Showing 46 results for Protein
Hamid Abtahi, Ali Hatef Salmanian, Sima Rafati, Ghorban Behzadian Nejad,
Volume 7, Issue 1 (3-2004)
Abstract
Introduction: Brucellosis is one of the most important zoonotic diseases that causes miscarriage and infertility in animals and causes human fever. The use of the common SS9 strain of Brucella abortus has several side effects for livestock. Brucella P39 protein is one of the plasma peripheral space proteins that is considered as one of the important immunogenic indicators. With the production of the new protein combination of P39, more studies can be done on the ability of this protein to stimulate immune responses against Brucella. Therefore, in this research, the production and purification of this protein in Escherichia coli bacteria has been done as a new compound.
method: In this experimental study, using the polymerase chain reaction, the P39 gene was propagated by the bacterium Brucella abortus. After purifying the P39 gene, it was cloned into plasmid carriers pSK+ and pGEX4T1. Therefore, pSK+-P39 and pGEX4T1-P39 structures were prepared. To produce the recombinant protein P39, the plasmid structure pGEX4T1-P39 first entered the Escherichia coli bacterium BL21. The protein was then produced by IPTG by induction of pGEX4T1-P39 plasmid. The resulting protein was purified using the orderly purification protein glutathione S-transferase. The amount of purified protein was measured using the Brad Ford method.
Results: The nucleotide sequence of the gene propagated by the cloned PCR in the plasmid carrier pSK+ was exactly the same as the P39 gene of Brucella abortus. Production of P39 protein was performed by induction of pGEX4T1-P39 plasmid. The purified protein content was 200 micrograms per milliliter.
Conclusion: The production of the new protein P39 compound Brucella Abortus, which is unstable in the cytoplasm of the Escherichia coli bacterium, is possible using carriers with additive proteins such as pGEX4T1 in the host of Escherichia coli strain BL21.
Dr Hamid Abtahi, Dr Ali Hatef Salmanian, Dr Sima Rafati,
Volume 9, Issue 1 (3-2006)
Abstract
Introduction: In many studies, immunogenicity of Brucella proteins such as P39 in animals is investigated. In this study, we evaluated antigenicity of recombinant P39 from Brucella abortus in patients with Brucellosis. Materials and Methods: In this experimental study, at first recombinant P39 was produced in Escherichia coli. Sera reactivity of six infected individuals against the recombinant P39 protein was analysed by Western Blot. Results: Data indicated that P39 protein from Brucella abortus was recognized by patients, sera antibodies. Conclusion: Our data showed that recombinant P39 protein can be detected as an antigen by sera in infected human. Therefore, recombinant P39 have same epitopes with natural form of this antigen.
Soleiman Zand, Hadi Hasan-Khani, Parvin Soltani,
Volume 10, Issue 1 (3-2007)
Abstract
Introduction: End stage renal disease (ESRD) is a major health problem and each year the number of patients is increasing. If the disease becomes irreversible, patients must always be hemodialyzed. Since mortality rate will increase due to inadequate dialysis, determining the efficacy of hemodialysis and improving its quality is very important. The main goal of this research is investigating the efficiency of hemodialysis. Materials and Methods: This is a cross-sectional analytical study which was conducted on 103 people who were under dialysis treatment in the Vali-e-Asr hospital of Arak in year 2003. Weight, blood pressure (before and after dialyze), time of dialysis, BUN and Cr before dialysis and 5 minutes after turning of the pump and before the second dialysis were measured. Data was analyzed by T test and Pearson correlation. Results: The mean of KT/V was 0.58 ± 0.1 normal protein catabolic rate (nPCR), 0.36 ± 0.11 g/kg per day and time average concentration of urea (TAC), 43.3 ± 14 mg/d which had a significant difference with standard measures (p<0.05). KT/V was 0.49 ± 0.18 and 0.47 ± 0.10 for men and women respectively which was significantly different (p<0.03). There was a positive and linear relationship between education level and TAC, KT/V and number of dialysis per week. Conclusion: Regarding the low efficiency of hemodialysis in 80% of patients and lower levels of hemodialysis efficacy indicators in comparison to standard measures, periodic assessment and also investigating the reasons of low efficacy of hemodialysis is recommended.
