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Therefore, this study is believed to give crucial information on the current status and future direction of waste biomass utilization so as to accomplish the quest towards green economy.Key Points • Huge biomass potential and dramatically increase in R&amp;D trends on waste biomass.• Selection of appropriate waste biomass valorization techniques. • Development of efficient and feasible waste biomass transformation technology. • Coproduction of low-value, high-volume and high-value, low volume products.As petro-based production generates numerous environmental impacts and their associated technological concerns, bio-based production has been well recognized these days as a modern alternative to manufacture chemical products in a more renewable, environmentally friendly, and sustainable manner. Herein, we report the development of a microbial bioprocess for high-level and potentially economical production of 3-hydroxyvalerate (3-HV), a valuable special chemical with multiple applications in chemical, biopolymer, and pharmaceutical industries, from glycerol, which can be cheaply and renewably refined as a byproduct from biodiesel production. We used our recently derived 3-HV-producing Escherichia coli strains for bioreactor characterization under various culture conditions. In the parental strain, 3-HV biosynthesis was limited by the intracellular availability of propionyl-CoA, whose formation was favored by anaerobic conditions, which often compromised cell growth. With appropriate strain engineering, we demhe most effective bio-based production of 3-HV from structurally unrelated carbons to date, but also highlights the importance of integrated strain engineering and bioprocessing strategies to enhance bio-based production.Key points • TCA cycle engineering was applied to enhance 3-HV biosynthesis in E. coli. • Effects of oxygenic conditions on 3-HV in E. coli biosynthesis were investigated. • Bioreactor characterization of 3-HV biosynthesis in E. [https://www.selleckchem.com/products/triparanol-mer-29.html Triparanol] coli was performed.Who discovered the cardiovascular and capillary systems? When students in advanced semesters are asked about historical matters that have decisively influenced the path to present day medicine, as a rule no answer or a false answer is forthcoming. Whoever wants to understand scientific thinking and action, cannot do better than to grapple with the historical and cultural developments in medicine; however, more than any other science the natural sciences and medicine provide evidence that new ways and knowledge must be consistently sought for the benefit of patients. The aim of this article is to make a contribution to remembering how the cardiovascular system was discovered and the cultural and historical importance of the heart. Last but not least, however, the article aims to convey the impression of the huge personal sacrifice, including one's own life, and the stony path which led to the acquisition of this knowledge.BACKGROUND The aim of this study was to analyze the risk factors for vasovagal reaction (VVR) in manual femoral sheath removal after percutaneous coronary intervention and to discuss methods for the prevention and control of VVR. METHODS The data of 455 patients who underwent percutaneous intervention in four interventional centers during a period of 30&nbsp;months were retrospectively analyzed. Patients were divided into a VVR group and a control group according to whether VVR developed. The clinical data of all patients were analyzed using univariate and multivariate logistic regression analysis to examine VVR -related factors. RESULTS A&nbsp;total of 455 patients underwent 464 manual femoral sheath removal operations, of whom 12&nbsp;developed VVR (2.59%). Of these 12&nbsp;VVR patients, one had VVR during and 11 had VVR after the intervention. There were no statistically significant differences between the two groups in age, body mass index, gender, time of sheath removal, proportions of patients with hypertension, diabetes, and hyperlipemia, laboratory values of hemoglobin a1c, and ejection fraction (p &gt; 0.05). Compared with the control group, use of nitrates was the only risk factor with a significant correlation with VVR (p = 0.012). CONCLUSION In manual femoral sheath removal, the use of nitrates is the most important risk factor for the occurrence of VVR after percutaneous intervention.OBJECTIVE The aim of this study was to explore the relationship between arrhythmia-associated or electrocardiogram (ECG)-associated common variants and PR interval, QRS duration, QTcorrected, and heart rate in a Chinese cohort. METHODS We studied the association between 26&nbsp;single-nucleotide polymorphisms (SNPs) and digital ECG data from 379 unrelated Han Chinese individuals collected in an epidemiological survey in Beijing. All subjects were 45&nbsp;years of age or older and were free of cardiovascular diseases and diabetes. The SNPs were genotyped in a&nbsp;multiplex panel using the Sequenom MassARRAY platform. RESULTS Missense variant T66A (Thr66Ala, rs4074536) of the CASQ2 gene, which was previously reported to be associated with QRS complex in European populations, was significantly associated with PR interval prolongation in our sample (padjusted = 0.006, betaadjusted = 3.983 ms). A two-tailed t&nbsp;test showed that the CC genotype (n = 86) had a&nbsp;significantly longer PR interval (162.9 ± 19.4 ms) than the non-CC genotypes (n = 288, PR interval 154.6 ± 20.9 ms), with a&nbsp;remarkable difference of 8.2 ms between the groups (p = 0.001). Interestingly, this association between T66A of CASQ2 and PR interval was more evident in females (padjusted = 0.007, betaadjusted = 5.723 ms) than in males (padjusted = 0.177, betaadjusted = 2.725 ms). In addition, rs3822714 in the HAND1 locus might be associated with QRS duration (padjusted = 0.034, betaadjusted = -2.268 ms). CONCLUSION We identified a&nbsp;novel signal of an association between the CC genotype of T66A in CASQ2 and PR interval prolongation in a Chinese population, particularly in females. This association deserves further exploration given its possible effects on calcium handling in cardiac electrophysiology.