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Ua35/11 Student Honors Research Bulletin, Wku Honors Program Jan 1996

Ua35/11 Student Honors Research Bulletin, Wku Honors Program

WKU Administration Documents

The WKU Student Honors Research Bulletin is dedicated to scholarly involvement and student research. These papers are representative of work done by students from throughout the university.

  • Brooks, Lynnette and Cindy Calisi. The Effect of Selenium Supplementation on the Immune Response of Mice with Experimental Chagas' Disease
  • Hildreth, John. Teasing the Muse
  • Jenkins, Rhonda. Steinbeck's Portraits of Prostitutes: Progression of an Author's Vision
  • Kirkham, Michelle. The Prenatal Use of Crack Cocaine: How It Affects Children and How Schools Can Respond
  • Gibson, Jeanette and Juli McCay. Circadian Rhythm of Brain GABA Levels in the Cockroach, Leucophaea Maderae
  • Patterson, Dana. Home Schooling …


Analysis Of The Effects Of Overexpression Of Metallothionein-I In Transgenic Mice On The Reproductive Toxicology Of Cadmium., T Dalton, Kai Fu, G C Enders, R D Palmiter, G K Andrews Jan 1996

Analysis Of The Effects Of Overexpression Of Metallothionein-I In Transgenic Mice On The Reproductive Toxicology Of Cadmium., T Dalton, Kai Fu, G C Enders, R D Palmiter, G K Andrews

Journal Articles: Pathology and Microbiology

Exposure to low levels of cadmium reduces fertility. In male mice spermatogenesis is highly sensitive to cadmium, whereas in females the peri-implantation period of pregnancy is sensitive. To examine the potential roles of the cadmium-binding protein, metallothionein (MT), in the reproductive toxicology of cadmium, we examined a transgenic mouse strain that overexpresses metallothionein-I (MT-I). These mice had dramatically increased steady-state levels of MT-I mRNA and MT in the testes and in the female reproductive tract during the peri-implantation period of pregnancy, and this overexpression occurred in a cell-specific and temporally regulated manner similar to that of the endogenous MT-I gene. …


Site-Specific (Local) Delivery Of Antibiotics From Biodegradable Gms Based Implants For The Prevention Of Post-Operative Wound Infections, Saleh Allababidi Jan 1996

Site-Specific (Local) Delivery Of Antibiotics From Biodegradable Gms Based Implants For The Prevention Of Post-Operative Wound Infections, Saleh Allababidi

MUSC Theses and Dissertations

Systemic administration of prophylactic antibiotics has been reported to significantly decrease, but not eliminate postoperative infections mainly due to the failure in achieving adequate levels of antibiotics at the surgical wound. The local administration guarantees the delivery of adequate levels of antibiotics and is therefore advantageous as a prophylactic measure. Hence, the overall objective of this study was to develop a glyceryl monostearate (GMS) based biocompatible, bioerodible system to provide short term (1-3 days) local delivery of antibiotics. GMS based matrices were prepared by direct compression. Erosion enhancers were incorporated into the GMS matrix to facilitate the bioerosion and bioabsorption …


American Longevity: Past, Present, And Future, Samuel H. Preston Jan 1996

American Longevity: Past, Present, And Future, Samuel H. Preston

Center for Policy Research

How long we live, and how long members of our families and social groups live, is extraordinarily important to us. It's not a subject of daily discussion, but it would be if we were threatened with a return to earlier conditions. Unfortunately, the subject of longevity falls between the cracks of academe and has received far less attention than it warrants. We are all aware, at least dimly, that people are living longer than they used to. The numbers are impressive: at the turn of the century, life expectancy at birth in the United States was 48 years; it's now …


Nutritional Problems And Information Needs Of Patients Receiving Chemotherapy And Radiation Therapy, Margaret Joan Robinson Jan 1996

Nutritional Problems And Information Needs Of Patients Receiving Chemotherapy And Radiation Therapy, Margaret Joan Robinson

