Abdelrahman Kobtan
Tanta University
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Featured researches published by Abdelrahman Kobtan.
Gastroenterology Research and Practice | 2016
Mohamed Sharaf-Eldin; Adel Salah Bediwy; Abdelrahman Kobtan; Sherief Abd-Elsalam; Ferial El-Kalla; Loai Mansour; Walaa Elkhalawany; Mohamed Elhendawy; Samah Soliman
Background and Aims. Treatment of hepatic hydrothorax is a clinical challenge. Chest tube insertion for hepatic hydrothorax is associated with high complication rates. We assessed the use of pigtail catheter as a safe and practical method for treatment of recurrent hepatic hydrothorax as it had not been assessed before in a large series of patients. Methods. This study was conducted on 60 patients admitted to Tanta University Hospital, Egypt, suffering from recurrent hepatic hydrothorax. The site of pigtail catheter insertion was determined by ultrasound guidance under complete aseptic measures and proper local anesthesia. Insertion was done by pushing the trocar and catheter until reaching the pleural cavity and then the trocar was withdrawn gradually while inserting the catheter which was then connected to a collecting bag via a triple way valve. Results. The use of pigtail catheter was successful in pleural drainage in 48 (80%) patients with hepatic hydrothorax. Complications were few and included pain at the site of insertion in 12 (20%) patients, blockage of the catheter in only 2 (3.3%) patients, and rapid reaccumulation of fluid in 12 (20%) patients. Pleurodesis was performed on 38 patients with no recurrence of fluid within three months of observation. Conclusions. Pigtail catheter insertion is a practical method for treatment of recurrent hepatic hydrothorax with a low rate of complications. This trial is registered with ClinicalTrials.gov Identifier: NCT02119169.
Arab Journal of Gastroenterology | 2015
Abdel Raouf Abou El Azm; Mohamed Yousef; Abdelrahman Kobtan; Aymen Awad; Galal Elkassas; Asem Ahmed Elfert
BACKGROUND AND STUDY AIMS Ulcerative colitis (UC) is a lifelong, chronic, progressive, and relapsing inflammatory disease. Endoscopy with biopsies is the mainstay in diagnosis and assessment. The development of biomarkers is important for the diagnosis and follow-up of UC. We investigated the expression of molecular chaperones/heat-shock proteins (HSP70 and HSP90) in relation to the grades of inflammation and dysplasia in patients with UC before and after treatment. PATIENTS AND METHODS A total of 104 naïve patients with UC of varying severity were admitted to the Department of Tropical Medicine and Infectious Diseases, Tanta University Hospital. Ten biopsies from the healthy mucosa of patients with irritable bowel syndrome (IBS) served as a control. Disease activity was assessed clinically using the Mayo score system. Endoscopic mucosal biopsies were taken at diagnosis and 6 months after treatment. Histopathological activity was graded for inflammation and dysplasia. Immunohistochemistry was used to determine the percentage of cells positive for HSPs. The results were expressed in a semiquantitative scale. RESULTS The expression of both HSP70 and HSP90 increased in patients with UC at the time of disease activity, and it decreased after treatment and remission. There was a significant correlation between the expression of both proteins and the grades of dysplasia as well as inflammation (P < 0.05). Strong expression of HSPs that persisted after treatment has been associated with cases of true dysplasia. CONCLUSIONS The results indicated that HSP70 and HSP90 had the potential for assessment of the activity and prognosis of UC. They can also predict the presence of dysplasia and differentiate it from reactive atypia. Larger studies are needed to confirm this diagnostic and prognostic value of HSPs.
