The other cancer mouse model (Hep-2) was resistant to radiotherapy.\n\nConclusions:The results indicate that cell structural changes after radiotherapy have a significant influence on ultrasound spectral parameters. This provides a foundation for future investigations regarding the use of ultrasound in cancer patients to individualize treatments noninvasively based on their responses to specific interventions.”
“It is currently thought that treatment for spinal cord injury (SCI) will involve a
combined pharmacological and biological approach; however, testing their efficacy in animal models of SCI is time-consuming and requires large animal cohorts. MK-2206 chemical structure For this reason we have modified our myelinating cultures as an in vitro model of SCI and studied its potential
as a prescreen for combined therapeutics. This culture comprises dissociated rat embryonic spinal cord cells plated onto a monolayer of astrocytes, which form myelinated axons interspaced with nodes of Ranvier. After cutting the culture, an initial cell-free area appears persistently devoid of neurites, accompanied over time by many features of SCI, including demyelination and reduced neurite density adjacent to the lesion, and infiltration of microglia and reactive astrocytes into the lesioned area. We tested a range of concentrations of the Rho inhibitor C3 transferase (C3) and ROCK Nocodazole purchase inhibitor Y27632 that have been shown to promote SCI repair in vivo. C3 promoted neurite extension into the lesion and enhanced neurite density in surrounding areas but failed to induce
remyelination. In contrast, while Y27632 did not induce significant neurite outgrowth, myelination adjacent to the lesion was dramatically enhanced. The effects of the inhibitors were concentration-dependent. Combined treatment with C3 and Y27632 had additive affects with an enhancement of CX-6258 supplier neurite outgrowth and increased myelination adjacent to the lesion, demonstrating neither conflicting nor synergistic effects when coadministered. Overall, these results demonstrate that this culture serves as a useful tool to study combined strategies that promote CNS repair. (C) 2011 Wiley Periodicals, Inc.”
“Objective To test the hypothesis that red blood cell (RBC) transfusions increase the risk of necrotizing enterocolitis (NEC) in premature infants, we investigated whether the risk of “transfusion-associated” NEC is higher in infants with lower hematocrits and advanced postnatal age.\n\nStudy design Retrospective comparison of NEC patients and control patients born at <34 weeks gestation.\n\nResults The frequency of RBC transfusions was similar in NEC patients (47/93, 51%) and control patients (52/91, 58%). Late-onset NEC (>4 weeks of age) was more frequently associated with a history of transfusion(s) than early-onset NEC (adjusted OR, 6.7; 95% CI, 1.5 to 31.2; P = .02).