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Hossein Khorramdelazad Elham Hakimizadeh Gholamhossein Hassanshahi Mohammadtaghi Rezayati Hossein Sendi Mohammad Kazemi Arababadi 《Journal of medical virology》2013,85(6):964-968
CCR5 is an important chemokine receptor involved in the recruitment of specific anti‐viral immune cells (e.g., NK cells and T cytotoxic cells) to the liver. Previous studies indicated that the Δ 32 mutation in CCR5 gene led to inactivation of CCR5. Several conflicting studies have suggested that this mutation may be associated with either recovery or persistence of HBV infection. The main purpose of this study was to compare the frequency of the Δ 32 mutation within the CCR5 gene in a group of patients infected chronically with HBV with healthy individuals from South‐East of Iran. Sixty patients with chronic HBV infection as well as 300 age‐, and sex‐match healthy individuals were enrolled in this study. Gap‐PCR was applied to determine the frequency of CCR5 Δ 32 mutation in both groups. The results demonstrated that none of the patients infected with HBV carried the CCR5 Δ 32 mutation while, 3 (1%) of the healthy individuals were found to be heterozygotic for this mutation. The CCR5 Δ 32 mutation is not a prevalent mutation in either the patients infected chronically with HBV or their health counterparts in the South‐East region of Iran. This may be attributed to either different genetic settings of the investigated population or lack of any significant correlation between this mutation and HBV pathogenicity. J. Med. Virol. 85: 964–968, 2013. © 2013 Wiley Periodicals, Inc. 相似文献
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Batool Hajebrahimi Gholamhossein Hassanshahi Mahmood Nazari Reza Bidaki Hassan Khodadadi 《International journal of psychiatry in clinical practice》2014,18(1):41-44
Background and aims. TRIF and MYD88 are intracellular adaptor proteins for TLR signaling, and altered expression of these molecules can lead to defective or unregulated immune responses. Furthermore, previous studies revealed that depression may alter immune responses, but its mechanisms of action are unclear yet. There is a possibility that immunity and depression are linked through molecules such as TRIF and MYD88, thus, the aim of this study was to evaluate the mRNA levels of TRIF and MYD88 in the PBMCs isolated from depressed medical students. Material and methods. The current study examined 38 depressed medical students studying in Iran and 43 healthy students from the same cohort as a control group. The mRNA levels of TRIF and MYD88 were examined in parallel with a housekeeping gene using real-time PCR. Results. Our results demonstrated that expression of TRIF and MYD88 were significantly elevated in PBMCs isolated from depressed patients when compared to healthy subjects. Conclusions. Based on the current results, it seems that chronic inflammation in depressed patients correlates to the over expression of TRIF and MYD88 genes. Our results show a possible link between the reported increases of chronic inflammation in depressed individuals with unbalanced expression of genes that regulate immunity. 相似文献
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Hossein Khorramdelazad Gholamhossein Hassanshahi Behzad Nasiri Ahmadabadi Mohammad Kazemi Arababadi 《Hepatitis monthly》2012,12(11)
Background
The transforming growth factor-β (TGF-β) is an important cytokine with anti-inflammatory properties.Objectives
The main purpose of this study was to compare the serum levels of TGF-β in a group of chronic HBV infected (CHB) patients as well as healthy individuals from South-East of Iran.Patients and Methods
Sixty patients with CHB as well as sixty healthy individuals were enrolled in the study. ELISA technique was applied to measure the serum levels of TGF-β in both groups.Results
Our results revealed that the serum levels of TGF-β were significantly increased in CHB patients in compare to healthy controls.Conclusions
According to this result, it may be concluded that high serum levels of TGF-β may be a mechanism by which immune response against HBV is suppressed. 相似文献6.
Mohammadhossein Khorraminejad-Shirazi Mohammad Farahmandnia Bahareh Kardeh Alireza Estedlal Sina Kardeh Ahmad Monabati 《Hematology/oncology and stem cell therapy》2018,11(4):189-194
In recent years, tissue regeneration has become a promising field for developing stem cell-based transplantation therapies for human patients. Adult stem cells are affected by the same aging mechanisms that involve somatic cells. One of the mechanisms involved in cellular aging is hyperactivation of mechanistic target of rapamycin complex 1 (mTORC1) and disruption of 5′ adenosine monophosphate-activated protein kinase (AMPK). Aging of stem cells results in their impaired regenerative capacity and depletion of stem cell pools in adult tissue, which results in lower efficacy of stem cell therapy. By utilizing an effective therapeutic intervention for aged stem cells, stem cell therapy can become more promising for future application. mTORC1 inhibition is a practical approach to preserve the stem cell pool. In this article, we review the dynamic interaction between sirtuin (silent mating type information regulation 2 homolog) 1, AMPK, and mTORC1. We propose that using AMPK activators such as 5-aminoimidazole-4-carboxamide ribonucleotide, A769662, metformin, and oxidized nicotinamide adenine dinucleotide (NAD+) are practical ways to be employed for achieving better optimized results in stem cell-based transplantation therapies. 相似文献
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Tadayyon F Izadpanahi M Aali S Mazdak H Khorrami MH 《Saudi journal of kidney diseases and transplantation》2012,23(4):782-785
Acute urinary retention (AUR) is one of the most important long-term compli-cations of benign prostatic hyperplasia (BPH). Nitric oxide (NO) as a transmitter can relax smooth muscles of the bladder neck and external sphincter. Several studies have reported that sublingual isosorbide dinitrate (ISDN), as a NO donor, can lead to significant decrease in resting pressure of the external sphincter, and its rapid onset of action may be useful in the treatment of AUR. This study was designed to asses the effect of ISDN on AUR in patients with BPH. In this clinical trial, 60 men with BPH-induced AUR were randomly selected via a simple sampling method. Participants were randomly divided into case and control groups. Patients in the case group received 200 mg of sublingual ISDN and participants in the control group received placebo. After 20 min, participants were asked to void spontaneously and the urine was collected in scale containers. Following this, urethral catheterization was done on all the participants and the residual urine was measured. Data were analyzed using SPSS version 15. There was no signi-ficant difference in the mean age of the two groups (P-value = 0.28). The mean voided urine volume in the case group was 201 mL and, in the control group, it was 18 mL (P = 0.004). About 30% in the case group and 3.3% in the control group could void spontaneously after receiving ISDN or placebo (P = 0.006). In the case group, there was a significant correlation between voided urine volume and total urine volume in the bladder (P = 0.03) and in the size of the prostate (P = 0.001). Our study shows that ISDN can be effective in the treatment of BPH-induced AUR with decrease in bladder outlet resistance. ISDN is more effective in younger men and in those with smaller prostates. 相似文献
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