Uremic toxins such as guaniidine are actively transported into the kidneys via organic ion transporters (especially OAT3). Increased levels of uremic toxins can stimulate the production of reactive oxygen species. This seems to be mediated by the direct binding or inhibition by uremic toxins of the enzyme NADPH oxidase (especially NOX4 which is abundant in the kidneys and heart) (A7868). Reactive oxygen species can induce several different DNA methyltransferases (DNMTs) which are involved in the silencing of a protein known as KLOTHO. KLOTHO has been identified as having important roles in anti-aging, mineral metabolism, and vitamin D metabolism. A number of studies have indicated that KLOTHO mRNA and protein levels are reduced during acute or chronic kidney diseases in response to high local levels of reactive oxygen species (A7869).
Accumulation of specific guanidine compounds (GCs) has been related to neurological, cardiovascular, hematological, and immunological complications of renal failure ... The obvious increases of urea, guanidinosuccinic acid, creatinine, guanidine, methylguanidine, and N(G)N(G)-dimethylarginine (symmetrical dimethylarginine) seen in blood of oldest heterozygous and younger homozygous polycystic kidney disease (PKD) rats were largely within the same range as those found in the studied human PKD population, especially in patients with a glomerular filtration rate below 60 mL/min/1.73 sq m. The decreased levels of plasma guanidinoacetic acid seen at end-stage renal disease in homozygous and oldest heterozygous PKD/Mhm rats were also observed in serum of patients with a glomerular filtration rate below 20 mL/min/1.73 sq m ... /Guanidino compounds/
Brush-border membrane vesicles were prepared from donor human kidneys ... Uptake of (14)C-guanidine ... in the vesicles, as determined by rapid filtration, was significantly greater in the presence of an outwardly-directed proton gradient, at all early time points, than in the absence of the gradient ... Evidence was obtained suggesting that the transporter for guanidine is distinct from the previously described organic cation proton antiporter for TEA. /Tetraethylammonium/
The characteristics of guanidine uptake in brush-border membrane vesicles isolated from rabbit renal cortex were investigated. Guanidine uptake was markedly stimulated by an outwardly directed H+ gradient, resulting in a transient uphill transport. This stimulation was not due to an inside-negative, H+-diffusion potential because an ionophore-induced H+-diffusion potential and a K+-diffusion potential (both inside-negative) failed to enhance guanidine uptake. The H+ gradient itself appeared to be the driving force for the uptake ...
... The plasma, erythrocyte, and urinary concentration of guanidino compounds in 30 hemodialysis patients and 15 patients with chronic renal failure who had not undergone hemodialysis /were determined/ ... Plasma levels of taurocyamine, guanidinosuccinic acid, alpha-N-acetyl-L-arginine, creatine, guanidinobutyric acid, guanidine, and methylguanidine were significantly increased in patients with chronic renal failure with or without hemodialysis. In contrast, plasma guanidinoacetic acid concentrations were significantly decreased. Erythrocyte concentrations of creatinine, guanidinosuccinic acid, guanidine and methylguanidine were also markedly elevated. No correlation was observed between plasma creatinine concentration and erythrocyte concentration of guanidinosuccinic acid or methylguanidine. However, there was a significant correlation between plasma and erythrocyte methylguanidine, and between plasma and erythrocyte guanidinosuccinic acid. /Guanidino compounds/
The present invention relates to compounds and methods which may be useful as inhibitors of Rho kinase for the treatment or prevention of disease.
本发明涉及化合物和方法,这些化合物和方法可能作为Rho激酶的抑制剂在治疗或预防疾病方面有用。
[EN] PYRAZOLE DERIVATIVES USEFUL AS INHIBITORS OF FAAH<br/>[FR] DÉRIVÉS DE PYRAZOLE UTILES COMME INHIBITEURS DE FAAH
申请人:MERCK & CO INC
公开号:WO2009151991A1
公开(公告)日:2009-12-17
The present invention is directed to certain imidazole derivatives which are useful as inhibitors of Fatty Acid Amide Hydrolase (FAAH). The invention is also concerned with pharmaceutical formulations comprising these compounds as active ingredients and the use of the compounds and their formulations in the treatment of certain disorders, including osteoarthritis, rheumatoid arthritis, diabetic neuropathy, postherpetic neuralgia, skeletomuscular pain, and fibromyalgia, as well as acute pain, migraine, sleep disorder, Alzheimer disease, and Parkinson's disease
[EN] INHIBITORS OF GLYCINAMIDE RIBONUCLEOTIDE TRANSFORMYLASE<br/>[FR] INHIBITEURS DE LA TRANSFORMYLASE DE LA GLYCINAMIDE RIBONUCLEOTIDE
申请人:SCRIPPS RESEARCH INST
公开号:WO2003087065A1
公开(公告)日:2003-10-23
Potent human inhibitors of human glycinamide ribonucleotide transformylase and of aminoimidazole carboxamide ribonucleotide transformylase are designed, synthesized, and characterized.
Compounds of the formula (II) ##STR1## or a salt, N-oxide or acyl derivative thereof, wherein Y is a group ##STR2## which is optionaly substituted and which optionally contain a nitrogen atom at one of positions A, B, C, D or E, in which the dotted line represents aromatic rings unless one of the rings contains a nitrogen atom in which case this ring is either aromatic or partially saturated, have antimicrobial properties. Processes for making these compounds, pharmaceutical compositions containing them and the medical use of the compounds are also disclosed.
2-Benzazepines. 5. Synthesis of pyrimido[5,4-d][2]benzazepines and their evaluation as anxiolytic agents
作者:Eugene J. Trybulski、Louis E. Benjamin、James V. Earley、R. Ian Fryer、Norman W. Gilman、Earl Reeder、Armin Walser、Arnold B. Davidson、W. Dale Horst
DOI:10.1021/jm00365a008
日期:1983.11
A series of 5H-pyrimido[5,4-d][2]benzazepines has been synthesized, starting from the corresponding 2-benzazepin-5-ones, and evaluated as potential anxiolytic agents. Selected compounds from this series show a pharmacological profile of action different than that of diazepam. They are more potent than diazepam in the anti-pentylenetetrazole test and in the [3H]diazepam binding assay, yet show less