AB 5046 B

AB 5046 B

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AB 5046 B
Category Others
Catalog number BBF-03192
CAS 154037-63-5
Molecular Weight 170.16
Molecular Formula C8H10O4
Purity >98%

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Description

AB 5046 B is a substance produced by Nodulisporium AB5046 that causes plant chlorosis. It has the activity of inducing chlorosis of monocotyledonous and dicotyledonous plants.

Specification

Synonyms 2-Cyclohexen-1-one, 2-acetyl-3,5-dihydroxy-, (+/-)-
Storage Store at -20°C
IUPAC Name 2-acetyl-3,5-dihydroxycyclohex-2-en-1-one
Canonical SMILES CC(=O)C1=C(CC(CC1=O)O)O
InChI InChI=1S/C8H10O4/c1-4(9)8-6(11)2-5(10)3-7(8)12/h5,10-11H,2-3H2,1H3
InChI Key CHKRKQARNANJOD-UHFFFAOYSA-N

Properties

Boiling Point 383.7°C at 760 mmHg
Density 1.448 g/cm3
Solubility Soluble in DMSO

Reference Reading

1. Bile duct clearance and cholecystectomy for choledocholithiasis: Definitive single-stage laparoscopic cholecystectomy with intraoperative endoscopic retrograde cholangiopancreatography versus staged procedures
Gary A Bass, Arvid Pourlotfi, Mark Donnelly, Rebecka Ahl, Caroline McIntyre, Sara Flod, Yang Cao, Deirdre McNamara, Babak Sarani, Amy E Gillis, Shahin Mohseni J Trauma Acute Care Surg. 2021 Feb 1;90(2):240-248. doi: 10.1097/TA.0000000000002988.
Background: Clinical equipoise exists regarding optimal sequencing in the definitive management of choledocholithiasis. Our current study compares sequential biliary ductal clearance and cholecystectomy at an interval to simultaneous laparoendoscopic management on index admission in a pragmatic retrospective manner. Methods: Records were reviewed for all patients admitted between January 2015 and December 2018 to a Swedish and an Irish university hospital. Both hospitals differ in their practice patterns for definitive management of choledocholithiasis. At the Swedish hospital, patients with choledocholithiasis underwent laparoscopic cholecystectomy with intraoperative rendezvous endoscopic retrograde cholangiopancreatography (ERCP) at index admission (one stage). In contrast, interval day-case laparoscopic cholecystectomy followed index admission ERCP (two stages) at the Irish hospital. Clinical characteristics, postprocedural complications, and inpatient duration were compared between cohorts. Results: Three hundred fifty-seven patients underwent treatment for choledocholithiasis during the study period, of whom 222 (62.2%) underwent a one-stage procedure in Sweden, while 135 (37.8%) underwent treatment in two stages in Ireland. Patients in both cohorts were closely matched in terms of age, sex, and preoperative serum total bilirubin. Patients in the one-stage group exhibited a greater inflammatory reaction on index admission (peak C-reactive protein, 136 ± 137 vs. 95 ± 102 mg/L; p = 0.024), had higher incidence of comorbidities (age-adjusted Charlson Comorbidity Index, ≥3; 37.8% vs. 20.0%; p = 0.003), and overall were less fit for surgery (American Society of Anesthesiologists, ≥3; 11.7% vs. 3.7%; p < 0.001). Despite this, a significantly shorter mean time to definitive treatment, that is, cholecystectomy (3.1 ± 2.5 vs. 40.3 ± 127 days, p = 0.017), without excess morbidity, was seen in the one-stage compared with the two-stage cohort. Patients in the one-stage cohort experienced shorter mean postprocedure length of stay (3.0 ± 4.7 vs. 5.0 ± 4.6 days, p < 0.001) and total length of hospital stay (6.5 ± 4.6 vs. 9.0 ± 7.3 days, p = 0.002). The only significant difference in postoperative complications between the cohorts was urinary retention, with a higher incidence in the one-stage cohort (19% vs. 1%, p = 0.004). Conclusion: Where appropriate expertise and logistics exist within developing models of acute care surgery worldwide, consideration should be given to index-admission laparoscopic cholecystectomy with intraoperative ERCP for the treatment of choledocholithiasis. Our data suggest that this strategy significantly shortens the time to definitive treatment and decreases total hospital stay without any excess in adverse outcomes. Level of evidence: Therapeutic/Care Management Level IV.
2. Morphologic and physiologic characteristics of green sea turtle (Chelonia mydas) hatchlings in southeastern Florida, USA
