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  1. Article: Improved in vitro wound healing in response to a superoxidised solution.

    Daly, Kristian / Ball, Christopher / Thomas, Hannah / Krishnen, Ranjeni

    Journal of wound care

    2024  Volume 33, Issue Sup4, Page(s) S4–S13

    Abstract: Objective: This study assessed wound healing in response to a superoxidised solution using an in vitro wound healing model.: Method: Prewounded reconstructed full-thickness human skin models were treated with 10µl of either superoxidised solution ( ... ...

    Abstract Objective: This study assessed wound healing in response to a superoxidised solution using an in vitro wound healing model.
    Method: Prewounded reconstructed full-thickness human skin models were treated with 10µl of either superoxidised solution (Hydrocyn aqua, Bactiguard South East Asia Sdn. Bhd., Malaysia) or Dulbecco's phosphate buffered saline (DPBS) and incubated at 37°C for up to seven days, with additional treatments added every 48 hours. On days 0, 1, 2, 5 and 7, triplicate samples were taken for specific immunostaining against cytokeratin 14 and vimentin. At each timepoint, horizontal and vertical wound diameters were measured to demonstrate wound closure. Maintenance media was taken at the same timepoints for the measurement of secreted proinflammatory cytokines interleukin (IL)-1β, IL-6 and tumour necrosis factor (TNF)-ɑ.
    Results: At day 1, the superoxidised solution induced significantly lower diameter measurements compared with baseline data at day 0. Both treatment groups demonstrated significantly lower diameter measurements by day 2 when compared with the baseline; however, the average wound size of samples treated with the superoxidised solution was significantly lower when compared to the DPBS-treated group (p<0.05). No significant difference in expression of any proinflammatory was identified at any timepoint.
    Conclusion: Application of the superoxidised solution resulted in significantly improved wound closure over the first 48 hours in comparison to DPBS-treatment. Furthermore, application of the superoxidised solution did not induce significant proinflammatory effects, despite the significantly reduced wound diameter.
    MeSH term(s) Humans ; Wound Healing ; Skin/injuries ; Cytokines ; Malaysia
    Chemical Substances Cytokines
    Language English
    Publishing date 2024-04-04
    Publishing country England
    Document type Journal Article
    ZDB-ID 1353951-6
    ISSN 0969-0700
    ISSN 0969-0700
    DOI 10.12968/jowc.2024.33.Sup4.S4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Brief Report: Convergence and Discrepancy Between Self- and Informant-Reported Depressive Symptoms in Young Autistic Adults.

    Thomas, Hannah R / Sirsikar, Aditi / Eigsti, Inge-Marie

    Journal of autism and developmental disorders

    2024  

    Abstract: Purpose: Autistic individuals exhibit elevated rates of depression; however, assessment is complicated by clinical presentations and limited validation in this population. Recent work has demonstrated the utility of the Beck Depression Inventory (BDI-II) ...

    Abstract Purpose: Autistic individuals exhibit elevated rates of depression; however, assessment is complicated by clinical presentations and limited validation in this population. Recent work has demonstrated the utility of the Beck Depression Inventory (BDI-II) in screening for depression in ASD. The current study extends this work by examining the convergence and divergence of self- and informant-reported depression in autistic (n = 258) and non-autistic (n = 255) young adults.
    Methods: Participants completed the BDI-II as a self-report measure of depression; informants completed the Achenbach Adult Behavior Checklist. Analyses probed for between-group differences in rates of depression symptoms, convergence between self- and informant-reported depression, and discrepancy between self- and informant-reported depression.
    Results: Results indicated significantly higher rates of depressive symptoms in the autistic group. Convergence was significant in both groups, with significantly greater agreement in the autistic group. There was differential divergence, with the autistic group reporting significantly lower scores relative to informants, and the non-autistic group reporting significantly higher scores relative to informants.
    Conclusions: Consistent with prior reports, results suggest that depression rates are elevated in autism. Additionally, while the BDI-II may be adequate for screening depressive symptoms in speaking autistic young adults, eliciting information from a close adult informant provides valuable diagnostic information, due to clinically critical concerns about underreporting in this population. Although controlled in analyses, between-group differences in gender, age, race, and informant identity, and a predominantly White and non-Latinx sample, limit the generalizability of these results.
    Language English
    Publishing date 2024-01-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 391999-7
    ISSN 1573-3432 ; 0162-3257
    ISSN (online) 1573-3432
    ISSN 0162-3257
    DOI 10.1007/s10803-023-06230-0
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  3. Article ; Online: Anatomical and biophysical basis for graft incompatibility within the Solanaceae.

