Contusión pulmonar

Fil: Perinetti, Carlos E.. Universidad Nacional de Cuyo. Facultad de Ciencias Médica

Measurement of g-factor tensor in a quantum dot and disentanglement of exciton spins

We perform polarization-resolved magneto-optical measurements on single InAsP quantum dots embedded in an InP nanowire. In order to determine all elements of the electron and hole $g$-factor tensors, we measure in magnetic field with different orientations. The results of these measurements are in good agreement with a model based on exchange terms and Zeeman interaction. In our experiment, polarization analysis delivers a powerful tool that not only significantly increases the precision of the measurements, but also enables us to probe the exciton spin state evolution in magnetic fields. We propose a disentangling scheme of heavy-hole exciton spins enabling a measurement of the electron spin $T_2$ time

La lucha contra la tuberculosis en la provincia de Mendoza

Fil: Hualde de Pérez Guilhou, Margarita. Universidad Nacional de Cuyo. Facultad de Filosofía y LetrasFil: Gorayeb de Perinetti, Yasmin. Universidad Nacional de Cuyo. Facultad de Filosofía y LetrasFil: Perinetti, Carlos E.. Universidad Nacional de Cuyo. Facultad de Filosofía y Letra

Outcome stability of orthopaedic treatment of skeletal Class III malocclusion: A study of prognostic agreement between three models

Introduction: Long-term stability of the treatment outcome of skeletal Class III malocclusion is always not achievable, thereforeseveral prediction models of stability of orthopaedic treatment of the Class III malocclusion have been proposed. Aim: This cross-sectional study was aimed at the evaluation of the prognostic agreement and association between three differentprediction models based on skeletal parameters recorded on lateral cephalograms. Materials and methods: A total of 75 subjects (34 females and 41 males, age range 7-11, mean age 9.1±1.2years) having skeletal ClassIII malocclusion were included in the study. Prediction models reported by Baccetti et al. 2004 (prediction model 1), Moon et al.2005 (prediction model 2) and Yoshida et al. 2006 (prediction model 3), were considered. Percentage agreement and unweighted kappa coefficient evaluated the agreement between the prediction models in terms of stable or unstable cases. Multiple regressions were run to evaluate the association between the absolute scores obtained from each of the prediction model (prediction scores). Results: Percentage agreement ranged from 77.3% (models 2 and 3) to 89.3%, (models 1 and 2) and corresponding unweighted kappa coefficients ranged from 0.099 (models 1 and 3) to 0.205 (models 2 and 3). The prediction score from model 3 was significantly associated with those from both the other models; on the contrary, prediction scores from models 1 and 2 were not significantly associated. Conclusions: Agreement in terms of stability or instability outcome derived from these models is only partial and not satisfactory,even though significant association between the prediction scores denotes a common biological meaning of the models

Burden of herpes zoster-associated chronic pain in Italian patients aged 50 years and over (2009¿2010): a GP-based prospective cohort study.

BackgroundPost-herpetic neuralgia (PHN) is the most common complication in herpes zoster (HZ) patients.MethodsWe performed a longitudinal, prospective study in 108 general practices throughout Italy to assess how many immunocompetent patients aged ¿50 years with newly diagnosed HZ develop HZ-associated pain, its duration and management over 6-months. HZ-associated pain was assessed by a direct question to the patient and by self-assessment of the worst pain felt in the previous two weeks on a visual analogue scale (VAS), a score ¿3 was taken as pain. PHN was defined as pain reported during the study period persisting for ¿3 months. Quality of life (QoL) was measured using the SF-12 questionnaire.ResultsAt enrolment, 370 of the 413 patients (89.6%) reported HZ-associated pain which was still present in 20.6% and 9.2% of patients after three and six months, respectively, despite many patients receiving recommended anti-viral therapy. The overall QoL scores were lower than those in healthy Italians of similar age; scores for patients with HZ-associated pain were lower. The presence of >50 vesicles and VAS score ¿3 at enrolment, and being male were significantly associated with PHN at three months.ConclusionsThese results suggest that HZ and PHN represent an important burden of disease in the elderly. There is a need for interventions that can prevent and reduce the burden of HZ to help improve the quality of life of the elderly. These data may be useful as baseline epidemiology data for the assessment of the impact of the VZV vaccine in Italy, after its implementation

Relationship between Pain with Intercourse and Psychological Distress Among Women with Vulvar Vestibulitis Syndrome

Background: Vulvar Vestibulitis (VVS) is the most common cause of vulvo-vaginal pain in reproductive age women, affecting up to 15% of the general female population. Women with VVS have pain with intercourse, and sensitivity to touch on genital contact. Psychological characteristics such as anxiety and somatization are also common in the population. In this study, we sought to assess the relationship between self reported intercourse-related pain and psychological distress among women with VVS. We hypothesized that women who reported higher levels of intercourse related pain were more likely to have a higher level of psychological distress 1 year after their initial visit to the UNC Vulvar Pain Clinic

Relationship Between Pain with Intercourse and Psychological Distress Among Women with Vulvar Vestibulitis Syndrome

Background: Vulvar Vestibulitis (VVS) is the most common cause of vulvo-vaginal pain in reproductive age women, affecting up to 15% of the general female population. Women with VVS have pain with intercourse, and sensitivity to touch on genital contact. Psychological characteristics such as anxiety and somatization are also common in the population. In this study, we sought to assess the relationship between self reported intercourse-related pain and psychological distress among women with VVS. We hypothesized that women who reported higher levels of intercourse related pain were more likely to have a higher level of psychological distress 1 year after their initial visit to the UNC Vulvar Pain Clinic.

EFFECTS OF VITAMIN C SUPPLEMENTATION ON THE CHRONIC PHASE OF CHAGAS DISEASE

Introduction: In order to examine the effectiveness of vitamin C (ascorbic acid) in combating the oxidative insult caused by Trypanosoma cruzi during the development of the chronic phase of Chagas disease, Swiss mice were infected intraperitoneally with 5.0 × 104 trypomastigotes of T. cruzi QM1strain. Methods: Mice were given supplements of two different doses of vitamin C for 180 days. Levels of lipid oxidation (as indicated by thiobarbituric acid reactive substances-TBARS), total peroxide, vitamin C, and reduced glutathione were measured in the plasma, TBARS, total peroxide and vitamin C were measured in the myocardium and histopathologic analysis was undertaken in heart, colon and skeletal muscle. Results: Animals that received a dose equivalent to 500 mg of vitamin C daily showed increased production of ROS in plasma and myocardium and a greater degree of inflammation and necrosis in skeletal muscles than those that received a lower dose or no vitamin C whatsoever. Conclusion: Although some research has shown the antioxidant effect of vitamin C, the results showed that animals subject to a 500 mg dose of vitamin C showed greater tissue damage in the chronic phase of Chagas disease, probably due to the paradoxical actions of the substance, which in this pathology, will have acted as a pro-oxidant or pro-inflammatory