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Increasing life span

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https://www.readbyqxmd.com/read/27903235/erythropoietin-enhances-the-cytotoxic-effect-of-hydrogen-peroxide-on-colon-cancer-cells
#1
Tankiewicz-Kwedlo Anna, Hermanowicz Justyna Magdalena, Surażynski Arkadiusz, Kwedlo Wojciech, Rożkiewicz Dariusz, Pawlak Krystyna, Domaniewski Tomasz, Pawlak Dariusz
BACKGROUND: Cancer patients treated with alkylating agents and radiotherapy are exposed to high level of reactive oxygen species (ROS) in tissues. ROS can involve superoxide free radicals, peroxynitrite, singlet oxygen, nitric oxide and hydrogen peroxide. It is well documented that increased exposure to oxygen through a high metabolic rate could lead to a shortened life span. Ionizing radiation, use of drugs and the development of cancer can lead to cancer-induced anemia. Recombinant human erythropoietin (Epo) supplementation is one of the methods for treating anemia...
November 15, 2016: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/27899109/challenges-for-strengthening-the-health-workforce-in-the-lao-people-s-democratic-republic-perspectives-from-key-stakeholders
#2
Yi Qian, Fei Yan, Wei Wang, Shayna Clancy, Kongsap Akkhavong, Manithong Vonglokham, Somphou Outhensackda, Truls Østbye
BACKGROUND: The Lao People's Democratic Republic is facing a critical shortage and maldistribution of health workers. Strengthening of the health workforce has been adopted as one of the five priorities of the National Health Sector Strategy (2013-2025). This study aims to identify, explore, and better understand the key challenges for strengthening the Laotian health workforce. METHODS: This study applied exploratory and descriptive qualitative methods and adapted a working life-span framework...
November 29, 2016: Human Resources for Health
https://www.readbyqxmd.com/read/27897016/open-data-for-discovery-science
#3
Philip R O Payne, Kun Huang, Nigam H Shah, Jessica Tenenbaum
The modern healthcare and life sciences ecosystem is moving towards an increasingly open and data-centric approach to discovery science. This evolving paradigm is predicated on a complex set of information needs related to our collective ability to share, discover, reuse, integrate, and analyze open biological, clinical, and population level data resources of varying composition, granularity, and syntactic or semantic consistency. Such an evolution is further impacted by a concomitant growth in the size of data sets that can and should be employed for both hypothesis discovery and testing...
2016: Pacific Symposium on Biocomputing
https://www.readbyqxmd.com/read/27895890/sex-and-age-related-differences-in-arterial-pressure-and-albuminuria-in-mice
#4
Giannie Barsha, Kate M Denton, Katrina M Mirabito Colafella
BACKGROUND: Animal models have become valuable experimental tools for understanding the pathophysiology and therapeutic interventions in cardiovascular disease. Yet to date, few studies document the age- and sex-related differences in arterial pressure, circadian rhythm, and renal function in normotensive mice under basal conditions, across the life span. We hypothesized that mice display similar sex- and age-related differences in arterial pressure and renal function to humans. METHODS: Mean arterial pressure (MAP) and circadian rhythm of arterial pressure were measured over 3 days via radiotelemetry, in 3- and 5-month-old (adult) and 14- and 18-month-old (aged) FVB/N and in 5-month-old (adult) C57BL/6 male and female normotensive mice...
2016: Biology of Sex Differences
https://www.readbyqxmd.com/read/27893005/transforming-head-and-neck-surgeon-into-thyroid-expert-the-2016-hayes-martin-lecture
#5
Ashok R Shaha
With the rapid rise in the incidence of thyroid cancer, the number of thyroidectomies has increased remarkably in the last 10 years. Thyroidectomy accounts for approximately 40% of the workload in head and neck fellowship. The decision making in thyroid surgery is quite complex, especially when patients present with recurrent or advanced thyroid cancer. The complications of thyroid surgery can be very serious in relation to quality of life. Some of these complications can be avoided with meticulous surgical technique...
