Intranasal Insulin for COVID-19-related Smell Loss

NCT05461365 | Completed Phase 3 DMC

• 1 other identifier: 01007
• Study Type: interventional
• Target: 27
• Locations: 1 country
• Sites: 1

Brief Summary

The aim of this study was to quantify the improvement in olfaction of 27 post-COVID-19 patients, after three intreventions of intranasal insulin during a four week period, with the help of the Threshold, Discrimination and Identification (TDI) score evaluated with Sniffin Sticks®.

Conditions

Anosmia; Smell Loss; Paraosmia; Hyposmia; COVID-19

Outcome Measures

Primary Outcomes (1)

• SMELL LOSS IMPROVEMENT

  1 MONTH

Study Arms (1)

intranasal insulin

EXPERIMENTAL

For each selected participant (n=27), a baseline olfactory measurement was performed with Sniffin Sticks® (12 items) and a capillary glucose measurement was obtained with Dextrostix® NF before and after the intervention, in order to guarantee patient safety and reduce the risk of hypoglycemia. The initial and final measurements were divided into three subsections with a different number of correct answers for each section Subsequently, Gelfoam® cottonoids soaked in 40 IU of NPH insulin were placed on the nasal roof (between the nasal septum and the middle meatus) of each nostril. These remained in place for 15 minutes and were later removed. This procedure was performed in three visits one week apart. During the fourth and last visit (one week after the previous visit), olfaction was reevaluated using the measures previously described.

Drug: Insulin

Interventions

Insulin DRUG

Gelfoam® cottonoids soaked in 40 IU of NPH insulin were placed on the nasal roof (between the nasal septum and the middle meatus) of each nostril. These remained in place for 15 minutes and were later removed. This procedure was performed in three visits one week apart. During the fourth and last visit (one week after the previous visit), olfaction was reevaluated using the measures previously described.

Also known as: intranasal insulin

intranasal insulin

Eligibility Criteria

• Age: 18 Years - 59 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64)

You may qualify if:

• COVID-19 in the last 3 to 18 months and who persisted with anosmia, hyposmia or other olfactory dysfunction chronically and without improvement

You may not qualify if:

• nasal tumors, chronic sinusitis, drug-induced sinusitis, nasal polyposis, neurodegenerative disease, smoking, pregnancy Hypoglycemia and a previous diagnosis of diabetes mellitus or anatomical malformations such as septal deviation, rhinosinusitis or choanal atresia

Sponsors & Collaborators

• Universidad Panamericana: lead

Study Sites (1)

Universidad Panamerican

Mexico City, 03920, Mexico

Location

Related Publications (5)

• Oleszkiewicz A, Schriever VA, Croy I, Hahner A, Hummel T. Updated Sniffin' Sticks normative data based on an extended sample of 9139 subjects. Eur Arch Otorhinolaryngol. 2019 Mar;276(3):719-728. doi: 10.1007/s00405-018-5248-1. Epub 2018 Dec 15.

  PMID: 30554358 BACKGROUND

• Kosugi EM, Lavinsky J, Romano FR, Fornazieri MA, Luz-Matsumoto GR, Lessa MM, Piltcher OB, Sant'Anna GD. Incomplete and late recovery of sudden olfactory dysfunction in COVID-19. Braz J Otorhinolaryngol. 2020 Jul-Aug;86(4):490-496. doi: 10.1016/j.bjorl.2020.05.001. Epub 2020 May 25.

  PMID: 32534982 BACKGROUND

• Vaira LA, Salzano G, Fois AG, Piombino P, De Riu G. Potential pathogenesis of ageusia and anosmia in COVID-19 patients. Int Forum Allergy Rhinol. 2020 Sep;10(9):1103-1104. doi: 10.1002/alr.22593. Epub 2020 Jun 15. No abstract available.

  PMID: 32342636 BACKGROUND

• Rezaeian A. Effect of Intranasal Insulin on Olfactory Recovery in Patients with Hyposmia: A Randomized Clinical Trial. Otolaryngol Head Neck Surg. 2018 Jun;158(6):1134-1139. doi: 10.1177/0194599818764624. Epub 2018 Mar 20.

  PMID: 29557250 RESULT

• Mohamad SA, Badawi AM, Mansour HF. Insulin fast-dissolving film for intranasal delivery via olfactory region, a promising approach for the treatment of anosmia in COVID-19 patients: Design, in-vitro characterization and clinical evaluation. Int J Pharm. 2021 May 15;601:120600. doi: 10.1016/j.ijpharm.2021.120600. Epub 2021 Apr 14.

  PMID: 33862126 RESULT

MeSH Terms

Conditions

Anosmia; Olfaction Disorders; COVID-19

Interventions

Insulin

Condition Hierarchy (Ancestors)

Sensation Disorders; Neurologic Manifestations; Nervous System Diseases; Signs and Symptoms; Pathological Conditions, Signs and Symptoms; Pneumonia, Viral; Pneumonia; Respiratory Tract Infections; Infections; Virus Diseases; Coronavirus Infections; Coronaviridae Infections; Nidovirales Infections; RNA Virus Infections; Lung Diseases; Respiratory Tract Diseases

Intervention Hierarchy (Ancestors)

Proinsulin; Insulins; Pancreatic Hormones; Peptide Hormones; Hormones; Hormones, Hormone Substitutes, and Hormone Antagonists; Peptides; Amino Acids, Peptides, and Proteins

Study Design

• Study Type: interventional
• Phase: phase 3
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor

Study Record Dates

• First Submitted: July 14, 2022
• First Posted: July 18, 2022
• Study Start: January 4, 2021
• Primary Completion: November 25, 2021
• Study Completion: December 20, 2021
• Last Updated: July 18, 2022

Record last verified: 2022-07

Locations

ME (1)