    Thomas, Hannah R / Gevorgyan, Alice / Frank, Margaret H

    Journal of experimental botany

    2023  Volume 74, Issue 15, Page(s) 4461–4470

    Abstract: Interspecies grafting is an economically relevant technique that allows beneficial shoot and root combinations from separate species to be combined. One hypothesis for the basis of graft compatibility revolves around taxonomic relatedness. To test how ... ...

    Abstract Interspecies grafting is an economically relevant technique that allows beneficial shoot and root combinations from separate species to be combined. One hypothesis for the basis of graft compatibility revolves around taxonomic relatedness. To test how phylogenetic distance affects interspecific graft compatibility within the economically important Solanaceae subfamily, Solanoideae, we characterized the anatomical and biophysical integrity of graft junctions between four species: tomato (Solanum lycopersicum), eggplant (Solanum melongena), pepper (Capsicum annuum), and groundcherry (Physalis pubescens). We analyzed the survival, growth, integrity, and cellular composition of the graft junctions. Utilizing various techniques, we were able to quantitatively assess compatibility among the interspecific grafts. Even though most of our graft combinations could survive, we show that only intrageneric combinations between tomato and eggplant are compatible. Unlike incompatible grafts, the formation of substantial vascular reconnections between tomato and eggplant in the intrageneric heterografts likely contributed to biophysically stable grafts. Furthermore, we identified 10 graft combinations that show delayed incompatibility, providing a useful system to pursue deeper work into graft compatibility. This work provides new evidence that graft compatibility may be limited to intrageneric combinations within the Solanoideae subfamily. Further research amongst additional Solanaceous species can be used to test the extent to which our hypothesis applies to this family.
    MeSH term(s) Solanaceae/genetics ; Phylogeny ; Solanum lycopersicum/genetics ; Capsicum/genetics ; Solanum melongena/genetics
    Language English
    Publishing date 2023-04-27
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2976-2
    ISSN 1460-2431 ; 0022-0957
    ISSN (online) 1460-2431
    ISSN 0022-0957
    DOI 10.1093/jxb/erad155
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  4. Article ; Online: A new era in child maltreatment prevention: call to action.

    Mathews, Ben / Thomas, Hannah J / Scott, James G

    The Medical journal of Australia

    2023  Volume 218 Suppl 6, Page(s) S47–S51

    MeSH term(s) Child ; Humans ; Child Abuse/prevention & control ; Child Welfare
    Language English
    Publishing date 2023-03-31
    Publishing country Australia
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 186082-3
    ISSN 1326-5377 ; 0025-729X
    ISSN (online) 1326-5377
    ISSN 0025-729X
    DOI 10.5694/mja2.51872
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  5. Article ; Online: The unique role of adolescent internalizing and externalizing problems, and maternal-adolescent communication in their association with attachment in early adulthood.

    Blake, Julie A / Thomas, Hannah J / Pelecanos, Anita M / Najman, Jake M / Scott, James G

    Acta psychologica

    2024  Volume 246, Page(s) 104273

    Abstract: Attachment styles influence mental health and relationships through life. Few studies examine the adolescent factors associated with adult attachment styles. This paper examines the association between adolescent emotional and behavioral problems and ... ...

