Showing 161 results for Ag
Azam Fakhri, Soyar Sari, Ahmad Ebrahimi,
Volume 19, Issue 5 (8-2016)
Abstract
Background: Endometriosis disease is considered as a common disease dependent on androgen hormones. Androgens have different effects on endometrial growth. Androgen receptor as a signal transduction pathway could have a key role in regulating the process. Over hundreds of mutations leading to resistance gene function in androgen receptor (AR) has been recorded. Among these, the seuaence of CAG repeat in exon 1 had the largest share of studies related to the disease. The aim of the present study was to investigate the relationship between the AR gene CAG repeat variations in Iranian women with endometriosis.
Materials and Methods: In this study, 100 women with endometriosis and 100 healthy women as controls were selected. Exon 1 was amplified using PCR. Products of PCR were studied to determine CAG repeat variation in acrylamide gels.
Results: The number of CAG repeats in each group was determined between 18-26 repeats (mean±standard, 18.35±3.3).
Conclusion: According to the results of this study, no significant differences were found between the two groups of healthy women and women with endometriosis. The number of CAG repeats in each group was determined between 18-26 repeats which indicates a lack of relationship between CAG repeat diversity and endometriosis. According to the information, this study was conducted on patients with endometriosis in iran for the first time, although studies with larger sample are needed.
Sara Pouriamanesh, Ziba Kamalian, Pedram Shafaat, Mona Amin Bidokhti, Nasser Salsabili, Reza Mirfakhraei,
Volume 19, Issue 6 (9-2016)
Abstract
Background: Azoospermia is defined as the absence of sperm in the semen and is divided in two types; obstructive and non-obstructive azoospermia. Non-obstructive azoospermia include approximately 60% of azoospermia patients. Several genetic and environmental factors can be involved in the development of non-obstructive azoospermia. Until now, several genes have been introduced as the causing factor of the azoospermia that are involved in spermatogenesis and testicular development. These genes are located on Y and/or autosome chromosomes .The aim of the present study was to investigate Y chromosome microdeletions and STAG3 gene mutations in Iranian males with non-obstructive azoospermia.
Materials and Methods: In this study, peripheral blood samples were obtained from 122 men with idiopathic non-obstructive azoospermia and 100 Normo-sperm men who had at least one child and DNA was extracted. Samples were investigated for the presence of Y chromosome microdeletions by Multiplex PCR. Then, existence of probable mutations in exon 7 of STAG3 gene was investigated using MSSCP (multi-temperature single-strand conformational polymorphism) method.
Results: 13 patients (10.66%) had Y chromosome microdeletions, but none of the subjects showed mutation in exon 7 of STAG3 gene. The Y chromosome microdeletions were found in none of the control individuals.
Conclusion: The results showed that Y chromosome microdeletions are the most important cause of non-obstructive azoospermia and should be considered as the main candidate for male infertility diagnostic tests. Mutations in the STAG3 gene are not common among non-obstructive azoospermia patients.
Parisa Tahmasebi, Seyed Reza Kazemi Nezhad , Mohammad Amin Tabatabaiefar, Javad Mohammadi Asl, Nader Saki,
Volume 19, Issue 6 (9-2016)
Abstract
Background: Hearing loss is a common sensory impairment in humans which half of its causes are genetic reasons. Genetic hearing loss can be divided into the two types of syndromic and non-syndromic, which 80% of non-syndromic cases is Autosomal Recessive Non-Syndromic Hearing Loss. The aim of the present research is to determine the contribution of DFNB2 locus (MYO7A gene) in causing an autosomal recessive hearing loss in the one group of the deaf families of Khuzestan province.
Materials and Methods: This study was conducted on 26 families with autosomal recessive hearing loss (with 4 patients) and negative for GJB2 mutations in Khuzestan province. 22 families suffered from ARNSHL and 4 families suffered from Usher syndrome. Linkage analysis was performed by using STR (Short Tandem Repeat) markers related to DFNB2 locus. Each family’s genotype was determined by PCR-PAGE method. Furthermore, haplotypes drawing and LOD score calculations were performed.
Results: From 26 families with hearing loss participating in this research, following genetic linkage analysis and haplotypes drawing, two families (7.7% of the families) showed linkage to DFNB2 locus. One family (4.5%) suffered from ARNSHL and another family suffered from Usher syndrome.
