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Avicenna Journal of Medical Biotechnology
Resumen/Descripción – provisto por la editorial en inglés
The Avicenna Journal of Medical Biotechnology (AJMB) is the official journal of Avicenna Research Institute (ARI) affiliated to Iranian Academic Center for Education, Culture and Research (ACECR). The AJMB journal is a Quarterly peer-reviewed, which accepts original papers related to all aspects of medical biotechnology including new concepts in technology/ methodology of relevance to the biological, biomedical sciences, ethical, legal, and social aspects of biotechnology for publications. Reviews, short communications, and letters to the editor are also welcomed. Prior consultation with the editor is recommended before preparing or submitting review articles.Palabras clave – provistas por la editorial
Medicine (General); Medicine
Disponibilidad
Institución detectada | Período | Navegá | Descargá | Solicitá |
---|---|---|---|---|
No requiere | desde ene. 2009 / hasta nov. 2024 | Directory of Open Access Journals | ||
No requiere | desde ene. 2009 / hasta nov. 2024 | PubMed Central |
Información
Tipo de recurso:
revistas
ISSN impreso
2008-2835
ISSN electrónico
2008-4625
Fecha de publicación
2009-
Cobertura temática
Tabla de contenidos
Novel Osteoporosis Therapeutic Targets Derived from Medical Biotechnology
Sepideh Hajivalizadeh; Shahin Akhondzadeh
<jats:p>The Article Abstract is not available.</jats:p>
Palabras clave: Biomedical Engineering; Applied Microbiology and Biotechnology; Bioengineering; Biotechnology.
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Annexin-A5 Overexpression Increases Sensitivity of MCF-7 and MCF-7/ADR Cells to Epirubicin
Mahshad Ghasemi; Niloofar Reiazi; Abbas Behzad Behbahani; Mohammad Ali Takhshid
<jats:p>Background: Multi-drug resistance is an important challenge in the chemotherapy of cancer. The role of annexin A5 (ANXA5) in the biology of cancer has been the focus of many studies. Breast Cancer (BC) is frequent cancer in women with high morbidity and mortality rate. The present study aimed to investigate the effects of ANXA5 overexpression on the anti-tumor activity of Epirubicin (EPI) in MCF-7 and MCF-7/ADR cells.
 Methods: MCF-7 and MCF-7/ADR cells were transfected with the pAdenoVator-CMV-ANXA5-IRES-GFP plasmid or mock plasmid. The overexpression of ANXA5 was evaluated using qPCR. The effects of ANXA5 overexpression and EPI on the cell viability of MCF-7 and MCF-7/ADR cells were measured using an MTT assay. Cell apoptosis was measured by annexin V/7-AAD flow cytometry assay.
 Results: Following the overexpression of ANXA5, the viability of MCF-7 and MCF-7/ADR was significantly decreased. Furthermore, the overexpression of ANXA5 in MCF-7 cells increased the cytotoxic effects of EPI in all doses and reduced the IC50 of EPI from 17.69 µM to 4.07 µM. Similarly, the overexpression of ANXA5 in MCF7-ADR cells reduced the IC50 of EPI from 27.3 µM to 6.69 µM. ANXA5 overexpression alone or combined with EPI treatment increased the apoptosis of MCF7 and MCF7-ADR cells. 
 Conclusion: The results of the present study demonstrate that ANXA5 overexpression increases the sensitivity of MCF-7 and MCF-7/ADR to EPI, suggesting a possible beneficial role of ANXA5 in the therapy of BC.
 </jats:p>
Palabras clave: Biomedical Engineering; Applied Microbiology and Biotechnology; Bioengineering; Biotechnology.
