Abstract:
:Chromium (VI) compounds are widely recognized as human carcinogens. Extensive studies in vitro and in model systems indicate that the reactive intermediate, Cr (V), generated by cellular reduction of Cr (VI), is likely the candidate for the ultimate carcinogenic form of chromium compounds. Here we review our current understanding of the in vivo reduction of Cr (VI) and its related free radical generation. Our results demonstrate that Cr (V) is indeed generated from the reduction of Cr (VI) in vivo, and that Cr (V) thus formed can mediate the generation of free radicals. Cr (V) and its related free radicals are very likely to be involved in the mechanism of Cr (VI)-induced toxicity and carcinogenesis. These studies also illustrate that in vivo EPR spectroscopy and magnetic resonance imaging can be very useful and powerful tools for studying paramagnetic metal ions in chemical and biochemical reactions occurring in intact animals.
journal_name
Mol Cell Biochemjournal_title
Molecular and cellular biochemistryauthors
Liu KJ,Shi Xkeywords:
subject
Has Abstractpub_date
2001-06-01 00:00:00pages
41-7issue
1-2eissn
0300-8177issn
1573-4919journal_volume
222pub_type
杂志文章abstract::TGR(mREN2)27 is a transgenic rat harboring the murine Ren-2 gene and exhibit fulminant hypertension and marked heart hypertrophy. In order to study the role of angiotensin II in the increase of cardiac mass, these animals were treated with antihypertensive and non-antihypertensive doses of the angiotensin II receptor ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00408661
更新日期:1996-10-01 00:00:00
abstract::Hydrogen sulfide (H2S) has been investigated widely in recent years. H2S plays a variety of roles in different biological systems, including cardiovascular system. It is the final product of amino acids metabolism, which contains sulfur-cysteine and homocysteine (Hcy). In human plasma, there are several various forms ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-015-2364-8
更新日期:2015-06-01 00:00:00
abstract::Sertoli and peritubular myoid cells, the somatic cells of the seminiferous tubule, support growth and differentiation of developing germ cells. This action strictly depends on the availability of in situ synthesized retinoic acid and we have previously documented the ability of Sertoli, but not peritubular cell extrac...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1023/a:1025575521060
更新日期:2003-10-01 00:00:00
abstract::Hypermethylation of promoter CpG islands represents an alternative mechanism to inactivate tumor suppressor genes. This study was to detect promoter methylation status and mRNA expression levels of ARRDC3, ELP3, GATA5, and PAX6, and to explore the association between methylation and expression in invasive ductal carci...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-014-2143-y
更新日期:2014-11-01 00:00:00
abstract::Subsequent to the first alpha 2-adrenergic receptor (alpha 2-AR) gene cloning of alpha 2-C10 from human platelet, cloning of the first rodent alpha 2-AR cDNA, cA2-47, was reported. Based on the structural and limited pharmacological comparison, it was concluded that the rodent receptor is a molecular and pharmacologic...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00944398
更新日期:1995-03-23 00:00:00
abstract::The antineoplastic drug estramustine is an adduct of estradiol and nor-nitrogen mustard. It has been shown that this drug interferes with microtubule assembly, an effect mediated by estramustine interaction with microtubule-associated proteins (MAPs). In the present report we demonstrate that estramustine and the phos...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00230756
更新日期:1992-11-18 00:00:00
abstract::Cyclophosphamide (CP) is one of the widely used anticancer agents; however, it has serious deleterious effects on normal host cells due to its nonspecific action. The essential trace element Selenium (Se) is suggested to have chemopreventive and chemotherapeutic efficacy and currently used in pharmaceutical formulatio...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-016-2839-2
更新日期:2017-01-01 00:00:00
abstract::Adenylate kinases (AK, EC 2.7.4.3) have been considered important enzymes for energy homeostasis and metabolic signaling. To gain a better understanding of their cell-specific significance we studied the structural and functional aspects of products of one adenylate kinase gene, AK1, in mouse tissues. By combined comp...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1023/b:mcbi.0000009859.15267.db
更新日期:2004-01-01 00:00:00
