مرتضوی, سید محمد جواد
دانشکده پزشکی و مرکز تحقیقات علوم پرتوی دانشکده پیراپزشکی دانشگاه علوم پزشکی شیراز
[ 1 ] - معرفی ویژگی‌های Cool Clot ، عامل هموستاتیک اختراعی جدید
چکید ه سابقه و هدف خونریزی کنترل نشده، عامل مرگ و میر در صدمات نظامی و در حوادث غیر نظامی است. توقف غیر فشاری خونریزی از جمله اقداماتی است که امکان زنده ماندن افراد مجروح را افزایش می‌دهد. هدف از این مطالعه، بررسی کارآیی Cool Clot در کنترل خونریزی‌های شریانی و کاهش زمان تشکیل لخته بود. مواد و روش‌ها در یک مطالعه تجربی، سه قلاده سگ هیبریدی انتخاب گردیده و پونکسیون شریانی به وسیله سوز...
[ 2 ] - مروری بر تکنیک هادرون درمانی
Despite major progress in radiotherapy, exponential attenuation of initial photons due to the nature of their interaction with matter has remained as the most important challenge. Photons have no well-defined range and their doses are reduced exponentially. Therefore, tissues located before and after the tumors receive a significant dose. Today, new techniques based on proton and carbon charged...
[ 3 ] - اثر تمرین هوازی منظم بر شاخص‌های آسیب اکسیداتیو لیپیدها و پروتئین ها در رت های مواجهه یافته با اشعه ساطع شده از روتر Wi-Fi
Background & Aim: Electronic and communication devices have largely become a part of our daily lives. And this has caused a growing concern with regards to the possible side-effects of exposure to the radiation of these devices on human health. To investigate the same, a research was undergone to study the "Effect of regular aerobic exercise on oxidative damage markers of lipids and protei...
[ 4 ] - Radiation attenuation properties of shields containing micro and Nano WO3 in diagnostic X-ray energy range
Background: It has recently been shown that the particle size of materials used for radiation shielding can affect the magnitude of radiation attenuation. Over the past years, application of nano-structured materials in radiation shielding has attracted attention world-wide. The purpose of this study was to investigate the shielding properties of the lead-free shields containing micro and nano-...
[ 5 ] - Effects of microwave electromagnetic radiations emitted from common Wi-Fi routers on rats’ sperm count and motility
Background: Wi-Fi allows electronic devices such as laptops to exchange data or connect to a network resource. The main goal of this study was to assess the bioeffects of short term exposure to 2.4 GHz microwave radiation emitted from a common Wi-Fi router on sperm quality. Materials and Methods: Male Wistar rats were divided into 7 groups; I, sham exposed 4 h/day for 7days at 30 cm from ...
[ 6 ] - The effect of superposition of 900 MHz and incoherent noise electromagnetic fields on the induction of reactive oxygen species in SP2/0 cell line
Background: Induction of cellular response after exposure to electromagnetic fields is limited to coherent fields. An incoherent noise field is supposed to suppress the bioeffects of regular RF electromagnetic fields. The purpose of this study was to investigate the effect of GSM mobile phone-induced radiofrequency (RF) on the induction of oxidative stress in SP2/0 cell line. Materials and Meth...
[ 7 ] - Alterations of PSA, CA15.3, CA125, Cyfra21-1, CEA, CA19.9, AFP and Tag72 tumor markers in human blood serum due to long term exposure to high levels of natural background radiation in Ramsar, Iran
Background: Ramsar (Mazandran province) is known for its extremely high levels of natural background radiation. Although no excess cancer rate is reported in these areas by epidemiological studies, the study of tumor markers in the inhabitants of these areas may shed some light on the impact of high levels of background radiation on cancer induction. Materials and Methods: The level of backgrou...
[ 8 ] - Natural ventilation considerations for radon prone areas of Ramsar
Background: In Iran, architectures are often unaware of the risk of radon inhalation and how to reduce radon levels. Furthermore, radon considerations are not implemented in construction methods, construction materials and building utilization by regulatory authorities. Materials and Methods: In this study after reviewing the meteorological changes of Ramsar over the past 50 years (1955-2005), ...
[ 9 ] - The challenging issue of pre-conception irradiation of parents: Are we walking in a dark road?
No Abstract Available.
[ 10 ] - Assessment of the role of specific absorption rate of mobile phones on the induction of microwave-induced survival adaptive responses after exposure to lethal doses of gamma radiation
Background: Whether exposure to common electromagnetic fields affects human health adversely has been a controversial issue. The main goal of this study was to assess the role of 900 MHz microwave radiations with different specific absorption rates (SARs), emitted from some widely used cell phones, on the induction of adaptive response in male Balb/c mice after receiving a lethal dose of gamma ...