Leyla Amjad, Ahmad Amjad, Fathalah Fallahian, Sara Saadatmand,
Volume 11, Issue 2 (6-2008)
Abstract
Introduction: Pollen grains are male gametophytes of flowering plants that with self interference in fertilization have an important role in plant fertilization, increasing fertilization and improving quality of products. Pollen grains are of important allergenic plants and 80-90% of allergens have plant origin. Achillea plant has medical usage and grows in different regions of the country. This research is done in order to acquire scientific information pertaining to pollen grains allergenicity in their development stages and comparing mature and immature pollen grains allergenicity. Materials and Methods: In this experimental study Achillea plant pollen grains in different developmental stages were collected around Isfahan city and samples were studied using light and electronic microscopy (SEM). Pollen extracts were prepared by incubating pollen grains in phosphate buffered saline, PH: 7.4. The allergenicity experiment was done on male Guinea pigs (Hartley strain, 350-500g weight, 4-6 week-old, Pausteur institute of Iran) and electrophoresis of proteins was done on 12% SDS- polyacrylamide gel. Data were analyzed using one way ANOVA and Duncan test. Results: Images of light and electronic microscopy showed pollens from ellipse-spherical type, with two colpate and echinate exine. The skin tests in Guinea pigs treated with pollen extracts indicated wheal with diameter larger than control group. In clinical tests, the numbers of eosinophils, neutrophils and IgE were increased in animals treated with pollen extract comparing control group. In SDS- PAGE protein profiles, 6 richly colored protein bands were seen in mature pollens in 14.4 to 66 KD and 5 slightly colored protein bands in immature pollens in 14.4 to 45 KD. Conclusion: This research shows changes of immature pollens` ellipse morphology to spherical form in mature pollens, partial increasing in accumulation and height of exine surface echins, changes in quality and quantity of immature and mature pollen grains and difference in their allergenic severity.
Hamid Abtahi, Ali Hatef Salmanian, Sima Rafati, Ghassem Mossayebi, Ali Reza Amouzande,
Volume 14, Issue 7 (2-2012)
Abstract
Background: Brucella is a gram-negative intracellular bacterium. Since Brucella brings about health and socio-economic problems, its control is of primary importance. The common method of vaccination includes using live attenuated strains of this bacterium. This study was done to evaluate the immunogenicity of Brucella aburtus P39 gene in Balb/c mice.
Materials and Methods: In this experimental study, P39 gene was amplified by polymerase chain reaction (PCR) method and after extraction, it was sub-cloned to eukaryotic expression vector pcDNA3. The intramuscular injection of the obtained plasmid to the Balb/c mice was done in three stages. After the last vaccination, immunologic tests, such as proliferative response in lymphocytes, IFN- assessment, IL-5, and determination of IgG2a and IgG1, were run.
Results: The level of activation in splenic lymphocytes response was 3.6 and the measured IFN- was 3 ng/ml, whereas IL-5 was insignificant. IgG2a and IgG1 titers were 1.640 and 1.40, respectively.
Conclusion: The findings of the immunological analysis show the appropriate immune response in Balb/c mice model after the injection of P39 gene containing plasmid. The immune system response was in Th1 form which decreased the number of bacteria in spleen. Therefore, P39 gene is of appropriate immunogenicity and DNA vaccination is efficient in the activation of cell immune response against this bacterium.
Shaban Ali Alizadeh, Abolfazl Fatehi, Yahya Jand, Ghasem Mosayebi, Mohammad Rafiei,
Volume 15, Issue 2 (6-2012)
Abstract
Background: Several studies have demonstrated that the levels of inflammatory markers in healthy women are under the influence of menstrual cycle changes. The aim of this study was to compare blood levels of inflammatory markers in women with appendicitis in different phases of menstrual cycle. Materials and Methods: In this case-control study, 70 female and 12 male patients with appendicitis, and 61 healthy women were enrolled based on inclusion and exclusion criteria. Inflammatory markers, such as leukocyte count, CRP, ESR, and TNF-α were measured and compared using student t-test and one-way ANOVA based on different phases of menstrual cycle. Results: There were no significant changes in the ESR, CRP, and TNF-α concentrations and the number of peripheral blood leukocytes in different phases of the menstrual cycle in women with appendicitis. The mean number of leukocytes and CRP concentrations were significantly higher in patients with appendicitis compared with the control group. Conclusion: The findings show that there are not significant differences in the inflammatory markers in women with appendicitis during the different phases of menstrual cycles. It seems that day to day variation of sexual hormones in the menstrual cycle have led to very different conclusions about the change of inflammatory markers in different phases of menstrual cycle. Therefore, studies investigating inflammatory markers in women with acute appendicitis based on day of menstrual cycle, time of sampling in the day, and severity of appendicitis are suggested.
