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Full-Text Articles in Medicine and Health Sciences

Approaches To Measuring The Frequency Of Achondroplasia And Hypochondroplasia Causing Fgfr-3 Mutations In Human Sperm, Andrew Timothy Daters Jan 2002

Approaches To Measuring The Frequency Of Achondroplasia And Hypochondroplasia Causing Fgfr-3 Mutations In Human Sperm, Andrew Timothy Daters

LSU Master's Theses

Achondroplasia and hypochondroplasia are two forms of skeletal dysplasias caused predominantly by single base mutations in the fibroblast growth factor receptor 3 gene (FGFR-3). The mutation for achondroplasia is a G1138A/C substitution and the mutation for hypochondroplasia (occurring about 50% of the time) is a C1620A/G substitution. Recent genetic studies have shown that spontaneous mutations for achondroplasia and hypochondroplasia occur exclusively on the paternally derived chromosome, suggesting that these mutations occur preferentially during spermatogenesis. For unknown reasons, the mutation rates at these FGFR-3 nucleotides appear to occur at a much higher frequency than nucleotide specific mutation rates observed in other …


Misconceptions Surrounding The Safety Of Home Birth And Hospital Birth, Misty D. Richard Jan 2002

Misconceptions Surrounding The Safety Of Home Birth And Hospital Birth, Misty D. Richard

LSU Master's Theses

Much debate surrounds the topic of women choosing to deliver their infants at home with the services of a midwife. The outcomes of women beginning labor at home, ultimately delivering at home, and the infants born at home were studied in order to determine the safety of home birth among expectant women choosing to be attended by a midwife licensed to practice by the state of Louisiana. Trends associated with those choosing home birth and the frequency of home birth were also analyzed. The study was conducted using retrospective records of clients accepted during the study years 1986-2000. During the …


Evaluation Of Feeding Chlamydospores Of Duddingtonia Flagrans To Ewe/Lamb Pairs And Weaned Lambs To Biologically Control Levels Of Haemonchus On Pasture, Natalee Peart Jan 2002

Evaluation Of Feeding Chlamydospores Of Duddingtonia Flagrans To Ewe/Lamb Pairs And Weaned Lambs To Biologically Control Levels Of Haemonchus On Pasture, Natalee Peart

LSU Master's Theses

Gastroenteritis caused by the nematode parasite Haemonchus contortus is a serious concern for small ruminants in the tropics and subtropics. Control is traditionally by anthelmintics and pasture management, however this specific nematode parasite has become resistant to many anthelmintics and research is now focused on novel control methods including biological control using the nematode-trapping fungus, Duddingtonia flagrans. The objective of this study was to investigate the effectiveness of feeding chlamydospores of the fungus at a dosage of 5 x 105 spores/kg of BW to ewe/lamb pairs (Trial 1) and weaned lambs (Trial 2) for a total of 17 and 8 …


The Effect Of Experimental Gastric Dilatation-Volvulus On The Adenosine Triphosphate Content And Cellular Permeability Of The Canine Gastric And Jejunal Mucosa, Laura Elizabeth Peycke Jan 2002

The Effect Of Experimental Gastric Dilatation-Volvulus On The Adenosine Triphosphate Content And Cellular Permeability Of The Canine Gastric And Jejunal Mucosa, Laura Elizabeth Peycke

LSU Master's Theses

This study was designed to characterize changes in the content of adenosine triphosphate (ATP) and cellular permeability of gastric and jejunal mucosa during gastric dilatation-volvulus (GDV). Our hypothesis stated that experimental GDV would result in a decrease in ATP content and cellular integrity of the gastric and intestinal mucosa that may improve after decompression and derotation of the stomach. Fifteen medium-to-large mixed-breed male dogs were randomly divided into three groups: GDV dogs, Ischemia dogs and Control dogs. All dogs were maintained on gas anesthesia for 210 minutes. The GDV dogs had a GDV for 120 minutes with a 90-minute period …


Evaluating The Effectiveness Of A Parent Training Program On Adolescent Mothers And Their Communicative Interactions With Their Children, Sonja Lee Pruitt Jan 2002

Evaluating The Effectiveness Of A Parent Training Program On Adolescent Mothers And Their Communicative Interactions With Their Children, Sonja Lee Pruitt

LSU Master's Theses

The purpose of the current study was to evaluate the effectiveness of the “Tips About Talk” parent-training classes for increasing adolescent mothers’ knowledge about their children’s speech and language development and the quality of mothers’ interactions with their children. Seven mother-child dyads served as participants. All of the participating mothers were single, African American, and enrolled in a GED program. The mean age of the mothers was 20.57 years, and their mean educational level was 9.29 years. Their children were between the ages of 24 and 67 months. The experimental treatment involved four “Tips About Talk” parent-training workshops. The control …


Comparative Study Of Analog And Digital Hearing Aids, Adam Benjamin Lopez Jan 2002

Comparative Study Of Analog And Digital Hearing Aids, Adam Benjamin Lopez

LSU Master's Theses

The purpose of the present study was to determine if objective and/or subjective differences between analog and digital hearing aids exist when blinding is utilized in the protocol and circuitry is controlled. Ten normal hearing and seven hearing impaired subjects were monaurally fitted with analog and digital hearing aids. Probe microphone measures were obtained at the plane of the tympanic membrane at two output levels (40 dB SPL and 70 dB SPL). Listener performance in quiet was evaluated via word recognition testing, listener performance in noise was evaluated via the Hearing in Noise Test, and listener preference was evaluated via …


A Descriptive Study Of At Risk Mothers' Interactions With Their Children, Vicky Lynn Poston Jan 2002

A Descriptive Study Of At Risk Mothers' Interactions With Their Children, Vicky Lynn Poston

LSU Master's Theses

The purpose of this study was to describe the home environment and nature of mother-child interactions of low-income African-American mothers. The subjects included eight mother-child dyads. All of the mothers were single, African-American and working toward a G.E.D. Their age ranged from 17-30 years of age. Their children ranged in age from 24-67 months. A home visit and a mother-child play session that was collected at the children’s child care center were utilized to collect the data. The findings from the current study were consistent with the literature reviewed in that most of the mothers produced a decreased speech rate, …


Antipredator Conditioning In Mississippi Sandhill Cranes (Grus Canadensis Pulla), Jennifer Jill Heatley Jan 2002

Antipredator Conditioning In Mississippi Sandhill Cranes (Grus Canadensis Pulla), Jennifer Jill Heatley

LSU Master's Theses

The Mississippi Sandhill Crane (Grus canadensis pulla), the most endangered North American crane, is considered critically endangered and is protected by Federal and State law. Substantial funding has established the Mississippi Sandhill Crane National Wildlife Refuge in Southern Mississippi and an artificial insemination / breeding facility at the Audubon Center for Research of Endangered Species in New Orleans, Louisiana to promote species recovery. In spite of extensive time, labor, and money invested in captive propagation, juvenile Mississippi Sandhill Cranes suffer substantial mortality due to predation by bobcats (Lynx rufus), coyotes (Canis latrans) and red tailed hawks (Buteo jamaicensis) upon reintroduction …