Effect of First Line Gastric Cancer Chemotherapy Regime on the AGS Cell Line - MTT Assay Results

Alizadeh-Navaei, Reza,Rafiei, Alireza,Abedian-Kenari, Saeid,Asgarian-Omran, Hossein,Valadan, Reza,Hedayatizadeh-Omran, Akbar Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.1

Background: Combination chemotherapy regimes are common treatments for cancer. The aim of this study was to evaluation the effect of individual chemotherapeutic agents in comparison with a first line chemotherapy regime treatment in the AGS gastric cancer cell line by MTT assay. Materials and Methods: In this experimental study, AGS cells were grown in RPMI-1640 supplemented with 10% fetal calf serum and 100 IU/ml penicillin, and $10{\mu}g/ml$ streptomycinin, under a humidified condition at $37^{\circ}C$ with 5% CO2. All cells were washed with PBS and detached with trypsin, centrifuged and 8000 cells re-plated on to 96- well plates. LD50 doses of Epirubicin, Cisplatin and 5-fluorouracil were added to each well in mono or triple therapy. Anti-proliferative activities were determined by MTT assay after 24, 48 or 72 h. Results: Results of MTT assays showed that there were no significant differences among 3 drugs in monotherapy (p=0.088), but there was significant difference between combination therapy with epirubicin (P=0.031) and 5FU (p=0.013) on cell survival at 24 h. After 48 and 72 hours, cell viability showed significant differences between the 3 drugs (p=0.048 and P=0.000 for 48 and 72 h, respectively) and there was significant difference between combination therapy with epirubicin (P=0.035 and P=0.002 for 48 and 72 h, respectively). Conclusions: The results showed no significant differences between these chemotherapy drugs each given alone, but combination therapy with 3 drugs had significant effects on cell viability in comparison with epirubicin alone.

Does the systemic administration of l-arginine affect dental implant stability in nicotine consumer dogs?

Movahedian Bijan,Rismanchian Mansour,Navaei Hooman,Tavanafar Saeid,Koushaei Soheil 대한악안면성형재건외과학회 2021 Maxillofacial Plastic Reconstructive Surgery Vol.43 No.-

Nicotine can have detrimental effects on dental implant osseointegration. This study aimed to evaluate the influence of systemic l -arginine supplement on the osseointegration of dental implants in nicotine consumer dogs. Twelve 1-year Labrador Retriever dogs had their right and left third and fourth mandibular premolars removed, and the sockets were left to heal for 6 months. Dogs were randomly divided into three groups ( n = 16): group 1—0.2 mg/kg nicotine was injected twice daily; group 2—0.2 mg/kg nicotine was injected twice daily in addition to 200 mg/kg l -arginine capsules taken orally; and group 3—placebo. Forty-eight dental implants were inserted into the healed sockets of the dog’s mandible and were assessed by implant stability quotient (ISQ) using resonance frequency analysis (RFA) during 4 weeks and insertion and removal torque value analysis. No implant failure occurred during the study period. The change in torque value between insertion and removal was similar in the placebo and nicotine+arginine consumer dogs ( p = 0.276), which shows a positive effect of arginine supplementation in nicotine consumers. There was a significant difference in torque value change between nicotine+arginine vs. nicotine consumers ( p = 0.049) and placebo vs. nicotine ( p = 0.003). After 4 weeks, the placebo had the most significant improvement in torque value (47.0 ± 16.9), followed by nicotine+arginine (25.1 ± 37.8), and the worst torque value was for the nicotine group (− 5.7 ± 24.0) pound per inch. The results show that except in the first week, there are significant differences in ISQ between the groups in different periods. ISQ in all of the groups has reduced at first but then increased over time. At the time of implant placement, insertion torque was significantly higher in the nicotine consumer group than the nicotine+arginine consumer group and placebo group ( p = 0.020). Arginine supplementation promotes bone healing and implant primary stability by improving dental implant osseointegration biomechanical characteristics.