Arezo Eshghinejad, Aliasghar Farazi, Babak Eshrati, Hamid Khalili, Mana Shojapour, Aazam Ahmadi, Mohamad Arjmandzadegan,
Volume 15, Issue 5 (10-2012)
Abstract
Background: Differentiation of M. tuberculosis complex organisms were assigned to one of three genotypic groups based on the combinations of polymorphisms at katG codon 463 and gyrA codon 95. Early identification of strains belonging to any particular group is very important. This study was planned to identify major genetic groups of clinically isolated Mycobacterium tuberculosis. Materials and Methods: In this cross sectional study 33 sputum samples were collected from tuberculosis patients of the Markazi province. DNA purification from isolated samples was performed by Chelex 100. Identification of isolates was confirmed by detection of katG gene and the mutation in KatG463 by using PCR method and RFLP respectively. Finally 620-bp of katG gene and 194-bp of gyrA gene purified from PCR product were sequenced. Results: Amplification of 620-bp fragment of katG gene was a good way to confirm the detection of bacteria as a molecular approach. Results of sequencing codon GyrA95 in combination by results of PCR-RFLP determined type of the major genetic group (MGG). Therefore it showed that among the 33 Mycobacterium tuberculosis isolates 12 samples were MGG 1, 15 Samples were MGG2 and 6 samples were MGG 3. Results revealed that MGG 2 was dominant form of M. tuberculosis strains of Markazi province by frequency of 45.5%. Conclusion: Based on the results of this study MGG2 occurrence was more frequent among clinical strains in Markazi province that its accordance with susceptibility of these strains to conventional antibiotics is notable. In this study, three applicable benefits from the test as: MGG typing, molecular detection of M. tuberculosis and bacterial resistance to Isoniazid were proven.
Zatollah Asemi, Ashraf Khorrami, Mohsen Taghizadeh, Zahra Abedini, Ali Akbar Rashidi,
Volume 15, Issue 6 (11-2012)
Abstract
Background: Protein-energy malnutrition is regarded as one of the public health problems in developing countries as a result of poor feeding due to poverty. This study was conducted to compare protein quality of two samples of commercial weaning food, Cerelac (based on dry milk, wheat and banana containing probiotic Bifidobactriumlactis) and Ghoncheh (based on dry milk, wheat, and honey), in rats. Materials and Methods: This experimental study was conducted on 64 male rats aged 23 days in 8 groups under 8 diets, including 2 test diets (Cerelaccontaining probiotic Bifidobactriumlactis and Ghoncheh), 1 standard diet (casein), 1 basal diet (protein free) for true protein digestibility and apparent digestibility study, 2 test diets, 1 standard diet, and 1 basal diet for net protein ratio, protein efficiency ratio, and food efficiency ratio study. Results: The contents of true protein digestibility for casein, Cerelac, and Ghoncheh were 93.77, 84.23 and 89.82, respectively and the results were significant in all of the groups (p<0.001). The content of net protein ratio for casein, Cerelac, and Ghoncheh was 4.38, 4.1 and 3.17, respectively and the results were significantin all of the groups (p=0.009). The contents of protein efficiency ratio for casein, Cerelac, and Ghoncheh were 3.05, 2.59, and 2.01, respectively and the results were significant in all of the groups (p<0.001). Conclusion: The findings of this study indicated that the protein value of Cerelaccontaining Bifidobactriumlactis was higher than Ghoncheh.
