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Articles 2281 - 2310 of 7155
Full-Text Articles in Entire DC Network
Neuroanatomy Of The Blackspotted Rockskipper, Entomacrodus Striatus, Pooja Dayal
Neuroanatomy Of The Blackspotted Rockskipper, Entomacrodus Striatus, Pooja Dayal
Williams Honors College, Honors Research Projects
Here I characterized the central neuroanatomy of the Blackspotted Rockskipper, Entomacrodus striatus, native to French Polynesia. The neuroanatomy of E. striatus has not been studied prior to this paper. I used several histology and antibody staining techniques to accomplish this, including Crystal Violet, immunohistochemistry, immunofluorescence, and Bielschowsky’s Silver Nitrate staining. This paper describes the most successful techniques used, identifies major structures in the species’ neuroanatomy, and also explains why studying E. striatus is important in the future of vertebrate research.
The Cardiovascular Response To Acute Hypoxic Conditions In Danio Rerio, Bryce Fetterman
The Cardiovascular Response To Acute Hypoxic Conditions In Danio Rerio, Bryce Fetterman
Williams Honors College, Honors Research Projects
There are many fish that can withstand hypoxia levels. One in particular is the zebrafish (Danio rerio). The zebrafish is a small-sized, Cyprinid teleost fish, and has been used in a laboratory setting for many reasons. A few reasons being that they are widely available, easy to care for, and the cost for these fish are very low. There are various reasons why these fish are used as a model. One main reason is because their cardiovascular system is one of the first developing organs. This allows for better resolution when studying the cardiovascular system. The purpose of …
Oxidative Stress Analysis Of Placental Tissue In The Rupp Pregnant Rat, Natalie Ganios
Oxidative Stress Analysis Of Placental Tissue In The Rupp Pregnant Rat, Natalie Ganios
Williams Honors College, Honors Research Projects
Preeclampsia is a disease associated with a vasoconstrictive phenotype due to disrupted signaling in the vascular endothelial growth factor (VEGF) relaxation pathway. The purpose of these studies is to determine the level of oxidative damage that is occurring in the placenta of the reduced uterine perfusion pressure (RUPP) rat, which serves as a common model for preeclampsia. RUPP and SHAM placenta tissue will be examined for oxidative stress as an indicator of tissue damage associated with the pathologically induced ischemia. Oxidative stress in the placental tissue will be measured by performing the following oxidative stress assays: 8-isoprostane test, TBARS assay, …
Modulation Of Epileptogenesis: A Paradigm For The Integration Of Enzyme-Based Microelectrode Arrays And Optogenetics, Corwin R. Butler, Jeffery A. Boychuk, Francois Pomerleau, Ramona Alcala, Peter Huettl, Yi Ai, Johan Jakobsson, Sidney W. Whiteheart, Greg A. Gerhardt, Bret N. Smith, John T. Slevin
Modulation Of Epileptogenesis: A Paradigm For The Integration Of Enzyme-Based Microelectrode Arrays And Optogenetics, Corwin R. Butler, Jeffery A. Boychuk, Francois Pomerleau, Ramona Alcala, Peter Huettl, Yi Ai, Johan Jakobsson, Sidney W. Whiteheart, Greg A. Gerhardt, Bret N. Smith, John T. Slevin
Physiology Faculty Publications
BACKGROUND: Genesis of acquired epilepsy includes transformations spanning genetic-to- network-level modifications, disrupting the regional excitatory/inhibitory balance. Methodology concurrently tracking changes at multiple levels is lacking. Here, viral vectors are used to differentially express two opsin proteins in neuronal populations within dentate gyrus (DG) of hippocampus. When activated, these opsins induced excitatory or inhibitory neural output that differentially affected neural networks and epileptogenesis. In vivo measures included behavioral observation coupled to real-time measures of regional glutamate flux using ceramic-based amperometric microelectrode arrays (MEAs).