[ 11 ] - Non-linear phenomena in biological findings of the residents of high background radiation areas of Ramsar
Some Areas of Ramsar, a city in northern Iran are among the world’s wellknown inhabited areas with highest levels of natural radiation. Annual exposure levels in these areas are up to 260 mGy y‐1 and the mean exposure rate is about 10 mGy y‐1 for a population of about 2000 residents. If elevated levels of natural radiation as high as a few hundred mSv per year is detrimental to health and...
[ 12 ] - Is it time to shed some light on the black box of health policies regarding the inhabitants of the high background radiation areas of Ramsar?
Although there are substantial experimental, epidemiological and clinical evidences that high doses of ionizing radiation cause cancer and other detrimental biological effects, the health effects of human exposure to chronic low dose radiation exposures are still poorly known. People in some areas around the world live in dwellings with radiation and radon levels as much as more than 2...
[ 13 ] - A comparative study on the increased radioresistance to lethal doses of gamma rays after exposure to microwave radiation and oral intake of flaxseed oil
Background: Mobile phones, use electromagnetic radiation in the microwave range. On the other hand, there is only one report on radioprotective effects of flaxseed oil. The aim of this study was to investigate the effect of irradiation of rats with microwaves and/or treatment with flaxseed oil on the induction of adaptive response to a subsequent lethal dose (LD) of gamma rays. Materia...
[ 14 ] - Production of a datolite-based heavy concrete for shielding nuclear reactors and megavoltage radiotherapy roomsProduction of a Datolite-Based Heavy Concrete
Background: Biological shielding of nuclear reactors has always been a great concern and decreasing the complexity and expense of these installations is of great interest. In this study, we used datolite and galena (DaGa) minerals for production of a high performance heavy concrete. Materials and Methods: Datolite and galena minerals which can be found in many parts of Iran were used i...
[ 15 ] - A survey on stimulatory effects of topical application of radioactive lantern mantle powder on wound healing
Background: Poorly educated people in some parts of Iran use burned mantles as a wound healing medicine. Materials and Methods: To perform surface area measurement, twenty rats were divided randomly into two groups of 10 animals each. The first group received topical burned radioactive lantern mantle powder on the first to third days after making excision wounds. The second group rece...
[ 16 ] - Production of an economic high-density concrete for shielding megavoltage radiotherapy rooms and nuclear reactors
Background: In megavoltage radiotherapy rooms, ordinary concrete is usually used due to its low construction costs, although higher density concrete are sometimes used, as well. The use of high-density concrete decreases the required thickness of the concrete barrier hence, its disadvantage is its high cost. In a nuclear reactor, neutron radiation is the most difficult to shield. A method for p...
[ 17 ] - Evaluation of the Interference of the Microwave Radiation Emitted from GSM Mobile Phones on the Performance of Cell Counters
Abstract Background and Objectives: Incidents related to electromagnetic interference with medical devices have been reported over the past decades. It has also been indicated that the microwave radiation emitted from mobile phones interferes with the operation of medical devices therefore, this study aimed at testing the interference by GSM mobile phones with cell counters. Material and Method...
[ 21 ] - پزشکی نبوی و جهان غرب
[ 22 ] - تأثیر پودر توری فانوس رادیواکتیو و کانی‌های زئولیت و بنتونیت بر حجم، زمان خونریزی و زمان تشکیل لخته در موش‌های صحرایی
چکیده مقدمه و هدف: در دهه گذشته ارتش آمریکا مطالعات گسترده‌ای را در زمینه فناوری‌های نوین برای متوقف کردن خونریزی‌های شدید شروع نموده و ترکیب مؤثری از نوعی کانی به نام زئولیت را معرفی کرده است. که استفاده از پودر توری‌های فانوس سوخته شده رادیواکتیو، ترمیم زخم را تسریع می‌نماید. آزمایش‌های بعدی آنها مشخص نمود که استفاده از پودر توری رادیواکتیو موجب پدید آمدن مجموعه تغییرات بافت‌شناختی می‌گرد...
[ 23 ] - Comparing of different normal tissue complication probability models for plan evaluation of radical radiotherapy for esophageal cancer
Introduction: Chemoradiation is a well-established protocol for management of localized esophageal cancer. However, some early and late toxicities are associated with this therapy. Plan evaluation in term of normal tissue complication probability (NTCP) may help clinicians to tailor this therapy more individually. Given the variety of present radiobiological models, the choice...
[ 24 ] - Increased Release of Mercury from Dental Amalgam Fillings due to Maternal Exposure to Electromagnetic Fields as a Possible Mechanism for the High Rates of Autism in the Offspring: Introducing a Hypothesis
According to the World Health Organization (WHO), factors such as growing electricity demand, ever-advancing technologies and changes in social behaviour have led to steadily increasing exposure to man-made electromagnetic fields. Dental amalgam fillings are among the major sources of exposure to elemental mercury vapour in the general population. Although it was previously believed that low ...