    Abstract Attachment styles influence mental health and relationships through life. Few studies examine the adolescent factors associated with adult attachment styles. This paper examines the association between adolescent emotional and behavioral problems and maternal-adolescent communication with attachment style in early adulthood. Data from 3423 participants in a birth cohort study were examined. At 14-years, participants' mothers completed the Parent-Adolescent Communication Scale. Participants completed the Youth Self-Report at 14-years which measures internalizing and externalizing symptoms, and the Attachment Style Questionnaire (ASQ) at 21-years. The ASQ comprises five domains of internal working models of interpersonal relationships and attachment style: confidence (security), discomfort with closeness and relationships as secondary (avoidance), need for approval and preoccupation with relationships (anxiety). Associations were examined using general linear models. After adjustments, internalizing symptoms score was associated with all domains of attachment and externalizing symptoms score was associated with four domains of attachment insecurity, but not attachment security. Low openness in maternal-adolescent communication was most strongly associated with decreased confidence and high problem maternal-adolescent communication was associated with viewing relationships as secondary. Adolescents with emotional and behavioral problems and maternal-adolescent communication may benefit from attachment-based interventions to support the development of healthy relationships and attachments in young adulthood.
    MeSH term(s) Humans ; Adolescent ; Female ; Object Attachment ; Mother-Child Relations ; Male ; Young Adult ; Adolescent Behavior/physiology ; Communication ; Surveys and Questionnaires ; Adult ; Problem Behavior/psychology
    Language English
    Publishing date 2024-04-17
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1480049-4
    ISSN 1873-6297 ; 0001-6918
    ISSN (online) 1873-6297
    ISSN 0001-6918
    DOI 10.1016/j.actpsy.2024.104273
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  6. Article ; Online: Pregnancy preparation: redistribution of CCR7-positive cells in the rat uterus.

    Thomas, Hannah / McCloskey, Erick / Rider, Virginia

    Reproduction (Cambridge, England)

    2022  Volume 164, Issue 4, Page(s) 183–193

    Abstract: In brief: Changes in the endometrium prior to implantation may be critical in predicting pregnancy outcomes. This study shows that the endocrine system directs positional changes in CCR7+ cells before implantation, which may be critical for developing ... ...

    Abstract In brief: Changes in the endometrium prior to implantation may be critical in predicting pregnancy outcomes. This study shows that the endocrine system directs positional changes in CCR7+ cells before implantation, which may be critical for developing maternal tolerance.
    Abstract: Suppression of the maternal immune system is vital for the implantation of the semi-allogeneic embryo. Although progress in understanding the dialogue between mother and embryo has been made, key interactions between maternal immune cells, hormones, and chemokines remain elusive. Uterine expression of the C-C chemokine receptor type 7 (CCR7) could recruit T regulatory cells and facilitate localized immune suppression. To test this concept, Ccr7 mRNA and protein were assessed in uterine tissue. Ccr7 mRNA expression peaked at day 4 in pregnant rat uteri and then declined at days 5 and 6. CCR7 protein showed similar quantitative changes. To test if female sex steroids affected the spatial distribution of CCR7-expressing cells, uteri from ovariectomized rats, progesterone-pretreated rats (2 mg daily), and progesterone-pretreated rats injected with estradiol (0.2 µg) were analyzed. Progesterone increased CCR7-positive (+) cells in the antimesometrial stroma. Progesterone and estradiol increased CCR7+ cells in the mesometrial stroma. Estradiol increased the density of cluster of differentiation 4 (CD4) positive cells in the mesometrial stromal region over progesterone alone. The density of cells expressing the T regulatory cell marker, forkhead box protein 3 (FOXP3), increased in the antimesometrial stroma in response to progesterone alone. Progesterone and estradiol increased FOXP3+ cells in the antimesometrial region of the stroma. Co-localization of CCR7, CD4, and FOXP3 in the stroma suggests CCR7+ cells are T regulatory cells. Polarization of CCR7+ cells in the endometrial stroma was an intrinsic response regulated by sex steroids and did not require the presence of an embryo.
    MeSH term(s) Animals ; Embryo Implantation ; Endometrium/metabolism ; Estradiol/metabolism ; Estradiol/pharmacology ; Female ; Forkhead Transcription Factors/metabolism ; Humans ; Ovariectomy ; Pregnancy ; Progesterone/metabolism ; Progesterone/pharmacology ; RNA, Messenger/metabolism ; Rats ; Receptors, CCR7/genetics ; Receptors, CCR7/metabolism ; Uterus/metabolism
    Chemical Substances CCR7 protein, human ; Forkhead Transcription Factors ; RNA, Messenger ; Receptors, CCR7 ; Progesterone (4G7DS2Q64Y) ; Estradiol (4TI98Z838E)
    Language English
    Publishing date 2022-09-23
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2034501-X
    ISSN 1741-7899 ; 1470-1626 ; 1476-3990
    ISSN (online) 1741-7899
    ISSN 1470-1626 ; 1476-3990
    DOI 10.1530/REP-22-0074
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  7. Article: Graft incompatibility between pepper and tomato can be attributed to genetic incompatibility between diverged immune systems.

