Matching Items (10)
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Description
The objective of this research is to develop a biocompatible scaffold based on dextran and poly acrylic acid (PAA) with the potential to be used for soft tissue repair. In this thesis, physical and chemical properties of the scaffold were investigated. The scaffolds were made using electrospinning and cross-linked under

The objective of this research is to develop a biocompatible scaffold based on dextran and poly acrylic acid (PAA) with the potential to be used for soft tissue repair. In this thesis, physical and chemical properties of the scaffold were investigated. The scaffolds were made using electrospinning and cross-linked under high temperature. After heat treatment, Scanning Electron Microscope (SEM) was used to observe the structures of these scaffolds. Fourier transform infrared spectroscopy (FTIR) was used to measure the cross-linking level of scaffold samples given different times of heat treatment by detecting and comparing the newly formed ester bonds. Single-walled carbon nanotubes (SWCNT) were added to enhance the mechanical properties of dextran-PAA scaffolds. Attachment of NIH-3T3 fibroblast cells to the scaffold and the response upon implantation into rabbit vaginal tissue were also evaluated to investigate the performance of SWCNT dextran-PAA scaffold. SEM was then used to characterize morphology of fibroblast cells and rabbit tissues. The results suggest that SWCNT could enhance cell attachment, distribution and spreading performance of dextran-PAA scaffold.
ContributorsLiu, Chongji (Author) / Massia, Stephen (Thesis advisor) / Pizziconi, Vincent (Committee member) / Pauken, Christine (Committee member) / Arizona State University (Publisher)
Created2014
Description

Pelvic organ prolapse (POP) is a condition involving the weakening of the pelvic floor, with a prevalence of up to 50% of women experiencing the condition to some degree. Individuals with the condition are susceptible to multiple symptoms include vaginal protrusion, dyspareunia, and difficulties with waste excretion. Risk factors are

Pelvic organ prolapse (POP) is a condition involving the weakening of the pelvic floor, with a prevalence of up to 50% of women experiencing the condition to some degree. Individuals with the condition are susceptible to multiple symptoms include vaginal protrusion, dyspareunia, and difficulties with waste excretion. Risk factors are common and numerous for POP, and the economic burden of the condition poses a significant cost to nations worldwide. For many years, the primary solution to POP was the usage of transvaginal meshes, often composed of polypropylene, but rising reports of harmful side effects have led to their recall. Due to this, the space is open for novel solutions, and treatments based in regenerative medicine are on the rise. One such potential treatment is the usage of functionalized polyvinyl alcohol scaffolds to support the regeneration and strengthening of the pelvic floor. To validate the usage of this scaffold, this study focuses on the biocompatibility of the scaffolds, with specific focus on the maintenance of cell viability and proliferation on the scaffold. Through usage of metabolic assays and fluorescence microscopy, scaffolds composed of functional polyvinyl alcohol with cellulose have shown promise in supporting the cell types necessary for reconstructing the pelvic floor.

ContributorsHaug, Joel (Author) / Song, Kenan (Thesis director) / Lancaster, Jessica (Committee member) / Barrett, The Honors College (Contributor) / Department of Psychology (Contributor) / Harrington Bioengineering Program (Contributor)
Created2023-05
Description
Pelvic organ prolapse (POP) is a condition involving the weakening of the pelvic floor, with a prevalence of up to 50% of women experiencing the condition to some degree. Individuals with the condition are susceptible to multiple symptoms include vaginal protrusion, dyspareunia, and difficulties with waste excretion. Risk factors are

Pelvic organ prolapse (POP) is a condition involving the weakening of the pelvic floor, with a prevalence of up to 50% of women experiencing the condition to some degree. Individuals with the condition are susceptible to multiple symptoms include vaginal protrusion, dyspareunia, and difficulties with waste excretion. Risk factors are common and numerous for POP, and the economic burden of the condition poses a significant cost to nations worldwide. For many years, the primary solution to POP was the usage of transvaginal meshes, often composed of polypropylene, but rising reports of harmful side effects have led to their recall. Due to this, the space is open for novel solutions, and treatments based in regenerative medicine are on the rise. One such potential treatment is the usage of functionalized polyvinyl alcohol scaffolds to support the regeneration and strengthening of the pelvic floor. To validate the usage of this scaffold, this study focuses on the biocompatibility of the scaffolds, with specific focus on the maintenance of cell viability and proliferation on the scaffold. Through usage of metabolic assays and fluorescence microscopy, scaffolds composed of functional polyvinyl alcohol with cellulose have shown promise in supporting the cell types necessary for reconstructing the pelvic floor.
ContributorsHaug, Joel (Author) / Song, Kenan (Thesis director) / Lancaster, Jessica (Committee member) / Barrett, The Honors College (Contributor) / Department of Psychology (Contributor) / Harrington Bioengineering Program (Contributor)
Created2023-05
Description
Pelvic organ prolapse (POP) is a condition involving the weakening of the pelvic floor, with a prevalence of up to 50% of women experiencing the condition to some degree. Individuals with the condition are susceptible to multiple symptoms include vaginal protrusion, dyspareunia, and difficulties with waste excretion. Risk factors are