Medicine | 2016
Sherief Abd-Elsalam; Eslam Habba; Walaa Elkhalawany; Salwa Tawfeek; Hassan Elbatea; Ferial El-Kalla; Hanan Soliman; Samah Soliman; Mohamed Yousef; Abdelrahman Kobtan; Sally El Nawasany; Sheren Awny; Ibrahim Amer; Loai Mansour; Fatma Rizk
AbstractScreening endoscopy is recommended for early detection of esophageal varices (EVs) in cirrhotic patients with portal hypertension. However, this approach is limited by its invasiveness and cost. The aim of the study was to determine if platelet count can predict the presence of EVs, especially large (grade III, IV) EVs in need of prophylactic therapy, in a cohort of Egyptian patients with liver cirrhosis. In all, 110 patients with cirrhosis were prospectively analyzed. The presence of medium or large EVs was correlated with patients’ platelet count and FIB-4. Esophageal varices were present in 87 (79.09%) patients. Among those with thrombocytopenia (platelet level below 150,000), 25.97% (20 patients) and 27.27% (21 patients) had EV grade II and EV grade III or IV, respectively. Whereas in patients in whom the platelet count was above 150,000, only 21.21% (7 patients) and 9.09% (3 patients) of patients had grade II EV and EV grade III or IV, respectively. A platelet count cut-off value of 149,000 was found to have specificity of 82% and sensitivity 39% for detection of presence of varices. A FIB-4 cut-off value of 3.175 was found to have an 83.3% sensitivity and 39.5% specificity in detecting large (grade III, IV) EVs. Platelet count is a noninvasive parameter with high accuracy for prediction of EVs. Cirrhotic patients with normal platelet counts (above 150,000), especially in financially deprived developing countries, can avoid screening endoscopy as they are at a low risk for variceal bleeding, and presence of large EVs in these patients is much less common than in those with thrombocytopenia. A 3.175 cut-off value of FIB-4 could be useful as a noninvasive predictor of large varices requiring prophylactic banding in cirrhotic patients.
Medicine | 2016
Sherief Abd-Elsalam; Abdelrahman Kobtan; Ferial El-Kalla; Walaa Elkhalawany; Sally El Nawasany; Sabry Abou Saif; Mohamed Yousef; Lobna Abo Ali; Samah Soliman; Loai Mansour; Eslam Habba; Hanan Soliman; Fatma Rizk; Mona Shehata
AbstractAs there are increasing reports of fluoroquinolone resistance on use as a first- or second-line treatment for Helicobacter pylori (H pylori), we aimed at evaluation of the efficacy and safety of nitazoxanide-based regimen as a rescue regimen in Egyptian patients whose previous traditional treatment for H pylori infection failed.In total, 100 patients from the outpatient clinic of the Tropical medicine department, Tanta University hospital in whom the standard triple therapy (clarithromycin-based triple therapy) failed were enrolled in the study. Nitazoxanide (500 mg bid), levofloxacin (500 mg once daily), omeprazole (40 mg bid), and doxycyclin (100 mg twice daily) were prescribed for 14 days. Eradication was confirmed by stool antigen for H pylori 6 weeks after the end of treatment. Among the patients enrolled in the study, 44% of patients were men and the mean age for the participants in the study was 46.41 ± 8.05, 13% of patients were smokers, and 4% of patients had a previous history of upper gastro-intestinal bleeding. A total of 94 patients (94%) completed the study with excellent compliance. Only 1 patient (1%) discontinued treatment due to intolerable side effects and 5 patients (5%) did not achieve good compliance or were lost during follow up. However, 83 patients had successful eradication of H pylori with total eradication rates 83% (95 % CI 75.7–90.3%) and 88.30% (95 % CI 81.8–94.8%) according to an intention-to-treat and per-protocol analysis, respectively. Adverse events were reported in 21% of patients: abdominal pain (6%), nausea (9%) and constipation (12%), (2%) headache, and (1%) dizziness. A 2-week nitazoxanide-based regimen is an effective and safe rescue therapy in Egyptian patients whose previous standard triple therapy has failed.
