4 Host, 96T, apoptosis, array, Bacteria Pig Pigeon, Bafilomycin A1, Blocking, Ch 223191, Choline Acetyltransferase Antibody, Deoxycholic Acid Sodium Salt, Glycodeoxycholic Acid, GMO, Goat, Green, Mip 1B, Pamabrom 100Mg, Pepstatin A, Phospho 4Ebp1, Plant, plasmid, Plate, Tubastatin A, Valproic Acid Sodium Salt

Mass Measurements of Neutron-Deficient Yb Isotopes and Nuclear Structure at the Extreme Proton-Rich Side of the N=82 Shell

High-accuracy mass measurements of neutron-deficient Yb isotopes have been performed at TRIUMF using TITAN’s multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS). For the first time, an MR-TOF-MS was used on line simultaneously as an isobar separator and as a mass spectrometer, extending the measurements to two isotopes further away from stability than otherwise possible.
The ground state masses of ^{150,153}Yb and the excitation energy of ^{151}Yb^{m} were measured for the first time. As a result, the persistence of the N=82 shell with almost unmodified shell gap energies is established up to the proton drip line. Furthermore, the puzzling systematics of the h_{11/2}-excited isomeric states of the N=81 isotones are unraveled using state-of-the-art mean field calculations.

The CERN-MEDICIS Isotope Separator Beamline

CERN-MEDICIS is an off-line isotope separator facility for the extraction of radioisotopes from irradiated targets of interest to medical applications. The beamline, between the ion source and the collection chamber, consists of ion extraction and focusing elements, and a dipole magnet mass spectrometer recovered from the LISOL facility in Louvain-la-Neuve.
The latter has been modified for compatibility with MEDICIS, including the installation of a window for injecting laser light into the ion source for resonance photo-ionization. Ion beam optics and magnetic field modeling using SIMION and OPERA respectively were performed for the design and characterization of the beamline. The individual components and their optimal configuration in terms of ion beam extraction, mass separation, and ion transport efficiency is described, along with details of the commissioning and initial performance assessment with stable ion beams.

Triple Oxygen Isotope Measurements (Δ’ 17 O) of Body Water Reflect Water Intake, Metabolism, and δ 18 O of Ingested Water in Passerines

Understanding physiological traits and ecological conditions that influence a species reliance on metabolic water is critical to creating accurate physiological models that can assess their ability to adapt to environmental perturbations (e.g., drought) that impact water availability. However, relatively few studies have examined variation in the sources of water animals use to maintain water balance, and even fewer have focused on the role of metabolic water. A key reason is methodological limitations.
Here, we applied a new method that measures the triple oxygen isotopic composition of a single blood sample to estimate the contribution of metabolic water to the body water pool of three passerine species. This approach relies on Δ’17O, defined as the residual from the tight linear correlation that naturally exists between δ17O and δ18O values. Importantly, Δ’17O is relatively insensitive to key fractionation processes, such as Rayleigh distillation in the water cycle that have hindered previous isotope-based assessments of animal water balance.
  • We evaluated the effects of changes in metabolic rate and water intake on Δ’17O values of captive rufous-collared sparrows (Zonotrichia capensis) and two invertivorous passerine species in the genus Cinclodes from the field.
  • As predicted, colder acclimation temperatures induced increases in metabolic rate, decreases in water intake, and increases in the contribution of metabolic water to the body water pool of Z. capensis, causing a consistent change in Δ’17O. Measurement of Δ’17O also provides an estimate of the δ18O composition of ingested pre-formed (drinking/food) water.
  • Estimated δ18O values of drinking/food water for captive Z. capensis were ~ -11‰, which is consistent with that of tap water in Santiago, Chile. In contrast, δ18O values of drinking/food water ingested by wild-caught Cinclodes were similar to that of seawater, which is consistent with their reliance on marine resources. Our results confirm the utility of this method for quantifying the relative contribution of metabolic versus pre-formed drinking/food water to the body water pool in birds.
isotope
isotope

Does the Amount of Stable Isotope Dose Influence Retinol Kinetic Responses and Predictions of Vitamin A Total Body Stores by the Retinol Isotope Dilution Method in Theoretical Children and Adults?

