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1.
Am J Epidemiol ; 2024 Jun 17.
Artículo en Inglés | MEDLINE | ID: mdl-38881045

RESUMEN

Despite increasing prevalence of hypertension in youth and high adult cardiovascular mortality rates, the long-term consequences of youth-onset hypertension remain unknown. This is due to limitations of prior research such as small sample sizes, reliance on manual record review, and limited analytic methods that did not address major biases. The Study of the Epidemiology of Pediatric Hypertension (SUPERHERO) is a multisite retrospective Registry of youth evaluated by subspecialists for hypertension disorders. Sites obtain harmonized electronic health record data using standardized biomedical informatics scripts validated with randomized manual record review. Inclusion criteria are index visit for International Classification of Diseases Diagnostic Codes, 10th Revision (ICD-10 code)-defined hypertension disorder ≥January 1, 2015 and age <19 years. We exclude patients with ICD-10 code-defined pregnancy, kidney failure on dialysis, or kidney transplantation. Data include demographics, anthropomorphics, U.S. Census Bureau tract, histories, blood pressure, ICD-10 codes, medications, laboratory and imaging results, and ambulatory blood pressure. SUPERHERO leverages expertise in epidemiology, statistics, clinical care, and biomedical informatics to create the largest and most diverse registry of youth with newly diagnosed hypertension disorders. SUPERHERO's goals are to (i) reduce CVD burden across the life course and (ii) establish gold-standard biomedical informatics methods for youth with hypertension disorders.

2.
Biol Reprod ; 2024 Jun 21.
Artículo en Inglés | MEDLINE | ID: mdl-38904948

RESUMEN

Conceptus estrogens and prostaglandins have long been considered the primary signals for maternal recognition of pregnancy (MRP) in the pig. However, loss-of-function studies targeting conceptus aromatase genes (CYP19A1 and CYP19A2) and prostaglandin-endoperoxide synthase 2 (PTGS2) indicated that conceptuses can not only signal MRP without estrogens or prostaglandins but can maintain early pregnancy. However, complete loss of estrogen production leads to abortion after day 25 of gestation. Although neither conceptus estrogens nor prostaglandins had a significant effect on early maintenance of CL function alone, the two conceptus factors have a biological relationship. To investigate the role that both conceptus estrogens and prostaglandins have on MRP and maintenance of pregnancy, a triple loss-of function model (TKO) was generated for conceptus CYP19A1, CYP19A2 and PTGS2. In addition, a conceptus CYP19A2-/- model (A2KO) was established to determine the role of placental estrogen during later pregnancy. Estrogen and prostaglandin synthesis were greatly reduced in TKO conceptuses which resulted in a failure to inhibit luteolysis after day 15 of pregnancy despite the presence of conceptuses in the uterine lumen. However, A2KO placentae not only maintained functional CL but were able to maintain pregnancy to day 32 of gestation. Despite the loss of placental CYP19A2 expression, the allantois fluid content of estrogen was not affected as the placenta compensated by expressing CYP19A1 and CYP19A3, which are normally absent in controls. Results suggest conceptuses can signal MRP through production of conceptus PGE or stimulating PGE synthesis from the endometrium through conceptus estrogen. Failure of conceptuses to produce both factors results in failure of MRP and loss of pregnancy.

3.
Int Orthop ; 48(7): 1859-1869, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38634937

RESUMEN

PURPOSE: Open surgical approaches for the treatment of anterior pelvic arc lesions are associated with several complications. We present the first retrospective descriptive case series on the use of laparoscopy as an alternative. METHODS: This descriptive, retrospective, single-centre study enrolled all patients who underwent laparoscopy for the treatment of pelvic ring disruption between May 2020 and March 2022. The primary outcome was the procedure failure rate based on conversion to open surgery. Secondary outcomes were the duration of the surgical procedure, x-ray exposure, length of hospitalisation, postoperative pain assessment, and functional scores at the last follow-up. RESULTS: The study included two females and 12 males. The mean age of the study participants was 44.2 (23-67) years. In total, nine (64.3%) patients had pubic symphysis disjunction, four (28.6%) had bilateral fractures of the obturator frames, and one (7%) had both. None of the patients required conversion to open surgery. The median operating times for symphysis pubis disruption, obturator frame fracture, and patients with both injuries were 90.0 (60-120), 135 (105-180), and 240 min, respectively. The median overall operating time was 102.5 (60-240) min. The median Iowa Pelvic Score and Majeed Functional Score at the last follow-up were 87 (70-99) and 84 (70-100), respectively. CONCLUSION: Laparoscopic internal fixation is a reliable treatment for pelvic ring disruption. The clinical and radiological outcomes of our patients suggest the usefulness of this technique as an alternative to open approaches.


