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1.
Sci Rep ; 14(1): 10091, 2024 05 02.
Article in English | MEDLINE | ID: mdl-38698065

ABSTRACT

Eukaryotes produce a large number of cytochrome P450s that mediate the synthesis and degradation of diverse endogenous and exogenous metabolites. Yet, most of these P450s are uncharacterized and global tools to study these challenging, membrane-resident enzymes remain to be exploited. Here, we applied activity profiling of plant, mouse and fungal P450s with chemical probes that become reactive when oxidized by P450 enzymes. Identification by mass spectrometry revealed labeling of a wide range of active P450s, including six plant P450s, 40 mouse P450s and 13 P450s of the fungal wheat pathogen Zymoseptoria tritici. We next used transient expression of GFP-tagged P450s by agroinfiltration to show ER-targeting and NADPH-dependent, activity-based labeling of plant, mouse and fungal P450s. Both global profiling and transient expression can be used to detect a broad range of active P450s to study e.g. their regulation and discover selective inhibitors.


Subject(s)
Cytochrome P-450 Enzyme System , Fungal Proteins , Proteome , Animals , Cytochrome P-450 Enzyme System/metabolism , Cytochrome P-450 Enzyme System/genetics , Mice , Proteome/metabolism , Fungal Proteins/metabolism , Fungal Proteins/genetics , Ascomycota/metabolism , Plant Proteins/metabolism , Plant Proteins/genetics
2.
Case Rep Genet ; 2023: 9127430, 2023.
Article in English | MEDLINE | ID: mdl-38025940

ABSTRACT

Concurrent microduplication and microdeletion of the chromosome 22q11.2 region are a rarely reported phenomenon. We describe a case of germline 22q11.21 microduplication syndrome with concurrent mosaic 22q11.2 deletion in a pregnant patient, identified by chromosomal microarray and FISH after noninvasive prenatal genetic screening (cfDNA) results discordant with family history. The patient was referred to maternal-fetal medicine (MFM) at 14 weeks' gestation secondary to an SNP-based cfDNA result of a suspected maternal 22q11.2 deletion and a fetal risk of 1 in 2 for 22q11.2 deletion syndrome. The patient reported a similar cfDNA result in a previous pregnancy; however postnatal chromosomal microarray on that child identified an atypical 22q11.21 microduplication. We report the maternal chromosomal microarray findings of a germline 726 kb 22q11.21 duplication and a mosaic 1.33 Mb 22q11.2 deletion and highlight the copy number variant data generated by cfDNA in this unique case. This family adds to the limited literature of concurrent 22q11.2 microduplication and microdeletion carriers.

3.
Case Rep Genet ; 2023: 5958223, 2023.
Article in English | MEDLINE | ID: mdl-36879850

ABSTRACT

Despite increased prenatal and postnatal use of array comparative genomic hybridization (aCGH), isolated 8p23.1 duplication remains rare and has been associated with a widely variable phenotype. Here, we report an isolated 8p23.1 duplication in a fetus with an omphalocele and encephalocele that were incompatible with life. Prenatal aCGH demonstrated a 3.75 Mb de novo duplication of 8p23.1. This region encompassed 54 genes, 21 of which are described in OMIM, including SOX7 and GATA4. The summarized case demonstrates phenotypic features not previously described in 8p23.1 duplication syndrome and is reported in order to enhance understanding of the phenotypic variation.

