Culture Methods to Determine the Limit of Detection and Survival in Transport Media of Campylobacter Jejuni in Human Fecal Specimens.

A culture from human stool for diagnosis of Campylobacter-based intestinal illness takes several days, a wait that taxes the fortitude of the physician and the patient. A culture is also prone to false negative results from random loss of viability during specimen handling, overgrowth of other fecal flora, and poor growth of several pathogenic Campylobacter species on traditional media. These problems can confound clinical decisions on patient treatment and have limited the field from answering fundamental questions on Campylobacter growth and infections. We describe a procedure that estimates the lower limit of bacterial numbers that can be detected by a culture and a method for quantifying survival of C. jejuni in media used for transport of this fragile organism. Knowing this information, it becomes possible to set clinically relevant detection thresholds for diagnostic tests and address unstudied issues of whether non-symptomatic colonization is prevalent, if co-infection with other enteric pathogens is common, or if bacterial load correlates with symptoms or serious sequelae. The study also included testing of 1,552 prospectively collected patient diarrheal fecal specimens that were initially classified by conventional culture and further tested by a new enzyme immunoassay. Positive and discrepant specimens were then screened by four molecular methods to assign true-positive or true-negative status. The 5 non-culture methods showed complete agreement on all 48 positive and discrepant specimens, while the culture mis-identified 14 (28%). The specimens that were incorrectly identified by culture included 13 false negative and 1 false positive sample. This basic protocol can be used with multiple Campylobacter spp. and will allow the numbers of Campylobacter bacteria that produce symptoms of gastroenteritis in humans to be determined and for prevalence rates to be updated.

18F-Fluorocholine Uptake and Positron Emission Tomography Imaging in Rat Peritoneal Endometriosis.

Endometriosis is a debilitating disease that still needs surgery to be confirmed. Endometriosis is associated with increased plasma levels of phosphatidylcholines. 18F-fluorocholine ([18F]FCH) is a radiopharmaceutical that is metabolized to phosphatidylcholine inside the cells and can be traced by positron emission tomography (PET). Here we evaluate [18F]FCH as a potential tool for the noninvasive diagnosis of peritoneal endometriosis. Adult female Wistar rats had autologous uterine fragments dissected and grafted to the peritoneal wall to model peritoneal endometriosis. Ex vivo biodistribution assay and PET imaging studies were performed 30 minutes after [18F]FCH administration. The [18F]FCH uptake was 3-fold higher in endometriotic implant tissues than in muscle or peritoneum. Positron emission tomography imaging revealed the grafted uterine tissue in contrast to surrounding structures. Region-of-interest analysis of the reconstructed images showed higher accumulation of [18F]FCH by endometriotic lesions, 0.34 (0.04)% of injected dose per gram of tissue (ID/g), in comparison with muscle tissue, 0.08 (0.01)% ID/g. However, sham implants with fat tissue were also detectable in PET imaging. These preliminary findings of [18F]FCH uptake by ectopic uterine tissue implants and their localization by PET imaging encourage the future evaluation of this technique to detect small superficial endometriosis lesions in humans. Study protocols need to be further perfected and adapted for tests in women with endometriosis.

Factors Associated with Nipple Lesions in Puerperae.

This retrospective cross-sectional study aimed to evaluate the factors associated with nipple lesion development in puerperae. Analyses were performed using the Poisson regression with robust variance. The level of significance was set at 5% (p < 0.05). We evaluated 1270 puerperae, among whom 193 (15.4%) presented with nipple lesions. The condition was more prevalent among the mothers who did not receive information about breastfeeding [PR, 1.69; 95% confidence interval (CI), 1.19-2.42], those who underwent cesarean delivery (PR, 1.48; 95% CI, 1.02-2.16), those who used a pacifier (prevalence ratios (PR), 2.04; 95% CI, 1.05-3.95), those who used baby formula only (PR, 1.61; 95% CI, 4.82-5.36) and those who used baby formula combined with breastfeeding (PR, 1.61; 95% CI, 1.06-2.45). A lower incidence of nipple lesions was observed among those who did not receive information on hand expression of breast milk (PR, 0.65; 95% CI, 0.46-0.93) and those who did not breastfeed in the first hour of life (PR, 0.61; 95% CI, 0.38-0.97).

Amitriptyline and aerobic exercise or amitriptyline alone in the treatment of chronic migraine: a randomized comparative study.

UNLABELLED: To compare the preventive treatment benefits of amitriptyline and aerobic exercise or amitriptyline alone in patients with chronic migraine. METHOD: Sixty patients, both genders, aged between 18 and 50 years, with a diagnosis of chronic migraine, were randomized in groups called amitriptyline and aerobic exercise or amitriptyline alone. The following parameters were evaluated: headache frequency, intensity and duration of headache, days of the analgesic medication use, body mass index (BMI), Beck Depression Inventory (BDI) and Beck Anxiety Inventory (BAI) scores. RESULTS: In the evaluated parameters, was observed decrease in headache frequency (p=0.001), moderate intensity (p=0.048), in headache duration (p=0.001), the body mass index (p=0.001), Beck Depression Inventory (p=0.001) and Beck Anxiety Inventory scores (p=0.001), when groups were compared in the end of third month. CONCLUSION: In this study, the amitriptyline was an effective treatment for chronic migraine, but its efficacy was increased when combined with aerobic exercise.

