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1.
Womens Health Rep (New Rochelle) ; 5(1): 259-266, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38516651

RESUMO

Objectives: Cervical cancer screening rates have stagnated, but self-sampling modalities have the potential to increase uptake. This study compares the test characteristics of self-sampled high-risk human papillomavirus (hrHPV) tests with clinician-collected hrHPV tests in average-risk (i.e., undergoing routine screening) and high-risk patients (i.e., receiving follow-up after abnormal screening results). Methods: In this cross-sectional study, a relatively small cohort of average-risk (n = 35) and high-risk (n = 12) participants completed both clinician-collected and self-sampled hrHPV testing, along with a brief phone survey. We assessed hrHPV positivity, concordance, positive predictive value (PPV), negative predictive value (NPV), sensitivity, and specificity across both methods (for types 16, 18, or other hrHPV). We also explored the relationship between test concordance and sociodemographic/behavioral factors. Results: Among average-risk participants, hrHPV positivity was 6% for both test methods (i.e., hrHPV-positive cases: n = 2), resulting in reported concordance, PPV, NPV, sensitivity, and specificity of 100%. Among high-risk participants, hrHPV positivity was 100% for clinician-collected tests but only 67% for self-sampled tests, showing varied concordance and sensitivity. Concordance was not associated with sociodemographic or behavioral factors. Conclusions: Self-sampled hrHPV testing demonstrated high accuracy for average-risk patients in this exploratory study. However, its performance was less consistent in high-risk patients who had already received an abnormal screening result, which could be attributed to spontaneous viral clearance over time. The limited number of participants, particularly HPV-positive cases, suggests caution in interpreting these results. Further research with larger cohorts is necessary to validate these findings and to explore the integration of self-sampled hrHPV testing into routine clinical care, particularly for patients with a history of cervical abnormalities. Clinical Trial Registration: NCT04591977, NCT04585243.

2.
Cancer Control ; 31: 10732748241237328, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38454302

RESUMO

INTRODUCTION: Human papillomavirus (HPV) vaccination rates are lower than other recommended adolescent vaccines. Cancer survivor narratives are used to promote cancer prevention and control, but little is known about their impact on adolescent HPV vaccination. OBJECTIVE: This pilot study explored the feasibility and effects of a video education intervention using a cancer survivor narrative to improve parents' attitudes toward and intentions to get the HPV vaccine. METHODS: This study utilized a one-group design; participants completed a pre-intervention survey, watched the video before attending their sons' wellness visits, and completed a post-intervention survey within one week of their appointment. Using the narrative persuasion framework, we developed a 4-minute video of a local HPV-related cancer survivor to promote the HPV vaccine as cancer prevention. We recruited 37 participants between June and October 2020. Participants were parents of males ages 9-17 who had not yet initiated HPV vaccination. RESULTS: After the video, more parents agreed that HPV vaccination is safe (pre: 66% vs. post: 82%; P = .045) and that their child's chances of getting HPV-related cancer in the future are high (pre: 24% vs. post: 46%; P = .014). Overall, 91% of parents felt the cancer survivor story helped them understand the risks of HPV cancers, and 52% said the story influenced their decision to start HPV vaccination for their child. CONCLUSIONS: Our findings suggest that cancer survivor narratives influence parents' vaccine opinions and understanding of their child's risk of HPV infection, leading to increased parental intent to get the HPV vaccine for their adolescent males.


Assuntos
Sobreviventes de Câncer , Neoplasias , Infecções por Papillomavirus , Vacinas contra Papillomavirus , Masculino , Adolescente , Criança , Humanos , Projetos Piloto , Vacinas contra Papillomavirus/uso terapêutico , Infecções por Papillomavirus/complicações , Infecções por Papillomavirus/prevenção & controle , Intenção , Neoplasias/prevenção & controle , Conhecimentos, Atitudes e Prática em Saúde
3.
Aging Cell ; 22(12): e14027, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38009412

RESUMO

The NAD+ -dependent deacylase family of sirtuin enzymes have been implicated in biological ageing, late-life health and overall lifespan, though of these members, a role for sirtuin-2 (SIRT2) is less clear. Transgenic overexpression of SIRT2 in the BubR1 hypomorph model of progeria can rescue many aspects of health and increase overall lifespan, due to a specific interaction between SIRT2 and BubR1 that improves the stability of this protein. It is less clear whether SIRT2 is relevant to biological ageing outside of a model where BubR1 is under-expressed. Here, we sought to test whether SIRT2 over-expression would impact the overall health and lifespan of mice on a nonprogeroid, wild-type background. While we previously found that SIRT2 transgenic overexpression prolonged female fertility, here, we did not observe any additional impact on health or lifespan, which was measured in both male and female mice on standard chow diets, and in males challenged with a high-fat diet. At the biochemical level, NMR studies revealed an increase in total levels of a number of metabolites in the brain of SIRT2-Tg animals, pointing to a potential impact in cell composition; however, this did not translate into functional differences. Overall, we conclude that strategies to enhance SIRT2 protein levels may not lead to increased longevity.