4.
J Genet Couns ; 32(3): 540-557, 2023 06.
Article in English | MEDLINE | ID: mdl-36756860

ABSTRACT

Expanded carrier screening (ECS) intends to broadly screen healthy individuals to determine their reproductive chance for autosomal recessive (AR) and X-linked (XL) conditions with infantile or early-childhood onset, which may impact reproductive management (Committee Opinion 690, Obstetrics and Gynecology, 2017, 129, e35). Compared to ethnicity-based screening, which requires accurate knowledge of ancestry for optimal test selection and appropriate risk assessment, ECS panels consist of tens to hundreds of AR and XL conditions that may be individually rare in various ancestries but offer a comprehensive approach to inherited disease screening. As such, the term "equitable carrier screening" may be preferable. This practice guideline provides evidence-based recommendations for ECS using the GRADE Evidence to Decision framework (Guyatt et al., BMJ, 2008, 336, 995; Guyatt et al., BMJ, 2008, 336, 924). We used evidence from a recent systematic evidence review (Ramdaney et al., Genetics in Medicine, 2022, 20, 374) and compiled data from peer-reviewed literature, scientific meetings, and clinical experience. We defined and prioritized the outcomes of informed consent, change in reproductive plans, yield in identification of at-risk carrier pairs/pregnancies, perceived barriers to ECS, amount of provider time spent, healthcare costs, frequency of severely/profoundly affected offspring, incidental findings, uncertain findings, patient satisfaction, and provider attitudes. Despite the recognized barriers to implementation and change in management strategies, this analysis supported implementation of ECS for these outcomes. Based upon the current level of evidence, we recommend ECS be made available for all individuals considering reproduction and all pregnant reproductive pairs, as ECS presents an ethnicity-based carrier screening alternative which does not rely on race-based medicine. The final decision to pursue carrier screening should be directed by shared decision-making, which takes into account specific features of patients as well as their preferences and values. As a periconceptional reproductive risk assessment tool, ECS is superior compared to ethnicity-based carrier screening in that it both identifies more carriers of AR and XL conditions as well as eliminates a single race-based medical practice. ECS should be offered to all who are currently pregnant, considering pregnancy, or might otherwise biologically contribute to pregnancy. Barriers to the broad implementation of and access to ECS should be identified and addressed so that test performance for carrier screening will not depend on social constructs such as race.


Subject(s)
Counselors , Genetic Counseling , Pregnancy , Female , Humans , Child , Genetic Carrier Screening , Reproduction , Societies
5.
J Biotechnol ; 358: 64-66, 2022 Nov 10.
Article in English | MEDLINE | ID: mdl-36100138

ABSTRACT

The growth of resistance to multiple herbicides in grass weeds is a major threat to global cereal production and in the UK, is epitomized by the loss of control of blackgrass (Alopecurus myosuroides), causing losses in winter wheat production equating to 5% of national consumption. With an urgent need to develop new black-grass management tools, we have developed a lateral flow assay (LFA) that can predict resistance to multiple herbicides within 10 min.


Subject(s)
Herbicide Resistance , Herbicides , Herbicide Resistance/genetics , Herbicides/pharmacology , Pathology, Molecular , Poaceae/genetics , Triticum
6.
ACS Omega ; 7(20): 17416-17431, 2022 May 24.
Article in English | MEDLINE | ID: mdl-35647462

ABSTRACT

Safeners such as metcamifen and benoxacor are widely used in maize to enhance the selectivity of herbicides through the induction of key detoxifying enzymes, notably cytochrome P450 monooxygenases (CYPs). Using a combination of transcriptomics, proteomics, and functional assays, the safener-inducible CYPs responsible for herbicide metabolism in this globally important crop have been identified. A total of 18 CYPs belonging to clans 71, 72, 74, and 86 were safener-induced, with the respective enzymes expressed in yeast and screened for activity toward thiadiazine (bentazon), sulfonylurea (nicosulfuron), and triketone (mesotrione and tembotrione) chemistries. Herbicide metabolism was largely restricted to family CYP81A members from clan 71, notably CYP81A9, CYP81A16, and CYP81A2. Quantitative transcriptomics and proteomics showed that CYP81A9/CYP81A16 were dominant enzymes in safener-treated field maize, whereas only CYP81A9 was determined in sweet corn. The relationship between CYP81A sequence and activities were investigated by splicing CYP81A2 and CP81A9 together as a series of recombinant chimeras. CYP81A9 showed wide ranging activities toward the three herbicide chemistries, while CYP81A2 uniquely hydroxylated bentazon in multiple positions. The plasticity in substrate specificity of CYP81A9 toward multiple herbicides resided in the second quartile of its N terminal half. Further phylogenetic analysis of CYP81A9 showed that the maize enzyme was related to other CYP81As linked to agrochemical metabolism in cereals and wild grasses, suggesting this clan 71 CYP has a unique function in determining herbicide selectivity in arable crops.

