Cleavage of cyclic AMP-responsive element-binding protein H aggravates myocardial hypoxia reperfusion injury in a hepatocyte-myocardial cell co-culture system.
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Cleavage of cyclic AMP-responsive element-binding protein H aggravates myocardial hypoxia reperfusion injury in a hepatocyte-myocardial cell co-culture system.
This study aims to determine whether the proinflammatory cytokines have effects on myocardial cells (MC) and hepatocytes during myocardial ischemia to induce cyclic element-binding protein H (CREBH) cleavage AMP-responsive, enabling the acute phase response in the liver, and cause injury MCs.In superimposed on this research, transwell co-culture system hepatocyte-MC is used to investigate the relationship between the injury of hypoxia / reperfusion myocardial and CREBH cleavage.
MC and neonatal rat hepatocytes derived from the ventricles and heart Sprague Dawley rats each. MC inoculated into the lower chamber of the transwell chamber for 12 hours under hypoxia. The level of endoplasmic reticulum stress protein glucose-regulated protein 78 in MC, CREBH in hepatocytes, inflammatory factors (tumor necrosis factor-α and interleukin-6) levels, and cell viability is evaluated.
CREBH influence knockdown was also studied using short hairpin RNA specifically CREBH (Ad-CREBHi) .We found that proinflammatory cytokines affect MC and hepatocytes during myocardial ischemia to induce cleavage CREBH, activate the acute phase response in the liver, and cause injury superimposed on MCs. Expression of CREBH exacerbate the myocardial injury during myocardial ischemia.
Development co-culture model of mouse primary hepatocytes and splenocytes to evaluate the genotoxicity of xenobiotics using medium-throughput Comet assay.
To date, only a limited number of toxicology studies have focused on the establishment and validation of in vitro genotoxicity screening system using primary hepatocytes, and the results of these studies have been inconsistent. Therefore, the aim of this study was to develop a model of effective co-culture of rat primary hepatocytes and splenocytes derived for screening chemicals for medium-throughput genotoxicity using the Comet assay.
Cleavage of cyclic AMP-responsive element-binding protein H aggravates myocardial hypoxia reperfusion injury in a hepatocyte-myocardial cell co-culture system.
Cocultured model is built and verified using known genotoxic and non-genotoxic compounds as positive and negative controls, respectively. Cytotoxicity was measured using Cell Counting Kit-8 and lactate dehydrogenase method. DNA damage was detected using both alkaline and formamidopyrimidine glikosilase DNA test (FPG) Comet. Compared with controls, DNA strand breaks and FPG-sensitive sites showed a significant concentration-dependent increase in group-treated genotoxic agents.
In contrast, DNA damage remains unchanged in groups of non-genotoxic-agent-treated. In addition, various types of DNA lesions lead to genotoxic agents depending on different times.
Description: Gentaur offers an assortment of various human and non-human hepatic derived cells. These include Hepatocytes, Total Liver Cell Population (TLC), Stellates, Progenitors and Intra-hepatic biliary epithelial cells. We offer these as cryopreserved cells for convenience. Cryopreserved cells are suitable for a variety of assays including induction, toxicity, drug metabolism and systems biology. Both adherent and suspension cells are available. Custom configurations are available upon request.
Liver Dissociation System 2 (Hepatocytes, Parenchymal hepatocytes), Mouse and Rat
Description: The liver fulfills many vital processes in mammals. It is the central organ of energy metabolism, biotransformation of xenobiotics, and synthesis of plasma proteins under physiological and pathophysiological conditions. Primary human hepatocyte culture is an important experimental model for the study of liver specific function. Propagation of human hepatocytes is critical for gene therapy, cell transplantation and clinical liver support systems. In appropriate culture condition, cultured human hepatocytes proliferate and maintain differentiated hepatocyte function such as the synthesis of serum proteins. HH from Gentaur Research Laboratories are isolated from human liver. HH are cryopreserved immediately after purification and delivered frozen. Each vial contains 1 x 10^6 cells in 1 ml volume. HH are characterized by immunofluorescent method with antibodies to albumin, cytokeratin-18 and vimentin. HH are negative for HIV-1, HBV, HCV, mycoplasma, bacteria, yeast and fungi. HH is not recommended for expanding or long term cultures since the cells do not proliferate in culture.
Description: Our High Quality Mouse Hepatocytes have been isolated from mouse livers after liver perfusion and low-speed differential centrifugation. The hepatocytes are cryoperserved immediately after the experimental process and delivered frozen.
Description: Gentaur offers an assortment of various human and non-human hepatic derived cells. These include Hepatocytes, Total Liver Cell Population (TLC), Stellates, Progenitors and Intra-hepatic biliary epithelial cells. We offer these as cryopreserved cells for convenience. Cryopreserved cells are suitable for a variety of assays including induction, toxicity, drug metabolism and systems biology. Both adherent and suspension cells are available. Custom configurations are available upon request.
