Embryonic Structures Commons^™

Regulation Of Müllerian Duct Mesenchyme Transcription During Mammalian Sex Differentiation, Haowen Li, Richard R Behringer, Rachel D Mullen

Dissertations and Theses (Open Access)

Sp7/Osterix (Osx) encodes a zinc-finger transcription factor of the Specificity-protein family discovered by Nakashima et al. at the MD Anderson Cancer Center. While primarily recognized for its role in osteogenesis, Osx has also been implicated in mammalian reproductive development, particularly in male sex differentiation, where Müllerian Duct (MD) regression occurs, mediated by anti-Müllerian hormone (AMH) signaling. AMH-induced regression signals are transduced by the mesenchymal tissue surrounding the ductal structure, known as the Müllerian Duct mesenchyme (MDM). It was discovered that AMH signaling is necessary and sufficient for driving Osx expression in MDM. A previous transgenic mouse reporter …

The Effects Of Body Mass Index On Fertility And In Vitro Fertilization, Morgan R. Kidd

Honors College Theses

In-vitro fertilization (IVF) is the most widely used type of assisted reproductive technology for treating infertility arising from a number of conditions. As obesity rates continue to climb in the United States, infertility has been discovered to have a direct correlation. Individuals that fall below or above the healthy body mass index range are found to have disrupted regulation of the hypothalamic-pituitary-gonadal axis, resulting in diminished reproductive health. Those that are diagnosed as infertile due to conditions caused by the effects of low body mass index or high body mass index may seek assisted reproductive technologies to intervene in achieving …

Variant Superficial Epigastric Supply To The Anterior Abdominal Wall Arising From Inferior Epigastric Perforators: A Neonatal Case Report, Daniël J. Van Tonder, Natalie Keough, Martin Louis Van Niekerk, Albert Van Schoor

COM Scholarship

Introduction: Understanding superficial epigastric vessel anatomy is crucial for abdominal surgeries like laparoscopy, especially in neonates, to prevent injury. While standard courses are described, variations occur. This case report highlights a unique anatomical variation in the superficial epigastric artery found during the dissection of a stillborn neonatal cadaver. Case Report: In contrast to the usual origin from the femoral artery, this variation features the inferior epigastric artery penetrating the anterior abdominal wall near the umbilicus and branching superiorly to supply the superficial abdominal wall. Conclusions: This distinctive vascular configuration, which to the best of our knowledge has not been previously …

Dose-Dependent Developmental Toxicity Of Cisplatin In Zebrafish Embryos, Reagan D. Sellers, Katherine T. Doucet, Jinhee Park, Andrea Florian

SPARK Symposium Presentations

Cisplatin is a widely used chemotherapy drug for treating various types of cancer. Although cisplatin is effective in killing cancer, it can also cause toxic side effects in normal tissues. Because cisplatin can cross the placental barrier, its use during pregnancy is generally avoided, particularly during early embryonic stages of fetal development. Exposure to cytotoxic drugs during embryogenesis may lead to developmental abnormalities, birth defects, or pregnancy complications. Understanding how cisplatin affects early development is therefore important.          
       Zebrafish (Danio rerio) are an established model for studying developmental toxicity due to their rapid external development, transparent embryos, and genetic similarity to …

Intersections Of Art And Medicine, Lina Adwer

EMET Projects

No abstract provided.

Gust, Stroll, Veil, Jungeun Park

Masters Theses

I witness the unsettling and chaotic moments of everyday life:

blood clots in fried eggs, a dead rat on my porch, mites crawling on our skin . . .

These quiet tragedies exist with almost brutal indifference!

We eat, digest, excrete. We menstruate. We parasitize. We coexist.