Assuntos
Longevidade , Sirtuína 2 , Animais , Feminino , Masculino , Camundongos , Envelhecimento/genética , Animais Geneticamente Modificados/metabolismo , Encéfalo/metabolismo , Longevidade/genética , Sirtuína 2/genética , Sirtuína 2/metabolismo
4.
Cureus ; 15(7): e41426, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37546095

RESUMO

Topically applied compounds containing camphor and menthol have been used to alleviate pain, cold symptoms, and pruritus, historically predominantly in East Asia. Being not studied well, they are less recognized in Western medicine. Given the commonality of pain, pruritus, and cold symptoms in addition to the growing need for non-opioid treatment options, the authors investigated clinical applications of such compounds for their over-counter usage. The purpose was to analyze current clinical research and applications regarding the use of these topical agents. This study involved a bibliometric analysis of peer-reviewed articles, published in English and indexed in PubMed from 2010 to 2022, pertaining to camphor- and menthol-containing compounds. There were 103 results, of which 15 (14.6%) articles were related to the treatment of disorders related to health, such as upper respiratory infection, pain, and pruritus. Excluded were "non-research" articles (e.g., letters to the editor), articles that do not involve human subjects, reports of improper application or misuse (e.g., ingestion), and articles pertaining to intraoral, intranasal, and ophthalmic agents. Of these articles, the originating journals, respective journal impact factor scores, publication years, study designs, and study topics were identified. Underlying trends and themes regarding clinically relevant research on these compounds were subsequently discerned. Based on this analysis, topical agents containing camphor and menthol are potentially effective at treating pain, upper respiratory infection symptoms, and pruritus in addition to potentially functioning as an antimicrobial. However, with a limited number of studies addressing these compounds' uses in each application, no definitive recommendation can be made regarding their use. Given the promising results of earlier studies, the authors recommend that more primary research, particularly randomized, double-blind controlled studies, be done regarding clinical applications of these substances.

5.
Pacing Clin Electrophysiol ; 46(9): 1073-1076, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37585344

RESUMO

BACKGROUND: Loop recorder implants may have value in pediatric patients; however, size limitations exist due to the risk of erosion. METHODS: Retrospective review of five patients who underwent subscapular loop recorder implantation were reviewed. RESULTS: No complications occurred. Stable R-waves were noted but could be positional but with adequate diagnostics provided. CONCLUSION: Subscapular loop recorder implantation is feasible in patients as young as 3 months of age.


Assuntos
Eletrocardiografia Ambulatorial , Síncope , Humanos , Criança , Síncope/etiologia , Próteses e Implantes/efeitos adversos , Estudos Retrospectivos , Pacientes
6.
Pacing Clin Electrophysiol ; 46(8): 824-826, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-37377384

RESUMO

BACKGROUND: The Aveir device allows retrievability and mapping prior to fixation over alternative leadless pacemakers. CASE SUMMARY: We describe the first case of Aveir leadless pacemaker implantation into a 44.5 kg, pediatric patient with symptomatic sinus dysfunction. Access by the right internal jugular vein (RIJ) with 1st attempt implantation into the septal location. DISCUSSION: Placement of the Aveir leadless pacemaker is feasible in a 44.5 kg pediatric patient via a RIJ approach.


