Abstract:
:1. It is a central thesis of this review that in clinical and experimental pharmacology and physiology the goal of statistical analysis should be to minimize the risk of making any false-positive inferences from the results of an experiment (experimentwise Type I error). 2. It is common in clinical and experimental pharmacology and physiology for the effects of several treatments to be tested within a single experiment. Specific intercomparisons of these several effects, made in a pairwise or more complex fashion, inflates the risk of making false-positive inferences unless special statistical procedures are used. 3. A number of multiple comparison procedures is described and their ability to control experimentwise Type I error is evaluated critically. 4. When only a few (less than 5) of all possible pairwise or more complex comparisons are made between treatment groups, the Dunn-Sidák procedure provides maximum protection against excessive experimentwise Type I error and is very convenient to use. 5. When a control group is compared with all other treatment groups in a pairwise fashion, especially when the number of groups is large, the Dunnett procedure is more powerful than the Dunn-Sidák. 6. If investigators insist on making all possible pairwise comparisons among treatment groups, the Tukey-Kramer procedure provides maximum protection against false-positive inferences but inflates the Type II error rate. If it is especially important to avoid Type II error then the more complicated, stepwise procedures of the Ryan-Peritz-Welsch variety should be considered.
journal_name
Clin Exp Pharmacol Physioljournal_title
Clinical and experimental pharmacology & physiologyauthors
Ludbrook Jdoi
10.1111/j.1440-1681.1991.tb01468.xsubject
Has Abstractpub_date
1991-06-01 00:00:00pages
379-92issue
6eissn
0305-1870issn
1440-1681journal_volume
18pub_type
社论,评审abstract::1. Infusion of increasing doses of angiotensin II (AII) in normal subjects sequentially increased blood pressure, aldosterone and atrial natriuretic peptide (ANP) levels. 2. The slope of ANP response to AII was positively correlated with basal ANP and with the slope of blood pressure response to AII (pressor slope) bu...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1993.tb01714.x
更新日期:1993-05-01 00:00:00
abstract::1. Responses of splenic diameter measured by sonomicrometry to alpha- and beta-adrenoceptor stimulants were estimated together with simultaneously measured systemic arterial and splenic venous concentrations of red blood cells (RBC), white blood cells (WBC) and platelets (PLT) in anaesthetized dogs. 2. Intravenous and...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1046/j.1440-1681.2002.03598.x
更新日期:2002-01-01 00:00:00
abstract::1. Measurements were made on blood pH, PCO2 and PO2 in mice after a single injection and following five weeks continuous clonidine hydrochloride treatment. 2. A single injection of clonidine hydrochloride exerts no effect on blood pH, PCO2 and PO2 but five weeks of continuous clonidine hydrochloride treatment lowers t...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1982.tb00840.x
更新日期:1982-11-01 00:00:00
abstract::1. There is mounting evidence that a wide range of antidepressants share the common feature of increasing hippocampal neurogenesis. The specificity of this association has suggested that an ability to increase neurogenesis might be a useful paradigm to screen for compounds with antidepressant activity. 2. The hope of ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1681.2007.04608.x
更新日期:2007-05-01 00:00:00
abstract::1. The turnover rate of inositol(1,4,5)trisphosphate (Ins(1,4,5)P3) in noradrenaline-stimulated adult rat left atria was calculated from changes in specific activity and was found to equal 110 ct/min per mg tissue. In contrast, the isomers of inositol mono- and bisphosphates accumulated at a rate of 508 ct/min per mg....
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1993.tb01698.x
更新日期:1993-05-01 00:00:00
abstract::1. The present study aimed to determine the feasibility of conducting a 5 year cardiovascular outcome trial of the treatment of 6000 elderly hypertensive patients in Australian general practices. 2. General practitioners (GPs) were invited to participate by mail and personal follow-up. Patient records were reviewed to...
