Eugenol: A New Option in Combination Therapy with Sorafenib for the Treatment of Undifferentiated Thyroid Cancer.

Thyroid cancer (TC) is the most common endocrine malignancy. Thyroidectomy and radiotherapy are common treatment modalities for patients with undifferentiated TC (UTC), and sorafenib is usually recommended to prevent a recurrence. However, malignant cells may evade chemotherapy-induced apoptosis, and combination therapy was developed to achieve better outcomes. This study investigated whether eugenol in combination with sorafenib was more effective than either substance individually in triggering apoptosis in the UTC. The IC50 of sorafenib and eugenol was determined in a UTC cell line (8305C) by MTT assay, and their synergistic effect in combination therapy was investigated. Flow cytometry was used to evaluate the rate of apoptosis in treated cells. To confirm that cell death occurred through apoptosis, immunoblotting was used to determine the relative cleavage of caspase-8 and caspase-9. The IC50 of sorafenib was 20 µM, and that of eugenol was 2100 µM. The sorafenib-eugenol combination (1:105) showed synergistic effects at concentrations equal to or less than their IC50. The rate of apoptosis induction was higher in cells treated with eugenol or the eugenol-sorafenib combination compared to sorafenib-treated cells. The relative intensity of cleaved/un cleaved forms of caspase-8 increased in eugenol-treated cells compared to sorafenib-treated cells.Sorafenib and eugenol at concentrations equal to or less than their IC50 had a synergistic effect in 8305C cells. The most potent apoptotic effect was achieved with sorafenib and eugenol at their IC50. Lower doses of sorafenib could be used with eugenol to improve its efficacy while reducing its side effects.

Frequency of rotavirus and adenovirus gastroenteritis among children in shiraz, iran.

BACKGROUND: Viral pathogens are the main cause of acute gastroenteritis in developed and developing countries. Rotavirus and adenovirus are the two important agents associated with hospitalization for diarrhea especially in children. Limitation and control of diarrhea as a costly disease must be considered in national health programs. OBJECTIVES: Epidemiological studies on viral diarrhea and collecting data for rotavirus and adenovirus prevalence, as two important viral agents of gastroenteritis, are valuable for planning of a prospective program. MATERIALS AND METHODS: 827 stool samples of pediatrics patients with gastroenteritis who were admitted to Dastgheib Hospital, Shiraz, Iran, from September 2008 to February 2010 were tested for presence of rotavirus and adenovirus using the EIA method. A demographic and clinical study was performed to determine the relationship between viral infection and clinical outcomes of patients. RESULTS: Rotavirus was identified in 347 patients out of 827 (42%), adenovirus was detected in 76 (9%) of samples and 34 (4%) of patients had rotavirus-adenovirus co-infection. Diarrhea was the most common symptom in viral infected patients. CONCLUSIONS: Given the non-specific symptoms of these viruses and the high prevalence of viral diarrhea in our region, more laboratories should be equipped for virus detection and vaccination might be considered as a prevention strategy.