I seek the intersection of repulsion and wonder in my daily experience and body sensations, visualizing unseen stimuli. I employ veil as a strategy. It conceals yet reveals. Sometimes, it acts as a transparent layer, sharpening what lies beneath. Other times, it blurs colors and forms, rendering them ambiguous. Veil transforms, entices, and …

Anatomy In Ink, Gabriel Scally

HCA Healthcare Journal of Medicine

In the intersection of medicine and art lies a profound synergy that nurtures both professional and personal well-being. This piece embodies this connection through a detailed and abstract representation of the human body and its complexities. At the center of the piece, the gross anatomical depiction of the head and neck serves as a nod to the foundational knowledge in medicine. Surrounding this central figure is an intricate conglomeration of medical elements, including the inner ear canal, a fetus, a hand, an eye, the brain, nerves, chemical elements, microbiology, and excerpts from the Hippocratic Oath, tying together aspects from basic …

Legal Disputes Over Frozen Embryos After Dobbs: A Retrospective Study Of Claims, Contracts, And Liability In Cases Of Divorce Or Separation, Gerard Letterie, Dov Fox

Pace Law Review

This study reviewed legal claims and clinic liability over disputed frozen embryos in cases of divorce or separation. Our data shows that one-third of cases had no prior arrangement regarding disposition about what to do in the event of separation or divorce. When agreements were in place they were rarely clear enough to determine the court’s resolution in these cases. In a post-Dobbs era, absence of adequate guidance could have significant implications regarding liability for all parties.

Are Embryos Or Fetuses Brain Dead? Implications For The Abortion Debate, Greer Donley

Pace Law Review

Most state abortion definitions exclude the removal of a dead fetus, attempting to distinguish miscarriage and abortion care. But what does “dead” mean at the earliest stages of potential life? There is a consensus at the end of life that death not only encompasses the cessation of cardiac activity, but also brain death. This symposium essay considers whether life can only begin with the emergence of brain life and if so, how that might impact the abortion debate. The most rudimentary brain waves cannot be detected in an embryo before roughly the eighth week of pregnancy; the capacity for feeling …

Personhood, Politics, Assisted Reproduction, And The Law Post-Dobbs, Myrisha S. Lewis

Pace Law Review

With the end of the federal constitutional right to abortion, state legislatures and state courts have become far more important in the sphere of reproductive rights. Before Dobbs, anti-abortion advocates had significant (albeit increasingly porous) ceilings on what they could prohibit in relation to reproductive health care. A significant check on those actions is now gone.

In the wake of Dobbs, societal debates about personhood have increased and expanded in terms of their practical implications. Before Dobbs, anti-abortion advocates admitted that Roe and subsequent cases limited the scope of their arguments, especially in relation to the legality …

The Role Of Sox9 In Epicardial-Mediated Cardiovascular Development And Valve Homeostasis, Andrew Brantley Harvey

MUSC Theses and Dissertations

Congenital heart defects (CHDs) are the most common birth defects in humans, affecting as many as 1% of live births, thereby representing a major public health burden. These defects arise when signaling pathways and mechanical forces guiding heart development are disrupted, either by genetic mutations, aneuploidies, environmental influences, or any combination of these factors. The vast majority of CHDs have undetermined etiologies. Understanding the molecular and cellular mechanisms of normal heart development is critical for unraveling the origins of CHDs and for developing more effective diagnostics and interventional treatments for those affected by cardiovascular diseases of developmental origin.

The epicardium …

Prevalence, Persistence And Microscopic Aspects Of The Vomeronasal Organ In Normal Versus Embryos With Chromosomal Abnormalities, Carmen Constantina Martinescu, Marius Alexandru Moga, Codrut Ioan Ciurea, Lorena Dima, Liana Ples, Andreea Neculau

Journal of Mind and Medical Sciences

Background. The objective of this study was to describe the histological and immunohistochemical aspects of vomeronasal organ in two groups of (normal and pathological) embryos and fetuses, with chromosomal morphological abnormalities. Methods. The research was based on a retrospective, descriptive analysis, carried out over a period of 5 years. The study included 46 biopsy fragments taken from aborted embryos and fetuses aged between 9 and 23 weeks. We compared the microscopic structure of the vomeronasal organ using different histologic and immunohistochemical staining procedures. Results. Our results showed that in both groups of embryos and fetuses there are three major stages …

Birth Defect Trends Within Texas Public Health Region 11, 2000-2019: An Analysis Of Texas Department Of State Health Services Public Data., Miguel A. Lopez, Jonathan M. Hebert, Padmanabhan Rengasamy