Theses : Honours

Nutritional status is a major factor in determining the successful outcome of treatment for cancer. The combined effect of cancer, and the treatment for cancer, has the potential to severely impair nutritional status. The purpose of this study was to investigate the incidence and severity of treatment-related side-effects which affect nutritional status in cancer patients and to determine the sources and helpfulness of information about nutrition which had been utilised by patients. A descriptive study was used to investigate two groups of patients, one group who was receiving chemotherapy, and the other, radiation therapy. A questionnaire developed by the researcher …


Numerical Chromosome Abnormalities In Sperm From Oligoasthenoteratozoospermic Patients And Fertile Males, Myung-Geol Pang Jan 1996

Numerical Chromosome Abnormalities In Sperm From Oligoasthenoteratozoospermic Patients And Fertile Males, Myung-Geol Pang

Theses and Dissertations in Biomedical Sciences

Artificial fertilization protocols have been developed which bypass natural barriers for reproduction. One aspect of infertility which has received little attention is the potential importance of aneuploidy in sperm. To more clearly understand the cytogenetic make-up of sperm from OAT patients, multi-probe, multi-color FISH was performed to determine aneuploidy.

The introduction of intracytoplasmic sperm injection (ICSI) has revolutionized protocols used in in vitro fertilization centers. The pregnancies resulting from ICSI suggest an increased frequency of sex chromosome aneuploidy in livebirths. Preliminary data by others' suggest that sperm tail swelling patterns following hypo-osmotic swelling (HOST) can be predictive of fertilizing ability. …


Stimulation Of Alpha 1(I) Procollagen Gene Expression In Nih-3t3 Cells By The Human T Cell Leukemia Virus Type 1 (Htlv-1) Tax Gene., E. Munoz, D. Suri, S. Amini, K. Khalili, Sergio A. Jimenez Nov 1995

Stimulation Of Alpha 1(I) Procollagen Gene Expression In Nih-3t3 Cells By The Human T Cell Leukemia Virus Type 1 (Htlv-1) Tax Gene., E. Munoz, D. Suri, S. Amini, K. Khalili, Sergio A. Jimenez

Selected Works of Sergio Jiménez, MD, MACR

The mechanisms that regulate the expression of genes encoding extracellular matrix proteins in fibroblasts and other mesenchymal cells have remained elusive. Studies from several laboratories have indicated that Tax, a trans-regulatory protein from the human T cell leukemia virus type I not only augments viral gene expression but also triggers the expression of various cellular genes. Here, we examined the hypothesis that the expression of collagen genes may also be modulated by Tax. NIH-3T3 cells were simultaneously transfected with a Tax expressor plasmid and a chimeric construct containing regulatory sequences (-804 to +42 bp) of the alpha 1(I) procollagen gene …


Digest Of The Philadelphia College Of Osteopathic Medicine (Fall 1995), Philadelphia College Of Osteopathic Medicine Oct 1995

Digest Of The Philadelphia College Of Osteopathic Medicine (Fall 1995), Philadelphia College Of Osteopathic Medicine

Digest

The Fall 1995 issue of the Digest of the Philadelphia College of Osteopathic Medicine includes the following articles:

  • PCOM Begins New Era of Research Development
  • Alumni Board Profile
  • College Board Profile
  • PCOM Makes a Splash at Fall Conventions
  • Annual Report 1995
  • Foundations for Leadership
  • Academic Update
  • The PCOM Mission
  • Master Facilities Plan
  • PCOM Financial Review
  • PCOM Board of Trustees
  • Students Get Involved
  • PCOM Tees off for Cambria Street Healthcare Center
  • PCOM’s Ever-changing Campus
  • A Call for Action in Pennsylvania
  • Morris Named Family Medicine Chairman
  • Ambulatory Care Network Expands
  • Capital Campaign Developments
  • Class Acts
  • In Memoriam
  • PCOM Mail Order Catalog


