Showing 11 results for Farahmand
F Farahmand, K Shiasi Arani,
Volume 59, Issue 6 (11-2001)
Abstract
Chronic Liver diseases in children is the result of many different diseases including: metabolic, genetic, infectious, toxic and idiopathic causes. This was a case series study on 133 infants and children with age range 6 month to 12 years old, who presented clinically with manifestation of chronic liver disease and were admitted to Children Hospital Medical Center from year 1999 to 2000. In this study, 32 (24.5 percent) patients had autoimmune chronic hepatitis, 15 (11.3 percent) Glycogen storage diseases, 12 (9 percent) extrahepatic biliary atresia, 11 (8.2 percent) willson disease, 10 (7.5 percent) cryptogenic cirrhosis, 6 (4.5 percent) chronic hepatitis C, 5 (3.8 percen) chronic hepatitic B, 5 (3.8 percent) galactosemia 3 (2.25 percent) congenital hepatic fibrosis, 3 (3.8 percent) histiocytosis X, 3 (2.25 percent) sclerosing cholangitis, 2 (1.5 percent) byler’s disease 2 (1.5 percent) primary tuberculosis, 1 (0.75 percent) choledocalcyst, 1 (0.75 percent) Alagyle syndrome. According to our data, chronic liver disease should be considered in infants and children. In our study, the most common causes are found to be: metabolic and genetic diseases (37.5 percent), chronic autoimmune hepatitis (24 percent) and biliary disorders (14 percent), that encompass 86 percent of the patients.
Mahjoub F, Farahmand F, Molavi S,
Volume 64, Issue 8 (13 2006)
Abstract
Background: Celiac is one the most common causes of malabsorption and is an autoimmune disorder resulting in damage to intestinal epithelial cells by self T lymphocytes. The main culprit is gluten. The aim of our study was to assess the histopathologic findings of patients suspicious to have celiac disease in their first admission and compare them with serologic findings (endomyosial antibody test: EMA).
Methods: The study is a prospective descriptional type and 95 patients suspicious to have celiac disease were included who went under upper endoscopy and sampling and also serologic studies. Histopathologic findings were grouped by Marsh classification. Specimens in Marsh stage 0 and 1 were also stained for leukocyte common antigen by immunohistochemistry
Results: Ninety five patients, 49 males and 46 females, ranging from 9 months to 17 years (mean: 6.3 ys) were included in the study The most common complaint was abdominal pain. EMA test was positive in 43 patients. Most specimens were categorized as Marsh stage IIIA (51 cases) by histopatholgic examination, which can be seen in many other conditions. Only 16 patients were categorized as Marsh stage IIIB & IIIC, which are seen in established celiac patients No significant correlation was found between histopathologic and serologic findings. No difference was found between H&E staining and immunohistochemical staining in counting of intra- epithelial lymphocytes.
Conclusion: Most of our patients had mild partial villous atrophy which is also seen in many other disorders and also EMA test was negative in this group. It appears that current assessment of celiac disease has many drawbacks and necessity of more specific methods is highly appreciated.
Farahmand F, Khatami Gh, Mehrabi V.a, Mahjoob F, Ezadyar M, Mehdizadeh M,
Volume 65, Issue 2 (8 2008)
Abstract
Background: The aim of this study was to review the frequency, histopathology and outcome in children with tumors of the liver.
Methods: Included in this retrospective/descriptive study were 30 children treated for liver tumors from 1375-1384 (ca. 1996-2005), at Children’s Hospital Medical Center, Tehran, Iran. We included the clinical, radiologic, and pathologic data of our patients, focusing on the frequency, etiology and outcome.
