The Neuroprotective Effect of α-Lipoic Acid and/or Metformin against the Behavioral and Neurochemical Changes Induced by Hypothyroidism in Rat.

OBJECTIVE: The present study evaluates the neuroprotective effect of α-lipoic acid (ALA) and/or metformin (MET) on the behavioral and neurochemical changes induced by hypothyroidism. METHODS: Rats were divided into control, rat model of hypothyroidism induced by propylthiouracil, and rat model of hypothyroidism treated with ALA, MET, or their combination. RESULTS: Behaviorally, hypothyroid rats revealed impaired memory and reduced motor activity as indicated from the novel object recognition test and open-field test, respectively. Hypothyroidism induced a significant increase in lipid peroxidation (malondialdehyde [MDA]) and a significant decrease in reduced glutathione (GSH) and nitric oxide (NO) in the cortex and hippocampus. These were associated with a significant increase in tumor necrosis factor-α (TNF-α) and a significant decrease in brain-derived neurotrophic factor (BDNF). Hypothyroidism decreased significantly the levels of serotonin (5-HT), norepinephrine (NE), and dopamine (DA) and reduced the activities of acetylcholinesterase (AchE) and Na+, K+-ATPase in the cortex and hippocampus. Treatment of hypothyroid rats with ALA and/or MET showed an improvement in memory function and motor activity. Moreover, ALA and/or MET prevented the increase in MDA and TNF-α, and the decline in GSH, NO, BDNF, 5-HT, NE, and DA. It also restored AchE and Na+, K+-ATPase activities in the studied brain regions. CONCLUSION: ALA and/or MET has a potential neuroprotective effect against the adverse behavioral and neurochemical changes induced by hypothyroidism in rats.

Impact of anticancer therapy on the quality of life of Sudanese patients with breast cancer at Khartoum oncology hospital.

BACKGROUND: Chemotherapy-related toxicity affects the quality of life (QOL) of patients with cancer. Measuring the QOL in breast cancer (BC) patients has been the focus of clinical practices and research in recent decades. This study aimed to assess the impact of BC medications on QOL of Sudanese patients with BC. METHODS: A cross-sectional study was conducted in Khartoum Oncology Hospital, Sudan, from November 2020 to March 2021. All patients diagnosed with BC were included in the study. QOL was assessed using the European Organization for Research and Treatment of Cancer quality of life (EORTC QLQ-C-30) and breast cancer supplementary module (QLQ-BR23). ANOVA, independent t-test and logistic regression analysis were used to assess the association between variables. RESULTS: Two hundred patients were enrolled in the study, with a mean age of 50 ± 11.7 years. 52.5% of the patients were on a conventional therapy whereas 40.5% and 7% received hormonal and HER2-targeted therapies, respectively. In QLQ-C30 scale, the global health-QOL status score was (53.2 ± 1.9), with 54.0% of patients having poor global health-QOL status. In the functional scale, the cognitive functioning was the highest score (80.7 ± 1.8). In QLQ-C30 symptom scale, the most distressing issue was financial difficulties (63.7 ± 2.9). In QLQ-BR23 scale, body image scored the worse functioning (47.7 ± 2.7), with 54.5% of patients having poor QOL. In QLQ-BR23 symptoms scale, "being upset by hair loss" was the highest disturbing symptom (62.1 ± 3.3), with 68.6% of patients having poor QOL. Global health status (P = 0.000), social (P = 0.000), emotional (P = 0.002) and role functioning (P = 0.000) were significantly higher in patients taking HER2-targeted or hormonal therapy compared to conventional therapy. The level of symptomatology was significantly low in patients taking HER2-targeted therapy or hormonal therapy (P = 0.000) than those on conventional therapy. Hormonal (OR = 3.7, p = 0.01) and HER2-targeted therapies (OR = 10.2, p = 0.04 ) were positive predictors of QOL. CONCLUSION: BC survivors in Sudan had a low QOL/global health status. Hormonal and HER2-targeted therapies were predictors of good QOL.

Lack of Agreement on How to Use Antegrade Enemas in Children.