Expression Of Genes Encoding Antioxidant Enzymes In Preimplantation Mouse And Cow Embryos And Primary Bovine Oviduct Cultures Employed For Embryo Coculture., M B Harvey, M Y Arcellana-Panlilio, X Zhang, G A Schultz, A J Watson Sep 1995

Expression Of Genes Encoding Antioxidant Enzymes In Preimplantation Mouse And Cow Embryos And Primary Bovine Oviduct Cultures Employed For Embryo Coculture., M B Harvey, M Y Arcellana-Panlilio, X Zhang, G A Schultz, A J Watson

Obstetrics & Gynaecology Publications

Preimplantation embryos from a variety of mammalian species contrast markedly in their response to culture in vitro. Murine preimplantation embryos display a wider tolerance than other mammalian species to culture environments, and this has contributed to the development of several effective defined culture media. Embryo coculture on somatic cells remains the most effective method of supporting reasonable rates of bovine preimplantation development in vitro. The patterns of gene expression for several antioxidant enzymes during preimplantation murine and bovine development were examined by use of the reverse transcription-polymerase chain reaction technique to determine whether the differential developmental capacity of mammalian preimplantation …


Astrocytes Derived From P53-Deficient Mice Provide A Multistep In Vitro Model For Development Of Malignant Gliomas., Alan M. Yahanda Md, Facs, J M Bruner, L A Donehower, R S Morrison Aug 1995

Astrocytes Derived From P53-Deficient Mice Provide A Multistep In Vitro Model For Development Of Malignant Gliomas., Alan M. Yahanda Md, Facs, J M Bruner, L A Donehower, R S Morrison

PCI Publications and Projects

Loss or mutation of p53 is thought to be an early event in the malignant transformation of many human astrocytic tumors. To better understand the role of p53 in their growth and transformation, we developed a model employing cultured neonatal astrocytes derived from mice deficient in one (p53 +/-) or both (p53 -/-) p53 alleles, comparing them with wild-type (p53 +/+) cells. Studies of in vitro and in vivo growth and transformation were performed, and flow cytometry and karyotyping were used to correlate changes in growth with genomic instability. Early-passage (EP) p53 -/- astrocytes achieved higher saturation densities and had …


Method For Inhibiting Angiogenesis With Aurintricarboxylic Acid, Its Analogues Or Salts, Delwood C. Collins, Antonio Gagliardi, Anjan Bhattacharyya Jul 1995

Method For Inhibiting Angiogenesis With Aurintricarboxylic Acid, Its Analogues Or Salts, Delwood C. Collins, Antonio Gagliardi, Anjan Bhattacharyya

Obstetrics and Genecology Faculty Patents

Aurintricarboxylic acid has potent anti-angiogenic activity and may be used for new therapeutic approaches for diseases of neovascularization including the treatment of solid tumors, diabetic retinopathy and arthritis, among others.


Identification And Characterization Of Mitochondrial Dna Variants In Alzheimer's Disease, Natasha Singh Hamblet Jul 1995

Identification And Characterization Of Mitochondrial Dna Variants In Alzheimer's Disease, Natasha Singh Hamblet

Theses and Dissertations in Biomedical Sciences

Alzheimer's Disease (AD) is a complex neurodegenerative disorder that affects a significant portion of the human population regardless of ethnicity or gender. A mitochondrial hypothesis of AD has been proposed based on a number of studies which establish altered oxidative phosphorylation (OXPHOS) and ATP synthesis in AD tissue. ATP demand is most prevalent in the brain; damage to OXPHOS could severely impair brain metabolism, thereby leading to a decline in cognitive function. Four out of five complexes in the OXPHOS pathway are partly encoded by mitochondrial DNA (mtDNA); thus, this may be a crucial site of lesions that alter brain …


Immune Response To The Carcinoembryonic Antigen In Patients Treated With An Anti-Idiotype Antibody Vaccine, Kenneth A. Foon, Mala Chakraborty, William J. John, Amanda Sherratt, Heinz Köhler, Malaya Bhattacharya-Chatterjee Jul 1995