Annie Page-Karjian, Nicole I Stacy, Ashley N Morgan, Christina M Coppenrath, Charles A Manire, Lawrence H Herbst, Justin R Perrault J Comp Physiol B. 2022 Nov;192(6):751-764. doi: 10.1007/s00360-022-01450-9. Epub 2022 Aug 7.
The ability of sea turtle hatchlings to survive into adulthood is related, in part, to their individual health status. Documenting a variety of health data is essential for assessing individual and population health. In this study, we report health indices for 297 green sea turtle (Chelonia mydas) hatchlings that emerged from 32 nests deposited on Juno Beach, Florida, USA in June-July, 2017. Results of physical examination, morphometrics, and infectious disease testing (chelonid alphaherpesvirus 5, ChHV5), and blood analyte reference intervals (hematology, plasma protein, glucose) are presented. Carapacial scute abnormalities were observed in 36% (108/297) of all hatchlings, including abnormal vertebral (86/297, 29%), lateral (72/297, 24%), and both vertebral and lateral (50/297, 17%) scutes. Hatchlings from nests laid in July, which was ~ 1.6 °C warmer than June, had significantly shorter incubation periods, and higher body mass, straight carapace length, body condition index, packed cell volume, and heterophil:lymphocyte ratios compared to hatchlings from nests laid in June. These results suggest that incubation temperatures are linked to hatchling developmental factors and size, nutritional and/or hydration status, and/or blood cell dynamics. Blood samples from all 297 hatchlings tested negative for ChHV5 DNA via quantitative PCR, including 86 hatchlings from the nests of 11 adult females that tested positive for ChHV5 via qPCR or serology in a separate study, lending support to the hypothesis that ChHV5 is horizontally (rather than vertically) transmitted among green turtles. Information resulting from this study represents a useful dataset for comparison to future health assessment and population monitoring studies of green turtle hatchlings in the northwestern Atlantic Ocean.
3. Brain Abnormalities and Epilepsy in Patients with Parry-Romberg Syndrome
C De la Garza-Ramos, A Jain, S A Montazeri, L Okromelidze, R McGeary, A A Bhatt, S J S Sandhu, S S Grewal, A Feyissa, J I Sirven, A L Ritaccio, W O Tatum, V Gupta, E H Middlebrooks AJNR Am J Neuroradiol. 2022 Jun;43(6):850-856. doi: 10.3174/ajnr.A7517.
Background and purpose: Parry-Romberg syndrome is a rare disorder characterized by progressive hemifacial atrophy. Concomitant brain abnormalities have been reported, frequently resulting in epilepsy, but the frequency and spectrum of brain involvement are not well-established. This study aimed to characterize brain abnormalities in Parry-Romberg syndrome and their association with epilepsy. Materials and methods: This is a single-center, retrospective review of patients with a clinical diagnosis of Parry-Romberg syndrome and brain MR imaging. The degree of unilateral hemispheric atrophy, white matter disease, microhemorrhage, and leptomeningeal enhancement was graded as none, mild, moderate, or severe. Other abnormalities were qualitatively reported. Findings were considered potentially Parry-Romberg syndrome-related when occurring asymmetrically on the side affected by Parry-Romberg syndrome. Results: Of 80 patients, 48 (60%) had brain abnormalities identified on MR imaging, with 26 (32%) having abnormalities localized to the side of the hemifacial atrophy. Sixteen (20%) had epilepsy. MR imaging brain abnormalities were more common in the epilepsy group (100% versus 48%, P < .001) and were more frequently present ipsilateral to the hemifacial atrophy in patients with epilepsy (81% versus 20%, P < .001). Asymmetric white matter disease was the predominant finding in patients with (88%) and without (23%) epilepsy. White matter disease and hemispheric atrophy had a higher frequency and severity in patients with epilepsy (P < .001). Microhemorrhage was also more frequent in the epilepsy group (P = .015). Conclusions: Ipsilateral MR imaging brain abnormalities are common in patients with Parry-Romberg syndrome, with a higher frequency and greater severity in those with epilepsy. The most common findings in both groups are white matter disease and hemispheric atrophy, both presenting with greater severity in patients with epilepsy.

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