7.
Prenat Diagn ; 42(4): 524-529, 2022 04.
Article in English | MEDLINE | ID: mdl-35224763

ABSTRACT

OBJECTIVE: We evaluated whether there is an association between ß-globin (HBB) pathogenic variants and fetal fraction (FF), and whether the association has a clinically relevant impact on non-invasive prenatal screening (NIPS). METHOD: A whole-genome sequencing NIPS laboratory database was retrospectively queried for women who underwent NIPS and carrier screening of both HBB and the α-globin genes (HBA1/HBA2). Women affected with either condition were excluded from the study, yielding a cohort size of 15,853. A "corrected FF" was obtained via multivariable linear regression adjusted for the systematic impacts of maternal age, gestational age and BMI. Corrected FF distributions of HBB and HBA1/HBA2 carriers were each compared to non-carriers using the Kolmogorov-Smirnov test. RESULTS: In this cohort, 291 women were carriers for HBB alone, and 1016 were carriers for HBA1/HBA2 alone. The HBB carriers had a lower corrected FF when compared to non-carriers (p < 0.0001). There was no difference in corrected FF among carriers and non-carriers of HBA1/HBA2. CONCLUSION: Carriers of pathogenic variants in the HBB gene, but not the HBA1/HBA2 genes, are more likely to have lower FF when compared to women with structurally normal hemoglobin. This decrease in FF could result in an elevated test-failure rate if FF thresholds were used.


Subject(s)
Hemoglobinopathies , Noninvasive Prenatal Testing , Female , Glycated Hemoglobin/genetics , Hemoglobinopathies/diagnosis , Hemoglobinopathies/genetics , Humans , Male , Pregnancy , Prenatal Care , Retrospective Studies
8.
Org Biomol Chem ; 19(42): 9211-9222, 2021 11 03.
Article in English | MEDLINE | ID: mdl-34643629

ABSTRACT

The evolution and growth of multiple-herbicide resistance (MHR) in grass weeds continues to threaten global cereal production. While various processes can contribute to resistance, earlier work has identified the phi class glutathione-S-transferase (AmGSTF1) as a functional biomarker of MHR in black-grass (Alopecurus myosuroides). This study provides further insights into the role of AmGSTF1 in MHR using a combination of chemical and structural biology. Crystal structures of wild-type AmGSTF1, together with two specifically designed variants that allowed the co-crystal structure determination with glutathione and a glutathione adduct of the AmGSTF1 inhibitor 4-chloro-7-nitro-benzofurazan (NBD-Cl) were obtained. These studies demonstrated that the inhibitory activity of NBD-Cl was associated with the occlusion of the active site and the impediment of substrate binding. A search for other selective inhibitors of AmGSTF1, using ligand-fishing experiments, identified a number of flavonoids as potential ligands. Subsequent experiments using black-grass extracts discovered a specific flavonoid as a natural ligand of the recombinant enzyme. A series of related synthetic flavonoids was prepared and their binding to AmGSTF1 was investigated showing a high affinity for derivatives bearing a O-5-decyl-α-carboxylate. Molecular modelling based on high-resolution crystal structures allowed a binding pose to be defined which explained flavonoid binding specificity. Crucially, high binding affinity was linked to a reversal of the herbicide resistance phenotype in MHR black-grass. Collectively, these results present a nature-inspired new lead for the development of herbicide synergists to counteract MHR in weeds.


