El presente trabajo tuvo por objetivo evaluar el efecto de la aplicación por vía intramuscular (IM) de plasma seminal sobre la supervivencia embrionaria en alpacas luego que fueron servidas por monta natural. El estudio fue realizado durante los meses de enero a marzo del 2013, en el departamento de Puno. El plasma seminal se obtuvo de muestras de semen de alpaca, colectadas y diluidas en proporción 1:1 en buffer fosfato salino (PBS), para luego ser centrifugadas y conservadas en congelación hasta su posterior uso. Alpacas hembras vacías (n = 117), fueron seleccionadas de acuerdo a la presencia de un folículo dominante ≥ de 7 mm detectado por ecografía tras rectal; las cuales fueron servidas por monta natural y distribuidas aleatoriamente en 3 grupos de comparación: T1(n=40) a las cuales se les administró 1 ml de plasma seminal diluido en PBS, vía IM; T2(n=39) a las que cuales se les administró 1 ml de un análogo de GnRH (0.0042 mg de acetato de buserelina), vía IM y T3(n=38) sin administración de producto alguno. Posteriormente se evaluaron mediante ecografía tras rectal el día 25 post monta para determinar la gestación y el día 62 para determinar la tasa de supervivencia embrionaria. Todos los animales en estudio fueron alimentados con pastos naturales y recibieron las mismas condiciones de manejo. Los resultados obtenidos muestran una tasa de concepción al día 25 post monta del 67.5%, 51.3% y 55.3% y una tasa de supervivencia embrionaria al día 62 del 92.6%, 80% y 85.7% para los grupos T1, T2 y T3 respectivamente. Los resultados obtenidos sugieren que la aplicación intramuscular de plasma seminal inmediatamente después de la monta determina un incremento porcentual de la supervivencia embrionaria en comparación a la aplicación de GnRH o la monta natural, sin embargo dicha diferencia no es estadísticamente significativa (P˂0.05).

The purpose of the studies reported in this thesis was to provide further evidence in support of the hypothesis that ovulation-inducing factor (OIF) is a component of seminal plasma which is conserved amongst mammals. Based on studies conducted in vivo, the results indicate that males ejaculate a substance during copulation which is responsible for the ovulatory and luteotrophic effect in female camelids. In our lab we have developed an <i>in vivo</i> llama bioassay to study the presence and biological effects of OIF in seminal plasma from different species.<p> The objective of the first experiment within the first study was to determine if llama seminal plasma would stimulate ovulation in prepubertal mice. Mice were treated with a single 0.1 mL intraperitoneal dose of 1) phosphate-buffered saline (negative control), 2) 5 µg gonadotropin-releasing hormone (GnRH), 3) 5 IU of human chorionic gonadotropin (hCG) or 4) llama seminal plasma. Results indicate that prepubertal mice treated with GnRH, hCG or llama seminal plasma stimulated similar proportions of mice to ovulate, which were all higher than the proportion of mice that ovulated after saline treatment. The number of oocytes observed under a stereomicroscope was also higher in all treatment groups than in mice treated with saline. However, the number of oocytes observed was lower in mice treated with seminal plasma than those treated with GnRH, both of which were similar to the number of oocytes observed in hCG treated mice.<p> In a second part of this study the corollary that OIF is present in the seminal plasma of horses and pigs was examined. Seminal plasma from horses or pigs was administered intramuscularly to female llamas and ovulation was monitored using transrectal ultrasonography. Llamas were treated with an intramuscular dose of 1) phosphate buffered saline (negative control), 2) llama seminal plasma (positive control), 3) equine seminal plasma or 4) porcine seminal plasma. Ovulations were detected in llamas treated with seminal plasma while none were observed in saline-treated llamas. The proportion of llamas that ovulated when treated with equine seminal plasma was higher than llamas treated with saline. The proportion of llamas that ovulated after porcine seminal plasma tended to differ from negative control groups, but did not reach statistical significance. The proportion of llamas that ovulated after equine or porcine seminal plasma treatment was lower than animals treated with llama seminal plasma which indicates that either OIF is not present in equal concentration among mammals, or that OIF is not structurally the same across mammals.<p> The second study was carried out to test the hypothesis that OIF stimulates LH secretion at the level of the anterior pituitary gland. The second objective was to determine if the degree of LH release was related to the dose of OIF treatment. Anterior pituitary cells (2 x 10^6 cells/ well) from either llamas (reflex ovulator) or cattle (spontaneous ovulator) were incubated for 2 hours with either media containing no treatment (control), GnRH or OIF. In all experiments, GnRH and OIF stimulated more LH secretion than control groups. An effect of dose was evident in the llama pituitary cell culture where mean LH concentrations were greater in wells treated with a higher dose of OIF in comparison to wells treated with a lower dose, both of which were higher than in wells with no treatment. Although OIF stimulated LH release in bovine cell cultures, an apparent dose response was not detected. Results indicate that the preovulatory LH surge observed after OIF treatment in camelids may be the result of OIF directly stimulating LH release from gonadotrope cells within the anterior pituitary gland. In conclusion these results illustrate that the presence and the response to OIF is conserved among species that share no relation or common reproductive strategy.

