MechanismofAcetaminophenActivityandToxicity
Acetaminophen is one of the worlds most commonly used drugs, used for the treatment of pain and fever. Like other NSAIDs (non-steroidal anti-inflammatory drugs), acetaminophen has a unique activity profile based in part on its action at its molecular targets, the cyclooxygenase enzymes that produce prostaglandins responsible for pain, fever and inflammation. Until very recently, only two Cox enzymes, Cox-1 and Cox-2,......阅读全文
Mechanism－of－Acetaminophen－Activity－and－Toxicity
Acetaminophen is one of the worlds most commonly used drugs, used for the treatment of pain and fever. Like other NSAIDs (non-steroidal anti-inflammat
Nuclear－Receptors－in－Lipid－Metabolism－and－Toxicity
Nuclear receptors are transcription factors that are activated upon binding to its ligands. Initially, they had been classified as classic endocrine n
Anthrax－Toxin－Mechanism－of－Action
One of the key causes of anthrax virulence is the production of three specific factors by the gram-positive spore forming bacteria Bacillus anthracis.
Mechanism－of－Protein－Import－into－the－Nucleus
Nuclear pore complexes (NPCs) are large proteinaceous assemblies that provide the only known portals for exchanging macromolecules between the nucleus
Assay－of－Phospholipase－A－Activity
Phospholipases of the A type constitute a large family of esterases that catalyze the hydrolysis of the fatty acid ester bonds in phospholipids an
Guidelines－for－theUse－of－Analgesics－and－Tranquilizers－in－Laboratory－Animal4
Other AnalgesicsAnalgesics are pain relievers most often given after a surgery. Narcotic analgesics have already been described above. Nonsteroidal an
Regulation－of－transcriptional－activity－by－PML
The PML nuclear bodies are ring-shaped nuclear substructures associated with the regulation of transcription, transformation, cell growth, and apoptos
Measuring－PLD－Activity－In－Vivo
Phospholipase D (PLD) hydrolyzes structural phospholipids like phosphatidylcholine (PC) and phosphatidylethanolamine (PE) into phosphatidic acid (
Alanine－Transaminase－Activity－Assay
实验概要Alanine Transaminase (ALT) is a transaminase (EC 2.6.1.2) also called serum glutamic pyruvic transaminase (SGPT). Alanine Transaminase is found
GST－Activity－Fluorometric－Assay
实验概要The experiment provides a simple, fluorescence-based in vitro assay for detecting the GST activity using a fluorescence plate reader. The assay
Basic－mechanism－of－action－of－PPARa,－PPARb(d)－and－PPARg－and－effects
Similar to other nuclear hormone receptores, PPAR acts as a ligand activated transcription factor. Upon binding fatty acids or hypolipidemic drugs, PP
Mechanism－of－Gene－Regulation－by－Peroxisome－Proliferators－via－PPARa(alpha)
The most recognized mechanism by which peroxisome proliferators regulated gene expresssion is through a PPAR/RXR heterodimeric complex binding to a pe
SUMOylation－as－a－mechanism－to－modulate－CtBPdependent－gene－responses
Covalent attachment of one eukaryotic protein to another is a prominent posttranslational modification and Ubiquitin is the most familiar of the prote
肠道微生物能影响三聚氰胺诱发肾病
北卡罗莱纳大学的Wei Jia教授与英国伦敦帝国学院的Jeremy Nicholson教授研究小组合作进行了一项国际研究，研究显示，肠道内的微生物可影响三聚氰胺中毒引起的肾脏疾病的严重程度。2008年，近30万中国儿童因食用受三聚氰胺（故意添加以提高蛋白质含量）污染的奶粉引发肾脏疾病而住院。虽然已知
Hydrolytic－Activity－of－Bacterial－Supernatants－for－Fungal－Suppression
As the fungal growth suppression by biocontrol agents (BCA) in solid media using dual plate assay has some issues regarding nutrient limitation. A pro
Assay－of－superoxide－dismutase－activity3
Botanical Bulletin of Academia Sinica, Vol. 37, 1996The method using NBT as a superoxide radical competitor and a color indicator was also explored to
Assay－of－superoxide－dismutase－activity1
Assay of superoxide dismutase activity by combining electrophoresis and densitometryAbstract. A modified technique was developed to assay superoxide d
Assay－of－superoxide－dismutase－activity2
Cuvette holders in the sample chamber of the spectrophotometer were thermo-controlled at 25°C. For the blank test, 100 ml of 50 mM potassium phosphate
Methods－for－the－Measurement－of－a－Bacterial－Enzyme－Activity－in－Cell－Lysates
AbstractThe kinetic characteristics and regulation of aspartate carbamoyltransferase activity were studied in lysates and cell extracts of Helicobacte
什么是水活度（Water－Activity）
水活度被定义为当前可用“自由水”的量，和水分含量没有直接的对比关系，水活度值范围在0(绝对干燥)和1（100%相对湿度）之间。当物质与环境空气发生水分交换活动会在表面形成对微生物生长的理想条件，这样会影响微生物的稳定性。水活度同时也是影响食品中化学反应的重要因素。
Pelp1－Modulation－of－Estrogen－Receptor－Activity
Proline-,glutamic acid-,leucine-rich protein 1 (Pelp1 also known as:modulator of nongenomic activity of estrogen or MNAR) is a recently discovered tra
Cellfree－System－for－the－examination－of－apoptotic－activity
IntroductionIn our lab we use the term 'cell-free system' when we talk about the examination of apoptotic activity in cytoplasmic extracts. T
Histochemical－staining－of－sea－urchin－embryos－for－(AP)－enzyme－activity
Histochemical staining of sea urchin embryos for alkaline phosphatase (AP) enzyme activity1. Obtain embryo samples, tube of AP substrate buffer and tu
BRCA1dependent－Ubligase－activity
BRCA1 is a breast and ovarian cancer tumor suppressor protein that associates with BARD1 to form a RING/RING heterodimer. The BRCA1/BARD1 RING complex
Calcium－Signaling－by－HBx－of－Hepatitis－B－virus
Hepatitis B is a small DNA virus that contains only 4 open reading frames in its genome. Three of these ORFs have been identified as the envelope, cap
Methods－for－the－Measurement－of－a－Bacterial－Enzyme－Activity－in－Cell－Lysates4
The use of a micro-titre based colorimetric assay provided a third method for the study of ACTase activity, and the most useful for large scale measur
Methods－for－the－Measurement－of－a－Bacterial－Enzyme－Activity－in－Cell－Lysates3
Different enzyme assays for ACTase study in H. pyloriACTase properties were studied in situ in cell-free extracts to obtain information on enzyme func
Methods－for－the－Measurement－of－a－Bacterial－Enzyme－Activity－in－Cell－Lysates2
Measurement of ACTase activityNuclear magnetic resonance spect roscopy (NMR)The unique potential of NMR spectroscopy for monitoring simultaneously the
Cell－Staining－for－SenescenceAssociated－betaGalactosidase－－Activity
DescriptionCell Staining for Senescence-Associated â-Galactosidase (SA-â-Gal) Activity Procedure1. Carefully remove the growth media from the cell cul
Bone－Remodelling
Bone density and structure is maintained through a balance of bone resorption by osteoclasts and bone deposition by osteoblasts. The combination of si