Subject(s)
Herbicide Resistance
9.
J Contin Educ Health Prof ; 41(4): 286-288, 2021 10 01.
Article in English | MEDLINE | ID: mdl-34609356

ABSTRACT

ABSTRACT: Both patients and providers in the United States (US) suffer from burnout, which can impact the clinical relationship and quality of care. Among providers, burnout is a state of exhaustion including heightened depersonalization; among patients, burnout can negatively affect clinical outcomes. More than half of clinical providers in the United States suffer from burnout; less is known about the magnitude and prevalence among patients. Understanding patient burnout will improve our recognition of treatment barriers, understanding of patient-provider communication, and perceived quality of care. The purpose of the 2019 Stanford University MedicineX Burnout Workgroup was to use a collaborative approach to expand on the National Academy of Medicine (NAM) Wellness and Resilience Model, which does not currently include the patient as an influential member of the care team potentially experiencing burnout. This collaboration among patients, physicians, students, caregivers, technologists, and researchers used a convenience sample of conference attendees, broken into three focus groups to (1) provide an expanded definition of burnout that includes patients' perspectives, (2) analyze the NAM burnout model for inclusion of the patient experience, and (3) define a care experience that includes both patients and providers. The design of this workgroup was informed by Everyone Included, a model that recognizes and rejects hierarchical traditions in clinical practice. This approach allowed for the creation of a safe space for the exchange of knowledge between the various stakeholders. The resulting inclusive conceptual model, The Burnout Dyad, describes a cocreated care experience informed by both patient and provider characteristics.


Subject(s)
Burnout, Psychological , Humans
10.
Front Plant Sci ; 12: 636652, 2021.
Article in English | MEDLINE | ID: mdl-33747015

ABSTRACT

Non-target site resistance (NTSR) to herbicides in black-grass (Alopecurus myosuroides) results in enhanced tolerance to multiple chemistries and is widespread in Northern Europe. To help define the underpinning mechanisms of resistance, global transcriptome and biochemical analysis have been used to phenotype three NTSR black-grass populations. These comprised NTSR1 black-grass from the classic Peldon field population, which shows broad-ranging resistance to post-emergence herbicides; NTSR2 derived from herbicide-sensitive (HS) plants repeatedly selected for tolerance to pendimethalin; and NTSR3 selected from HS plants for resistance to fenoxaprop-P-ethyl. NTSR in weeds is commonly associated with enhanced herbicide metabolism catalyzed by glutathione transferases (GSTs) and cytochromes P450 (CYPs). As such, the NTSR populations were assessed for their ability to detoxify chlorotoluron, which is detoxified by CYPs and fenoxaprop-P-ethyl, which is acted on by GSTs. As compared with HS plants, enhanced metabolism toward both herbicides was determined in the NTSR1 and NTSR2 populations. In contrast, the NTSR3 plants showed no increased detoxification capacity, demonstrating that resistance in this population was not due to enhanced metabolism. All resistant populations showed increased levels of AmGSTF1, a protein functionally linked to NTSR and enhanced herbicide metabolism. Enhanced AmGSTF1 was associated with increased levels of the associated transcripts in the NTSR1 and NTSR2 plants, but not in NTSR3, suggestive of both pre- and post-transcriptional regulation. The related HS, NTSR2, and NTSR3 plants were subject to global transcriptome sequencing and weighted gene co-expression network analysis to identify modules of genes with coupled regulatory functions. In the NTSR2 plants, modules linked to detoxification were identified, with many similarities to the transcriptome of NTSR1 black-grass. Critical detoxification genes included members of the CYP81A family and tau and phi class GSTs. The NTSR2 transcriptome also showed network similarities to other (a)biotic stresses of plants and multidrug resistance in humans. In contrast, completely different gene networks were activated in the NTSR3 plants, showing similarity to the responses to cold, osmotic shock and fungal infection determined in cereals. Our results demonstrate that NTSR in black-grass can arise from at least two distinct mechanisms, each involving complex changes in gene regulatory networks.

