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Articles 211 - 223 of 223
Full-Text Articles in Diseases
The Role Of Inflammation In The Early Radiation Response, Christy Marie Wilson
The Role Of Inflammation In The Early Radiation Response, Christy Marie Wilson
Theses and Dissertations (ETD)
Radiation is one of the principal treatments for adults and children with brain tumors, and is one of the oldest established treatments for tumors of all types. Currently, the limiting factor for the use of radiation is the effect on normal tissue adjacent to the tumor. Toxicity, including early and late effects from radiation, limits the dose administered to the tumor and reduces the probability of cure. This work has three aims in its attempt to understand and limit early radiation damage: characterize the role of the inflammatory molecules tumor necrosis factor alpha (TNF) and intracellular adhesion molecule-1 (ICAM-1) in …
Feasibility Study Of Liquid-Based Cytology For Post-Treatment Surveillance Of Patients With Vulvar Intraepithelial Neoplasia, Wendy Likes
Theses and Dissertations (ETD)
Introduction: Colposcopy and tissue biopsy remain the gold standard for diagnosing vulvar intraepithelial neoplasia (VIN). Vulvar colposcopy is fairly nonspecific. As a result, many women undergo unwarranted painful biopsies. Vulvar cytology, which is relatively painless, inexpensive and allows a larger area to be sampled, may likely reduce false negative diagnoses. However, previous cytological studies that used conventional methodologies were largely unsuccessful in diagnosing VIN. In this study, liquid based cytology and HPV typing by PCR have been assessed as possible alternatives to biopsy for follow-up surveillance of women treated for VIN.
Methods: Women with a history of VIN and a …
The Combined Effect Of In-Situ Tumor And Irradiation On Peritumoral Brain Vasculature, Janice Ann Zawaski
The Combined Effect Of In-Situ Tumor And Irradiation On Peritumoral Brain Vasculature, Janice Ann Zawaski
Theses and Dissertations (ETD)
In the USA, 200,000 brain tumors are diagnosed each year with glioma representing 8.4% of the 200,000. The standard treatment for glioma consists of surgical resection, when possible, followed by radiation therapy (RT) and/or chemotherapy. Radiation therapy is one of the most effective treatments of brain tumors; however, the therapeutic ratio of RT is limited by damage to the normal tissue. We hypothesize that tumor growth has an adverse effect on the peritumoral tissue through the angiogenic/inflammatory environment it creates rendering it susceptible to further damage by RT which may be prevented by using anti-angiogenic/anti-inflammatory agents. We have developed a …
Mathematical Aids Epidemic Model: Preferential Anti-Retroviral Therapy Distribution In Resource Constrained Countries, Nadia Abuelezam
Mathematical Aids Epidemic Model: Preferential Anti-Retroviral Therapy Distribution In Resource Constrained Countries, Nadia Abuelezam
HMC Senior Theses
HIV/AIDS is one of the largest health problems the world is currently facing. Even with anti-retroviral therapies (ART), many resource-constrained countries are unable to meet the treatment needs of their infected populations. ART-distribution methods need to be created that prevent the largest number of future HIV infections. We have developed a compartment model that tracks the spread of HIV in multiple two-sex populations over time in the presence of limited treatment. The model has been fit to represent the HIV epidemic in rural and urban areas in Uganda. With the model we examine the spread of HIV among urban and …
Cystic Fibrosis: Biological And Ethical Considerations, Sarah Elizabeth Milam
Cystic Fibrosis: Biological And Ethical Considerations, Sarah Elizabeth Milam
Honors Theses
Cystic fibrosis (CF) is a progressive, multisystem disease whose etiology is a genetic mutation in the CF gene product, cystic fibrosis transmembrane conductance regulator (CFTR). The disorder affects all exocrine glands, with common symptoms involving the lungs and pancreas. Although the CF gene and its protein product have been identified, two aspects of the disease make CF particularly difficult to diagnose and manage: (a) variability in both degree and pattern of the mutation in different individuals and (b) lack of information regarding the precise molecular and cellular mechanisms responsible. Let us begin by examining the pathogenesis and pathophysiology of the …
Methicillin Resistant Staphylococcus Aureus (Mrsa): Molecular Detection And Dna Fingerprinting, Leslie Cotter
Methicillin Resistant Staphylococcus Aureus (Mrsa): Molecular Detection And Dna Fingerprinting, Leslie Cotter
Theses
Throughout the 1990s, the incidence of methicillin-resistant Staphylococcus aureus has increased in many health care areas including acute and chronic care facilities, outpatient clinics and in the community. Once introduced into a health care environment, this nosocomial pathogen can spread rapidly and as MRSA are resistant to multiple antibiotics, treatment is often difficult. Therefore effective infection control measures are required to prevent cross-infection and further spread of endemic strains.
In this study, a sensitive and specific triplex-PCR assay was designed for MRSA detection, wherein three genes, the methicillin resistance gene (mecA). femA and the extracellular thermonuclease gene (rmc) were simultaneously …
Job Accommodation In The Automobile Industry : Addressing The Problem Of Lateral Epicondylitis, Thanigaivel Ashwin Raj
Job Accommodation In The Automobile Industry : Addressing The Problem Of Lateral Epicondylitis, Thanigaivel Ashwin Raj
Theses and Dissertations (ETD)
Cumulative trauma disorders are musculoskeletal problems such as carpal tunnel syndrome, rotator cuff tendinitis, and epicondylitis which can affect assembly line workers. The injuries are thought to result from repetitive motions performed under excessive loads in anomalous postures. The project aimed to design, build, install, and evaluate worksite accommodation at the Saturn plant for a worker with right lateral epicondylitis. The goal was to make her fully functional in her original team which required addressing the injurious aspects of the task that caused or aggravated her injury.