Hospital Pharmacy | 2017
Youssef K. Ahmad; Salwa Tawfeek; Mohamed Sharaf-Eldin; Hassan Elbatea; Abdelrahman Kobtan; Ferial El-Kalla; Rehab Badawi; Sherief Abd-Elsalam
Background Egypt has the largest hepatitis C virus (HCV) epidemic worldwide. Sofosbuvir is an antiviral drug acting by inhibition of the HCV NS5B polymerase. It has shown high efficacy in combination with several other drugs and has a low reported rate of side effects. Objective The aim of this prospective cohort study was to assess the safety of sofosbuvir-based treatment regimens used to treat chronic hepatitis C infections and to detect any side effects of sofosbuvir not previously reported. Methods We studied treatment side effects in 3,000 patients with chronic HCV infection treated with sofosbuvir and ribavirin for 24 weeks or treated by pegylated interferon, sofosbuvir, and ribavirin triple therapy for 12 weeks. The endpoint of the study was the end of treatment. Results Hyperbilirubinemia occurred frequently during treatment in both groups. Treatment was discontinued in 72 cases due to hepatic decompensation and drug complications; 8 of the cases had deep vein thrombosis (DVT) and 7 had cerebral ischemia. Surprisingly, 177/3,000 (5.9%) patients presented with abnormal bleeding, 85 of whom had a vasculitic skin rash. Conclusion We report the occurrence of previously nonrecorded side effects with sofosbuvir, namely DVT and bleeding disorders associated with anti-nuclear cytoplasmic antibody (ANCA)-associated vasculitis (AAV). We believe this to be the first report of sofosbuvir-induced AAV skin lesions and bleeding disorders.
European Journal of Gastroenterology & Hepatology | 2016
Elshazly Sheta; Ferial El-Kalla; Mohamed El-Gharib; Abdelrahman Kobtan; Mohammed Elhendawy; Sherief Abd-Elsalam; Loai Mansour; Ibrahim Amer
Background Globally, hepatocellular carcinoma (HCC) is the third most frequent cause of cancer-related mortality. In recent years, transarterial chemoembolization, radiofrequency ablation, and microwave ablation (MWA) have been accepted as treatment modalities for patients with surgically unresectable HCC. Aim of this work This study aimed to compare combination treatment with radiofrequency or MWA, followed by transarterial chemoembolization, and performed in a single session. Patients and methods This study was carried out on 50 patients with nonresectable single-lesion HCC, who were divided into three groups: group A included 20 patients treated by transcatheter hepatic arterial chemoembolization, group B included 20 patients treated by radiofrequency thermal ablation combined with transcatheter arterial chemoembolization, and group C included 10 patients treated by MWA combined with transcatheter arterial chemoembolization. The combined treatments were performed in a single session, with the ablation performed first. Results The total success rate in this study at 6 months following the procedure was 50% in group A, 70% in group B, and 80% in group C. Major complications were recorded in 22% of patients. The number of complications was the highest in group A. Conclusion Combined ablation with chemoembolization is superior in the treatment of nonresectable single masses larger than 4 cm. Transcatheter arterial chemoembolization and ablation can be performed safely and successfully during a single session, which has not been found to decrease the response rates to treatment. Combined treatment with MWA is more effective in terms of tumor response, and results in the same complication rate as with radiofrequency, but less than chemoembolization alone.
Journal of Medical Virology | 2018
Hassan El Batae; Ibrahim Amer; Abdelrahman Kobtan; Shimaa M. Saied; Amany A. Ghazy; Ferial El-Kalla; Shimaa El Sharawy
Hepatitis C virus (HCV) constitutes a global public health problem in Egypt, as it has the highest worldwide prevalence. This study aimed at determining the seroprevalence of HCV among the newcomer students of Kafrelsheikh University, Egypt.