Effects of Montmorency Tart Cherry Juice Consumption on Cardiometabolic Biomarkers in Adults with Metabolic Syndrome: A Randomized Controlled Pilot Trial

Sarah A. Johnson,Negin Navaei,Shirin Pourafshar,Salvador J. Jaime,Neda S. Akhavan,Stacey Alvarez-Alvarado,Gabriela V. Proano,Nicole S. Litwin,Elizabeth A. Clark,Elizabeth M. Foley,Kelli S. George,Marc 한국식품영양과학회 2020 Journal of medicinal food Vol.23 No.12

Greater than one-third of adults in the United States have metabolic syndrome (MetS), a cluster of risk factors highly associated with the development of cardiovascular diseases. Premature vascular dysfunction in MetS may lead to accelerated age-related atherogenesis and arterial stiffening, thereby increasing cardiovascular risk. Montmorency tart cherries (Prunus cerasus L.) are rich in bioactive compounds, such as anthocyanins, known to exert cardiovascular protective effects. Previous research suggests that tart cherry juice consumption may improve cardiovascular health. The objective of this study was to evaluate the effects of daily consumption of tart cherry juice on hemodynamics, arterial stiffness, and blood biomarkers of cardiovascular and metabolic health in men and women with MetS. In a randomized, single-blind, placebo-controlled, parallel-arm pilot clinical trial, 19 men and women 20 to 60 years of age with MetS consumed 240 mL of tart cherry juice (Tart Cherry; n = 5 males, 4 females) or an isocaloric placebo-control drink (Control; n = 5 males, 5 females) twice daily for 12 weeks. Arterial stiffness (pulse wave velocity), brachial and aortic blood pressures, wave reflection (augmentation index), and blood biomarkers of cardiovascular and metabolic health were assessed at baseline and 6 and 12 weeks. Oxidized low-density lipoprotein and soluble vascular cell adhesion molecule-1 were significantly lower (P = .047 and P = .036, respectively) in Tart Cherry than Control at 12 weeks, but were not significantly lower than baseline values. There was a trend for total cholesterol to be lower (P = .08) in Tart Cherry than Control at 12 weeks. No significant changes were observed in hemodynamics, arterial stiffness, or other blood biomarkers assessed. These results suggest that daily tart cherry consumption may attenuate processes involved in accelerated atherogenesis without affecting hemodynamics or arterial stiffness parameters in this population. The pilot nature of this study warrants interpreting these findings with caution, and future clinical trials with a larger sample size are needed to confirm these findings.

Epidemiological and Demographic Study of Patients with Mucormycosis and COVID-19

Nader Saki,Alireza Rafati Navaei,Ali Delirrooyfard,Mina Jahangiri,Roomina Bagheri 대한의진균학회 2023 대한의진균학회지 Vol.28 No.2

Background: Coronavirus disease 2019 (COVID-19) is associated with many bacterial and fungal diseases. Aspergillus and Candida have been reported as major pathogens resulting to comorbid infections in COVID-19 patients. Objective: Recent studies have shown a considerable burden of cases affected by mucormycosis after coronavirus disease 2019 (COVID-19) infection worldwide, and some underlying factors may contribute to this condition. Hence, this study aimed to investigate the epidemiology and demographic characteristics of mucormycosis patients after COVID-19 infection in the Ahvaz province of Iran. Methods: This descriptive-analytical epidemiological study was conducted on patients who developed mucormycosis following COVID-19 for a 6-month period in 2021. A checklist based on symptoms and possible risk factors was used to collect patient information. Results: The results showed that conjunctivitis, ophthalmalgia, facial swelling, feeling of pain or pressure in the face, and sinusitis were the most common clinical manifestations of patients with mucormycosis following COVID-19. Additionally, there was a significant association between corticosteroid and prophylactic antibiotic use, pain or pressure in the face, and ophthalmalgia with the outcome variables including alive or dead (p-values = 0.002, 0.011, 0.034, and 0.004, respectively). No statistically significant difference was found between the ages of the two groups (p-value = 0.495). Conclusion: The study findings revealed that the most common risk factors for mortality include diabetes, immune system defects, and use of prophylactic antibiotics or corticosteroids.