RESULTS: Using MEA technology, phasic increases of extracellular glutamate were recorded immediately upon application of blue light/488 nm …
Divalent Metal Cation Entry And Cytotoxicity In Jurkat T Cells: Role Of Trpm7 Channels, Alayna N. Mellott
Divalent Metal Cation Entry And Cytotoxicity In Jurkat T Cells: Role Of Trpm7 Channels, Alayna N. Mellott
Browse all Theses and Dissertations
Humans are exposed daily to a variety of metals that can be harmful to our immune system. Although certain divalent metal cations are essential for numerous cellular functions and are critical trace elements in humans, the uptake mechanisms of these ions remain mostly unknown. Transient receptor potential melastatin 7 (TRPM7), which is expressed in a variety of human cell types, including lymphocytes and macrophages, conducts many divalent metal cations. TRPM7 channels are largely inactive under normal physiological conditions due to cytoplasmic magnesium acting as a channel inhibitor. Magnesium is a cofactor for many biochemical reactions. Low serum levels of magnesium, …
The Dynamics Of Life And Death: Mitochondrial Fragmentation, Mitophagy, And Swelling During Neuronal Ischemia/Reperfusion Injury, Anthony Roy Anzell
The Dynamics Of Life And Death: Mitochondrial Fragmentation, Mitophagy, And Swelling During Neuronal Ischemia/Reperfusion Injury, Anthony Roy Anzell
Wayne State University Dissertations
Ischemic brain injury caused by cardiac arrest or stroke continue to be leading caused of death and disability in the U.S. While restoration of blood flow is necessary to salvage ischemic tissue, reperfusion paradoxically exacerbates injury via the production of reactive oxygen species, which, damage mitochondria and induce cell death. Therefore, it is critical to have stringent quality control mechanisms to ensure a healthy mitochondrial network. Mitochondrial fragmentation has been well characterized in the progression of ischemia/reperfusion and its association with cell death. Conversely, the role of mitophagy has been controversial regarding whether upregulation of mitophagy serves as a restorative …
Causes And Potential Treatment For Altered Muscle Metaboreflex Control Of Ventricular Vascular Interactions In Heart Failure, Joseph Thomas Mannozzi
Causes And Potential Treatment For Altered Muscle Metaboreflex Control Of Ventricular Vascular Interactions In Heart Failure, Joseph Thomas Mannozzi
Wayne State University Dissertations
Muscle Metaboreflex Activation occurs as a result of metabolic accumulation within active skeletal muscle that stimulates type III and IV afferents. This reflex in healthy subjects causes increased ventricular contraction, tachycardia, enhanced central blood volume mobilization, and 2 mediated vasodilation as a means to increase mean arterial pressure and thereby improve perfusion pressure of active skeletal muscle. However, to date no study has evaluated the interaction between the observed changes in ventricular and vascular dynamics or how the reflex impacts contraction relaxation dynamics before and after induction of heart failure Furthermore, no study has evaluated the impact of chronic selective …
Sport Specialization And Its Effects On Collegiate Athlete Injury Rate, Alexander Duane Yager
Sport Specialization And Its Effects On Collegiate Athlete Injury Rate, Alexander Duane Yager
EWU Masters Thesis Collection
No abstract provided.
Muscle Soreness And Damage During Wildland Firefighter Critical Training, Katherine Sue Christison
Muscle Soreness And Damage During Wildland Firefighter Critical Training, Katherine Sue Christison
Graduate Student Theses, Dissertations, & Professional Papers
Introduction: Wildland firefighters (WLFF) undergo a critical training (CT) period immediately before the firefighting season. The intensity of CT exercise could lead to muscle damage, as previously reported cases of rhabdomyolysis in WLFFs have been documented. This study established the effects of activities performed during a two-week CT period on acute markers of muscle damage in WLFFs.
