Month: October 2022

Garavagno, Maria de los A.; Hernandez, Federico J.; Jara-Toro, Rafael A.; Mahecha, Genesys; Barrera, Javier A.; Taccone, Raul A.; Pino, Gustavo A. published the artcile< Rate coefficient and mechanism of the OH-initiated degradation of cyclobutanol: A combined experimental and theoretical study>, Application of C5H10O2, the main research area is cyclobutanol OH initiated degradation rate coefficient exptl theor study.

The degradation process of cyclobutanol (cButOH) by hydroxyl radical (OH), under atm. conditions, (750 ± 10) Torr of air and (296 ± 2) K, has been studied. The rate coefficient for the title reaction (k296K = (7.3 ± 0.6) x 10-12 cm3 mol.-1 s-1) was determined at 296 K by the conventional relative-rate method. Electronic structure calculations with uCCSD(T)/uBHandHLYP/aug-cc-PVDZ were conducted to study the reaction mechanism. The global rate coefficient was also calculated using the transition state theory with tunneling corrections, obtaining a value of 5.4 x 10-12 cm3 mol.-1 s-1 in agreement with the exptl. determination Addnl., reaction products identification in clean and NOx-contaminated atmospheres was performed for the first time. The identified reaction products and their corresponding yields (YP) depend on the environment composition in which the reaction is studied. In the absence of NOx, cyclobutanone (cButanone) was the only identified product, with YcButanone = (0.66 ± 0.08). In NOx-contaminated atmospheres, in addition to cButanone, THF (THF), 2-nitro-1-butanol (2N1B), 3-nitro-2-butanol (3N2B) and 2-methyl-2-nitro-1-propanol (2M2N1P), were also identified as primary reaction products. Under this condition, we were able to determine only the yields of cButanone and THF (YcButanone = 0.38 ± 0.05 and YTHF = 0.28 ± 0.02). A likely reaction mechanism for the observed products is proposed and the atm. implications are discussed.

Atmospheric Environment published new progress about Alcohols, nitro Role: POL (Pollutant), OCCU (Occurrence). 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Application of C5H10O2.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Nardelli, Silvia; Riggio, Oliviero; Rosati, Davide; Gioia, Stefania; Farcomeni, Alessio; Ridola, Lorenzo published the artcile< Hepatitis C virus eradication with directly acting antivirals improves health-related quality of life and psychological symptoms.>, Synthetic Route of 58-97-9, the main research area is Alexithymia; Depression; Directly acting antivirals; Health related quality of life; Hepatitis C virus; State and trait anxiety.

BACKGROUND: Alterations in health-related quality of life (HRQoL) and neuropsychological disorders were described in the hepatitis C virus (HCV) patients. Although several studies investigated the modifications of HRQoL after HCV eradication, no data exists on the modifications of neuropsychological symptoms. AIM: To investigate the effect of directly acting antivirals (DAAs) treatment on HRQoL and neuropsychological symptoms. METHODS: Thirty nine patients with HCV infection underwent a neuropsychological assessment, including Zung-Self Depression-Rating-Scale, Spielberg State-Trait Anxiety Inventory Y1-Y2 and the Toronto-Alexithymia Scale-20 items before and after DAAs treatment. HRQoL was detected by Short-Form-36 (SF-36). RESULTS: All HRQoL domains, but role limitation physical and bodily pain, significantly improved after treatment. Interestingly, after DAAs treatment, all domains of HRQoL returned similar to those of controls. Each neuropsychological test significantly improved after HCV eradication. A significant correlation was observed among each psychological test and the summary components of SF-36. At multiple linear regression analysis including each psychological test as possible covariates, Zung-Self Depression Rating Scale (Zung-SDS) score was independently and significantly related to summary components of the SF-36 in the basal state and the difference between Zung-SDS score before and after treatment was the only variable significantly and independently related to the modification of HRQoL induced by the treatment. CONCLUSION: Neuropsychological symptoms strongly influenced HRQoL in HCV patients and there was a significant improvement of neuropsychological tests and HRQoL after DAAs treatment.

World journal of gastroenterology published new progress about 58-97-9. 58-97-9 belongs to class tetrahydrofurans, and the molecular formula is C9H13N2O9P, Synthetic Route of 58-97-9.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Verevkin, Sergey P.; Siewert, Riko; Pimerzin, Andrey A. published the artcile< Furfuryl alcohol as a potential liquid organic hydrogen carrier (LOHC): Thermochemical and computational study>, HPLC of Formula: 97-99-4, the main research area is furfuryl alc liquid organic hydrogen carrier thermochem hydrogenation dehydrogenation.