OBJECTIVES: The aim of the present study was to provide an overview of the existing literature regarding the outcomes of the antegrade continence enema (ACE) procedure and to assess the present practices of physicians worldwide regarding the use of the ACE. METHODS: A search of the MEDLINE database was performed using the following criteria: having a clear definition of "successful outcome," published in full manuscript form, sample size >20 patients, age <25 years. We then conducted a survey among 23 pediatric gastroenterologists and surgeons worldwide who were known to use the ACE using an 18-item questionnaire. RESULTS: A total of 21 articles met the inclusion criteria. Successful outcomes were reported in 15% to 100%. Thirteen studies classified the outcome as full continence (success) or incontinence (failure), with a mean successful outcome of 75.6%. The 23 physicians who completed the questionnaire differed in their opinions about indications and mandatory preoperative testing. Constipation with (78%) or without (91%) fecal incontinence, anorectal malformations (96%), and spinal abnormalities (100%) were considered suitable indications for the ACE by the majority. There was less agreement regarding the required preoperative diagnostic workup. Most physicians (70%) start infusions using saline solutions and do not add a stimulant laxative to the cleansing solution. DISCUSSION: There is a wide variation in the reported outcome of the ACE procedure and in the way success is defined. The survey identifies important differences among physicians using the ACE. Consensus on optimal use of the ACE could improve outcome of this treatment option.

The value of fluoroscopic defecography in the diagnostic and therapeutic management of defecation disorders in children.

BACKGROUND: Defecography is a study to assess anorectal function during evacuation. OBJECTIVE: To investigate the value of fluoroscopic defecography in directing diagnostic and therapeutic management in children with defecation disorders. MATERIALS AND METHODS: We reviewed all fluoroscopic defecography studies performed (2003-2009) in children with defecation problems and normal anorectal motility studies. Results were classified into three groups: (1) normal pelvic floor function; (2) pelvic floor dyssynergia, including incomplete relaxation of pelvic musculature, inconsistent change in anorectal angle and incomplete voluntary evacuation; (3) structural abnormality, including excessive pelvic floor descent with an intra-rectal intussusception, rectocele or rectal prolapse. RESULTS: We included 18 patients (13 boys, median age 9.1 years). Indication for fluoroscopic defecography was chronic constipation in 56%, fecal incontinence in 22% and rectal prolapse in 22%. Defecography showed pelvic floor dyssynergia in 9 children (50%), a structural abnormality in 4 (22%) and normal pelvic floor function in 5 (28%). In 12 children (67%) the outcome of fluoroscopic defecography directly influenced therapeutic management. After defecography 4 children (22%) were referred for anorectal biofeedback treatment, 4 children (22%) for surgery, 2 children (11%) for additional MR defecography, and 1 child to the psychology department, and medication was changed in 1 child. In 6 children (33%) the result did not change the management. In 9 children (75%) the change of management was successful. CONCLUSIONS: Fluoroscopic defecography can be a useful tool in understanding the pathophysiology and it may provide information that impacts management of children with refractory defecation disorders.

Adolescent rumination syndrome.

Rumination syndrome is the non-purposeful regurgitation of recently ingested food from the stomach to the mouth, where it is either expelled or reswallowed. Adolescent rumination syndrome (ARS) is a rare condition of which many physicians are unaware. Patients often are misdiagnosed or undergo costly testing, and as a result, diagnosis and treatment are often delayed. While ARS is not life-threatening, it does have medical and emotional effects on the patient and the patient's family. Diagnosis of ARS is based upon the Rome III diagnostic criteria. Antroduodenal manometry, while not required for a diagnosis, can be helpful to confirm the diagnosis. The pathogenesis of this disorder is complex and not well understood. However, because of its behavioral component, treatment of ARS requires a multidisciplinary approach that includes both medical management of symptoms and implementation of strategies that address behavioral, psychological, and general quality-of-life components of the disorder.

Oleic acid triggers metabolic rewiring of T cells poising them for T helper 9 differentiation.