Background: To minimize both cost and perturbations to the vitamin A system, investigators limit the amount of stable isotope administered when estimating vitamin A total body stores (TBS) by retinol isotope dilution (RID).
Objectives: We hypothesized that reasonable increases in the mass of stable isotope administered to theoretical subjects would have only transient impacts on vitamin A kinetics and minimal effects on RID-predicted TBS.
Methods: We adapted previously-used theoretical subjects (3 children, 3 adults) with low, moderate, or high assigned TBS and applied compartmental analysis to solve a steady state model for tracer and tracee using assigned values for retinol kinetic parameters and plasma retinol.
To follow retinol trafficking when increasing amounts of stable isotope were administered [1.39-7 (children) and 2.8-14 µmol retinol (adults)], we added assumptions to an established compartmental model so that plasma retinol homeostasis was maintained.
Using model-simulated data, we plotted retinol kinetics versus time and applied the RID equation TBS = FaS/SAp [Fa, fraction of dose in stores; S, retinol specific activity (SA) in plasma/SA in stores; SAp, SA in plasma] to calculate vitamin A stores.
Results: The model predicted that increasing the stable isotope dose caused transient early increases in hepatocyte total retinol; increases in plasma tracer were accompanied by decreases in tracee to maintain plasma retinol homeostasis. Despite changes in kinetic responses, RID accurately predicted assigned TBS (98-105%) at all loads for all theoretical subjects from 1-28 d postdosing.
Conclusions: Results indicate that, compared with doses of 1.4-3.5 µmol used in recent RID field studies, doubling the stable isotope dose should not affect accuracy of TBS predictions, thus allowing for experiments of longer duration when including a super-subject design (Ford et al., J Nutr 2020;150:411-8) and/or studying retinol kinetics.
Keywords: model-based compartmental analysis; retinol isotope dilution method; retinol kinetics; theoretical humans; vitamin A status.

pAAV-RC1 Vector

VPK-421 10 µg
EUR 647
Description: The pAAV-RC1 vector contains the rep and cap genes required to generated recombinant AAV of serotype 1. Co-transfect with other packaging plasmids and an expression vector into 293 cells for AAV-1 packaging.

pAAV-RC3 Vector

VPK-423 10 µg
EUR 647
Description: The pAAV-RC3 vector contains the rep and cap genes required to generated recombinant AAV of serotype 3. Co-transfect with other packaging plasmids and an expression vector into 293 cells for AAV-3 packaging.

pAAV-RC4 Vector

VPK-424 10 µg
EUR 647
Description: The pAAV-RC4 vector contains the rep and cap genes required to generated recombinant AAV of serotype 4. Co-transfect with other packaging plasmids and an expression vector into 293 cells for AAV-4 packaging.

pAAV-RC5 Vector

VPK-425 10 µg
EUR 647
Description: The pAAV-RC5 vector contains the rep and cap genes required to generated recombinant AAV of serotype 5. Co-transfect with other packaging plasmids and an expression vector into 293 cells for AAV-5 packaging.

pAAV-RC6 Vector

VPK-426 10 µg
EUR 647
Description: The pAAV-RC6 vector contains the rep and cap genes required to generated recombinant AAV of serotype 6. Co-transfect with other packaging plasmids and an expression vector into 293 cells for AAV-6 packaging.

pAAV-RC9 vector

PVT12073 2 ug
EUR 524

pAAV-DJ vector

PVT12151 2 ug
EUR 438

pAAV-RC6

PVT14647 2 ug
EUR 703

pAAV- RC

PVT2103 2 ug
EUR 241

pAAV-MCS Expression Vector

VPK-410 10 µg
EUR 647
Description: Clone your gene of interest into this AAV Expression Vector, then co-transfect along with AAV packaging vectors into a packaging host cell line such as 293AAV.

pAAV-DJ/8 Vector

VPK-420-DJ-8 10 µg
EUR 647
Description: The pAAV-DJ/8 vector contains the rep and cap genes required to generated recombinant AAV of serotype DJ/8. Co-transfect with other packaging plasmids and an expression vector into 293 cells for AAV-DJ/8 packaging.

pAAV-GFP Control Vector

AAV-400 10 µg
EUR 566
Description: Use this control vector to co-transfect along with AAV packaging vectors to produce a recombinant AAV control.

pAAV-Cre Control Vector

AAV-401 10 µg
EUR 566
Description: Use this control vector to co-transfect along with AAV packaging vectors to produce a recombinant AAV control.

pAAV-LacZ Control Vector

AAV-402 10 µg
EUR 566
Description: Use this control vector to co-transfect along with AAV packaging vectors to produce a recombinant AAV control.

pAAV-MCS Promoterless Expression Vector

VPK-411 10 µg
EUR 647
Description: Clone your gene of interest into this AAV Expression Vector, then co-transfect along with AAV packaging vectors into a packaging host cell line such as 293AAV.

pAAV-IRES-Puro Expression Vector

VPK-415 10 µg
EUR 647
Description: Clone your gene of interest into this AAV Expression Vector, then co-transfect along with AAV packaging vectors into a packaging host cell line such as 293AAV.

