Midtgaardchurchill2717
Human embryonic stem cells (hESCs) hold promise in regenerative medicine but allogeneic immune rejections caused by highly polymorphic human leukocyte antigens (HLAs) remain a barrier to their clinical applications. Here, we used a CRISPR/Cas9-mediated HLA-editing strategy to generate a variety of HLA homozygous-like hESC lines from pre-established hESC lines. We edited four pre-established HLA-heterozygous hESC lines and created a mini library of 14 HLA-edited hESC lines in which single HLA-A and HLA-B alleles and both HLA-DR alleles are disrupted. The HLA-edited hESC derivatives elicited both low T cell- and low NK cell-mediated immune responses. compound 991 chemical structure Our library would cover about 40% of the Asian-Pacific population. We estimate that HLA-editing of only 19 pre-established hESC lines would give rise to 46 different hESC lines to cover 90% of the Asian-Pacific population. This study offers an opportunity to generate an off-the-shelf HLA-compatible hESC bank, available for immune-compatible cell transplantation, without embryo destruction. Graphical Abstract.
In this study, we designed and synthesized four novel
Ga-radiolabeled compounds ([
Ga]DN-3, [
Ga]DN-4, [
Ga]NN-3, and [
Ga]NN-4) composed of a nitroimidazole and two types of bifunctional chelates (DOTA or NOTA) via several alkyl linkers of different length. Then, we evaluated their properties as hypoxia imaging probes for positron emission tomography (PET) compared with conventional compounds ([
Ga]DN-2 and [
Ga]NN-2).
The precursors of
Ga-radiolabeled compounds were synthesized through a two-step reaction, and then reacted with
GaCl
to be
Ga-radiolabeled compounds. FaDu cells were treated with
Ga-radiolabeled compounds and then incubated under normoxic (21% O
) or hypoxic (1% O
) conditions. The radioactivity of these cells was measured 2h after incubation. The biodistribution and PET/CT imaging of
Ga-radiolabeled compounds in FaDu-bearing Balb/c nude mice were evaluated 2h after intravenous injection.
The
Ga-radiolabeled compounds were synthesized with radiochemical purities over 95%. In the in vitro study, the levels of
Ga-radiolabeled compounds were significantly higher in hypoxic cells than in normoxic cells. In hypoxic cells, the compounds we designed in this study demonstrated higher accumulation than the conventional compounds. In the in vivo biodistribution study, [
Ga]DN-3 exhibited the highest accumulation in tumor. In the in vivo PET/CT imaging study, the tumor tissues of the FaDu-xenografted mice were visualized at 2h after intravenous administration of
Ga-radiolabeled compounds.
Our study suggested that the length of the linkers connecting nitroimidazole to a bifunctional chelate affect PET imaging of hypoxic tumors with
Ga-radiolabeled compounds.
Our study suggested that the length of the linkers connecting nitroimidazole to a bifunctional chelate affect PET imaging of hypoxic tumors with 68Ga-radiolabeled compounds.Rapidly assessing how ill a patient is based on their immediate presentation-colloquially termed 'eyeballing' in practice-serves a vital role in acute care settings. Yet surprisingly little is known about how this diagnostic skill is learned or how it should be taught. Some authors have pointed to a dual-process model, suggesting that assessments of illness severity are driven by two distinct types of processing an intuitive, fast, pattern recognition-like process (Type 1) that depends on many prior patient encounters and outcomes being stored in memory; and a deliberate, slow, analytic process (Type 2) characterized by additional data gathering, data scrutiny, or recollection of rules. But prior studies have supported a dual-process model for the assessment of illness severity only insofar as experienced clinicians chiefly displayed what was presumed to be Type 1 processing. Here we further explored a dual-process model by examining whether less experienced clinicians displayed both types of processing when assessing illness severity across a series of cases. Consistent with the model, a dissociation between Type 1 and Type 2 processing was observed through resident reports of deliberation, response times, and three eye tracking metrics associated with diagnostic expertise. We conclude by discussing potential implications for the training of this enigmatic diagnostic skill.
Very few studies have investigated the relationship between body mass index (BMI) and risk of urinary tract infection (UTI), and conclusions from these available studies have been inconsistent. To resolve this inconsistency, we performed a systematic review and meta-analysis to precisely examine the association between BMI and UTI.
This meta-analysis was performed based on the PRISMA recommendations. PubMed, Web of Science, Scopus, Embase, and Google Scholar databases were searched for all published observational studies that reported the risk of UTI based on BMI categories up to March 2020.
Fourteen (n = 14) articles comprising 19 studies in different populations met our inclusion criteria. The overall analysis showed a significant increased risk of UTI in subjects affected by obesity vs. individuals without obesity (RR = 1.45; 95% CI 1.28 - 1.63; I
= 94%), and a non-significant increased risk of UTI in subjects who were overweight (RR = 1.03; 95% CI 0.98 - 1.10; I
= 49.6%) and underweight (RR = 0.99; 95% CI 0.81 - 21; I
= 0.0%) when compared to subjects who had normal weight. In the stratified analysis, we showed that obesity increased the risk of UTI in females (RR = 1.63; 95% CI 1.38 - 1.93) and in subjects below 60years old (RR = 1.53; 95% CI 1.33 - 1.75).
This systematic review and meta-analysis recognized a significant relationship between BMI and incidence of UTI in obese vs. non-obese subjects, as well as in females and in individuals below 60years old.
This systematic review and meta-analysis recognized a significant relationship between BMI and incidence of UTI in obese vs. non-obese subjects, as well as in females and in individuals below 60 years old.
This study aimed to investigate the correlation between mindful eating and nutritional intake, food consumption, and healthful and unhealthful plant-based dietary patterns in young Japanese women.
The sample comprised 215 female undergraduates who responded to a two-questionnaire anonymous survey conducted in Tokyo, Japan in 2018 and 2019 from November to December. We measured mindful eating status using the Expanded Mindful Eating Scale (EMES) and used Japanese plant-based dietary indices to determine plant-based dietary patterns. Partial correlation analyses were conducted to determine the correlation of mindful eating with energy and nutrient intake, food consumption, and plant-based dietary patterns, after adjusting for demographics and body mass index.
Participants with higher sub-scores in "health of the planet" and "awareness and appreciation for food" ate higher quantities of several micronutrients and plant-based foods and were more likely to have a healthful plant-based dietary pattern. They were also less likely to have an unhealthful plant-based dietary pattern.