Pelvic organ prolapse (POP) is a condition involving the weakening of the pelvic floor, with a prevalence of up to 50% of women experiencing the condition to some degree. Individuals with the condition are susceptible to multiple symptoms include vaginal protrusion, dyspareunia, and difficulties with waste excretion. Risk factors are common and numerous for POP, and the economic burden of the condition poses a significant cost to nations worldwide. For many years, the primary solution to POP was the usage of transvaginal meshes, often composed of polypropylene, but rising reports of harmful side effects have led to their recall. Due to this, the space is open for novel solutions, and treatments based in regenerative medicine are on the rise. One such potential treatment is the usage of functionalized polyvinyl alcohol scaffolds to support the regeneration and strengthening of the pelvic floor. To validate the usage of this scaffold, this study focuses on the biocompatibility of the scaffolds, with specific focus on the maintenance of cell viability and proliferation on the scaffold. Through usage of metabolic assays and fluorescence microscopy, scaffolds composed of functional polyvinyl alcohol with cellulose have shown promise in supporting the cell types necessary for reconstructing the pelvic floor.
ContributorsHaug, Joel (Author) / Song, Kenan (Thesis director) / Lancaster, Jessica (Committee member) / Barrett, The Honors College (Contributor) / Department of Psychology (Contributor) / Harrington Bioengineering Program (Contributor)
Created2023-05
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Description

Hans Peter Dietz and Judy Simpson published, “Levator Trauma is Associated with Pelvic Organ Prolapse,” in the journal BJOG: An International Journal of Obstetrics and Gynecology in 2008. In their article, Dietz and Simpson estimated the risk of pelvic organ prolapse in women who attained injuries to the pelvic levator

Hans Peter Dietz and Judy Simpson published, “Levator Trauma is Associated with Pelvic Organ Prolapse,” in the journal BJOG: An International Journal of Obstetrics and Gynecology in 2008. In their article, Dietz and Simpson estimated the risk of pelvic organ prolapse in women who attained injuries to the pelvic levator muscles. The levator muscles, also known as the levator ani, are a major muscle group that comprise the pelvic floor. Along with other muscles, the pelvic floor supports organs in a woman’s pelvis, such as the bladder, uterus, and rectum. Vaginal childbirth can cause a weakening of the pelvic muscles. That can lead to pelvic organ prolapse, which results in the descent of the pelvic organs towards a woman’s vaginal opening. In, “Levator Trauma is Associated with Pelvic Organ Prolapse,” Dietz and Simpson found that women were more likely to have pelvic organ prolapse if they had levator trauma, and called for further research to understand the relationship between levator ani trauma and pelvic organ prolapse.

Created2021-02-18
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In 1997, physicians and researchers Ambre Olsen, Virginia Smith, John Bergstrom, Joyce Colling, and Amanda Clark published, “Epidemiology of Surgically Managed Pelvic Organ Prolapse and Urinary Incontinence,” in the journal Obstetrics and Gynecology. In their article, the authors retrospectively analyzed data from patients who underwent surgery for pelvic organ prolapse

In 1997, physicians and researchers Ambre Olsen, Virginia Smith, John Bergstrom, Joyce Colling, and Amanda Clark published, “Epidemiology of Surgically Managed Pelvic Organ Prolapse and Urinary Incontinence,” in the journal Obstetrics and Gynecology. In their article, the authors retrospectively analyzed data from patients who underwent surgery for pelvic organ prolapse or urinary incontinence two years prior in 1995. Often due to a weakening of or damage to their pelvic muscles, women with pelvic organ prolapse can experience a descent of pelvic organs into the lower pelvis and vagina. People with urinary incontinence can experience bladder control issues and urinary leaks. According to the authors, an estimated fifty percent of women who have previously given birth have had a prolapse. In their article, Olsen and colleagues analyze factors such as race, age, and weight in women who had surgery to treat pelvic organ prolapse and ultimately advocate for a standard assessment for the severity of those conditions.