Methods: 18 male and 3 female Type I Interagency Hotshot WLFFs were studied during a 14-day critical training period. Upper- (US) and lower-body (LS) muscle soreness and daily body weight (BW) scales were collected. Venous blood was collected on Days 1, 4, 8, …
Mechanotransduction Of Leukocyte Transmigration, Cynthia Aguilar
Mechanotransduction Of Leukocyte Transmigration, Cynthia Aguilar
Electronic Theses and Dissertations, 2020-2023
The endothelium is among the most mechanically enriched environments in the body. It is exposed to a range of hemodynamic-induced and extracellular forces. Of these extracellular forces, the migration of leukocytes through the endothelium will contribute both to classic immune response and development of certain pathologies. While the path of migration across the endothelium will depend on leukocyte and vascular bed type, recent evidence has suggested that the intercellular mechanical microenvironment and forces are also equally as important to this process. Therefore, we present here a model that mimics specific physiological states of a stagnant hemodynamic flow in which we …
Glp-1 Mediated Diuresis And Natriuresis Are Blunted In Heart Failure And Restored By Selective Afferent Renal Denervation, Kenichi Katsurada, Shyam Sundar Nandi, Hong Zheng, Xuefei Liu, Neeru M. Sharma, Kaushik K. Patel
Glp-1 Mediated Diuresis And Natriuresis Are Blunted In Heart Failure And Restored By Selective Afferent Renal Denervation, Kenichi Katsurada, Shyam Sundar Nandi, Hong Zheng, Xuefei Liu, Neeru M. Sharma, Kaushik K. Patel
Journal Articles: Cellular & Integrative Physiology
BACKGROUND: Glucagon-like peptide-1 (GLP-1) induces diuresis and natriuresis. Previously we have shown that GLP-1 activates afferent renal nerve to increase efferent renal sympathetic nerve activity that negates the diuresis and natriuresis as a negative feedback mechanism in normal rats. However, renal effects of GLP-1 in heart failure (HF) has not been elucidated. The present study was designed to assess GLP-1-induced diuresis and natriuresis in rats with HF and its interactions with renal nerve activity.
METHODS: HF was induced in rats by coronary artery ligation. The direct recording of afferent renal nerve activity (ARNA) with intrapelvic injection of GLP-1 and total …
The Evolution Of Dragons, Laura J. Mayfield
The Evolution Of Dragons, Laura J. Mayfield
Undergraduate Theses, Professional Papers, and Capstone Artifacts
Dragons have been depicted in human art as early as 4500 BCE. For centuries, these fantasy creatures have inspired countless folk and fantasy tales, as well as appearing in the art of different cultures around the world. Now there are thousands of different depictions of these huge, flying, fire-breathing lizards, but are any of them possible? In this study, I reference peer-reviewed scientific articles, phylogenetic analysis, and paleoart studies to create biologically-sound dragons. Basing the dragon lineage on a real branch of webbed-winged scansoriopterygids—an extinct family of climbing and gliding maniraptoran dinosaurs—I explored the possible wing-structure, fire-breathing abilities, and effects …
Demographics And Physical Activity Levels Of Esports Athletes At The University Of Akron, Madison Morgan, Patrick Barrett, Madeleine Stoll
Demographics And Physical Activity Levels Of Esports Athletes At The University Of Akron, Madison Morgan, Patrick Barrett, Madeleine Stoll
Williams Honors College, Honors Research Projects
Esports is rapidly growing and gaining popularity, however there is a lack of research regarding physical activity levels of eSport athletes, especially those at the collegiate level. This study summarizes the current research and findings related to exercise, overall health, and video game performance. All varsity eSport athletes for The University of Akron varsity team were “participants” in this study. A survey tool was designed through Qualtrics (Qualtrics 2020© Provo, UT), an online survey instrument, to assess current physical activity levels, preferences and tolerance for exercise intensity, and perceptions about how physical activity affects gaming performance. This survey was distributed …