Asunto(s)
Fracturas Óseas , Laparoscopía , Huesos Pélvicos , Humanos , Masculino , Femenino , Laparoscopía/métodos , Adulto , Estudios Retrospectivos , Persona de Mediana Edad , Huesos Pélvicos/cirugía , Huesos Pélvicos/lesiones , Huesos Pélvicos/diagnóstico por imagen , Fracturas Óseas/cirugía , Anciano , Adulto Joven , Fijación Interna de Fracturas/métodos , Tempo Operativo , Resultado del Tratamiento , Sínfisis Pubiana/cirugía , Sínfisis Pubiana/lesiones
4.
Reproduction ; 166(4): 263-269, 2023 10 01.
Artículo en Inglés | MEDLINE | ID: mdl-37490351

RESUMEN

In brief: Aromatase catalyzes the synthesis of estrogens and has been shown to have an important role during the establishment of pregnancy in the pig. This study confirmed the differential expression of the three aromatase isoforms. Abstract: Although three porcine aromatase isoforms have been identified, their gene expression profiles in reproduction are still poorly understood. Here, we identified by Sanger sequencing unique nucleotide signatures for the three paralogous copies of Cyp19 and analyzed by RT-PCR the occurrence of the Cyp19 and Cyp17a1 transcripts at different tissues and stages of conceptus and fetal-placental development. Cyp19a1 and Cyp19a3 expressions were detected in conceptuses and gonads, respectively. Cyp19a2 transcripts were identified on both the conceptuses and the placenta samples. Transcripts for Cyp17a1 were detected predominantly in conceptus and gonads. In the endometrium of day 21 pregnant females, as well as days 12 and 17 pseudopregnant females, we did not detect the expression of Cyp19a1, Cyp19a2, or Cyp19a3. In our study, we have demonstrated distinct transcriptional regulation for the three functional Cyp19 paralogs and a potential role for Cyp17a1 in controlling the secretion of estrogen from the conceptus and the placenta.


Asunto(s)
Aromatasa , Placenta , Embarazo , Animales , Femenino , Porcinos , Placenta/metabolismo , Aromatasa/genética , Aromatasa/metabolismo , Estrógenos/metabolismo , Embrión de Mamíferos/metabolismo , Gónadas/metabolismo
5.
Mol Reprod Dev ; 90(7): 459-468, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-35736243

RESUMEN

CRISPR-Cas9 gene editing technology provides a method to generate loss-of-function studies to investigate, in vivo, the specific role of specific genes in regulation of reproduction. With proper design and selection of guide RNAs (gRNA) designed to specifically target genes, CRISPR-Cas9 gene editing allows investigation of factors proposed to regulate biological pathways involved with establishment and maintenance of pregnancy. The advantages and disadvantages of using the current gene editing technology in a large farm species is discussed. CRISPR-Cas9 gene editing of porcine conceptuses has generated new perspectives for the regulation of endometrial function during the establishment of pregnancy. The delicate orchestration of conceptus factors facilitates an endometrial proinflammatory response while regulating maternal immune cell migration and expansion at the implantation site is essential for establishment and maintenance of pregnancy. Recent developments and use of endometrial epithelial "organoids" to study endometrial function in vitro provides a future method to screen and target specific endometrial genes as an alternative to generating a gene edited animal model. With continuing improvements in gene editing technology, future researchers will be able to design studies to enhance our knowledge of mechanisms essential for early development and survival of the conceptus.