The liquid organic H carriers (LOHCs) are considered as a promising materials for H storage. The liquid phase standard molar enthalpies of formation of furfuryl alc. and tetrahydrofurfuryl alc. were obtained from high-precision combustion calorimetry. Their standard molar enthalpies of vaporization were derived from the vapor pressure temperature dependences measured by the transpiration method. Gas phase molar enthalpies of formation of furfuryl alc. and tetrahydrofurfuryl alc. calculated by the high-level quantum-chem. method G4, were in an excellent agreement with the exptl. results. Reaction enthalpies and equilibrium temperature of the hydrogenation/dehydrogenation reactions of furfuryl alc. were calculated and compared with the data for furan and other potential liquid organic H carriers.

Fuel published new progress about Alcohols Role: PRP (Properties), TEM (Technical or Engineered Material Use), USES (Uses). 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, HPLC of Formula: 97-99-4.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Harrison, Carrie-Ann; Jackson, P. Mark; Moody, Christopher J.; Williams, Jonathan M. J. published the artcile< Cyclopenta[b]indoles. Part 2. Model studies towards the tremorgenic mycotoxins>, Recommanded Product: 2,2,5,5-Tetramethyldihydrofuran-3(2H)-one, the main research area is cyclopentaindole; tremorgenic mycotoxin cyclopentindole.

The 7-bromocyclopenta[b]indole I has been converted into the hydroxybutenyl derivatives and a tetrahydrofuranylidene derivative in model studies towards the elaboration of paspalitrem and lolitrem type side chains. In a parallel approach, the cyclopentapyrrole II was converted into the fused α-pyrone III which acted as a pyrrole-2,3-quinodimethane, and underwent Diels-Alder reaction to give, after loss of carbon dioxide, the cyclopentaindoles, e.g. IV.

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry published new progress about Indole alkaloids Role: SPN (Synthetic Preparation), PREP (Preparation). 5455-94-7 belongs to class tetrahydrofurans, and the molecular formula is C8H14O2, Recommanded Product: 2,2,5,5-Tetramethyldihydrofuran-3(2H)-one.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Ryu, Incheol; Kim, Yoon Ki published the artcile< AU-rich element-mediated mRNA decay via the butyrate response factor 1 controls cellular levels of polyadenylated replication-dependent histone mRNAs>, Product Details of C9H13N2O9P, the main research area is mRNA decay AU rich element BRF1 polyadenylated replication histone; ARE-mediated mRNA decay; ELAV like RNA binding protein 1 (ELAVL1); Hu antigen R (HuR); RNA; RNA degradation; RNA metabolism; RNA turnover; RNA-protein interaction; ZFP36 ring finger protein like 1 (ZFP36L1); butyrate response factor 1 (BRF1); histone mRNA biogenesis; mRNA stability; polyadenylation; posttranscriptional regulation; replication-dependent histone mRNA.

Replication-dependent histone (RDH) mRNAs have a nonpolyadenylated 3′-UTR that ends in a highly conserved stem-loop structure. Nonetheless, a subset of RDH mRNAs has a poly(A) tail under physiol. conditions. The biol. meaning of poly(A)-containing (+) RDH mRNAs and details of their biosynthesis remain elusive. Here, using HeLa cells and Western blotting, qRT-PCR, and biotinylated RNA pulldown assays, we show that poly(A)+ RDH mRNAs are post-transcriptionally regulated via adenylate- and uridylate-rich element-mediated mRNA decay (AMD). We observed that the rapid degradation of poly(A)+ RDH mRNA is driven by butyrate response factor 1 (BRF1; also known as ZFP36 ring finger protein-like 1) under normal conditions. Conversely, cellular stresses such as UV C irradiation promoted BRF1 degradation, increased the association of Hu antigen R (HuR; also known as ELAV-like RNA-binding protein 1) with the 3′-UTR of poly(A)+ RDH mRNAs, and eventually stabilized the poly(A)+ RDH mRNAs. Collectively, our results provide evidence that AMD surveils poly(A)+ RDH mRNAs via BRF1-mediated degradation under physiol. conditions.

Journal of Biological Chemistry published new progress about 3′-Untranslated region Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 58-97-9 belongs to class tetrahydrofurans, and the molecular formula is C9H13N2O9P, Product Details of C9H13N2O9P.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Falcao, Fatima; Lopes, Carla; Viegas, Erica; Perez, Rita; Aldir, Isabel; Farinha, Helena; Carvalho, Antonio; Mirco, Ana; Marques, Susana; Costa, Tiago Bana E.; Miranda, Ana Claudia; Lebre, Luis; Peixe, Paula; Chagas, Cristina; Mansinho, Kamal; Correia, Jose Manuel published the artcile< Experience of a Portuguese center: effectiveness of direct-acting antiviral therapy for hepatitis C>, SDS of cas: 58-97-9, the main research area is Antiviral Agents/therapeutic use; Hepacivirus/drug effects; Hepatitis C/drug therapy; Portugal.

