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Publication
Journal: Journal of Contaminant Hydrology
June/13/2007
Abstract
The long-term mobility of actinides in groundwaters is important for siting nuclear waste facilities and managing waste-rock piles at uranium mines. Dissolved organic carbon (DOC) may influence the mobility of uranium, but few field-based studies have been undertaken to examine this in typical groundwaters. In addition, few techniques are available to isolate DOC and directly quantify the metals complexed to it. Determination of U-organic matter association constants from analysis of field-collected samples <em>compliments</em> laboratory measurements, and these constants are needed for accurate transport calculations. The partitioning of U to DOC in a clay-rich aquitard was investigated in 10 groundwater samples collected between 2 and 30 m depths at one test site. A positive correlation was observed between the DOC (4-132 mg/L) and U concentrations (20-603 microg/L). The association of U and DOC was examined directly using on-line coupling of Asymmetrical Flow Field-Flow Fractionation (AsFlFFF) with UV absorbance (UVA) and inductively coupled plasma-mass spectrometer (ICP-MS) detectors. This method has the advantages of utilizing very small sample volumes (20-50 microL) as well as giving molecular weight information on U-organic matter complexes. AsFlFFF-UVA results showed that 47-98% of the DOC (4-136 mg C/L) was recovered in the AsFlFFF analysis, of which 25-64% occurred in the resolvable peak. This peak corresponded to a weight-average molecular weight of about 900-1400 Daltons (Da). In all cases, AsFlFFF-ICP-MS suggested that<or=2% of the U, likely present as U(VI), was complexed with the DOC. This result was in good agreement with the U speciation modeling performed on the sample taken from the 2.3 m depth, which predicted approximately 3% DOC-complexed U. This good agreement suggests that the AsFlFFF-ICP-MS method may be very useful for determining U-organic matter association in small volume samples. Because the pH (7.0-8.1) and carbonate concentrations of these waters are typical of many groundwaters, these data suggested that facilitated transport of U by DOC may be limited in its importance in many groundwater systems.
Publication
Journal: Current Computer-Aided Drug Design
August/28/2014
Abstract
Transporters of the monoamines serotonin, dopamine, and norepinephrine are plasma membrane proteins belonging to the neurotransmitter sodium symporter family (NSS). Monoamine transporters (MATs) by facilitating reuptake of neurotransmitters from the synapse into the presynaptic nerve terminal, regulate neurotransmitter chemical signaling and maintain homeostasis. MATs are targets for several psychostimulants such as cocaine and amphetamine; and also for drugs treating several psychiatric disorders such as depression, attention deficit hyperactivity disorder, Parkinson's disease, and schizophrenia. Since, currently available treatment has several limitations and side effects, novel treatment is highly desired. Efforts to develop better treatment have been hampered by the lack of crystal structures for MATs. However, leucine transporter (LeuTAa), a bacterial protein from Aquifex aeolicus, belonging to the same NSS family as MATs has recently been crystallized. LeuTAa is used as a template to develop homology models of MATs, which facilitates understanding of the structure, function and pharmacology of MATs. Experimental methods for drug discovery demand a significant amount of time, effort and money. Efficient utilization of computational techniques hastens the process of drug discovery and also significantly reduces the cost. Assessing the binding affinity of drugs to the receptors is a key aspect of drug design. Free energy calculations compliment the experiment by quantitatively assessing the affinity of ligands to receptors. These methods are highly beneficial in the lead identification and optimization stages of rational drug design. We review the currently available free energy methods to treat protein-ligand interactions along with several free energy studies performed on MATs.