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.1440-1681.1997.tb01204.x
更新日期:1997-05-01 00:00:00
abstract::The P2X7 receptor is a ligand-gated purinergic receptor activated by extracellular ATP. The receptor is highly expressed in immune cells and in the brain, and, upon activation, the P2X7 receptor allows a cation flux, leading to the distinct activation of intracellular signalling pathways as the secretion of pro-inflam...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/1440-1681.13079
更新日期:2019-06-01 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::1. At any one instant, most receptors are now recognized to be able to stimulate multiple signal transduction pathways in a cell when activated by an appropriate hormone. These different signalling pathways appear to allow for distinct cellular responses, such as cell proliferation, differentiation, and shape change. ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1681.1997.tb02104.x
更新日期:1997-08-01 00:00:00
abstract::1. Plasma concentration and atrial content of atrial natriuretic factor (ANF) were measured in rats with chronic renal failure induced by subtotal nephrectomy. 2. Plasma ANF was higher, and atrial ANF content lower in rats with renal failure when compared with sham-operated controls. 3. Plasma renin activity (PRA) and...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1987.tb00384.x
更新日期:1987-03-01 00:00:00
abstract::1. RNA interference in vivo has tremendous potential, both with respect to the elucidation of protein function in animals and as a therapeutic platform in humans. In vitro, short interfering RNA (siRNA) has been shown to completely silence gene expression in mammalian cells at low picomolar concentrations. 2. Although...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1681.2008.04992.x
更新日期:2008-11-01 00:00:00
abstract::1. Renin is highly expressed in submandibular gland (SMG) of mouse, which has two genes, Ren-1d and Ren-2d, but not at all in rat SMG. Differences in nuclear protein binding to renin promoter DNA were, therefore, explored. 2. Rat -169 to +23 renin DNA formed complexes with both mouse and rat extract, whereas a corresp...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1993.tb01684.x
更新日期:1993-05-01 00:00:00
abstract::Pressor responsiveness to angiotensin II (AII) and phenylephrine (PE) was examined before and after 5 days of ACTH (1 mg, i.m., daily) or hydrocortisone (200 mg, orally, daily) in six normotensive men. Pulse pressure was higher prior to PE than AII infusion, presumably due to feeding. Systolic blood pressure (SBP) was...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1986.tb00362.x
更新日期:1986-04-01 00:00:00
abstract::1. Mammalian heart muscle is extremely sensitive to the external calcium concentration. It reacts to alterations of the external calcium concentration with an immediate adaptation of contractile force. 2. In mammalian heart there is a network of large transverse tubules throughout the cell. These structures are regula...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1681.1977.tb02377.x
更新日期:1977-01-01 00:00:00
abstract::Rutaecarpine is a major alkaloid isolated from Evodia rutaecarpa. Here, we investigated the effects of rutaecarpine on osteoclast differentiation induced by macrophage colony stimulating factor (M-CSF) and receptor activator of nuclear factor κ-B ligand (RANKL) in bone marrow-derived macrophages (BMMs). Treatment with...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 信件
doi:10.1111/1440-1681.12941
更新日期:2018-08-01 00:00:00
abstract::1. The endogenous production of and/or the bioavailability of nitric oxide (NO) is decreased in pulmonary hypertensive diseases. L-arginine (L-arg) is the substrate for NO synthase (NOS). L-arg is transported into cells via the cationic amino acid transporters (CAT), of which there are two isoforms in endothelial cell...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2011.05609.x
更新日期:2011-12-01 00:00:00
abstract::Central administration of choline increases blood pressure in normotensive and hypotensive states by increasing plasma concentrations of vasopressin and catecholamines. We hypothesized that choline could also modulate the renin-angiotensin pathway, the third main pressor system in the body. Plasma renin activity (PRA)...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2008.04978.x
更新日期:2008-09-01 00:00:00
abstract::1. The purpose of the present study was to investigate whether there was a cooperative interaction between substance P (SP) and glutamate (GLU) administered subcutaneously on Adelta and C primary afferent fibre activity in dorsal hairy skin of the rat in vivo. The single unit activities of Adelta and C afferent fibres...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2006.04504.x
更新日期:2006-12-01 00:00:00