11.
J Matern Fetal Neonatal Med ; 34(22): 3657-3661, 2021 Nov.
Article in English | MEDLINE | ID: mdl-31736384

ABSTRACT

OBJECTIVES: HBB-related significant hemoglobinopathies have been anecdotally associated with low fetal fraction on noninvasive prenatal screening (NIPS). We sought to compare the difference in fetal fraction using NIPS in women with HBB-related significant hemoglobinopathies (HSH) and women with normal hemoglobin. STUDY DESIGN: This is a retrospective case-control study. Cases were women with a diagnosis of HSH using NIPS from a commercial laboratory. The comparison group was women with hemoglobin AA from a tertiary care center database. We tested for differences in median fetal fraction using quantile regression analysis, adjusting for maternal body weight and gestational age. RESULTS: This study includes 35 women with clinically significant HSH and a comparison group of 636 women with hemoglobin AA. Adjusting for gestational age and body weight, the median fetal fraction was 4.1 point lower in the HSH than in the comparison group (ß - 4.1; 95% -5.7 to -2.5, p < .05). The rate of no-calls due to low fetal fraction was significantly higher in the clinically significant HSH group than in the comparison group [HSH: n = 9/35, 25.7% versus comparison: n = 32/636, 5.0% (p < .001)]. CONCLUSION: Women with HSH were more likely to have a lower fetal fraction and ultimately a five-fold higher no-call rate. What's already known about this topic?Low fetal fraction is one of the most common causes of no-call result in noninvasive prenatal screeningHigh maternal weight, early gestational age and fetal aneuploidies are associated with low fetal fraction What does this study add?HBB-related significant hemoglobinopathies are associated with low fetal fractionReduction in fetal fraction due to HBB-related significant hemoglobinopathies may also result in higher no-call rate.


Subject(s)
Hemoglobinopathies , Noninvasive Prenatal Testing , Aneuploidy , Case-Control Studies , Female , Hemoglobinopathies/diagnosis , Humans , Pregnancy , Prenatal Diagnosis , Retrospective Studies
12.
Pest Manag Sci ; 76(7): 2473-2482, 2020 Jul.
Article in English | MEDLINE | ID: mdl-32061023

ABSTRACT

BACKGROUND: Anisantha and Bromus spp. are widespread and difficult to control, potentially due to the evolution of herbicide resistance. In this study, UK populations of four brome species have been tested for the early development of resistance to acetolactate synthase (ALS)-inhibiting herbicides commonly used in their control. RESULTS: Glasshouse assays confirmed reduced sensitivity to ALS-inhibiting herbicides in single populations of A. diandra, B. commutatus and B. secalinus, and in three populations of A. sterilis. By contrast, all 60 brome populations tested were sensitive to the ACCase-inhibiting herbicide propaquizafop and glyphosate. Dose-response with two ALS herbicides showed broad-ranging resistance in the A. diandra, A. sterilis and B. commutatus populations. In the B. commutatus population, this was associated with a point mutation in the ALS enzyme conferring target site resistance (TSR). Additionally, resistant populations of A. sterilis and B. commutatus populations contained enhanced amounts of an orthologue of the glutathione transferase phi (F) class 1 (GSTF1) protein, a functional biomarker of nontarget site resistance (NTSR) in Alopecurus myosuroides. There was further evidence of NTSR as these plants also demonstrated an enhanced capacity to detoxify herbicides. CONCLUSION: This study confirms the evolution of resistance to ALS inhibiting herbicides in brome species in the UK by mechanisms consistent with the evolution of both TSR and NTSR. These findings point to the need for increased vigilance in detecting and mitigating against the evolution of herbicide resistance in brome species in Northern Europe. © 2020 Society of Chemical Industry.


Subject(s)
Bromus , Acetolactate Synthase , Herbicide Resistance , Herbicides , United Kingdom
13.
J Exp Bot ; 71(1): 411-421, 2020 01 01.
Article in English | MEDLINE | ID: mdl-31565749