T cells are the most common immune cells in atherosclerotic plaques, and the function of T cells can be altered by fatty acids. Here, we show that pre-exposure of CD4+ T cells to oleic acid, an abundant fatty acid linked to cardiovascular events, upregulates core metabolic pathways and promotes differentiation into interleukin-9 (IL-9)-producing cells upon activation. RNA sequencing of non-activated T cells reveals that oleic acid upregulates genes encoding key enzymes responsible for cholesterol and fatty acid biosynthesis. Transcription footprint analysis links these expression changes to the differentiation toward TH9 cells, a pro-atherogenic subset. Spectral flow cytometry shows that pre-exposure to oleic acid results in a skew toward IL-9+-producing T cells upon activation. Importantly, pharmacological inhibition of either cholesterol or fatty acid biosynthesis abolishes this effect, suggesting a beneficial role for statins beyond cholesterol lowering. Taken together, oleic acid may affect inflammatory diseases like atherosclerosis by rewiring T cell metabolism.

Urinary high molecular weight matrix metalloproteinases as non-invasive biomarker for detection of bladder cancer.

BACKGROUND: Matrix Metalloproteinases (MMPs) are key molecules for tumor growth, invasion and metastasis. Over-expression of different MMPs in tumor tissues can disturb the homeostasis and increase the level of various body fluids. Many MMPs including high molecular weights (HMWs) were detected in the urine of prostate and bladder cancer patients. Our aim here is to assess the usefulness of HMW MMPs as non invasive biomarkers in bilharzial bladder cancer in Egyptian patients. METHODS: The activity of different MMPs including HMW species was determined using zymographic analysis technique in the urine samples procured from sixty six bladder cancer patients (bilharzial and non-bilharzial) as well as hundred healthy control subjects. Also, the correlation between these HMW MMPs activities and different clinico-pathological parameters was investigated. RESULTS: High frequency of urine MMPs (uMMPs) activity was determined in 63.6% of examined tumor cases, however, none of the control cases showed any uMMPs activity. MMP-9 had the highest activity (62%) followed by MMP9/NGAL (60%), MMP-2 (54.5%), MMP-9 dimer (53%), ADAMTS (25.6%), and the lowest one was MMP-9/TIMP-1 (12%) only. There was no correlation between uMMPs and any of clinico-pathological parameters including age, gender, tumor size and type, bilharziasis, grade, lymph node involvement, and invasion to the prostate. A significant correlation was established only between MMP-9/TIMP-1 activities with the tumor size. CONCLUSIONS: This study revealed that the detection of urinary MMPs including HMWs activity might be sensitive biomarkers for prediction of bladder cancer. It is also demonstrate that the detection of these urinary HMW gelatinases could not differentiate between bilharzial and non bilharzial bladder cancer subtypes.

Evaluation of Knowledge and Attitudes of the Population of Tabuk City Regarding Parkinson's Disease: A Cross-Sectional Study.

BACKGROUND: The lack of awareness and information about PD may be a barrier to early diagnosis and the delivery of the best care to patients with the condition, given its rising prevalence. In order to determine the variables that are connected to these parameters, this study sought to ascertain the general public's knowledge and awareness of PD in Tabuk City. METHODS:  In Tabuk City, a cross-sectional demographic survey was carried out. A validated structured questionnaire was used to interview adult respondents by random sampling regarding specific knowledge, attitudes, and awareness related to Parkinson's disease. According to the density of the city, a total of 426 members of the general population were chosen at random and interviewed by skilled interviewers. RESULTS:  Age and educational attainment were independently linked to PD awareness. Bachelor's degree subjects and those between the ages of 18 and 45 displayed a greater awareness of PD. Those above 60 and those between the ages of 46 and 60 lacked sufficient knowledge. The majority of participants demonstrated adequate understanding and awareness of PD in their respective occupations. CONCLUSIONS:  Age, gender, occupation, and level of education were all adequately covered by knowledge and understanding of PD. To increase public knowledge, attitudes, and awareness of PD, however, suitable educational tactics and approaches targeting particular subgroups are required.

Knowledge and Attitude Regarding Gestational Diabetes Mellitus Among Pregnant Women in Tabuk City, Saudi Arabia: An Exploratory Study.

