Advanced Biomedical Research
Volume:6 Issue: 5, May 2016

Otitis media (OM) is the most common cause of childhood hearing loss and reason to visit the pediatrician. Furthermore, gastroesophageal reflux (GER) has been associated with a variety of upper aerodigestive tract symptoms or diseases, such as sinusitis, laryngitis, and otits. The objective of the present study was to determine the frequency of GER in children, aged 3 months to 7 years, with OM.

This retrospective case‑control study was conducted on 50 children with OM and 50 healthy children. Presence of GER as the main variables was diagnosed by clinical examination in all studied children using the questionnaires with 2 age‑stratified versions of the pediatric GER disease symptoms for children 2 years old and younger, and children 3–7 years old.

The prevalence of GER in children with OM and controls was 58% and 22% respectively (P = 0.0005). The frequency of irritability, congestion, and feeding complex in children with OM were significantly more than in control groups. Among children with recurrent acute OM (AOM), and chronic serous OM (CSOM) the prevalence of GER was significantly more than controls (61.1%, vs. 22% for AOM, P = 0.004, and 72.7% vs. 22%, P = 0.003). In children with AOM, regurgitation, vomiting, irritability and congestion were significantly higher than controls included. In children with CSOM, regurgitation, vomiting, and congestion were significantly higher than controls.

Results show a significant association between GER and OM, AOM and CSOM in children with OM compares to healthy children. This shows that looking for GER in children with OM may help improving treatments outcomes.

In Asian population, diabetes mellitus is increasing and has become an important health problem in recent decades. In Iran, cardiovascular disease (CVD) accounts for nearly 46% of the total costs spent for diabetes‑associated diseases. Because individuals with diabetes have highly increased CVD risk compared with normal individuals, it is important to diagnosis factors that may increase CVD risk in diabetic patients. The study objective was to identify predictors associated with CVD mortality in patients with type 2 diabetes (T2D) and to develop a prediction model for cardiovascular (CV)‑death using a competing risk approach.

The study population consisted of 2638 T2D (male = 1110, female = 1528) patients aged ≥35 years attending from Endocrine and Metabolism Research Center in Isfahan for a mean follow‑up period of 12 years; predictors for different cause of death were evaluated using cause specific Cox proportional and subdistribution hazards models.

Based on competing modeling, the increase in blood pressure (BP) (spontaneously hypertensive rats [SHR]: 1.64), cholesterol (SHR: 1.55), and duration of diabetes (SHR: 2.03) were associated with CVD‑death. Also, the increase in BP (SHR: 1.85), fasting blood sugar (SHR: 2.94), and duration of diabetes (SHR: 1.68) were associated with other death (consist of cerebrovascular accidents, cancer, infection, and diabetic nephropathy).

This finding suggests that more attention should be paid to the management of CV risk in type 2 diabetic patients with high cholesterol, high BP, and long diabetes duration.

Meningioma constitutes 20% of the intracranial neoplasms. Followed by surgery as the primary treatment for most patients, radiotherapy becomes indicated in high‑grade tumors with incomplete surgical removal. We evaluated the prognostic factors and overall outcome in meningioma patients who underwent radiotherapy.

In this retrospective analysis, data from all patients with documented diagnosis of meningioma who referred to the Omid and Ghaem Oncology Centers (Mashhad, Iran) from 2002 to 2013 were included. We calculated the overall survival rates using the Kaplan–Meier method and compared the survival curves between groups by the log‑rank test.

Eighty‑three patients with a median age of 50 years (ranging: 16–84) were included. Grade I, II, and III meningiomas were seen in 40 (48%), 31 (37%), and 12 (15%) patients, respectively. Radiation therapy was indicated due to tumor recurrence, incomplete excision, or tumor grade in 32, 8, and 43 patients, respectively. Tumor grade had a significant effect on the overall survival with a 3‑year overall survival of 76.7%, 43.5%, and 13.3% in Grade I, II, and III, respectively (P < 0.001). Gender, age, and tumor location were not correlated with the overall survival. Moreover, patients with Grade II and III who underwent total resection had a significantly higher overall survival than those with subtotal resection or biopsy alone (5‑year survival rates of 82% vs. 17.1%, respectively; P = 0.008).