Publication
Journal: Society of Reproduction and Fertility supplement
February/20/2007
Abstract
The occurrence of puberty in the female is due to the interplay of central and peripheral mechanisms in which the hypothalamic-pituitary-ovarian axis regulates growth and gonadal function, as well as adipocyte hormone secretion. Hypothalamic GnRH mRNA expression increased at 3.5 months of age and declined by 6 months of age. Concomitant with the age related reduction in the oestrogen negative feedback on LH secretion was a decline in hypothalamic oestrogen receptor-alpha (ERalpha) expression and increased expression of repressor of ER activity gene (REA) at 210 days of age. Hypothalamic proopiomelanocortin expression increased at 6 months of age followed by increased expression of progesterone receptor (PR) membrane compliment-1 and steroid membrane binding protein gene at 210 days of age. This represents development of the endogenous opioid peptide-progesterone dependent LH inhibitory pathway. Adipose tissue leptin and insulin like growth factor-I (IGF-I) gene expression increased with age and adiposity. Pituitary transcription factors, steroidogenic factor 1 (SF1) and Lhx3, and LHbeta and FSHbeta gene expression increased with age. These results identify key hypothalamic and pituitary genes associated with changes in LH secretion and growth during pubertal development and adipose tissue genes and secreted proteins related to maturation of the neuroendocrine axis and puberty.
Publication
Journal: Scientific Reports
May/26/2017
Abstract
Genetic and proteomic analysis of human tumor samples can provide an important compliment to information obtained from model systems. Here we examined protein and gene expression from the Cancer Genome and Proteome Atlases (TCGA and TCPA) to characterize proteins and protein-coding genes that are selectively upregulated in KRAS-mutant lung adenocarcinomas. Phosphoprotein activation of several MAPK signaling components was considerably stronger in KRAS-mutants than any other group of tumors, even those with activating mutations in receptor tyrosine kinases (RTKs) and BRAF. Co-occurring mutations in KRAS-mutants were associated with differential activation of PDK1 and PKC-alpha. Genes showing strong activation in RNA-seq data included negative regulators of RTK/RAF/MAPK signaling along with potential oncogenic effectors including activators of Rac and Rho proteins and the receptor protein-tyrosine phosphatase genes PTPRM and PTPRE. These results corroborate RAF/MAPK signaling as an important therapeutic target in KRAS-mutant lung adenocarcinomas and pinpoint new potential targets.
Publication
Journal: Nippon koshu eisei zasshi] Japanese journal of public health
February/24/2016
Abstract
OBJECTIVE
This study examined the possibility and necessity for expansion and diffusion of a new employment support facility for older job seekers in metropolitan areas based on health and welfare measures. This longitudinal study assessed questionnaire responses from older job seekers at a new facility established in Ota ward in the Tokyo metropolitan area as a compliment to the conventional system comprised of Hello Work and the Silver Human Resources Center.
METHODS
We offered questionnaires to job seekers at their first facility visit and asked them to return them by mail (baseline survey). Follow-up surveys of the same respondents were conducted after 2, 4, 8, and 12 weeks, with questions about demographics, personal status, social activities, mental health, and job search status. The surveys were administered from January 2013 to March 2014.
RESULTS
We obtained 128 responses (average respondent age: 63.8 years) from 180 baseline survey questionnaires. The respondents included 82 males and 46 females. The response rates were over 90% for all follow-up surveys. Among respondents, 71.4% had less than a senior high school level of education. The average annual household income was less than 3 million yen and less than 1 million yen for 68.0% and 16.0% of the participants, respectively. The life circumstances were "hard" or "very hard" for 56.3% of respondents. Among respondents, 78.9% indicated that they were seeking employment for economic reasons. Women and those over 65 years of age were more likely to search for jobs for their well-being than men and respondents less than 65 years of age. The majority of respondents indicated that they wanted to make use of their abilities or experience and many hoped to work as garbage collectors, cooks, or apartment caretakers.
CONCLUSIONS
We found that the main objective of older job seekers living at this facility was economic acquisition. Men and those less than 65 years of age were at particular risk for economic distress, poor mental health, and were more likely to be searching for regular employment. A relatively higher proportion of women and respondents over 65 years of age were seeking jobs for their well-being; a need for social relationships that may be more pronounced among women in this study population.