INTRODUCTION: Gestational diabetes mellitus (GDM) refers to any stage of glucose intolerance that begins or is first noticed during pregnancy. GDM has long been an issue in Saudi Arabia. When a pregnant woman who does not already have diabetes is unable to produce enough insulin, GDM develops. GDM patients not only run the danger of developing a number of health issues for themselves but also for the health of their developing fetus. The first step in GDM screening during pregnancy is raising awareness of the condition. METHODS: This was a cross-sectional study conducted to assess knowledge and attitudes with regard to GDM among pregnant women in Tabuk City, Saudi Arabia. The sample size was 539 females from obstetrics and gynaecology clinics in civil and military hospitals. Data collection was done using a valid questionnaire. RESULTS: A total of 539 women were included in the study, spanning various age groups from under 20 to above 40 years, with pregnancy occurrences ranging from one to four times. Most participants exhibited strong understanding, with 410 (76.1%) demonstrating awareness of GDM, and 382 (70.9%) having a clear grasp of its definition. Additionally, a majority displayed positive attitudes toward managing GDM. CONCLUSION: The Saudi women who participated in this study showed good knowledge of GDM and its risk factors, as well as a good attitude regarding the management of GDM and lifestyle modification to reduce its complications. The participants gave adequately logical answers about the sources of information about GDM and about the barriers to effective GDM management. A highly significant association was noticed between knowledge and attitude regarding GDM among the participants (p = <0.001).

Ten-year experience using antegrade enemas in children.

OBJECTIVE: To describe a single-center, 10-year experience with the use of antegrade enemas. STUDY DESIGN: Retrospective analysis of 99 patients treated with antegrade enemas at Nationwide Children's Hospital. RESULTS: Study subjects (median age 8 years) were followed for a mean time of 46 months (range 2-125 months) after cecostomy placement. Seventy-one patients had the cecostomy placed percutaneously and 28 by surgery. Thirty-five patients had functional constipation and 64 patients an organic disease (spinal abnormalities, cerebral palsy, imperforate anus, Hirschsprung's disease). While using antegrade enemas, 71% became symptom-free, in 20 subjects symptoms improved, in 2 subjects symptoms did not change, and in 7 subjects symptoms worsened. Poor outcome was associated with surgical placement of the cecostomy (P < .001), younger age (P = .02), shorter duration of symptoms (P = .01), history of Hirschsprung's disease (P = .05), cerebral palsy (P = .03), previous abdominal surgery (P = .001), and abnormal colonic manometry (P = .004). In 88%, successful irrigation solution included use of a stimulant laxative, and subjects who used a stimulant did significantly better (P < .001) than subjects who started without a stimulant. In 13 patients, the cecostomy was removed 49.7 months after placement without recurrence of symptoms. Major complications occurred in 12 patients and minor complications in 47. CONCLUSIONS: Antegrade enemas represent a successful and relatively safe therapeutic option in children with severe defecatory disorders. Prognostic factors are identified.

Clinical relevance of cyclooxygenase-2 and matrix metalloproteinases (MMP-2 and MT1-MMP) in human breast cancer tissue.

Breast cancer (BC) is the most common neoplasm among women in most developed countries, including Egypt. Elevated levels of certain proteins in human BC are associated with unfavorable prognosis and progressive stages of the disease. The aim of our study was to evaluate the protein expression profile and prognostic significance of cyclooxygenase-2 (COX-2), matrix metalloproteinase-2 (MMP-2), MMP-9 and membrane type 1-MMP (MT1-MMP) and their interaction in operable BC patients. The protein expression of COX-2, MMP-2 and MT1-MMP were evaluated by western blot technique, whereas enzymatic activity of MMP-2 and MMP-9 was determined by zymography in 47 breast cancer patients as well as normal adjacent tissues. Also, the correlation between these proteins and age, tumor size, LN stage, TNM stage, estrogen receptor, progesterone receptor, disease-free survival, and overall survival (OS) has been investigated. As compared to adjacent normal tissues, COX-2, MMP-2 and MT1-MMP were over-expressed in 43, 64, and 60 % of tumor tissues, respectively. In the same pattern, the activity of MMP-2 (62 %) and MMP-9 (45 %) was elevated in BC tissues. Multivariate analysis showed a positive correlation between the protein expression of COX-2, MMP-2, and MT1-MMP and the activity of MMP-2 and MMP-9 in BC patients. However, the enzymatic activity showed no correlation with clinicopathological features. This study confirms the preclinical evidence that COX-2 increased the expression of MT1-MMP, which in turn activates MMP-2. The lack of correlation with clinicopathological features, OS or disease-free survival ascertains the complexity of tumor progression and metastasis with many pro- and counter regulatory factors.

