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https://www.selleckchem.com/products/lithium-chloride.html Introduction An increasing number of newly diagnosed resectable gastric cancer (GC) patients are over 85 years of age. However, studies on surgical treatment in these patients are limited. This study aimed to explore the prognosis of a large sample of the oldest old GC patients receiving surgery.Methods A total of 2914 oldest old patients with stage I-III GC were included in the linked Surveillance, Epidemiology, and End Results (SEER) database from 2006 to 2015. Based on their treatment, we assigned these patients to the surgery and no surgery groups. We used propensity score matching (11) to balance the baseline characteristics. The Kaplan-Meier method was used for the survival analysis. Multivariate Cox regression analysis was used to analyse the independent risk factors.Results After propensity score matching, the median overall survival (OS) times in the surgery and no surgery groups were 24.0 (95% CI 20.3-27.7) and 4.0 (95% CI 3.5-4.5) months, respectively (p less then .01). Age, ***, stage, histological type, and treatment with surgery and chemotherapy were independent risk factors for OS in the oldest old patients with GC. In total, 19% of the oldest old patients with GC died from causes unrelated to cancer.Conclusions The current large-scale study demonstrated that the oldest old patients with stage I-III GC could benefit from elective surgery.Objective Clinical diagnostics often requires the detection of multiple bacterial species in limited clinical samples with a single DNA extraction method. This study aimed to compare the bacterial DNA extraction efficiency of two lysis methods automated with the MagNA-Pure LC instrument. The samples included five oral bacterial species (three Gram-positive and two Gram-negative) with or without human saliva background. Methods Genomic DNA (gDNA) was extracted from bacterial cultures by bead-beating lysis (BMP) or chemical lysis (MP), followed by automated puri

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