Cryo Rat (Wistar Hannover) Hepatocytes, Suspension
Description: The cell line was prepared by immortalizing hepatocytes from a 12 year-old Caucasian female donor with the SV40 large T antigen. The donor tested negative for CMV, HIV, HBV, and HCV.
Description: Gentaur offers an assortment of various human and non-human hepatic derived cells. These include Hepatocytes, Total Liver Cell Population (TLC), Stellates, Progenitors and Intra-hepatic biliary epithelial cells. We offer these as cryopreserved cells for convenience. Cryopreserved cells are suitable for a variety of assays including induction, toxicity, drug metabolism and systems biology. Both adherent and suspension cells are available. Custom configurations are available upon request.
Description: Freshly isolated human hepatocytes represent a living biological system in which to measure metabolism, induction, toxicity, and transporter studies.
Description: Human Pooled Primary Hepatocytes (Heps) provide an ideal culture model for drug testing and drug development.Heps 20 Human Pooled Primary Hepatocytes contain cryopreserved hepatocytes pooled from 20 different donors and have undergone only one freeze cycle. Pooled hepatocytes provide the genetic diversity necessary for superior reliability and predictability of the metabolic characteristics of a test compound relative to a representative population. Pooled hepatocytes increase experimental control and reduce costs by eliminating the need to conduct redundant experiments necessary to obtain population-based data. Each lot has undergone a single freeze cycle, assuring maximum hepatocyte viability and consistency from donor to donor within the pool.Cell Features:Each donor's hepatocytes have been cryopreserved ONCE immediately after isolation and purification.Pools of 10 or 20 donors are available. Each donor is represented by a statistically significant number of cells relative to the pool.There is extensive quality control providing characterization of viability and enzyme activity from both individual donors and the total pool.Gentaur guarantees performance and quality.Donor information is available.
Description: Human Pooled Primary Hepatocytes (HP2 Heps) provide an ideal culture model for drug testing and drug development. HP2 10 Human Pooled Primary Hepatocytes contain cryopreserved hepatocytes pooled from 10 different donors and have undergone only one freeze cycle. Pooled hepatocytes provide the genetic diversity necessary for superior reliability and predictability of the metabolic characteristics of a test compound relative to a representative population. Pooled hepatocytes increase experimental control and reduce costs by eliminating the need to conduct redundant experiments necessary to obtain population-based data. Each lot has undergone a single freeze cycle, assuring maximum hepatocyte viability and consistency from donor to donor within the pool.Cell Features:Each donor's hepatocytes have been cryopreserved ONCE immediately after isolation and purification.Pools of 10 or 20 donors are available. Each donor is represented by a statistically significant number of cells relative to the pool.There is extensive quality control providing characterization of viability and enzyme activity from both individual donors and the total pool.Gentaur guarantees performance and quality.Donor information is available.
Description: Gentaur's hepatocytes for suspension assays (HP1 Heps-s - single donor, male) provide an economic source of characterized human hepatocytes for use in short-term suspension assays to evaluate the metabolism of drug candidates. Gentaur's hepatocytes are a functional, convenient and economical solution for your drug testing and basic research needs. Each lot is provided with extensive characterization of metabolic functionality to ensure that you receive an ideal model for drug testing, drug development or other metabolic studies. Gentaur's human hepatocytes eliminate the need and expense of obtaining liver tissue, and conducting multiple cell isolations; and Gentaur also provides hepatocyte-tested culture reagents and instructions necessary for thawing and culturing your hepatocytes.Cell Features:Suitable for induction assays or metabolic characterization assays in plated or suspension cultures. Plated cultures are excellent for long-term intrinsic clearance assays.Hepatocytes are cryopreserved ONCE immediately after isolation and purification.Characterization of viability and enzyme activity, including fold-induction of CYP1A2, CYP2B6 and CYP3A4 for HP1 Heps-i.Gentaur guarantees performance and quality.Donor demographics and medical information are available.
Description: Gentaur's hepatocytes for suspension assays (HP1 Heps-s, single donor, female) provide an economic source of characterized human hepatocytes for use in short-term suspension assays to evaluate the metabolism of drug candidates. Gentaur's hepatocytes are a functional, convenient and economical solution for your drug testing and basic research needs. Each lot is provided with extensive characterization of metabolic functionality to ensure that you receive an ideal model for drug testing, drug development or other metabolic studies. Gentaur's human hepatocytes eliminate the need and expense of obtaining liver tissue, and conducting multiple cell isolations; and Gentaur also provides hepatocyte-tested culture reagents and instructions necessary for thawing and culturing your hepatocytes.Cell Features:Suitable for induction assays or metabolic characterization assays in plated or suspension cultures. Plated cultures are excellent for long-term intrinsic clearance assays.Hepatocytes are cryopreserved ONCE immediately after isolation and purification.Characterization of viability and enzyme activity, including fold-induction of CYP1A2, CYP2B6 and CYP3A4 for HP1 Heps-i.Gentaur guarantees performance and quality.Donor demographics and medical information are available.