Tumor grade was the most important prognostic factor in meningioma patients undergoing radiation therapy. In patients with Grade II and III tumors, the extent of surgical resection is significantly correlated with the overall survival.

Intralesional injection of autologous blood‑derived products has recently gained attention as a potential treatment for plantar fasciitis (PF). We compared platelet‑rich plasma (PRP) and whole blood (WB) for the treatment of chronic PF.

Patients with chronic PF received either an intralesional injection of 3 cc PRP prepared by double centrifuge technique or WB (n = 17 in each group). Overall, morning and walking pain severity were assessed by 11‑point numerical rating scale, and function was assessed by the Roles and Maudsley score (RMS) at baseline and 1‑month and 3 months after treatment. Ultrasonography was performed to measure plantar fascia thickness at baseline and 3 months after treatment.

Pain scores were reduced over the study in the PRP (mean change = −5.00 ± 1.17 to −5.47 ± 1.46) and WB groups (mean change = −5.29 ± 2.56 to −6.47 ± 2.83), with no difference between groups (P > 0.05). One month and 3 months after treatment, successful treatment (RMS of ≤ 2) was respectively observed in 29.4% and 82.3% of the PRP and in 47.1% and 76.4% of the WB groups (P > 0.05). Also, fascia thickness was decreased in both the PRP and WB groups (mean change = −1.74 ± 1.11 vs. −1.21 ± 0.73 mm, respectively, P = 0.115).

Significant improvement in pain and function, as well as decrease in plantar fascia thickness, was observed by intralesional injection of the PRP and WB in patients with chronic PF. The study results indicate similar effectiveness between PRP and WB for the treatment of chronic PF in short‑term

Hepatitis B virus infection (HBV) and its complications is one of the most serious problems of the health system in many parts of the world. In the present study, we will assess chronic and occult HBV and isolated anti‑Hepatitis B core antigen whose screening and evaluation is not routine in different populations.

This descriptive analytical study was conducted on 213 patients undergoing chemotherapy ‑ radiotherapy referred to the hematology ‑ oncology clinics of Isfahan, Iran in 2012. In order to determine the serum levels of hepatitis B surface antigen (HbSAg), Hepatitis B Antigen and Antibody (HBCAb), aspartate aminotransferase (AST), alanine transaminase (ALT) and Alkaline phosphatase (ALK.P), venous blood samples were obtained. If the HBCAb sample was positive, another sample of the serum was sent to the laboratory to perform polymerase chain reaction and to determine viral load.

The mean age of the patients was 47.7 ± 9 years, with an age range of 27 ‑73 years; 98 (46%) and 115 (54%) cases were male and female, respectively, with mean age of 51.9 ± 8.3 and 44.1 ± 8.1 years, and there was no significant difference (P < 0.001). The mean level of liver enzymes including AST, ALT and ALK.P were 34.2 ± 36.02, 38.9 ± 47.1 and 252.1 ± 234.7, respectively. Two cases were HbSAg positive (0.9%) and six cases were HBCAb positive (2.8%) and HbSAg negative. Three cases had a high viral load at the rate of starting treatment among positive anti‑HBC patients.

Because occult hepatitis is investigated less commonly in routine studies, it seems that screening and evaluating its prevalence is useful in the management of patients.

Methicillin‑resistant Staphylococcus aureus (MRSA) is a frequent cause of infections. The changing epidemiology of MRSA became evident in the 1990s when CA‑MRSA cases were first reported. Nasal carriage of CA‑MRSA is associated with an increased risk for development of infections in various populations.

