproducibility, recovery (pre and post extraction), dilution linearity, and patient correlation. The Roche intra- and inter-assa...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(82)97007-2
更新日期:1982-10-01 00:00:00
abstract:OBJECTIVES:This study explored the relationship between oxidative stress biomarkers and stability of carotid plaque. We decided to analyze the broad range of parameters describing oxidative stress in patients with carotid stenosis. DESIGN AND METHODS:124 consecutive patients undergoing carotid endarterectomy were enro...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2013.05.057
更新日期:2013-08-01 00:00:00
abstract::Galactose is normally metabolized to glucose through the coordinated activities of three enzymes: galactokinase, galactose-1-phosphate uridyl transferase (GALT), and uridine diphospho-glucose 4-epimerase (epimerase). High concentrations of galactose and their metabolites are toxic to mammals. Hereditary deficiencies o...
journal_title:Clinical biochemistry
pub_type: 杂志文章,评审
doi:10.1016/0009-9120(91)80003-l
更新日期:1991-08-01 00:00:00
abstract:BACKGROUND:The effectiveness of the URIT-2900 Hematology Analyzer for screening of hemoglobinopathies commonly found in Southeast Asian populations was examined. METHODS:Appropriate cut-off values of MCV and MCH for screening of α(0) and β thalassemias were derived from the receiver operator characteristic curve condu...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2011.04.009
更新日期:2011-07-01 00:00:00
abstract::The structure of enzyme active sites and the nature of the catalytic process are reviewed. The impressive efficiency of these protein catalysts appears to stem from such factors as proximity and orientation of enzyme and substrate moieties, strain, and the occurrence of distinctive microenvironments within catalytic c...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(76)80040-9
更新日期:1976-06-01 00:00:00