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: The present study was designed to investigate whether H2S can protect testicular germ cells against heat exposure induced injury and the underlying mechanisms.', 'It was found that all three H2S generating enzymes, cystathionine β-synthase (CBS), cystathionine γ-lysase (CSE), and 3-mercaptopyruvate sulfurtransferase (3 MST), were expressed in mouse testicular tissue. Three episodes of heat exposure (42 °C, 30 min/day, 3 days) significantly decreased endogenous H2S production and down-regulated the expression of CBS and CSE in testes. In primary cultured testicular germ cells, exogenous application of NaHS (an H2S donor) attenuated heat stress (42 °C, 30 min) induced cell death and apoptosis. This was mediated by the inhibitory effects of H2S on cytochrome C release and the ratio of the Bax/Bcl-2. NaHS also improved mitochondrial function by decreasing oxygen consumption and increasing ATP production. NaHS treatment also stimulated SOD activity and reduced ROS production.

Answer: 1


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: Prior work shows that palliative homecare services reduce the subsequent need for hospitalizations and emergency services; however, no study has investigated whether this association is present for emergency department visits of high acuity or whether it only applies to low-acuity emergency department visits.', 'To examine the association between palliative versus standard homecare nursing and the rate of high-acuity and low-acuity emergency department visits among cancer decedents during their last 6\u2009months of life.', 'This is a retrospective cohort study of end-of-life homecare patients in Ontario, Canada, who had confirmed cancer cause of death from 2004 to 2009. A multivariable Poisson regression analysis was implemented to examine the association between the receipt of palliative homecare nursing (vs standard homecare nursing) and the rate of high- and low-acuity emergency department visits, separately.', 'There were 54,743 decedents who received homecare nursing in the last 6\u2009months of life. The receipt of palliative homecare nursing decreased the rate of low-acuity emergency department visits (relative rate\u2009=\u20090.53, 95% confidence interval\u2009=\u20090.50-0.56) and was significantly associated with a larger decrease in the rate of high-acuity emergency department visits (relative rate\u2009=\u20090.37, 95% confidence interval\u2009=\u20090.35-0.38).

Answer:
1