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Orexin-1 Receptor Antagonist SB-334867 Enhances Formalin-Induced Nociceptive Behaviors in Adult Male Rats
Masoumeh Kourosh-Arami; Alireza Komaki; Masoumeh Gholami
<jats:p>Background: Orexin (hypocretin) is one of the hypothalamic neuropeptides that plays a critical role in some behaviors including feeding, sleep, arousal, reward processing, and drug addiction. Neurons that produce orexin are scattered mediolaterally within the Dorsomedial Hypothalamus (DMH) and the lateral hypothalamus. In the current research, we assessed the impact of prolonged application of the antagonist of Orexin Receptor 1 (OXR1) on nociceptive behaviors in adult male rats.
 Methods: Sixteen Wistar rats received subcutaneous (s.c.) injections of the OXR1 antagonist, SB-334867 (20 mg/kg, i.p.), or its vehicle repetitively from Postnatal Day 1 (PND1)-PND30. On the 30th day following the final application of the OXR1 antagonist formalin-provoked pain was evaluated by injecting formalin.
 Results: Administration of the OXR1 antagonist in the long-term augmented the formalin-provoked nociceptive behaviors in interphase and phase II of the formalin-induced pain.
 Conclusion: Current results showed that the continued inhibiting OXR1 might be implicated in formalin-induced nociceptive behaviors. Therefore, the present study highlighted the effect of orexin on analgesia.</jats:p>
Palabras clave: Biomedical Engineering; Applied Microbiology and Biotechnology; Bioengineering; Biotechnology.
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Recombinant Production of TP4-LYC1, A New Chimeric Peptide with Targeted Cytotoxicity to HeLa Cells
Hanieh Mohammad Pour; Ali Jahanian-Najafabadi; Fatemeh Shafiee
<jats:p>Background: Tilapia Piscidin 4 (TP4) showed potential anti-tumor effects against various cancer cells. Lycosine-1 (LYC1), is another Antimicrobial Peptides (AMP) from spider venom with targeted penetration to cancer cells without any adverse effects on normal cells. The aim of this study was to produce a soluble recombinant fusion peptide in order to diminish the cytotoxicity of TP4 against normal cells.
 Methods: In order to express of TP4-LYC-1, TP4, and LYC1 in fusion to the inteins1/2 of pTWIN-1 vector, induction condition was optimized to earn soluble peptides. Auto-cleavage induction of inteins1/2 was performed based on IMPACT® manual and their effect on cell viability of HeLa and HUVEC cells was surveyed by MTT assay.
 Results: The best condition for accessing the most soluble peptide in fusion to the inteins was approximately similar for all three peptides (0.1 mM of IPTG, at 22°C). After the induction of self-cleavage of inteins, a band in 3, 3, and 6 kDa was observed on tricine-SDS-PAGE. The IC50 values of TP4-LYC1 and TP4 against HeLa cells were calculated as 0.83, and 2.75 µM, respectively.
 Conclusion: In the present study, a novel chimeric peptide, TP4-LYC1, was successfully produced. This fusion protein can act as a safe bio-molecule with potent cytotoxic effects against cancer cells, but the penetration ability and determination of cell death mechanism must be performed in order to have more precise view on the apoptosis induction of this recombinant peptide. </jats:p>
Palabras clave: Biomedical Engineering; Applied Microbiology and Biotechnology; Bioengineering; Biotechnology.
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Green Tea Extract Reduced Lipopolysaccharide-Induced Inflammation in L2 Cells as Acute Respiratory Distress Syndrome Model Through Genes and Cytokine Pro-Inflammatory
Didik Priyandoko; Wahyu Widowati; Lenny Lenny; Sintya Novianti; Revika Revika; Hanna Sari Widya Kusuma; Ika Adhani Sholihah
<jats:p>Background: Acute Respiratory Distress Syndrome (ARDS) is a severe lung inflammatory condition that has the capacity to impair gas exchange and lead to hypoxemia. This condition is found to have been one of the most prevalent in patients of COVID-19 with a more serious condition. Green tea (Camellia sinensis L.) contains polyphenols that possess many health benefits. The purpose of this study was to assess the anti-inflammatory activities of green tea extract in Lipopolysaccharide (LPS)-induced lung cells as ARDS cells model.