Anterior nares culture for the presence of methicillin‑susceptible Staphylococcus aureus (MSSA) and MRSA was taken from 345 children attending kindergartens, who didn’t have any known risk factor for MRSA colonization. Also, children demographic variables were recorded. Identification of SA and community‑acquired methicillin‑resistant Staphylococcus aureus (CA‑MRSA) with standard microbiological test was performed. Finally, the susceptibility of isolated to various antibiotics determined. The data were analyzed with Whonet 5.6 software.

Of 345 children, 20 children (5.8%) were colonized with CA‑MRSA, 86 children (24.9%) with MSSA and 239 cases (69.3%) didn’t have SA colonization. The highest rate of MSSA and MRSA colonization was obtained at the age of 6 years. The frequency distribution of SA (MSSA and MRSA) colonization prevalence didn’t have any significant differences based on age, gender and the admission time (P > 0.05); but it was significantly different in the urban areas (P < 0.001). The lowest resistance rate of CA‑MRSA isolates, with a frequency of 10%, was detected with gentamicin, rifampin, and trimethoprim‑sulfamethoxazole.

In summary, CA‑MRSA colonization was observed in child care centers remarkably. Therefore, by facing various infections due to SA especially in areas of low socio‑economic status, it must be considered. Based on antibiogram test, empirical treatment with rifampin, gentamicin and ciprofloxacin is recommended during CA‑MRSA infections.

The aim of this study was to evaluate the effect of drill‑generated noise on hearing loss in non‑operated ear and if any, was temporary or persistent.

In this prospective clinical study, 23 patients who had undergone mastoidectomy and normal contralateral hearing were enrolled. Patients were evaluated preoperatively and postoperatively (1 and 7 days) following surgery using low and high‑frequency pure tone audiometry (PTA) and low and high‑frequency transient evoked and distortion product otoacoustic emission (DPOAE) testing.

Comparing preoperative and 1‑day after surgery, PTA averages were significantly different at low frequencies, but no statistical significant differences were observed at 0.25 KHz and high‑frequencies. Comparing 1‑day after surgery and 7 days after surgery showed that, PTA averages at 0.5, 2 and 2 KHz were significantly different with no significant differences at the other average of thresholds in low and high frequencies; PTA average at 1 KHz was significantly different with, no significant differences at the other averages of thresholds in low and high frequencies. DPOAEs showed a significant difference preoperative and 1‑day after surgery, 1‑day and 7 days after, but DPOAEs were not significantly different. Transiently evoked otoacoustic emissions (TEOAEs) had a significant difference preoperative and 1‑day after surgery, 1‑day and 7 days after but when comparing preoperative and 7 days after surgery, TEOAEs were not significantly different.

Drill‑induced noise during ear surgery (mastoidectomy) can cause reversible changes in PTA, DPOAEs and TEOAEs in the non‑operated ear

Considering the increasing trend of childhood obesity and subsequent burden of the disease in Iran and other countries and importance of early life intervention for achieving sustained effect on health of children and adolescents, this study aimed to investigate the effect of two different dose of folic acid on homocysteine (Hcy) level and insulin resistance of obese children.

In this randomized, double‑blind controlled clinical trial study, 60 obese and overweight children aged 5–12 years were enrolled. Selected obese children randomly allocated in two interventional (1 mg/day folic acid and 5 mg/day folic acid, for 8 weeks) and one control groups. Biochemical measurements including folic acid, Hcy, insulin and insulin resistance were measured between and within groups before and after trial.

In each group, 20 obese children were studied. The three groups were age and sex matched. After folic acid administration, mean of Hcy, insulin resistance and insulin decreased significantly in two groups which folic acid administrated with two different doses (P < 0.05). The reduction in studied biochemical variables was similar in two interventional groups (1 and 5 mg folic acid daily) (P > 0.05). Mean differences for Hcy, insulin resistance and insulin, in two intervention groups were significantly higher than the control group (P < 0.0001). Mean differences of Hcy, insulin resistance and insulin, in two intervention groups were not different significantly (P > 0.05).

