Publications by authors named "Delaram Doroud"

During COVID-19 pandemic, international pharmaceutical companies put effort to build global manufacturing networks for vaccines. Soberana Plus vaccine, a recombinant protein based vaccine (RBD dimer), with the trade name of PastoCovac Plus in Iran, is based on a protein subunit platform in Cuba and completed preclinical and toxicological assessments. This study aimed at presenting the steps of vaccine technology transfer from Cuba to Iran.

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Background: Injectable products, particularly human vaccines, must be free from fever-inducing agents and thoroughly tested for pyrogens as part of a quality control. Consequently, manufacturing facilities are required to conduct appropriate pyrogen tests per pharmacopeial standards. This study aimed to evaluate the reliability of the MAT in quantifying pyrogenic content in the recombinant hepatitis B vaccine.

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  • - This study, conducted from April 2021 to October 2022, focused on the potential impact of COVID-19 vaccines on menstrual cycles in women who received three doses of the vaccine.
  • - Out of 308 participants, 22 women (7.1%) reported abnormal menstrual changes after vaccination, with metrorrhagia being the most common issue observed in nearly half of these cases.
  • - A significant percentage (59%) of those who reported disturbances experienced persistent symptoms, and some participants also contracted COVID-19 after showing menstrual disorders, suggesting that the virus might contribute to these changes alongside vaccination effects.
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Background: The role of probiotics and micronutrients in improving immune system function and response to vaccination has been proven. Hence, this study aimed to investigate the effects of probiotics enriched with micronutrients on the immunogenicity of PastoCovac® vaccine.

Methods: The probiotic supplement BioBoost® and PastoCovac® vaccine, which contain six expressed receptor-binding domains (RBD) and conjugated with tetanus toxin, were administered concurrently.

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Background: The multimodal chromatography resins, such as Capto adhere, are considered good candidates to be utilized in downstream processing due to their high capacity and selectivity; however, their multimodal interactions lead to an intricacy in the adsorption-desorption patterns and systematic characterization of conditions for process steps is necessary.

Methods: Capto adhere, a strong ion exchanger with multimodal functionality, was used in this study for the final aim of recombinant hepatitis B surface antigen (rHBsAg) purification from () industrial feedstock. Optimization of various parameters was done using the design of experiments (DOE) approach to determine the best binding and non-binding conditions.

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  • Lipoarabinomannan, a component of mycobacterial cell surfaces, acts as an immunostimulant, triggering anti-bacterial cytokines like TNF-α and IL-12 during infections.
  • In this study, female Bulb/c mice were divided into three groups: one received just the BCG vaccine, another received BCG with mannan adjuvant, and the last was a control group, with serum levels of various inflammatory factors measured.
  • Results showed that the group with BCG and mannan adjuvant had significantly higher levels of IL-12, TNF-α, and IgG compared to those receiving only BCG or the control, while IgM levels were higher in the
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  • - The study identifies the TRIM25 gene's role in COVID-19, revealing that lower expression levels of this gene are linked to more severe disease outcomes compared to milder cases and healthy individuals.
  • - The research involved analyzing blood samples from 330 COVID-19 patients and 160 healthy individuals, using quantitative Real-time PCR to assess TRIM25 expression and its correlation with disease severity.
  • - Results indicate that increased TRIM25 expression can reduce SARS-CoV-2 virus replication and promote immune response by inducing beta-interferon, highlighting its potential as a therapeutic target for COVID-19 treatment.
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Mycobacterium tuberculosis, the causative agent of tuberculosis, is a pathogenic bacterium that has claimed millions of lives since the Middle Ages. According to the World Health Organization's report, tuberculosis ranks among the ten deadliest diseases worldwide. The presence of an extensive array of genes and diverse proteins within the cellular structure of this bacterium has provided us with a potent tool for diagnosis.

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Background: Increased pediatric COVID-19 occurrence due to the SARS-CoV-2 Omicron variant has raised concerns about the effectiveness of existing vaccines. The protection provided by the SOBERANA-02-Plus vaccination scheme against this variant has not yet been studied. We aimed to evaluate the scheme's effectiveness against symptomatic Omicron infection and severe disease in children.

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  • - PastoCovac is a COVID-19 subunit protein vaccine that uses tetanus toxoid to enhance immune response, aimed at generating a stronger reaction against SARS-CoV-2's RBD.
  • - A study evaluated the immune response to tetanus in groups receiving one to three doses of PastoCovac compared to a Td vaccine and other COVID-19 vaccines, finding that PastoCovac effectively raised anti-tetanus antibodies, particularly with additional doses.
  • - Despite a decline in antibody levels over six months, the PastoCovac recipients maintained positive antibody responses and reported no side effects, suggesting it could be a viable option for inducing immunity against tetanus along with COVID-19.
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  • This study investigated how blood types affect the immune response to COVID-19 vaccines, focusing on antibody levels after vaccination at the Pasteur Institute of Iran between April 2021 and December 2022.
  • Results demonstrated that blood type A had a significantly higher increase in anti-Spike antibodies for those vaccinated with AstraZeneca compared to Sinopharm, while blood type O positively influenced antibody levels in both AstraZeneca and Sinopharm groups.
  • Additionally, Rh-positive individuals showed a greater antibody response in AstraZeneca vaccine recipients, across both homologous and heterologous regimens, suggesting blood types A and O, as well as Rh-positive status, may enhance vaccine effectiveness.
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The present study aims to provide an insight to the comprehensive efforts of Pasteur Institute of Iran (PII) regarding COVID-19 management, research, achievements, and vaccine production, though there are many challenges. The relevant literature review was investigated through national and international database and also reports from the related research departments. Six strategies were taken by PII to manage the pandemic of COVID-19.