A process of observation, interview, and analysis identified “the door mount” operation on …
A Rapid Concentration And Identification Technique For Human Malaria Infections Using A Mouse Model, Donald D. Barton
A Rapid Concentration And Identification Technique For Human Malaria Infections Using A Mouse Model, Donald D. Barton
Loma Linda University Electronic Theses, Dissertations & Projects
Red blood cells infected with malaria parasites experience a change in density making them lighter (less dense). This paper reports a new, rapid diagnostic technique using this change in density in the infected red blood cell. It is not only easy to use, but it is also compatible with the technological conditions found where the malaria problem is most acute - in many developing countries of the world. A small sample of blood drawn from a simple finger stick can be concentrated and examined microscopically for malaria parasites within 10 minutes. The thick film slide preparation, presently used, takes a …
The Cardiovascular Effects Of Human Contact With Coronary Artery Disease Patients In The Coronary Care Unit, Margaret A. Palmour
The Cardiovascular Effects Of Human Contact With Coronary Artery Disease Patients In The Coronary Care Unit, Margaret A. Palmour
Loma Linda University Electronic Theses, Dissertations & Projects
Ten coronary artery disease patients were selected using purposive method of sampling and observed for six hours. It was postulated that 1) Human contact with coronary artery disease patients in the coronary intensive care unit would be associated with significant (p = 0.05) changes in the electrocardiogram such as: (a) increased heart rate more than 10 per cent, (b) changed atrio-ventricular conduction more than 10 per cent, (c) changed ST segment one millimeter or more and (d) increased frequency of ectopic beats more than 10 per cent. 2) The degree of stress and cardiac response was related to a number …
A Clinical And Microscopic Evaluation Of Plaque Removal And By The Hydrodent Brush, Soertini E. Lambri
A Clinical And Microscopic Evaluation Of Plaque Removal And By The Hydrodent Brush, Soertini E. Lambri
Loma Linda University Electronic Theses, Dissertations & Projects
The Hydrodent toothbrush was compared to conventional toothbrush (Lactona # 19) in its effectiveness on removing the plaque, eliminating the pocket depth, and improving the gingival tissue condition.
Forty six male and female subjects with the age range of 18 to 50 years old participated in a 5 month study with 4 week intervals. Each subject received a Hydrodent brush of soft, medium, and hard textures and a conventional toothbrush. The toothbrushes were given randomly and the subject served as his own control.
Clinical and histological evaluations were made after the use of each toothbrush. The clinical evaluation showed some …
Relationship Of Ventilation Ability And Positioning In Left-Sided Congestive Heart Failure Patients, Nancy E. Carson
Relationship Of Ventilation Ability And Positioning In Left-Sided Congestive Heart Failure Patients, Nancy E. Carson
Loma Linda University Electronic Theses, Dissertations & Projects
Proper positioning is used to relieve dyspnea, edema, and fatigue in congestive heart failure patients. According to the review of literature, improved ventilation as measured by specific lung volumes and lung mechanics occurred with upright positioning in normal persons. The effects of specific changes in lung volumes related to position change in congestive heart failure patients has not been documented in literature, although various recommendations related to positioning are made. This exploratory study was undertaken with nine congestive heart failure patients to see if a relationship existed between degree of head elevation and lung ventilation ability as measured by water-bell …
Periodontal Pocket Reduction Following Gingival Curettage, Robert B. Tandy
Periodontal Pocket Reduction Following Gingival Curettage, Robert B. Tandy
Loma Linda University Electronic Theses, Dissertations & Projects
The purpose of this study was to evaluate pocket reduction following gingival curettage. The effects of temporary pressure packing, inflammation, oral hygiene, pocket depth, age and sex of the patient were evaluated.
Three hundred twenty-eight periodontal pockets were studied in forty-one adult patients selected with interdental lesions ranging from 3.0 - 7.5 mm. in depth. Pocket depth and gingival height were measured preoperatively, one month postoperatively and two months postoperatively. The mean change in pocket depth and gingival height was calculated and statistical significance was determined for all measurements.
The results show that after a two-month postoperative evaluation following gingival …
Antibiotics And The Wasting Disease In Neonatally Thymectomized Rats, Douglas M. Grignon
Antibiotics And The Wasting Disease In Neonatally Thymectomized Rats, Douglas M. Grignon
Loma Linda University Electronic Theses, Dissertations & Projects
The administration of the antibiotic, Chloramphenicol, to pregnant rats just prior to, and for four days after delivery, diminishes the incidence of the so-called "Wasting Disease" in neonatally thymectomized rats.
A total of 50 rats were divided into the following groups:
- Thymectomy only---nonmedicated 17 rats
- Thymectomy only---medicated 12 rats
- Thymectomy-adrenalectomy---nonmedicated 5 rats
- Thymectomy-adrenalectomy---medicated 8 rats
- Controls---nonmedicated 4 rats
- Controls---medicated 4 rats
Chloramphenicol was administered in the drinking water to the mothers of groups 2, 4 and 6 for about 2 days prior to delivery and 4 days after. On the day of birth or within three days after birth, the …