PubMed · 7265152
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W E Farnsworth. 1981. Teaching biochemistry.. https://doi.org/10.1097/00001888-198108000-00014
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The stria vascularis (SV) is an essential component of the inner ear that regulates the ionic environment required for hearing. SV degeneration disrupts cochlear homeostasis, leading to irreversible hearing loss, yet a comprehensive understanding of the SV, and consequently therapeutic availability for SV degeneration, is lacking. We developed a whole-tissue explant model from neonatal and mature mice to create a platform for advancing SV research. We validated our model by demonstrating that the proliferative behavior of the SV in vitro mimics SV in vivo. We also provided evidence for pharmacological experimentation by investigating the role of Wnt/β-catenin signaling in SV proliferation. Finally, we performed single-cell RNA sequencing from in vivo neonatal and mature mouse SV and surrounding tissue and revealed key genes and pathways that may play a role in SV proliferation and maintenance. Together, our results contribute new insights into investigating biological solutions for SV-associated hearing loss.
Cyclopenta[g]quinazoline-based inhibitors of thymidylate synthase (TS) possess a chiral centre at the 6-position of the molecule. The effect of this chirality on the inhibition of TS was investigated by synthesising compounds 6S-1a-c, 6R-1a-c. It was shown, in particular with the diastereoisomers 6S-1c, 6R-1c, that the inhibitory activity against TS is mainly due to the 6S diastereoisomer rather than the 6R diastereoisomer, which is virtually inactive.
Evidence-based use of clinical biochemistry integrates into clinical decision-making the best research evidence with the clinical expertise of the physician and the expectations and concerns of the patient. The best research evidence for the clinical use of a biochemical test should be appraised in close collaboration between clinicians and specialists in clinical biochemistry, as familiarity with both the clinical problem and the analytical performance of the test is necessary. At present, it is difficult to ensure an evidence-based use of biochemical tests. More and methodologically better studies of the clinical value of biochemical tests are needed, and methods should be developed that make it possible to assess the results of such studies by systematic reviews and meta-analyses. Clinical biochemistry is an interdisciplinary specialty, and papers on the clinical value of biochemical tests are published in a vast number of journals of different clinical specialties as well as those of clinical biochemistry. It is thus almost impossible to keep abreast of the subject. The establishment of a system for literature surveillance focusing on methodologically sound studies of the clinical value of biochemical tests would be advantageous. Lastly, training and education on how to find and assess the existing evidence for the clinical use of biochemical tests are needed.