Page last updated: 2024-11-08
serine and Dizzyness
serine has been researched along with Dizzyness in 1 studies
Serine: A non-essential amino acid occurring in natural form as the L-isomer. It is synthesized from GLYCINE or THREONINE. It is involved in the biosynthesis of PURINES; PYRIMIDINES; and other amino acids.
serine : An alpha-amino acid that is alanine substituted at position 3 by a hydroxy group.
Research Excerpts
Excerpt | Relevance | Reference |
"Parkinsonian patients with orthostatic hypotension and dizziness due to usual antiparkinson therapy have been treated with the precursor amino-acid of noradrenaline, DL-3,4-threo-dihydroxyphenylserine (DL-3,4-threo-DOPS)." | 3.66 | DL-3,4-threo-DOPS in Parkinson's disease: effects on orthostatic hypotension and dizziness. ( Birkmayer, G; Birkmayer, W; Lechner, H; Riederer, P, 1983) |
Research
Studies (1)
Timeframe | Studies, this research(%) | All Research% |
pre-1990 | 1 (100.00) | 18.7374 |
1990's | 0 (0.00) | 18.2507 |
2000's | 0 (0.00) | 29.6817 |
2010's | 0 (0.00) | 24.3611 |
2020's | 0 (0.00) | 2.80 |
Authors
Authors | Studies |
Birkmayer, W | 1 |
Birkmayer, G | 1 |
Lechner, H | 1 |
Riederer, P | 1 |
Clinical Trials (1)
Trial Overview
Trial | Phase | Enrollment | Study Type | Start Date | Status |
A Multi-center, Double-blind, Randomized, Parallel-Group, Placebo-Controlled Study to Assess the Clinical Effect of Droxidopa in the Treatment of Symptomatic Neurogenic Orthostatic Hypotension in Patients With Parkinson's Disease[NCT01176240] | Phase 3 | 225 participants (Actual) | Interventional | 2010-06-30 | Completed |
[information is prepared from clinicaltrials.gov, extracted Sep-2024] |
Trial Outcomes
306A Efficacy: Change in Orthostatic Hypotension Questionnaire Score (OHQ)
"The primary efficacy endpoint for 306A is the relative mean change in Orthostatic Hypotension Questionnaire (OHQ) composite score from baseline to end of study. The OHQ is the average of two sub-scales, the Orthostatic Hypotension Symptom Assessment Scale (OHSA) and the Orthostatic Hypotension Daily Activities Scale (OHDAS). Each asks the patient to rate their symptoms or disease impact over the past week. The OHSA sub-scale is the average of six items: 1) Dizziness, lightheadedness, feeling faint or feeling like you might black out; 2) Problems with vision; 3) Weakness; 4) Fatigue; 5) Trouble concentrating; and 6) Head/neck discomfort. The OHDAS sub-scale is the average of four items: 1) Standing for a short time; 2) Standing for a long time; 3) Walking for a short time; and 4) Walking for a long time. Each item is scored on a Likert scale from 0 to 10, with 10 being the most severe.~For the change from baseline, negative numbers represent improvement from baseline in OHQ score." (NCT01176240)
Timeframe: Baseline, Week 8
Intervention | units on a scale (Mean) |
---|
Droxidopa | -2.2 |
Placebo | -2.1 |
306A Efficacy: Patient Reported Falls
The total number of patient reported falls during the 8 week treatment period (NCT01176240)
Timeframe: Baseline, Week 8
Intervention | total falls per group (Number) |
---|
Droxidopa | 79 |
Placebo | 192 |
306B Efficacy: Change in Dizziness/Lightheadedness/Feeling Faint/Feeling Like You Might Black Out (OHSA Item 1)
OHSA item 1 scale range: 0 (none) -10 (worst), likert scale. Change: score at Week 1 minus score at baseline. A negative score indicates an improvement in symptoms during the double-blind randomized phase relative to value at baseline. (NCT01176240)
Timeframe: Baseline, Week1
Intervention | units on a scale (Mean) |
---|
Droxidopa | -2.3 |
Placebo | -1.3 |
306B Efficacy: Change in OHSA Item 1 From Baseline to Week 2 (Visit 5)