Asunto(s)
Sistemas CRISPR-Cas , Edición Génica , Embarazo , Femenino , Animales , Porcinos/genética , Edición Génica/métodos , Sistemas CRISPR-Cas/genética , Reproducción/genética , Endometrio/metabolismo
6.
Pediatr Res ; 94(1): 290-295, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-36599944

RESUMEN

BACKGROUND: Household food insecurity (HFI) is associated with poor general and mental health. Prior studies assessed parent and child mental health separately and did not assess other social risks. OBJECTIVE: To assess the relationship between HFI and both parental and child mental health. METHODS: Parents of 3-5-year-old children completed validated measures of food insecurity and mental health. Separate linear regression models were used for unadjusted analysis for each mental health outcome (parent depression, anxiety, and stress, and child mental health). Multivariable analysis was performed using hierarchical regression to adjust for relevant covariates. RESULTS: Children (n = 335) were racially and socioeconomically diverse. HFI was reported in 10% of participants. HFI was associated with worse parent depression and stress in unadjusted analyses; however, after adjusting for covariates, the associations became insignificant. HFI was significantly associated with worse child mental health in unadjusted and multivariable analysis (aß 2.24, 95% CI 0.59-3.88) compared to those without HFI. CONCLUSION: HFI was not associated with parental mental health outcomes when other social risks were included in the analyses; however, HFI was significantly associated with worse childhood mental health in all analyses. Pediatric providers should screen for and develop interventions to target both HFI and mental health. IMPACT: Household food insecurity was associated with worse parent depression and stress in unadjusted analyses; however, after adjusting for other social risks, the associations became insignificant. Household food insecurity was significantly associated with worse child mental health, even after adjusting for demographics, other social risks, and parent mental health. Social risks are differentially associated with parent and child mental health. Understanding the complexities of family stressors can help better support parents and children struggling with mental health problems and social risks.


Asunto(s)
Abastecimiento de Alimentos , Salud Mental , Humanos , Niño , Preescolar , Ansiedad , Estudios Transversales , Inseguridad Alimentaria
7.
Biol Reprod ; 105(6): 1577-1590, 2021 12 20.
Artículo en Inglés | MEDLINE | ID: mdl-34608481

RESUMEN

Establishment and maintenance of pregnancy in the pig is a complex process that relies on conceptus regulation of the maternal proinflammatory response to endometrial attachment. Following elongation, pig conceptuses secrete interferon gamma (IFNG) during attachment to the endometrial luminal epithelium. The objective here was to determine if conceptus production of IFNG is important for early development and establishment of pregnancy. CRISPR/Cas9 gene editing and somatic cell nuclear transfer technologies were used to create an IFNG loss-of-function study in pigs. Wild-type (IFNG+/+) and null (IFNG-/-) fibroblast cells were used to create embryos through somatic cell nuclear transfer. IFNG expression was not detected in IFNG-/- conceptuses on either day 15 or day 17 of pregnancy. Ablation of conceptus IFNG production resulted in the reduction of stromal CD3+ and mast cells, which localized to the site of conceptus attachment on day 15. The uteri of recipients with IFNG-/- conceptuses were inflamed, hyperemic and there was an abundance of erythrocytes in the uterine lumen associated with the degenerating conceptuses. The endometrial stromal extracellular matrix was altered in the IFNG-/- embryo pregnancies and there was an increased endometrial mRNA levels for collagen XVII (COL17A1), matrilin 1 (MATN1), secreted phosphoprotein 1 (SPP1), and cysteine-rich secretory protein 3 (CRISP3), which are involved with repair and remodeling of the extracellular matrix. These results indicate conceptus IFNG production is essential in modulating the endometrial proinflammatory response for conceptus attachment and survival in pigs.