    Thomas, Hannah Rae / Gevorgyan, Alice / Hermanson, Alexandra / Yanders, Samantha / Erndwein, Lindsay / Norman-Ariztía, Matthew / Sparks, Erin E / Frank, Margaret H

    bioRxiv : the preprint server for biology

    2024  

    Abstract: Graft compatibility is the capacity of two plants to form cohesive vascular connections. Tomato and pepper are incompatible graft partners; however, the underlying cause of graft rejection between these two species remains unknown.We diagnosed graft ... ...

    Abstract Graft compatibility is the capacity of two plants to form cohesive vascular connections. Tomato and pepper are incompatible graft partners; however, the underlying cause of graft rejection between these two species remains unknown.We diagnosed graft incompatibility between tomato and diverse pepper varieties based on weakened biophysical stability, decreased growth, and persistent cell death using trypan blue and TUNEL assays. Transcriptomic analysis of cell death in the junction was performed using RNA-sequencing, and molecular signatures for incompatible graft response were characterized based on meta-transcriptomic comparisons with other biotic processes.We show that tomato is broadly incompatible with diverse pepper cultivars. These incompatible graft partners activate prolonged transcriptional changes that are highly enriched for defense processes. Amongst these processes was broad NLR upregulation and hypersensitive response. Using transcriptomic datasets for a variety of biotic stress treatments, we identified a significant overlap in the genetic profile of incompatible grafting and plant parasitism. In addition, we found over 1000 genes that are uniquely upregulated in incompatible grafts.Based on NLR overactivity, DNA damage, and prolonged cell death we have determined that tomato and pepper graft incompatibility is likely caused by a form of genetic incompatibility, which triggers a hyperimmune-response.
    Language English
    Publishing date 2024-04-01
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2024.03.29.587379
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  8. Article ; Online: Cardiac functional adaptation to resistance and endurance exercise training: a randomized crossover study.

    Green, Daniel J / Marsh, Channa E / Thomas, Hannah J / Maslen, Barbara A / Collis, Julie / Lester, Leanne / Naylor, Louise H

    American journal of physiology. Heart and circulatory physiology

    2024  Volume 326, Issue 4, Page(s) H929–H937

    Abstract: Few training studies have assessed the impact of different modes of exercise on changes in cardiac function. This study investigated changes in left ventricular (LV) systolic and diastolic function following endurance (END) and resistance (RES) training ... ...

    Abstract Few training studies have assessed the impact of different modes of exercise on changes in cardiac function. This study investigated changes in left ventricular (LV) systolic and diastolic function following endurance (END) and resistance (RES) training in healthy participants. Sixty-four individuals participated in a randomized crossover design trial, involving 12 wk of END and RES training, separated by a 12-wk washout. Echocardiograms assessed systolic function [ejection fraction (EF) and global longitudinal strain (GLS)], diastolic function [mitral valve early velocity (E), tissue Doppler velocity (e'), their ratio (E/e')], and left atrial volume indexed to body surface area (LA ESVi). LV mass (LVM) increased with both RES (Δ5.3 ± 11.9,
    MeSH term(s) Humans ; Cross-Over Studies ; Ventricular Function, Left/physiology ; Echocardiography ; Exercise ; Exercise Therapy
    Language English
    Publishing date 2024-02-09
    Publishing country United States
    Document type Randomized Controlled Trial ; Journal Article
    ZDB-ID 603838-4
    ISSN 1522-1539 ; 0363-6135
    ISSN (online) 1522-1539
    ISSN 0363-6135
    DOI 10.1152/ajpheart.00579.2023
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  9. Article ; Online: Connecting the pieces: uncovering the molecular basis for long-distance communication through plant grafting.