November 17, 2016: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/27890943/recapitulation-of-acquired-immuno-deficiency-syndrome-associated-kaposi-s-sarcoma
#6
REVIEW
Balaji Govindan
Acquired immuno deficiency syndrome (AIDS) associated Kaposi's sarcoma (KS) is one of the clinical forms of KS. KS is caused by human herpes viruses 8 or KS associated herpes virus (KSHV). In India, till now, only 16 cases of AIDS associated KS was reported. Of all the clinical forms of KS, AIDS associated KS is distinct in many ways viz.; cutaneous manifestations commonly affects face and trunk rather than lower limbs, more mucosal lesions, rapidly progressive, and early systemic involvement. When human immunodeficiency virus (HIV) is co-infected with KSHV, in addition to the other pathogenic factors for the development of KS, HIV Tat protein promotes the proliferation of cytokine-activated endothelial cells and stimulates KS...
July 2016: Indian Journal of Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/27889051/the-trajectory-of-negative-mood-and-depressive-symptoms-over-two-decades
#7
Katherine E Campbell, Lorraine Dennerstein, Mark Tacey, Cassandra E Szoeke
OBJECTIVE: Research aimed at understanding the temporal characteristics of depressive symptoms and negative mood in an older female population is lacking, despite the relationship between the two factors being well established. The aim of this study was to examine the characteristics of negative mood scores and depressive symptom scores in a longitudinal sample of women transitioning from mid-life to late life. STUDY DESIGN: This study was a longitudinal assessment of variables drawn from an epidemiological prospective study of women's healthy ageing...
January 2017: Maturitas
https://www.readbyqxmd.com/read/27888692/mitochondrial-gsh-replenishment-as-a-potential-therapeutic-approach-for-niemann-pick-type-c-disease
#8
Sandra Torres, Nuria Matías, Anna Baulies, Susana Nuñez, Cristina Alarcon-Vila, Laura Martinez, Natalia Nuño, Anna Fernandez, Joan Caballeria, Thierry Levade, Alba Gonzalez-Franquesa, Pablo Garcia-Rovés, Elisa Balboa, Silvana Zanlungo, Gemma Fabrías, Josefina Casas, Carlos Enrich, Carmen Garcia-Ruiz, José C Fernández-Checa
Niemann Pick type C (NPC) disease is a progressive lysosomal storage disorder caused by mutations in genes encoding NPC1/NPC2 proteins, characterized by neurological defects, hepatosplenomegaly and premature death. While the primary biochemical feature of NPC disease is the intracellular accumulation of cholesterol and gangliosides, predominantly in endolysosomes, mitochondrial cholesterol accumulation has also been reported. As accumulation of cholesterol in mitochondria is known to impair the transport of GSH into mitochondria, resulting in mitochondrial GSH (mGSH) depletion, we investigated the impact of mGSH recovery in NPC disease...
November 20, 2016: Redox Biology
https://www.readbyqxmd.com/read/27886412/cowden-syndrome-serendipitous-diagnosis-in-patients-with-significant-breast-disease-case-series-and-literature-review
#9
Roisin M Heaney, Michael Farrell, Maurice Stokes, Tom Gorey, Dylan Murray
Cowden syndrome (CS) is a multi-system disease that carries an increased lifetime risk of developing certain cancers as well as benign neoplasms. The presence of features of CS in the general unaffected population results in difficulties in the recognition and diagnosis of this condition. Early diagnosis is essential to prevent the development of malignant neoplasms, yet despite the introduction of diagnostic criteria and risk calculators, accurate diagnosis remains a challenge. We identified three patients who presented to the symptomatic breast unit of a University Teaching Hospital over a period of 12 weeks who subsequently were diagnosed with CS...