Effects Of A Strength Training Intervention And Quality Of Life: Case Study On A Sedentary Adult Female, Lucas Frazier
Effects Of A Strength Training Intervention And Quality Of Life: Case Study On A Sedentary Adult Female, Lucas Frazier
Williams Honors College, Honors Research Projects
The purpose of the project is to evaluate physiological and quality of life changes in a
sedentary, senior-aged (55 or older) female using a six-week strength training
intervention. This case study will instruct how to perform a push-pull-legs split
routine by going to the gym three times per week. Prior to the six week intervention,
both quantitative and qualitative variables will be collected to assess baseline data,
including the subject’s resting heart rate, resting blood pressure, grip strength, one-
repetition maximum on seven whole body exercises (dumbbell bicep curl, tricep
pushdown, barbell bench press, wide-grip lat pull-down, seated dumbbell press, …
Non-Invasive Method For Leptin Supplementation In Zebrafish (Danio Rerio), Regan Mcnamara
Non-Invasive Method For Leptin Supplementation In Zebrafish (Danio Rerio), Regan Mcnamara
Williams Honors College, Honors Research Projects
I tested the hypothesis that recombinant leptin protein can be introduced to zebrafish in vivo through non-invasive soaking in a solution containing the protein. One way to study various molecules’ effects in vivo is through intraperitoneal or intracerebroventricular injections during the embryonic or larval stage, which is invasive, difficult to administer, and can have a high mortality rate. 48 hours post fertilization (hpf) zebrafish were soaked in a His-tagged recombinant leptin protein solution at 10 nM and 100 nM concentrations (produced by Genscript). After soaking, zebrafish larvae were washed extensively to remove all recombinant protein on their exterior before homogenization. …
Artificially-Generated Scenes Demonstrate The Importance Of Global Properties During Early Scene Perception, Mavuso Wesley Mzozoyana
Artificially-Generated Scenes Demonstrate The Importance Of Global Properties During Early Scene Perception, Mavuso Wesley Mzozoyana
Browse all Theses and Dissertations
During scene perception, studies have shown the importance of the global distribution of a scene. Electrophysiological studies have found these global effects concentrated corresponding to the second positive and first negative peaks (P2 and N1, respectively) of the Event-related potential (ERP) during the first 600 ms of scene perception. We sought to understand in Experiment 1, to what extent early responses to scenes were driven by mid-level global information such as the degree of naturalness or openness in a scene image in the absence of specific low-and high-level information (color and semantic object detail). This was done using artificially-generated stimuli …
Exploring The Impact Of Affective Processing On Visual Perception Of Large-Scale Spatial Environments, Auroabah S. Almufleh
Exploring The Impact Of Affective Processing On Visual Perception Of Large-Scale Spatial Environments, Auroabah S. Almufleh
Browse all Theses and Dissertations
This thesis explores the interaction between emotions and visual perception using large scale spatial environment as the medium of this interaction. Emotion has been documented to have an early effect on scene perception (Olofsson, Nordin, Sequeira, & Polich, 2008). Yet, most popularly-used scene stimuli, such as the IAPS or GAPED stimulus sets often depict salient objects embedded in naturalistic backgrounds, or “events” which contain rich social information, such as human faces or bodies. And thus, while previous studies are instrumental to our understanding of the role that social-emotion plays in visual perception, they do not isolate the effect of emotion …