Publication
Journal: Journal of the American Chemical Society
August/23/2011
Abstract
The synthesis, photochemical and electrochemical properties, and electronic structures of a series of star-shaped ladder-type oligophenylenes Sn (n = 7, 10, 13, 16, 19, and 22), including one multibranched case S19mb, are reported and compared with the linear para-phenylene ladders Rn (n = 2-5 and 8) and the stepladder analogues SFn (n = 10, 16, and 22). The n value refers to the number of π-conjugated phenylene rings. Functionalized isotruxenes are the key synthetic building blocks, and S22 is the largest monodispersed ladder-type oligophenylene known to date. The Sn systems possess the structural rigidity of Rn and the ortho-para phenylene connectivity of SFn. Consequently, Sn represents the first class of branched chromophores with fully two-dimensional conjugation in both ground- and excited-state configurations. Evidences include the excellent linear correlations for the optical 0-0 energies or the first oxidation potentials of Sn and Rn against the reciprocal of their n values, delocalized HOMO and LUMO based on density functional theory calculations, and molecule-like fluorescence anisotropy. The resulting model of effective conjugation plane (ECP) for the two-dimensional π-conjugated systems compliments the concept of effective conjugation length (ECL) for one-dimensional oligomeric systems. Other implications of the observed structure-property relationships are also included.
Publication
Journal: Aging clinical and experimental research
May/24/2006
Abstract
Endothelial dysfunction complicates hypertension and is a precursor of atherosclerosis. It is characterized by a reduction in the bioavailability of vasodilators, particularly nitric oxide (NO), and an increase in the activity of vasoconstrictors, including angiotensin (Ang) II and reactive oxygen species (ROS). To the extent that cardiovascular disease is characterized by an imbalance between NO, Ang II, and ROS in the endothelium, modulating the activity of these vasoactive substances has important implications for both the treatment of hypertension and the prevention of atherosclerosis and end organ damage. Accumulating experimental and clinical data suggest that a multitherapy antihypertensive regimen that includes inhibitors of the renin-angiotensin system and calcium channel antagonists may further reduce cardiovascular risk via greater improvements in endothelial function, in addition to the well-documented blood pressure lowering effects. Experimental studies in small and large coronary arteries and in aorta indicate that the calcium channel blocker, amlodipine, stimulates NO generation. These drug-specific actions beyond blood pressure lowering may exert cardio- and vasculoprotective effects by preventing the maladaptive changes that accompany hypertension, namely endothelial dysfunction, upregulation of proinflammatory molecules, vascular smooth muscle cell (VSMC) growth and migration, and increased extracellular matrix deposition, mechanisms that lead to atherosclerotic cardiovascular disease. These effects compliment those of other classes of antihypertensive agents and also 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitors (statins), which have also been demonstrated to ameliorate the damaging consequences of endothelial dysfunction and thus reduce the incidence of cardiovascular events.
Publication
Journal: Prostate
April/9/2012
Abstract
BACKGROUND
Genome-wide association studies of prostate cancer have identified single nucleotide polymorphism (SNP) markers in a region of chromosome 11q13.3 in men of European decent. A fine-mapping analysis with tag SNPs in the cancer genetic markers of susceptibility study identified three independent loci, marked by rs10896438, rs12793759, and rs10896449. This study further annotates common and uncommon variation across this region.
METHODS
A next generation resequence analysis of a 122.9-kb region of 11q13.3(68,642,755-68,765,690) was conducted in 78 unrelated individuals of European background,1 CEPH trio, and 1 YRI trio.
RESULTS
In total, 644 polymorphic loci were identified by our sequence analysis. Of these,166 variants—118 SNPs and 48 insertion-deletion polymorphisms (indels)—were novel,namely not present in the 1000 Genomes or International HapMap Projects. We identified 22,25, 6, and 4 variants strongly correlated (r2 ≥ 0.8) with rs10896438, rs10896449, rs12793759,and rs11228565, respectively. HapMap SNPs were in linkage disequilibrium (r2 ≥ 0.8) with 48%, 69%, 14%, and 60% of SNPs marking bins by rs10896438, rs10896449, rs12793759, and rs11228565, respectively.
