Notes
![]() ![]() Notes - notes.io |
Additionally, dry binder addition proved successful for creation of high quality granules.Introduction A solid body of preclinical evidence shows that glucagon-like peptide-1 receptor (GLP-1R) agonists attenuate the effects of substance use disorder related behaviors. The mechanisms underlying these effects remain elusive. In the present study, we hypothesized that GLP-1R activation modulates dopaminetransporter (DAT) and thus dopamine (DA) homeostasis in striatum. This was evaluated in three different experiments two preclinical and one clinical. Methods Rat striatal DA uptake, DA clearance and DAT cell surface expression was assessed following GLP-1 (7-36)-amide exposure in vitro. DA uptake in mice was assesed ex vivo following systemic treatment with the GLP-1R agonist exenatide. In addition, DA uptake was measured in GLP-1R knockout mice and compared with DA-uptake in wild type mice. In healthy humans, changes in DAT availability was assessed during infusion of exenatide measured by single-photon emission computed tomography imaging. Results In rats, GLP-1 (7-36)-amide increased DA uptake, DA clearance and DAT cell surface expression in striatum. In mice, exenatide did not change striatal DA uptake. In GLP-1R knockout mice, DA uptake was similar to what was measured in wildtype mice. In humans, systemic infusion of exenatide did not result in acute changes in striatal DAT availability. Conclusions The GLP-1R agonist-induced modulation of striatal DAT activity in vitro in rats could not be replicated ex vivo in mice and in vivo in humans. Therefore, the underlying mechanisms of action for the GLP-1R agonists-induced efficacy in varios addiction-like behavioural models still remain.Objective To evaluate the ability of heart rate (HR) and HR difference during head-up tilt test (HUTT). To predict clinical improvement related to metoprolol treatment in children and adolescents with postural tachycardia syndrome (POTS). Study design This was a retrospective cohort study. A total of 53 subjects (27 males, aged 6-12 years old, mean age 11.79 ± 1.50 years old) with POTS treated with metoprolol were involved from July 2012 to September 2019. 52 subjects who underwent health examination during the same period were matched as the control group. Subjects in both groups underwent HUTT. The HR distance between 5 min and 0 min (HRD5) and between 10 min and 0 min (HRD10) during HUTT were calculated. Results The POTS group was significantly higher than the control group in HR5, HR10, HRD5 and HRD10 (P 0.05). 53 subjects with POTS were followed up for 96.0 (40.5, 134.5) days during treatment with metoprolol. HUTT results demonstrated that 58.49% of subjects with POTS had a response and symptom scores were reduced after intervention. HR and HRD were useful in predicting the efficacy of metoprolol on POTS. When HR5, HR10, HRD5 and HRD10 respectively ≥110, 112, 34 and 37 beats/min, the sensitivity and specificity were 82.50% and 69.23%, 84.62% and 69.70%, 85.29% and 89.47%, 97.56% and 64.86%, respectively. Conclusion HR and HRD are helpful to predict the efficacy of metoprolol on POTS in children and adolescents.Objective To determine if higher volume feedings improve postnatal growth among very preterm infants. Study design Randomized clinical trial with 11 parallel allocation conducted from 1/2015 to 6/2018 in a single academic medical center in the United States. 224 infants with a birth weight 1001-2500 grams born at less then 32 weeks of gestation were randomized to higher (180-200 mL/kg/day) or usual volume feedings (140-160 mL/kg/day) after establishing full enteral feedings (≥120 mL/kg/day). The primary outcome was growth velocity (g/kg/day) from randomization to study completion at 36 weeks of postmenstrual age or hospital discharge if earlier. Results Growth velocity increased among infants in the higher volume group compared with the usual volume group (mean [SD], 20.5 [4.5] versus 17.9 [4.5] g/kg/day; p less then 0.001). selleck kinase inhibitor At study completion, all measurements were higher among infants in the higher volume group compared with the usual volume group; weight (2365 [324] g, Z-score -0.60 [0.73] versus 2200 [308] g, Z-score -0.94 [0.71]; p less then 0.001); head circumference (31.9 [1.3] cm, Z-score -0.30 [0.91] versus 31.4 [1.3] cm, Z-score -0.53 [0.84]; p=0.01); length (44.9 [2.1] cm, Z-score -0.68 [0.88] versus 44.4 [2.0], Z-score -0.83 [0.84]; p=0.04); and mid-arm circumference (8.8 [0.8] cm versus 8.4 [0.8] cm; p=0.002). Bronchopulmonary dysplasia, patent ductus arteriosus, necrotizing enterocolitis, or other adverse outcomes did not differ between groups. Conclusion(s) In very preterm infants weighing 1001-2500 grams at birth, higher volume feedings increased growth velocity, weight, head circumference, length, and mid-arm circumference compared with usual volume feedings without adverse effects.Chagas disease is a public health problem in America. Its parasite, Trypanosoma cruzi, presents different discrete typing units (DTUs), colonizes organs of mammalian hosts in chronic infections, and presents tropism for particular organs in experimental infections. We evaluated T. cruzi tropism towards organs on the naturally infected rodent Octodon degus, identifying the parasites' DTUs, by means of conventional PCR and hybridization. Almost all the analyzed organs presented T. cruzi. More than 42% of the tested oesophagus, skin, skeletal muscle, brain and intestine showed T. cruzi DNA. Other nine types of organs were infected in over 15%. These results suggest that there is some tropism by T. cruzi in chronically infected O. degus. DTU TcV was present in 92.5% of infected organs with identified DTUs; this DTU is frequently reported in human infections in the Southern Cone of South America. Few organs showed mixed DTU infections. This is one of the few reports on the outcome of chronic natural T. cruzi-infection in wild mammal hosts exposed to naturally infected vectors.Trypanosoma cruzi, the etiological agent of Chagas disease, is responsible for the infection of millions of people worldwide and it is a public health problem, without an effective cure. Four fragments with antimicrobial potential from the hemocyanin of Penaeus monodon shrimp were identified using a computer software AMPA. The present study aimed to evaluate the antichagasic effect of these four peptides (Hmc364-382, Hmc666-678, Hmc185-197 and Hmc476-498). The peptides were tested against the epimastigote, trypomastigote and amastigote forms of Trypanosoma cruzi Y strain (benznidazole-resistant strain) and cytotoxicity in mammalian cells was evaluated against LLC-MK2 lineage cells. Two fragments (Hmc364-382, Hmc666-678) showed activity against the epimastigote and trypomastigote forms and their selectivity index (SI) was calculated. The Hmc364-382 peptide was considered the most promising (SI > 50) one and it was used for further studies, using flow cytometry analyses with specific molecular probes and scanning electron microscopy (SEM).
Read More: https://www.selleckchem.com/
![]() |
Notes is a web-based application for online taking notes. You can take your notes and share with others people. If you like taking long notes, notes.io is designed for you. To date, over 8,000,000,000+ notes created and continuing...
With notes.io;
- * You can take a note from anywhere and any device with internet connection.
- * You can share the notes in social platforms (YouTube, Facebook, Twitter, instagram etc.).
- * You can quickly share your contents without website, blog and e-mail.
- * You don't need to create any Account to share a note. As you wish you can use quick, easy and best shortened notes with sms, websites, e-mail, or messaging services (WhatsApp, iMessage, Telegram, Signal).
- * Notes.io has fabulous infrastructure design for a short link and allows you to share the note as an easy and understandable link.
Fast: Notes.io is built for speed and performance. You can take a notes quickly and browse your archive.
Easy: Notes.io doesn’t require installation. Just write and share note!
Short: Notes.io’s url just 8 character. You’ll get shorten link of your note when you want to share. (Ex: notes.io/q )
Free: Notes.io works for 14 years and has been free since the day it was started.
You immediately create your first note and start sharing with the ones you wish. If you want to contact us, you can use the following communication channels;
Email: [email protected]
Twitter: http://twitter.com/notesio
Instagram: http://instagram.com/notes.io
Facebook: http://facebook.com/notesio
Regards;
Notes.io Team