Hamid Kazemian, Mohammad Najafi-Mosleh, Hamid Abtahi,
Volume 15, Issue 7 (12-2012)
Abstract
Background: Vibrio cholera is an important agent causing cholera in human. The expression of Flagellum and the movement of the bacterium are critical in the colonization and virulence of Vibrio cholera. FlaA gene is one the five genes encoding Flagellin which plays an important role in the activity and movement of the bacterium and its colonization which has a significant role in its immunogenicity. The aim of this study was to express and produce the recombinant FlaA protein in E.coli using Western blot method. Materials and Methods: In this experimental study, FlaA gene was proliferated by PCR method using the specific primers and cloned with BamHI and Xhol in pTz57R/T. Then it was proliferated and sequenced in DH5a vector of E.coli. The cloned FlaA gene was inserted into pGEX-4T-1 vector. The cloned vector was transformed to BL21-DE3 of E. coli and successfully expressed by induction of IPTG. The expressed protein was purified by GST affinity resin. For preparation of the primary antibody, the purified recombinant protein was injected to rats. Western blot assay method was used for determining the antigenicity of the recombinant FlaA. Results: Determination of gene sequencing showed that this gene has been proliferated properly and the antibody used in Western blot verified the production of the recombinant protein. Conclusion: The results of this study demonstrate that FlaA protein is immunogenic and can be evaluated in vaccine designing and as a diagnostic tool for detection of cholera infection.
Ali Zarei, Mehrdad Shariati, Shahnaz Shekar Forosh , Saeid Ashtiyani, Fateme Rasekh,
Volume 15, Issue 7 (12-2012)
Abstract
Background:Noticing the side effects associated with chemical drugs, using natural medicinal plants has gained more prominence recently. Physalis alkekengi extract is a medicinal plant belonging to Solanaceae family which similar to most drugs used in traditional medicine, despite possessing a multitude of medicinal properties, has not received sufficient attention. The aim of the present study was to briefly review the effects of Physalis alkekengi extract on the concentration of thyroid hormones, blood cholesterol, some plasma biochemical factors, liver function, immune system, and sexual hormones. Due to the extensive usage of Physalis alkekengi extract in traditional medicine, determining its advantages and possible side effects is of great physiologic and pharmacologic significance. Physalis alkekengi extract due to the presence of such effective substances as alkaloids, lycopene, glucocorticoids, alcoholic agents, and a large amount of vitamin C as well as antioxidant properties can play a significant role in changes in body homeostasis. This study dealt with the function and effect of Physalis alkekengi extract on different body organs through using proper keywords and extensive online search through electronic databases and credible sources. The results of this mini-review showed that Physalis alkekengi extract can bring about various significant changes in different body organs that have not been properly recognized. Therefore, further and more extensive studies should be done on this plant.
Rohollah Dorostkar, Taravat Bamdad, Esmail Saberfar,
Volume 15, Issue 10 (3-2013)
Abstract
Background: The importance of VP2 protein of canine parvovirus to bind to human cancer cells and to detect the virus in veterinary detection kits has motivated a lot of research on the production of this protein. In this project, a surface gene of canine parvovirus (VP2) was cloned and expressed in a prokaryotic vector system and its expression was optimized in a specific cell-free prokaryotic expression system. Materials and Methods: In this experimental study, plasmid pET-21aVP2 was constructed by cloning the PCR product of VP2 gene of canine parvovirus into the plasmid expression pET-21a vector. The best sequence was analyzed through PCR and it was followed by confirmation with sequencing and restriction digestion. To produce VP2 protein, plasmid pET-21aVP2 was transferred into Escherichia coli, Rosetta (DE3) strain, and the expression of this protein was induced by IPTG. The production of VP2 protein in both systems was evaluated using SDS PAGE technique. The expressed protein was checked with monoclonal antibody against VP2 protein by Western blotting technique. Results: Successful cloning of VP2 protein was confirmed by enzymatic digestion and sequencing. The expression of VP2 protein in bacterial and cell-free prokaryotic systems was verified by SDS PAGE and the specific band in Western blotting also confirmed the VP2 protein. Conclusion: The results of this study showed that VP2 gene was amplified in the cloning phases and it was successfully cloned in the expression vector. Protein expression was confirmed in both bacterial and cell-free prokaryotic systems.
Leila Hasanzadeh, Hamid Abtahi, Ehsanollah Ghaznavi-Rad , Safieh Soufian , Vahideh Farjadi ,
Volume 16, Issue 1 (4-2013)
Abstract
Background: Helicobacter pylori is the most common bacteria causing chronic infections worldwide. An important virulence factor of H. pylori is a vacuolating cytotoxin (VacA) that induces the formation of acidic vacuoles in cytoplasm and damage to epithelial cells. The aim of this study was to examine the antigenic properties of the recombinant VacA of H. pylori in infected sera of mice and human.
