Altered global methylation of DNA: an epigenetic difference in susceptibility for lung cancer is associated with its progression

Alterations in global DNA methylation have been observed in many cancers, but whether such alterations represent an epigenetic difference in susceptibility for the disease is unknown. The status of global DNA methylation also has not been reported in intact or specific types of cells involved in the carcinogenic process. To address these issues in lung carcinogenesis, we evaluated the status of global DNA methylation by using a monoclonal antibody specific for 5-methylcytosine (5-mc) in randomly selected lung specimens of 60 cigarette smokers who developed squamous cell carcinoma (SCC) and 30 cigarette smokers who did not. 5-mc immunostaining scores of DNA of SCC (0.61 +/- 0.42) and associated hyperplastic lesions (0.82 +/- 0.27) was significantly lower than those of DNA of histologically normal bronchial epithelial cells (0.99 +/- 0.52) and hyperplastic lesions (1.2 +/- 0.22) of noncancer specimens. The ratio of 5-mc scores between SCC and matched uninvolved bronchial epithelial cells was significantly associated with advanced stage and size of the tumor. The results suggest that alteration in global DNA methylation is an important epigenetic difference in susceptibility for the development of lung cancer. The reduced global DNA methylation in SCC compared with epithelial hyperplasia and its association with tumor size and disease stage is suggestive of its involvement in the progression of SCC. The results also indicate that normal methylation of DNA in epithelial hyperplastic lesions may prevent the transformation of these lesions to invasive cancer. If these results are confirmed, the status of DNA methylation in early lesions such as epithelial hyperplasia could be used to identify smokers who are at risk for the development of SCC.     

Comparative Evaluation of the Therapeutic Efficacy and Safety of Injected Histaglobulin versus Autologous Serum Therapy in Chronic Urticaria

BACKGROUND: Urticaria affects 0.5 to 1 percent of the population at any given time. Treatments include nonsedative antihistamines, autologous serum therapy, and injected histaglobulin. OBJECTIVE: This study sought to compare the therapeutic efficacy and safety of injected histaglobulin with autologous serum therapy in chronic urticaria. METHODS: This was a hospital-based prospective study performed in the Department of Dermatology, Venereology, and Leprology at Guru Gobind Singh Medical College and Hospital in Faridkot, India. A total of 96 patients with chronic idiopathic urticaria were enrolled after applying inclusion and exclusion criteria and were divided into two groups of 48 patients each using an envelope method. Autologous serum skin tests were performed in each patient irrespective of their group assignment. Group A then received injected histaglobulin and Group B received autologous serum therapy (AST). Patient were evaluated using the Urticaria Activity Score (UAS) every week for six weeks, with follow-up conducted at three and six weeks after the completion of treatment. The Chronic Urticaria Quality of Life questionnaire was used to assess the quality of life of the study participants. RESULTS: Out of the 96 initially enrolled patients, 62 completed the six weeks of treatment and two follow-up visits. Twenty patients dropped out due to remission and 14 patients left the study for other reasons. Reductions in UAS values occurred in both the groups by the end of follow-up but were more significant in Group A. Improvement in quality of life scores was also greater in Group A. Recurrence occurred in both groups after treatment cessation but was less common in Group A. CONCLUSION: Both treatments were validated for treating chronic urticaria; however, injected histaglobulin showed statistically more consequential results than AST.     

Complications of PTFE Mesh at the Diaphragmatic Hiatus

Paraesophageal hernia repair has been associated with a recurrence rate of up to 42%. Thus, in the last decade, there has been increasing interest in the use of mesh reinforcement of the hiatal repair. Polytetrafluoroethylene (PTFE) is one of the materials that have been used for this purpose, as it is thought to induce minimal tissue reaction. We report two cases in which complications specific to the use of PTFE mesh in this location developed over time. In the first patient, a gastrectomy was required to remove a large PTFE mesh which had eroded into the esophagogastric junction and gastric cardia. The second patient experienced severe dysphagia resulting from a stricture caused by the implant, requiring removal of the mesh. Although such complications have only rarely been reported, the severity and consequences of these incidents, as reported in the literature and in light of our observations, suggest that an alternative to PTFE should be considered for crural reinforcement during paraesophageal hernia repair.     

Anaphylaxis to Pegylated Liposomal Doxorubicin: A Case Report

Liposomal doxorubicin is used for the treatment of various cancers like epithelial ovarian cancers, multiple myeloma and sarcomas. We report the first case of anaphylaxis to pegylated liposomal doxorubicin.     

Video. Laparoscopic repair of congenital bilateral Morgagni hernia

Morgagni hernia is a rare type of congenital diaphragmatic hernia found in the anterior aspect of the diaphragm. It typically presents in the pediatric population and rarely is diagnosed in adults. Only 3% of diaphragmatic hernias are the Morgagni type, and only 4% of these are found to present bilaterally. Surgical repair of Morgagni hernia has been performed through various approaches including open, laparoscopic, thoracotomy, and video-assisted thoracoscopic surgery (VATS), all with and without mesh. The optimal method of surgical repair is not known due to the rarity of this condition and the limitations of setting up a prospective, randomized trial to evaluate the different methods. Laparoscopic repair with mesh has been described with good short-term results. Few case reports exist in the world literature describing laparoscopic repair of a bilateral Morgagni hernia with mesh. At the University of Washington, the authors present a video showing their technique for laparoscopic repair of a congenital, bilateral Morgagni type hernia with mesh.     

Evaluation and treatment of laryngopharyngeal reflux symptoms

Gastroesophageal reflux disease (GERD) is a well-defined disease characterized by symptoms or complications caused by an abnormal amount of GER, which is a retrograde movement of gastric contents into the esophagus. Laryngopharyngeal reflux (LPR) is a subset of GERD and given its own identity, because the main symptomatic regions are the larynx and pharynx. Accurate diagnosis and effective treatment of LPR has been challenging. Much research has been dedicated to the elucidation of its complex pathophysiology and the development of accurate diagnostic modalities and effective treatment. Considerable advancements have been made in the evaluation and treatment of LPR.