 Methods: In this study, rat lung cells (L2) were induced by LPS to mimic the inflammation observed in ARDS and later treated with green tea extract. Pro-inflammatory cytokines such as Interleukin (IL)-12, C-Reactive Protein (CRP) as well as Tumor Necrosis Factor-α (TNF-α) were investigated using the ELISA method. Gene expression of NOD-Like Receptor Protein 3 (NLRP-3), Receptor for Advanced Glycation End-product (RAGE), Toll-like Receptor-4 (TLR-4), and Nuclear Factor-kappa B (NF-κB) were evaluated by qRTPCR. Apoptotic cells were measured using flow cytometry.
 Results: The results showed that green tea extract treatment can reduce inflammation by suppressing gene expressions of NF-κB, NLRP-3, TLR-4, and RAGE, as well as pro-inflammatory cytokines such as IL-12, TNF-α, and CRP, an acute phase protein. Apoptosis levels of inflamed cells also found to be lowered when green tea extract was administered; thus, also increasing live cells compared to non-treated cells.
 Conclusion: These findings could lead to the future development of supplements from green tea to help alleviate ARDS symptoms, especially during critical moments such as the current pandemic.</jats:p>
Palabras clave: Biomedical Engineering; Applied Microbiology and Biotechnology; Bioengineering; Biotechnology.
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Anti-Quorum Sensing and Anti-Biofilm Activity of Ginger (Zingiber officinale) Rhizomes against Multidrug-Resistant Clinical Isolates of Pseudomonas aeruginosa
Pankaj Kumar Sagar; Poonam Sharma; Rambir Singh
<jats:p>Background: The aim of this study was to determination of Anti-Quorum Sensing (AQS) and anti-biofilm potential of the methanol extract of ginger (Zingiber officinale) rhizomes against multidrug-resistant clinical isolates of Pseudomonas aeruginosa (P. aeruginosa).
 Methods: The AQS activity of ginger was determined against Chromobacterium violaceum (C. violaceum) ATCC 12472 (CV12472), a biosensor strain, in qualitative manner using the agar well diffusion method. The violacein pigment inhibition was assessed to confirm AQS activity of ginger. The AQS potential of sub-minimum Inhibitory Concentrations (sub-MICs) of the ginger extract was determined by targeting different QS regulated virulence factors, including swarming motility (using swarm diameter measurement method), pyocyanin pigment (using chloroform extraction method), Exopolysaccharide (EPS) (using phenol-sulphuric acid method), and biofilm formation (using microtiter plate assay), against clinical isolates (CIs 2, 3, and 4) and standard reference strain of P. aeruginosa (PA01).
 Results: The AQS activity of methanol extract of ginger was confirmed against C. violaceum (CV12472) as inhibition of violacein pigment formation without effecting the growth of CIs and PA01 of P. aeruginosa. The ginger extract exhibited concentration-dependent inhibition of virulence factors and biofilm formation. The maximum reduction was found in swarming motility, pyocyanin, EPS and biofilm formation against PA01 (51.38%), CI3 (57.91%), PA01 (63.29%) and CI2 (64.37%), respectively at 1/2 MIC of ginger extract.
 Conclusion: The results of present study revealed the effective AQS and anti-biofilm potential of Zingiber officinale rhizome methanol extract at a reduced dose (sub-MICs). The extract may be explored further for its antibiotic potential and also for reducing the chances of emergence of resistance in P. aeruginosa. </jats:p>
Palabras clave: Biomedical Engineering; Applied Microbiology and Biotechnology; Bioengineering; Biotechnology.