Description: Mouse Hepatocyte Stem Cells; Frozen Vial and Plated cells are available. Cells are only guaranteed with purchase of Gentaur Media and Gentaur Extra Cellular Matrix for appropriate cell culture, for 30 days from the date of shipment.
Description: Gentaur offers an assortment of various human and non-human hepatic derived cells. These include Hepatocytes, Total Liver Cell Population (TLC), Stellates, Progenitors and Intra-hepatic biliary epithelial cells. We offer these as cryopreserved cells for convenience. Cryopreserved cells are suitable for a variety of assays including induction, toxicity, drug metabolism and systems biology. Both adherent and suspension cells are available. Custom configurations are available upon request.
Description: These hepatocytes overcome the functionality, reproducibility, and availability limitations of existing primary cell and tumor-derived cell models by providing the following:Relevant hepatic functionality and phenotypic stabilityExpression of clinical targets that are relevant for liver and metabolic diseaseCompatibility with a wide range of 3D and microphysiological systemsQuality-controlled manufacturing and batch reproducibilityReady supply in a cryopreserved format
Hepatocytes of male Wistar rat in monolayer, in 6 well-plate
Description: Gentaur offers an assortment of various human and non-human hepatic derived cells. These include Hepatocytes, Total Liver Cell Population (TLC), Stellates, Progenitors and Intra-hepatic biliary epithelial cells. We offer these as cryopreserved cells for convenience. Cryopreserved cells are suitable for a variety of assays including induction, toxicity, drug metabolism and systems biology. Both adherent and suspension cells are available. Custom configurations are available upon request.
Description: Gentaur's inducible hepatocytes (HP1 Heps-i, single donor, male) can be plated and used in long-term drug induction studies or metabolic studies where long-term incubations are required. Gentaur's cryopreserved primary human hepatocytes are a functional, convenient and economical solution for your drug testing and basic research needs. Each lot is tested for plating and provided with extensive characterization of metabolic functionality to ensure that you receive an ideal model for drug testing, drug development or other metabolic studies. Gentaur's human hepatocytes eliminate the need and expense of obtaining liver tissue, and conducting multiple cell isolations; and Gentaur also provides hepatocyte-tested culture reagents and instructions necessary for thawing and culturing your hepatocytes.Cell Features:Suitable for induction assays or metabolic characterization assays in plated or suspension cultures. Plated cultures are excellent for long-term intrinsic clearance assays.Hepatocytes are cryopreserved ONCE immediately after isolation and purification.Characterization of viability and enzyme activity, including fold-induction of CYP1A2, CYP2B6 and CYP3A4 for HP1 Heps-i.Gentaur guarantees performance and quality.Donor demographics and medical information are available.
Description: Gentaur's inducible hepatocytes (HP1 Heps-i, single donor, female) can be plated and used in long-term drug induction studies or metabolic studies where long-term incubations are required. Gentaur's cryopreserved primary human hepatocytes are a functional, convenient and economical solution for your drug testing and basic research needs. Each lot is tested for plating and provided with extensive characterization of metabolic functionality to ensure that you receive an ideal model for drug testing, drug development or other metabolic studies. Gentaur's human hepatocytes eliminate the need and expense of obtaining liver tissue, and conducting multiple cell isolations; and Gentaur also provides hepatocyte-tested culture reagents and instructions necessary for thawing and culturing your hepatocytes.Cell Features:Suitable for induction assays or metabolic characterization assays in plated or suspension cultures. Plated cultures are excellent for long-term intrinsic clearance assays.Hepatocytes are cryopreserved ONCE immediately after isolation and purification.Characterization of viability and enzyme activity, including fold-induction of CYP1A2, CYP2B6 and CYP3A4 for HP1 Heps-i.Gentaur guarantees performance and quality.Donor demographics and medical information are available.
Description: Characterization: 1. Cell Activity;- Recovery Viability ≥ 50%.- After approximately 2 days in culture, the cells will form clear dendrites and axons.- Cells can survive in culture for as long as 13-16 days.2. Cell Purity;- MAP2-positive cells ≥ 70%.- β-tubulin III-positive cells ≥ 70%.
Description: Characterization: 1. Cell Activity;- Recovery Viability ≥ 50%.- After approximately 2 days in culture, the cells will form clear dendrites and axons.- Cells can survive in culture for as long as 13-16 days.2. Cell Purity;- MAP2-positive cells ≥ 70%.- β-tubulin III-positive cells ≥ 70%.
Description: A competitive ELISA for quantitative measurement of Rat Hepatocyte Growth Factor in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Rat Hepatocyte Growth Factor in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Rat Hepatocyte Growth Factor in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Our results show that the tail DNA% showed both strands of DNA break and FPG-sensitive sites may be an effective marker for predicting chemical-induced DNA damage and oxidative DNA damage using a model cocultured hepatocytes and splenocytes. Collectively, these findings provide reliable experimental data for the establishment of in vitro genotoxicity screening methods.