abstract::The tRNA modifying enzyme, S-adenosylmethionine:tRNA(guanine-7-)-methyltransferase, has been extensively purified from Salmonella typhimurium. A rapid and efficient purification method using phosphocellulose chromatography followed by ammonium sulfate precipitation and Sephadex G-100 gel filtration is described. The e...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00224919
更新日期:1983-01-01 00:00:00
abstract::Human telomerase reverse transcriptase is an essential rate-limiting component of telomerase complex. hTERT protein in association with other proteins and the human telomerase RNA (hTR) shows telomerase activity, essential for maintaining genomic integrity in proliferating cells. hTERT binds hTR through a decapeptide ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-016-2907-7
更新日期:2017-03-01 00:00:00
abstract::Modulation of Ca(2+) homoeostasis in cardiac myocytes plays a major role in beat-to-beat regulation of heart function. Previous studies suggest that sphingosine-1-phosphate (S1P), a biologically active sphingomyelin metabolite, regulates Ca(2+) handling in cardiac myocytes, but the underlying mechanism is unclear. In ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-016-2752-8
更新日期:2016-08-01 00:00:00
abstract::Transmission of extra cellular signals across biological membranes results in the generation of lipid metabolites which in turn influence specific cellular events such as cell growth or differentiation. Many of these lipid messengers can activate protein kinase C (PKC) isozymes of which one function is to perpetuate t...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00926176
更新日期:1994-12-21 00:00:00
abstract::Calpain inhibitors show the potential to serve as non-surgical alternatives in treating diabetic cataract and other types of these disorders. Here, we have tested the recently developed calpain inhibitor, SJA6017, for its ability to inhibit cataractogenesis in porcine lenses. These lenses were incubated in increasing ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1023/b:mcbi.0000028752.89886.43
更新日期:2004-06-01 00:00:00
abstract::Guanidinosuccinic acid is an aberrant metabolite isolated 40 years ago in the blood and urine of uremic subjects and a suspect in the toxicity associated with renal failure. It plays a minor role in the bleeding diathesis of uremia, contributes to the methyl group deficiency of dialysis patients, and is a factor in th...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-006-9351-z
更新日期:2007-04-01 00:00:00
abstract::GD3, a minor ganglioside in most normal tissues, is involved in important biological events and its expression could increase in pathological conditions. Organism integrity requires a tight balance between the anabolic and catabolic processes, thus it is important to control the intracellular expression of those "key"...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-006-9406-1
更新日期:2007-07-01 00:00:00
abstract::The results of our experiments demonstrated that one hour of ischemia followed by one hour of reflow in the kidney caused a reduction in (Na+K+)ATPase activity and microsomal sulfhydryl content as well as an increase in microsomal lipid peroxidation. Renal venous malondialdehyde concentration was increased soon after ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00229689
更新日期:1987-12-01 00:00:00
abstract::Pig intestinal brush borders (BB) were radiolabeled by iodination using the lactoperoxidase-hydrogen peroxide procedure. The BB were then detergent solubilized, centrifuged to remove particulate material, and chromatographed on Sepharose CL-4B. The fractions were incubated with K88+ E. coli using an in vitro binding a...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00224926
更新日期:1983-01-01 00:00:00
abstract::We report the isolation of a full length cDNA from cardiac muscle that encodes a approximately 73 kDa calcium/calmodulin (CaM) dependent kinase IIbeta isoform (CaMKIIbeta(C)) that was generated by alternative splicing of the CaMKIIbeta gene. Antipeptide antibodies raised to specific regions of the kinase identified a ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-005-5234-y
更新日期:2005-02-01 00:00:00
abstract::CDK11(p58), a G2/M-specific protein kinase, has been shown to be associated with apoptosis in many cell lines, with largely unknown mechanisms. Our previous study proved that CDK11(p58)-enhanced cycloheximide (CHX)-induced apoptosis in SMMC-7721 hepatocarcinoma cells. Here we report for the first time that ectopic exp...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-007-9502-x
更新日期:2007-10-01 00:00:00