Results: Patient ages ranged from three months to 12 years (median 3.8 years), with 18 males (60%) and 12 females (40%). Of these, 17 patients had hepatoblastoma (55.66%), including 13 males and four females, with an age range of six months to five years. Four cases (13.33%) had neuroblastoma. Hepatocellular carcinoma (HCC) was found in three cases (10%), all of whom were carriers of hepatitis B. Two cases (6.66%) were diagnosed with mesenchymal hamartoma, two cases (6.66%) with hemangioendothelioma and two cases (6.66%) with rhabdomyosarcoma and leiomyosarcoma of the biliary tract. Abdominal swelling and hepatomegaly were seen in all of patients. Jaundice was observed in two cases. Serum alpha-fetoprotein levels greater than 500 ng/ml were seen in 17 cases (56.66%). All patients were receiving specific treatment. The three-year survival rate was 65% for hepatoblastoma and 2% for HCC
Conclusion: With the introduction of specific treatment, the survival rate for children with tumors of the liver has significantly increased. Further improvement can be achieved using diagnostic biopsy for hepatoblastoma, although it may result in complications, and preoperative chemotherapy followed by complete surgical excision (per International Society of Pediatric Oncology guidelines), yielding an outstanding survival rate of 80%.
Fallahi Gh, Farahmand F, Nematkhorasani E,
Volume 65, Issue 4 (3 2007)
Abstract
Background: Neonatal cholestasis is an important disease of the liver and biliary ducts in infancy. In neglected cases, the disease has irreversible complications. Idiopathic neonatal hepatitis, biliary atresia, TORCH infections and choledochal cyst are important causes of neonatal cholestasis. The aim of this study was to determine the causes of cholestasis among neonates admitted to the Children’s Medical Center of Tehran University.
Methods: This is a descriptive, retrospective study including 109 patients diagnosed with obstructive icterus, from 1994 to 2001. With data collected from hospital records, the inclusion criteria consisted of cholestasis with a conjugated bilirubin of up to 2 mg/dl from at least two laboratory samples (20% of total bilirubin). The definitive diagnosis of cholestasis included the laboratory investigations, which were in the patients’ hospital records and documented by their physicians.
Results: Our patients (63 males and 46 females) had a mean age of 40±6 days. The most common clinical findings were icterus, acholic stool and hepatosplenomegaly. The most common cause of cholestasis was idiopathic neonatal hepatitis followed by biliary atresia, which together caused 75% of all the cases in this study.
Conclusions: In our general population, the most common causes of neonatal cholestasis are hepatitis and biliary atresia. In other investigations, the etiology of neonatal cholestasis was different than that of this study. Because the number of different disorders presenting with cholestasis may be greater during the neonatal stage than at any other time of life, early diagnosis and treatment is very important for improved prognosis.
Somayeh Zamani, Fatemeh Fotouhi Chahouki, Zahra Nourmohammadi , Saeideh Sadeghi Neshat, Vahideh Mazaheri , Ali Torabi , Behrokh Farahmand ,
Volume 73, Issue 7 (October 2015)
Abstract
Background: The influenza virus is one of the most important factors for higher morbidity and mortality in the world. Recently, researchers have been focused on influenza conserved antigenic proteins such as hemagglutinin stalk domain (HA2) for vaccine production and serological studies. The HA2 plays a major role in the fusion of the virus with host cells membrane. The immunity system enables to produce antibody against HA2. The aim of this study is polyclonal antibody production against influenza HA2. Methods: This study was done in the Influenza Research Lab, Pasteur Institute of Iran, Tehran for one year from September 2013 to October 2014. In the present study, recombinant HA2 protein was produced in prokaryotic system and purified using Nickel affinity chromatography. The purified HA2 was mixed with Freund’s adjuvant (complete and incomplete) and injected into two New Zealand white rabbits by intramuscularly and subcutaneously routes. Immunization was continued for several months with two weeks interval. Before each immunization, blood was drawn by venous puncture from the rabbit ear. Function of rabbit's sera was evaluated using radial immunodiffusion (RID) in both forms, Single RID (SRID) and Double RID (DRID). Finally, antiserum activity against HA2 was evaluated using western blotting as serological assay. Results: Sedimentary line and zone was observed in RID assays (SRID and DRID) represent interaction between HA2 protein and anti- HA2 antibody. As well as, western blotting results was positive for HA2 protein. Therefore, these results showed that polyclonal antibody produced against HA2 protein can identify HA2 protein antigenic sites. Conclusion: These findings show that humoral immune responses have properly been stimulated in rabbits and these antibodies can identify HA2 protein and may be suitable for other serological methods.
