NuPotential (United States)

Our previous studies documented that interleukin-15 receptor α (IL-15Rα) knockout (KO) mice exhibited hyperactivity, memory impairment, and desperate behavior, which are core features of schizophrenia and depression. Due to the overlapping symptomology and pathogenesis observed for schizophrenia and depression, the present study attempted to determine whether IL-15Rα was associated with the risk of schizophrenia or depression. One hundred fifty-six participants, including 63 schizophrenia patients, 29 depressive patients, and 64 age-matched healthy controls, were enrolled in the study. We investigated the circulating levels of soluble IL-15Rα and analyzed potential links between the IL-15Rα levels and clinical symptoms present in schizophrenia or depressive patients. We observed reduced serum IL-15Rα levels in schizophrenia patients, but not depressive patients compared with controls. Moreover, a significant negative association was observed between the circulating IL-15Rα levels and excited phenotypes in the schizophrenia patients. The IL-15Rα KO mice displayed pronounced pre-pulse inhibition impairment, which was a typical symptom of schizophrenia. Interestingly, the IL-15Rα KO mice exhibited a remarkable elevation in the startle amplitude in the startle reflex test compared to wild type mice. These results demonstrated that serum levels of soluble IL-15Rα were reduced in schizophrenia and highlighted the relationship of IL-15Rα and the excited phenotype in schizophrenia patients and mice.

Wer eine neue Stelle sucht, sollte zuerst sich selbst kennen. Denn nur der, der sich selbst kennt, weis auch, welche Stellen wirklich passen. Arbeit besteht aus vielen Komponenten, dazu zahlen die Umgebung, Verantwortung und Kompetenzen, Menschen mit denen man sich beruflich justieren muss, und ganz wichtig, was bereitet einem Freude und was nervt.

Schizophrenia is a complex and debilitating mental disorder with strong heritability. Its pathogenesis involves immune dysregulation. Interleukin 15 and interleukin 15 receptor alpha(IL-15Rα) are classical immune molecules. They also help maintain normal brain function, leading to our hypothesis that IL-15Rα gene(IL- 15RA) variants contribute to the pathogenesis of schizophrenia. We determine whether the genetic variants of IL-15RA are associated with the development and progression of schizophrenia and whether IL-15RA single nucleotide polymorphism(SNP) plays a key role in downstream signaling transduction. We sequenced IL-15RA exon from 132 Chinese schizophrenic patients and identified a rare variant(rs528238821) in a patient diagnosed with catatonic schizophrenia and ankylosing spondylitis(AS). We overexpressed this missense variant in cells driven by pBI-CMV vector. The cells showed attenuated STAT3 phosphorylation in response to interleukin15. IL-15RA mutation is rare in schizophrenic patients but interfered with IL- 15Rα intracellular signal transduction. Given the similarity of symptoms of catatonic schizophrenia and the known phenotype of IL-15Rα knockout mice, gene variation might offer diagnostic value for sub-types of schizophrenia.

The current study examined child preference for presession therapeutic conditions. A 4-year-old female diagnosed with autism spectrum disorder (ASD) was exposed to three conditions in a concurrent-chains arrangement: presession pairing (PSP) prior to the onset of discrete-trial instruction (DTI), free play (FP) prior to DTI, or immediate onset of DTI. Initial link selections in the concurrent-chains arrangement suggested a relative preference for the PSP condition across multiple therapists. Negative vocalizations decreased across all conditions following implementation of the concurrent-chains arrangement with no differentiation between therapeutic conditions.

Click to launch & play an online audio visual presentation by Prof. Weihong Pan on Transport and delivery of neurotrophic peptides and proteins across the BBB, part of a collection of multimedia lectures.

The aim of this study was to determine the relationship between blood pressure (BP) variability and left ventricular (LV) mechanical function in untreated normal-weight, overweight, and obese hypertensive patients. This cross-sectional study included 144 untreated hypertensive study participants who underwent 24-h ambulatory BP monitoring and complete two (2DE) and three-dimensional echocardiography (3DE). All the patients were divided into three groups according to their BMI: normal-weight patients (BMI < 25 kg/m), overweight patients (25 ≤ BMI < 30 kg/m), and obese patients (BMI ≥ 30 kg/m). Daytime, night-time, and 24-h BP variability progressively increased from normal-weight, throughout overweight, to obese hypertensive study participants. 2DE and 3DE LV longitudinal, circumferential and radial strains, as well as 3DE area strain, were significantly lower in obese hypertensive patients than in normal-weight and overweight study participants. 3DE LV volumes indexed for BSA did not differ significantly among the three observed groups. Night-time and 24 h BP variability indices, more than daytime BP variability parameters, were associated with 2DE and 3DE longitudinal and circumferential strains independent of BMI, LV mass index, and average 24-h SBP and DBP values. BP variability and LV deformation are significantly affected by obesity in untreated hypertensive patients. BP variability is associated with 2DE and 3DE LV mechanics independently of main clinical and echocardiographic characteristics.