Research Symposium

South Texas is a predominantly Hispanic region with high rates of chronic illness, poor healthcare access, and a history of birth defect clusters. Between 1986 and 1991, 47 cases of anencephaly in Cameron County were linked to elevated fumonisins in the region’s corn-based diet, prompting a series of ongoing public health efforts. This paper aims to identify changes in prevalence for CNS defects, in addition to cardiac, circulatory, gastrointestinal, and genitourinary defects in South Texas within the last two decades. Public data on 20 birth defects from the Texas Department of State Health Services were obtained for decades 2000-2010 and …

History Of Clover Leaf Syndrome, Isabella Perez

Mako: NSU Undergraduate Student Journal

The purpose of this paper is to summarize the history of clover leaf syndrome and describe the newest advancements made to treat it. Clover leaf syndrome is more formally referred to as Kleeblattschadel syndrome. Information was gathered from several scholarly, peer-reviewed articles, and was condensed down into the key takeaways. This syndrome impacts the formation of the skull due to premature fusion of its sutures, creating a tri-lobar skull that resembles a clover leaf. This premature fusion is referred to as a type of craniosynostosis and has been linked to causing several other health complications ranging in severity. This is …

Encephaloceles: A Comprehensive Exploration Of Research, Causes, Prevention, And Innovative Approaches To Diagnosis And Treatment, Amanda N. Bautista

Mako: NSU Undergraduate Student Journal

Encephaloceles, a rare medical condition derived from Greek words meaning "brain hernia," involve the protrusion of brain tissue, cerebrospinal fluid, or membranes through a defect in the skull. These anomalies often present at birth and can occur in various locations on the skull. Recent research has shed light on the possible causes of encephaloceles, including genetic factors such as the Sonic Hedgehog pathway and inadequate folic acid intake during pregnancy. Folic acid is essential for proper neural tube closure during fetal development, making it a key preventive measure.

Emerging treatments for encephaloceles show promise, with a focus on mesenchymal stem …

Parental Instincts: The Neurological And Biological Factors Associated With Parenthood, Jared Reeder

Undergraduate Honors Theses

The following project involves a systematic review of the scientific literature on neural and biological changes of mothers and fathers in parenthood. Until very recently, little scientific research was devoted to studying how bearing children affects a man or woman’s long-term biology. Over the last twenty years, studies of neuroplastic changes in new mothers show specific neural mechanisms responsible for altering the behaviors of mothers during and after pregnancy. These changes in neuroplasticity alter behavior in such a way that led to mothers requiring less sleep and being more prone to hearing the cries of their children. In addition to …

Therapies For Mitochondrial Disorders, Kayli Sousa Smyth, Anne Mulvihill

SURE Journal: Science Undergraduate Research Experience Journal

Mitochondria are cytoplasmic, double-membrane organelles that synthesise adenosine triphosphate (ATP). Mitochondria contain their own genome, mitochondrial DNA (mtDNA), which is maternally inherited from the oocyte. Mitochondrial proteins are encoded by either nuclear DNA (nDNA) or mtDNA, and both code for proteins forming the mitochondrial oxidative phosphorylation (OXPHOS) complexes of the respiratory chain. These complexes form a chain that allows the passage of electrons down the electron transport chain (ETC) through a proton motive force, creating ATP from adenosine diphosphate (ADP). This study aims to explore current and prospective therapies for mitochondrial disorders (MTDS). MTDS are clinical syndromes coupled with abnormalities …

Fortuitous Diagnosis Of Total Anomalous Pulmonary Venous Return In A Newborn With Hypoglycemia, Joseph Maes, Terence Zach

Child Health Research Institute Pediatric Research Forum

No abstract provided.

The Effect Of Sub 5% Oxygen Tension On In Vitro Human Embryo Development, Bradley James Link

EVMS School of Health Professions Theses & Dissertations

Objective: To determine the impact of < 5% O₂ tension on the in vitro development of human pre-implantation embryos. It was hypothesized that the optimal O₂ tension would differ from the commonly utilized 5%, as shown by beneficial effects after the implementation of a more physiological O₂ tension such as 2% for either the partial or full duration of in vitro culture.

Aim: To conduct a randomized controlled study to determine the effect of O₂ tension during in vitro human embryo culture on the production of reactive oxygen species (ROS), apoptosis, gene expression and embryo development.