Introduction: In late 2014, Portugal implemented a national program for the treatment of patients with chronic hepatitis C with directacting antiviral agents. This program has made Portugal one of the first European countries to implement a structured measure of treatment to eliminate this serious public health problem. The aim of this study was to assess the effectiveness of direct-acting antiviral therapy in the treatment of patients with chronic hepatitis C virus infection. Material and Methods: A retrospective observational study was conducted at Centro Hospitalar de Lisboa Ocidental on the national online platform from Dec. 2014 until Feb. 2017 and included patients with hepatitis C virus infection who underwent treatment. The primary endpoint was sustained virol. response at least 12 wk post treatment. Data was analyzed with the SPSS 17.0 program. Results: During the study period, 820 patients completed therapy and achieved sufficient follow-up time to assess sustained virol. response with an overall response rate of 97.2% (n = 797) and a response rate of 98.0%, 99.5%, 90.9%, 95.1% and 94.2% for genotypes 1a, 1b, 2, 3 and 4, resp. Data suggested that advanced fibrosis (F3/F4), human immunodeficiency virus co-infection and treatment failure with interferon and ribavirin were not neg. related with sustained virol. response in our population. Most patients (80.1%) completed treatment with ledipasvir/sofosbuvir ± ribavirin. The most common adverse events were fatigue and insomnia followed by headache and weight loss. Discussion: Patients predominantly had genotype 1 infection which correlates with HCV distribution in Europe, but we found a major proportion in genotype 4 which can be explained by immigration from African countries. Our patients’ ages ranging from 22 to 90 years, reflected a new approach with no upper age limit. Direct-acting antivirals regimens resulted in remarkably high SVR rates compared to interferon-based regimens, which were consistent with clin. trials data. Conclusion: Our data showed that direct-acting antiviral-based regimens are safe and have a high success rate in the treatment of patients with hepatitis C virus infection in a real-world setting.

Acta Medica Portuguesa published new progress about 58-97-9. 58-97-9 belongs to class tetrahydrofurans, and the molecular formula is C9H13N2O9P, SDS of cas: 58-97-9.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Chen, Chun-Kai; Lin, Yan-Cheng; Hsu, Li-Che; Ho, Jin-Chieh; Ueda, Mitsuru; Chen, Wen-Chang published the artcile< High Performance Biomass-Based Polyimides for Flexible Electronic Applications>, Recommanded Product: Cyclobuta[1,2-c:3,4-c’]difuran-1,3,4,6(3aH,3bH,6aH,6bH)-tetraone, the main research area is biomass biodegradable polyimide flexible electronic OFET.

Biobased polymers have received extensive research attention in flexible and renewable electronics to meet the concept of environmental sustainability. In this study, we develop a series of new polyimides (PIs) from biosources to serve as the substrate and dielecs. for a flexible organic field-effect transistor (OFET). The bioderived diamine, (3R,6S)-hexahydrofuro[3,2-b]furan-3,6-diyl bis(4-aminobenzoate) (ISBA), synthesized from isosorbide (ISB), was reacted with three dianhydrides of pyromellitic dianhydride (PMDA), 3,3′,4,4′-biphenyl-tetracarboxylic dianhydride (BPDA), and cyclobutane-1,2,3,4-tetracarboxylic dianhydride (CBDA) to obtain PIs and copolyimides (Co-PIs) with a high biomass content up to 53%. These bioderived PIs possessed high Td’s over 400°C and Tg’s over 250°C. Furthermore, the CBDA-based and PMDA-based PIs exhibited CTE values below 50 ppm K-1 due to the rigid heterocyclic ISB unit and the structural linearity of the CBDA and PMDA moieties in the polymer backbone. High transparency and low coloration were also observed in the biobased PIs. Finally, highly thermal-resistant PI(ISBA-C95B5) consisting of the CBDA/BPDA mole ratio of 95/5 was applied as the substrate and dielecs. in flexible OFET, demonstrating the compatible and stable performance even after being baked at 200°C for 2 h or 1000 bending cycles. The present study reveals the potential application of biobased PIs in electronic devices for a sustainable economy.

