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Introduction

The Avicenna Research Institute (ARI) is an organization that was founded in 1998 with the aim of advancing medical technology through clinical and laboratory research projects. It is affiliated with the ACECR and consists of three research centers: the Reproductive Biotechnology Research Center (RBRC), Monoclonal Antibody Research Center (MARC), and Nanobiotechnology Research Center (NBRC). Additionally, ARI houses the Avicenna Biotechnology Incubator and Avicenna Infertility Clinic (AIC).

Aim: Here, an innovative kind of antibacterial nanocomposite film is developed by incorporating graphene oxide and zinc oxide into chitosan matrix. Materials & methods: Our dressing was fabricated using the solution casting method. Fourier transform infrared spectra and TGA-DTG clearly confirmed the structure of film dressing. Results & conclusion: Our results showed the tensile strength and elongation at the break of the films were 20.1 ± 0.7 MPa and 36 ± 10%, respectively. Our fabricated film could absorb at least three-times the fluid of its dry weight while being biocompatible, antibacterial, non-irritant and non-allergic. In addition, it accelerated the healing process of infected wounds by regulating epithelium thickness and the number of inflammatory cells, thus it may be useful for direct application to damaged infected wounds.

01 Oct 2024·Enzyme and Microbial Technology

Development of a bioluminescent homogenous nanobody-based immunoassay for the detection of prostate-specific antigen (PSA)

Article

Author: Baghdadi, Mahmoud Esraa ; Nazari, Mahboobeh ; Michelini, Elisa ; Emamzadeh, Rahman

Prostate cancer is the most prevalent cancer in men. At present, the diagnosis and screening of prostate cancer rely on the essential biomarker known as prostate-specific antigen (PSA). The main purpose of this study was to develop a novel immunoassay for the detection of PSA based on a tri-part split-nanoluciferase system and a nanobody targeting PSA. In our approach, two small components of the split-nanoluciferase, referred to as β9 and β10, were individually fused to two anti-PSA nanobodies, N7 and N23. When these proteins bind to PSA and in the presence of the third nanoluciferase component, called Δ11S, the split-nanoluciferase components are brought into close proximity, facilitating the reassembly of the active nanoluciferase and activation of luminescence. These proteins were expressed in a bacterial expression system, purified, and employed for the intended immunoassay. The developed immunoassay demonstrated the capability to sensitively detect PSA within a linear range from 1.0 to 20.0 ng/mL with LOD of 0.4 ng/mL, and the results obtained through this immunoassay agreed with those derived from the ELISA. Our study indicates that the homogeneous immunoassay developed with nanobodies exhibits remarkable specificity for PSA and can serve as a reliable, fast, and user-friendly test for detecting PSA.

13 Sep 2024·BMJ open

Investigating the relationship between spermogram parameters and sexual desire in infertile men: a cross-sectional study from a tertiary centre in Iran.

Article

Author: Akhavizadegan, Hamed ; Lotfi, Razieh ; Ghorbani, Behzad ; Mohazzab, Arash ; Fathalian, Manizheh ; Amirjannati, Naser

BACKGROUNDMale factor infertility can affect spermatogenesis, sexual desire, and thus the quality of life of couples. The present study was conducted to investigate the relationship between spermogram parameters, and the score of sexual desire in infertile men.METHODSThis cross-sectional study was conducted on 315 infertile men referred to the Avicenna Infertility Center of Tehran (March 2022 to March 2023). The participants were selected based on the results of previous spermogram and hormonal tests recorded in their medical records. Eligible men completed the demographic information questionnaire and Hurlbert Index of Sexual Desire. A multivariable linear regression model was used to adjust the effect of variables on Hurlbert's score.RESULTSThere was no significant relationship among sperm parameters (count, morphology, motility, vitality, concentration and DNA Fragmentation Index) and with sexual desire of infertile men. Education level, age of men and their partners, the duration of the marriage and duration of infertility did not have a statistically significant effect on sexual desire. However, economic status had an inverse effect on men's sexual desire, with regression coefficients of 7.37 and 7.78 for medium and low socioeconomic levels compared with high (p<0.05).CONCLUSIONMale sexual desire is primarily influenced by social factors rather than organic ones. Further multicentre prospective studies are recommended for more accurate results.

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Pipeline

Pipeline Snapshot as of 23 Nov 2024

The statistics for drugs in the Pipeline is the current organization and its subsidiaries are counted as organizations,Early Phase 1 is incorporated into Phase 1, Phase 1/2 is incorporated into phase 2, and phase 2/3 is incorporated into phase 3

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