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مرکز اطلاعات علمی SID1
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    100
  • End Page: 

    103
Measures: 
  • Citations: 

    352
  • Views: 

    21446
  • Downloads: 

    17892
Keywords: 
Abstract: 

Background: Sleep problems are common complaints in health care workers that can affect quality of life and productivity, both in patients and healthy individuals. This study evaluates the prevalence of low sleep quality in health care workers with no health issues or complaints of sleep problems.Methods: In this cross-sectional study was conducted on healthy employees of a health care organization in Tehran. The presence of physical and mental health issues and satisfaction from their sleep quality was assessed by means of a self-administered questionnaire. Sleep quality was evaluated by the Persian version of the Pittsburgh Sleep Quality Index (PSQI). PSQI scores of 5 or less were considered as good sleep quality.Results: From 925 participants, 56.9% were good sleepers. There was a significant association between poor sleep quality and female sex, divorced, shift-working, and age; it was not associated with education level. Self-rated health (SRH) had a significant positive correlation with sleep quality.Conclusion: Poor sleep quality is common in our study population and associated with a lower SRH. The high prevalence of poor sleep quality in a group of healthy non-complaining employees can be an important early sign of underlying physical or mental health issues. Providing screening and monitoring programs to detect the underlying health conditions and their consequent treatment can promote health and productivity of employees and improve society’s health, both directly and indirectly.

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    104
  • End Page: 

    108
Measures: 
  • Citations: 

    0
  • Views: 

    15419
  • Downloads: 

    12516
Abstract: 

Background: We compared the T cell antigen receptor (TCR-BV) gene families of peripheral blood mononuclear cells (PMBC) between children with tuberculosis (TB) and those inoculated with the Bacille Calmette Guerin (BCG) vaccine.Methods: The total RNA was extracted from PMBC of 15 TB children, 15 BCG-vaccinated children and 15 healthy controls. The RNAs were reverse-transcribed and amplified by polymerase chain reaction (PCR). PCR products were separated on 1.5% agarose gel and analyzed with the Genescan technique.Results: Some TCR-BV gene families in TB children and BCG-vaccinated children exhibited a blur band in the predicted position on 1.5% agarose gel, some showed a distinct or fainted band. In general, many shared predominant clonal TCR-BV gene families (Vb2, Vb16, Vb21, Vb22) and the restricted-expression families (Vb14 and Vb17). All the gene families of the control children only exhibited blur bands and polyclonal.Conclusions: The skewed profile of TCR-BV gene families in TB children and BCG-vaccinated children are similar, which may probably explain the protective effects of BCG-vaccine against TB in children.

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    109
  • End Page: 

    113
Measures: 
  • Citations: 

    352
  • Views: 

    25908
  • Downloads: 

    28529
Keywords: 
Abstract: 

Background: Agiogenesis is the development of new blood vessels from pre-existing vasculatures. Although essential in the physiological process, it becomes pathological in various diseases including cancer. Preventing the formation of new blood vessels causes reductions in tumor size and metastasis. This study has been undertaken to elucidate the anti-angiogenesis effects of ICD-85 (derived peptides from venom).Methods: We evaluated the ICD-85 anti-angiogenesis activity by the in vivo CAM assay and in vitro tube formation assay of human umbilical vein endothelial cells (HUVECs). The anti-proliferative activity of ICD-85 was also determined through MTT assay on HUVECs.Results: Results of this study revealed the anti-proliferative activity of ICD-85 on the HUVEC cell line with an IC50 of 12 mg/mL. The in vivo CAM assay also clearly showed the prevention of new vascular formation when the chick embryos were exposed to 0.15mg/disc of ICD-85. In vitrotube formation assay of HUVECs also showed the complete prevention of capillary tube formation on 18 mg/mL.Conclusion: Based on the results obtained in this study, ICD-85 has anti-angiogenesis activity as shown by the prevention of capillary tube formation and the CAM assay.