Immune Response To The Carcinoembryonic Antigen In Patients Treated With An Anti-Idiotype Antibody Vaccine, Kenneth A. Foon, Mala Chakraborty, William J. John, Amanda Sherratt, Heinz Köhler, Malaya Bhattacharya-Chatterjee

Markey Cancer Center Faculty Publications

We have generated an IgG1 murine monoclonal anti-idiotype antibody (Ab2) designated 3H1, which mimics a specific epitope on the carcinoembryonic antigen (CEA). Patients with CEA positive tumors are immunologically "tolerant" to CEA. We used 3H1 as a surrogate for CEA for vaccine therapy of 12 patients with advanced colorectal cancer. Each of the patients received a minimum of four intracutaneous injections of aluminum hydroxide precipitated 3H1 at either 1, 2, or 4 mg dosage per injection. 9 of 12 patients demonstrated anti-anti-idiotypic (Ab3) response to 3H1. All nine patients generated specific anti-CEA antibody demonstrated by reactivity with radiolabeled purified CEA; …


The Rat Tram Flap: A Human Analogue?, Geoffrey G. Hallock Md Jul 1995

The Rat Tram Flap: A Human Analogue?, Geoffrey G. Hallock Md

Department of Surgery

No abstract provided.


Department Of Radiology-Annual Report-July 1, 1994 To June 30, 1995, David C. Levin Jun 1995

Department Of Radiology-Annual Report-July 1, 1994 To June 30, 1995, David C. Levin

Department of Radiology Administrative Documents and Reports

Department of Radiology Annual Report, July 1, 1994 to June 30, 1995. Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, United States. 120 pages.


A Model Of Cytomegalovirus Association With The Development Of Heart Graft Atherosclerosis, Evan Skowronski Jun 1995

A Model Of Cytomegalovirus Association With The Development Of Heart Graft Atherosclerosis, Evan Skowronski

Loma Linda University Electronic Theses, Dissertations & Projects

The development of graft atherosclerosis in heart transplant recipients has been associated with the development of post-transplant cytomegalovirus infection. The mechanism of this involvement, however, remains unclear. I undertook a study to determine the role of cytomegalovirus in the development of graft atherosclerosis. First, a rapid method of detecting cytomegalovirus based on capillary polymerase chain reaction and gel electrophoresis was employed to determine the presence of cytomegalovirus in a wide variety of clinical samples. Detection of cytomegalovirus is a lengthy procedure under normal conditions, and timely detection of cytomegalovirus in transplant recipients may allow intervention early enough to block the …


Ciprofloxacin In Multi-Resistant Infections In Childhood: An Audit, D M. Khan, Z A. Bhutta Jun 1995

Ciprofloxacin In Multi-Resistant Infections In Childhood: An Audit, D M. Khan, Z A. Bhutta

Department of Paediatrics and Child Health

Ciprofloxacin is a new orally administrable fluoroquinolones, with considerable efficacy against multiresistant organisms. Its use in the paediatric age group however, is controversial because of the risk of potential articular toxicity. We retrospectively reviewed ciprofloxacin usage over a 32 week periods (June, 1991-September, 1993) in paediatric inpatients at The Aga Khan University Hospital. Ciprofloxacin was used in 21 cases, singly in 11 (52%) and in combination with other antibiotics in a further 10 (48%). The response to therapy was adjudged as 'good' or 'fair' in 13 (62%) cases. Ciprofloxacin was the only sensitive antibiotic in 4 (19%) and resistance to …


Persistent Oral Dyskinesias Induced By Long-Term Haloperidol Treatment Is Dissociated From Changes In Neostriatal B(Max) And Mrna Content For Dopamine D(2) Receptors, Nuoyu Huang May 1995