Evaluation of a mindfulness-based intervention program to decrease blood pressure in low-income African-American older adults.

Hypertension affects a large proportion of urban African-American older adults.While there have been great strides in drug development, many older adults do not have access to such medicines or do not take them. Mindfulness-based stress reduction (MBSR)has been shown to decrease blood pressure in some populations. This has not been tested in low-income, urban African-American older adults. Therefore, the primary purpose of this pilot study was to test the feasibility and acceptability of a mindfulness-based program for low income, minority older adults provided in residence. The secondary purpose was to learn if the mindfulness-based program produced differences in blood pressure between the intervention and control groups. Participants were at least 62 years old and residents of a low-income senior residence. All participants were African-American, and one was male.Twenty participants were randomized to the mindfulness-based intervention or a social support control group of the same duration and dose. Blood pressure was measured with the Omron automatic blood pressure machine at baseline and at the end of the 8-week intervention. A multivariate regression analysis was performed on the difference in scores between baseline and post-intervention blood pressure measurements, controlling for age,education, smoking status, and anti-hypertensive medication use. Effect sizes were calculated to quantify the magnitude of the relationship between participation in the mindfulness-based intervention and the outcome variable, blood pressure. Attendance remained 980%in all 8 weeks of both the intervention and the control groups. The average systolic blood pressure decreased for both groups post-intervention. Individuals in the intervention group exhibited a 21.92-mmHg lower systolic blood pressure compared to the social support control group post-intervention and this value was statistically significant(p=0.020). The average diastolic blood pressure decreased in the intervention group postintervention,but increased in the social support group. Individuals in the intervention group exhibited a 16.70-mmHg lower diastolic blood pressure compared to the social support group post-intervention, and this value was statistically significant (p=0.003).Older adults are at a time in life when a reflective, stationary intervention, delivered in residence, could be an appealing mechanism to improve blood pressure. Given our preliminary results, larger trials in this hypertensive study population are warranted.

Gastroesophageal reflux in cystic fibrosis: current understandings of mechanisms and management.

Cystic fibrosis (CF) is an inherited disease that affects both the lungs and the digestive system in children and adults. Thick mucus fills the gut and blocks lumens of the pancreas and hepatobiliary systems, creating insufficient pancreas function and liver disease. Chronic gastrointestinal (GI) complications, including intestinal obstruction, occur in neonates, and poor digestion and gastroesophageal reflux disease (GERD) in children. Although GI symptoms tend to improve with age, CF and associated GERD eventually create respiratory insufficiency; the only available treatment option at this stage is a bilateral lung transplant, which carries considerable morbidity and mortality. While GERD may reoccur as a complication of lung transplantation, GERD symptoms are often reduced following a fundoplication.

A pilot with computer-assisted psychosocial risk-assessment for refugees.

BACKGROUND: Refugees experience multiple health and social needs. This requires an integrated approach to care in the countries of resettlement, including Canada. Perhaps, interactive eHealth tools could build bridges between medical and social care in a timely manner. The authors developed and piloted a multi-risk Computer-assisted Psychosocial Risk Assessment (CaPRA) tool for Afghan refugees visiting a community health center. The iPad based CaPRA survey was completed by the patients in their own language before seeing the medical practitioner. The computer then generated individualized feedback for the patient and provider with suggestions about available services. METHODS: A pilot randomized trial was conducted with adult Afghan refugees who could read Dari/Farsi or English language. Consenting patients were randomly assigned to the CaPRA (intervention) or usual care (control) group. All patients completed a paper-pencil exit survey. The primary outcome was patient intention to see a psychosocial counselor. The secondary outcomes were patient acceptance of the tool and visit satisfaction. RESULTS: Out of 199 approached patients, 64 were eligible and 50 consented and one withdrew (CaPRA=25; usual care=24). On average, participants were 37.6 years of age and had lived 3.4 years in Canada. Seventy-two percent of participants in CaPRA group had intention to visit a psychosocial counselor, compared to 46% in usual care group [X2 (1)=3.47, p=0.06]. On a 5-point scale, CaPRA group participants agreed with the benefits of the tool (mean=4) and were 'unsure' about possible barriers to interact with the clinicians (mean=2.8) or to privacy of information (mean=2.8) in CaPRA mediated visits. On a 5-point scale, the two groups were alike in patient satisfaction (mean=4.3). CONCLUSION: The studied eHealth tool offers a promising model to integrate medical and social care to address the health and settlement needs of refugees. The tool's potential is discussed in relation to implications for healthcare practice. The study should be replicated with a larger sample to generalize the results while controlling for potential confounders.