Created2021-02-23
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In 1996, a team of researchers associated with the International Continence Society published “The Standardization of Terminology of Female Pelvic Organ Prolapse and Pelvic Floor Dysfunction” in American Journal of Obstetrics and Gynecology. Pelvic organ prolapse is characterized by the descent of the pelvic organs into the lower portion of

In 1996, a team of researchers associated with the International Continence Society published “The Standardization of Terminology of Female Pelvic Organ Prolapse and Pelvic Floor Dysfunction” in American Journal of Obstetrics and Gynecology. Pelvic organ prolapse is characterized by the descent of the pelvic organs into the lower portion of the pelvis and is often caused by a weakening of the muscles and ligaments that normally hold the organs in place. The authors concluded that physicians and researchers needed to develop a system of standardized terms to use to describe the anatomical position of pelvic organ prolapse in women. They propose using terms that emphasize the location of the prolapse rather than just the involved organ. They also suggest that the system utilizes a series of examinations and imaging to uniformly describe and quantify pelvic organ prolapse. The article by Bump and colleagues was one of the first to call for a standardized system using specific terms to communicate findings about pelvic organ prolapse systematically across clinical and academic research settings.

Created2021-03-10
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Description

In 2007, physicians John Jelovsek, Christopher Maher, and Matthew Barber published, “Pelvic Organ Prolapse,” in The Lancet. In their article, Jelovsek and colleagues provided an overview of pelvic organ prolapse in women and described the epidemiology, risk factors, symptoms, and management of the condition. Pelvic organ prolapse occurs when a

In 2007, physicians John Jelovsek, Christopher Maher, and Matthew Barber published, “Pelvic Organ Prolapse,” in The Lancet. In their article, Jelovsek and colleagues provided an overview of pelvic organ prolapse in women and described the epidemiology, risk factors, symptoms, and management of the condition. Pelvic organ prolapse occurs when a woman’s pelvic floor is weakened or damaged from stress or trauma such as vaginal childbirth. The pelvic floor is a group of muscles that provides support to organs within the lower abdominal region of the body, including the bladder, uterus, and rectum. Disorders of the pelvic floor disrupt its normal function, often causing a feeling of uncomfortable pressure or pain, and incontinence, which is involuntary leakage of urine or feces. In their article, Jelovsek and colleagues reviewed the known information about pelvic organ prolapse as of 2007 and research teams who further studied the causes and management of pelvic organ prolapse in women later used the article as a reference.

Created2021-03-16
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Description

Pelvic organ prolapse is a common condition in women that causes the pelvic organs to descend, often resulting from a weakened pelvic floor. Pelvic organs supported by the pelvic floor, such as the bladder, bowel, or uterus, can descend to such a degree that they project out from a woman’s

Pelvic organ prolapse is a common condition in women that causes the pelvic organs to descend, often resulting from a weakened pelvic floor. Pelvic organs supported by the pelvic floor, such as the bladder, bowel, or uterus, can descend to such a degree that they project out from a woman’s body typically via the vagina. Pelvic floor stress or trauma, like vaginal childbirth, can cause pelvic organ prolapse. Women with pelvic organ prolapse also often experience other conditions, such as incontinence or the involuntary leakage of urine or fecal matter. As a result, while many women experience pressure or fullness from the prolapse itself, other common symptoms of pelvic organ prolapse are those involving the bladder or the bowel. Treatments for prolapse depend on the woman’s symptoms, and include pessaries, surgery, and pelvic floor exercises. As of 2021, researchers and physicians continue to study pelvic organ prolapse to determine how different treatments can be tailored to specific causes or symptoms.

Created2021-03-24
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Description

In 2011, Cristian Persu, Christopher Chapple, Victor Cauni, Stefan Gutue, and Petrisor Geavlete published “Pelvic Organ Prolapse Quantification System (POP-Q) – A New Era in Pelvic Prolapse Staging,” in the Journal of Medicine and Life. In their article, the authors explain the need for a reliable diagnostic method for describing

In 2011, Cristian Persu, Christopher Chapple, Victor Cauni, Stefan Gutue, and Petrisor Geavlete published “Pelvic Organ Prolapse Quantification System (POP-Q) – A New Era in Pelvic Prolapse Staging,” in the Journal of Medicine and Life. In their article, the authors explain the need for a reliable diagnostic method for describing the state of a pelvic organ prolapse, or a condition that can result from weakness or damage to the muscles that support the pelvic organs, sometimes leading to bladder, bowel, and sexual dysfunction. Persu and colleagues describe a previous diagnostic method, the Baden-Walker Halfway Scoring System, comparing it to the newer system, the Pelvic Organ Prolapse Quantification System, referred to also as POP-Q. By examining the benefits and drawbacks of each pelvic organ prolapse measurement and diagnostic system, the authors proposed a universal acceptance of the POP-Q system, based on its accuracy and reliability.

Created2020-10-27