Publications by authors named "Francisca Leal"

COVID-19 has disproportionately affected the Latinx community, leading to heightened economic instability and increased mortality/morbidity. Frontline community health workers () have played an integral role in serving low-income Latinx immigrant communities, disseminating health information to this vulnerable community while also facing heightened risks to their own health and wellbeing. This study explores the impact of the pandemic on Latinx communities and the promotoras that serve them, examining how the stresses and inequities the pandemic wrought might be mitigated.

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Child abuse has intergenerational consequences for psychopathology, however, there remains a paucity of research regarding how these experiences affect Latinx families, particularly those at risk for additional negative life events, such as racial discrimination. This study aims to contribute to this gap in the literature by examining the impact maternal child abuse exposure has on youth and maternal psychopathology, as well as whether these associations are moderated by racial discrimination, in a sample of 224 Latinx mother-youth dyads. Hierarchical regressions revealed small but significant maternal child abuse exposure x racial discrimination interactions for youth depression and anxiety, but not maternal depression or anxiety, which were solely positively associated with maternal child abuse exposure.

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Objective: Exponential increases in deportation and negative public discourse have resulted in heightened fears of profiling and deportation among Latinx immigrant families in the United States. Deportation fears could compound the inequalities Latinx families face, worsening mental and behavioral health. To better understand the mental health consequences of the climate of deportation concerns among low-income Latinx mothers in the United States, we conducted a linguistic analysis of interviews of Latinx mothers' parenting experiences, examining their use of words related to deportation fears (e.

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Evidence for the effectiveness of attachment-based interventions in improving youth's socioemotional health increases each year, yet potential for scalability of existing programs is limited. Available programs may have lower acceptability within low-income immigrant communities. Co-designing and implementing interventions with trained community workers (Promotors) offers an appealing solution to multiple challenges, but community workers must have high investment in the program for this to be a workable solution.

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Precise cis-regulatory control of gene expression is essential for normal embryogenesis and tissue development. The BMP antagonist Gremlin1 (Grem1) is a key node in the signalling system that coordinately controls limb bud development. Here, we use mouse reverse genetics to identify the enhancers in the Grem1 genomic landscape and the underlying cis-regulatory logics that orchestrate the spatio-temporal Grem1 expression dynamics during limb bud development.

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Barriers facing effective science-to-practice translation have led scholars to conduct early-stage intervention research within community organizations. We describe our experiences developing a manualized parent-youth attachment-based group therapy intervention within a community health organization dedicated to serving low-income Latinx immigrant families, Latino Health Access (LHA), in which services are rendered by trained community workers (promotores). By conducting a qualitative analysis of interviews with all members of this academic-community partnership (research [Principal Investigator, student researchers] and community agency team members [Administrators, promotores]), we discuss the challenges and opportunities that this collaboration has generated.

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Latinx families are increasing in the population in the United States and have documented mental health concerns. Much remains to be understood about mental health predictors within this population. The present study aimed to help fill this gap and offer an in-depth assessment of psychopathology within a large (N = 330) sample of Latinx mothers and youth by exploring associations between sociodemographic risk, attachment relationship quality, and mental health.

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An exceptional case of parallel evolution between lizards and eutherian mammals occurs in the evolution of viviparity. In the lizard genus , viviparity provided the environment for the evolution of yolk-reduced eggs and obligate placentotrophy. One major event that favored the evolution of placentation was the reduction of the eggshell.

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Ed Zigler was a champion for underprivileged youth, one who worked alongside communities to fight for long-lasting systemic changes that were informed by his lifespan and ecological perspective on the development of the whole child. This paper reports on the development, implementation, and preliminary outcomes of an intervention that embodied the Zigler approach by adopting a community participatory research lens to integrate complementary insights across community-based providers (promotoras), Latinx immigrant families, and developmental psychologists in the service of promoting parent-child relationship quality and preventing youth aggression and violence. Analyses from the first 112 Latinx mother-youth dyad participants (46% female children, ages 8-17) in the resultant, Confía en mí, Confío en ti, eight-week intervention revealed significant pre-post increases in purported mechanisms of change (i.