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    114
  • End Page: 

    122
Measures: 
  • Citations: 

    352
  • Views: 

    18226
  • Downloads: 

    24902
Keywords: 
Abstract: 

Psychosocial issues and health-related quality of life (HRQOL) are important components of care in patients diagnosed with chronic hepatitis B (CHBV).In this review, we searched Medline, ISI Web of Knowledge, Google Scholar and the American Association for the Study of Liver Diseases (AASLD) website (until January 2012) using relevant terms and we categorized the retrieved content into three areas: HRQOL, mental health, and psychosocial issues such as stigma and coping.Increasing severity of CHBV leads to a decline in HRQOL. Cirrhosis worsens HRQOL, whereas treatment and psycho-education improves it. Frequency of mood disorders seems to be increased in patients with CHBV, although not all studies have shown this trend. Some factors such as alcohol consumption and low social support negatively impact patients’ mental health. Those with CHBV generally have better HRQOL and mental health than their hepatitis C (HCV) counterparts. Patients with psychiatric disorders, particularly those with prolonged institutionalization, have a generally higher risk of acquiring CHBV infection compared to the general population. Robust studies regarding the stigma in patients with CHBV are lacking, although some studies have suggested a higher degree of perceived stigma in these patients. HRQOL and mental health are significantly affected in CHBV patients, particularly in those with more severe forms of the disease. There are few studies that addressed the effects of intervention in CHBV patients with psychosocial problems. Other subjects necessitating additional research include stigma, coping mechanisms, and other less common, yet important psychosomatic disorders.

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    123
  • End Page: 

    125
Measures: 
  • Citations: 

    0
  • Views: 

    15560
  • Downloads: 

    24511
Keywords: 
Abstract: 

Neuroendocrine tumors (NET) arise from neuroendocrine cells and are an exceedingly rare malignancy in the gallbladder. In this case report, a 52-year-old woman with complaints of episodic abdominal pain for two months prior was admitted to our hospital. She had no other signs and symptoms and her laboratory tests were within normal limits. Ultrasonography showed a broad-necked mass (26×12 mm) in the gallbladder for which she underwent laparoscopic cholecystectomy. The final pathological diagnosis was a high grade neuroendocrine carcinoma of the gallbladder with involvement of the lymph nodes and omentum. The patient received the chemotherapy regimens of gemcitabine plus cisplatin, followed by docetaxel plus sunitinib for her metastatic liver lesions. She also underwent radiofrequency ablation. Serial CT-scans revealed metastatic liver lesions that had decreased in size, with no significant improvement. The patient refused additional treatment and at 46 months, she was doing well with no complaints of any pain, disease recurrence, or metastatic progression.

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    126
  • End Page: 

    128
Measures: 
  • Citations: 

    0
  • Views: 

    21007
  • Downloads: 

    19588
Keywords: 
Abstract: 

Glycogen storage disease II (GSDII or Pompe disease, OMIM # 232300) is an autosomal recessive hereditary lysosomal disorder. Mutations in the GAA gene usually lead to reduced acid a-glucosidase (acid maltase, GAA, OMIM *606800, EC 3.1.26.2) activity, which results in impaired degradation and subsequent accumulation of glycogen within lysosomes. We present an Iranian boy, who was diagnosed with GSDII based upon clinical and biochemical findings. A single adenine insertion (insA) was detected at codon 693 that leads to a predicted premature stop codon at codon 736 in the GAA gene. The parents were heterozygous for the same change. According to the human genome mutation database (www.hgmd.org) and lecture reviews, the detected change is a novel mutation. We suppose that the discovered insertion in the GAA gene might lead to a reduced activity of the gene product. This assumption is in agreement with biochemical and clinical signs in the patient.

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Title: 
Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    129
  • End Page: 

    130
Measures: 
  • Citations: 

    0
  • Views: 

    14554
  • Downloads: 

    13172
Keywords: 
Abstract: 

A 50-year-old female patient presented with productive cough, rhinorrhea, and headaches for the past 16 years. She had episodic fever and worsening of symptoms. Her previous record showed numerous medical tests, including those for tuberculosis (such as repeat chest X-rays) and sputum examination.

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    131
  • End Page: 

    135
Measures: 
  • Citations: 

    352
  • Views: 

    20865
  • Downloads: 

    25017
Abstract: 

The history of malaria as a serious human disease dates back to ancient times. For centuries, malaria has been a deadly disease with high morbidity and mortality that profoundly impacted the socioeconomic status of endemic countries. However, its causative agent remained unidentified until the last decades of the nineteenth century. There were no effective synthetic anti-malarial agents until the mid-twentieth century. Currently malaria has been eliminated or pre-eliminated in numerous countries; however, this preventable and curable disease remains a significant global health problem. A major concern is drug resistance. Presented here, is a brief look at the history of malaria in Iran and the rest of the world, particularly during the nineteenth and twentieth centuries.

