Given a passage classify if the passage has a definite objective/aim/goal or not. Output '1' if the passage has a defininte objective/aim/goal and output '0' if the passage does not have a definite objective/aim/goal.
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Question: Centrosome orientation toward the leading edge of migrating cells depends on dynein and microtubules (MTs), as well as a number of signaling factors at the leading edge. However, centrosomes are maintained at the cell center during orientation in fibroblasts, suggesting that factors working at sites other than the leading edge may also be involved.', 'In a search for factors that function with dynein in centrosome orientation, we found that the polarity protein Par3 associated with dynein and that knockdown of Par3 inhibited centrosome orientation by disrupting the position of the centrosome at the cell center; this disrupted centrosome positioning is the same phenotype as that observed with dynein inhibition. Par3 associated with dynein through its N-terminal dimerization and PDZ1 domains and interacted specifically with dynein light intermediate chain 2 (LIC2). siRNA knockdown of LIC2, but not LIC1, or overexpression of LIC2 or the N-terminal domain of Par3, also inhibited centrosome orientation by disrupting centrosome position. In wound-edge fibroblasts, Par3 specifically localized to cell-cell contacts where it overlapped with MT ends and dynein puncta in a LIC2-dependent fashion. Live imaging showed that MTs exhibited increased pausing at cell-cell contacts compared to the leading edge and that this elevated pausing was dependent on Par3 and LIC2.

Answer: 0


Question: Poor condition at operation determined by the physiologic POSSUM score is related to postoperative mortality and morbidity of colorectal cancer surgery. This study was designed to analyze the relationship between condition of patients with colorectal cancer at operation and long-term overall survival.', 'A total of 542 patients survived a radical resection for Stages I, II, or III colorectal cancer. Physiologic POSSUM score at surgery, exclusive of age, was calculated for all patients. Mean physiologic POSSUM score was used as cutoff point to determine low-risk and high-risk group patients. A Cox proportional hazard analysis was performed to study the effect of low-risk and high-risk group on overall survival and to identify independent risk factors.', 'Five-year overall survival was significantly higher in low-risk group patients than in high-risk group patients (low-risk group 66.6 percent vs. high-risk group 48.5 percent; P < 0.001). Differences in overall survival also were found when patients in Stages I, II, and III were analyzed separately. Risk factors for overall survival were advanced stage of disease, poor tumor differentiation, mucinous adenocarcinoma, older than age 70 years, and poor condition of the patient at time of operation.

Answer: 1


Question: To examine whether connective tissue growth factor(CTGF) induces the production of fractalkine(FLK) by glomerular mesangial cells of rats, and explore the mechanism of signal pathway of CTGF actions.', 'The mRNA expression of FLK was analyzed by RT-PCR in cultured mesangial cells stimulated by CTGF. The protein of FLK in the supernatants of cells was determined by ELISA. The chemotactic effect of the supernatants on monocytes was assessed by the in vitro chemotaxis assay. The phosphorylation of p42/44 MAPK was assessed by Western blot.', 'Treatment of the cells with CTGF enhanced the mRNA expression of FLK and concentration of FLK in the supernatants. Pretreatment of the supernatants of CTGF-treated cells with anti-FLK antibodies partially inhibited the chemotactic effect of the supernatants on monocytes. CTGF increased the p42/44MAPK phosphorylation. Pretreatment of the cells with PD98059 or UO126, inhibitors of phosphorylated p42/44 MAKP, decreased the CTGF-induced expression of phosphorylated p42/44 MAPK and concentration of FLK in supernatants.

Answer:
1