ACS Sustainable Chemistry & Engineering published new progress about Biodegradable materials. 4415-87-6 belongs to class tetrahydrofurans, and the molecular formula is C8H4O6, Recommanded Product: Cyclobuta[1,2-c:3,4-c’]difuran-1,3,4,6(3aH,3bH,6aH,6bH)-tetraone.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Datta, Soumendra N; Chalokia, Ramandeep S; Wing, K W; Patel, K; Solanki, R; Desai, Janak published the artcile< Ultramini-percutaneous nephrolithotomy versus retrograde intrarenal surgery in the treatment of 10-30 mm calculi: a randomized controlled trial.>, Quality Control of 58-97-9, the main research area is Minimal invasive management of renal calculi; Randomized controlled trial; Retrograde intrarenal surgery (RIRS); Ultramini-percutaneous nephrolithotomy (UMP).

The surgical management of renal stones 10-30 mm is usually performed with percutaneous nephrolithotomy (PCNL) and retrograde intrarenal surgery (RIRS). Standard form of percutaneous nephrolithotomy has paved the way for miniaturized PCNL in many centres. We wanted to evaluate the efficacy, safety and the cost-effectiveness of ultramini-percutaneous nephrolithotomy (UMP) versus RIRS in the treatment of renal stones with stone burden 10-30 mm. Patients with renal stone burden 10-30 mm were prospectively randomized into either UMP or RIRS. The demographic data, stone characteristic, operative time and cost of the equipment were recorded. The stone free status, analgesic requirement, deterioration of the renal function and hemoglobin and the postoperative complications as per Clavein-Dindo grade were recorded. One hundred and fifty patients met inclusion criteria. Out of these 98 underwent UMP and 46 RIRS. Six withdrew the consent before the procedure. Mean stone size was comparable in either of the groups. Mean laser time and stone extraction time was significantly less for UMP compared to RIRS (41.17 min versus 73.58 min p < 0.0001). Mean consumable costs in the UMP group were considerably less at US$45.73 compared to the RIRS group at $423.11 (p < 0.0001). The stone free rates at 1 month of follow-up were 100% for UMP group and 73% for RIRS group. There were insignificant changes to mean hemoglobin and glomerular filtration rate (GFR) in all patients and the average length of the stay was similar in both the groups. The postoperative complications revealed Grade I and II rate of 10% in the UMP group and 35% in the RIRS group, respectively. We concluded that UMP to be safe, effective and more economical to the RIRS for renal stones up to 3 cm in size.Trial registered with ISRCTN registry ID ISRCTN20935105, Retrospective. Urolithiasis published new progress about 58-97-9. 58-97-9 belongs to class tetrahydrofurans, and the molecular formula is C9H13N2O9P, Quality Control of 58-97-9.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Xie, Chun-yan; Wang, Qinhua; Li, Guanya; Fan, Zhiyong; Wang, Hong; Wu, Xin published the artcile< Dietary supplement with nucleotides in the form of uridine monophosphate or uridine stimulate intestinal development and promote nucleotide transport in weaned piglets>, Electric Literature of 58-97-9, the main research area is piglet UMP uridine dietary supplement intestine development nucleotide transport; intestinal development; uridine; uridine monophosphate; weaned piglets.

BACKGROUND : Nucleotides are key constituents of milk, where they are utilized in cell replication, although there are limited studies for weaned piglets. This study evaluated the effects of uridine monophosphate (UMP) with uridine (UR) feed supplementation on the intestinal development and nucleotide transport in weaned piglets. RESULTS : Supplementation with UMP significantly increased (P ≤ 0.05) plasma glucose, and UR supplementation significantly reduced (0.05 ≤ P ≤ 0.10) the plasma total cholesterol (TC) of piglets when compared with that of the control group, although non-significant difference (P ≥ 0.05) in growth performance was observed among three groups. Piglets fed supplementary UR exhibited greater (P ≤ 0.05) crypt depth in the duodenum and ileum when compared with those in the supplementary UMP and control groups. Real-time quant. polymerase chain reaction (RT-qPCR) results revealed that UR supplementation increased (P ≤ 0.05) the relative mRNA levels of genes encoding the transmembrane proteins ZO-1 and occludin in the duodenum mucosa, and ZO-1 in the jejunum mucosa (P ≤ 0.05). Similarly, UR supplementation increased (P ≤ 0.05) expression of solute carriers SLC28A1 and SLC29A1 in the duodenum mucosa. Conversely, claudin-1 expression in the duodenum mucosa was inhibited (P ≤ 0.05) by dietary supplementation with UMP or UR. CONCLUSION : Collectively, our data indicated that dietary supplementation with UMP or UR was conducive to stimulating intestinal development and promoting nucleotide transport in weaned piglets.

Journal of the Science of Food and Agriculture published new progress about Body weight. 58-97-9 belongs to class tetrahydrofurans, and the molecular formula is C9H13N2O9P, Electric Literature of 58-97-9.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem