Drug effects on orthostatic intolerance induced by bedrest.

Abstract:

:Effective and practical preventive procedures for postflight orthostatic intolerance are highly desirable. The current practice of attempts to expand plasma volume by ingestion of salt and fluids before reentry has proven benefits. This study evaluated alternative options using fludrocortisone (F) to expand plasma volume (PV), dextroamphetamine (Dex) to enhance norepinephrine (NE) release and atropine (A) to reduce the effects of vagal stimulation. Seven subjects with proven post-bedrest orthostatic intolerance returned for a 7-day 6 degrees head-down bedrest study. F (0.2 mg) was given at 8:00 AM and 8:00 PM the day before and 8:00 AM the day the subjects got out of bed (2 hours before standing). PV was measured before and 1 hour after the last dose of F. D (5 mg) and A (0.8 mg) were then taken orally 1 hour before the stand test. F expanded PV by 16% and caused sodium retention. Four of the 7 subjects stood for 1 hour post-bedrest and HR, plasma NE and PRA responses to standing were greatly enhanced and sustained. Although there was a narrowing of pulse pressure, the ability to overcome orthostatic intolerance with these countermeasures was largely due to vasoconstriction and sustained high heart rate. The existing literature on pharmacologic countermeasures for post-flight and post-bedrest orthostatic hypotension is reviewed, and the results are discussed in that context.

journal_name

J Clin Pharmacol

authors

Vernikos J,Dallman MF,Van Loon G,Keil LC

doi

10.1002/j.1552-4604.1991.tb03659.x

subject

Has Abstract

pub_date

1991-10-01 00:00:00

pages

974-84

issue

10

eissn

0091-2700

issn

1552-4604

journal_volume

31

pub_type

杂志文章
  • The recruitment of normal healthy volunteers: a review of the literature on the use of financial incentives.

    abstract::Unresolved issues of ethical, methodological, and legal concerns in the use of normal healthy volunteers persist. Financial incentives in their recruitment offer a unique ethical dilemma because of questions surrounding payment. A review of literature was conducted to obtain research systematically examining volunteer...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章,评审

    doi:

    authors: Tishler CL,Bartholomae S

    更新日期:2002-04-01 00:00:00

  • Intense surveillance of adverse drug reactions. An analysis of 338 patients.

    abstract::A prospective study of adverse drug reactions was recently completed at the Clinical Pharmacology Unit of J. J. Group of Hospitals. 338 patients were included in this study, and adverse reactions were noted by a team of workers including a nurse and a physician. World Health Organization definitions were used to descr...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1002/j.1552-4604.1975.tb02365.x

    authors: Vakil BJ,Kulkarni RD,Chabria NL,Chadha DR,Deshpande VA

    更新日期:1975-05-01 00:00:00

  • Pharmacokinetics of didanosine and ketoconazole after coadministration to patients seropositive for the human immunodeficiency virus.

    abstract::The steady-state pharmacokinetics of didanosine (DDI) and ketoconazole (KET) were evaluated when the agents were administered alone or concurrently to patients seropositive for the human immunodeficiency virus. Using a randomized, three-way crossover design, multiple oral doses of DDI (375 mg twice daily for 4 days), ...

    journal_title:Journal of clinical pharmacology

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1002/j.1552-4604.1993.tb01921.x

    authors: Knupp CA,Brater DC,Relue J,Barbhaiya RH

    更新日期:1993-10-01 00:00:00

  • Enhanced sensitivity to drug-induced QT interval lengthening in patients with heart failure due to left ventricular systolic dysfunction.

    abstract::Patients with heart failure (HF) are at increased risk for drug-induced torsades de pointes (TdP) due to unknown mechanisms. Our objective was to determine if sensitivity to drug-induced QT interval lengthening is enhanced in patients with HF. In this multicenter, prospective study, 15 patients with atrial fibrillatio...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1177/0091270011416939

    authors: Tisdale JE,Overholser BR,Wroblewski HA,Sowinski KM,Amankwa K,Borzak S,Kingery JR,Coram R,Zipes DP,Flockhart DA,Kovacs RJ

    更新日期:2012-09-01 00:00:00

  • Interaction between propranolol and propafenone in healthy volunteers.

    abstract::The effects of propafenone on the pharmacokinetics and pharmacodynamics of propranolol were evaluated in 12 healthy male subjects. Both propafenone and propranolol were each administered alone for one week followed by concomitant administration for an additional week. Blood samples, obtained at steady-state, were anal...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1002/j.1552-4604.1989.tb03373.x

    authors: Kowey PR,Kirsten EB,Fu CH,Mason WD

    更新日期:1989-06-01 00:00:00

  • Influence of Panax ginseng on cytochrome P450 (CYP)3A and P-glycoprotein (P-gp) activity in healthy participants.

    abstract::A number of herbal preparations have been shown to interact with prescription medications secondary to modulation of cytochrome P450 (CYP) and/or P-glycoprotein (P-gp). The purpose of this study was to determine the influence of Panax ginseng on CYP3A and P-gp function using the probe substrates midazolam and fexofena...

    journal_title:Journal of clinical pharmacology

    pub_type: 临床试验,杂志文章

    doi:10.1177/0091270011407194

    authors: Malati CY,Robertson SM,Hunt JD,Chairez C,Alfaro RM,Kovacs JA,Penzak SR

    更新日期:2012-06-01 00:00:00

  • Measurement of antipyretic activity of ibuprofen and paracetamol in children.

    abstract::The antipyretic activity of ibuprofen (Brufen) and paracetamol (Crocin) was compared in 22 children with pyrexia who received either ibuprofen or paracetamol in syrup form. Both axillary and rectal temperatures were recorded prior to drug administration and 1/2, 1, 2, 3, 4, 5, 6, 8, and 12 hours after dosing. Analysis...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1002/j.1552-4604.1980.tb01685.x

    authors: Sheth UK,Gupta K,Paul T,Pispati PK

    更新日期:1980-11-01 00:00:00

  • Bumetanide: a new diuretic. Results of clinical efficacy and safety in patients with congestive heart failure.

    abstract::A clinical study of bumetanide, a new diuretic, was conducted in outpatients of a cardiology clinic to determine its long-term effectiveness and safety in the treatment of peripheral edema due to congestive heart failure. The drug was administered for at least 24 weeks on a selected group of 34 patients. The patients ...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1002/j.1552-4604.1981.tb05685.x

    authors: Handler B,Dhingra RC,Rosen KM

    更新日期:1981-11-01 00:00:00

  • The pharmacokinetics of sodium oxybate oral solution following acute and chronic administration to narcoleptic patients.

    abstract::This trial was conducted to evaluate the pharmacokinetics and safety of a sodium oxybate (gamma-hydroxybutyrate [GHB]) oral solution in narcoleptic patients after acute and chronic treatment. An open-label, two-period, two-treatment study design was used. Trial subjects included 13 patients with polysomnographically c...

    journal_title:Journal of clinical pharmacology

    pub_type: 临床试验,杂志文章

    doi:10.1177/0091270003262795

    authors: Borgen LA,Okerholm RA,Lai A,Scharf MB

    更新日期:2004-03-01 00:00:00

  • Pilot Study of Peak Plasma Concentration After High-Dose Oral Montelukast in Children With Acute Asthma Exacerbations.

    abstract::Acute asthma exacerbations are primarily due to airway inflammation and remain one of the most frequent reasons for childhood hospitalizations. Although systemic corticosteroids remain the mainstay of therapy because of their anti-inflammatory properties, not all inflammatory pathways are responsive to systemic cortic...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1002/jcph.1738

    authors: Arnold DH,Van Driest SL,Reiss TF,King JC,Akers WS

    更新日期:2021-03-01 00:00:00

  • Pharmacokinetics and pharmacodynamics of metformin in healthy subjects and patients with noninsulin-dependent diabetes mellitus.

    abstract::This study was conducted to assess the effect of noninsulin-dependent diabetes mellitus (NIDDM) and gender on the pharmacokinetics of metformin and to investigate whether or not metformin exhibits dose-dependent pharmacokinetics. The pharmacodynamic effects (on plasma glucose and insulin) of metformin in patients with...

    journal_title:Journal of clinical pharmacology

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1177/009127009603601105

    authors: Sambol NC,Chiang J,O'Conner M,Liu CY,Lin ET,Goodman AM,Benet LZ,Karam JH

    更新日期:1996-11-01 00:00:00

  • Cytochrome P450 Genetic Variations Can Predict mRNA Expression, Cyclophosphamide 4-Hydroxylation, and Treatment Outcomes in Chinese Patients With Non-Hodgkin's Lymphoma.

    abstract::To investigate the impact of cytochrome P450 (CYP) genetic polymorphisms CYP2B6, CYP2C19, and CYP3A5 on mRNA expression, cyclophosphamide/4-hydroxycyclophosphamide pharmacokinetics, and treatment outcomes of the R-CHOP regimen (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone) in Chinese patients ...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1002/jcph.878

    authors: Shu W,Chen L,Hu X,Zhang M,Chen W,Ma L,Liu X,Huang J,Pang T,Li J,Zhang Y

    更新日期:2017-07-01 00:00:00

  • Model-Based Selection and Recommendation for Subcutaneous Abatacept Dose in Patients With Polyarticular Juvenile Idiopathic Arthritis.

    abstract::The selective T-cell costimulation modulator abatacept is approved for treatment of adult rheumatoid arthritis (RA) and polyarticular juvenile idiopathic arthritis (pJIA; 6-17 years [intravenous] and 2-17 years [subcutaneous]). An extrapolation approach was taken to determine subcutaneous weight-tiered doses of abatac...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1002/jcph.1797

    authors: Gandhi Y,Passarell JA,Roy A,Murthy B

    更新日期:2020-12-07 00:00:00

  • Single-dose and steady-state pharmacokinetic and pharmacodynamic evaluation of therapeutically clinically equivalent doses of inhaled fluticasone propionate and budesonide, given as Diskus or Turbohaler dry-powder inhalers to healthy subjects.

    abstract::Direct comparisons of the pharmacokinetic (PK) and systemic pharmacodynamic (PD) properties of inhaled corticosteroids after single and multiple dosing in the same subjects are scarce. The objective of this study was to compare thePK/PDproperties of clinically equivalent, single, and multiple doses of dry-powder formu...

    journal_title:Journal of clinical pharmacology

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1177/00912700122012913

    authors: Möllmann H,Wagner M,Krishnaswami S,Dimova H,Tang Y,Falcoz C,Daley-Yates PT,Krieg M,Stöckmann R,Barth J,Lawlor C,Möllmann AC,Derendorf H,Hochhaus G

    更新日期:2001-12-01 00:00:00

  • Semimechanistic model describing gastric emptying and glucose absorption in healthy subjects and patients with type 2 diabetes.

    abstract::The integrated glucose-insulin (IGI) model is a previously published semimechanistic model that describes plasma glucose and insulin concentrations after glucose challenges. The aim of this work was to use knowledge of physiology to improve the IGI model's description of glucose absorption and gastric emptying after t...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1002/jcph.602

    authors: Alskär O,Bagger JI,Røge RM,Knop FK,Karlsson MO,Vilsbøll T,Kjellsson MC

    更新日期:2016-03-01 00:00:00

  • Methemoglobin levels produced by organic nitrates in patients with coronary artery disease.

    abstract::To determine if ordinary doses of nitrates produce a significant increase in methemoglobin, methemoglobin levels were measured in 59 randomly selected patients with coronary artery disease and unstable angina pectoris who were receiving organic nitrate therapy. Patients were taking isosorbide dinitrate, 2% nitroglycer...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1002/j.1552-4604.1984.tb01825.x

    authors: Arsura E,Lichstein E,Guadagnino V,Nicchi V,Sanders M,Hollander G,Greengart A

    更新日期:1984-04-01 00:00:00

  • Absence of effect of telbivudine on cardiac repolarization: results of a thorough QT/QTc study in healthy participants.

    abstract::The effect of telbivudine on cardiac repolarization was evaluated in healthy participants at clinical and supratherapeutic doses. Sixty-two participants were enrolled, stratified by sex, and randomized according to a crossover design among 4 treatment sequences: placebo, a single moxifloxacin 400-mg dose as positive c...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章,随机对照试验

    doi:10.1177/0091270009337943

    authors: Poordad F,Zeldin G,Harris SI,Ke J,Xu L,Mayers D,Zhou XJ

    更新日期:2009-12-01 00:00:00

  • Efficacy of cardioselective beta-adrenergic blockade with intravenously administered metoprolol in the treatment of supraventricular tachyarrhythmias.