Materials and Methods: In this experimental study, the highly antigenic region of VacA gene (1233 bp) was detected by bioinformatics methods, and it was amplified by PCR method and cloned into the pET32a expression vector. After expression and purification of the target protein, its antigenicity was studied by Western Blotting using human sera infected with H. pylori and sera from immunized mice infected with purified recombinant VacA.
Results: PCR and sequencing results showed that the target gene was correctly cloned into the recombinant vector. Antibodies used in Western Blotting indicated the production and expression of the recombinant protein (65kDa) with concentration of 2.1 mg/ml.
Conclusion: Recombinant VacA protein has antigenic and immunogenic properties thus, it is a proper candidate for designing H. pylori vaccine and diagnostic kits
Karon Shah Ebrahimi, Azam Sharifi, Afshin Almasi, Ronak Taliei, Babak Izadi , Mohammad Karimi,
Volume 16, Issue 4 (7-2013)
Abstract
Background: Subclinical hypothyroidism is the compensatory stage before overt hypothyroidism. In overt hypothyroidism, risk of ischemic heart disease increases due to elevation of lipoprotein (a) as atherogenic agent, but evidence for subclinical hypothyroidism is one of the controversial issues in researches. According to the atherogenic lipoprotein (a) and other serum lipids, this study is conducted to compare the serum lipoprotein (a) and other serum lipids in patients with subclinical hypothyroidism and euthyroidism.
Materials and Methods: In this descriptive - analytic study, 90 persons (60 with subclinical hypothyroidism and 30 euthyroid state) are participated and these referred to Imam Reza and Taleghani Hospitals which are located in Kermanshah. The sampling method is selected with available sampling methods. After differentiating data by age, sex and underlying disease (liver, kidney, drugs), then they were subjected to determination lipoprotein (a) and other serum lipids profile tests.
Results: In both cases and controls, 16/7% were men and 83/3% were women. Based on results, there is no significant difference between serum lipoprotein (a), triglycerides, cholesterol, HDL and LDL in both statistical groups (p>0.05). Also there is no association between lipoprotein (a) and other serum lipids (p>0.05).
Conclusion: Serum levels of lipoprotein (a) and other serum lipids in young patients with normal weight with subclinical hypothyroidism is not increase, thus it can be concluded early treatment is not necessary for them.
Ali Khajehlandi, Hosein Jafarei, Amin Mohammadi Demieh, Parvin Barzideh,
Volume 16, Issue 5 (8-2013)
Abstract
Background: Heat shock proteins (HSP) are from proteins family playing crucial role in maintaining cellular hemostats and protecting cells in an acute and chronic stressful conditions. The object of this study is to investigate the alternation of heat shock proteins (HSP70) levels after Wingate and Strand tests in female students.
Materials and Methods: In this semi- experimental study, 40 female (20 athletics and 20 non-athletics) with the mean age 22.3±3 & 23.2±2, Height 159.2±5 & 161.2±4 cm and mean weight of 59.3±3 & 65.4±2 kg (respectively) were selected randomly and underwent training protocols of Wingate and Strand tests with 3 days intervals. 5 cc brachial vein blood samples were taken immediately before and after performing tests in order to analyze the data using repeated measure method.
Results: The findings showed significant increase after aerobic Strand test between athletics and non-athletics Female (p<0.01). But, after aerobic Wingate test, a significant increased was observed only in Athletes' group (p>0.05). But there was an insignificant reduction in non-athlete group.
Conclusion: The results showed that exercise duration is more important than exercise intensity in HSP70 production.
Keyhan Ghatreh Samani, Effat Farrokhi, Morteza Hashemzadeh, Esfandyar Heidarian,
Volume 16, Issue 5 (8-2013)
Abstract
Background: Paraoxonase1 activity shows decline in patients with coronary artery disease. The C to T change in the -107 position of promoter is the most important genetic determinant of serum levels of paraoxonase 1. Study of this polymorphism and its relationship with the type of fatty acid composition of phospholipids in HDL particles can be found in the common pursuit of better medicines and considered in drug treatment.