[ 25 ] - Effect of 900 MHz Electromagnetic Radiation on the Induction of ROS in Human Peripheral Blood Mononuclear Cells
Background, Despite numerous studies over a decade, it still remains controversial about the biological effects of RF EMF emitted by mobile phone telephony. Objective, Here we investigated the effect of 900 MHz GSM on the induction of oxidative stress and the level of intracellular reactive oxygen species (ROS) in human mononuclear cells, monocytes and lymphocytes as defence system cells. Metho...
[ 26 ] - Does Occupational Exposure of Shahid Dastghieb International Airport Workers to Radiofrequency Radiation Affect Their Short Term Memory and Reaction Time?
Background: Airport workers are continuously exposed to different levels of radiofrequency microwave (RF/MW) radiation emitted by radar equipments. Radars are extensively used in military and aviation industries. Over the past several years, our lab has focused on the health effects of exposure to different sources of electromagnetic fields such as cellular phones, mobile base stations, mobile ...
[ 27 ] - A Challenging Issue in the Etiology of Speech Problems: The Effect of Maternal Exposure to Electromagnetic Fields on Speech Problems in the Offspring
Background: Nowadays, mothers are continuously exposed to different sources of electromagnetic fields before and even during pregnancy. It has recently been shown that exposure to mobile phone radiation during pregnancy may lead to adverse effects on the brain development in offspring and cause hyperactivity. Researchers have shown that behavioral problems in laboratory animals which have a s...
[ 28 ] - New Horizons in Enhancing the Proliferation and Differentiation of Neural Stem Cells Using Stimulatory Effects of the Short Time Exposure to Radiofrequency Radiation
Mobile phone use and wireless communication technology have grown explosively over the past decades. This rapid growth has caused widespread global concern about the potential detrimental effects of this technology on human health. Stem cells generate specialized cell types of the tissue in which they reside through normal differentiation pathways. Considering the undeniable importance of stem ...
[ 29 ] - Electromagnetic Radiofrequency Radiation Emitted from GSM Mobile Phones Decreases the Accuracy of Home Blood Glucose Monitors
Mobile phones are two-way radios that emit electromagnetic radiation in microwave range. As the number of mobile phone users has reached 6 billion, the bioeffects of exposure to mobile phone radiation and mobile phone electromagnetic interference with electronic equipment have received more attention, globally. As self-monitoring of blood glucose can be a beneficial part of diabetes control, ho...
[ 30 ] - Introducing the RadBioStat Educational Software: Computer-Assisted Teaching of the Random Nature of Cell Killing
The interaction of radiation with cells and tissues has a random nature. Therefore, understanding the random nature of cell killing that is determined by Poisson distribution statistics is an essential point in education of radiation biology. RadBioStat is a newly developed educational MATLAB-based software designed for computer-assisted learning of the target theory in radiation biology. Altho...
[ 31 ] - Exposure to Mobile Phone Radiation Opens New Horizons in Alzheimer’s Disease Treatment
Alzheimer’s disease, the most common type of dementia and a progressive neurode-generative disease, occurs when the nerve cells in the brain die. Although there are medications that can help delay the development of Alzheimer’s disease, there is cur-rently no cure for this disease. Exposure to ionizing and non-ionizing radiation may cause adverse health effects such as cancer. Looking at th...
[ 32 ] - A Novel Design for Production of Efficient Flexible Lead-Free Shields against X-ray Photons in Diagnostic Energy Range
Background: Lead-based radiation shields are widely used in radiology departments to protect both workers and patients from any unnecessary exposure to ionizing radiation. Recently there has been a great deal of concern expressed about the toxicity of lead. Human lead toxicity is well documented. In that light, production of environmentally-friendly lead-free radiation shields with less weight ...
[ 33 ] - The assessment of function, histopathological changes, and oxidative stress in liver tissue due to ionizing and non-ionizing radiations
Background: Compared to past decades, humans are exposed to rapidly increasing levels of radiofrequency electromagnetic radiations (RF-EMF). Despite numerous studies, the biological effects of human exposure to different levels of RF-EMF are not fully understood, yet. This study aimed to evaluate the bioeffects of exposure to "900/1800 MHz" and “2.4 GHz" RF-EMFs, and x-rays as well as their pot...
[ 34 ] - Effects of gamma radiation on adipose-derived mesenchymal stem cells of human breast tissue
Background: During radiation therapy, stromal cells surrounding the tumor (e.g mesenchymal stem cells) may affect the treatment outcomes. We aimed to investigate the effects of gamma radiation on the mRNA expression of cytokines, DNA damage and population doubling time (PDT) of adipose-derived mesenchymal stem cells (ASCs). Material and methods: ASCs were enzymatically extracted from breast tis...
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