The purpose of the studies reported in this thesis was to provide further evidence in support of the hypothesis that ovulation-inducing factor (OIF) is a component of seminal plasma which is conserved amongst mammals. Based on studies conducted in vivo, the results indicate that males ejaculate a substance during copulation which is responsible for the ovulatory and luteotrophic effect in female camelids. In our lab we have developed an <i>in vivo</i> llama bioassay to study the presence and biological effects of OIF in seminal plasma from different species.<p> The objective of the first experiment within the first study was to determine if llama seminal plasma would stimulate ovulation in prepubertal mice. Mice were treated with a single 0.1 mL intraperitoneal dose of 1) phosphate-buffered saline (negative control), 2) 5 µg gonadotropin-releasing hormone (GnRH), 3) 5 IU of human chorionic gonadotropin (hCG) or 4) llama seminal plasma. Results indicate that prepubertal mice treated with GnRH, hCG or llama seminal plasma stimulated similar proportions of mice to ovulate, which were all higher than the proportion of mice that ovulated after saline treatment. The number of oocytes observed under a stereomicroscope was also higher in all treatment groups than in mice treated with saline. However, the number of oocytes observed was lower in mice treated with seminal plasma than those treated with GnRH, both of which were similar to the number of oocytes observed in hCG treated mice.<p> In a second part of this study the corollary that OIF is present in the seminal plasma of horses and pigs was examined. Seminal plasma from horses or pigs was administered intramuscularly to female llamas and ovulation was monitored using transrectal ultrasonography. Llamas were treated with an intramuscular dose of 1) phosphate buffered saline (negative control), 2) llama seminal plasma (positive control), 3) equine seminal plasma or 4) porcine seminal plasma. Ovulations were detected in llamas treated with seminal plasma while none were observed in saline-treated llamas. The proportion of llamas that ovulated when treated with equine seminal plasma was higher than llamas treated with saline. The proportion of llamas that ovulated after porcine seminal plasma tended to differ from negative control groups, but did not reach statistical significance. The proportion of llamas that ovulated after equine or porcine seminal plasma treatment was lower than animals treated with llama seminal plasma which indicates that either OIF is not present in equal concentration among mammals, or that OIF is not structurally the same across mammals.<p> The second study was carried out to test the hypothesis that OIF stimulates LH secretion at the level of the anterior pituitary gland. The second objective was to determine if the degree of LH release was related to the dose of OIF treatment. Anterior pituitary cells (2 x 10^6 cells/ well) from either llamas (reflex ovulator) or cattle (spontaneous ovulator) were incubated for 2 hours with either media containing no treatment (control), GnRH or OIF. In all experiments, GnRH and OIF stimulated more LH secretion than control groups. An effect of dose was evident in the llama pituitary cell culture where mean LH concentrations were greater in wells treated with a higher dose of OIF in comparison to wells treated with a lower dose, both of which were higher than in wells with no treatment. Although OIF stimulated LH release in bovine cell cultures, an apparent dose response was not detected. Results indicate that the preovulatory LH surge observed after OIF treatment in camelids may be the result of OIF directly stimulating LH release from gonadotrope cells within the anterior pituitary gland. In conclusion these results illustrate that the presence and the response to OIF is conserved among species that share no relation or common reproductive strategy.

