Publications by authors named "Vossough P"

Background: Little is known about childhood ALL in the Middle East. This study was undertaken by MECCA as initial efforts in collaborative data collection to provide clinical and demographic information on children with ALL in the Middle East.

Procedure: Clinical and laboratory data for patients with ALL between January 2008 and April 2012 were prospectively collected from institutions in 14 Middle East countries and entered into a custom-built-database during induction phase.

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Background: Cancer in infants younger than one year of age represents a unique problem with distinct epidemiological, clinical and genetic characteristics compared with older age groups. No report is yet available from Iran regarding epidemiological and survival rate of cancers diagnosed in this age group.

Materials And Methods: The population under study comprised of patients which were diagnosed and admitted to Ali-Asghar hospital between years 1996-2005.

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Purpose: As central nervous system (CNS) tumors account for second most common childhood malignancies and the first cause of mortality in children with cancer, improving treatment modalities can lead to increase the health care of patients. In this study, we examined the prevalence of childhood brain tumors in patients who referred to MAHAK's Pediatric Cancer Treatment and Research Center (MPCTRC) for treatment.

Methods: A retrospective review of all children less than 15 years old with a CNS histologically proven tumor, who presented to MPCTRC from April 2007 to April 2010, was performed.

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Objective: To measure the parental attitudes toward fertility preservation in boys with cancer.

Design: Retrospective cohort study.

Setting: Questionnaire survey via regular mail.

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Background: Childhood primary central nervous system (CNS) malignancies are one of the most important concerns in pediatric oncology.

Material: In this historical cohort, 82 patients treated in Ali-Asghar Children's Hospital between 1996 and 2005 were evaluated for age, gender, type of treatment, tumor pathology, and survival.

Results: The records of 38 female (46.

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Acute promyelocytic leukemia (APL) is characterized by specific t(15;17), distinct morphologic picture, and clinical coagulopathy that contribute to the morbidity and mortality of the disease. This study aims to investigate the effects of antitelomerase compound BIBR1532 on APL cells (NB4). BIBR 1532 exerts a direct short-term growth suppressive effect in a concentration-dependent manner probably through downregulation of c-Myc and hTERT expression.

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It has recently been shown that ROR1, a member of the receptor tyrosine kinase family, is overexpressed in leukemic B cells of Chronic Lymphocytic Leukemia (CLL) and a subset of Acute Lymphoblastic Leukemia (ALL). In this comparative study the expression profile of ROR1 mRNA was investigated in Iranian patients with CLL and Acute Myelogenous Leukemia (AML) and the results were compared with those previously reported in our Iranian ALL patients. RT-PCR was performed on bone marrow and/or peripheral blood samples of 84 CLL and 12 AML patients.

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Acute lymphoblastic leukemia (ALL) is the most prevalent childhood malignancy in most parts of the world with a 5-year survival rate above 70%. Long-term survivors are at risk for treatment-related late effects and second malignant neoplasms (SMNs). SMNs occur with a mean latency of 6-6.

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Recent studies have demonstrated expression of Fc receptor-like (FCRL) molecules, a newly identified family with preferential B-cell lineage expression, in some chronic B-cell leukemias with possible implication for classification and/or targeted immunotherapy. In this study, the expression pattern of FCRL1-5 genes was studied in 73 Iranian ALL patients and 35 normal subjects using semi-quantitative RT-PCR method. FCRL protein expression was also investigated by flow cytometry.

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Recent molecular investigations have demonstrated over-expression of a large number of tumor associated antigens (TAAs) in a variety of malignancies. Over-expression of ROR1 gene, a member of the receptor tyrosine kinase family, has recently been reported in B-cell chronic lymphocytic leukemia. Wilms' tumor gene 1 (WT1) has long been known as a universal TAA expressed in a variety of solid and hematopoietic malignancies.

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Thalassemia is common in Iran. Appropriate therapy for this disease includes a regular blood transfusion and chelation therapy. However, in this approach patients will inevitably experience side effects, particularly iron overloads in critical organs, including heart, ductless glands, and liver.

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Receptor tyrosine kinases (RTKs) are a group of enzymes involved in a variety of physiological and pathological processes. The human Ror1 is a member of the RTK family with unknown ligand and biological function. Overexpression of Ror1 has recently been reported in B-cell chronic lymphocytic leukemia.