abstract::The angiotensin converting enzyme (ACE) is a key factor in the production of angiotensin II and in the degradation of bradykinin. Chronic exposure to high levels of circulating and tissue ACE predispose to vascular wall thickening and atherosclerosis. Factor VII (FACTOR VII) is the first enzyme in the extrinsic pathwa...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-010-0440-7
更新日期:2010-08-01 00:00:00
abstract:UNLABELLED:Carnosic acid is a well-known antioxidant. Recently, it has been identified as modulator of nuclear factor erythroid 2-related factor 2 (Nrf2). The effect of carnosic acid in the context of cardiovascular disorders has not been studied. In the present study, we investigated the beneficial effect and the unde...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-014-2092-5
更新日期:2014-09-01 00:00:00
abstract::Clinically significant occlusive vascular lesions contain more extracellular matrix (ECM) proteins and lipid deposition than healthy vascular tissue. The events leading to this condition remain unresolved. One possibility is that ECM deposition may exceed ECM degradation which would contribute to the expansion of the ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:
更新日期:2003-07-01 00:00:00
abstract::Thymol is a phytochemical component present in many plants used as food additive in order to promote animal growth due to its several biological properties. However, possible side effects of thymol remain poorly known limited to few reports. In this sense, we evaluated the enzymes of the purinergic signaling such as, ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-018-3416-7
更新日期:2019-02-01 00:00:00
abstract::Coronary vascular endothelial cells control vascular tone by modulating the local concentration of circulating vasoactive substances (e.g. adenine nucleotides, biogenic amines and bradykinin) and by synthesising and releasing the vasoactive autacoids nitric oxide (NO) and prostacyclin (PGI2). The fluid shear stress ex...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章,评审
doi:10.1007/BF00227892
更新日期:1996-04-12 00:00:00
abstract::Reactive oxygen species (ROS) have been indicated as important signal mediators for many cell surface receptors. We previously demonstrated that ROS are generated by cross-linking surface receptor CD40 and consequently induce c-Jun N-terminal kinase activation and interleukin-6 secretion in murine B cells. In this stu...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1023/a:1025529704480
更新日期:2003-10-01 00:00:00
abstract::Ischemia/reperfusion injury causes cardiomyocyte apoptosis, ventricular remodeling, leading to a dilated heart. Hypoxia is one of the causes involved in ischemia damage, and BNIP3 is a hypoxia-inducible marker and also a sensor to induce mitochondria-dependent apoptosis. Recent reports discussed ablating BNIP3 can res...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-010-0578-3
更新日期:2010-12-01 00:00:00
abstract::The clinical benefit of selective BRAF inhibitor therapies is limited by the emergence of drug resistance. Here, we investigated the molecular basis underlying the acquired resistance to a BRAF inhibitor by comparing the signaling pathways in the parental A375P cells and the resistant subline (A375P/Mdr). We demonstra...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-014-2034-2
更新日期:2014-07-01 00:00:00
abstract::Deficient wound healing is a common multifactorial complication in diabetic patients, but the cellular and molecular mechanisms involved are poorly defined. In the present study, we analyzed the effects of hyperglycemia on integrins expression in rat dermal fibroblasts and addressed its role in cell adhesion and migra...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-016-2780-4
更新日期:2016-10-01 00:00:00
abstract::Histone acetylation and deacetylaion play important roles in chromatin remodeling and gene expression. An imbalance of these reactions leads to aberrant behavior of the cells in the cell cycle, which in turn contributes to carcinogenesis. Histone deacetylase (HDAC) inhibitors have been shown to have anti-tumor effects...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-010-0510-x
更新日期:2010-10-01 00:00:00
abstract::A membrane-bound L-asparaginase (EC 3.5.1.1) of Tetrahymena pyriformis was purified to homogeneity. The purified enzyme is a lipoprotein, since it is inactivated by phospholipase C and its activity is restored by the addition of naturally occurring lipids, such as phosphatidylcholine, triolein and oleyl acetate. The r...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00226142
更新日期:1988-10-01 00:00:00