Persistent Oral Dyskinesias Induced By Long-Term Haloperidol Treatment Is Dissociated From Changes In Neostriatal B(Max) And Mrna Content For Dopamine D(2) Receptors, Nuoyu Huang

Electronic Theses and Dissertations

Due to the presumed associations of dopamine (DA) receptor supersensitivity phenomena in both long-term neuroleptic-treated tardive dyskinetic rats and neonatal 6-hydroxydopamine (n6-OHDA)-lesioned rats, we studied the influence of haloperidol on n6-OHDA-lesioned rats. At 3 days after birth rats received 6-OHDA-HBr (200 $\mu$g, bilateral intracerebroventricularly; desipramine pretreatment, 20 mg/kg, 1h) or vehicle. Two months later haloperidol (1.5/kg/day $\times$ 2 days/week for 4 weeks, then 1.5 mg/kg/day, every day for 10 months) was added to the drinking water. Spontaneous oral activity of intact and n6-OHDA-lesioned rats receiving haloperidol was reached and maintained at significantly higher levels after 15 weeks of haloperidol treatment. …


Indomethacin Reduces Splenic Red Pulp Macrophage Populations In Female New Zealand White Rabbits, Thane S. Thurmond May 1995

Indomethacin Reduces Splenic Red Pulp Macrophage Populations In Female New Zealand White Rabbits, Thane S. Thurmond

Electronic Theses and Dissertations

In an effort to elucidate the mechanism by which indomethacin (IN) attenuates the stimulatory effect of estradiol (E$\sb2$) on rabbit splenic red pulp macrophages (RPM), thirty-nine female New Zealand White rabbits were divided into 10 groups: ovariectomized (OVX), OVX/IN at 0.1 and 5.0 mg/kg body weight (bw)/day; sham OVX (SOVX), SOVX/IN at 0.1 and 5.0 mg/kg bw/day; OVX/25 mg E2, OVX/25 mg E$\sb2$/IN at 0.1 and 5.0 mg/kg bw/day; intact Control. Quantitative changes in RPM population in response to the treatments were measured using a 0 to 4 histologic grading scale. Estradiol treatment resulted in increased RPM grade when compared …


Increased Alpha 1(I) Procollagen Gene Expression In Tight Skin (Tsk) Mice Myocardial Fibroblasts Is Due To A Reduced Interaction Of A Negative Regulatory Sequence With Ap-1 Transcription Factor., Neena Philips, Reza I. Bashey, Sergio A. Jimenez Apr 1995

Increased Alpha 1(I) Procollagen Gene Expression In Tight Skin (Tsk) Mice Myocardial Fibroblasts Is Due To A Reduced Interaction Of A Negative Regulatory Sequence With Ap-1 Transcription Factor., Neena Philips, Reza I. Bashey, Sergio A. Jimenez

Department of Medicine Faculty Papers

The TSK mouse, a model of fibrosis, displays exaggerated connective tissue accumulation in skin and visceral organs including the heart. To study the mechanisms of myocardial fibrosis in TSK mice, we established several strains of TSK mice myocardial fibroblasts in culture and examined the regulation of collagen gene expression in these cells. These strains displayed increased collagen gene expression in comparison with myocardial fibroblasts established from normal mice. On an average, the TSK myocardial fibroblast cultures showed a 4-fold increase in collagen synthesis and 4.4- and 3.6-fold increases, respectively, in alpha 1(I) and alpha 1(III) collagen mRNA steady state levels. …


Sustained Release Drug Delivery Devices, Thomas J. Smith, Paul Ashton, Paul A. Pearson Jan 1995

Sustained Release Drug Delivery Devices, Thomas J. Smith, Paul Ashton, Paul A. Pearson

Ophthalmology and Visual Science Faculty Patents

A method and device for treating a mammalian organism to obtain a desired local or systemic physiological or pharmacological effect is provided. The method includes administering a sustained release drug delivery system to a mammalian organism in need of such treatment at an area wherein release of an effective agent is desired and allowing the effective agent to pass through the device in a controlled manner. The device includes an inner core or reservoir comprising the effective agent; a first coating layer, which is essentially impermeable to the passage of the effective agent; and a second coating layer, which is …