ABSTRACT

The closely related sulphonamide safeners, metcamifen and cyprosulfamide, were tested for their ability to protect rice from clodinafop-propargyl, a herbicide normally used in wheat. While demonstrating that both compounds were equally bioavailable in planta, only metcamifen prevented clodinafop from damaging seedlings, and this was associated with the enhanced detoxification of the herbicide. Transcriptome studies in rice cultures demonstrated that whereas cyprosulfamide had a negligible effect on gene expression over a 4 h exposure, metcamifen perturbed the abundance of 590 transcripts. Changes in gene expression with metcamifen could be divided into three phases, corresponding to inductions occurring over 30 min, 1.5 h and 4 h. The first phase of gene induction was dominated by transcription factors and proteins of unknown function, the second by genes involved in herbicide detoxification, while the third was linked to cellular homeostasis. Analysis of the inducible genes suggested that safening elicited similar gene families to those associated with specific biotic and abiotic stresses, notably those elicited by abscisic acid, salicylic acid, and methyl jasmonate. Subsequent experiments with safener biomarker genes induced in phase 1 and 2 in rice cell cultures provided further evidence of similarities in signalling processes elicited by metcamifen and salicylic acid.


Subject(s)
Herbicide Resistance/physiology , Herbicides/pharmacology , Oryza/drug effects , Propionates/pharmacology , Pyridines/pharmacology , Gene Expression Regulation, Plant/drug effects , Oryza/physiology , Seedlings/drug effects , Seedlings/physiology , Transcription Factors/metabolism
14.
Neuropediatrics ; 50(2): 122-125, 2019 04.
Article in English | MEDLINE | ID: mdl-30650451

ABSTRACT

CASE: We report a 15-year-old Indian girl born to a consanguineous couple, who presented with epilepsy, developmental delay, neuroregression, and episodes of alternating hemiparesis. In addition, she had one episode of rhabdomyolysis at the age of 7 years. Extensive genetic and metabolic work up through the years was unrevealing. Eventually a trio whole exome sequencing (WES) revealed homozygous single nucleotide variants in TANGO2 gene. DISCUSSION: TANGO2 related recurrent metabolic crises with encephalomyopathy and cardiac arrhythmias were described very recently and only 15 cases were reported in literature at the time of writing. Alternating hemiplegia of childhood which was seen in our patient, has not been described in previous patients with TANGO2 mutation, and thereby expands the emerging phenotypic spectrum of this novel entity. This report also reiterates the utility of WES in diagnosing newly recognized neurogenetic conditions.


Subject(s)
Aryl Hydrocarbon Receptor Nuclear Translocator/genetics , Genetic Variation/genetics , Hemiplegia/diagnostic imaging , Hemiplegia/genetics , Phenotype , Polymorphism, Single Nucleotide/genetics , Adolescent , Female , Homozygote , Humans
15.
J Child Neurol ; 33(13): 832-836, 2018 11.
Article in English | MEDLINE | ID: mdl-30182801

ABSTRACT

Three children with drug-refractory epilepsy, normal magnetic resonance image (MRI), and a heterozygous SCN1A variant underwent 2-deoxy-2-[18F]fluoro-d-glucose positron emission tomography (FDG-PET) scanning between age 6 months and 1 year and then at age 3 years 6 months to 5 years 5 months. Regional FDG uptake values were compared to those measured in age- and gender-matched pseudo-controls. At baseline, the brain glucose metabolic pattern in the SCN1A group was similar to that of the pseudo-controls. At follow-up, robust decreases of normalized FDG uptake was found in bilateral frontal, parietal and temporal cortex, with milder decreases in occipital cortex. Children with epilepsy and an SCN1A variant have a normal pattern of cerebral glucose metabolism at around 1 year of age but develop bilateral cortical glucose hypometabolism by age 4 years, with maximal decreases in frontal, parietal, and temporal cortex. This metabolic pattern may be characteristic of epilepsy associated with SCN1A variants and may serve as a biomarker to monitor disease progression and response to treatments.