The overall objective was to elucidate the mechanism of action of ovulation-inducing factor/nerve growth factor (OIF/NGF) in the reproductive function of spontaneous and induced ovulators, using cow and llama as models. In Study 1, the dynamics of trkA, the high affinity receptor for OIF/NGF, were studied during periovulatory period in cows. Unilateral ovariectomies were performed by colpotomy on Days 2, 4 and 6 of the estrous cycle (Day 0= ovulation), and before and after LH administration. Ovarian samples were processed for immunofluorescent detection of trkA. The intensity and area of immuno-positive staining, and the proportion of immuno-positive cells in both the granulosa and theca layers were higher in dominant than in subordinate follicles (P<0.05). Dominant follicles displayed a different intracellular distribution of trkA from subordinate follicles. The number of positive cells was higher in the developing CL (Day 2 and 4) than in the mature or regressing CL (Day 6, Pre-LH, and Post-LH). In Study 2, the distribution of GnRH neurons in the hypothalamus was examined in female llamas (n = 4). Hypothalamic samples were processed for immunohistochemistry for GnRH. The distribution of GnRH neurons had no evident accumulation in specific hypothalamic nuclei. The majority of GnRH neurons were detected in the anterior and medio-basal hypothalamus (P<0.05). The GnRH neuron fibers were detected primarily in the median eminence and in the medio-basal hypothalamus. In Study 3, the relationship between trkA and GnRH neurons in the llama diencephalon was examined in llama brains (n = 4) obtained in Study 2. Samples were stained using double immunofluorescence. TrkA immuno-reactivity was present in most hypothalamic areas examined; the highest density was found in the diagonal band of Broca and the periventricular nuclei. A low percentage of GnRH cells (1%) showed immuno-reactivity to trkA. Close association between immuno-reactive cells (i.e., GnRH and trkA in the same microscopic field) was detected rarely (3/160 GnRH neurons). We concluded that: 1) the high affinity receptor for OIF/NGF is expressed in greater quantities in dominant than subordinate follicles and in the developing CL; 2) GnRH neurons of llamas are concentrated in the anterior and middle hypothalamus, in close relationship to the third ventricle; and, 3) expression of trkA receptors on GnRH neurons was rare, suggesting that the ovulatory effect of OIF/NGF is not via direct interaction with GnRH neurons.

Approved for public release, distribution is unlimited / The purpose of this study is to examine the role of the LOGCAP Logistics Support Unit (LSU) in Southwest Asia during the early stages of Operations Enduring and Iraqi Freedom. The study provides a summary of the LSU makeup, their roles, training and their processes and procedures. The study goes on to analyze the impact of the training and processes and procedures on the mission of the LSU and changes that were made during their deployment. Evidence is provided to demonstrate the difficulties the LSU encountered as a result of role confusion and inadequate training. The empirical data presented shows a correlation between role confusion and inadequate training as the cause of extended timelines and numerous changes to efforts undertaken to meet U.S. Military needs. The research then outlines the improvements that were attempted as well as the results of their implementation. In conclusion, the study provides conclusions based upon the analysis and presents three recommendations for improving the LSU to ensure the next deployment of the LSU to large-scale contingency leverages the lessons learned from this experience. Review and analysis of empirical data gathered from December 2002 through May 2003, interviews with LSU members, and General Accounting Office (GAO) audit reports provided the basis for this study / Civilian, United States Army

There is an established link between posttraumatic stress disorder (PTSD) and criminal activity. Of every 100 veterans who served during Operation Enduring Freedom (OEF)/Operation Iraqi Freedom (OIF), 11 to 20 percent are diagnosed with PTSD each year. Previous research has documented that veterans are incarcerated at higher percentages compared to nonveteran inmates, though little published research examines incidence of PTSD relative to violent crime. Using Agnew's general strain theory as the foundation, the purpose of this correlational study was to examine combat service, PTSD, and specific violent crimes as defined by the FBI as murder and nonnegligent manslaughter, forcible rape, robbery, and aggravated assaults; while controlling for branch of service, age, and sex. The sample consisted of 46 OEF/OIF inmates (federal and state) 9 of whom were convicted of a violent crime. Results from the multiple logistic regression analysis showed that combat service, PTSD, sex, and branch of service were not statistically significant predictors of imprisonment of OEF/OIF veterans for violent crime. Age, however, was statistically significant p = .029. The findings of this study contribute to social change by providing policymakers and prison administrators nuanced information (i.e., characteristic information - age, sex, branch of service, etc.) about the needs of this unique prison population with regards to reintegration. This may in turn contribute to improved reintegration initiatives to enrich the lives of veterans, their families, and the communities where veterans reside when returning from war. Focusing on reintegration will be very beneficial.