Mindfulness, Aortic Wave Reflection, And Arterial Stiffness, Sarah Lewallen
Mindfulness, Aortic Wave Reflection, And Arterial Stiffness, Sarah Lewallen
Dissertations, Master's Theses and Master's Reports
Cardiovascular disease and hypertension are leading causes of death worldwide. The mitigation of high blood pressure is essential in decreasing the prevalence of cardiovascular-related deaths worldwide. Stress and anxiety are known to play a role in augmenting blood pressure in individuals of all ages. This increase in pressure can result in premature stiffening of large arteries in systemic circulation. Mindfulness is an ancient, non-secular practice which aids in stress reduction. Decentering, an aspect of mindfulness, involves accepting thoughts as transient rather than permanent associations. The purpose of this project was to examine the relationship between cardiovascular health and mindfulness practices. …
Squids Use Multiple Escape Jet Patterns Throughout Ontogeny, Carly A. York, Ian K. Bartol, Paul S. Krueger, Joseph T. Thompson
Squids Use Multiple Escape Jet Patterns Throughout Ontogeny, Carly A. York, Ian K. Bartol, Paul S. Krueger, Joseph T. Thompson
Biological Sciences Faculty Publications
Throughout their lives, squids are both predators and prey for a multitude of animals, many of which are at the top of ocean food webs, making them an integral component of the trophic structure of marine ecosystems. The escape jet, which is produced by the rapid expulsion of water from the mantle cavity through a funnel, is central to a cephalopod's ability to avoid predation throughout its life. Although squid undergo morphological and behavioral changes and experience remarkably different Reynolds number regimes throughout their development, little is known about the dynamics and propulsive efficiency of escape jets throughout ontogeny. We …
Spinal Motor Neuron Excitability And Balance Control Changes Following Downslope Walking, Nikki Aitcheson-Huehn
Spinal Motor Neuron Excitability And Balance Control Changes Following Downslope Walking, Nikki Aitcheson-Huehn
Theses and Dissertations (Comprehensive)
Downslope walking (DSW) has been proposed as a rehabilitation tool for people with Multiple Sclerosis (PwMS) although there are mixed findings in young adults (YA) regarding the balance control changes, despite both populations experiencing depressed spinal motor neuron (MN) pool excitability. Our aim was to determine whether YAs could demonstrate improved balance control in conjunction with SOL H reflex depression (estimate of spinal MN excitability) following DSW. We also aimed to determine whether reciprocal inhibition was a potential mechanism for H reflex depression via conditioned SOL H reflexes. Thirty young adults (23±1.4y, 6 males) were assigned to 30-minutes of DSW …
An Evidence-To-Practice Review On The Efficacy Of Instrument Assisted Soft Tissue Mobilization, Matthew G. Moore, Aneika R. Daley, Zachary Winkelmann
An Evidence-To-Practice Review On The Efficacy Of Instrument Assisted Soft Tissue Mobilization, Matthew G. Moore, Aneika R. Daley, Zachary Winkelmann
Clinical Practice in Athletic Training
Instrument assisted soft tissue mobilization (IASTM) is the use of specially designed instruments that provide a mobilizing effect to soft tissue to help with decreasing pain and improving range of motion. Over the years, there has been an increase in the use of IASTM as well as an increase in research for its effects on soft-tissue injuries, range of motion (ROM), and pain management; however, the results have not been supported as a whole. Evidence for the positive outcomes from the use of IASTM, in conjunction with therapeutic exercise or other interventions, has been lacking in many studies. As a …
