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The efficacy of Costus speciosus leaves on the postprandial glucose surge in healthy subjects; a clinical trial

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SLCTR Registration Number

SLCTR/2015/011


Date of Registration

15 May 2015

The date of last modification

Jul 09, 2019



Application Summary


Scientific Title of Trial

The efficacy of Costus speciosus leaves on the postprandial glucose surge in healthy subjects; a clinical trial


Public Title of Trial

The efficacy of Costus speciosus (Thebu) leaves to reduce postprandial blood glucose in healthy subjects.


Disease or Health Condition(s) Studied

Blood glucose response to commonly consumed herb


Scientific Acronym

None


Public Acronym

None


Brief title

Costus speciosus and blood glucose


Universal Trial Number

None


Any other number(s) assigned to the trial and issuing authority

2014/EC/64 (University of Peradeniya)


Trial Details


What is the research question being addressed?

Does the commonly consumed herb Costus speciosus (Thebu) in its usually consumed manner lower the blood glucose levels following ingestion?


Type of study

Interventional


Study design

Allocation

Randomized controlled trial


Masking

Single blinded


Control

Placebo


Assignment

Parallel


Purpose

Basic science


Study Phase

Phase 1


Intervention(s) planned

The subjects will be recruited from the staff of the University of Peradeniya. The Principle investigator will approach eligible subjects and inform and screen them. Subjects will be randomized using computer generated numbers to control or trial arms with concealed allocation.

20g of measured Costus leaves will be given in a salad preparation and the quantity served will be standardized and uniform.

The controls will receive a meal in similar calorie content and will contain the placebo in the form of “ Kathuru murunga” (Sesbania grandiflora) leaves

The meals will be supervised by the Nutritionist at the Teaching Hospital Peradeniya. A plasma glucose measurement will be taken prior to administration of the meal.


Inclusion criteria

  1. Healthy male and females aged between 18-65 years,
  2. Fasting plasma glucose <100mg/dl following a 10- hour fast

Exclusion criteria

  1. Pregnant and lactating females
  2. Inability to give informed written consent
  3. Known hypersensitivity to Costus specious
  4. Presence of T2DM, CKD, CCF, elevated hepatic transaminases, blood dyscrasia, malignancies
  5. Current steroid therapy
  6. Treatment with any oral hypoglycaemic agent (taken for indications other than DM as well),
  7. Known intestinal diseases, malabsorptive states and diarrhoea.
  8. Ingestion of any herbal preparation (including C. speciosus) known to alter glucose metabolism within the 48 hours preceding test meal administration.


Primary outcome(s)

1.
  1. 2-Hour plasma glucose following the meal
  2. 4 hour plasma glucose following the meal
  3. Fasting plasma glucose the following morning
[
  1. 2 hours following the test meal
  2. 4 hours following the meal
  3. Fasting plasma glucose the following morning after a fast of 8-10 hours.
]

Secondary outcome(s)

1.

None

[

None

]

Target number/sample size

50


Countries of recruitment

Sri Lanka


Anticipated start date

2015-06-01


Anticipated end date

2015-08-15


Date of first enrollment


Date of study completion


Recruitment status

Withdrawn


Funding source

None


Regulatory approvals



State of Ethics Review Approval


Status

Approved


Date of Approval

2014-11-13


Approval number

2014/EC/64


Details of Ethics Review Committee

Name: Ethics Review Committee, Faculty of Medicine, University of Peradeniya
Institutional Address:Galaha Road, Kandy, Sri Lanka
Telephone:+94-812396361
Email: chairpersonierc@gmail.com

Contact & Sponsor Information


Contact person for Scientific Queries/Principal Investigator

Arjuna Medagama
Senior Lecturer in Medicine
Department of Medicine Faculty of Medicine University of Peradeniya Sri Lanka
+94812396470


arjunam@pdn.ac.lk

Contact Person for Public Queries

Arjuna
Medagama
Department of Medicine Faculty of Medicine University of Peradeniya Sri Lanka
+94812396470


arjunam@pdn.ac.lk


Primary study sponsor/organization

Department of Medicine

Faculty of Medicine University of Peradeniya Sri Lanka
Tel: 081-2388840
Fax: 081-2389106
arjunam@pdn.ac.lk
http://www.pdn.ac.lk/med/departments/ medicine/index.html

Secondary study sponsor (If any)

None





Trial Completion details


Do the investigators plan to share identified individual clinical trial participant-level data (IPD)?


IPD sharing plan description


Study protocol available


Protocol version and date

Not Available


Protocol URL

Not Available


Results summary available

No


Date of posting results


Date of study completion


Final sample size


Date of first publication


Link to results


Brief summary of results