Evaluation of performance of eccentric braced frame with friction damper

J. Vaseghi Amiri,B. Navayinia,S. Navaei 국제구조공학회 2011 Structural Engineering and Mechanics, An Int'l Jou Vol.39 No.5

Nonlinear dynamic analysis and evaluation of eccentric braced steel frames (EBF) equipped with friction damper (FD) is studied in this research. Previous studies about assessment of seismic performance of steel braced frame with FD have been generally limited to installing this device in confluence of cross in concentrically braced frame such chevron and x-bracing. Investigation is carried out with three types of steel frames namely 5, 10 and 15 storeys, representing the short, medium and high structures respectively in series of nonlinear dynamic analysis and 10 slip force values subjected to three different earthquake records. The proper place of FD, rather than providing them at all level is also studied in 15 storey frame. Four dimensionless indices namely roof displacement, base shear, dissipated energy and relative performance index (RPI) are determined in about 100 nonlinear dynamic analyses. Then average values of maximum roof displacement, base shear, energy dissipated and storey drift under three records for both EBF and EBF equipped with friction damper are obtained. The result indicates that FD reduces the response compared to EBF and is more efficient than EBF for taller storey frames.

Role of HER2 in Brain Metastasis of Breast Cancer: a Systematic Review and Meta-Analysis

Hedayatizadeh-Omran, Akbar,Rafiei, Alireza,Alizadeh-Navaei, Reza,Tehrani, Mohsen,Valadan, Reza,Moradzadeh, Kambiz,Panbechi, Mohammad,Taghavi, Seyed Mehdi Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.4

Background: Breast cancer is one of the most common cancers among women worldwide and the HER2 receptor plays an important role in its development and progression. This systematic review aimed to summarize the role of HER2 in brain metastasis in patients with breast cancer. Materials and Methods: We conducted a literature search by advanced search in title field using the Scopus, Pubmed, and Google scholar databases until the end of June 2014. With metastasis, metastatic, HER2, brain, and breast cancer, as terms of search we selected 31 articles, which were reviewed by two independent and blinded expert reviewers. The studies were first selected according to their titles and abstracts. Quality of the studies were then assessed using the STROBE (Strengthening the Reporting of Observational Studies in Epidemiology) protocol for observational studies and CONSORT(Consolidation of Standards for Reporting Trials) protocol for clinical trials. For statistical analyses, we used STATA, version 11.0 software. Forest and funnel diagrams were drawn and for heterogeneity, index was also considered. Also we used meta regression analysis. Results: Finally, we reviewed 10 studies. The prevalence of brain metastasis in HER2-positive breast cancer patients was 24.9%. There was publication bias in the reviewed studies. Meta regression analysis showed that follow up time had no significant effect (p=0.396) on the prevalence of brain metastasis. Conclusions: The results showed a high prevalence of brain metastasis in HER2 positive breast cancer patients.

Evaluation of performance of eccentric braced frame with friction damper

Vaseghi Amiri, J.,Navayinia, B.,Navaei, S. Techno-Press 2011 Structural Engineering and Mechanics, An Int'l Jou Vol.39 No.5

Nonlinear dynamic analysis and evaluation of eccentric braced steel frames (EBF) equipped with friction damper (FD) is studied in this research. Previous studies about assessment of seismic performance of steel braced frame with FD have been generally limited to installing this device in confluence of cross in concentrically braced frame such chevron and x-bracing. Investigation is carried out with three types of steel frames namely 5, 10 and 15 storeys, representing the short, medium and high structures respectively in series of nonlinear dynamic analysis and 10 slip force values subjected to three different earthquake records. The proper place of FD, rather than providing them at all level is also studied in 15 storey frame. Four dimensionless indices namely roof displacement, base shear, dissipated energy and relative performance index (RPI) are determined in about 100 nonlinear dynamic analyses. Then average values of maximum roof displacement, base shear, energy dissipated and storey drift under three records for both EBF and EBF equipped with friction damper are obtained. The result indicates that FD reduces the response compared to EBF and is more efficient than EBF for taller storey frames.

Associations between body dysmorphic disorder (BDD) with the dental health component of the index of orthodontic treatment need (IOTN-DHC) and other BDD risk factors in orthodontic patients: A preliminary study

Farhad Sobouti,Foruzan Elyasi,Reza Alizadeh Navaei,Farbod Rayatnia,Nika Rezaei Kalantari,Sepideh Dadgar,Vahid Rakhshan 대한치과교정학회 2023 대한치과교정학회지 Vol.53 No.1