CONCLUSIONS
Our next generation resequence analysis compliments publicly available datasets of European descent (HapMap, build 28 and 1000 Genome, Pilot 1, October 2010),underscoring the value of targeted resequence analysis prior to initiating functional studies based on public databases alone. Increasing the number of common variants enables investigators to better prioritize variants for functional studies designed to uncover the biological basis of the direct association(s) in the region.
Publication
Journal: NeuroToxicology
January/29/2004
Abstract
The proteome is the protein compliment of the genome and is the result of genetic expression, ribosomal synthesis and proteolytic degradation. Proteins participate in most major cell processes and their function is highly regulated by post-translational modifications such as phosphorylation and glycosylation. As a result, neurotoxicant-induced changes in protein levels, function or regulation could have a negative impact on neuronal viability. At the molecular level, direct oxidative or covalent modifications of individual proteins by various chemicals or drugs is likely to lead to perturbation of tertiary structure and a loss of function. The proteome and the functional determinants of its individual protein components are, therefore, likely targets of neurotoxicant action and resulting characteristic disruptions could be critically involved in corresponding mechanisms of neurotoxicity. Clearly, investigating changes in the proteome can provide important clues for deciphering mechanisms of toxicant action and, therefore, proteomics, the study of the proteome, is currently, and will likely remain, a significant experimental approach for mechanistic research in neurotoxicology. The purpose of this review is to discuss proteomics as a tool for neurotoxicological investigations. A variety of classic proteomic techniques (e.g. liquid chromatography (LC)/tandem mass spectroscopy, two-dimensional gel image analysis) as well as more recently developed approaches (e.g. two-hybrid systems, antibody arrays, protein chips, isotope-coded affinity tags, ICAT) are available to determine protein levels, identify components of multiprotein complexes and to detect post-translational changes. Proteomics, therefore, offers a comprehensive overview of cell proteins, and in the case of neurotoxicant exposure, can provide quantitative data regarding changes in corresponding expression levels and/or post-translational modifications that might be associated with neuron injury.
Publication
Journal: Journal of Biomedical Materials Research
March/7/2002
Abstract
The generation of metal particles from prosthetic joints has been an evolving problem in orthopedics. Numerous factors have been involved including cells, metals, and responding cytokines, but determining roles of these factors or cascades of factors has been elusive. This laboratory has published threshold levels for commercially pure titanium (CpTi), which led to cell necrosis, but noted that cell viability differed among donor patients. To compliment the previous work we examined two other metals, Tantalum (Ta) and cobalt-chrome (CoCr), while making comparative measurements in these different donor patients. Retrieved human fibroblasts (superior medial plica) were cultured in a standard manner and exposed to various dosages of the three metals. Cell counts and interleukin (IL) 6 were used as dependent variables within a three-way analysis of variance. The data show that fibroblast necrosis was significantly affected by both type and mass of metal, with each metal having a distinct threshold (CpTi most necrotic, followed by Ta and CoCr). The cell counts and IL-6 at control levels varied significantly among all three donors. However, the response to the metals and dosages did not differ among tissue donors. Thus, although each patient had a different starting value for cell counts and IL-6, they responded to the metal particles in the same proportionate manner.
Publication
Journal: Social Science and Medicine
August/4/2011
Abstract
Cultural explanations of black suicide have focused on the US and stressed religiosity as a protective factor. This paper adds to this literature by (1) expanding the analysis of the impact of religiosity on black suicide to 10 nations, and (2) assessing the extent to which a broader cultural construct (self expressionism) affects black suicide acceptability. Data are from Wave 4 of the World Values Surveys 1991-2001 and refer to 3580 black males nested in ten countries. A hierarchical linear regression model determined that religiosity predicted black suicide acceptability across ten nations. Self expressionism was positively associated with individual level suicide acceptability. Further, a cross-level interaction was found wherein individual level and societal level self expressionism combined to affect suicide acceptability. The variability in suicide acceptability among black males is predicted, in part, by both individual and group levels of adherence to values contained in a major cultural axis of nations: self expressionism. These new found associations compliment the impact of a standard predictor, religiosity, on suicide acceptability.