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Article Synopsis
  • - Syncytins are genes derived from retroviruses that have evolved to play a crucial role in the formation of the placenta in mammals and some other vertebrates, including certain lizards.
  • - A new syncytin gene was identified through RNA sequencing, showing characteristics typical of syncytins, such as encoding a membrane protein that aids in cell fusion, and was found to be conserved across species over a long evolutionary period.
  • - The research indicates that the use of syncytins for placentation is not exclusive to mammals, highlighting a shared evolutionary mechanism for placental development in both mammals and certain nonmammalian species.
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The evolution of snakes involved dramatic modifications to the ancestral lizard body plan. Limb loss and elongation of the trunk are hallmarks of snakes, although convergent evolution of limb-reduced and trunk-elongated forms occurred multiple times in snake-like lizards. Advanced snakes are completely limbless, but intermediate and basal snakes have retained rudiments of hindlimbs and pelvic girdles.

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Limb reduction and loss are hallmarks of snake evolution. Although advanced snakes are completely limbless, basal and intermediate snakes retain pelvic girdles and small rudiments of the femur. Moreover, legs may have re-emerged in extinct snake lineages [1-5], suggesting that the mechanisms of limb development were not completely lost in snakes.

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Vertebrates exhibit a remarkably broad variation in trunk and tail lengths. However, the evolutionary and developmental origins of this diversity remain largely unknown. Posterior Hox genes were proposed to be major players in trunk length diversification in vertebrates, but functional studies have so far failed to support this view.

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Article Synopsis
  • External genitalia are present in all major groups of amniotes and serve the function of delivering sperm for internal fertilization; the phallus is a key intromittent organ.
  • Recent studies on mouse embryonic development are revealing the genetic mechanisms behind the formation of external genital structures, contributing to our knowledge of common human birth defects.
  • Comparative research on non-mammalian species has started to uncover the diverse evolutionary adaptations of genital structures, offering insights into developmental biology and potential implications for understanding human conditions like hypospadias.
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Within amniotes, external copulatory organs have undergone extensive morphological diversification. One of the most extreme examples is squamate (lizards and snakes) hemipenes, which are paired copulatory organs that extend from the lateral margins of the cloaca. Here, we describe the development of hemipenes in a basal snake, the ball python (Python regius).

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Mediator is a conserved multi-protein complex that plays an important role in regulating transcription by mediating interactions between transcriptional activator proteins and RNA polymerase II. Much evidence exists that Mediator plays a constitutive role in the transcription of all genes transcribed by RNA polymerase II. However, evidence is mounting that specific Mediator subunits may control the developmental regulation of specific subsets of RNA polymerase II-dependent genes.

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Having a better understanding of the intersection between chronic pain and obesity in the Mexican American community can be valuable for pain management specialists in determining treatment, service, and prevention strategies. The objectives of this study were (1) to describe the type and severity of chronic pain among overweight/obese Hispanic adults aged 40 years and older, and (2) to determine the association between chronic pain indices and key demographic variables, including excessive weight. Hispanic adults (N=101) were interviewed using validated questionnaires and measured for BMI and waist circumference.

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Despite the attention squamate lizards have received in the study of digit and limb loss, little is known about limb morphogenesis in pentadactyl lizards. Recent developmental studies have provided a basis for understanding lizard autopodial element homology based on developmental and comparative anatomy. In addition, the composition and identity of some carpal and tarsal elements of lizard limbs, and reptiles in general, have been the theme of discussions about their homology compared to non-squamate Lepidosauromorpha and basal Amniota.

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The type IV allantoplacenta has been described for the New World tropical scincids lizards of the genus Mabuya; it possesses the greatest morphological complexity known among viviparous squamates. Although a common morphological pattern has been observed in the few species of this lineage in which the allantoplacental morphology has been studied, some morphological variations may be present among species and populations. Here, we report morphological variation of the allantoplacenta of twelve populations of the genus Mabuya distributed in different geographical areas in northern South America using light microscopy.

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