Feasability Of Preventing Encrustation Of Urinary Catheters, J. M. Bibby, A. J. Cox, D. W. L. Hukins Jan 1995

Feasability Of Preventing Encrustation Of Urinary Catheters, J. M. Bibby, A. J. Cox, D. W. L. Hukins

Cells and Materials

Colonization of urinary catheters by bacteria which produce urease leads to an increase in urine pH, followed by deposition of the minerals struvite and hydroxyapatite. Adhesion of these encrusting deposits can be reduced, but not prevented, by using catheters with a smooth surface finish. Chemical methods for preventing encrustation are not completely satisfactory. A better way of preventing encrustation would be to prevent colonization of the catheter by bacteria. This might be achieved by controlled release of antimicrobial agents directly into the urine from the catheter itself. Preliminary experiments have demonstrated the feasibility of controlled release from solid silicone. However, …


Thyroid Hormone Influence On Oxygen Consumption Rates, Body Mass, And Lipid Metabolism In Mice With Noninsulin Dependent Diabetes Mellitus, Catherine Renee Clark Jan 1995

Thyroid Hormone Influence On Oxygen Consumption Rates, Body Mass, And Lipid Metabolism In Mice With Noninsulin Dependent Diabetes Mellitus, Catherine Renee Clark

Theses Digitization Project

No abstract provided.


Optical Bone Chambers As Tools For Studying The Bone-Implant Interface: A Review, Howard Winet Jan 1995

Optical Bone Chambers As Tools For Studying The Bone-Implant Interface: A Review, Howard Winet

Cells and Materials

Bone chamber intravital microscopy combines the control volume of in vitro models and the chemical complexity of in vivo models to optimize the study of bone physiology in situ. As an optical tool it provides a window to dynamic events at the tissue level of magnification. In particular, it allows measures of microvascular events: (1) in space by magnifying local perfused vasculature and microcirculation at any instant, and (2) in time by providing the same volume of tissue for weekly viewing of an evolving process such as bone healing. This quartz-bearing titanium screw has revealed a consistent order for …


Effectiveness Of Percutaneous Nephrostomy In Reversing Obstructive Renal Failure, I Ahmed, I H. Rizvi, A Aslam, M N. Ahmed, Y A. Hussain Jan 1995

Effectiveness Of Percutaneous Nephrostomy In Reversing Obstructive Renal Failure, I Ahmed, I H. Rizvi, A Aslam, M N. Ahmed, Y A. Hussain

Department of Radiology

A retrospective analysis of 34 patients of obstructive renal failure, initially managed by percutaneous nephrostomy was performed. Pre procedure blood biochemical profile was compared with upto one week follow-up of blood chemistry. There was a decline of 71.1% and 56.08% (P-values 0.0001 and 0.0028) in the mean values of serum creatinine and blood urea nitrogen respectively at 7 days after the procedure. Improvement in blood biochemical profile was solely dependent on performance of percutaneous nephrostomy.


Oncolog, Volume 40, Number 03, July-September 1995, Kathryn L. Hale, Vickie` J. Williams, Sunita Patterson Jan 1995

Oncolog, Volume 40, Number 03, July-September 1995, Kathryn L. Hale, Vickie` J. Williams, Sunita Patterson

OncoLog MD Anderson's Report to Physicians (All issues) Archives

  • M. D. Anderson leads the fight against bone pain from metastatic cancer
  • New computer program enhances the surgeon-patient consultation
  • Bladder cancer: molecular markers may guide treatment


Seroprevalence Of Toxoplasma Gondii In Domestic Animals In Pakistan, M Zaki Jan 1995

Seroprevalence Of Toxoplasma Gondii In Domestic Animals In Pakistan, M Zaki

Department of Pathology and Laboratory Medicine

The seroprevalence of Toxoplasma gondii infections among food animals in South-West Pakistan was measured by serological examination using a commercial latex agglutination test (LAT). In all 262 blood samples, from 100 cattle, 40 sheep, 58 goats and 64 chickens, were collected from the city abattoir. Titers considered diagnostically significant (> or = 1:64) were detected in 25% of cattle and 2.5% of sheep. None of the goats and chickens presented seropositivity for anti-toxoplasma antibodies. The study suggests the need for further investigations to determine the impact of these findings on the human population.