Publication
Journal: Respiration physiology
June/4/1997
Abstract
In vitro preparations for studying the neural control of respiration consisting of brainstem and spinal cord regions isolated from the newborn (PO-P1) precocial rodent, Acomys cahirinus (spiny mouse) are described. Spiny mice have a longer gestation period (39 days) than laboratory rats (22 days) and mice (20 days) and thus are born in a considerably more mature state. We sought to determine if in vitro preparations isolated from spiny mice would spontaneously generate a respiratory motor pattern and thus offer a more mature in vitro model than previously established altricial rodent models. Brain stem-spinal cords isolated from newborn spiny mice, unlike comparable Sprague-Dawley preparations, did not generate a sustained respiratory rhythm. However, spiny mice medullary slice preparations consisting of respiratory rhythm centres generated a stable spontaneous respiratory rhythm. Moreover, spiny mice and Sprague-Dawley medullary preparations responded in a similar fashion to excitatory amino acid, glycine, TRH and, mu-opioid receptor agonists and antagonists. Thus, considering the extended period of fetal development and the maturity of the spiny mouse at birth, medullary slice preparations isolated from this precocial rodent will compliment altricial models for the study of developmental and general neuronal mechanisms underlying respiratory control.
Publication
Journal: Journal of dental hygiene : JDH / American Dental Hygienists' Association
February/24/2008
Abstract
Computer Mediated Communication (CMC) can be used as an effective tool for student communication and collaboration. First-year, first-semester dental hygiene students self-selected groups to develop dental hygiene process of care treatment plans, written reports, and oral case presentations based on assigned clinical cases. In consultation with the University of Michigan (UM) Digital Media Commons Collaborative Technologies Teams, CMC options were identified. Two chat rooms were established within the UM's Course Management System (CTools) to provide opportunities for synchronous (simultaneous, real-time) communication. One course blog site and 8 case blog sites were developed to provide students and instructors with electronic asynchronous (nonsimultaneous) communication formats. The purpose of this study was to evaluate the effectiveness of these technologies during group case study projects. CMC has the potential to provide an effective means of collaboration and communication when the technologies align with the purpose of the project and compliment the dynamics of student groups.
Publication
Journal: American Journal of Physiology - Heart and Circulatory Physiology
August/2/2018
Abstract
Skeletal muscle is the largest and most important site of capillary-tissue exchange, especially during high-energy demand tasks such as exercise; however, information regarding the role of the microcirculation in maintaining skeletal muscle health is limited. Changes in microcirculatory function, as observed with aging, chronic and cardiovascular diseases, as well as exercise, likely precede any alterations which arise in larger vessels, although further investigation into these changes is required. One of the main barriers to addressing this knowledge gap is the lack of methodologies for quantifying microvascular function in vivo, the utilization of valid and non-invasive quantification methods will allow the dynamic evaluation of microvascular flow during periods of clinical relevance such as during increased demand for flow (exercise) or decreased (disuse). Contrast enhanced ultrasound (CEUS) is a promising, non-invasive technique, which has been used for diagnostic medicine, and more recently as a complementary research modality to investigate the response of the microcirculation in insulin resistance, diabetes and aging. To improve the reproducibility of these measurements, our lab has optimized the quantification protocol associated with a bolus injection of the contrast agent for research purposes. This brief report outlines the assessment of microvascular flow using the raw time-intensity curve incorporated into gamma variate response modelling. CEUS could be used to compliment any macrovascular assessments to capture a more complete picture of the aging vasculature, and the modified methods presented here provide a template for the general analysis of CEUS within a research setting.