Background: The …

The Effects Of Mapk Signaling On The Development Of Cerebellar Granule Cells, Kerry Morgan

Honors Scholar Theses

The granule cells are the most abundant neuronal type in the human brain. Rapid proliferation of granule cell progenitors results in dramatic expansion and folding of the cerebellar cortex during postnatal development. Mis-regulation of this proliferation process causes medulloblastoma, the most prevalent childhood brain tumor. In the developing cerebellum, granule cells are derived from Atoh1-expressing cells, which arise from the upper rhombic lip (the interface between the roof plate and neuroepithelium). In addition to granule cells, the Atoh1 lineage also gives rise to different types of neurons including cerebellar nuclei neurons. In the current study, I have investigated the …

Use Of Umbilical Cord Mesencymal Stem Cells In The Treatment Of Severe Covid-19 Pneumonia, Michelle Joy De Vera, Marc Joseph Buensalido, Jan Jorge Francisco, Jia An Bello, Alan Olavere, Alma Calavera, Josephine Ramos, Norma Ona, Eyreka Escalambre, Marvin Delos Santos, Samuel Bernal, Vasiliki E. Kalodimou

Ateneo School of Medicine and Public Health Publications

A proposed mechanism of severe Corona virus Disease-2019 (COVID-19) is a deregulated innate immune response to an infection with SARS-CoV-2 resulting in cytokine release syndrome (CRS). Mesencymal stem cells (MSC) have been shown to have immunomodulatory effects and may attenuate the CRS. We present 11 cases of severe COVID-19 pneumonia treated with umbilical cord-derived, non-HLA matched MSC administered as four separate intravenous doses, 5×105 cells/kg. Clinical symptoms, measurements of inflammatory mediators and cytokines (IL6, IL10, IFN-γ, TNF-α), and radiological results were recorded for each patient. Although there were large variations in baseline cytokine pattern elevation, all cytokine levels decreased in …

Contraceptive Methods In The United States: The Question Of Abortive Mechanisms, Tara Ferenczy

Senior Honors Theses

This thesis reviews the many methods of contraception available in the United States. Although society’s understanding of women’s health has become a major topic, there is still a significant deficit of information regarding how the accessible methods affect women’s bodies, specifically reproductive tissue. The thesis analyzes numerous contraceptive options focusing specifically on the mechanisms of action to determine whether options have abortifacient properties so that readers may develop educated opinions regarding medical and ethical uses. Information involving strengths and limitations of each technique and the effects on both the female body and the reproductive material assist in understanding the process …

Defects In Fetal Mouth Movement And Pharyngeal Patterning Underlie Cleft Palate Caused By Retinoid Deficiency., Regina Friedl

Electronic Theses and Dissertations

Cleft palate is a common birth defect. Etiologic mechanisms of palate cleft include defects in palate morphogenesis, mandibular growth, or spontaneous fetal mouth movement. Cleft palate linked to deficient fetal mouth movement has been demonstrated directly only in a single experimental model of loss of neurotransmission. Here, using retinoid deficient mouse embryos, we demonstrate directly for the first time that deficient fetal mouth movement and cleft palate occurs as a result of mis-patterned development of pharyngeal peripheral nerves and cartilages. Retinoid deficient embryos were generated by inactivation of retinol dehydrogenase 10 (Rdh10), which is critical for production of …

Arterial Distribution Of The Human Aorta: An Examination Of The Evolutionary, Developmental, And Physiological Bases Of Asymmetry., Brandon Oddo, Cooker Storm

Seaver College Research And Scholarly Achievement Symposium

The study of anatomy contends that “form follows function”; a disciplinary theme purporting that anatomical structures (i.e., cells, tissues, and organs) have a shape that serves its proper function. With this in mind, it is unclear why human arterial distribution off the aortic arch is asymmetrical, while the corresponding venous anatomy is symmetrical. We investigated the evolutionary, developmental, and physiological bases for the asymmetry of aortic arch branches in humans. First, we investigated the cardiovascular anatomy of ancestral species to determine if, and at what level, anatomical divergence (from aortic symmetry to asymmetry) occurs. Second, we examined the formation of …

Factors Affecting The Survival And Implantation Of Human Blastocysts Following Vitrification, Hamish Barblett