Rezvan Esmaeili , Tannaz Samadi , Nasrin Abdoli , Keivan Majidzadeh-Ardebili , Leila Farahmand , Malihe Salehi ,
Volume 74, Issue 10 (January 2017)
Abstract
Background: Researchers are always trying to find specific markers which express specifically in cancer. These specific markers help to diagnose and treat cancer without affecting normal tissues. Cancer-testis antigens are among the new promising biomarkers, especially for targeted therapy. These markers are specially expressed in testis. Various studies have been reported individual expression of these proteins in some tumor tissues. Since testis is an immune privilege organ, abnormal expression of the above mentioned genes raises immune response and the serum antibody against them (CT antigene) can be detected as a marker of cancer. However, understanding their differential role in normal and cancer tissues may introduce them as new candidates of cancer biomarkers. The aim of this study was to evaluate AKAP3 gene expression in breast cancer and its correlation with clinicopathologic features of the disease.
Methods: This study is a case-control study conducted at the Brest Cancer Research Center (BCRC)- Iran, between October 2014 to May 2016. AKAP3 gene expression was investigated with real-time PCR in breast samples including: 74 tumors, 73 normal adjacents and 15 normal tissues. On the other hand the correlation between gene expression, clinicopathologic features of the tumors and treatment regimen were evaluated.
Results: Statistical analysis showed a significant correlation between lack of AKAP3 expression, tumor size (P=0.01) and stage (P=0.04). The association between poor prognosis and the absence of AKAP3 expression in normal adjacent tissues were observed. Kaplan Meier plot showed a significant better disease free survival in the normal adjacent patients group that are expressed AKAP3.
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Conclusion: It was observed that the better free survival in the normal adjacent group is because of the different AKAP3 expression, not treatment variations between two patient groups. As a result, AKAP3 can be a suitable candidate biomarker for breast cancer patients. Also, the study of gene expression in normal tissue of patients may be used to predict response to therapy.
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Farid Suleimani Mohammadi , Abbas Rahimi Foroushani , Mohsen Rokni , Mohammad Farahmand , Kazem Ahmadi Kia , Azadeh Shadab , Hamidreza Ahmadkhaniha, Jila Yavarian ,
Volume 74, Issue 11 (February 2017)
Abstract
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Background: Schizophrenia (SC) and bipolar disorder (BD) are two chronic psychiatric illnesses with worldwide distribution. People could be involved at any age, particularly in early adolescence. Main symptoms of SC are non- affective symptoms such as auditory hallucination and illogical thinking. In contrast, BD represents affective symptoms such as depression and mania. Although the main cause of these mood disorders has been remained elusive, there are some potential contributing factors that could be considered in the pathogenesis of mentioned illnesses including, genetic and environmental factors. Cytomegalovirus (CMV) is one of the probable contributing factors in SC and BD. CMV is a prototype of herpesviridae family which may infect different cell types such as endothelial and differentiated hematopoietic cells. CMV infections in immunocompromised patients as well as congenitally infected children represent CNS complication such as microcephaly and hearing loss. This virus has capability to impair the limbic structures in brain.
Methods: This descriptive study was designed to evaluate the role of CMV in these illnesses. We investigated the level of serum IgG antibody and the presence of CMV DNA in serum and peripheral blood mononuclear cells (PBMCs) samples of 46 SC and BD patients admitted to Iran Psychiatry Hospital Tehran, Iran from 2014 to 2015 as well as 46 healthy control groups at Tehran University of Medical Sciences. First, the level of CMV IgG antibody was evaluated in serum samples, by enzyme-linked immunosorbent assay (ELISA). Then, DNA extraction conducted by using the high pure viral nucleic acid kit (Roche, Germany). Serologically positive sera along with PBMC samples were tested by Real-time PCR, to investigate the presence of CMV DNA.
Results: Results indicated higher levels of CMV IgG antibody in psychiatric patients, compared with a healthy control group. Afterward, we did not observe the presence of CMV DNA in either case or control groups.
Conclusion: According to the CNS impairment mediated by CMV infection, this virus has been supposed to play an important role in pathogenesis of mental disorders such as SC and BD. We suggest further investigation to be conducted, particularly on other samples such as cerebrospinal fluid.
