Aerosol Combination Therapy of All-trans Retinoic Acid and Isotretinoin as A Novel Treatment for Inducing Neutralizing Antibodies in COVID -19 Infected Patients Better Than Vaccine : An Innovative Treatment

Summary

Aerosol Combination therapy of All-trans retinoic acid and Isotretinoin as A novel Treatment for Inducing Neutralizing Antibodies in COVID -19 Infected Patients better than vaccine : An innovative Treatment

Mahmoud ELkazzaz(1),Tamer Haydara(2), Mohamed Abdelaal(3), Ahmed M. Kabel(4), Abedelaziz Elsayed(5) ,Yousry Abo-amer(6) ,Hesham Attia(7)

1. Department of chemistry and biochemistry, Faculty of Science, Damietta University,Egypt.
2. Department of Internal Medicine,Faculty of Medicine, Kafrelsheikh University, Egypt
3. Department of Cardiothoracic Surgery,Faculty of Medicine, Kafrelsheikh University, Egypt
4. Department of Clinical Pharmacy, Faculty of Medicine , Tanta University,Egypt.
5. Department of Pharmaceutical Biotechnology, Faculty of Pharmacy,Tanta University,Egypt.
6. Hepatology,Gastroenterology and Infectious Diseases Department, Mahala Hepatology Teaching Hospital,Egypt
7. Department of Immunology and Parasitology, Faculty of Science, Cairo University, Egypt.

* Study Chair ((( Dr.Tamer Hydara))), Department of Internal Medicine,Faculty of Medicine, Kafrelsheikh University, Egypt Contact: Dr.Tamer Hydara-Tel: 00201142233340 Mail: [email protected]
* Principal Investigator ((( Mahmoud Elkazzaz))), Faculty of Science, Damietta University,GOEIC,Egypt Contact:Tel: 00201090302015 Mail: [email protected]
* Study coordinator ((Prof/Dr Mohamed Abdelaal)), Department of Cardiothoracic Surgery,Faculty of Medicine, Kafrelsheikh University, Egypt Contact:Tel: 00201001422577 Mail: [email protected]

Abstract

The pandemic of COVID-19 which is caused by severe acute respiratory syndrome coronavirus 2 (SARS-COV-2) has infected over 20,000,000 people causing over 700,000 deaths .It has no currently approved treatments. In this clinical study we confirm that combination of isotretinoin and All trans retinoic acid can be used in the treatment of SARS-COV-2 better than vaccine according to the findings of previous studies and researches. Retenoic acid can induce neutralizing antibodies in case of corona virus (COVID-19) by restoring inhebited and exhausted T cells via inhebiting both CD13 and Angiotensin-converting enzyme-2 (ACE2). CD13 amyloid receptor which abundantly overexpressed on cell surface of lymphocyte, Dentritic cell, Macrophage, granulocytes and monocytes and is ubiquitous in respiratory tract epithelial cells, smooth muscle cells, fibroblasts, epithelial cells in the kidneys and small intestine, activated endothelial cells, and platelets In addition inhibing of Angiotensin-converting enzyme-2 (ACE2) , Angiotensin T1 protein and Angiotensin II-mediated intracellular calcium release pathway which is responsible for COVID-19 cell fusion and entry.ACE2-expressing cells are prone to SARS-CoV-2 infection as ACE2 receptor facilitates cellular viral entry and replication. A study demonestrated that patients with hypertension and diabetes mellitus may be at higher risk of SARS-CoV-2 infection, as these patients are often treated with ACE inhibitors (ACEIs) or angiotensin II type-I receptor blockers (ARBs), which have been previously suggested to increase ACE2 expression.Butisotretinoin was found to be the strongest down-regulator of ACE 2 receptors.and this will give hope for diabetic patients or patients with hypertension infected with COVID-19.Therefore we suggest that Retinoic Acid will help in inhabiting factors which may enhance antibody dependent enhancement (ADE), A phenomenon caused by covid-19 which expected to lead to failure of vaccination specially in case of corona virus (covid-19) as a hyper mutatated COVID-19 antigens can lead to (ADE) phenomenon in which IgG antibodies facilitate viral entry and fusion with infected cell through uptake of the virus-IgG complex via the Fc receptors and later viral fusion with antigen presenting cells like Dentric cells, macrophages and B cells via FcR , through the neonatal FcR instead of antibodies induced viral agglutination and this is known as antibody dependent enhancement (ADE)(2) ADE can hamper vaccine development, as a vaccine may cause the production of antibodies which, via ADE, worsen the disease the vaccine is designed to protect against. ADE in COVID-19 infection can be caused by high mutation rate of the gene that encodes spike (S) protein. In this clinical study we suggest that Hyper mutated spike protein ,lymphopenia, and impaired dentreic cells all these factors can help in and lead to delayed antibodies response and appearing after a period of covid -19 symptoms onset and this may be responsible for antibody dependent enhancement (ADE)

Keywords: COVID 2019 , Retinoic acid, Lymphopenia ,T Cells, Dentric cells , ADE, Vaccine

Conditions

• COVID-19

Interventions

DRUG

Aerosolized 13 cis retinoic acid

The infected patients will receive Aerosolized 13 cis retinoic acid in gradual in one dose increases froms 0.2 mg/kg/day to 4 mg/kg/day as inhaled 13 cis retinoic acid therapy for 14 days

DRUG

Aerosolized All trans retinoic acid

The infected patients will receive Aerosolized All trans retinoic acid in gradual one dose increases froms 0.2 mg/kg/day to 4 mg/kg/day as inhaled all trans retinoic acid therapy for 14 days

OTHER

Placebo

Placebo is a pill or tablet that does not contain any study drug.

Sponsors & Collaborators

• Damietta University

  collaborator OTHER

• Kafrelsheikh University

  lead OTHER

Principal Investigators

• M.Sc. Mahmoud Elkazzaz, B.Sc of biochemistry · Damitta University

• Dr.Tamer Hydara, Lecturer of Internal Medicine · Faculty of medicine kafr elshiekh university

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Model

PARALLEL

Eligibility

Min Age

18 Years

Max Age

70 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2020-10-31

Primary Completion

2020-10-31

Completion

2020-12-31