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    64
  • End Page: 

    67
Measures: 
  • Citations: 

    0
  • Views: 

    16397
  • Downloads: 

    26858
Abstract: 

Background: Liver transplantation is a treatment for patients who have acute liver failure (ALF). This study aims to evaluate the outcomes following liver transplantation in patients with ALF and compare them with cirrhotic patients who underwent liver transplantation.Methods: This retrospective cross-sectional study was conducted at Shiraz Organ Transplant Center between June 2004 and March 2011 to evaluate the clinical presentation and underlying etiology of patients with ALF and their outcomes following liver transplantation.Results: Out of 750 patients who underwent liver transplants, 12 (8 males and 4 females) had a diagnosis of ALF. The cirrhotic group (control) consisted of 20 transplanted patients. ALF patients were younger with a mean age of 18.7±12.9 years compared to 37.4±13.6 years in the cirrhotic group (P=0.001). In the ALF group, 5 (41.66%) underwent partial living related liver transplantation compared to 1 (5%) in the cirrhotic group (P=0.018). There were significantly more early post-transplant complications observed among patients with ALF compared to the cirrhotic group (P=0.002).Conclusion: Liver transplantation is safe, effective and should be considered in patients diagnosed with ALF.

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    68
  • End Page: 

    73
Measures: 
  • Citations: 

    0
  • Views: 

    16104
  • Downloads: 

    19151
Keywords: 
Abstract: 

Background: Racial differences and broad spectrum response to anti-hepatitis C (anti-HCV) therapy suggest a possible role for host genetic diversity in treatment outcomes. We aim to determine the association and predictive value of certain human leukocyte antigen (HLA) class I alleles with either susceptibility to viral clearance or persistence following pegylated interferon (Peg-IFN) plus ribavirin therapy in chronic hepatitis C (HCV) genotype 4 patients in Egypt.Methods: This study included 200 unrelated chronic HCV patients who received Peg-IFN plus ribavirin therapy [112 patients with sustained virological response (SVR) and 88 non-responders (NR)]. Serological testing of HLA class I antigens (HLA-A and HLA-B alleles) were performed by standard complement-dependent microlymphocytotoxicity assay.Results: The frequency of HLA-A01 was significantly higher in SVR than in NR cases [OR: 0.51; 95% CI: 0.27-0.981; P=0.042], while the frequency of alleles B38 (P=0.011), B40 (P<0.001) and B41 (P<0.001) was significantly higher in NR cases (OR/95% CI: 7.05/ (1.39-18.01), 10.31/3.14-36.1. On logistic regression analysis, presence of the HLA-A01 allele was associated with SVR (OR: 0.50; 95% CI: 0.28-0.89; P=0.02) and HLA-B38 can predict non response to therapy (OR: 7.92; 95% CI: 1.67–37.54; P=0.009) with an overall accuracy of 60%. Severe fibrosis (OR: 3.035; 95% CI: 1.521–6.091; P=0.002), high viremia (OR: 2.69; 95% CI: 1.11-6.53; P=0.005) and steatosis (OR: 2.1; 95% CI: 1.002–3.90; P=0.041) predicted no response with an overall accuracy of 81.8%.Conclusion: HLA-A01 and HLA-B38 alleles are associated with and may have a role in the outcome of response to Peg-IFN plus ribavirin therapy in Egyptian patients diagnosed with chronic HCV infection. The use of immunologic markers to predict the outcome of treatment may help pharmacogenetic personalization of treatment for HCV infection.