abstract::1. We have examined the question asked in the title by studying: the carotid baroreceptor reflex in man with a variable-pressure neck chamber; the carotid baroreceptor reflex in conscious rabbits with a variable-pressure capsule around the carotid bifurcation; and the barorecptor-heart rate reflex. 2. At rest, the ass...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1980.tb00099.x
更新日期:1980-09-01 00:00:00
abstract::1. The effects of 14 lignocaine homologues on the maximum upstroke velocity (Vmax) of the action potentials (AP) were studied in guinea-pig papillary muscles. These drugs possess one, two or three methyl groups in different positions: an ortho-chloro, -carbomethoxy or -ethyl group instead of an ortho-methyl group; or ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1992.tb00489.x
更新日期:1992-06-01 00:00:00
abstract::1. Epidemiological evidence indicates that low birthweight increases the risk of a number of adult-onset diseases. It is now apparent that many babies with a low birthweight may have been subjected to a combination of reduced growth rates in utero as well as preterm birth. However, the long-term effects of preterm bir...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1046/j.1440-1681.2001.03552.x
更新日期:2001-11-01 00:00:00
abstract::1. Rapid ventricular rate (VR) and rhythm irregularity during atrial fibrillation (AF) impair cardiac performance. Although digoxin has been widely used in patients with AF, its efficacy for the control of VR and rhythm irregularity is unsatisfactory. Whether low-dose amiodarone is more effective remains unclear. 2. W...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1046/j.1440-1681.2001.03454.x
更新日期:2001-05-01 00:00:00
abstract::This study tested the hypothesis that the initial fall in arterial pressure evoked by lipopolysaccharide (LPS) is mediated by the ventrolateral column of the midbrain periaqueductal gray region (vlPAG). To test this hypothesis, the local anaesthetic lidocaine (2%; 0.1 μL, 0.2 μL or 1.0 μL), the delta opioid receptor a...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12573
更新日期:2016-06-01 00:00:00
abstract::Although 7,8-dihydroxyflavone (7,8-DHF), a synthetic agonist specific for tyrosine kinase receptor B (TrkB), has been reported to promote intestinal dynamics, its effect on gastric dynamics has not been studied as yet. In this study, we explored how 7,8-DHF affected the carbachol (CCh)-induced contraction of rat gastr...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12999
更新日期:2018-11-01 00:00:00
abstract::1. Treatment with angiotensin converting enzyme (ACE) inhibitors ameliorates human and experimental diabetic nephropathy, possibly as a result of changes in angiotensin II (AngII) and/or bradykinin concentrations. However, ACE is an indiscriminate enzyme, which hydrolyses numerous vasoactive peptides at two catalytic ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1996.tb02795.x
更新日期:1996-06-01 00:00:00
abstract::Contrast media are considered to cause acute kidney injury by activating various factors that induce renal vasoconstriction. We analysed the renal microvascular haemodynamic response using the Doppler flow wire method. Then changes in urinary liver-type fatty acid-binding protein levels following contrast medium admin...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 信件
doi:10.1111/1440-1681.12653
更新日期:2016-11-01 00:00:00
abstract::1. To determine whether total interruption of the local cardiac renin-angiotensin system by angiotensin II (AngII) receptor antagonist limits myocardial ischaemia, intracoronary (i.c.) or intravenous (i.v.) infusion of AngII receptor antagonists was compared in ischaemic dogs. 2. Dogs subjected to 90 min coronary arte...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1998.tb02243.x
更新日期:1998-07-01 00:00:00
abstract::1. Medullary blood flow (MBF) is important in the long-term control of arterial pressure. However, it is unclear which vascular elements regulate MBF. 2. Exogenous endothelin (ET)-1 decreases cortical more than medullary blood flow. We hypothesized that ET-1 would therefore constrict afferent (AA) and efferent arterio...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.2004.04036.x
更新日期:2004-08-01 00:00:00
abstract::Preterm birth (PTB) is the single largest cause of death in infants and young children. The rate of PTB is significantly higher in male infants, particularly those that are born very preterm. Here we present evidence to suggest that the decidual renin-angiotensin system may play a role in inhibiting inflammation and m...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章,评审
doi:10.1111/1440-1681.12734
更新日期:2017-05-01 00:00:00
abstract::1. Pre- and postjunctional effects of endothelin (1-10 nmol/L) have been studied in the rabbit isolated ear artery and in rat isolated atria. 2. Endothelin produced concentration-dependent increases in arterial perfusion pressure, and had positive chronotropic and inotropic effects in rat atria. 3. Vasoconstrictor res...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1989.tb01548.x
更新日期:1989-04-01 00:00:00