Assuntos
Veias Jugulares , Marca-Passo Artificial , Humanos , Criança , Estimulação Cardíaca Artificial , Veias Braquiocefálicas
7.
Indian Pacing Electrophysiol J ; 23(2): 39-44, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36681117

RESUMO

BACKGROUND: We demonstrate a case series of 8 pediatric patients, all under 30 kg, who had leadless pacemaker implants via the internal jugular vein. METHODS: A retrospective review of pediatric leadless pacing placement via the internal jugular vein at the University of Minnesota Masonic Children's Hospital and UC Davis Medical Center from 2018 through 2021 was performed. Rationales for pacing, demographics of patients, pacing thresholds, and longevity of devices were recorded. RESULTS: Eight internal jugular pacemaker insertions were performed successfully in patients weighing between 10.9 kg and 29 kg. Five patients had Micra implantation via the right internal jugular vein, whereas 3 patients had insertion via the left internal jugular vein. No surgical cut-downs were performed. No venous complications occurred. Up to 3 years of follow-up were noted. CONCLUSION: Leadless pacemaker implantation, via left or right internal jugular veins, is feasible without surgical cutdown in patients <30 kg.

8.
World Neurosurg ; 170: e283-e291, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36356842

RESUMO

OBJECTIVE: To determine the predictive value of the modified Frailty Index (mFI) in evaluating sarcopenia and clinical outcomes in patients undergoing 1-level or 2-level transforaminal lumbar interbody fusion (TLIF). METHODS: Patients who underwent a 1-level or 2-level TLIF between 2012 and 2020 were retrospectively identified. Frailty was compared among groups using mFI, and sarcopenia was classified by the psoas muscle cross-sectional area. Bivariate statistics compared demographics, comorbidities, and clinical outcomes. A linear regression model was developed using the Charlson Comorbidity Index (CCI) or mFI as independent variables to determine potential predictors for improvement in 1-year patient-reported outcomes. RESULTS: Of 488 included patients, 60 were severely frail and 60 patients had sarcopenia, but sarcopenia was not associated with patient frailty (P = 0.469). Severely frail patients had worse baseline Oswestry Disability Index (ODI) (P < 0.001), Mental Component Score-12 (P = 0.001), and Physical Component Score-12 (P < 0.001), and worse improvement in ODI (P = 0.037), Physical Component Score-12 (P < 0.001), and visual analog scale (VAS) back (P = 0.007). mFI was an independent predictor of poorer improvement in VAS back and ODI, whereas age + CCI in addition predicted poorer improvement in VAS leg. Patients with higher mFI experienced longer length of stay, less frequent home discharge, and higher rates of complications, but similar readmission and reoperation rates. CONCLUSIONS: Frailer patients experience poorer improvement in back pain, physical functioning, and disability after TLIF. mFI and the combination of age and CCI comparably predict patient-reported outcomes but do not correlate to baseline sarcopenia. Frailty increased the risk of complications, length of hospital stay, and risk of nonhome discharge.


Assuntos
Fragilidade , Sarcopenia , Fusão Vertebral , Humanos , Vértebras Lombares/cirurgia , Resultado do Tratamento , Fragilidade/complicações , Fragilidade/epidemiologia , Estudos Retrospectivos , Fusão Vertebral/efeitos adversos , Sarcopenia/complicações , Sarcopenia/epidemiologia , Procedimentos Cirúrgicos Minimamente Invasivos
9.
Ophthalmic Genet ; 44(2): 198-203, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-35834361

RESUMO

BACKGROUND: Retinopathy of prematurity (ROP) and familial exudative vitreoretinopathy (FEVR) are two distinct pathologies of retinal angiogenesis with overlapping clinical features. METHODS: Examination, multimodal imaging, and genetic testing were used to guide diagnosis and treatment. RESULTS: We report a combined phenotype of X-linked FEVR and ROP in a 4-month-old girl with mosaic Turner syndrome with ring X chromosome born at 26 weeks gestational age. She was initially diagnosed with atypical ROP with a vitreous band causing a localized traction retinal detachment, inferotemporal to the macula in the right eye, vessels to posterior zone 2 with no clear ridge temporally in the left eye, and fluorescein leakage in both eyes. Due to the suspicion of concurrent FEVR, genetic testing using a vitreoretinopathy panel was performed which revealed a mosaic Turner syndrome associated with 45,X/46,X,r(X), subsequently confirmed by chromosome analysis. The deleted region in the ring X chromosome included the NDP and RS1 genes. The patient was treated with laser photocoagulation of the peripheral avascular retina and sub-Tenon's triamcinolone injection in both eyes, intravitreal injection of bevacizumab in the left eye, and pars plicata vitrectomy in the right eye. CONCLUSIONS: In premature neonates with atypical ROP, a clinical suspicion of concurrent FEVR or similar vasculopathy is important and genetic testing may elucidate a genetic etiology, which could influence management and prognosis. Turner syndrome can be connected with co-occurring Mendelian gene disorders, particularly in individuals with mosaicism. The concurrence of FEVR and ROP appears to result in atypical and possibly more severe phenotypes.


