Safety Evaluation of Porous Silica in Men

NCT ID: NCT03667430

Last Updated: 2018-09-12

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-09-01

Study Completion Date

2016-02-01

Brief Summary

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The aim of the present study was to determine whether oral dosing, up to 9 grams/day, of porous silica administered as a food additive can be used safely in normal weight and obese male humans, without significant side effects on gastrointestinal function, bowel emptying habits, and biomarkers.

Detailed Description

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This single blinded safety study will consist of two study arms and include 10 males each (18-35 years). One arm will include participants with normal weight and one with obesity. After a placebo run-in period, all subjects will be given porous silica three times daily, with increasing dose up to 9 grams/day (Phase 1). Subjects with obesity continued the study with highest dose for additional 10 weeks (Phase 2).

The participants will have weekly contacts during with the representative for the study (PI or other research staff). Clinical examinations, and blood sampling will be performed day 1, 7, 14, and 21. Faeces and morning urinary sampling day 1, and 21. Information regarding eating habits, sleep patterns, living conditions and gastrointestinal health were obtained from written forms and orally. If gastrointestinal adverse events would occur after increased dosage, the study staff will adapt the dosage protocol to facilitate adherence.

Conditions

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Safety Issues

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

OTHER

Blinding Strategy

SINGLE

Participants

Study Groups

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Normal weight subjects

Healthy normal weight (BMI 20-25) men 18-35 year. Intervention: The participants will take placebo or silica powder with specified doses administrated in vials and with instructions to mix with water as; Placebo (microcrystalline cellulose) day 1-5 Porous silica 1gx3 daily for day 6-9 Porous silica 2gx3 daily for day 10-14 Porous silica 3gx3 daily for day 15-21 Total study time 21 days

Group Type EXPERIMENTAL

Porous silica

Intervention Type DIETARY_SUPPLEMENT

The particle is rod shaped and approximately 1-3 x 0.4-0.5 micrometers with pore sizes in the range of 70-130 Ångström or 7-13 nanometer.

Placebo (microcrystalline cellulose)

Intervention Type DIETARY_SUPPLEMENT

All participants starts with five days placebo run in period

Subjects with obesity

Obese otherwise healthy men (BMI 30-45) 18-35 year Intervention: The participants will take placebo or silica powder with specified doses administrated in vials and with instructions to mix with water as; Placebo (microcrystalline cellulose) day 1-5 Porous silica 1gx3 daily for day 6-9 Porous silica 2gx3 daily for day 10-14 Porous silica 3gx3 daily for day 15-21 The dose of Silica 3gx3 for additional 10 weeks Total study time 84 days

Group Type EXPERIMENTAL

Porous silica

Intervention Type DIETARY_SUPPLEMENT

The particle is rod shaped and approximately 1-3 x 0.4-0.5 micrometers with pore sizes in the range of 70-130 Ångström or 7-13 nanometer.

Placebo (microcrystalline cellulose)

Intervention Type DIETARY_SUPPLEMENT

All participants starts with five days placebo run in period

Interventions

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Porous silica

The particle is rod shaped and approximately 1-3 x 0.4-0.5 micrometers with pore sizes in the range of 70-130 Ångström or 7-13 nanometer.

Intervention Type DIETARY_SUPPLEMENT

Placebo (microcrystalline cellulose)

All participants starts with five days placebo run in period

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

Group - Normal weight subjects

* Age 18-35
* BMI 20-25

Group - Subject with obesity

* Age 18-35
* BMI 30-45

Exclusion Criteria

* Chronic somatic diseases that may affect metabolic and/or intestinal function (e.g. diabetes, hypertension, dyslipidemia, Irritable Bowel Disease, gluten intolerance, pancreatic dysfunction, other causes of malabsorption, neoplastic disease,)
* Allergies with previous anaphylactic reactions
* Previous abdominal surgery
* Current or history of eating disorders
* Extreme or unusual diets such as Low Carb High Fat and vegetarian diets for the last year
* Psychiatric disorders (e.g. schizophrenia, and other diagnoses that may influence compliance)
* Drug or alcohol abuse
* Continuous oral pharmacological treatment and other types of pharmacological treatment that may influence the study
* Other conditions which the investigator considers could negatively affect the outcome of the study or study compliance
Minimum Eligible Age

18 Years

Maximum Eligible Age

35 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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Sigrid Therapeutics AB, Sweden

INDUSTRY

Sponsor Role collaborator

Stockholm University

OTHER

Sponsor Role collaborator

Karolinska Institutet

OTHER

Sponsor Role lead

Responsible Party

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Pernilla Danielsson

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Pernilla Danielsson, PhD

Role: PRINCIPAL_INVESTIGATOR

Karolinska Institutet

Other Identifiers

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Sigrid1

Identifier Type: -

Identifier Source: org_study_id

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