Conclusion: The results of the present research show that the contribution of DFNB2 locus in causing hearing loss in the population of Khuzestan province was similar to other studies conducted in Iran and this locus with other important loci should be considered to check in the hearing loss panel.
Saeid Amini Rarani, Ahmad Ghadami, Ali Akbar Malekirad, Hojatollah Yousefi, Kourosh Mani,
Volume 19, Issue 10 (1-2017)
Abstract
Abstract
Background: Operating room personnel are subject to occupational hazards which could lead to an increase in free radicals and develop various diseases. The aim of the present study was to determine the effect of consuming green tea on the improvement of the blood oxidative biomarkers in operating room personnel who are exposed to anesthetic gases.
Materials and Methods: This study was a before-after clinical trial which was conducted on 24 operating room personnel. They were invited to consume 4 cups of a green tea beverage, prepared from 3 g of green tea leaves in 300 mL of boiled water (at 80˚ C), daily for 8 weeks. Then, Myeloperoxidase (MPO), DNA damage, Glutathione Peroxidase (GPx), and Superoxide Dismutase (SOD) in the plasma were measured in order to evaluate the level of oxidative stress biomarkers before and after consuming green tea.
Results: Green tea consumption by operating room personnel brought about a significant increase in glutathione peroxidase and superoxide dismutase and a considerable decrease in myeloperoxidase and DNA damage.
Conclusion: According to the results of this study, green tea consumption as an antioxidant supplement by operating room personnel, who are regularly exposed to anesthetic gases, can minimize oxidative stress and DNA damage considerably. Thus, it is advisable for operating room personnel to consume green tea as a natural antioxidant supplement.
Hadis Alsadat Adl, Abdollah Shafi`abadi, Zabih Pirani,
Volume 19, Issue 10 (1-2017)
Abstract
Abstract
Background: Infertility is described as a loss that this event is serious tension in life and it makes extreme trauma on couples. This research aimed to investigate the effect of group psychotherapy based on life quality on marriage intimacy of infertile women.
Materials and Methods: This research method was in semi-test methodology with pre-test, post- test and follow-up test plan with control group and statistical sample was 32 persons (16 persons in test group and 16 persons in control group) that they were chosen in available sampling mode from Royan center in Arak and both two groups were peer in research standards. Test group received training for 5 sessions in 90 minute. For collecting data, Bagarozzi marital intimacy questionnaire was used. Data were analyzed by analysis of covariance by using SPSS software.
Results: Results showed that life quality training affected significantly on marriage intimacy of infertile women and improved it. Significant difference between pre-test, post-test and follow-up average scores of test and control groups showed effectiveness of life quality training on infertile women ( p=0.003<0.05 ,f=27.57).
Conclusion: The research showed that group therapy of life quality plan affected on marital intimacy and improved it. Therefore, it is recommended as a supplement.
Mina Zolfaghari, Behzad Khansarinejad, Ali Ganji, Zeinab Hamzehloo, Hamid Abtahi,
Volume 19, Issue 11 (2-2017)
Abstract
Abstract
Background: Ureaplasma and M. genitalium species belong to a kind of bacteria that are sexually transmitted and are the possible cause of pelvic inflammatory disease and nongonococcal urethritis, and et al. The aim of this study was to determine the urea plasma and Mycoplasma genitalium species frequency in women with vaginal infection and various sexual partners who referred to women, s health promotion and treatment center in Arak.
Materials and Methods: Endocervical swab samples from 110 women with vaginal infections referred to women’s health promotion and treatment center in Arak, were prepared. Patients’ personal information and identities during reception process were registered. The samples were transferred to the laboratory in the transport environment and after DNA extraction, were evaluated according to Real-time PCR assay.
Results: Urea plasma and Mycoplasma genitalium bacteria existed in 96(87.27%) and 4(3.63%) of patients, respectively. Among them, 4 cases had both bacteria infections. The amount of isolation in young women between 30-39 years old was more than others.
Conclusion: The results show that the colonization of urea plasma species in adult women is 40-80% and in studied group is 87.27%. These results indicate that with due attention to the increasing number of sexual partners and the increase of sexual activity, the urea plasma colonization of women will increase. In view of the potential influence of mycoplasma species on side effects resulted from pregnancy infection of mothers and mortality, on-time diagnosis and treatment will be increasingly essential.