Seasonal Temperature Changes In Three Midwestern Wastewater Streams And The Effects On Fish Assemblages And Physiology, Ryan William Sparks
Seasonal Temperature Changes In Three Midwestern Wastewater Streams And The Effects On Fish Assemblages And Physiology, Ryan William Sparks
Masters Theses
Midwestern United States undergo extreme temperature and precipitation fluctuations throughout the year, which leads to changing habitats within Illinois river systems. Wastewater treatment facilities have long been used to treat sewage and reduce the organic products in sewage before releasing it into aquatic environments. Wastewater treatment facilities must maintain optimal conditions, especially temperature, for reproduction and growth of facilitated bacteria that break down organic materials in wastewater. The objectives for this study were to determine the thermal effects of wastewater treatment facilities on receiving waters; and secondly, to investigate the influence of these wastewater facilities on fish abundance and assemblages. …
Seasonal Variation In Mitochondrial Bioenergetics Of The Bluegill Sunfish, Lepomis Macrochirus, From A Shallow Midwest River, Derick Isaac Lamptey
Seasonal Variation In Mitochondrial Bioenergetics Of The Bluegill Sunfish, Lepomis Macrochirus, From A Shallow Midwest River, Derick Isaac Lamptey
Masters Theses
As average global temperature increase, the frequency and magnitude of extreme temperatures in shallow aquatic ecosystems are more ubiquitous. In order to understand how these changing thermal regimes affect aquatic ectotherms, it is essential to develop studies evaluating the response of ectotherms to seasonal fluctuating thermal regimes. Previous studies on fluctuating temperature regimes have reported an increased physiological stress leading to morphological, behavioral and biochemical adaptations. From the latter, the adaptive capacity and seasonal performance associated with optimal function of the oxidative phosphorylation system (OXPHOS) are key for species persistence. However, studies on this matter are scarce. This study explores …
Neurodegenerative Modeling: Tau Protein, Degradative Pathways, And Gene Expression Profiling Of Human Ipsc-Derived Neural Precursors And Differentiated 3-D Neural Sphere Versus 2-D Monolayer Cultures, Kyle H. Anthoney
Cal Poly Humboldt theses and projects
Human induced pluripotent stem cells offer a model for human brain development and disease by differentiation into brain organoids; however, current neural culture systems lack the microenvironment, neuronal circuits and connectivity, vascular circulation, and immune system that exist in vivo. After differentiation and development of neuronal and non-neuronal cell types within two formats of cell cultures, we can visualize and recapitulate in vivo protein accumulation, gene expression, and degradative processes such as autophagy. Using RNA extraction, purification methods and reverse transcription I compared traditional monolayer cultures and novel 3-D neural sphere cultures via gene expression analysis. This analysis indicated …
Estrogen Regulation Of Mir-9-5p And Mir-9-3p Stability And Localization In The Aging Female Brain, Chun Kim
Estrogen Regulation Of Mir-9-5p And Mir-9-3p Stability And Localization In The Aging Female Brain, Chun Kim
Dissertations
In females, levels of estrogens fluctuate across the lifespan and rapidly decline during menopause. Hormone replacement therapy (HRT) has been introduced as a clinical alternative to replenish systemic levels of 17β-estradiol (E2), the primary estrogen in circulation. However, studies from the Women's Health Initiative revealed a critical period immediately following the onset of menopause where HRT is efficacious. Here, we identified the differential regulation of miRNAs, small non-coding RNAs that inhibit translation, as a potential mechanism for this temporal switch in estrogen action. Specifically, early - but not late - E2 administration following ovariectomy in a rat model of menopause …