The findings of current trial showed that folic acid in two studied doses could be a safe and effective supplement for obese children to reduce Hcy level and insulin resistance, which consequently could prevent obesity‑related complications including cardiovascular and metabolic disorders.

Traditional teaching methods used in medical education cannot wholly respond to the rapid changes and growth of information as well as continuous changes in the educational needs of society, especially patients with chronic diseases such as multiple sclerosis (MS). Therefore, this study was designed with the aim of examining the effect of electronic package on satisfaction in MS patients.

The research was a quasi‑experimental study. It was carried out at the MS Kashani Center affiliated to the Isfahan University of Medical Sciences, in 2013. One hundred twenty‑eight patients with MS were allocated randomly into two equal groups of 64 each for education by booklet (control) and education by multimedia software (experimental) for 2 weeks. Data were collected by processing questionnaires, which consisted of questions about satisfaction (17 items) and questions about demographic and disease characteristics (9 items), answered by both groups before and 2 weeks after education. SPSS version 14 (DARYA software, Iran) was used to conduct statistical tests such as the independent t‑test and the paired t‑test for analyzing the data. The statistical significance level was less than 0.05.

The results show that there was not any significant difference between the satisfaction scores of the electronic package and control groups before intervention, but that there was a significant difference after 2 weeks’ intervention (P = 0.010).

The electronic programs comprised an attractive education method. So this technology can increase motivation in MS patients to study more about the disease process.

Hepatitis C infection is one of the most common causes of liver‑related morbidity and mortality. Due to limited efficacy and side‑effects of treatment, identification of the determinants of response to treatment is an important issue. Nowadays, genotyping of interleukin (IL)‑28B is one of the strongest tests used for prediction of sustained virological response. The prevalence of IL28B genotypes varies across different ethnicities. This study presents data on IL28B single nucleotide polymorphism (SNP) (rs12979860) in a group of Iranian hepatitis C virus (HCV)‑infected patients in Isfahan.

One hundred patients already diagnosed for hepatitis C enrolled the study. Genomic DNA was extracted from whole blood samples. Specific primers were used to amplify IL28B gene (rs12979860). The rs129679860 SNP was genotyped by real‑time polymerase chain reaction using TaqMan® probes.

The mean age of patients was 33.16 years (25–42 years). Ninety‑nine subjects were male and 1 was female. The frequency of HCV genotypes was as follows: Genotype 3a: 53%, genotype 1a: 42%, genotype 1b: 2%, mixed genotype (1a + 3a): 1% and 2%: Nontypable. IL28B rs12979860 genotypes were TT in 17 patients (17%), CT in 41 patients (41%), and CC in the remaining 42 patients (42%).

The prevalence of C allele is much higher in our population study than in African American HCV patients (62.5% and 40% respectively), which can explain better response to treatment in our patients.

E‑cadherin (CDH1) plays an important role in cell–cell adhesion of epithelial tissues. Loss of E‑cadherin expression can lead to loss of tissue integrity, metastasis, and cancer progression. Also loss of E‑cadherin expression might be related to aberrant promoter methylation of the CDH1 gene. Many studies have been performed on CDH1 promoter methylation, especially in breast cancer. Although most of the studies have used qualitative methods for methylation analysis, this study is designed to quantitatively investigate CDH1 promoter methylation in breast cancer and its correlation with patients’ clinicopathological features.

Using differential high resolution melting analysis (D‑HRMA), the methylation level of the CDH1 gene promoter was quantified in 98 breast cancer formalin‑fixed paraffin‑embedded (FFPE) tissues and also 10 fresh frozen normal breast tissues.

All samples were detected to be methylated at the CDH1 promoter region. About 74.5% of the breast cancer samples were hypermethylated with an average methylation level of around 60%, while 25.5% of the patients were methylated with the mean methylation level of about 33%, and 90% of the normal samples had a mean methylation level of about 18%. Statistical analyses represented a significant correlation between CDH1 promoter methylation and cancer progression hallmarks, such as, clinical stage, nodal involvement, tumor size, and histological grade.