Zahra Sobhani, Hassan Ahadi, Sadrollah Khosravi, Hamid Poursharifi, Mohammadreza Seirafi,
Volume 20, Issue 1 (4-2017)
Abstract
Abstract
Background: Bariatric surgery is the most effective intervention for treating severe obesity and patient's adherence to self-management behaviors is essential to reduce complications after surgery. The purpose of this study was to investigate the psychometric properties of BSSQ in Iranian population.
Materials and Methods: The statistical society was all of the obese patients that underwent laparoscopic obesity surgery in Shiraz Ghadir Mother & Child Hospital from December 2016 till June 2016, and 201 of them (149 females and 52 males) were selected by using available sampling method. They responded to demographic characteristics, post bariatric surgery self-management behaviors questionnaire and general and specific adherence scales. For validity, methods such as content validity, structural validity (factor analysis and correlation analysis), simultaneous validity were used. The reliability of the questionnaire was determined by using bisection and internal stability methods by Cronbach s alpha.
Results: According to the results of explatory factor analysis, sisx factors including eating behaviors, physical activity, fruits, vegitables, grain and protein intake, fluid intake and dumping syndrome management were elicited, that these 6 factors explained 61.54% of variance of self-management behaviors. Total score of correlation matrix BSSQ with GAS & SAS were 0.363 and 0.702. For reliability, the Cronbach's alpha coefficient of this instrument was found 0.90 and guttman split-half coefficient was 0.78.
Conclusion: Results show that BSSQ has an acceptable validity and reliability and it can be used for assessing the post bariatric surgery self-management behaviors in Iranian population.
Mahtab Khosrofar, Mohammad Reza Pourreza, Samira Asgharzadeh, Parisa Tahmasebi, Elahe Ali Asgari, Reza Ghasemikhah, Nader Saki, Javad Mohammadi-Asl, Morteza Hashemzadeh Chaleshtori, Mohammad Amin Tabatabaiefar,
Volume 20, Issue 3 (6-2017)
Abstract
Abstract
Background: Hearing loss (HL) is the most common congenital defect in humans. One or two in thousand newborn babies have prelingual hearing loss. Autosomal recessive non-syndromic hearing loss (ARNSHL) is the most common form of hereditary deafness. Hearing loss is more common in the developing countries which is due to genetic and environmental (cultural -health factors) reasons. HL has a wide range of clinical demonstrations including: congenital or late onset, conductive or sensory-neural, syndromic or non-syndromic hearing loss. The goal of this project is to determine the portion of the DFNB21 (TECTA) in ARNSHL in families with negative GJB2 gene in Khuzestan province.
Materials and Methods: We studied 21 families with ARNSHL with at least 4 patients and negative for GJB2 mutations from Khuzestan province. Genetic linkage analysis was performed using STR markers linked to DFNB21 locus.
Results: Following genetic linkage analysis and haplotyping, out of 21 families with ARNSHL, one family showed linkage to the DFNB21 (TECTA) locus.
Conclusion: The results of this project confirm other studies in Iran and give insight into the most common loci causing ARNSHL in Iran which could be helpful in research and clinic.
Foad Asjodi, Phd, Hamid Mohebi, Ebrahim Mirzajani, Azimeh Izadi,
Volume 20, Issue 4 (7-2017)
Abstract
Abstract
Background: The aim of this study was to evaluate the effects of supplementation of Branched-Chain Amino Acids (BCAAs) plus carbohydrate (CHO) and whey protein plus CHO on muscle damage indices after eccentric resistant exercise.
Materials and Methods: Twenty four untrained healthy males participated in this study. They were randomly divided into three groups, BCAA +glucose (0.1+0.1g/kg) supplement group (n=8), Whey+glucose (0.1+0.1g/kg) supplement group (n=8), and placebo (malto dextrin 0.2g/kg) group (n=8). Each subject consumed a carbohydrate beverage with addition of whey protein or branched-chain amino acid or placebo 30 minutes before exercise in a randomized,double-blind fashion. Serum levels of Creatine Kinase (CK), Lactate dehydrogenase (LDH), and muscle pain were measured before, 24, 48, 72 h after exercise. Follow-up analyses included 1-way repeated measures ANOVAs, and Bonferroni post hoc comparisons.