November 25, 2016: Breast Journal
https://www.readbyqxmd.com/read/27884620/effect-of-dispersal-in-two-patch-prey-predator-system-with-positive-density-dependence-growth-of-preys
#10
Sourav Kumar Sasmal, Dibakar Ghosh
Prey-predator systems in patchy environment, connected through dispersal between patches is a very common phenomenon observed in nature, which have a significant impact in ecology, species persistence and extinction, etc. In the present paper, we consider a two patch prey-predator system where the patches are connected through dispersal between preys populations only. We consider positive density dependence growth for preys population. In addition, we consider the time scale difference (different life span) between preys and predator populations...
November 21, 2016: Bio Systems
https://www.readbyqxmd.com/read/27882857/learning-from-observation-feedback-and-intervention-in-linear-and-nonlinear-task-environments
#11
Maria P Henriksson, Tommy Enkvist
This multiple-cue judgment study investigates whether we can manipulate the judgment strategy and increase accuracy in linear and nonlinear cue-criterion environments just by changing the training mode. Three experiments show that accuracy in simple linear additive task environments are improved with feedback training and intervention training, while accuracy in complex multiplicative tasks are improved with observational training. The observed interaction effect suggests that the training mode invites different strategies that are adjusted as a function of experience to the demands from the underlying cue-criterion structure...
November 24, 2016: Quarterly Journal of Experimental Psychology: QJEP
https://www.readbyqxmd.com/read/27881134/low-dose-radiation-risks-for-women-surviving-the-a-bombs-in-japan-generalized-additive-model
#12
Greg Dropkin
BACKGROUND: Analyses of cancer mortality and incidence in Japanese A-bomb survivors have been used to estimate radiation risks, which are generally higher for women. Relative Risk (RR) is usually modelled as a linear function of dose. Extrapolation from data including high doses predicts small risks at low doses. Generalized Additive Models (GAMs) are flexible methods for modelling non-linear behaviour. METHODS: GAMs are applied to cancer incidence in female low dose subcohorts, using anonymous public data for the 1958 - 1998 Life Span Study, to test for linearity, explore interactions, adjust for the skewed dose distribution, examine significance below 100 mGy, and estimate risks at 10 mGy...
November 24, 2016: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/27875770/evaluation-of-permeable-pavement-responses-to-urban-surface-runoff
#13
Meysam Kamali, Madjid Delkash, Massoud Tajrishy
The construction of permeable pavement (PP) in sidewalks of urban areas is an alternative low impact development (LID) to control stormwater runoff volume and consequently decrease the discharge of pollutants in receiving water bodies. In this paper, some laboratory experiments were performed to evaluate the efficiency of a PP subjected to sediment loadings during its life span. Simple infiltration models were validated by the laboratory experiments to evaluate the trend and extend of PP infiltration capacity throughout the life of the pavement operation...
November 19, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27871116/glucocorticoid-signaling-and-bone-biology
#14
T Komori
Since glucocorticoids remain an effective therapeutic option for the treatment of many inflammatory and autoimmune diseases, glucocorticoid-induced osteoporosis is the most common form of secondary osteoporosis. Fractures may occur in as many as 30-50% of patients receiving chronic glucocorticoid therapy. Under physiological conditions, glucocorticoids are required for normal bone development due to their regulation of osteoblast differentiation, possibly via the Wnt/β-catenin pathway and TSC22D3. However, serum levels of endogenous corticosterone are elevated in aged mice and glucocorticoids exert negative effects on the survival of osteoblasts and osteocytes as well as angiogenesis...
November 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27870424/sex-dependent-differences-in-voluntary-physical-activity
#15
REVIEW
Cheryl S Rosenfeld
Numbers of overweight and obese individuals are increasing in the United States and globally, and, correspondingly, the associated health care costs are rising dramatically. More than one-third of children are currently considered obese with a predisposition to type 2 diabetes, and it is likely that their metabolic conditions will worsen with age. Physical inactivity has also risen to be the leading cause of many chronic, noncommunicable diseases (NCD). Children are more physically inactive now than they were in past decades, which may be due to intrinsic and extrinsic factors...