Amitriptyline and aerobic exercise or amitriptyline alone in the treatment of chronic migraine: a randomized comparative study / Amitriptilina e exercício aeróbico ou amitriptilina isolada no tratamento da migrânea crônica: um estudo randomizado e comparativo

To compare the preventive treatment benefits of amitriptyline and aerobic exercise or amitriptyline alone in patients with chronic migraine. Method Sixty patients, both genders, aged between 18 and 50 years, with a diagnosis of chronic migraine, were randomized in groups called amitriptyline and aerobic exercise or amitriptyline alone. The following parameters were evaluated: headache frequency, intensity and duration of headache, days of the analgesic medication use, body mass index (BMI), Beck Depression Inventory (BDI) and Beck Anxiety Inventory (BAI) scores. Results In the evaluated parameters, was observed decrease in headache frequency (p=0.001), moderate intensity (p=0.048), in headache duration (p=0.001), the body mass index (p=0.001), Beck Depression Inventory (p=0.001) and Beck Anxiety Inventory scores (p=0.001), when groups were compared in the end of third month. Conclusion In this study, the amitriptyline was an effective treatment for chronic migraine, but its efficacy was increased when combined with aerobic exercise. .

Comparar os benefícios do tratamento preventivo em pacientes com migrânea crônica utilizando a amitriptilina associada ao exercício aeróbico ou amitriptilina isolada. Método Sessenta pacientes de ambos os sexos com idade entre 18 e 50 anos e com diagnóstico de migrânea crônica foram randomizados para receber amitriptilina e orientados a: praticar exercícios aeróbicos ou somente a amitriptilina isolada. Os seguintes parâmetros foram avaliados: frequência, intensidade e duração da cefaleia, dias de uso de medicação analgésica, índice de massa corporal (IMC), e pontuação nas escalas de Beck Depression Inventory (BDI) e Beck Anxiety Inventory (BAI). Resultados Nos parâmetros avaliados, houve redução na frequência da cefaleia (p=0,001), intensidade moderada (p=0,048), na duração (p=0,001), no índice de massa corporal (p=0,001), e pontuação nas escalas Beck Depression Inventory (p=0,001) e Beck Anxiety Inventory (p=0,001), quando os grupos foram comparados ao final do terceiro mês. Conclusão A amitriptilina foi um tratamento eficaz para a migrânea crônica, mas sua eficácia foi maior quando combinada com exercício aeróbio. .

"Hay que ponerse en los zapatos del joven": adaptive parenting of adolescent children among Mexican-American parents residing in a dangerous neighborhood.

We examined parenting of adolescents with Consensual Qualitative Research analyses of five 90-minute focus groups with 45 Mexican immigrant parents residing in a high-crime and low-income neighborhood. Parents identified gangs as their major challenge in parenting. Relatedly, they endorsed control-oriented practices to ensure the safety of their adolescents. In addition, parents used practices that aimed to build strong, trusting relationships with their adolescents. The co-occurrence of parenting strategies that promote strong parent-adolescent bonds along with strict monitoring highlights the need to conceptualize parenting with both controlling as well as supportive dimensions. Moreover, the parents' narratives pertaining to the dangers in their neighborhood suggest that interventions for Latino families should be not only consistent with their cultural heritage, but also grounded in the families' local neighborhood contexts.

The family as mediator of the impact of parent-youth acculturation/enculturation and inner-city stressors on Mexican American youth substance use.

Youth substance use was investigated in a sample of Mexican-origin mothers and youth (93 dyads totaling 186 individuals). We tested the hypotheses that both acculturation and inner-city risk factors impact substance use largely because they undermine family relationships. Mothers and youth completed self-report measures of acculturation and enculturation. Youth completed questionnaires of family relationships, inner-city risk factors, and substance use. Youth substance use was measured with an index of lifetime alcohol, tobacco, and marijuana use based on the Youth Risk Behavior Survey. As predicted, mother-youth (dyadic) acculturation/enculturation, as well as exposure to violence, were significantly associated with substance use. Family cohesion mediated the impact of violence exposure on substance use. However, both cohesion and violence had unique and significant associations with substance use. Furthermore, family relationships did not mediate the link between substance use and mother-youth acculturation or mother-youth enculturation. Results underscore the need to develop and test hypotheses that link Latino youth substance use with both acculturation and inner-city contexts that do not solely rely on family relationships as mediators.

Glycogen synthase kinase-3beta modulates notch signaling and stability.

Notch receptors modulate transcriptional targets following the proteolytic release of the Notch intracellular domain (NotchIC). Phosphorylated forms of NotchIC have been identified within the nucleus and have been associated with CSL members, as well as correlated with regions of the receptor that are required for activity. Genetic studies have suggested that the Drosophila homolog of glycogen synthase kinase-3beta (GSK3beta), Shaggy, may act as a positive modulator of the Notch signaling. GSK3beta is a serine/threonine kinase and is a component of the Wnt/wingless signaling cascade. Here, we observed that GSK3beta was able to bind and phosphorylate Notch1IC in vitro, and attenuation of GSK3beta activity reduced phosphorylation of NotchIC in vivo. Functionally, ligand-activated signaling through the endogenous Notch1 receptor was reduced in GSK3beta null fibroblasts, implying a positive role for GSK3beta in mammalian Notch signaling. As a possible mechanistic explanation of the effect of GSK3beta on Notch signaling, we observed that inhibition of GSK3beta shortened the half-life of Notch1IC. Conversely, activated GSK3beta reduced the quantity of Notch1IC that was degraded by the proteasome. These studies reveal that GSK3beta modulates Notch1 signaling, possibly through direct phosphorylation of the intracellular domain of Notch, and that the activity of GSK3beta protects the intracellular domain from proteasome degradation.