In summary, quantitation of CDH1 promoter methylation can serve as a diagnostic and prognostic tool in breast cancer. Also D‑HRMA can be used as a fast and reliable method for quantitation of promoter methylation.

The use of medicinal plants in modern medicine for the prevention and treatment of cancer is an important aspect. For this reason, it is important to identify antitumor promoting agents present in medicinal plants commonly used by the human population.

We used in vivo and in vitro methods using chromosomal aberrations (CAs), sister chromatid exchange (SCE) and replication index (RI) as markers, exposed by methyl methanesulfonate (MMS) as well as alcoholic extract of Alstonia scholaris in five increasing concentrations (200, 250, 300, 350 and 400 mg/kg body weight for in vivo and 150, 200, 250 and 300 μg/ml of culture) and of three different durations of 24, 48 and 72 h in the presence as well absence of S9 mix.

Extracts of Alstonia reduces the total aberrant cells ranges from 10.0% to 41.84% and frequencies of aberration in the aberrant cells ranges from 220 to 124 against 290 aberrations causes due to MMS in vivo. Similarly in the in vitro, it reduces CAs (39.62%, 32.83%, and 38.48%) and (45.31%, 44.46%, and 38.34%) at 24, 48, and 72 h of exposure respectively; in the absence as well as presence of liver S9 fraction. It also reduces SCE from 7.70 to 4.20 per cell and enhances RI from 1.45 to 1.64.

Extracts of Alstonia significantly reduces the number of aberrant cells and frequency of aberration per cell at each concentration and duration of exposure in vivo; and CAs and SCE in vitro and enhances RI.

Stress can alter response to nociception. Under certain circumstances stress enhances nociception, a phenomenon which is called stress‑induced hyperalgesia (SIH). While nociception has been studied in this paradigm, possible alterations occurring in passive avoidance (PA) learning after exposing rats to this type of stress has not been studied before.

In the current study, we evaluated the effect of chronic swim stress (FS) or sham swim (SS) on nociception in both spinal (tail‑flick) and supraspinal (53.5 ̊C hot‑pate) levels. Furthermore, PA task was performed to see whether chronic swim stress changes PA learning or not. Mobility of rats and anxiety‑like behavior were assessed using open‑field test (OFT).

Supraspinal pain response was altered by swim stress (hot‑plate test). PA learning was impaired by swim stress, rats in SS group did not show such impairments. Rats in the FS group showed increased mobility (rearing, velocity, total distant moved (TDM) and decreased anxiety‑like behavior (time spent in center and grooming) compared to SS rats.

This study demonstrated the simultaneous impairment of PA and nociception under chronic swim stress, whether this is simply a co‑occurrence or not is of special interest. This finding may implicate a possible role for limbic structures, though this hypothesis should be studied by experimental lesions in different areas of rat brain to assess their possible role in the pathophysiology of SIH

This study has carried out to find the recovery rate, depression recurrence, changing of diagnose into bipolar mood disorder (BMD) and appearing other psychiatric disorders including obsessive compulsive disorder, oppositional defiant disorder (ODD), substance induced disorders, attention deficit and hyperactivity disorder, and anxiety disorders after 6 years among students having major depression disorder in Isfahan and its relation to some demographic factors.

In this historical cohort study, 278 students studying in guidance school, in 2006 being 11–16‑year‑old and were diagnosed to have major depressive disorder participated. Data collection was done by completing children depression on inventory, Young Maria Rating Scale and also final diagnosis determination through interview by psychiatrists. To analyze the data, in addition to use descriptive statistics, multinomial and multiple logistic regressions were used to evaluate the relationships. All the analyses were done using SPSS 20.

About 34.9 of adolescents have suffered from depression after 6 years. Depression in 12.2% has been changed into BMD. The BMD morbidity chance was less in girls rather than depression one. The ratio of drug abuse in girls was less than boys (odds ratio [OR] = 0.471, P = 0.046). Students received no treatment or only pharmacotherapy, were more caught by ODD in comparison with those cases who received both pharmacotherapy and psychotherapy (P = 0.005, 0.038 and OR = 4.29 and 5.88).