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Fateme Khosravi Node , Farida Behzadian , Vahideh Mazaheri , Hadiseh Shokouhi , Maryam Saleh , Behrokh Farahmand ,
Volume 75, Issue 8 (November 2017)
Abstract
Background: Each year, Human influenza A (H1N1) virus causes moderate to severe infections with a high prevalence throughout the world. Accordingly, the rapid, sensitive and cost-effective laboratory diagnosis based on viral antigen detection is important. Moreover, the generation of specific antibodies directed against Influenza antigens is essential to the success of both basic and applied research programs. Hemagglutinin (HA) is the major surface envelope glycoprotein of influenza virus, which is subsequently cleaved into two subunits, HA1 and HA2. Since most antigenic sites are in the HA1 domain of HA, HA1 domain of influenza virus was studied as antigen to produce polyclonal antibody.
Methods: In this experimental study we expressed and purified the recombinant HA1 protein in the second half of 2015 at department of influenza and other respiratory viruses, Pasteur Institute of Iran and then prepared the polyclonal rabbit antibody against it. The vector of pET28aHA1 expressing HA1-His tagged protein of H1N1 influenza A/PR/8/34 virus was used for large scale production of HA1 into E. Coli (BL21). By changing expression conditions such as IPTG (Isopropyl β-D-1-thiogalactopyranoside) concentration, time and temperature of incubation, the expression conditions for HA1 were optimized. The total cell protein harvested and purified by nickel affinity chromatography. All above mentioned experiments monitored by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE).
Results: The efficiency of HA1 recombinant protein was high, equal to 400-600 mg/ml of cell lysate. The polyclonal antibody was prepared by immunizing the rabbits using recombinant HA1 with Freund’s adjuvant according to standard protocols. Efficiency of the antiserum evaluated by enzyme linked immunosorbent assay (ELISA). Determination of antibody level in the collected antiserum using serum-based ELISA showed that the specific antibody has risen well through the immunization schedule.
Conclusion: Our data shows that this polyclonal antibody has potential to be produced in rabbit. It will also be used in the future in influenza diagnosis as well as in other immunological applications such as western blot analyses, immunocytochemistry, and immunohistochemistry.
Fateme Arbabi-Kalati , Mohammad-Mahdi Farahmand ,
Volume 75, Issue 9 (December 2017)
Abstract
Background: Lichen planus is an inflammatory mucocutaneous disease which involves 0.2‒4% of the population and has an unknown etiology. There is no definite treatment for the disease and current treatment modalities are palliative in nature. Although the exact cause of lichen planus is not clear, some scientists believe that free radicals and oxidative stress might have a role in causing this condition. The current study was conducted to assess the therapeutic effect of lycopene in treating erosive and atrophic oral lichen planus.
Methods: Thirty patients whose disease was confirmed by a pathologist were included in the clinical trial from January to July 2016 in the Department of Oral Medicine, Faculty of Dentistry, Zahedan University of Medical Sciences. The patients were randomly divided into two groups. The first group was treated with topical corticosteroid and 15 mg of systemic lycopene daily for a month and the second group received only topical corticosteroids. We recommended that the patients use the drugs (topical corticosteroids) four times a day, avoiding taking food for one hour after applying the drugs. Pain severity was recorded by numeric rating scale before and after the treatment and disease score was recorded by Thongprasom scale before and after treatment. Data were analyzed with SPSS 18. Mann-Whitney U test was used to compare the groups.
Results: In the case and control groups, pain scores before treatment were 5.4±1.2 and 5.7±0.9, with 3.01±1.8 and 3.2±1.5 after treatment, respectively. There was no significant difference between the two groups (P= 0.6, P= 0.4). Disease scores before treatment were 4.1±1 and 4±0.8, with 1.7±1.2 and 1.8±1.5 after treatment, respectively. There was no significant difference between the groups (P= 0.7, P= 0.8).
Conclusion: In this study the use of systemic lycopene did not increase the effect of topical corticosteroid; in addition, the results showed that the systemic use of 15 mg of lycopene in addition to topical corticosteroid treatment had no significant effect on patients’ pain and disease scores in comparison to topical corticosteroids.