Asunto(s)
Embrión de Mamíferos/metabolismo , Interferón gamma/metabolismo , Preñez/metabolismo , Sus scrofa/embriología , Animales , Desarrollo Embrionario , Femenino , Embarazo
8.
Biol Reprod ; 105(5): 1104-1113, 2021 11 15.
Artículo en Inglés | MEDLINE | ID: mdl-34453429

RESUMEN

Elongation of pig conceptuses is a dynamic process, requiring adequate nutrient provisions. Glutamine is used as an energy substrate and is involved in the activation of mechanistic target of rapamycin complex 1 (mTORC1) during porcine preimplantation development. However, the roles of glutamine have not been extensively studied past the blastocyst stage. Therefore, the objective of the current study was to determine if glutaminase (GLS), which is the rate-limiting enzyme in glutamine metabolism, was necessary for conceptus elongation to proceed and was involved in mTORC1 activation. The CRISPR/Cas9 system was used to induce loss-of-function mutations in the GLS gene of porcine fetal fibroblasts. Wild type (GLS+/+) and knockout (GLS-/-) fibroblasts were used as donor cells for somatic cell nuclear transfer, and GLS+/+ and GLS-/- blastocyst-stage embryos were transferred into surrogates. On day 14 of gestation, GLS+/+ conceptuses primarily demonstrated filamentous morphologies, and GLS-/- conceptuses exhibited spherical, ovoid, tubular, and filamentous morphologies. Thus, GLS-/- embryos were able to elongate despite the absence of GLS protein and minimal enzyme activity. Furthermore, spherical GLS-/- conceptuses had increased abundance of transcripts related to glutamine and glutamate metabolism and transport compared to filamentous conceptuses of either genotype. Differences in phosphorylation of mTORC1 components and targets were not detected regarding conceptus genotype or morphology, but abundance of two transcriptional targets of mTORC1, cyclin D1, and peroxisome proliferator-activated receptor gamma coactivator 1-alpha was increased in spherical conceptuses. Therefore, porcine GLS is not essential for conceptus elongation and is not required for mTORC1 activation at this developmental timepoint.


Asunto(s)
Blastocisto/metabolismo , Embrión de Mamíferos/embriología , Desarrollo Embrionario/genética , Glutaminasa/genética , Diana Mecanicista del Complejo 1 de la Rapamicina/genética , Sus scrofa/embriología , Animales , Transferencia de Embrión , Embrión de Mamíferos/enzimología , Femenino , Glutaminasa/metabolismo , Diana Mecanicista del Complejo 1 de la Rapamicina/metabolismo
9.
Mol Reprod Dev ; 88(7): 490-499, 2021 07.
Artículo en Inglés | MEDLINE | ID: mdl-34075648

RESUMEN

Glutamine supplementation to porcine embryo culture medium improves development, increases leucine consumption, and enhances mitochondrial activity. In cancer cells, glutamine has been implicated in the activation of mechanistic target of rapamycin complex 1 (mTORC1) to support rapid proliferation. The objective of this study was to determine if glutamine metabolism, known as glutaminolysis, was involved in mTORC1 activation in porcine embryos. Culture with 3.75 mM GlutaMAX improved development to the blastocyst stage compared to culture with 1 mM GlutaMAX, and culture with 0 mM GlutaMAX decreased development compared to all groups with GlutaMAX. Ratios of phosphorylated to total MTOR were increased when embryos were cultured with 3.75 or 10 mM GlutaMAX, which was enhanced by the absence of leucine, but ratios for RPS6K were unchanged. As another indicator of mTORC1 activation, colocalization of MTOR and a lysosomal marker was increased in embryos cultured with 3.75 or 10 mM GlutaMAX in the absence of leucine. Culturing embryos with glutaminase inhibitors decreased development and the ratio of phosphorylated to total MTOR, indicating reduced activation of the complex. Therefore, glutaminolysis is involved in the activation of mTORC1 in porcine embryos, but further studies are needed to characterize downstream effects on development.


Asunto(s)
Blastocisto/metabolismo , Glutamina/metabolismo , Diana Mecanicista del Complejo 1 de la Rapamicina/metabolismo , Animales , Blastocisto/citología , Blastocisto/efectos de los fármacos , Células Cultivadas , Medios de Cultivo/farmacología , Técnicas de Cultivo de Embriones/veterinaria , Desarrollo Embrionario/efectos de los fármacos , Desarrollo Embrionario/fisiología , Femenino , Fertilización In Vitro/métodos , Fertilización In Vitro/veterinaria , Glutamina/farmacología , Masculino , Transducción de Señal/efectos de los fármacos , Porcinos
10.
Mol Reprod Dev ; 86(11): 1531-1547, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-31478591