Publication
Journal: International Journal of Biological Sciences
June/11/2019
Abstract
Having markers feasible for breast cancer subtyping, especially for triple negative breast cancer identification is crucial for improving the treatment outcome of such cancers. Here we explore the role of FOXA1 in characterizing triple negative breast cancers and the driving mechanisms. Through in vitro examination of the expression pattern at both transcriptional and translational levels, patient relapse-free survival analysis, immunohistochemistry staining and prediction power assessment using clinical samples, as well as functional studies, we systematically compared the role of FOXA1 in identifying triple negative and luminal type of breast cancers and explored the mechanisms driving such functionalities. We report that FOXA1 under-expression can lead to increased malignancy and cancer stemness, and is a subtyping marker identifying triple negative breast cancers rather than the luminal subtype by transcriptionally suppressing the expression of SOD2 and IL6. We are the first to systematically address the significance of FOXA1 in triple negative breast cancer identification as a biomarker and elucidate the mechanism at the molecular level, through a sequential bioinformatics analysis and experimental validations both in vitro and in clinics. Our discoveries compliment the current biomarker modalities once verified using larger clinical cohorts and improve the precision on characterizing breast cancer heterogeneity.
Publication
Journal: American Journal of Community Psychology
September/10/1991
Abstract
Reaction to the intervention paper by Heller et al. (1990) places their work into a larger framework of social support interventions to make explicit the assumptions underlying the project. It is suggested that the intervention was constrained by the experimental design of the evaluation research and overlooked important features in the process of relationship development among dyads. In developing interventions designed to impact personal relationships, it is recommended that community psychologists (a) consider the context in which personal relationships are formed, maintained, and terminated; (b) use the power of their scientific inquiry to create, strengthen, or legitimize new social roles for people who are disenfranchised; (c) promote the use and legitimacy of research methods that compliment rather than dictate the nature of interventions.
Authors
Publication
Journal: Frontiers in Human Neuroscience
November/19/2015
Abstract
Diffusion tensor imaging (DTI) is a powerful MRI technique that can be used to estimate both the microstructural integrity and the trajectories of white matter pathways throughout the central nervous system. This fiber tracking (aka, "tractography") approach is often carried out using anatomically-defined seed points to identify white matter tracts that pass through one or more structures, but can also be performed using functionally-defined regions of interest (ROIs) that have been determined using functional MRI (fMRI) or other methods. In this study, we performed fMRI-guided DTI tractography between all of the previously defined nodes within each of six common resting-state brain networks, including the: dorsal Default Mode Network (dDMN), ventral Default Mode Network (vDMN), left Executive Control Network (lECN), right Executive Control Network (rECN), anterior Salience Network (aSN), and posterior Salience Network (pSN). By normalizing the data from 32 healthy control subjects to a standard template-using high-dimensional, non-linear warping methods-we were able to create probabilistic white matter atlases for each tract in stereotaxic coordinates. By investigating all 198 ROI-to-ROI combinations within the aforementioned resting-state networks (for a total of 6336 independent DTI tractography analyses), the resulting probabilistic atlases represent a comprehensive cohort of functionally-defined white matter regions that can be used in future brain imaging studies to: (1) ascribe DTI or other white matter changes to particular functional brain networks, and (2) compliment resting state fMRI or other functional connectivity analyses.
Publication
Journal: Cureus
October/20/2015
Abstract
Neurolymphomatosis (NL) is a rare condition associated with lymphomas in which various structures of the nervous system are infiltrated by malignant lymphocytes. Rarely, it may be the presenting feature of recurrence of lymphoma otherwise deemed to be in remission. It is crucial, as is the case with all types of nodal or visceral involvement of lymphoma, to identify the disease early and initiate treatment with chemotherapy and/or radiation therapy. Positron emission tomography-computed tomography (PET-CT) has been shown to be a sensitive modality for staging, restaging, biopsy guidance, therapy response assessment, and surveillance for recurrence of lymphoma. Magnetic resonance imaging (MRI) is another useful imaging modality, which, along with PET/CT, compliment cerebrospinal spinal fluid (CSF) cytology and electromyography (EMG) in the diagnosis of NL. Performing nerve biopsies to confirm neurolymphomatosis can be challenging and with associated morbidity. The case presented herein illustrates the practical usefulness of these tests in detecting NL as a heralding feature of lymphoma recurrence, especially in the absence of histopathologic correlation.