Subject(s)
Brain/metabolism , Epilepsy/genetics , Glucose Metabolism Disorders/genetics , Mutation/genetics , NAV1.1 Voltage-Gated Sodium Channel/genetics , Brain/diagnostic imaging , Child , Child, Preschool , Epilepsy/complications , Epilepsy/diagnostic imaging , Female , Fluorodeoxyglucose F18/pharmacokinetics , Glucose Metabolism Disorders/complications , Glucose Metabolism Disorders/diagnostic imaging , Humans , Longitudinal Studies , Male , Positron-Emission Tomography , Retrospective Studies
16.
BMJ Open ; 8(3): e020452, 2018 03 23.
Article in English | MEDLINE | ID: mdl-29572398

ABSTRACT

OBJECTIVES: While documented plans for patient and public involvement (PPI) in research are required in many grant applications, little is known about how frequently PPI occurs in practice. Low levels of reported PPI may mask actual activity due to limited PPI reporting requirements. This research analysed the frequency and types of reported PPI in the presence and absence of a journal requirement to include this information. DESIGN AND SETTING: A before and after comparison of PPI reported in research papers published in The BMJ before and 1 year after the introduction of a journal policy requiring authors to report if and how they involved patients and the public within their papers. RESULTS: Between 1 June 2013 and 31 May 2014, The BMJ published 189 research papers and 1 (0.5%) reported PPI activity. From 1 June 2015 to 31 May 2016, following the introduction of the policy, The BMJ published 152 research papers of which 16 (11%) reported PPI activity. Patients contributed to grant applications in addition to designing studies through to coauthorship and participation in study dissemination. Patient contributors were often not fully acknowledged; 6 of 17 (35%) papers acknowledged their contributions and 2 (12%) included them as coauthors. CONCLUSIONS: Infrequent reporting of PPI activity does not appear to be purely due to a failure of documentation. Reporting of PPI activity increased after the introduction of The BMJ's policy, but activity both before and after was low and reporting was inconsistent in quality. Journals, funders and research institutions should collaborate to move us from the current situation where PPI is an optional extra to one where PPI is fully embedded in practice throughout the research process.


Subject(s)
Patient Participation/methods , Publications/statistics & numerical data , Research Report , Editorial Policies , Humans , Patient Participation/economics , Periodicals as Topic
17.
Pest Manag Sci ; 74(4): 828-836, 2018 Apr.
Article in English | MEDLINE | ID: mdl-29330904

ABSTRACT

BACKGROUND: Herbicide safening in cereals is linked to a rapid xenobiotic response (XR), involving the induction of glutathione transferases (GSTs). The XR is also invoked by oxidized fatty acids (oxylipins) released during plant stress, suggesting a link between these signalling agents and safening. To examine this relationship, a series of compounds modelled on the oxylipins 12-oxophytodienoic acid and phytoprostane 1, varying in lipophilicity and electrophilicity, were synthesized. Compounds were then tested for their ability to invoke the XR in Arabidopsis and protect rice seedlings exposed to the herbicide pretilachlor, as compared with the safener fenclorim. RESULTS: Of the 21 compounds tested, three invoked the rapid GST induction associated with fenclorim. All compounds possessed two electrophilic carbon centres and a lipophilic group characteristic of both oxylipins and fenclorim. Minor effects observed in protecting rice seedlings from herbicide damage positively correlated with the XR, but did not provide functional safening. CONCLUSION: The design of safeners based on the characteristics of oxylipins proved successful in deriving compounds that invoke a rapid XR in Arabidopsis but not in providing classical safening in a cereal. The results further support a link between safener and oxylipin signalling, but also highlight species-dependent differences in the responses to these compounds. © 2018 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.


Subject(s)
Acetanilides/toxicity , Arabidopsis/genetics , Glutathione Transferase/metabolism , Herbicides/toxicity , Oryza/genetics , Oxylipins/adverse effects , Plant Proteins/genetics , Arabidopsis/drug effects , Arabidopsis/enzymology , Arabidopsis Proteins/genetics , Arabidopsis Proteins/metabolism , Glutathione Transferase/genetics , Oryza/drug effects , Oryza/enzymology , Plant Proteins/metabolism , Seedlings/drug effects , Seedlings/enzymology , Seedlings/genetics
18.
AJP Rep ; 8(1): e4-e6, 2018 Jan.
Article in English | MEDLINE | ID: mdl-29362687