Results: 24 h after test, serum levels of CK, LDH and muscle pain in both supplement groups were increased less than placebo group (0.015, 0.001 and 0.001, respectively). Also, the levels of CK and LDH showed significant changes in both intervention groups compared to placebo group at 24 h (0.001, 0. 015, respectively). Similarly, significant differences in the levels of CK and LDH between groups were observed.
Conclusion: These data indicate that muscle damage and pain after resistant exercise were reduced by an ingestion of either BCAA drink or whey protein drink.
Olya Moshiri, Javad Sajedianfard, Mina Gheisari,
Volume 20, Issue 5 (8-2017)
Abstract
Abstract
Background: Pain is a protective process in the body. There are different pathways for pain control in the central nervous system. Descending pain control system is one of pathways. The periaqueductal gray (PAG) is a structure known for its role in pain transmission and modulation. The aim of this study is to investigate the percent of interaction between the left and right PAG in unilateral left foot induced pain.
Materials and Methods: In this study, 60 rats (280+30g) in six groups were used (3test groups and 3 controls groups). In test groups, 0.5 microliter lidocaine was injected in the left PAG, right PAG or both to make local anesthesia. In control groups, 0.5 microliter of normal saline were injected. After 15 minutes, 50 microliter of 2.5% of formalin were injected subcutaneously to right hind paw of rats and nociception was detected in every 15 seconds for one hour.
Results: The induction of unilateral pain (left hind paw) in rats, can affect not only the ipsilateral but also the contralateral PAG nucleus.
Conclusion: This study showed that the left and right PAG nuclei have significant role on unidirectional nociception in formalin test in rats. The contralateral PAG, however, has a minor effect on nociception.
Mohammad Reza Tavakkol, Reza Tajik, Marzyeh Tavakkol,
Volume 20, Issue 5 (8-2017)
Abstract
Abstract
Background: Occupational hygiene is the art and science of the control of the occupational hazards and risk assessment is its most important duty. American Industrial Hygiene Association offered an accurate, sensitive and specific risk assessment method appropriate to the principles of the occupational health. In the present study, Arak Occupational hygienists idea about the strengths, weaknesses, administrative problems and improvement tools was asked.
Materials and Methods: This study is descriptive and analytical research and census in Arak Occupational hygienists(N=53). Data recording forms were designed to improve the appreciation and implementation of the method. An Excel® spreadsheet file was prepared to facilitate the calculations and keeping the recorded data. Experts’ attitude in this regard was evaluated using a questionnaire. Descriptive information was assessed by SPSS software and the relationship between variables was assessed by the Pearson coefficient.
Results Totally, 4% of participants in university were familiar with the method of risk assessment. In this study, 88% of the participants stated that the early identification forms were effective in streamlining the procedure. Furthermore, 84% stated that early identification forms were effective in learning the method. A fundamental issue regarding this method is its simplicity and ability to overall conception; that showed a uniform distribution from appropriate to inappropriate. The relationship between Excel file streamlining and simplicity of its concepts was found to be 0.743.
Conclusion: Application of tools such as identical forms and spreadsheets can help in simplifying and conception of this method and reduce some of the administrative problems.
Mohammad Matini, Samira Bakhtiarnejad, Dara Dastan, Amir Hossein Maghsood, Mohammad Fallah,
Volume 20, Issue 6 (9-2017)
Abstract
Abstract
Background: Trichomoniasis is one of the most common non viral sexually transmitted diseases worldwide. The aim of this study was to investigate the effect of Plantago lanceolata extracts on Trichomonas vaginalis.
Materials and Methods: In this study, after collection and drying of P. lanceolata, n-hexanic, ethyl acetate, methanol and hydroalcoholic extracts, they were prepared by maceration. Five clinical T. vaginalis isoleates subjected to extract suscebtibility testing, in comparison of metronidazole. Minimum inhibitory concentration (MIC) and minimum lethal concentration (MLC) tests were carried out in duplicate and repeated two times for each T. vaginalis isolate.
Results: The results showed that the extracts of P. lanceolata had potent antitrichomonal activity. The most antitrichomonal activity was related to ethyl acetate extract with the least MIC of 500 µg/ml and mean of 1525 µg/ml, after 48 hrs incubation. And also, the lowest antitrichomonal activity was related to hydroalcoholic and methanolic extract with the least and mean MIC of 2000 µg/ml. The results of MLC and MIC tests were identical and this finding confirmed the trichomonacidal activity of the extracts. The drug suscebtibility testing showed that the T. vaginalis isoleates were susceptibale to metronidazole ranging from 3.1 to 6.2 µg/ml with a mean and standard deviation of 4.2 ± 1.5 µg/ml.
