Abstract:
:1. The present study was performed to test the hypothesis that the reactive oxygen species (ROS)-angiotensinogen (AGT)-renin angiotensin system (RAS) axis is sequentially activated in the development of diabetic nephropathy in Zucker diabetic fatty (ZDF) obese rats. 2. Genetic pairs of male ZDF obese and control ZDF lean rats (n = 12 of each species) were killed every 3 weeks from 12 to 21 weeks of age (n = 6 at each time point). 3. The ZDF obese rats developed diabetes mellitus at 12 weeks. At that time, urinary excretion rates of 8-isoprostane were similar between the groups; however, urinary 8-isoprostane levels were significantly increased at 15 weeks in ZDF obese rats compared with controls (36 +/- 6 vs 15 +/- 2 ng/day, respectively). At 15 weeks, protein levels of cortical angiotensinogen were similar between groups; however, cortical angiotensinogen levels were significantly increased at 18 weeks in ZDF obese rats compared with controls (relative ratio of 2.32 +/- 0.21 vs 1.00 +/- 0.20, respectively). At 12 weeks, angiotensin (Ang) II-like immunoreactivity was similar between groups in both the glomeruli and tubules; however, AngII-like immunoreactivity was increased significantly at 21 weeks in ZDF obese rats compared with controls (relative ratios of 1.98 +/- 0.55 vs 1.00 +/- 0.03, respectively, for glomeruli and 1.58 +/- 0.16 vs 1.00 +/- 0.13, respectively, for tubules). Moreover, at 21 weeks, the desmin-positive area in the glomeruli (0.63 +/- 0.08 vs 0.22 +/- 0.05%) and Masson's trichrome stain-positive area in the interstitium (4.97 +/- 0.05 vs 3.18 +/- 0.41%) were significantly increased in ZDF obese rats compared with controls, even though these differences had not been observed earlier. 4. These data suggest that the sequential activation of the ROS-AGT-RAS axis plays an important role in the development of diabetic nephropathy in ZDF obese rats.
journal_name
Clin Exp Pharmacol Physioljournal_title
Clinical and experimental pharmacology & physiologyauthors
Miyata K,Ohashi N,Suzaki Y,Katsurada A,Kobori Hdoi
10.1111/j.1440-1681.2008.04938.xsubject
Has Abstractpub_date
2008-08-01 00:00:00pages
922-7issue
8eissn
0305-1870issn
1440-1681pii
CEP4938journal_volume
35pub_type
杂志文章abstract::1. It has been suggested that oestrogen-produced vasodilatation is due to induction of endothelial nitric oxide synthase (NOS), but there are many reports of direct effects on vascular smooth muscle. In the present study, these processes were investigated in rat aorta isolated from ovariectomized rats. 2. Short-term t...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1998.tb02188.x
更新日期:1998-02-01 00:00:00
abstract::1. The present review describes the actions of sensory neuropeptides on the contractility of the rat and guinea-pig prostate gland and discusses the differences in sensitivity of the smooth muscle of the prostates taken from these species to these neuropeptides. 2. Nerve fibres immunoreactive for the tachykinins subst...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1046/j.1440-1681.2000.03361.x
更新日期:2000-11-01 00:00:00
abstract::1. Recent data from randomized controlled dietary trials have shown blood pressure-lowering effects of foodstuffs and dietary patterns to be of practical importance for both individual and population blood pressure control. 2. The salient studies include Dietary Approaches to Stop Hypertension (DASH) trials, on comple...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1046/j.1440-1681.2001.03562.x
更新日期:2001-12-01 00:00:00
abstract::1. Reactive oxygen species (ROS) are a diverse family of molecules that are produced throughout the vascular wall. Many ROS, such as the superoxide anion (*O2-) and hydrogen peroxide (H2O2), are now known to act as cellular signalling molecules within blood vessels. In particular, these molecules can exert powerful ef...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1046/j.1440-1681.2003.03920.x
更新日期:2003-11-01 00:00:00
abstract::1. UbcH10 is the cancer-related E2 ubiquitin-conjugating enzyme, and its overexpression has been demonstrated in a variety of malignancies. The aim of the present study is to silence UbcH10 gene by RNA interference (RNAi) and to observe its inhibitory effect on the colorectal cancer cell growth in vitro and in vivo. 2...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2009.05348.x
更新日期:2010-05-01 00:00:00
abstract::Hypertension developed within 5 weeks in uninephrectomized rats administered deoxycorticosterone acetate (DOCA, 30 mg/kg, s.c., weekly) and given isotonic saline to drink. Chronic dietary administration of tryptophan (50 g/kg food) reduced intake of saline solution and prevented the elevation of systolic blood pressur...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1986.tb02380.x
更新日期:1986-11-01 00:00:00
abstract::Rats were prepared with chronic cannulae in the carotid artery, jugular vein and urinary bladder; they were then kept 2 days to allow recovery from surgery. A steady-state continuous saline diuresis was established, then various anaesthetic agents were injected and changes in the urine flow, sodium and potassium excre...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1985.tb02311.x