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    74
  • End Page: 

    77
Measures: 
  • Citations: 

    0
  • Views: 

    19601
  • Downloads: 

    15123
Abstract: 

Background: Many studies have suggested that visfatin expression is closely related to the occurrence of insulin resistance (IR), while the precise role of visfatin in the regulation of IR in chronic hepatitis C (CHC) is not clear.Methods: We investigated fasting glucose, fasting insulin (FINS), C peptide, visfatin, visfatin mRNA, interleukin (IL) -6, tumor necrosis factor (TNF) -a, C-reactive protein (CRP) and other parameters of 315 patients with CHC and 150 control cases in China. Meanwhile we collected clinical and other laboratory data for further analysis.Results: Compared with the control group, the CHC group had a significant increase in alanine aminotransferase (ALT), aspartate aminotransferase (AST), the AST to platelet ratio index (APRI), ratio of AST to ALT (AAR), gammaglutamyl trans-peptidase, IL-6, TNF-a, visfatin, visfatin mRNA, FINS, fasting C peptide, and IR index. The visfatin, visfatin mRNA, insulin, IR index, Homa b cell function index (HBCI), and fasting b-cell function index (FBCI) of the subjects with high body mass index (BMI) from the CHC sub-group were significantly higher than the normal BMI sub-group of CHC patients. We found a positive correlation between visfatin, visfatin mRNA and BMI, IL-6, TNF-a, and IR index.Conclusion: Our data suggest that visfatin may be related to IR in Chinese CHC patients.

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    78
  • End Page: 

    82
Measures: 
  • Citations: 

    0
  • Views: 

    42159
  • Downloads: 

    25536
Keywords: 
Abstract: 

Background: Celiac disease (CD) may have a variety of different presentations. This study has aimed to explore the prevalence of gastrointestinal (GI) and non-GI symptoms in patients with CD according to data collected in Italy and Romania (Europe) and Iran (Middle East).Methods: This is a retrospective cross-sectional study conducted in Iran, Romania and Italy with data collection during the period from May 2009 -May 2011. For each center we included only patients with CD that was confirmed by endoscopy, small bowel biopsies and positive serology. GI symptoms such as abdominal pain, diarrhea, constipation, nausea and vomiting, weight loss and flatulence, as well as additional signs and symptoms of iron deficiency anemia (IDA), osteoporosis, hypertransaminasemia, and other related abnormalities were collected.Results: Overall, 323 women and 127 men, whose mean age at diagnosis was 34.2±16.47 years were included in this study. Of these, 157 subjects (34.9%) reported at least one GI symptom. The majority of cases had the following primary presenting GI symptoms: diarrhea (13.6%), dyspepsia and constipation (4.0%). Other disease symptoms were reported by 168 (37.3%) patients. The most presenting non-GI symptoms in the majority of cases were anemia (20.7%) and osteopenia (6%). There were statistically significant differences between the majority of symptoms when we compared the reported clinical symptoms from different countries.Conclusion: This study indicated that upper abdominal disorders such as abdominal pain and dyspepsia were the most common primary complaints among European patients, whereas Iranian patients had complaints of diarrhea and bloating as the classic presentations of CD. For non-GI symptoms, anemia was the most frequent complaint for both Iranian and Italian patients; however it was significantly higher in Iranians.

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    83
  • End Page: 

    87
Measures: 
  • Citations: 

    0
  • Views: 

    15691
  • Downloads: 

    26535
Keywords: 
Abstract: 

Background: Severe acute pancreatitis (SAP) is a serious systemic disease with high mortality. This study aims to investigate the role of the chemokine, fractalkine (FKN), in the pathogenesis of SAP and the effects of intervention by ulinastatin on FKN expression in an SAP rat model.Methods: We randomly divided 72 Sprague Dawley rats into the following groups: SAP, ulinastatin treatment (UT), and control (C). The SAP model was induced by retrograde infusion of 4% sodium taurocholate into the bili-pancreatic ducts of the rats. Rats in the UT group were injected with ulinastatin immediately after establishment of the SAP model. Serum FKN levels were detected by ELISA at various time points. Histopathological analyses of the pancreas and lung were performed. Expressions of FKN mRNA in the tissues of the pancreas and lung were detected by real-time fluorescence quantitative polymerase chain reaction (RT-qPCR) at various time points for each group.Results: Serum levels of FKN at 3 h after surgery in the SAP subgroup were significantly higher than those in the C group (P<0.05). There were no significant differences between the UT and C groups observed at various time points. Expression levels of FKN mRNA in the pancreatic tissues of the SAP group increased gradually. Although we observed no difference between the SAP and C groups (P>0.05) at 1 hour h after surgery, mRNA levels of FKN in the lung tissues at 3, 6, and 12 h post-surgery in the SAP subgroups were significantly higher than those in the C group for the same time points (P<0.05). Pathological injury of the pancreatic tissues was more remarkable in the SAP group compared to the UT group.Conclusion: FKN may play an important role in the pathogenesis of SAP and SAP-related acute lung injury (ALI). Ulinastatin efficiently interferes with SAP and SAP-related ALI and may be related to inhibition of FKN expression.