Conclusion: This study showed that the extracts of P. lanceolata hav e a considerable activity on T. vaginalis parasite. Hence, further studies are needed to clear more details of antimicrobial properties of P. lanceolata compounds.
Abbas Saremi, Ali Akbar Farahani, Nader Shavandi,
Volume 20, Issue 6 (9-2017)
Abstract
Abstract
Background: Physical exercise is an important and effective part of comprehensive care of seniors, which declines aging progression. Because of the importance of physical activity in cardiovascular diseases prevention this study intends to investigate the comparision of structural and functional characterictics of the heart between middle- aged montaineer men and non-athlete peers.
Materials and Methods: In this cross-sectional and descriptive–analytical study, 13 middle- aged montaineer (age: 54.5±2.0 y, body mass index: 25.59±2.4 kg/m2) who have continues mountain activities during previous 24 months for at least 2 sessions per week, each session lasted 120 minute, and 14 sedentary, healthy peers (age: 54.1±2.2 y, body mass index: 26.8±2.3 kg/m2) who were not currently experiencing any regular physical activity (at least 6 months), were selected. All subjects underwent standard two-dimensional and Doppler echocardiography at rest. Cardio respiratory fitness was assessed using Bruce test. T test was used to compare groups with α=0.05.
Results: The results showed that mountain activities significantly increased left ventricular mass (p=0.03) and left-ventricular-end-diastolic-diameter (p=0.04). We also observed that systolic blood pressure (p=0.04), ejection fraction (p=0.05), stroke volume (p=0.03) and cardio respiratory fitness (p=0.03) were significantly improved by mountain climbing. In some of parameters such as shortening fraction, interventicular septum and left ventricular posterior wall there were no significant differences between groups (p>0.05).
Conclusion: These results suggest that regular mountain sports activities can have beneficial effects on structural and functional characterictics of the heart in middle-aged men.
Ali Asghar Ghafarizadeh, Gholamhassan Vaezi, Seyed Mohammad Ali Shariatzadeh, Ali Akbar Malekirad,
Volume 20, Issue 6 (9-2017)
Abstract
Abstract
Background: In Asthenoteratozoospermic men, low motility, defected DNA and highly oxidative stress in sperm cause poor assisted reproductive techniques (ART) outcomes. The aim of this study was to determine the effect of Vitamin E (Vit E), as a potent antioxidant, on sperm motility, viability and DNA integrity at different times of in vitro incubation (after 2, 4 and 6-h) to improve asthenoteratozoospermic semen samples for ART.
Materials and Methods: Asthenoteratozoospermic semen samples of 50 volunteers were collected and examined. Each sample was divided into two groups of control and vitamin E (2mM) and kept in the 37 °C and 6 % CO2 for 2, 4 and 6 hours. After this incubation, sperm motility, viability and sperm DNA fragmentation (SCD) were evaluated in each group. Data were analyzed using repeated measurement of ANOVA and T-test. The means were considered significantly different at p<0.05.
Results:Significant decrease in total and progressive motility and viability as well as significant increase in sperm DNA damage (after 6h of incubation) were found in control group vs. the control group before incubation (p<0.05). The sperm motility and viability was significantly higher in vitamin E group compared to untreated control group (p<0.05). Our results also showed that DNA fragmentation significantly was lower after 6h of vitamin E treatment (p<0.05).
Conclusion: In vitro supplementation of vitamin E in asthenoteratozoospermia semen samples may protect spermatozoa from maltreatment effect of ROS during sperm sampling via keeping enzymatic and antioxidant process in optimum condition.
Fatemeh Ghatreh Samani, Ali Nourian, Laya Farzadi,
Volume 20, Issue 10 (1-2018)
Abstract
Abstract
Background: Ultrasonography (US) is the most important imaging modality in detecting both intrauterine and ectopic pregnancies. This study aimed to compare serum β-hCG level with Transvaginal Ultrasound in symptomatic patients with ectopic pregnancy.
Materials and Methods: A total of 210 patients with definite diagnosis of ectopic pregnancy were enrolled prospectively. All patients underwent transvaginal US by an experienced radiologist who was blind to the final status of the patient. Serum levels of β-hCG and the time gap between US examination and last menstrual period (LMP) were compared between patients with positive and negative US findings.