Behavioral Ecology And Physiological Health Of Managed Populations Of Juvenile Blanding's Turtles (Emydoidea Blandingii) In Urban Wetlands, Armand Andre' Cann
Behavioral Ecology And Physiological Health Of Managed Populations Of Juvenile Blanding's Turtles (Emydoidea Blandingii) In Urban Wetlands, Armand Andre' Cann
Master's Theses
Substantial threats to reptile species biodiversity have become apparent in the last few decades. This is partly caused by significant losses in grasslands and their associate prairie-wetland ecosystems. One Midwestern prairie-wetland species, Blanding's Turtles (Emydoidea blandingii), are at risk of extirpation due to habitat loss, fragmentation, and increased predator populations. Consequently, significant head-starting efforts, a form of reintroduction conservation using captive-reared and then released turtles, have been conducted to recover populations of E. blandingii in northeastern Illinois. However, the success of these programs both locally and range-wide have not been fully quantified. Unfortunately, many approaches to guaging success involve long-term …
ผลของการรับประทานน้ำตาลต่อการไหลเวียนเลือดบริเวณแขนในทายาทเพศชายของผู้ที่มีความดันโลหิตสูง, มันตา กรกฎ
ผลของการรับประทานน้ำตาลต่อการไหลเวียนเลือดบริเวณแขนในทายาทเพศชายของผู้ที่มีความดันโลหิตสูง, มันตา กรกฎ
Chulalongkorn University Theses and Dissertations (Chula ETD)
วัตถุประสงค์ของการศึกษานี้เพื่อศึกษาผลของการรับประทานน้ำตาลซูโครสในปริมาณต่าง ๆ ต่อการไหลเวียนเลือดบริเวณแขนในทายาทเพศชายของผู้ที่มีความดันโลหิตสูง (OHT) และทายาทเพศชายของผู้ที่มีความดันโลหิตปกติ (ONT) และเพื่อศึกษาความสัมพันธ์ของระดับน้ำตาลในเลือดต่อการเกิดภาวะเครียดออกซิเดชัน โดยอาสาสมัคร (OHT = 16, ONT = 16) เข้าร่วมการทดสอบทั้งหมด 4 ครั้ง โดยแต่ละครั้งอาสาสมัครได้ดื่มสารละลายน้ำตาลซูโครสเพียง 1 ความเข้มข้นตามการสุ่ม จาก 4 ความเข้มข้นซึ่งมีปริมาณน้ำตาลซูโครส 0, 15, 30 และ 60 กรัม ปริมาตรรวม 200 มล. วัดปริมาตรการไหลของเลือดสูงสุดบริเวณแขน (peak FBF) ก่อนและหลังรับประทานน้ำตาลซูโครสทุก ๆ 30 นาที เป็นเวลา 2 ชั่วโมง และวัดระดับ plasma glucose, insulin และตัวบ่งชี้ภาวะเครียดออกซิเดชัน (protein carbonyl; PC and total antioxidant capacity; TAC) ก่อนและหลังรับประทานน้ำตาลซูโครสที่เวลา 30, 60 และ 120 นาที ผลการศึกษาพบว่ากลุ่ม OHT มีค่า peak FBF เริ่มต้นต่ำกว่ากลุ่ม ONT (22.40±1.17 vs 25.23±0.62 mL/100mLtissue/min, P < 0.0001) หลังรับประทานน้ำตาลซูโครสทุกความเข้มข้นที่เวลา 30 นาที ค่า peak FBF ของทั้ง 2 กลุ่มลดลงเมื่อเปรียบเทียบกับนาทีที่ 0 (P < 0.05) ระดับ plasma glucose และ insulin ของทั้งสองกลุ่มเพิ่มสูงขึ้นหลังจากรับประทานน้ำตาลซูโครส 30 นาที (P < 0.05) และลดลงจนกลับเข้าสู่ระดับก่อนได้รับน้ำตาลซูโครส ระดับ PC และ TAC ทุกช่วงเวลาและทุกความเข้มข้นของน้ำตาลซูโครสไม่พบการเปลี่ยนแปลงทางสถิติ (P > 0.05) จึงสรุปได้ว่าการรับประทานน้ำตาลซูโครสไม่เกิน 60 กรัม ส่งผลให้เกิดความบกพร่องในการขยายตัวของหลอดเลือดทั้งในคนทีมีและไม่มีประวัติบิดามารดาเป็นความดันโลหิตสูง แต่ไม่พบความสัมพันธ์ของระดับ plasma glucose กับการเกิดภาวะเครียดออกซิเดชัน
ผลของการให้ผงว่านหางจระเข้ทางปากร่วมกับการปลูกถ่ายเซลล์เอนโดทีเลียมโปรเจนนิเตอร์ ของมนุษย์ต่อการหายของแผลในหนูนูดไมซ์ที่เป็นเบาหวาน, สุพัสนันท์ แก้วศรีสังข์
ผลของการให้ผงว่านหางจระเข้ทางปากร่วมกับการปลูกถ่ายเซลล์เอนโดทีเลียมโปรเจนนิเตอร์ ของมนุษย์ต่อการหายของแผลในหนูนูดไมซ์ที่เป็นเบาหวาน, สุพัสนันท์ แก้วศรีสังข์
Chulalongkorn University Theses and Dissertations (Chula ETD)