Materials and Methods: In this descriptive study 265 Patients were selected and divided in two groups based on LDL level (131 in case and 134 in control). Information of subjects were collected from questionnaire and the results of biochemistry and molecular tests. Fatty acids of HDL phospholipids were measured with Gas chromatography technic .
Results: PON1aryl esterase activity, had no significant changes after treatment with lovastatin but paraoxonase activity had more significant increases in the CC genitype of -C/T107 polymorphism. Percent of oleic acid, linoleic acid and icosapentanioc acid in HDL phospholipids were increased by lovastatin.
Conclusion: Treatment with lovastatin in the CC genotype is probably more protective effect against cardiovascular disease. Following treatment, in patients with higher paraoxanase 1 activity Oleic acid and linoleic acid have also increased in HDL phospholipids.
Navi Reza Mashaykhi, Saeid Sadrneya, Ali Chehrei, Javad Javaheri, Mojtaba Ahmadlou,
Volume 16, Issue 6 (9-2013)
Abstract
Background: Traditionally levels of cholesterol and triglyceride are used to identify individuals at risk of coronary artery disease (CAD). The aim of this study is examining the association of ApoA1 and ApoB with severity of coronary artery disease and whether these parameters are better predictor of CAD.
Materials and methods: This is a cross- sectional study. All patients that referred to ARAK amirallmomenin hospital and enrolled for coronary angiography was entered to study. Before angiography and after gathering informed consent, levels of apoA1 apoB, cholesterol, TG, LDL, VLDL, HDL and FBS were measured. The results of coronary angiography were reviewed by two experienced cardiologist separately. Severity of coronary artery disease involvement was determined by Gensini score (GS), the data were analyzed with statistical methods by SPSS software.
Results: There is a statistically significant correlation Between apoB and GS (r=0.127, p=0.047). Logistic regression model showed that among predictors for CAD entered model eg gender, age, cholesterol, TG, HDL, LDL , VLDL, ApoA1, ApoB and ApoB/Apo- A1 ratio, only ApoB and gender were proper predictors of coronary artery Disease( CAD) (p=0.002, , p=0.001). In comparison with angiography for diagnosis of CAD, ROC analysis represent that using ApoB can be useful test (p=0.047).
Conclusion: According to result of this study, using ApoB in addition to conventional parameters for assessing the patient at risk to having CAD would be reasonable and could be an independent risk factor for CAD.
Naz Afarin Jokar, Farhad Daryanoosh, Hosein Jafari, Somayeh Kasharafifard, Ali Askarzadeh,
Volume 16, Issue 6 (9-2013)
Abstract
Background: The purpose of the present study was to investigate the probable changes of HSP70 , liver enzymes & Cpk in professional athletes after a training season and participating in skating open world championship.
Materials and Methods: 10 elite female skaters were chosen. Eccentric exercise test were performed in three sections (24 hours before the beginning of the training, after six months of training (before participating in Skating World Championship) and 24 hours after the end of world championship). The training program consisted of 26 weeks of training, performed 5 times a week encompassing specialized skate trainings. Blood samples were taken before and after each eccentric exercise test.
Results: there was no significant change, in HSP70 concentration in response to eccentric exercise test, in pre exercise period (p>0.898). But, it illustrated a significant increase in after eccentric exercise test, in post exercise period (p<0.031). Moreover, in measuring down, it showed a significant increased in the amount of liver enzymes and Cpk after eccentric exercise test in second and third step compared to first step (p<0.05).
Conclusion: the results of the study illustrated that improving an athlete's physical fitness level during training season and matches leads to a significant increase in the protective level of the body (via the production of HSP70), depending also on the ability of the body of the individual in producing that protein. It can also be stated probably individual body fitness level, is an important factor in determining ALT, AST, ALP levels after performing eccentric exercise.
Navid Mazruei Arani, Homa Baghaei, Ashraf Khorrami Rad, Zatollah Asemi, Sabiheosadat Alizadeh, Ahmad Esmaeilzadeh,
Volume 16, Issue 6 (9-2013)
Abstract
Background: Increased insulin resistance, inflammatory factors and parameters of oxidative stress are associated with the development of diabetes complications. This study was designed to determine the beneficial effects of synbiotic Gaz on insulin resistance, inflammatory factor and oxidative stress in patients with type 2 diabetes.