Results: US were positive in 194 patients (92.4%) and negative in the remaining 16 patients (7.6%). The two groups were similar in terms of age (median, 31 years vs. 30.5 years, respectively; p=0.57). Both the median time gap between US and LMP (median, 43 days vs. 34 days, p=0.03) and serum level of β-hCG (median, 1027 mIU/ml vs. 172.5 mIU/ml, p<0.001) were significantly higher in patients with positive US findings. Both differences were independent of each other in multivariate analysis. The best discriminative zone was set at a serum β-hCG level of 326 mIU/ml with a sensitivity and specificity of 86.6% and 87.5%, respectively.
Conclusion: According to our findings, both the median serum level of β-hCG and time gap between US and LMP in patients with missed diagnosis of ectopic pregnancy were significantly lower in comparison with correct diagnosis and proposed discriminative zone for serum level of β-hCG in our study is different from the previous studies though further studies are recommended especially in symptomatic patients with suspected ectopic pregnancy.
Atefe Azimi, Abdollah Omidi, Elham Shafiei, Arash Nademi,
Volume 20, Issue 10 (1-2018)
Abstract
- Abstract
- Background: Students face a lot of emotional problems and psychological stress that affect their individual and social adaptation as well as their quality of life. Therefore, examining treatment models for these problems is very important. One of these models, the Fractal Diagnostic Treatment Model, is based on emotional regulation skills for a wide range of emotional disorders that can be used properly. The purpose of this study was to investigate the effectiveness of integrated diagnostic therapy on individual and social adaptations and emotional adjustment.
- Materials and Methods: A total of 70 female students were selected and assigned into two diagnostic groups (35 patients) and control (35 people). The experimental group received 12 sessions of diagnostic diagnosis weekly. Data were gathered in this study by Social Compliance Scale and Graz's Regulatory Emotion Questionnaire. Data were analyzed using descriptive statistics and multivariate covariance analysis (MANCOVA).
- Results: The results showed that transdiagnostic treatment focused on the dimensions of emotional regulation, including: refusal of emotional responses (F = 120.69, p < 0.01), impulse control problems (F = 14.57, p < 0.01), lack of emotional awareness (F =104.82, p< 0.01), lack of emotional resolution (F=42.64, p< 0.01), participation problems (F = 41.00, p<0.01), and limitations in achieving emotional regulation (F = 85.33, p<0. 01) is effective. Also, the results showed that exacerbation-based fetal diagnostic therapy was effective on individual adaptations (F = 146.76, p < 0.01) and social (F = 85.02, p<0.01).
- Conclusion: Regarding the effect of Fract-Intervention therapy based on emotional adjustment on personal and social adaptation and student's emotional adjustment dimensions, these results are applicable to clinical practitioners, counselors and practitioners in academic counseling centers.
Malahat Amani, Hossein Alizade, Esmaeil Shiri,
Volume 20, Issue 10 (1-2018)
Abstract
Abstract
Background: The exact diagnosis of schizophrenic disorder from schizoaffective disorder has always been a challenge for therapists due to the comorbidity of many signs and symptoms. The purpose of this study is to investigate the differential diagnosis of schizophrenia disorder from schizoaffective disorder, focusing on the emotional content of their memories.
Materials and Methods: The present study is a causal-comparative study on 23 male and female patients with schizophrenia and schizoaffective disorder (without any comorbid diagnosis). Using a clinical interview, the emotional events and memories of their lives, as well as the amount of affective and emotional words used by these patients in expressing their memories, have been assessed. To determine the differences between the two groups, the data were analyzed by Chi-square test.
Results: Results showed that men with schizophrenia had a significant difference in expressing the amount of emotional events in their lives, as well as in expressing affective and emotional words compared to schizoaffective men. But, this difference was not observed in schizophrenic and schizoaffective women.
Conclusion: The findings of this study suggest that differential diagnosis of schizophrenia and schizoaffective disorder can be made with emphasis on the emotional content of memories, especially in men.
Sara Karimi Moghadam, Roohollah Dorostkar, Saeed Hesami Takallou,
Volume 20, Issue 11 (2-2018)
Abstract
Abstract
Background: Breast cancer is the most common cancer in Iran and breast cancer is the fifth leading cause of death among women. Diagnosis of breast cancer in early stages could increase the lifetime of more than 90% of patients. Human endogenous retroviruses are as heterochromatic parts of the genome, lack any expression. But in several categories of human cancers, including breast cancer, there is a significant increase in the level of HERV-Kenv mRNA.