Posttraumatic Stress Disorder (PTSD), the signature wound of the Iraq and Afghanistan wars, has caused veterans to face numerous and complex challenges within their intimate relationships post-deployment. Although other studies have explored the intimate relationships of veterans, the same level of research has not focused on OEF/OIF veterans from the standpoint of dyadic adaptation using the Dyadic Adaptation Scale (DAS). The purpose of this study was to explore the level of dyadic adaptation in intimate relationships of OEF/OIF veterans who self-reported PTSD and those who did not. More specifically, this study identified the factors that were related to the level of dyadic adaptation for this population. Participants were 126 OEF/OIF veterans who were enrolled in colleges and universities throughout the state of Iowa; provided basic background information in response to a demographics questionnaire; and completed the DAS to yield scores of the participants' dyadic adaptation within their intimate relationships, the Family Crisis Oriented Personal Evaluation Scales (F-COPES) that highlighted their levels of coping, and the Family Inventory of Life Events (FILE) that measured their life stressors within the last 12 months. The results of the correlation, MANOVA, ANOVA, and hierarchical regression analyses provided four major findings and implications. First, among participants with PTSD, DAS was correlated with tours of duty, FILE, F-COPES, and pharmacologic intervention, and among participants without PTSD, DAS was correlated with FILE. Second, the total dyadic adaptation scores for participating OEF/OIF veterans suggested an overall slight level of relationship dissatisfaction. Third, participants who self-reported PTSD had lower DAS total scores than participants who did not self-report PTSD. In addition, there was a significant difference on all four subscales (cohesion, satisfaction, consensus, and affectional expression) of the DAS between the two groups of participants. Fourth, in terms of participants who self-reported PTSD, tours of duty, types of relationships, and life stressors were the only variables that positively affected dyadic adaptation. In contrast, for participants who did not self-report PTSD, FILE was the only variable that affected the dyadic adaptation. These findings have important implications that highlight areas in which clinicians, educators, and individuals within the helping professions can join the Department of Veterans Affairs' initiatives to improve the reintegration of OEF/OIF veterans into their familiar roles post-deployment. Future research should explore the relationship norms pre-deployment and across relationship statutes, the identity of military intimate partners within treatment facilities, and the perceptions of treatment and dyadic adaptation after OEF/OIF veterans receive treatment in the community by civilian providers as compared to treatment in VA facilities.

Veterans of the Iraqi and Afghanistan conflicts have frequently returned with injuries such as mild traumatic brain injury (mTBI) and posttraumatic stress disorder (PTSD). More recently, concern has been raised about the large number of returning soldiers who are diagnosed with both. Literature exists on the neuropsychological factors associated with either alone, however far less research has explored the effects when combined (PTSD+mTBI). With a sample of 206 OEF/OIF veterans, the current study employed neuropsychological and psychological measures to determine whether participants with PTSD+mTBI have poorer cognitive and psychological outcomes than participants with PTSD-o, mTBI-o, or veteran controls (VC), when groups are matched on IQ, education, and age. The PTSD+mTBI and mTBI-o groups exhibited very similar neuropsychology profiles, and both PTSD+mTBI and mTBI-o performed significantly (α=.01) worse than VC on executive functioning and processing speed measures. There were no significant differences between VC and PTSD-o on any notable neuropsychology measures. In contrast, on the psychological measures, the PTSD+mTBI and PTSD-o groups were identical to each other and more distressed than either mTBI-o or VC. These findings suggest there are lasting cognitive impairments following mTBI that are unique to the condition and cannot be attributed to known impairments associated with distress.

No description available.

No description available.