การวิจัยครั้งนี้มีวัตถุประสงค์เพื่อศึกษาการหายของแผลและการเกิดหลอดเลือดใหม่ในหนูนูดไมซ์ที่เป็นเบาหวานหลังจากให้กินว่านหางจระเข้ร่วมกับการปลูกถ่าย EPCs โดยแบ่งหนูเป็น 5 กลุ่ม ได้แก่ กลุ่มควบคุม กลุ่มเบาหวาน กลุ่มเบาหวานที่ได้รับเซลล์เอนโดทีเลียมโปรเจนนิเตอร์ (1×106 เซลล์) บริเวณแผล กลุ่มเบาหวานที่ได้รับว่านหางจระเข้ 400 มิลลิกรัมต่อกิโลกรัมต่อวันทางปาก และกลุ่มเบาหวานที่ได้รับเซลล์เอนโดทีเลียมโปรเจนนิเตอร์ (1×106 เซลล์) บริเวณแผลร่วมกับการกินว่านหางจระเข้ 400 มิลลิกรัมต่อกิโลกรัมต่อวัน ทำการเหนี่ยวนำให้เป็นเบาหวานด้วยสารสเตรปโตโซโตซิน 45 มิลลิกรัมต่อกิโลกรัมทางช่องท้องวันละครั้งติดต่อกันห้าวัน เมื่อครบ 10 สัปดาห์หลังจากเหนี่ยวนำให้หนูเป็นเบาหวาน หนูแต่ละกลุ่มถูกทำให้เกิดแผลชนิดที่ถูกตัดจนถึงชั้นไขมันที่บริเวณผิวหนังทั้งสองข้างจากแนวหลังของหนู ขนาด 0.6×0.6 ตารางเซนติเมตร ในวันที่ 7 และ 14 หลังทำให้เกิดแผล ทำการศึกษาระดับน้ำตาลในเลือดด้วยเครื่องกลูโคมิเตอร์ วัดขนาดแผลและวิเคราะห์ด้วยโปรแกรม Image Pro Plus 6.1 วัดการไหลเวียนของเลือดบริเวณแผลด้วยเครื่องเลเซอร์ดอปเปลอร์โฟลมิเตอร์ ศึกษาการเกิดหลอดเลือดใหม่ด้วยกล้องจุลทรรศน์แบบคอนโฟคอลโดยใช้แสงฟลูออเรสเซ็นต์ ศึกษาการเกิด re-epithelialization ด้วยการย้อมฮีมาท้อกซิลินและอีโอซิน และวัดระดับ VEGF ที่แผลด้วยวิธี ELISA ผลการทดลองพบว่า ทั้งในวันที่ 7 และ 14 หลังทำให้เกิดแผล ค่าระดับน้ำตาลในเลือดของหนูลดลงอย่างมีนัยสำคัญทางสถิติหลังจากได้รับว่านหางจระเข้ กลุ่มที่ได้รับการรักษาด้วยการปลูกถ่ายเซลล์เอนโดทีเลียมโปรเจนนิเตอร์ร่วมกับการกินว่านหางจระเข้ มีการเพิ่มขึ้นของการปิดของแผล การไหลเวียนของเลือดบริเวณแผล การเกิดหลอดเลือดใหม่ การเกิด re-epithelialization และระดับ VEGF อย่างมีนัยสำคัญทางสถิติ (P<0.05) เมื่อเทียบกับกลุ่มเบาหวานที่ไม่ได้รับการรักษา นอกจากนี้ในวันที่ 14 กลุ่มที่ได้รับการรักษาร่วมกันมีการเพิ่มขึ้นของการไหลเวียนของเลือดบริเวณแผลและการเกิดหลอดเลือดใหม่อย่างมีนัยสำคัญทางสถิติ เมื่อเทียบกับกลุ่มที่ได้รับการรักษาด้วย EPCs หรือ Aloe เพียงอย่างเดียว ดังนั้นการศึกษานี้อาจเป็นประโยชน์และเป็นอีกทางเลือกหนึ่งในการรักษาแผลเบาหวานได้ในอนาคต
Can The Carbon And Nitrogen Isotope Values Of Offspring Be Used As A Proxy For Their Mother's Diet? Using Foetal Physiology To Interpret Bulk Tissue And Amino Acid Δ15N Values, Nico Lübcker, John P. Whiteman, Seth D. Newsome, Robert P. Millar, P.J. Nico De Bruyn
Can The Carbon And Nitrogen Isotope Values Of Offspring Be Used As A Proxy For Their Mother's Diet? Using Foetal Physiology To Interpret Bulk Tissue And Amino Acid Δ15N Values, Nico Lübcker, John P. Whiteman, Seth D. Newsome, Robert P. Millar, P.J. Nico De Bruyn
Biological Sciences Faculty Publications
The measurement of bulk tissue nitrogen (δ15N) and carbon isotope values (δ13C) chronologically along biologically inert tissues sampled from offspring can provide a longitudinal record of their mothers' foraging habits. This study tested the important assumption that mother-offspring stable isotope values are positively and linearly correlated. In addition, any change in the mother-offspring bulk tissues and individual amino acids that occurred during gestation was investigated. Whiskers sampled from southern elephant seal pups (Mirounga leonina) and temporally overlapping whiskers from their mothers were analyzed. This included n = 1895 chronologically subsampled whisker segments for bulk …
Structural Features Contributing To Methylenedioxypyrovalerone (Mdpv) Analog Inhibition Of The Human Dopamine Transporter, Zachary R. Spires
Structural Features Contributing To Methylenedioxypyrovalerone (Mdpv) Analog Inhibition Of The Human Dopamine Transporter, Zachary R. Spires
Theses and Dissertations
Monoamine transporters (MATs) are transmembrane neurotransmitter sodium symporters consisting of the dopamine, norepinephrine, and serotonin transporters: DAT, NET, and SERT, respectively. Following an action potential and neurotransmitter vesicular release, MAT-mediated reuptake of these neurotransmitters in the presynaptic membrane contributes to the termination of monoaminergic neurotransmission. MATs are the targets of many drugs providing therapeutic benefits or taken recreationally. One of these drugs is methylenedioxypyrovalerone (MDPV), an abused synthetic cathinone that is a high potency uptake inhibitor of the human DAT (hDAT). In contrast, MDPV is a low potency uptake inhibitor of the Drosophila melanogaster dopamine transporter (dDAT). The reasons for …