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    88
  • End Page: 

    92
Measures: 
  • Citations: 

    0
  • Views: 

    17323
  • Downloads: 

    28517
Abstract: 

Background: Thalassemia major and its treatment by stem cell transplantation can have deleterious effects on bone integrity. This study assesses the adverse effects of transplantation on growing bones of pediatric thalassemic patients.Methods: Bone mineral density (BMD) of 20 patients from three thalassemia classes whose mean (SD) age was 7.4 (3.8) years were tested with a Norland XR-46 device at baseline (before transplantation), 6 and 12 months after transplantation.Results: At 6 and 12 months after transplantation we observed no significant changes in mean BMD. There were no Z-scores less than -2 among patients. Class 3 thalassemia did not negatively impact BMD. Calcium (Ca), phosphorous (P) and ferritin levels were not significantly related to patients’ BMD scores. Transfusion duration and chelation therapy showed positive significant relationships to BMD (g/ cm2), but no significant relation with the BMD Z-score. The deleterious relation between corticosteroid use and changes in BMD was not significant. In contrast, patients who developed acute graft versus host disease (aGVHD) after transplantation showed significant adverse effects on BMD of their femur (P=0.020) and spine (P=0.027).Conclusion: Stem cell transplantation in pediatric thalassemic patients who do not develop aGVHD does not appear to have any significant positive or negative effects on BMD.

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    16
  • Issue: 

    2
  • Start Page: 

    93
  • End Page: 

    99
Measures: 
  • Citations: 

    0
  • Views: 

    19341
  • Downloads: 

    27696
Keywords: 
Abstract: 

Background: This study seeks to determine the relationships between manifestation of Myofibroblast in the stroma tissue of hyperplastic pre-invasive breast lesions to invasive cancer by investigating clinicopathological data of patients, their effect on steroid receptor expression and HER2, and angiogenesis according to CD34 antigen expression.Methods: Handred cases of invasive ductal carcinoma were immunohistochemically investigated for the presence of smooth muscle actin (SMA), ER/PR, HER2, anti-CD34 antibody and microvessel count (MVC). Patients were scored in four different zones of invasive areas: invasive cancer, DCIS, fibrocystic disease±ductal intraepithelial neoplasia (FCD±DIN), and normal tissue.Results: There was a significant difference in stromal Myofibroblast between all areas except for the stroma of DCIS and FCD±DIN (P<0.001). We observed positive significant correlations between stromal Myofibroblast, HER2 expression, and the numbers of involved lymph nodes in invasive cancer, DCIS, and FCD±DIN (P<0.001). More Myofibroblast were present in grade III cases, with the least frequent observed among grade I cases in the stroma of those with invasive disease, DCIS, and FCD±DIN (P<0.001).MVC was inversely related to stromal Myofibroblast in invasive cancer (P<0.001) and DCIS (P<0.001), whereas there was a positive correlation in the stroma of FCD±DIN (P=0.002) and normal areas (P=0.054). There was a significant difference in MVC observed in all areas except for DCIS and FCD±DIN (P<0.001). We noted significant inverse correlations between MVC, HER2 expression, and the numbers of involved lymph nodes in invasive cancer and DCIS (P<0.001). Most MVC were present in grade I, with the least frequent observed in grade III cases in the stroma of invasive cancer, DCIS and FCD±DIN (P<0.001).Conclusion: Angiogenesis can be observed before any significant myofibroblastic changes in the pre-invasive breast lesions. The elevated content of Myofibroblast in stroma of tumor; probably may be a worse prognostic factor and the steps from atypical epithelial hyperplasia to DCIS and then to the invasive carcinoma do not appear to be always part of a linear progression.

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