Numerous plant genera have a history including frequent hybridisation and polyploidisation (allopolyploidisation), which means that their phylogeny is a network of reticulate evolution that cannot be accurately depicted as a bifurcating tree with a single tip per species. The genus Betula, which contains many ecologically important tree species, is a case in point. We generated genome-wide sequence reads for 27 diploid and 36 polyploid Betula species or subspecies using restriction site associated DNA (RAD) sequences. These reads were assembled into contigs with a mean length of 675 bp. We reconstructed the evolutionary relationships among diploid Betula species using both supermatrix (concatenation) and species tree methods. We identified the closest diploid relatives of the polyploids according to the relative rates at which reads from polyploids mapped to contigs from different diploid species within a concatenated reference sequence. By mapping reads from allopolyploids to their different putative diploid relatives we assembled contigs from the putative sub-genomes of allopolyploid taxa. We used these to build new phylogenies that included allopolyploid sub-genomes as separate tips. This approach yielded a highly evidenced phylogenetic hypothesis for the genus Betula, including the complex reticulate origins of the majority of its polyploid taxa. Our phylogeny divides the genus into two well supported clades, which, interestingly, differ in their seed-wing morphology. We therefore propose to split Betula into two subgenera.Methyl parathion hydrolase (MPH) hydrolyses methyl parathion efficiently and specifically. Herein, we produced MPH from Plesiomonas sp. M6 using a Pichia pastoris multi-copy expression system. The original signal peptide sequence of the target gene was removed, and a modified coding sequence was synthesised. Multi-copy expression plasmids containing MPH were constructed using pHBM905BDM, and used to generate recombinant strains containing 1, 2, 3 or 4 copies of the MPH gene. The results showed that a higher target gene copy number increased the production of recombinant MPH (MPH-R), as anticipated. The expression level of the recombinant strain containing four copies of the MPH gene was increased to 1.9 U/ml using 500 ml shake flasks, and the specific activity was 15.8 U/mg. High-density fermentation further increased the target protein yield to 18.4 U/ml. Several metal ions were tested as additives, and Ni2+, Co2+ and Mg2+ at a concentration of 1 mM enhanced MPH-R activity by 196%, 201% and 154%, respectively. Enzyme immobilisation was then applied to overcome the difficulties in recovery, recycling and long-term stability associated with the free enzyme. Immobilised MPH-R exhibited significantly enhanced thermal and long-term stability, as well as broad pH adaptability. In the presence of inhibitors and chelating agents such as sodium dodecyl sulphate (SDS), immobilised MPH-R displayed 2-fold higher activity than free MPH-R, demonstrating its potential for industrial application.
  Patients frequently use treatments complementary to standard primary care. This prospective cohort-study examined the use, benefits, and safety of Craniosacral Therapy (CST).
 
  Consecutive out-patients utilizing CST from 2015 to 2019 were asked to provide anonymized data on symptom intensity, functional disability, and quality of life before and after treatment using an adapted 11-point numerical rating scale (NRS) version of the Measure Yourself Medical Outcome Profile (MYMOP). Treatment expectations were assessed as were concurrent therapies/medication and safety. Mean differences were analyzed using paired sample t-tests with 95 % confidence intervals (CI), predictors of treatment response using linear regression modelling.
 
  CST therapists submitted 220 patient records (71.4 % female) including 15.5 % infants and toddlers, 7.7 % children, and 76.8 % adolescents and adults. Patients received on average 7.0 ± 7.3 CST sessions to treat 114 different, acute and chronic conditions.  https://www.selleckchem.com/products/Carboplatin.html  Symptom intensity signific adults.
  To assess attitudes, beliefs and knowledge towards medical cannabis (MC) among Greek nursing students by year of study and undergraduate/postgraduate status.
 
  294 (229 undergraduate and 65 postgraduate) students participated in this survey. Descriptive and inferential statistics (Pearson's chi-squared, t-test) were applied using SPSS.24 (p ≤ 0.05).
 
  Participant mean age (SD) was 23.1(6.6) years and 80.0 % of the study cohort was female. Senior undergraduate participants (3rd/4th year of study) reported more positive attitudes about MC benefits for mental health treatment compared to junior participants (1st/2nd year) (p = 0.017). Junior participants were more inclined to believe there are serious physical health risks associated with cannabis use (p = 0.038). Undergraduates, more than postgraduates, expressed a need for MC education and training for academic and practice purposes (p = 0.015); and, that there are physical and mental health risks associated with cannabis use (p = 0.007). Additionally, undergraduate nursing students were less likely than postgraduates to report knowledge about MC effectiveness for a variety of medical conditions (p ≤ 0.047); personal cannabis use for recreational purposes (p < 0.001); and, medical (p = 0.018) or recreational (p < 0.001) cannabis use among family members. The vast majority of all nursing students surveyed reported the need for formal education about MC (i.e., theoretical, clinical, laws and regulations) as part of their studies.
 
  Greek nursing student attitudes, beliefs and knowledge about MC vary according to year of study and undergraduate/postgraduate status. From this study, formal education on MC is recommended for Greek nursing students.
 Greek nursing student attitudes, beliefs and knowledge about MC vary according to year of study and undergraduate/postgraduate status. From this study, formal education on MC is recommended for Greek nursing students.Previous research has implicated the ventral pole of the hippocampus in regulating anxiety. However, most rat studies examining the specific contribution of the ventral hippocampus have utilized techniques that have nonspecific effects and/or create nonreversible damage to the region. The present study sought to characterize the role of ventral hippocampal CaMKIIα-expressing neurons in modulating anxiety- and fear-like behavior during exposure to a variety of threatening stimuli. Five weeks prior to testing, adult male Long-Evans hooded rats received ventral hippocampal viral-vector infusions expressing either AAV8-CaMKIIα-hM4D-mCherry (DREADD) or AAV8-CaMKIIα-EGFP (GFP). DREADD transfection allowed for the specific, noninvasive and temporary inhibition of the ventral hippocampus (vHC) immediately before threat presentation. Rats were evaluated for behaviors congruent with anxiety- or fear-like defensive states during testing in the elevated plus-maze (EPM) and light-dark test (LDT), or post footshock freezing and footshock-induced contextual freezing, respectively.