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Wilms' tumor gene 1 (WT1) is a universal tumor-associated antigen (TAA) expressed in a variety of malignancies. High WT1 mRNA expression has been detected in the majority of acute leukemias and has been identified as a convenient marker for disease monitoring. The aim of this study was to evaluate WT1 expression in Iranian ALL patients at diagnosis, relapse and remission.

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Objective: To investigate the effect of chemotherapy on gonadal function of young men cured of childhood Hodgkin's disease.

Methods: Young adult males surviving Hodgkin's disease, aged 17 and over at least 2 years after therapy were studied in Ali Asghar Children's Hospital, Tehran, Iran from March 2000 to March 2005. Clinical evaluation for secondary sexual characteristics, semen analysis, follicle stimulating hormone (FSH), luteinizing hormone (LH), and testosterone was studied in 33 survivors of Hodgkin's disease.

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Background: Wnt molecules play a key role in growth, proliferation and development of some embryonic and adult organs as well as hematopoietic stem cells. Wnt signaling pathways are aberrantly activated in many tumor types, including solid tumors and hematologic malignancies.

Objective: To investigate the expression profile of a large number of Wnt genes in leukemic cells from Iranian patients with acute myeloblastic leukemia.

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Background: Immunophenotypic characterization of the leukemic cells has been widely used as a tool for diagnosis, classification, stratification and prognosis of leukaemia.

Objective: To investigate the immunophenotypic subtype profiles of Iranian patients with acute lymphoblastic leukemia (ALL) and its association to disease outcome.

Methods: In this study, a total of 60 Iranian patients with ALL were immunophenotyped by flow cytometry using a panel of monoclonal antibodies specific for CD2, CD3, CD5, CD10, CD13, CD14, CD19, CD20, CD33, CD34, CD45, HLA-DR and TdT molecules.

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Testis-specific gene antigen (TSGA10) is expressed in fetus, testis and frequently in human solid cancers and acute leukemias, making it a candidate for immunotherapy and for detection of minimal residual disease (MRD). This gene is considered as a member of cancer-testis (CT) genes. We previously demonstrated TSGA10 expression during spermatogenesis.

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Intra-abdominal fibromatosis (IAF) is a rare benign neoplasm arising from the abdominal fibrous tissue, mostly in the mesentery. IAF is characterized by a tendency to infiltrate the surrounding vessels and vital structures and recurrence after usually incomplete surgical removal. Accordingly, IAF is associated with considerable morbidity and mortality.

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Background: Hodgkin's disease (HD) accounts for 7.5% of childhood malignancies in Iran. In order to minimize chemotherapy toxicity and avoid eventual hospitalization and psychological and financial burdens we have applied since 1988, for the first time in Iran, a treatment regimen based on subsequently revised DAL-HD 85-90 and later GPOH-HD 95 protocols.

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Efforts have been undertaken to find an alternative approach to packed red cell transfusion (PRCT) in major beta-thalassemia. Augmentation of fetal hemoglobin (HbF) by hydroxyurea (HU) has been reported to be less effective in this condition as compared to sickle cell anemia due to molecular heterogeneity of the former disease. HU efficacy and its relation to Xmn1 polymorphism and IVSII-1 mutation was evaluated in major beta-thalassemics.

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The authors report on 2 sisters with acute lymphoblastic leukemia diagnosed at age 30 months and 3.5 months. The younger one was referred 15 months after the first.

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Ghosal-type hemato-diaphyseal dysplasia is a rare autosomal recessive disorder with distinctive diaphyseal and metaphyseal dysplasia of long bones and steroid-dependant anemia. The authors describe a 20-month-old girl who had had a severe transfusion-dependent anemia since late infancy and marked locomotion difficulties as a toddler. The diagnosis was established by X-ray bone survey.

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Acute lymphoblastic leukemia is the most common and hepatoblastoma is a rare malignancy diagnosed in children. Their report on an Iranian boy with acute lymphoblastic leukemia diagnosed at the age of 2 years; 20 months later his 10-month-old sister was referred to their hospital with hepatoblastoma. The occurrence of such two types of cancer is rare in a family.

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Article Synopsis
  • Thiamine-responsive megaloblastic anemia (TRMA) is a rare genetic syndrome marked by anemia, hearing loss, and diabetes, inherited in an autosomal recessive manner.
  • A genome scan linked TRMA to a critical region at 1q23, later narrowed down to a 1.4-cM interval through studies of multiple Iranian families.
  • The differing haplotypes in these families suggest that at least two separate genetic mutations are responsible for the disorder, aiding in the search for the specific genes involved.
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