    Thomas, Hannah R / Frank, Margaret H

    The New phytologist

    2019  Volume 223, Issue 2, Page(s) 582–589

    Abstract: Vascular plants are wired with a remarkable long-distance communication system. This network can span from as little as a few centimeters (or less) in species like Arabidopsis, up to 100 m in the tallest giant sequoia, linking distant organ systems into ... ...

    Abstract Vascular plants are wired with a remarkable long-distance communication system. This network can span from as little as a few centimeters (or less) in species like Arabidopsis, up to 100 m in the tallest giant sequoia, linking distant organ systems into a unified, multicellular organism. Grafting is a fundamental technique that allows researchers to physically break apart and reassemble the long-distance transport system, enabling the discovery of molecular signals that underlie intraorganismal communication. In this review, we highlight how plant grafting has facilitated the discovery of new long-distance signaling molecules that function in coordinating developmental transitions, abiotic and biotic responses, and cross-species interactions. This rapidly expanding area of research offers sustainable approaches for improving plant performance in the laboratory, the field, the orchard, and beyond.
    MeSH term(s) Droughts ; MicroRNAs/genetics ; MicroRNAs/metabolism ; Plant Development ; Plants/metabolism ; Seasons ; Signal Transduction
    Chemical Substances MicroRNAs
    Language English
    Publishing date 2019-03-30
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 208885-x
    ISSN 1469-8137 ; 0028-646X
    ISSN (online) 1469-8137
    ISSN 0028-646X
    DOI 10.1111/nph.15772
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  10. Article ; Online: A two-generation study of attachment in mothers and their young adult offspring: Latent classes of attachment and associations with anxiety and depression.

    Blake, Julie A / Thomas, Hannah J / Hurst, Cameron P / Pelecanos, Anita M / McGee, Tara Renae / Najman, Jake M / Scott, James G

    Journal of affective disorders

    2024  Volume 358, Page(s) 361–368

    Abstract: Background: Evidence supports the conceptualization of adult attachment as existing along a continuum of attachment security and insecurity; however, ongoing debates persist regarding the use of categorical versus continuous approaches to studying ... ...

    Abstract Background: Evidence supports the conceptualization of adult attachment as existing along a continuum of attachment security and insecurity; however, ongoing debates persist regarding the use of categorical versus continuous approaches to studying attachment. Attachment data collected from a large community sample of mothers and their offspring in young adulthood were used to examine i) latent classes of adult attachment, ii) associations between mother and offspring attachment, iii) the relationship between adult attachment and mental health symptoms.
    Methods: Mothers and offspring were each administered the Attachment Style Questionnaire when offspring were aged 21-years. Latent class analyses (LCA) were performed to examine response patterns across ASQ items. Associations between mothers' and offspring attachment, and correlations between attachment domains and depression/anxiety subscales were examined.
    Results: LCA identified four latent classes across a continuum of secure and insecure attachment rather than four distinct adult attachment styles. Anxious attachment subscales correlated strongly with depression/anxiety symptoms in both cohorts. Mothers' attachment was significantly but weakly correlated with their young adult offspring attachment.
    Limitations: Attachment was measured at one time point and as such, a causal maternal-offspring attachment relationship could not be established.
    Conclusions: Findings support a dimensional view of attachment security and insecurity over a four-category model of adult attachment. Attachment correlated with anxiety and depressive symptoms and highlights the importance of considering adult attachment when addressing mental health. There was limited evidence of a relationship between middle aged mothers and their offspring in young adulthood, suggesting other factors influence attachment in adulthood.
    Language English
    Publishing date 2024-05-10
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 135449-8
    ISSN 1573-2517 ; 0165-0327
    ISSN (online) 1573-2517
    ISSN 0165-0327
    DOI 10.1016/j.jad.2024.05.046
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