Materials and Methods: In this case-control study, blood samples were collected from 40 breast cancer patients admitted in Baqiyatallah Hospital and 20 healthy individuals to study the increased expression of HERV-Kenv mRNA using specific primers and were tested by RT-PCR.
Results: Investigations on the patient and control groups showed that increased expression of mRNA was positive in 60% of patients with breast cancer and negative in all healthy subjects.
Conclusion: The results of this study showed that expression of mRNA HERV Kenv in breast cancer was increased. Since enhancement of mRNA HERV-Kenv in the blood of breast cancer patients occurs in of disease, these retroelements could be used as a diagnostic biomarker
Asefeh Dahmardeh Ghalehno, Maryam Ghavidel-Aliabadi, Zeinab Shahmohamadi, Maliheh Mehrshad, Mohammad Ali Amoozegar, Abolghasem Danesh,
Volume 20, Issue 12 (3-2018)
Abstract
Abstract
Background: Today, discovery and production of new antimicrobial drugs has been emphasized due to the growing of antimicrobial resistance. The purpose of this study was to screen out antimicrobial producing bacteria among halophilic or halotolerant Gram-positive endospore-forming bacteria isolated from different areas of Iran.
Materials and Methods: 62 strains were isolated from salin lakes of Iran, endospore-forming ability was evaluated and further identification of strains was done using 16S rRNA gene sequencing. Screening test was performed using two-layer agar diffusion method in which the indicator strains, Bacillus cereus (ATCC 14579) and Escherichia coli, (PTCC 1330) were inoculated in the seed layer. Finally, the production of antimicrobial active agent during a period of 7 days was studied followed by evaluating the effect of base-layer agar concentration on the dissemination of antibacterial metabolite.
Results: Isolates WT6, R4A19 produced an agent(s) which inhibited the growth of both B.cereuse and E.Coli. The inhibition zone against only E.Coli was observed when R4A20 strain had been cultured in the base layer, while four non-bacillus strains (R4S2, LbS2, RF1 and WT19) could inhibit the growth of B.cereuse. The antibacterial compound production of WT6 against Bacillus cereuse and E.Coli reached to its optimumm leved after 3 and 4 days respectively, while R4A20 produced the active substance, optimally, after 5 days. No significant difference effect on diameter of zone inhibition was observed among various base-layer agar concentrations.
Conclusion: Halophile or halotolerant endospore-forming bacteria isolated from different areas of Iran possess a potential to be considered as interesting microorganisms for further antimicrobial research studies.
Mina Ghasemi, Zeinab Khazaei Koohpar, Mojtaba Falahati,
Volume 21, Issue 3 (6-2018)
Abstract
Background and Aim: Prolonged ischemia in organs with high metabolic rates such as brain and heart is associated with deleterious effects. Therefore, nutritive distribution through angiogenesis after ischemia is necessary for repairing damaged region of tissue. In this study, the effects of iron oxide nanoparticles and magnetic field on angiogenesis after ischemia reperfusion (IR) in rat model have been investigated.
Materials and Methods: In this experimental study, fifty male rats aged between 6 -7 weeks at the 220-250gr weight were purchased from Tehran University. Animals were categorized in 5 groups including sham (ischemia reperfusion model), control, iron oxide nanoparticles-treated, magnetic field-exposed, and combination therapy with iron oxide nanoparticles and magnetic field-exposed groups. Angiogenesis was evaluated in hippocampus of 5 groups after 4 days by H&E staining method. The expression of Vegfa gene was studied in 5 groups by Q-RT- PCR.
Findings: Iron oxide nanoparticles as well as the magnetic field induced angiogenesis during 4 days in animals after IR (p<0.05), but their combination therapy did not show any significant difference compared to sham group during 4 days. Upregulation of Vegfa gene was observed in iron oxide nanoparticles treated group and the magnetic field exposed group significantly (p<0.05) relative to ischemia reperfusion (IR) model. But overexpression of Vegfa gene in combination therapy group was not significant relative to ischemia reperfusion (IR) group.
Conclusion: It seems that iron oxide nanoparticles and magnetic field can separately be two effective methods for angiogenesis after ischemia reperfusion (IR).