RESUMEN

An appropriate environment to optimize porcine preimplantation embryo production in vitro is required as genetically modified pigs have become indispensable for biomedical research and agriculture. To provide suitable culture conditions, omics technologies have been applied to elucidate which metabolic substrates and pathways are involved during early developmental processes. Metabolomic profiling and transcriptional analysis comparing in vivo- and in vitro-derived embryos have demonstrated the important role of amino acids during preimplantation development. Transcriptional profiling studies have been helpful in assessing epigenetic reprogramming agents to allow for the correction of gene expression during the cloning process. Along with this, nanotechnology, which is a highly promising field, has allowed for the use of engineered nanoplatforms in reproductive biology. A growing number of studies have explored the use of nanoengineered materials for sorting, labeling, and targeting purposes; which demonstrates their potential to become one of the solutions for precise delivery of molecules into gametes and embryos. Considering the contributions of omics and the recent progress in nanoscience, in this review, we focused on their emerging applications for current in vitro pig embryo production systems to optimize the generation of genetically modified animals.


Asunto(s)
Clonación de Organismos , Embrión de Mamíferos , Epigenómica , Perfilación de la Expresión Génica , Metabolómica , Nanotecnología , Porcinos , Animales , Embrión de Mamíferos/citología , Embrión de Mamíferos/embriología , Epigénesis Genética , Regulación del Desarrollo de la Expresión Génica , Porcinos/embriología , Porcinos/genética
11.
Palliat Med ; 32(2): 571-580, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-28604265

RESUMEN

BACKGROUND: Education has been highlighted as fundamental in equipping healthcare professionals with essential knowledge and skills to provide good end-of-life care. Multiprofessional educational programmes have a positive influence on knowledge, attitude and confidence but few have sought to understand the longer term impact on care delivery. The European Certificate in Essential Palliative Care is an 8-week home-study-based programme for healthcare professionals and is currently run in nine centres. Successful candidates have undertaken the course from their own countries around the world. This article describes the evaluation of the European Certificate in Essential Palliative Care which has been evolving over 15 years. AIMS: To evaluate the impact an educational intervention has on participants' confidence in palliative care, to determine whether this is sustained over time and explore participants' perception of the influence of the course on confidence. DESIGN: A mixed-method longitudinal approach. SETTING/PARTICIPANTS: A survey using a self-efficacy scale was emailed to 342 candidates who received an educational intervention and semi-structured interviews to a sub-sample of 15 candidates at baseline, 3 and 6 months. RESULTS: At 3 months, candidates had almost 20 times higher odds of being above any given level of confidence than at baseline which was sustained at 6 months. Qualitative analysis identified examples of increased competence and confidence improving palliative care delivery. CONCLUSION: Findings suggest that the European Certificate in Essential Palliative Care improves confidence in palliative care and that this is sustained over time with evidence of confidence in symptom control, communication and a holistic approach in clinical practice.


Asunto(s)
Personal de Salud/educación , Cuidados Paliativos , Autoeficacia , Cuidado Terminal , Adulto , Femenino , Humanos , Entrevistas como Asunto , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Investigación Cualitativa , Encuestas y Cuestionarios
12.
J Ultrasound Med ; 37(10): 2451-2455, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-29575042

RESUMEN

Athletes' hearts have been studied for adaptive changes in response to exercise. Physiologic changes are normal responses to intense athletic training regimens, whereas pathologic changes predispose athletes to sudden cardiac death. The two alterations overlap in clinical presentation. Research continues to investigate the upper limits of cardiac remodeling to aid clinical decision making. Studying normal changes that occur in response to exercise will advance physicians' understanding of physiologic responses to exercise and potentially improve clinical distinction. To expand this body of knowledge, we present an observational case series that describes morphologic changes in athlete's hearts concurrent with performance measurements.