Assuntos
Retinopatia da Prematuridade , Síndrome de Turner , Feminino , Recém-Nascido , Humanos , Vitreorretinopatias Exsudativas Familiares , Retinopatia da Prematuridade/complicações , Retinopatia da Prematuridade/diagnóstico , Retinopatia da Prematuridade/genética , Síndrome de Turner/complicações , Síndrome de Turner/diagnóstico , Síndrome de Turner/genética , Fenótipo , Cromossomo X/patologia
10.
Nat Chem Biol ; 18(12): 1388-1398, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-36097295

RESUMO

The Janus tyrosine kinase (JAK) family of non-receptor tyrosine kinases includes four isoforms (JAK1, JAK2, JAK3, and TYK2) and is responsible for signal transduction downstream of diverse cytokine receptors. JAK inhibitors have emerged as important therapies for immun(onc)ological disorders, but their use is limited by undesirable side effects presumed to arise from poor isoform selectivity, a common challenge for inhibitors targeting the ATP-binding pocket of kinases. Here we describe the chemical proteomic discovery of a druggable allosteric cysteine present in the non-catalytic pseudokinase domain of JAK1 (C817) and TYK2 (C838), but absent from JAK2 or JAK3. Electrophilic compounds selectively engaging this site block JAK1-dependent trans-phosphorylation and cytokine signaling, while appearing to act largely as 'silent' ligands for TYK2. Importantly, the allosteric JAK1 inhibitors do not impair JAK2-dependent cytokine signaling and are inactive in cells expressing a C817A JAK1 mutant. Our findings thus reveal an allosteric approach for inhibiting JAK1 with unprecedented isoform selectivity.


Assuntos
Cisteína , Proteômica , Transdução de Sinais , Citocinas , Isoformas de Proteínas
12.
Front Genome Ed ; 4: 923718, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35910415

RESUMO

Base editors (BEs) are genome editing agents that install point mutations with high efficiency and specificity. Due to their reliance on uracil and inosine DNA damage intermediates (rather than double-strand DNA breaks, or DSBs), it has been hypothesized that BEs rely on more ubiquitous DNA repair pathways than DSB-reliant genome editing methods, which require processes that are only active during certain phases of the cell cycle. We report here the first systematic study of the cell cycle-dependence of base editing using cell synchronization experiments. We find that nickase-derived BEs (which introduce DNA backbone nicks opposite the uracil or inosine base) function independently of the cell cycle, while non-nicking BEs are highly dependent on S-phase (DNA synthesis phase). We found that synchronization in G1 (growth phase) during the process of cytosine base editing causes significant increases in C•G to A•T "byproduct" introduction rates, which can be leveraged to discover new strategies for precise C•G to A•T base editing. We observe that endogenous expression levels of DNA damage repair pathways are sufficient to process base editing intermediates into desired editing outcomes, and the process of base editing does not significantly perturb transcription levels. Overall, our study provides mechanistic data demonstrating the robustness of nickase-derived BEs for performing genome editing across the cell cycle.

13.
Metabolites ; 12(7)2022 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-35888735

RESUMO

The muscle stem-cell niche comprises numerous cell types, which coordinate the regeneration process after injury. Thyroid hormones are one of the main factors that regulate genes linked to skeletal muscle. In this way, deiodinase types 2 and 3 are responsible for the fine-tuning regulation of the local T3 amount. Although their expression and activity have already been identified during muscle regeneration, it is of utmost importance to identify the cell type and temporal pattern of expression after injury to thoroughly comprehend their therapeutic potential. Here, we confirmed the expression of Dio2 and Dio3 in the whole tibialis anterior muscle. We identified, on a single-cell basis, that Dio2 is present in paired box 7 (PAX7)-positive cells starting from day 5 after injury. Dio2 is present in platelet derived growth factor subunit A (PDGFA)-expressing fibro-adipogenic progenitor cells between days 7 and 14 after injury. Dio3 is detected in myogenic differentiation (MYOD)-positive stem cells and in macrophages immediately post injury and thereafter. Interestingly, Dio2 and Dio3 RNA do not appear to be present in the same type of cell throughout the process. These results provide further insight into previously unseen aspects of the crosstalk and synchronized regulation of T3 in injured muscle mediated by deiodinases. The set of findings described here further define the role of deiodinases in muscle repair, shedding light on potential new forms of treatment for sarcopenia and other muscular diseases.