Theses: Doctorates and Masters

The increased cell numbers, presence of the blastocoel and rapid cell re-organisation have required the development of specific survival criteria post warm to effectively select the most viable blastocyst for transfer. Pre-freeze blastocyst expansion and post warm re-expansion have been shown to contribute significantly to the chances of an implantation and subsequent live birth. The aim of this study was to explore factors that influence the outcome of blastocyst transfers after vitrification and warming, and hopefully improve outcomes by further applying improvements in future cycles. Variables from 8 years of vitrified/warmed blastocysts were retrospectively compiled and analysed to determine the …

Spag17 Deficiency Impairs Neuronal Cell Differentiation In Developing Brain, Olivia J. Choi

Theses and Dissertations

The development of the nervous system is a multi-level, time-sensitive process that relies heavily on cell differentiation. However, the molecular mechanisms that control brain development remain poorly understood. We generated a knockout (KO) mouse for the cilia associated gene Spag17. These animals develop hydrocephalus and enlarged ventricles consistent with the role of Spag17 in the motility of ependymal cilia. However, other phenotypes that cannot be explained by this role were also present. Recently, a mutation in Spag17 has been associated with brain malformations and severe intellectual disability in humans. Therefore, we hypothesized that Spag17 plays a crucial role in …

Case Report: A Hard Cyst To Swallow, Anjalee Choudhury, Joshua Wood, Kristan Diaz-Rios, Jyothi Swarup

School of Medicine Publications

One day old neonate was born at 37 weeks gestation to a 41-year-old Gravida 5 Para 5 born via uncomplicated caesarean section. A physical exam of the newborn had unremarkable findings except for minor skin tags on the neck and a cleft palate.

Identifying The 5’End Of The Camta1 Genes In Zebrafish, Morgan Fronk

Undergraduate Honors Theses

Congenital heart diseases (CHDs) are a significant cause of infant death and are frequently caused by mutations in transcription factors. Camta1 (calmodulin binding transcription activator 1) is a transcription factor that has been proposed as a modulator in embryonic heart development and a possible cause of CHDs. The only other known member of its family in vertebrates is involved in activating a hypertrophy gene program in adult heart failure. Unlike camta2, camta1 is expressed in the embryonic heart during heart looping. However, few studies have been done on camta1. In zebrafish, there are two camta1 ohnologs (homologs created through …

Embryonic Transcription Factor Expression In Mice Predicts Medial Amygdala Neuronal Identity And Sex-Specific Responses To Innate Behavioral Cues., Julieta E Lischinsky, Katie Sokolowski, Li Peijun, Shigeyuki Esumi, Yasmin Kamal, Meredith Goodrich, Livio Oboti, Timothy R Hammond, Meera Krishnamoorthy, Daniel Feldman, Molly Huntsman, Judy Liu, Joshua G Corbin

Pediatrics Faculty Publications

The medial subnucleus of the amygdala (MeA) plays a central role in processing sensory cues required for innate behaviors. However, whether there is a link between developmental programs and the emergence of inborn behaviors remains unknown. Our previous studies revealed that the telencephalic preoptic area (POA) embryonic niche is a novel source of MeA destined progenitors. Here, we show that the POA is comprised of distinct progenitor pools complementarily marked by the transcription factors Dbx1 and Foxp2. As determined by molecular and electrophysiological criteria this embryonic parcellation predicts postnatal MeA inhibitory neuronal subtype identity. We further find that Dbx1-derived and …

Mechanism For Generation Of Left Isomerism In Ccdc40 Mutant Embryos, Kelsey Sugrue, Irene E. Zohn

Pediatrics Faculty Publications

Leftward fluid flow in the mouse node is generated by cilia and is critical for initiating asymmetry of the left-right axis. Coiled-coil domain containing-40 (Ccdc40) plays an evolutionarily conserved role in the assembly of motile cilia and establishment of the left-right axis. Approximately one-third of Ccdc40lnks mutant embryos display situs defects and here we investigate the underlying mechanism. Ccdc40lnks mutants show delayed induction of markers of the left-lateral plate mesoderm (L-LPM) including Lefty1, Lefty2 and Nodal. Consistent with defective cilia motility compromising fluid flow across the node, initiation of asymmetric perinodal Cerberus like-2 ( …