Objective: Body dysmorphic disorder (BDD) is a form of obsessive-compulsive disorder that may be negatively associated with the self-image. It might be associated with orthodontic treatment demand and outcome, and therefore is important. Thus, this study was conducted. Methods: The Yale-Brown Obsessive-Compulsive Scale modified for Body Dysmorphic Disorder (BDD-YBOCS) questionnaire was used in 699 orthodontic patients above 12 years of age (222 males, 477 females), at seven clinics in two cities (2020–2021). BDD diagnosis and severity were calculated based on the first 3 items and all 12 items of the questionnaire. The dental health component of the index of orthodontic treatment need (IOTN-DHC) was assessed by orthodontists. Multivariable and bivariable statistical analyses were performed on ordinal and dichotomized BDD diagnoses to assess potentially associated factors (IOTN-DHC, age, sex, marital status, education level, and previous orthodontic consultation) (α = 0.05). Results: IOTN-DHC scores 1–5 were seen in 13.0%, 39.9%, 29.8%, 12.4%, and 4.9% of patients. Age/sex/marital status/education were not associated with IOTN-DHC (p > 0.05). Based on 3-item questionnaire, 17.02% of patients had BDD (14.02% mild). Based on 12-item questionnaire, 2.86% had BDD. BDD was more prevalent or severer in females, married patients, patients with a previous history of orthodontic consultation, and patients with milder IOTN-DHCs (p < 0.05). Conclusions: IOTN-DHC was negatively/slightly associated with BDD in orthodontic patients. Being female and married may increase BDD risk.

Effect of second metal on the selectivity of Mn/H-ZSM-5 catalyst in methanol to propylene process

N. Hadi,S.R. Nabavi,A. Niaei,M. Navaei Shirazi,R. Alizadeh 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.29 No.-

In order to attain to the higher selectivity of propylene in the process of methanol conversion topropylene (MTP) over H-ZSM-5, the bi element catalysts were prepared by Mn/H-ZSM-5 and each ofCe, Cr, Fe, P and Ni promoters. The results revealed that the Ce–Mn/H-ZSM-5 demonstrated the highestselectivity to propylene. Response surface methodology was applied to optimize the preparationparameters (second metal loading, calcination temperature and calcination time) of the bimetallicCe–Mn/H-ZSM-5 catalyst. Kinetic modeling is performed in the reaction temperature range of440–500 8C and in the different weight hourly space velocities of methanol (i.e., 2.51, 4.18 and8.37 h 1). A reaction mechanism based on the theory of hydrocarbon pool and conjugate methylation/cracking mechanisms is applied for the MTP. The hybrid genetic algorithm is employed to calculate thekinetic parameters.

Estimating the Survival of Patients With Lung Cancer: What Is the Best Statistical Model?

Siavosh Abedi,Ghasem Janbabaei,Mahdi Afshari,Mahmood Moosazadeh,Masoumeh Rashidi Alashti,Akbar Hedayatizadeh-Omran,Reza Alizadeh-Navaei,Ehsan Abedini 대한예방의학회 2019 Journal of Preventive Medicine and Public Health Vol.52 No.2

Objectives: Investigating the survival of patients with cancer is vitally necessary for controlling the disease and for assessing treatment methods. This study aimed to compare various statistical models of survival and to determine the survival rate and its related factors among patients suffering from lung cancer. Methods: In this retrospective cohort, the cumulative survival rate, median survival time, and factors associated with the survival of lung cancer patients were estimated using Cox, Weibull, exponential, and Gompertz regression models. Kaplan-Meier tables and the log-rank test were also used to analyze the survival of patients in different subgroups. Results: Of 102 patients with lung cancer, 74.5% were male. During the follow-up period, 80.4% died. The incidence rate of death among patients was estimated as 3.9 (95% confidence [CI], 3.1 to 4.8) per 100 person-months. The 5-year survival rate for all patients, males, females, patients with non-small cell lung carcinoma (NSCLC), and patients with small cell lung carcinoma (SCLC) was 17%, 13%, 29%, 21%, and 0%, respectively. The median survival time for all patients, males, females, those with NSCLC, and those with SCLC was 12.7 months, 12.0 months, 16.0 months, 16.0 months, and 6.0 months, respectively. Multivariate analyses indicated that the hazard ratios (95% CIs) for male sex, age, and SCLC were 0.56 (0.33 to 0.93), 1.03 (1.01 to 1.05), and 2.91 (1.71 to 4.95), respectively. Conclusions: Our results showed that the exponential model was the most precise. This model identified age, sex, and type of cancer as factors that predicted survival in patients with lung cancer.