Asunto(s)
Atletas , Remodelación Atrial/fisiología , Ecocardiografía/métodos , Remodelación Ventricular/fisiología , Deportes Acuáticos , Adulto , Ergometría/estadística & datos numéricos , Corazón/fisiología , Humanos , Masculino
13.
Zygote ; 26(2): 111-118, 2018 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-29655380

RESUMEN

SummaryThere are few reports of cryopreservation and injuries in Macrobrachium amazonicum embryos. Thus, the aim of this study was to analyze the effects of cryoprotectants agents and cooling on stage VIII of this species. Fertilized eggs from ovigerous females were removed from the incubation chamber, then placed in 10 ml Falcon tubes with a cryoprotectant solution and saline-free calcium solution. Thus, the embryos underwent a cooling curve of 1°C per min until reaching 5°C, and then were stored for 2 h. The tubes containing the embryos were washed to remove the cryoprotectant, acclimated for 5 min and then transferred to 50 ml incubators. At the end of the 24-h period, living embryos from each tube were counted and tabulated. A pool of embryos was fixed with 4% formaldehyde and then subjected to histology using 3-mm thick sections and stained with haematoxylin/eosin. Another pool was used for biometric analysis in which length, width and volume were analyzed. The cryoprotectants agents used were: dimethylsulfoxide (DMSO), methyl alcohol, ethylene glycol at 1, 5 and 10% and sucrose (0.5 M). Variance analysis was performed followed by Tukey's honest significant difference (HSD) test at 5% significance level. DMSO cryoprotectant affected embryo survival the least with rates of 71.8, 36.2 and 0% for concentrations of 1, 5 and 10%, respectively. Ethylene glycol caused 100% mortality at all the concentrations used. It was not possible to observe the interference of cooling and cryoprotectants on embryonic structures in this study.


Asunto(s)
Criopreservación/métodos , Crioprotectores/farmacología , Palaemonidae/embriología , Animales , Dimetilsulfóxido/farmacología , Embrión no Mamífero/citología , Embrión no Mamífero/efectos de los fármacos , Embrión no Mamífero/fisiología , Glicol de Etileno/farmacología , Femenino , Metanol/farmacología , Palaemonidae/efectos de los fármacos , Sacarosa/farmacología
14.
Curr Sports Med Rep ; 16(2): 77-83, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28282353

RESUMEN

Sudden cardiac death (SCD) is the leading cause of death during exercise in young athletes. Preparticipation physical examinations were developed to maintain the health and safety of athletes, including the prompt identification of those at risk for SCD. The use of medical history and physical examinations, electrocardiography, and echocardiography, or some combination thereof, is the source of continued debate. This article provides an overview of the etiology of SCD and reviews literature relating to preparticipation echocardiography, with a focus on its evolution, utility, and effectiveness. The limited echocardiogram is a potentially viable screening option yet to be thoroughly explored by experts and policymakers in the sports medicine community.


Asunto(s)
Atletas , Enfermedades Cardiovasculares/diagnóstico , Muerte Súbita Cardíaca/prevención & control , Tamizaje Masivo/métodos , Enfermedades Cardiovasculares/complicaciones , Muerte Súbita Cardíaca/etiología , Electrocardiografía , Ejercicio Físico , Humanos , Resistencia Física , Pronóstico , Medición de Riesgo , Factores de Riesgo , Medicina Deportiva
15.
Anim Reprod Sci ; 264: 107452, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38522133

RESUMEN

Maternal recognition of pregnancy (MRP) is a term utilized in mammals to describe pathways in which the conceptus alters the endometrial environment to prevent regression of corpora lutea to ensure continued production of progesterone (P4) required for establishment and maintenance of pregnancy. For nearly 40 years after publication of the endocrine/exocrine theory, conceptus estrogen (E2) was considered the primary maternal recognition signal in the pig. Conceptus production of prostaglandin E2 (PGE2) was also considered to be a major factor in preventing luteolysis. An addition to E2 and PGE2, pig conceptuses produce interleukin 1B2 (IL1B2) and interferons (IFN) delta (IFND) and gamma (IFNG). The present review provides brief history of the discovery of E2, PGs and IFNS which led to research investigating the role of these conceptus secreted factors in establishing and maintaining pregnancy in the pig. The recent utilization of gene editing technology allowed a more direct approach to investigate the in vivo roles of IL1B2, E2, PGE2, AND IFNG for establishment of pregnancy. These studies revealed unknown functions for IFNG and ILB2 in addition to PGE2 and E2. Thus, pregnancy recognition signal is via a servomechanism in requiring sequential effects of P4, E2, IL1B2, PGE2 and IFNG. Results indicate that the original established dogma for the role of conceptus E2 and PGs in MRP is a far too simplified model that involves the interplay of numerous mechanisms for inhibiting luteolysis, inducing critical elongation of the conceptuses and resolution of inflammation in pigs.