Materials and Methods: This randomized crossover double-blinded controlled clinical trial was performed among 62 diabetic patients aged 35-70 y. Subjects were randomly assigned to consume of either the synbiotic (n=62) or control Gaz (n=62) for 6 weeks. A 3-week washout period considered. The synbiotic Gaz was consisted of a probiotic viable and heat-resistance strain Lactobacillus sporogenes (1×107 CFU), 0.04 g inulin and 0.05 g stevia per 1 g as sweeteners' substances. Control Gaz (the same substance without probiotic bacteria and prebiotic inulin) was. Patients were received synbiotic and control foods in a 7 g package thrice a day. Fasting blood samples were taken at baseline and after 6-week intervention to measure insulin resistance, hs-CRP and biomarkers of oxidative stress.
Results: Consumption of synbiotic Gaz, compared with control, resulted in a significant decrease in serum insulin (p=0.02) and hs-CRP levels (p=0.008). Supplementation with synbiotic Gaz led also to a significant increase in plasma total glutathione (p<0.0001) compared to the control.
Conclusion: In conclusion, consumption of synbiotic Gaz for 6 weeks resulted in decreased levels of serum insulin, hs-CRP and increased levels of plasma total glutathione.
Vahideh Farjadi , Hamid Abtahi, Mohammad Reza Zolfaghari, Safieh Soufian, Leila Hasanzadeh,
Volume 16, Issue 7 (10-2013)
Abstract
Background: Helicobacter pylori (H. pylori) is a gram negative bacilli that causes the stomach and duodenum diseases in human. An important virulence factor of H. pylori is a CagA gene that increases of colonization it in stomach epithelial cells and lead to inflammation and peptic ulcers. The aim of the present study was to production of recombinant protein containing highly antigenic region of CagA in E. coli.
Materials and Methods: In this experimental study, the antigenic region (1245 base pair) of CagA gene was detected by bioinformatics methods, proliferated by PCR method, digested by BamHI and XhoI restriction enzymes and cloned into pET32a plasmid and was expressed in the E. coli BL21 (DE3) pLysS with induced by IPTG. The expressed protein was purified with Ni-NTA kit and its antigenicity was studied by western blotting method.
Results: Data showed the successful cloning and expression of the target gene. Recombinant CagA protein purified by Ni-NTA kit and dialysis with concentration of 1.5 mg/ml. In western blotting, the produced protein was interacted with infected human and mice sera.
Conclusion: Results indicated that recombinant CagA protein (65 KDa) maintains its antigenicity, so could be used for serological diagnosis of H. pylori diseases and production of vaccine.
Pouran Karimi, Roshanak Bayat Makou, Parvin Dehghan, Mohamad Reza Salimi Movahed,
Volume 17, Issue 1 (4-2014)
Abstract
Background: Selenium is a unique trace element which is benefit on inflammatory underlining diseases. MAPK (Mitogen-activated protein kinase) pathways regulate several cellular functions including inflammation, cell differentiation, migration, and apoptosis. Objective: This study aimed to find out the pathway(s) by which Selenium modifies inflammatory events in oxidative or thrombotic induced stress in platelet.
Materials and Methods: This is a basic -experimental study on Human platelets obtained from 30 healthy individuals (age 35±12) .The phosphorylation rate of P38MAPK , c –JNK (c-Jun N-terminal Kinase), and ERK1/2(Extracellular signal-regulated kinases1/2) as three important proteins in MAPK family and P-selectin were measured in presence or absence of selenium by ELISA( solid phase sandwich Enzyme Linked-ImmunoSorbent Assay). Pharmacological inhibition is done by inhibitors of P38MAPK, ERK1/2 and c- JNK in order to compare with selenium effects. The percentage of ratio of phosphorylated to total protein was used for normalizing the phospho protein contents of platelets.
Results: Selenium significantly reduced P-selectin expression (p<0.05), P38MAPK (p<0.05) and c- JNK phosphorylation (p<0.05) induced by cu2+oxidized LDL in platelets but Se couldn’t significantly reduce Thrombin induced P-selectin despite of decreasing in mentioned phospho-proeins.
Conclusion: Our results indicated that Selenium can reduce inflammation via suppression of p38MAPK-dependent signaling pathway. These results may provide insights related to development of novel Selenium therapies in atherosclerosis.