pAAV-IRES-Neo Expression Vector

VPK-416 10 µg
EUR 647
Description: Clone your gene of interest into this AAV Expression Vector, then co-transfect along with AAV packaging vectors into a packaging host cell line such as 293AAV.

pAAV-IRES-Hygro Expression Vector

VPK-417 10 µg
EUR 647
Description: Clone your gene of interest into this AAV Expression Vector, then co-transfect along with AAV packaging vectors into a packaging host cell line such as 293AAV.

pAAV-IRES-GFP Expression Vector

VPK-418 10 µg
EUR 647
Description: Clone your gene of interest into this AAV Expression Vector, then co-transfect along with AAV packaging vectors into a packaging host cell line such as 293AAV.

pAAV-IRES-Bsd Expression Vector

VPK-419 10 µg
EUR 647
Description: Clone your gene of interest into this AAV Expression Vector, then co-transfect along with AAV packaging vectors into a packaging host cell line such as 293AAV.

pAAV-fNPY-GFP

PVT14636 2 ug
EUR 599

pAAV-RSV-SpCas9

PVT17629 2 ug
EUR 300

pAAV-CAG-GFP

PVT17666 2 ug
EUR 341

pAAV- IRES- ZsGreen1

PVT11044 2 ug
EUR 301

pAAV- ZsGreen1- shRNA

PVT11045 2 ug
EUR 370

pAAV- MCS Plasmid

PVT2102 2 ug
EUR 241

pAAV-EF1a-DIO-mCherry

PVT17841 2 ug
EUR 300

pAAV- IRES- hrGFP Plasmid

PVT2104 2 ug
EUR 266

Human Topoisomerase I

TG2005H-RC2 500 units
EUR 448

pAAV- CMV- mCherry- U6- sgRNA

PVT11046 2 ug
EUR 301

pAAV-hSyn-hChR2(H134R)-mCherry

PVT19026 2 ug
EUR 258

pAAV-hSyn-eNpHR 3.0-EYFP

PVT19063 2 ug
EUR 258

pAAV-EF1a-DIO-hM3D(Gq)-mCherry

PVT17847 2 ug
EUR 300

pAAV-MCS-Ppargc1a-m-FLAG-HA

PVT18341 2 ug
EUR 300

pVL1392 Vector

ABP-BVP-10001 5 ug Ask for price

pVL1393 Vector

ABP-BVP-10002 5 ug Ask for price

pORB Vector

ABP-BVP-10003 5 ug Ask for price

pAcSec1 Vector

ABP-BVP-10004 5 ug Ask for price

pAcIRES Vector

ABP-BVP-10005 5 ug Ask for price

pEE14.4 vector

PVT11901 2 ug
EUR 1036

pENTR223.1 vector

PVT11990 2 ug
EUR 352

pUB_smFLAG_KDM5B_MS2 vector

PVT11991 2 ug
EUR 352

ER2738 vector

PVT11993 2 ug
EUR 352

pFLPo vector

PVT12063 2 ug
EUR 352

pREDKI vector

PVT12064 2 ug
EUR 352

pREDCas9 vector

PVT12065 2 ug
EUR 352

PWUR790 vector

PVT12066 2 ug
EUR 352

xCas9 vector

PVT12068 2 ug
EUR 352

sgRNA vector

PVT12071 2 ug
EUR 352

PY094 vector

PVT12150 2 ug
EUR 352

PY094 vector

PVT12150-1 2 ug
EUR 352

pRGEB31 vector

PVT12152 2 ug
EUR 352

pSET152 vector

PVT3395 2 ug
EUR 376

pMXs Retroviral Vector

RTV-010 10 µg
EUR 624
Description: Use this construct to clone your gene for downstream recombinant retroviral packaging

pMYs Retroviral Vector

RTV-020 10 µg
EUR 624
Description: Use this construct to clone your gene for downstream recombinant retroviral packaging

pMZs Retroviral Vector

RTV-030 10 µg
EUR 624
Description: Use this construct to clone your gene for downstream recombinant retroviral packaging

pYLEX1 - Expression Vector

FYY203-5MG 5mg Ask for price

pYLSC1- Secretion Vector

FYY204-5MG 5mg Ask for price

pMRNAxp mRNAExpress Vector

MR000PA-1 10 ug
EUR 900

pENTR223-ATP5PO vector

PVT11685 2 ug
EUR 304

pENTR223- LC25A10 vector

PVT11686 2 ug
EUR 304

pENTR223-RSU1 vector

PVT11687 2 ug
EUR 304

pENTR223-CCDC24 vector

PVT11688 2 ug
EUR 304

pENTR223-BAT2L vector

PVT11689 2 ug
EUR 304

pENTR223-RSPH14 vector

PVT11690 2 ug
EUR 304