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Aim: The present study aimed to determine a correlation between differential expression levels and severe infections of COVID-19 between the Alpha, Delta and Omicron BA.5 variants.

Materials & Methods: This study was performed on 330 COVID-19 patients, including 142 with severe and 188 with mild infections, as well as 160 healthy controls.

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There have been massive studies to develop an effective vaccine against SARS-CoV-2 which fortunately led to manage the recent pandemic, COVID-19. According to the quite rapidly developed vaccines in a fast window time, large investigations to assess the probable vaccine-related adverse events are crucially required. COVID-19 vaccines are available of different platforms and the primary clinical trials results presented acceptable safety profile of the approved vaccines.

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  • This study evaluated the effectiveness of the PastoCovac Plus vaccine as a booster compared to the original vaccines (ChAdOx1-S and BBIBP-CorV) in volunteers who had already received two doses of either.
  • A total of 194 previously vaccinated participants were divided into groups to receive either the PastoCovac Plus or another dose of their initial vaccine, with serum samples collected before and four weeks after the booster to measure antibody levels.
  • Results showed significant increases in anti-spike IgG levels for those receiving the PastoCovac Plus booster, with no notable differences in neutralizing antibody levels, indicating that both booster options are similarly effective.
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  • Mannoproteins, which are glycosylated proteins, have significant biological roles and industrial applications; this study focuses on extracting mannan oligosaccharide from the yeast Kluyveromyces marxianus.
  • Various methods, including Sevage, trichloroacetic acid, and hydrochloric acid (HCl), were tested for deproteinization, and the resulting products were analyzed for their chemical composition and extraction efficiency.
  • The study found that the HCl method yielded the highest purity (95.4%) and most effective deproteinization (97.33%), suggesting it is the best method to remove impurities in mannan oligosaccharide extraction for future scaling efforts.
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The difficulties in purification of VLP-based recombinant hepatitis B surface antigen (rHBsAg) are mainly emerged from inefficient semi-purification step plus proteins physicochemical properties and these issues make the downstream processing (DSP) very lengthy and expensive. In this study, optimization of rHBsAg (recombinantly-expressed in Pichia pastoris) DSP was performed using selection of buffering conditions in the semi-purification step. In the semi-purification optimization step, up to 73% of the protein impurities were eliminated and the utmost increase in rHBsAg purity (ca.

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The optimal booster vaccine schedule against COVID-19 is still being explored. The present study aimed at assessment of the immunogenicity and antibody persistency of inactivated-virus based vaccine, BBIP-CorV and protein-subunit based vaccines, PastoCovac/Plus through heterologous and homologous prime-boost vaccination. Totally, 214 individuals who were previously primed with BBIBP-CorV vaccines were divided into three arms on their choice as heterologous regimens BBIBP-CorV/PastoCovac (n = 68), BBIBP-CorV/PastoCovac Plus (n = 72) and homologous BBIBP-CorV (n = 74).

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Various factors are effective in reducing the fertility rate. This experiment aimed to investigate chlorpyrifos (CPF), an organophosphate, that could alter the structure of the uterus and the molecules involved in parental and fetal. CPF was injected intraperitoneally in thirty mice for five days in a week (six weeks).

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Objective: The innate immune response in humans involves a wide variety of factors, including the tripartite motif-containing 5α (TRIM5α) and 22 (TRIM22) as a cluster of genes on chromosome 11 that have exhibited antiviral activity in several viral infections. We analyzed the correlation of the expression of TRIM5α and TRIM22 with the severity of Coronavirus Disease 2019 (COVID-19) in blood samples of 330 patients, divided into two groups of severe and mild disease, versus the healthy individuals who never had contact with Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2).

Methods: The transcription level of TRIM5α and TRIM22 was determined by quantitative real-time polymerase chain reaction (qPCR).

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Background: SOBERANA-02 is a COVID-19 conjugate vaccine (recombinant RBD conjugated to tetanus toxoid). Phases 1/2 clinical trials demonstrated high immunogenicity, promoting neutralising IgG and specific T-cell response. A third heterologous dose of SOBERANA-Plus (RBD-dimer) further increased neutralising antibodies.

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Objectives: To evaluate a heterologous vaccination scheme in children 3-18 years old (y/o) combining two SARS-CoV-2r- receptor binding domain (RBD)protein vaccines.

Methods: A phase I/II open-label, adaptive, and multicenter trial evaluated the safety and immunogenicity of two doses of FINLAY-FR-2 (subsequently called SOBERANA 02) and the third heterologous dose of FINLAY-FR-1A (subsequently called SOBERANA Plus) in 350 children 3-18 y/o in Havana Cuba. Primary outcomes were safety (phase I) and safety/immunogenicity (phase II) measured by anti-RBD immunoglobulin (Ig)G enzyme-linked immunoassay (ELISA), molecular and live-virus neutralization titers, and specific T-cells response.

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