14.
Am J Med Genet A ; 188(10): 3084-3088, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35869926

RESUMO

Loss-of-function pathogenic variants in somatic and germline cells in SMAD4 may cause cancer and juvenile polyposis-Hereditary Hemorrhagic Telangiectasia (SMAD4-JP-HHT), respectively. In a similar manner, gain-of-function somatic and germline pathogenic variants in SMAD4 can cause various forms of cancer as well as Myhre syndrome. The different SMAD4 molecular mechanisms result in contrasting clinical phenotypes demonstrated by SMAD4-JP-HHT and Myhre syndrome. We report an additional patient with SMAD4-JP-HHT and aortopathy, and expand the phenotype to include severe valvulopathy, cutaneous, ophthalmologic, and musculoskeletal features consistent with an inherited disorder of connective tissue. We compared this 70-year-old man with SMAD4-JP-HHT to 18 additional literature cases, and also compared patients with SMAD4-JP-HHT to those with Myhre syndrome. In contrast to aorta dilation, hypermobility, and loose skin in SMAD4-JP-HHT, Myhre syndrome has aorta hypoplasia, stiff joints, and firm skin representing an intriguing phenotypic contrast, which can be attributed to different molecular mechanisms involving SMAD4. We remind clinicians about the possibility of significant cardiac valvulopathy and aortopathy, as well as connective tissue disease in SMAD4-JP-HHT. Additional patients and longer follow-up will help determine if more intensive surveillance improves care amongst these patients.


Assuntos
Telangiectasia Hemorrágica Hereditária , Tecido Conjuntivo , Criptorquidismo , Fácies , Mutação com Ganho de Função , Transtornos do Crescimento , Deformidades Congênitas da Mão , Humanos , Deficiência Intelectual , Polipose Intestinal/congênito , Mutação , Síndromes Neoplásicas Hereditárias , Fenótipo , Proteína Smad4/genética , Telangiectasia Hemorrágica Hereditária/complicações , Telangiectasia Hemorrágica Hereditária/diagnóstico , Telangiectasia Hemorrágica Hereditária/genética
16.
Am J Med Genet A ; 188(6): 1667-1675, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35146895

RESUMO

TRPM3 encodes a transient receptor potential cation channel of the melastatin family, expressed in the central nervous system and in peripheral sensory neurons of the dorsal root ganglia. The recurrent substitution in TRPM3: c.2509G>A, p.(Val837Met) has been associated with syndromic intellectual disability and seizures. In this report, we present the clinical and molecular features of seven previously unreported individuals, identified by exome sequencing, with the recurrent p.(Val837Met) variant and global developmental delay. Other shared clinical features included congenital hypotonia, dysmorphic facial features (broad forehead, deep-set eyes, and down turned mouth), exotropia, and musculoskeletal issues (hip dysplasia, hip dislocation, scoliosis). Seizures were observed in two of seven individuals (febrile seizure in one and generalized tonic-clonic seizures with atonic drops in another), and epileptiform activity was observed in an additional two individuals. This report extends the number of affected individuals to 16 who are heterozygous for the de novo recurrent substitution p.(Val837Met). In contrast with the initial report, epilepsy was not a mandatory feature observed in this series. TRPM3 pathogenic variation should be considered in individuals with global developmental delays, moderate-severe intellectual disability with, or without, childhood-onset epilepsy.


Assuntos
Epilepsia , Doenças do Recém-Nascido , Deficiência Intelectual , Canais de Cátion TRPM , Criança , Deficiências do Desenvolvimento/genética , Humanos , Recém-Nascido , Deficiência Intelectual/genética , Hipotonia Muscular/genética , Mutação de Sentido Incorreto , Canais de Cátion TRPM/genética , Sequenciamento do Exoma
17.
J Neurosci Nurs ; 54(1): 48-51, 2022 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-35007262

RESUMO

ABSTRACT: BACKGROUND: Multiple sclerosis (MS) is a disease involving demyelination of the central nervous system. Medication management in MS is a vital step in preventing further disease progression. OBJECTIVE: This article presents healthcare providers with an aide-mémoire in the form of a mnemonic to assist in the medication management of MS. METHODS: We explored recent guidelines, systematic reviews, and randomized controlled trials using PubMed, MEDLINE, and CINAHL to analyze the role and efficacy of pharmacotherapy in relapse prevention of MS. CONCLUSION: It is crucial to consider the classifications of MS and its pathophysiology to determine which medication produces the best results. Our proposed mnemonic can support a clinician's recall ability and assist in identifying the respective MS medication.