更新日期:1985-03-01 00:00:00
abstract::1. The recognition of the role of insulin resistance in disease states and the recent development of new drugs that modify insulin-dependent metabolism has led to increased use of the euglycaemic hyperinsulinaemic clamp to measure in vivo insulin sensitivity, but several key aspects of the technique are poorly documen...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1997.tb01237.x
更新日期:1997-07-01 00:00:00
abstract::Despite the presence of many studies on the role of mechanistic target of rapamycin (mTOR) in cardiorenal tissues, the definitive role of mTOR in the pathogenesis of renal injury subsequent to ischaemia-reperfusion (IR) remains unclear. The aims of the current study were to characterize the role of mTOR in normal kidn...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12648
更新日期:2016-11-01 00:00:00
abstract::1. The aim of the present study was to assess the bioequivalence of two cefadroxil products, namely Ultracef (a reference product) in the form of a 500 mg capsule (produced by Bristol-Myers Squibb Laboratories, Princeton, NJ, USA) and Roxil (a test product) in the form of a 500 mg capsule (produced by Tabuk Pharmaceut...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1111/j.1440-1681.2004.04012.x
更新日期:2004-07-01 00:00:00
abstract::1. The Type 2C protein phosphatases (PP2C) represent a highly conserved gene family in the mammalian genome. Recent studies have revealed that PP2C isoforms possess unique patterns of tissue and subcellular distribution associated with diverse functionalities. 2. The functional importance of PP2C isoforms has been sho...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1681.2007.04843.x
更新日期:2008-02-01 00:00:00
abstract::Clinical studies showed that high doses of recombinant human erythropoietin (rHuEPO) used to correct anaemia in chronic kidney disease (CKD) hyporesponsive patients may lead to deleterious effects. The aim of this study was to analyze the effects of rHuEPO in doses usually used to correct CKD-anaemia (100, 200 IU/kg b...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12541
更新日期:2016-03-01 00:00:00
abstract::Spinal cord injury (SCI) is a major disability requiring more effective treatment than is currently available. MicroRNAs have been shown to effectively regulate gene expression at the translational level. The aim of the present study was to explore the potential role of miR-30-5p and possible mechanism in SCI. We foun...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12856
更新日期:2018-01-01 00:00:00
abstract::1. The effect of cicletanine, a novel antihypertensive agent with natriuretic activity, on blood pressure and progression of renal failure of 5/6 nephrectomized spontaneously hypertensive rats with salt loading was examined. 2. All nephrectomized rats were randomly assigned to one of four groups and their diet was cha...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1046/j.1440-1681.1999.03021.x
更新日期:1999-03-01 00:00:00
abstract::1. Quantitative autoradiography and homogenate radioligand binding of [125I]-Bolton Hunter substance P ([125I]-BHSP) were used to compare brain NK1 receptors in young (2 months) and aged (18-20 months) rats. 2. The autoradiographic distribution and density of [125I]-BHSP binding sites was similar in all cortical regio...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1046/j.1440-1681.2002.03781.x
更新日期:2002-12-01 00:00:00
abstract::1. The object of this study was to determine whether meat protein per se is responsible for the higher blood pressures (BP) in omnivores compared with vegetarians. 2. Assessments were made by a double blind randomized control trial in 64 normotensive volunteers recruited from Royal Perth Hospital staff. 3. All volunte...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1111/j.1440-1681.1987.tb00368.x
更新日期:1987-03-01 00:00:00
abstract::The activation of inactive renin during incubation of human plasma with puff adder venom at pH 7.4 was found to be a complex process. Gel filtration on Sephacryl S-200 indicated that the venom contains a major peak of caseinolytic and renin-activating activity of low molecular weight. This enzyme was a metalloproteina...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1980.tb00112.x
更新日期:1980-09-01 00:00:00
abstract::1. Ischaemia-reperfusion (IR) injury is an important contributor to tissue damage and has been shown to be attenuated by preconditioning (PC) in some animal models. A recent report has suggested that the forearm can be used for the study of this phenomenon in humans. We aimed to reproduce and further characterize this...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 临床试验,杂志文章
doi:10.1111/j.1440-1681.2005.04163.x
更新日期:2005-01-01 00:00:00