January 2, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27867890/bone-turnover-markers-emerging-tool-in-the-management-of-osteoporosis
#16
REVIEW
Sahana Shetty, Nitin Kapoor, Joseph Dian Bondu, Nihal Thomas, Thomas Vizhalil Paul
Bone is a dynamic tissue which undergoes constant remodeling throughout the life span. Bone turnover is balanced with coupling of bone formation and resorption at various rates leading to continuous remodeling of bone. A study of bone turnover markers (BTMs) provides an insight of the dynamics of bone turnover in many metabolic bone disorders. An increase in bone turnover seen with aging and pathological states such as osteoporosis leads to deterioration of bone microarchitecture and thus contributes to an increase in the risk of fracture independent of low bone mineral density (BMD)...
November 2016: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27867323/low-dose-rate-irradiation-for-1-hour-induces-protection-against-lethal-radiation-doses-but-does-not-affect-life-span-of-dba-2-mice
#17
Nina Frederike Jeppesen Edin, Čestmír Altaner, Veronika Altanerova, Peter Ebbesen, Erik O Pettersen
Prior findings showed that serum from DBA/2 mice that had been given whole-body irradiation for 1 hour at a low dose rate (LDR) of 30 cGy/h induced protection against radiation in reporter cells by a mechanism depending on transforming growth factor β3 and inducible nitric oxide synthase activity. In the present study, the effect of the 1 hour of LDR irradiation on the response of the preirradiated mice to a subsequent lethal dose and on the life span is examined. These DBA/2 mice were prime irradiated for 1 hour at 30 cGy/h...
October 2016: Dose-response: a Publication of International Hormesis Society
https://www.readbyqxmd.com/read/27864861/fight-or-flight-flight-increases-immune-gene-expression-but-does-not-help-to-fight-an-infection
#18
L Woestmann, J Kvist, M Saastamoinen
Flight represents a key trait in most insects, being energetically extremely demanding, yet often necessary for foraging and reproduction. Additionally, dispersal via flight is especially important for species living in fragmented landscapes. Even though, based on life-history theory, a negative relationship may be expected between flight and immunity, a number of previous studies have indicated flight to induce an increased immune response. In this study, we assessed whether induced immunity (i.e. immune gene expression) in response to 15-min forced flight treatment impacts individual survival of bacterial infection in the Glanville fritillary butterfly (Melitaea cinxia)...
November 7, 2016: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/27861661/retrospective-cohort-study-of-4-591-straumann-implants-placed-in-2-060-patients-in-private-practice-with-up-to-10-year-follow-up-the-relationship-between-crestal-bone-level-and-soft-tissue-condition
#19
David French, David L Cochran, Ronen Ofec
PURPOSE: The purpose of this report is to describe the crestal bone level (CBL) around implants of various designs, describe the peri-implant soft tissue condition, and evaluate the relationship between the two over time. MATERIALS AND METHODS: This retrospective cohort study reports on 2,060 patients with 4,591 implants evaluated after 3 months; 1, 3, 5, and 7 years; and up to 10 years. Periapical radiographs were used to evaluate changes in CBL. The peri-implant soft tissue was evaluated using a modified Bleeding Index termed the Implant Mucosal Index (IMI) where: 0 = no bleeding; 1 = minimal, single-point bleeding; 2 = moderate, multipoint bleeding; 3 = profuse, multipoint bleeding; and 4 = suppuration...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27861586/plastic-responses-contribute-to-explaining-altitudinal-and-temporal-variation-in-potential-flower-longevity-in-high-andean-rhodolirion-montanum
#20
Diego Andrés Pacheco, Leah S Dudley, Josefina Cabezas, Lohengrin A Cavieres, Mary T K Arroyo
The tendency for flower longevity to increase with altitude is believed by many alpine ecologists to play an important role in compensating for low pollination rates at high altitudes due to cold and variable weather conditions. However, current studies documenting an altitudinal increase in flower longevity in the alpine habitat derive principally from studies on open-pollinated flowers where lower pollinator visitation rates at higher altitudes will tend to lead to flower senescence later in the life-span of a flower in comparison with lower altitudes, and thus could confound the real altitudinal pattern in a species´ potential flower longevity...
2016: PloS One
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