The water quality at the upstream and downstream of River Imeri was assessed with a view to determine the level of contamination of Cu, Pb, K, and Zn after observing that the river is contaminated with oil-sand. The results showed very strong correlations between the concentrations at the downstream and upstream. Cu with mean mass concentration of 0.083μgl-1was only detected at the downstream and Pb was not detected in the river. The mean mass concentrations of Zn at downstream and upstream were 0.573μgl-1 and 0.126μgl-1 respectively. The mean mass concentrations of K were 0.589μgl-1 and 0.345μgl-1 at downstream and upstream respectively which were comparable to the WHO limit values. The consumption of K either at upstream or downstream was lower than the reported value of 3700mg/day by WHO.

To test the hypothesis that astrocytic leptin signaling induces an overall potentiation of the neuronal response to leptin, we generated a new line of astrocyte-specific leptin receptor knockout (ALKO-Δ1) mice in which no leptin receptor is expressed in astrocytes. Corresponding to cell-specific Cre recombinase expression in hypothalamic astrocytes but not neurons, this new strain of ALKO mice had attenuated pSTAT3 signaling in the arcuate nucleus of the hypothalamus 30min after intracerebroventricular delivery of leptin. In response to high-fat diet for 2months, the ALKO mice showed a greater increase of percent fat and blood leptin concentration. This coincided with a mild reactive gliosis in the hypothalamus. Overall, the absence of leptin receptors in astrocytes attenuated hypothalamic pSTAT3 signaling, induced a mild reactive morphology, and promoted the development of diet-induced obesity. We conclude that leptin signaling in astrocytes is essential for the homeostasis of neuroendocrine regulation in obesity.

The yearly National Student Solar Spectrograph Competition (NSSSC) is Montana Space Grant Consortium's Education and Public Outreach (EP/O) Program for NASA's Interface Region Imaging Spectrograph (IRIS) mission. The NSSSC is designed to give schools with less aerospace activity such as Minority Serving Institutions and Community Colleges an opportunity for hands on real world research experience. The NSSSC provides students from across the country the opportunity to work as part of an undergraduate interdisciplinary team to design, build and test a ground based solar spectrograph. Over the course of nine months, teams come up with their own science goals and then build an instrument to collect data in support of their goals. Teams then travel to Bozeman, MT to demonstrate their instruments and present their results in a competitive science fair environment. This paper and poster will discuss the 2011-2012 competition along with results as well as provide information on the 2012 -2013 competition opportunities.

Barth syndrome (BTHS) is a mitochondrial myopathy characterized by reports of exercise intolerance. We sought to determine if 1) BTHS leads to abnormalities of skeletal muscle O(2) extraction/utilization and 2) exercise intolerance in BTHS is related to impaired O(2) extraction/utilization, impaired cardiac function, or both. Participants with BTHS (age: 17 ± 5 yr, n = 15) and control participants (age: 13 ± 4 yr, n = 9) underwent graded exercise testing on a cycle ergometer with continuous ECG and metabolic measurements. Echocardiography was performed at rest and at peak exercise. Near-infrared spectroscopy of the vastus lateralis muscle was continuously recorded for measurements of skeletal muscle O(2) extraction. Adjusting for age, peak O(2) consumption (16.5 ± 4.0 vs. 39.5 ± 12.3 ml·kg(-1)·min(-1), P < 0.001) and peak work rate (58 ± 19 vs. 166 ± 60 W, P < 0.001) were significantly lower in BTHS than control participants. The percent increase from rest to peak exercise in ejection fraction (BTHS: 3 ± 10 vs. control: 19 ± 4%, P < 0.01) was blunted in BTHS compared with control participants. The muscle tissue O(2) saturation change from rest to peak exercise was paradoxically opposite (BTHS: 8 ± 16 vs. control: -5 ± 9, P < 0.01), and the deoxyhemoglobin change was blunted (BTHS: 0 ± 12 vs. control: 10 ± 8, P < 0.09) in BTHS compared with control participants, indicating impaired skeletal muscle extraction in BTHS. In conclusion, severe exercise intolerance in BTHS is due to both cardiac and skeletal muscle impairments that are consistent with cardiac and skeletal mitochondrial myopathy. These findings provide further insight to the pathophysiology of BTHS.