Implementation of Computerized Physician Order Entry (CPOE) with Clinical Decision Support (CDS) features in Riyadh Hospitals to improve quality of information.

In this paper, we have conducted a preliminary study of the applied Clinical Decision Support (CDS) features in adopted Computerized Physician Order Entry (CPOE) systems. The study was conducted in three hospitals in Riyadh, the capital city of Saudi Arabia. The results show that the adoption of CPOE with a Clinical Decision Support System (CDSS) is not yet mature. CPOE systems allow physicians to enter their medication orders electronically, but many of the applied CPOE systems do not contain alerts to advise physicians of potentially dangerous interactions caused by incorrect medications. Hospitals are advised to enhance the role of CDSS with the CPOE to reduce medication errors, improve patients' safety and increase information quality.

Infant botulism: Report of a misleading case and important key messages.

Infant botulism is a rare and life-threatening disease caused by the inhalation of Clostridium botulinum spores and differs from adult forms. We report the case of infant botulism in a 4-month-old boy who was exclusively breastfed without any consumption of honey. He presented with severe and acute encephalo-myelo-radiculitis. The patient was treated without success for suspected "postviral" central nervous system inflammatory disease. The diagnosis was eventually made 20 days after the onset of symptoms on the basis of a stool sample. Recovery was complete. Infant botulism should be suspected when infants present with acute flaccid paralysis or brainstem weakness and specific immunoglobulins should be administered.

Metformin and alpha lipoic acid ameliorate hypothyroidism and its complications in adult male rats.

Objective: The current study evaluates the effect of metformin (MET) and /or alpha lipoic acid (ALA) on hypothyroidism and its adverse effects on the cardiac, renal, and, hepatic functions in rats. Materials and methods: Rats were divided into five groups: control, rat model of hypothyroidism induced by propylthiouracil (PTU), rat model of hypothyroidism treated with MET, rat model of hypothyroidism treated with ALA, and rat model of hypothyroidism treated with MET and ALA. At the end of the experiment, body weight gain was determined and the blood samples were collected from orbital plexus to measure the serum levels of thyroxine (T4), triiodothyronine (T3) and thyroid stimulating hormone (TSH) by ELISA, glucose level, the activities of lactate dehydrogenase (LDH), creatine kinase MB (CK-MB), aspartate aminotransferase (AST), alanine aminotransferase (ALT), and alkaline phosphatase (ALP), and the levels of urea and creatinine spectrophotometrically. Results: Rat model of hypothyroidism revealed a significant decrease in T4 (p < 0.001) and T3 (p < 0.001) and a significant increase in TSH (p < 0.005). This was accompanied by a significant decrease in the body weight gain (p < 0.025) and a significant increase in LDH (p < 0.001), CK-MB (p < 0.001) AST (p < 0.01), ALT (p < 0.016), ALP (p < 0.001), glucose (p < 0.001), urea (p < 0.001) and creatinine (p < 0.001). MET restored T4, T3 and TSH to control values. Treatment with ALA restored T3 and TSH levels. Treatment with Met and /or ALA reduced the levels of glucose, urea and creatinine and the activities of LDH, CK-MB, AST, ALT, and ALP to control-like values. Only ALA improved the reduced body weight gain induced by hypothyroidism. Conclusion: The present findings indicate the ameliorative effects of MET and /or ALA on hypothyroidism and its adverse effects on cardiac, renal and hepatic functions. Supplementary information: The online version contains supplementary material available at 10.1007/s40200-022-01063-7.