Assuntos
Esclerose Múltipla , Humanos , Memória
18.
BMJ Support Palliat Care ; 12(e2): e264-e270, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-31996363

RESUMO

OBJECTIVES: This is a prospective study evaluating NEPA in patients with breast cancer (the NEPA group), who received (neo)adjuvant AC chemotherapy (consisting of doxorubicin 60 mg/m2 and cyclophosphamide 600 mg/m2). The primary objectives were to assess the efficacy and safety of NEPA in controlling chemotherapy-induced nausea and vomiting (CINV). The secondary objectives were to compare CINV between the NEPA group and historical controls (the APR group) who received aprepitant in an earlier prospective randomised study. PATIENTS AND METHODS: 60 patients participated in the NEPA group; 62 were in the APR group. Eligibility criteria of both groups were similar, that is, Chinese patients with breast cancer who were treated with (neo)adjuvant AC. NEPA group received NEPA and dexamethasone; APR group received aprepitant, ondansetron and dexamethasone. Individuals filled in self-reported diary, visual analogue scale for nausea and Functional Living Index-Emesis questionnaire. RESULTS: Within the NEPA group, 70.0%, 85.7% and 60.0%, respectively reported complete response in the acute, delayed and overall phases in cycle 1 AC. When compared with the historical APR group during cycle 1 AC, NEPA group achieved significantly higher rates of complete response, complete protection, total control, 'no significant nausea' and 'no nausea' in the delayed phase; similar findings were noted in the overall phase with significantly better quality of life. Superior efficacy of NEPA was maintained over multiple cycles. Both antiemetic regimens were well tolerated. CONCLUSION: In this study on Chinese patients with breast cancer who were uniformly receiving AC, NEPA was effective in controlling CINV. TRIAL REGISTRATION NUMBER: NCT03386617.


Assuntos
Neoplasias da Mama , Aprepitanto/efeitos adversos , Neoplasias da Mama/tratamento farmacológico , Ciclofosfamida/efeitos adversos , Dexametasona , Doxorrubicina/efeitos adversos , Feminino , Humanos , Náusea/induzido quimicamente , Estudos Prospectivos , Piridinas/efeitos adversos , Qualidade de Vida , Vômito/induzido quimicamente , Vômito/tratamento farmacológico , Vômito/prevenção & controle
19.
Genome Biol Evol ; 13(12)2021 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-34877597

RESUMO

The cnidarian model organism Hydra has long been studied for its remarkable ability to regenerate its head, which is controlled by a head organizer located near the hypostome. The canonical Wnt pathway plays a central role in head organizer function during regeneration and during bud formation, which is the asexual mode of reproduction in Hydra. However, it is unclear how shared the developmental programs of head organizer genesis are in budding and regeneration. Time-series analysis of gene expression changes during head regeneration and budding revealed a set of 298 differentially expressed genes during the 48-h head regeneration and 72-h budding time courses. In order to understand the regulatory elements controlling Hydra head regeneration, we first identified 27,137 open-chromatin elements that are open in one or more sections of the organism body or regenerating tissue. We used histone modification ChIP-seq to identify 9,998 candidate proximal promoter and 3,018 candidate enhancer-like regions respectively. We show that a subset of these regulatory elements is dynamically remodeled during head regeneration and identify a set of transcription factor motifs that are enriched in the enhancer regions activated during head regeneration. Our results show that Hydra displays complex gene regulatory structures of developmentally dynamic enhancers, which suggests that the evolution of complex developmental enhancers predates the split of cnidarians and bilaterians.


Assuntos
Hydra , Animais , Padronização Corporal/genética , Cromatina/genética , Cromatina/metabolismo , Expressão Gênica , Hydra/genética , Via de Sinalização Wnt
20.
J Public Econ ; 1932021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33716349

RESUMO

We present estimates of intergenerational mobility in self-reported health status (SRHS) in the US using data from the PSID. We estimate that the rank-rank slope in SRHS is 0.26. We show that including both parent health and income in models of intergenerational mobility increases the explanatory power of child outcomes. We construct a monetary metric for health and then use this to combine income and health into a measure of welfare and estimate the rank-rank slope to be about 0.4 for this new measure. Finally, we document striking health mobility gaps by race, region and parent education.

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