Asunto(s)
Citocinas , Prostaglandinas , Animales , Femenino , Embarazo , Porcinos/fisiología , Prostaglandinas/metabolismo , Citocinas/metabolismo , Citocinas/genética , Hormonas Esteroides Gonadales/metabolismo , Preñez/fisiología
16.
PLoS One ; 19(4): e0302331, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38662729

RESUMEN

Controlling feeding practices, such as pressure to eat, are associated with a child's disinhibited eating and extremes in bodyweight. We aimed to explore which factors are associated with parent dyads' pressuring feeding practices, including how mothers and fathers perceive the sharing of household tasks such as mealtime and child feeding responsibilities. In this cross-sectional study, parent dyads (mother and father) of healthy preschool-aged children completed an identical questionnaire consisting of measures of picky eating (food fussiness subscale of Child Eating Behavior Questionnaire), parental concern for undereating, and pressure to eat (Child Feeding Questionnaire). We used separate multivariable linear regression models for mothers and fathers to assess correlates associated with pressure to eat subscale score, including slowness of eating and enjoyment of food, child BMI z-score and race/ethnicity, and household income. Separate unadjusted linear regression models for mothers and fathers were used to report the association of pressure to eat with household responsibilities. Parents (N = 88) had similar mean picky eating, concern for undereating, and pressure to eat scores; more fathers had high pressure to eat scores (36% vs 27%). Higher pressure to eat was significantly associated with lower income, non-Hispanic Black or Black race/ethnicity, slow eating, and lower enjoyment of food. Pressure was not associated with household responsibilities. While there were similar maternal and paternal perceptions of child eating behaviors, more fathers reported pressuring their child to eat. Identifying differences in parental feeding practices may assist in intervention development to improve feeding practices.


Asunto(s)
Padre , Conducta Alimentaria , Madres , Humanos , Femenino , Masculino , Padre/psicología , Madres/psicología , Conducta Alimentaria/psicología , Estudios Transversales , Preescolar , Adulto , Encuestas y Cuestionarios , Percepción , Composición Familiar
17.
Clin Med (Lond) ; 13(3): 248-51, 2013 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-23760697

RESUMEN

This paper describes three elderly patients who were admitted to hospital with aspiration pneumonia. They were kept nil by mouth (NBM) for a number of days, while being given intravenous hydration initially and enteral feeding subsequently. During that time they deteriorated and appeared to be dying, so the Liverpool Care Pathway (LCP) for the dying was used to support their care. Artificial nutrition and hydration were stopped. They quickly improved and the LCP was discontinued. Two of the patients deteriorated again on reintroduction of enteral feeding and/or intravenous fluids, only to improve a second time following withdrawal of feeding and fluids. Vulnerable elderly patients should not be made NBM except as a last resort. Clinicians should be alert to the possibility of refeeding syndrome and overhydration as reversible causes of clinical deterioration, particularly in frail elderly patients. Use of the LCP in these patients provided a unique opportunity to witness the positive effects of withdrawal of excessive artificial nutrition and hydration.


Asunto(s)
Vías Clínicas , Nutrición Enteral/efectos adversos , Anciano Frágil , Nutrición Parenteral/efectos adversos , Síndrome de Realimentación/etiología , Síndrome de Realimentación/terapia , Anciano de 80 o más Años , Nutrición Enteral/métodos , Femenino , Humanos , Masculino , Nutrición Parenteral/métodos , Neumonía por Aspiración/etiología , Neumonía por Aspiración/terapia , Resultado del Tratamiento , Reino Unido
18.
Mar Environ Res ; 192: 106215, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-37890231