Blood Transfusion Vs. Hydroxyurea for Stroke Prevention in Children With Sickle Cell Anemia: A Systematic Review and Meta-Analysis.

Sickle cell anemia (SCA) is a hereditary condition that can lead to severe complications in children such as acute coronary syndrome, splenic sequestration, renal failure, and stroke. Blood transfusion and hydroxyurea (HU) therapy are used to prevent stroke in children with sickle cell disease (SCD). Preliminary data show considerable variation and inconsistency in the use of these two therapeutic interventions. Therefore, this systematic review was carried out to compare the effects of blood transfusion to HU therapy in preventing stroke for children with sickle cell disease. There was an extensive literature search in reliable and authentic databases like PubMed, Medline, Scopus, Cochrane, and Science Direct to obtain relevant articles. This study used the standards and guidelines from the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). During the systematic review, data were obtained focusing on the following parameters: the size of the sample in the study, the age of the subjects involved in the study, the type of Intervention, and the outcome. After an initial search of 163 papers, 25 studies were included. The results of the research give the first evidence that HU is effective in the treatment of cerebrovascular problems in children with SCD. However, it is unclear under what circumstances HU may prevent a second stroke. It can be concluded that children with SCA can effectively avoid primary strokes through chronic blood transfusions and HU.

Esophageal impedance monitoring for gastroesophageal reflux.

Dual pH-multichannel intraluminal impedance (pH-MII) is a sensitive tool for evaluating overall gastroesophageal reflux disease, and particularly for permitting detection of nonacid reflux events. pH-MII technology is especially useful in the postprandial period or at other times when gastric contents are nonacidic.pH-MII was recently recognized by the North American Society for Pediatric Gastroenterology, Hepatology, and Nutrition and the European Society for Pediatric Gastroenterology, Hepatology, and Nutrition as being superior to pH monitoring alone for evaluation of the temporal relation between symptoms and gastroesophageal reflux. In children, pH-MII is useful to correlate symptoms with reflux (particularly nonacid reflux), to quantify reflux during tube feedings and the postprandial period, and to assess efficacy of antireflux therapy. This clinical review is simply an evidence-based overview addressing the indications, limitations, and recommended protocol for the clinical use of pH-MII in children.

Single nucleotide polymorphism at exon 7 splice acceptor site of OAS1 gene determines response of hepatitis C virus patients to interferon therapy.

BACKGROUND AND AIM: Response to interferon therapy and disease progression in hepatitis C virus (HCV) infected patients differs among individuals, suggesting a possibility of a contribution of host genetic factors. 2'-5'-oligoadenylate synthetase 1 (OAS1), an important component of the innate immune system with a proven antiviral function, may therefore have a relationship with the response to interferon therapy and clinical course of HCV disease. Our aim was to determine the frequency of single nucleotide polymorphism (SNP) at exon 7 splice acceptor site (SAS) of the OAS1 gene in relation to the interferon response and status of HCV infection. METHODS: A 203 bp fragment containing exon 7 SAS was amplified in 70 HCV chronic patients and 50 healthy controls. SNP was examined using restriction fragment length polymorphism (RFLP) genotyping method. Correlations of SNP genotypes with response to interferon and clinical status of patients were statistically analyzed. RESULTS: There was an increasing trend of response from AA to AG to GG genotypes (P = 0.007). Genotype AA was associated with non-response to interferon and higher degree of liver fibrosis (P = 0.05). Multivariate analysis showed this SNP as independent and a significant determinant of the outcome of interferon therapy (odds ratio 4.913 [95% confidence interval 1.365-8.2], P = 0.006). CONCLUSIONS: This is the first study to show a significant association between the functional SNP at exon 7 SAS of OAS1 gene and the viral response to interferon in chronic HCV patients. Patients with AA genotype were associated with progressive HCV disease and viral resistance to interferon therapy. This OAS SNP is a potential bio-marker to predict IFN response in chronic hepatitis C patients.