Epidermal Growth Factor Coordinately Regulates The Expression Of Prostaglandin G/H Synthase And Cytosolic Phospholipase A2 Genes In Embryonic Mouse Cells., Kenneth P. Chepenik, Arturo Diaz, Sergio A. Jimenez Aug 1994

Epidermal Growth Factor Coordinately Regulates The Expression Of Prostaglandin G/H Synthase And Cytosolic Phospholipase A2 Genes In Embryonic Mouse Cells., Kenneth P. Chepenik, Arturo Diaz, Sergio A. Jimenez

Department of Medicine Faculty Papers

Confluent, primary cultures of mouse embryo palate mesenchyme (MEPM) cells are refractory to activation of phospholipase A2 (PLA2) by the calcium ionophore A23187. However, treatment of these cultures with epidermal growth factor (EGF) permits the cells to activate PLA2 in response to A23187. We have developed this finding by exploring molecular mechanisms by which growth factors modulate mobilization and metabolism of arachidonic acid. We found chronic treatment (> 6 h) of confluent MEPM cells with EGF (a) increases their ability to metabolize exogenous arachidonic acid to prostaglandin E2 (PGE2) and (b) stimulated constitutive expression of activities of PLA2 and cyclooxygenase …


Stab Wounds To Rat Brains : Demyelination, Remyelination And The Cellular Response, Particularly Of Oligodendrocytes, Xie Dangci Aug 1994

Stab Wounds To Rat Brains : Demyelination, Remyelination And The Cellular Response, Particularly Of Oligodendrocytes, Xie Dangci

Loma Linda University Electronic Theses, Dissertations & Projects

The present body of knowledge concerning the results of central nervous system injury is incomplete and controversial. The role of oligodendrocytes, the cells involved in phagocytosis, the stages of demyelination, and the evidence for remyelination are of interest. Following stab wounds to rat brain cortex, corpus callosum and hippocampus, the animals were examined at 4,7,11,18,23,29,45,60 and 70 days postoperation (dpo). To help in the identification of cells immunocytochemical markers for astrocytes and immature oligodendrocytes were used. These were labels for glial fibrillary acidic protein (GFAP) and myelin/oligodendrocyte specific protein (MOSP) respectively. Light and electron microscopy were correlated using conventionally prepared …


Short And Long Term Effects Of Proton Microbeam Irradiation : In The Lateral Geniculate Nucleus Of Felis Domesticus, Chad Sherwood Reder Aug 1994

Short And Long Term Effects Of Proton Microbeam Irradiation : In The Lateral Geniculate Nucleus Of Felis Domesticus, Chad Sherwood Reder

Loma Linda University Electronic Theses, Dissertations & Projects

Little is known of the effects of proton irradiation on neural tissue. A 1.0 mm microbeam was used on the cat lateral geniculate nucleus (LGN) to quantify the short term (< 3 months) and long term (< 9 months) effects of radiation damage. The LGN is a large structure with well defined afferent, efferent, and receptive field properties.

Electrophysiological and histological techniques were used to examine the effects of the microbeam at 60, 40, and 16 Gy, administered as a single bolus. Recordings of light evoked responses in the LGN were obtained using microelectrodes in nine animals within 12 weeks of irradiation, and 6 animals within 36 weeks of irradiation. Receptive fields were mapped onto a tangent screen using standard receptive field techniques. Histological measures included afferent …