Publication
Journal: Synapse
November/12/2018
Abstract
Parallel fiber synapses in the cerebellum express a wide range of presynaptic receptors. However, presynaptic receptor expression at individual parallel fiber synapses is quite heterogeneous, suggesting physiological mechanisms regulate presynaptic receptor expression. We investigated changes in presynaptic GABAB receptors at parallel fiber-stellate cell synapses in acute cerebellar slices from juvenile mice. GABAB receptor-mediated inhibition of excitatory postsynaptic currents (EPSCs) is remarkably diverse at these synapses, with transmitter release at some synapses inhibited by >50% and little or no inhibition at others. GABAB receptor-mediated inhibition was significantly reduced following 4 Hz parallel fiber stimulation but not after stimulation at other frequencies. The reduction in GABAB receptor-mediated inhibition was replicated by bath application of forskolin and blocked by application of a PKA inhibitor, suggesting activation of adenylyl cyclase and PKA are required. Immunolabeling for an extracellular domain of the GABAB2 subunit revealed reduced surface expression in the molecular layer after exposure to forskolin. GABAB receptor-mediated inhibition of action potential evoked calcium transients in parallel fiber varicosities was also reduced following bath application of forskolin, confirming presynaptic receptors are responsible for the reduced EPSC inhibition. These data demonstrate that presynaptic GABAB receptor expression can be a plastic property of synapses, which may compliment other forms of synaptic plasticity. This opens the door to novel forms of receptor plasticity previously confined primarily to postsynaptic receptors.
Publication
Journal: International Journal of Food Science
February/22/2016
Abstract
Levels of trace metals and essential minerals in selected fruit juice samples purchased from Minna were determined using atomic absorption spectrophotometer (AAS) and Flame photometer. From the obtained result, Cu, Fe, Mn, Na, and Zn were present in all the samples, while Cd, Pb, and Cr were not detectable in all the samples. Concentrations of K range between 1.31 ± 0.10 and 41.20 ± 0.10 mg/100 mL, Na between 15.47 ± 0.15 and 3.50 ± 0.20 mg/100 mL, Mn between Nd and 0.27 ± 0.08 mg/100 mL, Fe between Nd and 0.90 ± 0.05 mg/100 mL, Cu between Nd-0.60 ± 0.00 mg/100 mL, and Zn between Nd-0.09 ± 0.01 mg/100 mL, respectively. The trace metal levels in all the samples were within permissible limit as recommended by WHO for edible foods and drinks and could therefore be taken to compliment the deficiency of these essential minerals from other food sources.
Publication
Journal: JOP : Journal of the pancreas
May/29/2008
Abstract
BACKGROUND
Appropriate surgical exploration and resection of pancreatic carcinoma depends on accurate preoperative evaluation.
OBJECTIVE
Determine the accuracy of endoscopic ultrasound in predicting the need for surgical exploration in patients with solid pancreatic masses deemed by computer tomography to be resectable without venous grafting (absence of distant metastatic disease or major vascular involvement).
METHODS
All patients between March 2000 and November 2003 with focal pancreatic mass lesions deemed to be surgically resectable by computer tomography. Forty-nine patients participated (29 males, 20 females; age range: 40-86 years).
METHODS
Preoperative linear-array endoscopic ultrasound.
METHODS
Surgical pathology compared to computer tomography and endoscopic ultrasound results.
RESULTS
Out of the 49 patients, 33 (67.3%) had pancreatic neoplasms and 16 (32.7%) had chronic pancreatitis. Endoscopic ultrasound correctly diagnosed all 16 patients with chronic pancreatitis. Endoscopic ultrasound correctly identified 18 (54.5%) of those with neoplasms as having unresectable disease while 6 (18.2%) patients were appropriately identified as resectable by endoscopic ultrasound. The remaining 9 patients (27.3%) were deemed resectable by endoscopic ultrasound, but were unresectable at the time of surgery. None of the patients were falsely designated as unresectable by endoscopic ultrasound.