About half of students after 6 years are caught by depression or BMD. It reveals the importance of this disorder and its role in making behavioral problems for adolescents in their future

Epstein-Bar virus (EBV) is the main etiology of infectious mononucleosis (IM) syndrome that is characterized by fever, sore throat, and lymph adenopathy. Since, this virus could be associated with a number of malignancies, some hematologic disorders, and chronic fatigue syndrome, identification of IM is very important. The aim of study was to evaluate the specificity, as well as sensitivity of the two different methods that is, serology versus molecular diagnosis that are currently used for diagnosis of IM.

In this study, during a period of 3.5 years, 100 suspected patients as case group and 100 healthy individuals as a control group were studied. Fifty samples in each group were tested by polymerase chain reaction (PCR) and all the samples including case group and control group were carried out by enzyme-linked immunosorbent assay (ELISA).

In 76% of patients and in 20% of the healthy individuals, samples were detected EBV DNA by PCR. On the other hand, 68.5% of the samples belong to the case group and 46% in the control group showed positivity by ELISA.

By comparing the two methods, since PCR is very expensive and time consuming, and the percentages of difference ranges are narrow, ELISA could be applied as a first, easiest, and preliminary diagnostic test for IM. In addition, this test could be applied in various phases of the disease with a higher sensitivity comparing to PCR. Although PCR is routinely used for diagnosis of various infectious agents, it is considered as an expensive test and merely could be used after 1-2 weeks from the onset of the illness.

Iron dextran is in common use to maintain iron stores. However, it is potentially toxic and may lead to iron deposition (ID) and impair functions of organs. Iron overload can regulate the expression of inducible nitric oxide synthase (iNOS) in some cells that has an important role in tissue destruction. S-methylisothiourea hemisulfate (SMT) is a direct inhibitor of iNOS, and this study was designed to investigate the effect of SMT against kidney ID in iron overload rats.

24 Wistar rats (male and female) were randomly assigned to two groups. Iron overloading was performed by iron dextran 100 mg/kg/day every other day for 2 weeks. In addition, during the study, groups 1 and 2 received vehicle and SMT (10 mg/kg, ip), respectively. Finally, blood samples were obtained, and the kidneys were prepared for histopathological procedures.

SMT significantly reduced the serum levels of creatinine and blood urea nitrogen. However, SMT did not alter the serum levels of iron and nitrite, and the kidney tissue level of nitrite. Co-administration of SMT with iron dextran did not attenuate the ID in the kidney.

SMT, as a specific iNOS inhibitor, could not protect the kidney from ID while it attenuated the serum levels of kidney function biomarkers.

Since when the cartilage damage (e.g., with the osteoarthritis) it could not be repaired in the body, hence for its reconstruction needs cell therapy. For this purpose, adipose‑derived stem cells (ADSCs) is one of the best cell sources because by the tissue engineering techniques it can be differentiated into chondrocytes. Chemical and physical inducers is required order to stem cells to chondrocytes differentiating. We have decided to define the role of electric field (EF) in inducing chondrogenesis process.

A low frequency EF applied the ADSCs as a physical inducer for chondrogenesis in a 3D micromass culture system which ADSCs were extracted from subcutaneous abdominal adipose tissue. Also enzyme‑linked immunosorbent assay, methyl thiazolyl tetrazolium, real time polymerase chain reaction and flowcytometry techniques were used for this study.

We found that the 20 minutes application of 1 kHz, 20 mv/cm EF leads to chondrogenesis in ADSCs. Although our results suggest that application of physical (EF) and chemical (transforming growth factor‑β3) inducers at the same time, have best results in expression of collagen type II and SOX9 genes. It is also seen EF makes significant decreased expression of collagens type I and X genes.

The low frequency EF can be a good motivator to promote chondrogenic differentiation of human ADSCs.