    abstract::The efficacy of intravenously administered metoprolol, a cardioselective beta-adrenergic blocking agent, was evaluated in the treatment of supraventricular tachyarrhythmias in 16 patients. The arrhythmias that were treated were atrial fibrillation (11 patients), atrial flutter (2 patients), supraventricular tachycardi...

    journal_title:Journal of clinical pharmacology

    pub_type: 临床试验,杂志文章

    doi:10.1002/j.1552-4604.1991.tb03765.x

    authors: Amsterdam EA,Kulcyski J,Ridgeway MG

    更新日期:1991-08-01 00:00:00

  • No effect of rosuvastatin on the pharmacokinetics of digoxin in healthy volunteers.

    abstract::The effect of rosuvastatin on the pharmacokinetics of digoxin was assessed in 18 healthy male volunteers in this double-blind, randomized, two-way crossover trial. Volunteers were dosed with rosuvastatin (40 mg once daily) or placebo to steady state before being given a single dose of digoxin 0.5 mg. Blood and urine s...

    journal_title:Journal of clinical pharmacology

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1177/0091270002042012008

    authors: Martin PD,Kemp J,Dane AL,Warwick MJ,Schneck DW

    更新日期:2002-12-01 00:00:00

  • Commentary on the FDA draft guidance for bioequivalence studies for nasal aerosols and nasal sprays for local action: an industry view.

    abstract::In June 1999, the Food and Drug Administration issued draft guidance for bioequivalence studies for nasal aerosols and nasal sprays for local action. The purpose of this opinion paper is to highlight the need for a balanced scientific debate before this guidance is used by underscoring the areas in the document that a...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1177/00912700022009440

    authors: Harrison LI

    更新日期:2000-07-01 00:00:00

  • Clinical pharmacology of centrally acting antihypertensive agents.

    abstract::The centrally acting agents are one of several differing classes of drugs now available for antihypertensive therapy. The availability of newer pharmacologic classes, including the beta-blockers, alpha-blockers. ACE inhibitors and calcium channel blockers, has resulted in a relative decline in the use of the centrally...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章,评审

    doi:10.1002/j.1552-4604.1989.tb03387.x

    authors: Weber MA

    更新日期:1989-07-01 00:00:00

  • Population pharmacokinetic analysis of Ibuprofen enantiomers in preterm newborn infants.

    abstract::The aim of this pharmacokinetic analysis was to develop and validate a population pharmacokinetic model for R- and S-ibuprofen from samples obtained after 3 successive administrations of ibuprofen (10-5-5 mg/kg) at 24-hour intervals to preterm newborn infants aged from <6 hours to 8 days of life. A model including uni...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1177/0091270008323752

    authors: Gregoire N,Desfrere L,Roze JC,Kibleur Y,Koehne P

    更新日期:2008-12-01 00:00:00

  • Exposure-dependent inhibition of intestinal and hepatic CYP3A4 in vivo by grapefruit juice.

    abstract::Consumption of typical quantities of grapefruit juice (GFJ) increases the oral bioavailability of several CYP3A4 substrates without affecting their elimination, consistent with selective inhibition of intestinal but not hepatic CYP3A4. However, increases in the AUCs of CYP3A4 substrates recently associated with the co...

    journal_title:Journal of clinical pharmacology

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1177/0091270003256059

    authors: Veronese ML,Gillen LP,Burke JP,Dorval EP,Hauck WW,Pequignot E,Waldman SA,Greenberg HE

    更新日期:2003-08-01 00:00:00

  • Comparative inhibitory activity of rofecoxib, meloxicam, diclofenac, ibuprofen, and naproxen on COX-2 versus COX-1 in healthy volunteers.

    abstract::Steady-state inhibitory activity of rofecoxib (Vioxx) on COX-2 versus COX-1 was compared with that of commonly used nonsteroidal anti-inflammatory drugs (NSAIDs) in 76 healthy volunteers randomized to placebo, rofecoxib 12.5 mg qd, rofecoxib 25 mg qd, diclofenac 50 mg tid, ibuprofen 800 mg tid, sodium naproxen 550 mg ...