CONCLUSIONS
Endoscopic ultrasound is an important compliment to computed tomography in predicting resectability and in avoiding nontherapeutic laparotomy of solid pancreatic neoplasms. Moreover, endoscopic ultrasound classification did not discourage surgery of resectable pancreatic masses.
Publication
Journal: Gastroenterology Clinics of North America
January/27/2003
Abstract
Epigenetic changes play an important role in the development and progression of colorectal cancer. The best characterized of these changes is the promoter region methylation of CpG islands of genes that play key roles in this disease. These changes compliment and lead to genetic changes that are well established as central to colorectal cancer progression. They may also prove useful in molecular detection approaches.
Publication
Journal: International Dental Journal
February/17/1998
Abstract
The eruption pattern of third molar amongst 1071 rural Nigerians (523 males and 548 females) aged 11-21 years was assessed. The earliest age at which the third molar erupted for males and females was 14 and 13 years respectively with females significantly ahead of males (P < 0.01). A full compliment of erupted third molars was recorded at age 14 years in 1.1 per cent of the population. However, the mean age for the eruption of 1, 2, or 3 and all third molars were 16.58 and 17.50 years respectively. Whilst third molar-eruption was significantly earlier in the mandible, no right-left side differences were found. Problems often associated with the erupting third molars are likely to be seen earlier in young rural Nigerians than in the western countries.
Publication
Journal: Research Involvement and Engagement
November/12/2018
Abstract
UNASSIGNED
Many young adults with type 1 diabetes struggle with the day-to-day management of their condition. They often find it difficult to find the time to attend their clinic appointments and to meet with their diabetes healthcare team. Young adults living with type 1 diabetes are not routinely involved in research that may help improve health services other than being invited to take part in studies as research participants. A 3-day international conference was held in Galway in June 2016 called "Strength In Numbers: Teaming up to improve the health of young adults with type 1 diabetes". It aimed to bring together people from a broad variety of backgrounds with an interest in young adults with type 1 diabetes. Young people with type 1 diabetes came together with healthcare professionals, researchers, software developers and policy makers to come up with and agree on a new approach for engaging young adults with type 1 diabetes with their health services and to improve how they manage their diabetes.The people involved in the conference aimed to reach agreement (consensus) on a fixed set of outcome measures called a core outcome set (COS) that the group would recommend future studies involving young adults with type 1 diabetes to use, to suggest a new approach (intervention) for providing health services to young adults with type 1 diabetes, and to come up with health technology ideas that could help deliver the new intervention. Over the 3 days, this diverse international group of people that included young adults living with type 1 diabetes, agreed on a COS, 3 key parts of a new intervention and 1 possible health technology idea that could help with how the overall intervention could be delivered.Involving young adults living with type 1 diabetes in a 3-day conference along with other key groups is an effective method for coming up with a new approach to improve health services for young adults with type 1 diabetes and better support their self-management.
UNASSIGNED
Background A 3-day international consensus meeting was hosted by the D1 Now study team in Galway on June 22-24, 2016 called "Strength In Numbers: Teaming up to improve the health of young adults with type 1 diabetes". The aim of the meeting was to bring together young adults with type 1 diabetes, healthcare providers, policy makers and researchers to reach a consensus on strategies to improve engagement, self-management and ultimately outcomes for young adults living with type 1 diabetes. Methods This diverse stakeholder group participated in the meeting to reach consensus on (i) a core outcome set (COS) to be used in future intervention studies involving young adults with type 1 diabetes, (ii) new strategies for delivering health services to young adults and (iii) potential digital health solutions that could be incorporated into a future intervention. Results A COS of 8 outcomes and 3 key intervention components that aim to improve engagement between young adults with type 1 diabetes and service providers were identified. A digital health solution that could potentially compliment the intervention components was proposed. Conclusion The outputs from the 3-day consensus conference, that held patient and public involvement at its core, will help the research team further develop and test the D1 Now intervention for young adults with type 1 diabetes in a pilot and feasibility study and ultimately in a definitive trial. The conference represents a good example of knowledge exchange among different stakeholders for health research and service improvement.
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