OHSA item 1 scale range: 0 (none) -10 (worst), likert scale. Change: score at Week 2 minus score at baseline. A negative score indicates an improvement in symptoms during the double-blind randomized phase relative to value at baseline. (NCT01176240)
Timeframe: Baseline, Week2
Intervention | units on a scale (Mean) |
---|
Droxidopa | -1.9 |
Placebo | -1.6 |
306B Efficacy: Change in OHSA Item 1 From Baseline to Week 4 (Visit 6)
OHSA item 1 scale range: 0 (none) -10 (worst), likert scale. Change: score at Week 4 minus score at baseline. A negative score indicates an improvement in symptoms during the double-blind randomized phase relative to value at baseline. (NCT01176240)
Timeframe: Baseline, Week4
Intervention | units on a scale (Mean) |
---|
Droxidopa | -2.0 |
Placebo | -1.5 |
306B Efficacy: Change in OHSA Item 1 From Baseline to Week 8 (Visit 7)
OHSA item 1 scale range: 0 (none) -10 (worst), likert scale. Change: score at Week 8 minus score at baseline. A negative score indicates an improvement in symptoms during the double-blind randomized phase relative to value at baseline. (NCT01176240)
Timeframe: Baseline, Week 8
Intervention | units on a scale (Mean) |
---|
Droxidopa | -2.1 |
Placebo | -1.5 |
306B Efficacy: Change in Orthostatic Hypotension Questionnaire Score (OHQ)
"The relative mean change in Orthostatic Hypotension Questionnaire (OHQ) composite score from baseline to end of study. The OHQ is the average of two sub-scales, the Orthostatic Hypotension Symptom Assessment Scale (OHSA) and the Orthostatic Hypotension Daily Activities Scale (OHDAS). Each asks the patient to rate their symptoms or disease impact over the past week. The OHSA sub-scale is the average of six items: 1) Dizziness, lightheadedness, feeling faint or feeling like you might black out; 2) Problems with vision; 3) Weakness; 4) Fatigue; 5) Trouble concentrating; and 6) Head/neck discomfort. The OHDAS sub-scale is the average of four items: 1) Standing for a short time; 2) Standing for a long time; 3) Walking for a short time; and 4) Walking for a long time. Each item is scored on a Likert scale from 0 to 10, with 10 being the most severe.~For the change from baseline, negative numbers represent improvement from baseline in OHQ score." (NCT01176240)
Timeframe: Baseline, Week 8
Intervention | units on a scale (Mean) |
---|
Droxidopa | -2.2 |
Placebo | -2.0 |
306B Efficacy: Change in Systolic Blood Pressure (SBP) Measurements Post Standing From Baseline to Week 1
Measure: Lowest standing systolic blood pressure reading of immediately post standing and 3 minutes post standing. Change: standing systolic blood pressure at Week 1 (Visit 4) minus standing systolic blood pressure at baseline. A positive score indicates an improvement in standing systolic blood pressure during the double-blind randomized phase relative to value at baseline. (NCT01176240)
Timeframe: Baseline, Week 1
Intervention | mmHg (Mean) |
---|
Droxidopa | 6.4 |
Placebo | 0.7 |
306B Efficacy: Rate of Patient Reported Falls
The average number of patient reported falls per week. (NCT01176240)
Timeframe: up to 10 weeks
Intervention | falls per week (Mean) |
---|
Droxidopa | 0.4 |
Placebo | 2.0 |
Study 306A: Change in Dizziness/Lightheadedness/Feeling Faint/Feeling Like You Might Black Out (OHSA Item 1) From Baseline to Week 1
OHSA item 1 scale range: 0 (none) -10 (worst), likert scale. Change: score at Week 1 minus score at baseline. A negative score indicates improvement in symptoms during the double-blind randomized phase relative to value at baseline. (NCT01176240)
Timeframe: Baseline, Week 1
Intervention | units on a scale (Mean) |
---|
Droxidopa | -3.1 |
Placebo | -1.6 |
Other Studies
1 other study available for serine and Dizzyness