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Effect of Intra-ovarian Injection of Mesenchymal Stem Cells or its Conditioned Media on Repeated OPU-IVEP Outcomes in Jersey Heifers and Its Relationship with Follicular Fluid Inflammatory Markers
Ali Sarvari; Amir Niasari-Naslaji; Abolfazl Shirazi; Banafsheh Heidari; Sara Borjian Boroujeni; Mohammad Hossein Moradi; Mohammad-Mahdi Naderi; Bahareh Behzadi; Mohammad-Mahdi Mehrazar; Mohammad Mehdi Dehghan
<jats:p>Background: Repeated Ovum Pick Up (OPU) could have a detrimental effect on ovarian function, reducing In Vitro Embryo Production (IVEP). The present study examined the therapeutic effect of adipose–derived Mesenchymal Stem Cells (MSCs) or its Conditioned Medium (ConM) on ovarian trauma following repeated OPU. Resolvin E1 (RvE1) and Interleukin-12 (IL-12) were investigated as biomarkers.
 Methods: Jersey heifers (n=8) experienced 11 OPU sessions including 5 pre-treatment and 6 treatment sessions. Heifers received intra-ovarian administration of MSCs or ConM (right ovary) and Dulbecco’s Modified Phosphate Buffer Saline (DMPBS; left ovary) after OPU in sessions 5 and 8 and 2 weeks after session 11. The concentrations of RvE1 and IL-12 in follicular fluid was evaluated on sessions 1, 5, 6, 9, and 4 weeks after session 11. Following each OPU session, the IVEP parameters were recorded.
 Results: Intra-ovarian administration of MSCs, ConM, and DMPBS did not affect IVEP parameters (p>0.05). The concentration of IL-12 in follicular fluid increased at the last session of pre-treatment (Session 5; p<0.05) and remained elevated throughout the treatment period. There was no correlation between IL-12 and IVEP parameters (p>0.05). However, RvE1 remained relatively high during the pre-treatment and decreased toward the end of treatment period (p<0.05). This in turn was associated with decline in some IVEP parameters (p<0.05).
 Conclusion: Intra-ovarian administration of MSCs or ConM during repeated OPU did not enhance IVEP outcomes in Bos taurus heifers. The positive association between RvE1 and some of IVEP parameters could nominate RvE1 as a promising biomarker to predict IVEP parameters following repeated OPU.</jats:p>
Palabras clave: Biomedical Engineering; Applied Microbiology and Biotechnology; Bioengineering; Biotechnology.
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Extracellular L-Asparaginase Synthesis Bacillus niacin Isolation, Optimization, and Characterization from Marine Saltern Sediment Sources
Mugip Rahaman Abdul Wahab; Thirunavukkarasu Palaniyandi; John Wyson; Asha Sivaji; Swarnakala Thamada
<jats:p>Background: Asparagine is an amino acid that can be converted into aspartic acid and ammonia by the enzyme L-asparaginase. Some forms of cancer, such Acute Lymphoblastic Leukaemia (ALL) and Non-Hodgkin Lymphoma (NHL), respond well to this enzyme when employed as a chemotherapeutic drug. The purpose of this research was to find bacteria that can manufacture the enzymes L-asparaginasein marine slattern sediment which can be employed in commercial and industrial scale production.
 Methods: All of the strains were identified as Bacillus niacini spp. by biochemical and molecular testing. The strain belongs to the Bacillus genus, according to nutritional, biochemical, PCR and 16srRNA sequencing data.
 Results: According to the findings of this research, Bacillus niacin spp. have the potential to create a substance that is helpful in a variety of medical applications. The results of this study hint to the possibility that bacteria have the ability to produce antimicrobial compounds, which have the potential to be successful in a wide variety of environments.
 Conclusion: Numerous opportunities may arise for researchers interested in utilizing the medical potential of enzyme-producing bacteria if they are successfully isolated and screened from aquatic and terrestrial habitats.</jats:p>
Palabras clave: Biomedical Engineering; Applied Microbiology and Biotechnology; Bioengineering; Biotechnology.
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