ABSTRACT

Introduction Pentasomy 49,XXXXY is a sex chromosome anomaly difficult to be diagnosed prenatally. We describe a patient of pentasomy 49,XXXXY with false low-risk results using a noninvasive prenatal screening (NIPS). A 30-year-old G1P0 woman presented at 33 6/7 weeks, secondary to sonographic fetal anomalies. She had low-risk NIPS at 13 6/7 weeks. Anatomy survey showed bilateral clubfeet, clinodactyly of the left fifth digit, micropenis, and echogenic bowel. Cytogenetics analysis revealed pentasomy 49,XXXXY syndrome. We report third-trimester sonographic features of a fetus with pentasomy 49,XXXXY and the importance of thorough pre- and posttest counseling for NIPS.

19.
Plant Biotechnol J ; 16(1): 337-348, 2018 01.
Article in English | MEDLINE | ID: mdl-28640934

ABSTRACT

Plants contain large numbers of family 1 UDP-glucose-dependent glycosyltransferases (UGTs), including members that conjugate xenobiotics. Arabidopsis contains 107 UGT genes with 99 family members successfully expressed as glutathione transferase (GST)-fusion proteins in E. coli. A high-throughput catalytic screen was developed based on quantification of the fusion by measuring GST activity. UGT activity using UDP-glucose as donor was then determined using 11 synthetic acceptors bearing hydroxyl, amino and thiol groups that had been shown to undergo conjugation in plant extracts. In total, 44 UGTs, largely members of the D and E groups, were active towards xenobiotics, glucosylating phenol and thiol acceptors. In contrast, N-glucosyltransferase (NGT) activity was almost exclusively restricted to a single enzyme, UGT72B1. Using DNA microarrays, the induction of UGT transcripts following treatment with the herbicide safener fenclorim was compared in Arabidopsis and rice. D and L group members were the most safener-inducible UGTs in both species. The respective Arabidopsis enzymes showed low conjugating activity towards xenobiotics. Using Genevestigator, a small group of safened D and L UGTs were consistently induced in response to biotic and abiotic stress suggestive of protective activities beyond xenobiotic detoxification in both species. The induction of other detoxifying gene families following treatment with fenclorim, namely cytochromes P450 and glutathione transferases, further confirmed the selective enhancement of related subfamily members in the two species giving new insight into the safening response in cereals, where herbicide tolerance is enhanced compared with dicots, which are unresponsive to these treatments.


Subject(s)
Arabidopsis Proteins/metabolism , Arabidopsis/metabolism , Glutathione Transferase/metabolism , Oryza/metabolism , Arabidopsis/genetics , Arabidopsis Proteins/genetics , Cytochrome P-450 Enzyme System/genetics , Cytochrome P-450 Enzyme System/metabolism , Gene Expression Regulation, Plant/genetics , Gene Expression Regulation, Plant/physiology , Glutathione Transferase/genetics , Oryza/genetics , Substrate Specificity
20.
Online J Issues Nurs ; 20(3): 2, 2015 Sep 30.
Article in English | MEDLINE | ID: mdl-26882511

ABSTRACT

The 2013 addition of the Care Transition Measures to the Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) survey; enactment of the Patient Protection and Affordable Care Act (2010); and a greater focus on population health have brought a heightened awareness and need for action with patient transitions. Data are emerging from the additional Care Transition Measures and benchmarks have been developed. This article briefly describes the context of care transition. We describe the journey of Indiana University Health North Hospital to overcome patient care transition obstacles, ultimately achieving designation as a top performer. We will discuss our efforts to personalize patient outcomes and transition through activation and improve transitions for vulnerable populations, specifically in the bariatric and orthopedic patient populations. The article concludes with discussion of overcoming obstacles and future directions with continued focus on collaboration and improvement.


Subject(s)
Hospital Administration , Outcome and Process Assessment, Health Care , Patient Transfer/methods , Professional-Patient Relations , Communication , Health Services Accessibility , Indiana , Interprofessional Relations , Organizational Objectives , Patient Discharge , Patient Satisfaction , Patient Transfer/organization & administration , Quality of Health Care
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