    journal_title:Journal of clinical pharmacology

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:

    authors: Van Hecken A,Schwartz JI,Depré M,De Lepeleire I,Dallob A,Tanaka W,Wynants K,Buntinx A,Arnout J,Wong PH,Ebel DL,Gertz BJ,De Schepper PJ

    更新日期:2000-10-01 00:00:00

  • Long-duration +Gz acceleration on cardiac volumes determined by two-dimensional echocardiography.

    abstract::To enhance protection of humans exposed to long-duration low-gravity environments such as the Space Shuttle and National Aerospace Plane during re-entry or in the short-duration high(-)+Gz environment of fighter aircraft, the effects of +Gz acceleration on cardiovascular hemodynamics must be understood. This study rep...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1002/j.1552-4604.1994.tb04991.x

    authors: Tripp LD,Jennings TJ,Seaworth JF,Howell LL,Goodyear C

    更新日期:1994-05-01 00:00:00

  • Pharmacokinetic/pharmacodynamic modeling of pegfilgrastim in healthy subjects.

    abstract::This analysis was conducted to characterize the pharmacokinetics and pharmacodynamics of pegfilgrastim and to develop a pharmacokinetic-pharmacodynamic model to describe the granulopoietic effects of pegfilgrastim and the homeostatic regulation of pegfilgrastim clearance in healthy subjects. Pegfilgrastim serum concen...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1177/0091270006288731

    authors: Roskos LK,Lum P,Lockbaum P,Schwab G,Yang BB

    更新日期:2006-07-01 00:00:00

  • Once-daily verapamil in the treatment of mild-to-moderate hypertension: a double-blind placebo-controlled dose-ranging study.

    abstract::Supine office blood pressures (SOBP) and 24-hour automated ambulatory blood pressure monitorings (AABPM) showed blood pressure reductions from a stable baseline to active treatment with 120-, 240-, and 480-mg doses of a new verapamil QD capsule (solid-spheroidal-oral once-daily drug-absorption system: (SODAS) in patie...

    journal_title:Journal of clinical pharmacology

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1002/j.1552-4604.1991.tb03698.x

    authors: Carr AA,Bottini PB,Prisant LM,Fisher LD,Devane JG,O'Brien DE,Rhoades RB

    更新日期:1991-02-01 00:00:00

  • Primary care physicians and the cost of drugs: a study of prescribing practices based on recognition and information sources.

    abstract::Rapidly inflating health care costs limit patient care, and prescription drug costs constitute a major component of this expenditure. This study examines attitudes toward and knowledge of prescription drug costs of primary care physicians. Access to information about drug costs and implications for medical education a...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章

    doi:10.1002/j.1552-4604.1994.tb04726.x

    authors: Walzak D,Swindells S,Bhardwaj A

    更新日期:1994-12-01 00:00:00

  • Short-term effects of cannabinoids on immune phenotype and function in HIV-1-infected patients.

    abstract::Cannabinoids, including smoked marijuana and delta9-tetrahydrocannabinol (THC) (dronabinol, Marinol), have been used to treat human immunodeficiency virus-1 (HIV)-associated anorexia and weight loss. Concerns have been raised, however, that these compounds might have adverse effects on the immune system of subjects wi...

    journal_title:Journal of clinical pharmacology

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1002/j.1552-4604.2002.tb06007.x

    authors: Bredt BM,Higuera-Alhino D,Shade SB,Hebert SJ,McCune JM,Abrams DI

    更新日期:2002-11-01 00:00:00

  • Lack of a pharmacokinetic effect of raltegravir on midazolam: in vitro/in vivo correlation.

    abstract::Raltegravir is a novel HIV-1 integrase inhibitor with potent in vitro activity (95% inhibitory concentration = 33 nM in 50% human serum). In vitro characterization of raltegravir inhibition potential was assessed against a panel of cytochrome P450 (CYP) enzymes. An open-label, 2-period study was conducted to assess th...

    journal_title:Journal of clinical pharmacology

    pub_type: 杂志文章,随机对照试验

    doi:10.1177/0091270007310382

    authors: Iwamoto M,Kassahun K,Troyer MD,Hanley WD,Lu P,Rhoton A,Petry AS,Ghosh K,Mangin E,DeNoia EP,Wenning LA,Stone JA,Gottesdiener KM,Wagner JA

    更新日期:2008-02-01 00:00:00