RESUMEN

Coral reefs in turbid waters have been hypothesized to be a refuge from climate change. These naturally occurring communities were brought into the spotlight because some of their species exhibited record levels of resistance to marine heatwaves (MHWs) by disturbance-tolerant corals. However, long-term monitoring data on the drivers of coral bleaching in these extreme reef habitats are scarce. Here, we describe the population structure and bleaching rates of a widespread and resilient coral (Siderastrea stellata). We examine the links between environmental factors, namely, rainfall, wind speed, turbidity, solar irradiance, sea surface temperature, MHWs, and coral bleaching status under the worst recorded drought cycle in the Tropical South Atlantic (2013-2015). We examined 2880 colonies, most of which (∼93%) fit in the size group of 2-10 cm, with a small number (∼1%) of larger and older colonies (>20 cm). The results indicated the absence of MHWs and normal sea surface temperature variations (between 26.6 °C and 29.3 °C), however, we detected an extreme rainfall deficit (30-40% less annual volume precipitation). In general, a high proportion (44-84%) of bleached colonies was found throughout the months when turbidity decreased. Siderastrea is the only reef-building coral that comprises this seascape with encrusting and low-relief colonies. During drought periods, cloudiness is reduced, turbidity and wind speed are reduced, and solar irradiance increase, driving coral bleaching in turbid reefs. However, episodic rainfall and higher wind speeds increase turbidity and decrease coral bleaching. Our hypothesis is that turbidity decreases during drought periods which increases bleaching risk to corals even without thermal stress. Our results suggest that turbidity may have related to wind and rainfall to provoke the coral bleaching phenomenon.


Asunto(s)
Antozoos , Blanqueamiento de los Corales , Animales , Viento , Arrecifes de Coral , Ecosistema
19.
Curr Microbiol ; 65(4): 461-4, 2012 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-22782467

RESUMEN

Leptospirosis is a globally prevalent zoonosis caused by pathogenic Leptospira spp.; several serologic variants have reservoirs in synanthropic rodents. The capybara is the largest living rodent in the world, and it has a wide geographical distribution in Central and South America. This rodent is a significant source of Leptospira since the agent is shed via urine into the environment and is a potential public health threat. In this study, we isolated and identified by molecular techniques a pathogenic Leptospira from capybara in southern Brazil. The isolated strain was characterized by partial rpoB gene sequencing and variable-number tandem-repeats analysis as L. interrogans, serogroup Icterohaemorrhagiae. In addition, to confirm the expression of virulence factors, the bacterial immunoglobulin-like proteins A and B expression was detected by indirect immunofluorescence using leptospiral specific monoclonal antibodies. This report identifies capybaras as an important source of infection and provides insight into the epidemiology of leptospirosis.


Asunto(s)
Leptospira/clasificación , Leptospira/patogenicidad , Tipificación Molecular , Roedores/microbiología , Factores de Virulencia/biosíntesis , Animales , Brasil , ADN Bacteriano/química , ADN Bacteriano/genética , ARN Polimerasas Dirigidas por ADN/genética , Técnica del Anticuerpo Fluorescente , Leptospira/genética , Leptospira/aislamiento & purificación , Repeticiones de Minisatélite , Análisis de Secuencia de ADN
20.
Int J Palliat Nurs ; 18(2): 69-75, 2012 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-22399044

RESUMEN

This pilot study aimed to assess the benefits of hypnotherapy in the management of anxiety and other symptoms, including depression and sleep disturbance, in palliative care patients with cancer. Eleven hospice patients received four sessions of hypnotherapy and completed the Hospital Anxiety and Depression Scale, the Edmonton Symptom Assessment System, and the Verran and Snyder-Halpern Scale at set time points. Wrist actigraphy also provided an objective assessment of sleep quality. After the second hypnotherapy session there was a statistically significant reduction in mean anxiety and symptom severity, but not in depression or sleep disturbance. After the fourth session there was a statistically significant reduction in all four patient-reported measures but not in actigraphy. These results offer evidence that hypnotherapy can reduce anxiety in palliative care patients, as well as improving sleep and the severity of psychological and physical symptoms. Further studies are needed to explore whether the observed benefits were a direct result of the hypnotherapy and how the intervention could most benefit this patient population.


Asunto(s)
Ansiedad/terapia , Hipnosis , Neoplasias/psicología , Cuidados Paliativos , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neoplasias/terapia , Encuestas y Cuestionarios
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