Infectious disorders drug targets | 2018
Taher El-Demerdash; Mohamed Yousef; Sherief Abd-Elsalam; Amal Helmy; Abdelrahman Kobtan; Asem Ahmed Elfert
BACKGROUND AND AIMS Hepatitis viruses are not transmitted via gastrointestinal endoscopy except if there are any mistakes in sterilization and disinfection of the endoscope that disrupt the infection control measures. So we aimed to measure the risk of transmitting HCV by GI endoscopy at department of Tropical Medicine and infectious Diseases, in a major University hospital in Egypt. METHODOLOGY Our study was conducted on four hundred patients with exclusion of those with HCV, HBV, and/or HIV positive antibodies. An ethical committee approval and a given consent were taken prior to enrollment on the study. Our patients are grouped into the following; 100 patients performed upper GI endoscopy without biopsy as group I; 100 patients performed upper GI endoscopy with biopsy as group II; 100 patients performed lower GI endoscopy without biopsy as group III and 100 patients performed lower GI endoscopy with biopsy as group IV. HCV antibodies were done 3 months after endoscopy with exclusion of other risks of HCV infection by a detailed questionnaire. RESULTS Only one case reported positive after 3 months of procedure, it was after colonoscopy with biopsy using reusable forceps. CONCLUSIONS Strict infection control measures of the GI endoscopes despite being effective in the preventing HCV transmission, the reuse of disinfected biopsy forceps may be associated with a risk of transmission. So we recommend using disposable forceps for every patient to omit the risk of HCV transmission during endoscopy.
Immunological Investigations | 2018
Nadia Elwan; Mohamed L. Salem; Abdelrahman Kobtan; Ferial El-Kalla; Loai Mansour; Mohamed Yousef; Ashraf Al-Sabbagh; Abdel-Aziz A. Zidan; Sherief Abd-Elsalam
ABSTRACT Background: Hepatocellular carcinoma (HCC) is the 3rd most common cause of cancer-related death worldwide. It has evolved different immune escape mechanisms, which might include emergence of lymphoid and myeloid regulatory cells. Aim of this work: To determine the numbers of Myeloid-derived suppressor cells (MDSCs) in peripheral blood and ascitic fluid in cirrhosis and HCC and their relation to IFN-γ and α-fetoprotein (α-FP). Patients and methods: Sixty individuals were enrolled in this study; forty cirrhotic patients with ascites; twenty without HCC (Group I), and twenty with HCC (group II) as well as twenty healthy individuals as a control group (group III). The phenotype and numbers of MDSCs were analyzed in peripheral blood of all the individuals and ascitic fluid of the patients using flow cytometry. Intracellular IFN-γ and serum alfa-fetoprotein were measured. Results: Significant increases in the relative and the mean number of peripheral blood MDSCs were found in the cirrhosis and HCC groups than in the control group, with the HCC group showing the highest number. MDSC count was negatively correlated with IFN-γ levels, while α-FP was positively correlated with MDSC% in the HCC group. MDSC count was low in ascitic fluid of both HCC and cirrhosis groups with no significant difference between the 2 groups. Conclusion: A high frequency of MDSCs was detected in the peripheral blood of cirrhotic and HCC patients, indicating presence of immunosuppressive arms. These cells could be targeted to develop a new effective immunotherapy or an adjuvant to current therapies.
Hepatic Medicine : Evidence and Research | 2018
Ahmed Khaled Tawfik; Amal Helmy; Mohamed Yousef; Sabry Abou-Saif; Abdelrahman Kobtan; Eman Asaad; Sherief Abd-Elsalam
Objectives The aim of the work was to assess the level of copeptin as a surrogate marker predicting the severity of liver diseases and its major complications. Patients and methods This was a cross-sectional study that included 40 patients and 10 controls and was performed in Tanta University Hospital between June 2016 and November 2016. The studied cases were divided into five groups: group I (10 patients): compensated cirrhosis; group II (10 patients): cirrhosis with gastrointestinal hemorrhage due to portal hypertension; group III (10 patients): cirrhosis with hepatorenal syndrome; group IV (10 patients): cirrhosis with liver cell failure; and group V (10 controls): normal healthy individuals. Results Regarding serum copeptin in the studied groups, copeptin showed a significant decrease in group I vs group II‚ group I vs group III, and group I vs group IV; and there was a significant increase in group II vs group III‚ group II vs group IV‚ group II vs control‚ group III vs control, and group IV vs control. No significance was detected between group I vs control and group III vs group IV. Conclusions Copeptin is a novel marker for the determination of prognosis of liver cirrhosis. There is significant association between serum level of copeptin and complications of liver cirrhosis.