Sadegh Norouzi , Fateme Esfandiarpour , Ali Shakouri Rad , Nasim Kiani Yousefzadeh , Zeinab Helalat , Reza Salehi , Mehrnoosh Amin , Farzam Farahmand ,
Volume 77, Issue 8 (November 2019)
Abstract
Background: The amount of anterior tibial translation during rehabilitation exercises is a key factor in organizing exercise regimen after anterior cruciate ligament injury. Excessive anterior tibial translation could increase the magnitude of tension imposed on injured and reconstructed anterior cruciate ligament knees. Forward lunge and open-kinetic knee extension exercises are commonly used in anterior cruciate ligament rehabilitation. However, there is insufficient data about the amount of anterior tibial translation in the eccentric and concentric phases of these exercises. This study compared the amount of anterior tibial translation in the eccentric and concentric phase of the lunge and seated knee extension in anterior cruciate ligament deficient and intact knees.
Methods: Using a non-probability sampling method, 14 men with unilateral anterior cruciate ligament rupture were selected for participation in this cross-sectional study. Participants were recruited from the university’s physiotherapy clinics. A uni-plane fluoroscope was used to image the knee joint while participants performed the forward lunge and open-kinetic knee extension exercises with the intact and injured legs in random order. Fluoroscopy imaging was performed in the radiology center at Sina Hospital, Tehran, Iran, from September 2013 to February 2014. Two factorial mixed ANOVA was used to analyze the data.
Results: There were no significant differences in the anterior tibial translation between the limbs and contraction phases during the lunge exercise. During open-kinetic knee extension, the anterior tibial translation in anterior cruciate ligament deficient knees was significantly more than that of healthy knees at 0⁰ (P=0.007). The anterior tibial translation in the eccentric phase of open-kinetic knee extension at flexion angles of 0⁰ (P=0.049) and 15⁰ (P=0.024) was significantly greater than that in the concentric phase.
Conclusion: In the lunge exercise, the amount of anterior tibial translation was similar between the eccentric and concentric phases and the intact and anterior cruciate ligament deficient knees, however, during open-kinetic knee extension exercise, in the eccentric phase was greater than that in concentric, and in the intact knees was greater than that in the intact knees, at 0-15⁰ angles.
Ali Torabi, Behrokh Farahmand, Mohammadreza Zolfaghari , Fatemeh Fotouhi, Mohsen Zargar,
Volume 79, Issue 11 (February 2022)
Abstract
Background: Influenza vaccines based on conserved proteins are being developed persistently. The conserved protein vaccines based on Nucleoprotein (NP) are highly protected vaccines against influenza viruses that can be used as a Universal vaccine. Aluminum hydroxide (Alum) is the most common adjuvant used in vaccine formulation to improve immunization by altering the epitopes’ folds. However, due to its toxic effects on the nervous system, especially in infants and young children exposed to multiple vaccine injections during brain development, it is better to use more desirable options such as carbohydrate-based adjuvants. Sucrose ester (SE) is a carbohydrate and non-ionic surfactant that is compatible with the human body and environmentally friendly. This study evaluated the immunogenicity of recombinant NP molecule prepared in a prokaryotic with the accompaniment of sucrose ester adjuvant against lethal influenza virus challenge in a Balb/c mice model.
Methods: The recombinant vector of PET-28a-NP was used to produce NP molecule. The vaccines containing an NP with or without Alum or sucrose ester adjuvants were injected into the mice. The Effectiveness and immunogenicity were examined by evaluating the humeral immunity induction by Immunoglobulin G (IgG), and its subunits production, and cellular immunity induction by Interferon-Gamma (IFN-γ) and Interleukin-4 (IL-4) production by ELISA Method and also animal’s
surveillance was documented. The study took part at the Influenza and other respiratory viruses department of Pasteur institute of Iran in November 2018.
Results: The animals’ surveillance in the Np group was 57.1%, NP+SE was (71.4%), and NP+SE was 64.28%. Also, IgG and its subunits, IL4, and IFN-γ production in both Alum and SE combined vaccines compared to NP alone were significant.
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Conclusion: In combination with the carbohydrate adjuvant containing sucrose ester compared to the formulation with alum adjuvant, the NP could provide proper and considerable protection and immunity against the homologous strain (H1N1) of the Influenza A virus. It is recommended that SE usage as an adjuvant results in an adequate immune response and less toxic effect.
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