abstract::Apelin receptors (APJ) cross-talk with other G-protein-coupled receptors. However, the role of APJ interaction with opioid receptors (OPR) on the cardiovascular effects of apelin in hypertension is not clear. Renovascular hypertension was induced by placing a Plexiglas clip on the left kidney of rats. After 16 weeks, ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12860
更新日期:2018-02-01 00:00:00
abstract::1. Synthetic human endothelin was injected intravenously over the range 1.5-50 micrograms to examine its cardiovascular actions in conscious sheep. 2. Mean arterial pressure increased by 9-21 mmHg within 30-120 s over the range 5-50 micrograms endothelin. The increase in blood pressure was associated with increased ca...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1989.tb01549.x
更新日期:1989-04-01 00:00:00
abstract::1. Tetramethylpyrazine (TMP) is one of the active principles contained in Ligusticum chuanxiong Hort. (Umbelliferae), a herb that has been used widely in China to treat vascular disorders. 2. In an attempt to elucidate the possible mechanisms of action of TMP, the effect of TMP on intracellular calcium concentrations ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1046/j.1440-1681.2003.03913.x
更新日期:2003-10-01 00:00:00
abstract::1. The effects of dietary sodium on blood pressure and levels of sodium, other electrolytes and noradrenaline (NA) in the cerebrospinal fluid (CSF) and blood of 15 patients with essential hypertension were studied. The CSF and blood sampling was carried out after 7 days of a high salt intake (16-18 g/day) and after 7 ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1992.tb00444.x
更新日期:1992-04-01 00:00:00
abstract::1. The neuronal release of acetylcholine (ACh) and its autoregulation by neuromodulators, substance P (SP) and methionine enkephalin (MEK), have been studied using superfused rodent cerebral slices. Nicotine exerts significant effects on autoregulation of ACh release, which may have toxicological implications. 2. Posi...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1681.1995.tb01997.x
更新日期:1995-04-01 00:00:00
abstract::1. Deposition of β-amyloid (Aβ) peptide is a defining pathological hallmark of Alzheimer's disease (AD) and is involved in memory impairment. Evidence suggests that activation of an extracellular signal-regulated kinase (ERK) pathway is related to Aβ accumulation. Thus, the aim of the present study was to investigate ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2012.12000.x
更新日期:2012-10-01 00:00:00
abstract::1. Ambulatory monitoring provides a unique opportunity for studying the temporal relationships between lifestyle factors and blood pressure (BP). These include physical activity, mental activity, environmental stressors, substances ingested for pleasure such as smoking, alcohol and caffeine, and nutrition. 2. Changes ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1681.1995.tb01986.x
更新日期:1995-03-01 00:00:00
abstract::1. Adrenocorticotrophin (ACTH) administration to sheep produces a rapid adrenally dependent hypertension which is maximal after 3 days and associated with increased cardiac output (CO) and heart rate (HR), while calculated total peripheral resistance remains unchanged. 2. This study investigated the proposal that a ce...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1989.tb01611.x
更新日期:1989-07-01 00:00:00
abstract::1. Previous studies have demonstrated progressive ventricular hypertrophy, dilatation and contractile depression in response to chronic volume overload. Whether this decompensation was related to intrinsic myocyte dysfunction was not clear. The present study evaluated ventricular myocyte function at critical times dur...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2008.04923.x
更新日期:2008-07-01 00:00:00
abstract::The possibility that serotonin (5HT) nerve endings in the dorsomedial medulla oblongata participate in the control of blood pressure was investigated in stroke-prone hypertensive rats and in normotensive rats. 5HT nerves were destroyed by injecting 5,7-dihydroxytryptamine bilaterally into the solitary tract nucleus. I...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1983.tb00196.x
更新日期:1983-05-01 00:00:00
abstract::1. Phytoncides are volatile substances released mainly from trees. We studied whether phytoncides can reduce stress responses in stroke-prone spontaneously hypertensive rats (SHRSP). 2. Under the restraint stress, SHRSP exposed to phytoncides showed lower blood pressure than those without the exposure (186.8 +/- 3.9 v...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2004.04102.x
更新日期:2004-12-01 00:00:00
abstract::1. The effects of clomiphene (CLM) on cardiac outward K+ current components from rat isolated ventricular myocytes were investigated using the whole-cell patch-clamp technique. Clomiphene (10 micromol/L) significantly inhibited both peak (Ipeak) and end-pulse (Ilate) outward currents (elicited by a 500 msec voltage st...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2004.03956.x
更新日期:2004-01-01 00:00:00