by M Wehming  , A Briem-Richter  , R Ganschow  , F Brinkert  , B Winkler  , L Fischer  and Enke Grabhorn

Received: 07 June 2020;  Published: 25 January 2021;  doi: 10.21926/obm.transplant.2101135

Some malignancies such as hepatoblastoma may be an indication for liver transplantation (LT) or some, for example, post-transplant lymphoproliferative disease (PTLD) may develop after successful LT. An immunosuppressive therapy after LT can promote the recurrence of the primary malignancy. The mammalian target-of-rapamycin inhibitors (mTORi) are immunosuppressive agents with anti-tumor properties. We examined the impact of everolimus (EVL) together with calcineurin inhibitors on allograft outcome and patient surviv [...]

by Sonal Mishra  , Neha Kumari  , Varsha K. Singh  and Rajeshwar P Sinha

Received: 18 January 2023;  Published: 03 August 2023;  doi: 10.21926/aeer.2303041

Cyanobacteria have great potential as a platform for biofuel production because of their fast growth, ability to fix CO2 gas, and genetic tractability. They also preserve the sustainability of an ecosystem without harming the environment. High-performance biofuels made from cyanobacteria can be utilized as a base for the production of green energy. Although a lot of studies have been conducted where plants and crops are used as the source of energy, cyanobacteria have been reported to have a more efficient photosyn [...]

by Stefan Hardy Lung  and Thomas Lung

Received: 30 November 2024;  Published: 14 April 2025;  doi: 10.21926/obm.geriatr.2502307

Cellular senescence (aging) is a physiological process that plays a role in tissue remodeling, wound healing, and embryogenesis. Prolonged senescence of cells can have detrimental effects and trigger a secretory phenotype (SASP, senescence-associated secretory phenotype), degenerative disorders, cancer, and age-related diseases. Suitable biomarkers and a range of different laboratory methods are used to investigate these complex relationships in vitro and in vivo. Since a universal biomarker for cell senescence has [...]

by Koorosh Goudarzi  and AliReza R. Taghizadeh

Received: 31 December 2022;  Published: 06 February 2023;  doi: 10.21926/jept.2301006

In this paper, due to the importance of energy recovery from internal combustion engines and the increasing human growing need for power and refrigeration, a two-cycle power and refrigeration system consisting of an organic Rankine cycle and an ejector refrigeration cycle is investigated analytically. The proposed system with the ability to use the ejector as an effective and economical system, can produce simultaneous power and refrigeration by drawing thermal energy from the exhaust gas and engine coolant in the [...]

by Deborah H. John  , Patrick Abi Nader  and Katherine Gunter

Received: 29 October 2018;  Published: 06 January 2020;  doi: 10.21926/obm.geriatr.2001098

Physical inactivity is the fourth leading risk factor for global mortality and as such, it is critical that physical activity guidelines for health consider equitable access to physical activity opportunities for all, including those aged 65 years and older. The purpose of this study was to examine the intersections of attributes of older people (e.g. income, gender, age, health, physical activity) and attributes of the places they live (e.g. rurality, public transit, sidewalks, parks, community centre) to explain [...]

by Victoria Lorenzetti  , Elena Bargagli  , Antonella Fossi  , David Bennett  , Paolo Cameli  and Paola Rottoli

Received: 30 August 2018;  Published: 18 December 2018;  doi: 10.21926/obm.transplant.1804033

Background: Alpha-1-antitrypsin (AAT) deficiency is the most common hereditary disorder in adults and is associated with an increased risk of developing lung emphysema. Methods:Here, we report the case of a 54-year-old man, who underwent bilateral lung transplantation due to AAT deficiency emphysema in the general hospital of Siena, Italy. Results:The patient was diagnosed with partial AAT deficiency (189 mg/dL) associated with the PIMZ genotype; although he quit smoking, his lung disease progressed to chronic resp [...]

by Xiang-Yu Sun  , Ping-Hong Jhou  , Min-Ze Lu  and Chang-Ming Liaw

Received: 25 February 2021;  Published: 22 June 2021;  doi: 10.21926/jept.2102028

This paper presents the development of a wind Interior Permanent-Magnet Synchronous Generator (IPMSG) based bipolar DC microgrids along with various switch-mode rectifiers. Firstly, the wind IPMSG is established and adequately controlled to possess satisfactory generating characteristics during different driven speeds and loads. Later, the boost switch-mode rectifier (SMR) based bipolar DC bus is established. Further, three-phase single-switch (3P1SW) boost SMR, three-phase two-switch (3P2SW) three-level boost SMR, [...]

by Oliver Reed  , Patrick B Allen  , Grant Caddy  , John Eccles  and Tony CK Tham

Received: 28 January 2019;  Published: 26 March 2019;  doi: 10.21926/obm.hg.1901015

Crohn’s disease is a chronic inflammatory condition of the gastrointestinal tract which can result in luminal stenosis and up to 90% of patients requiring surgery during their lifetime. Medical management aims to reduce the inflammatory burden to prevent the development of inflammatory strictures, progression to fibro-stenosis and subsequent obstructive symptoms. Endoscopic balloon dilatation (EBD) is a well-established, safe technique in the management of short strictures to prevent patients having multiple surgic [...]

by Hiromi Matsuhashi

Received: 28 April 2022;  Published: 06 June 2022;  doi: 10.21926/cr.2202015

Solid base catalysts consisting of MgO modified with 10 mol% ZnO (ZnO/MgO) were prepared by depositing zinc(II) acetylacetonate (Zn(acac)2) in polar and nonpolar organic solvents on the surface of MgO and Mg(OH)2. The process was followed by thermal decomposition in air at 773 K over a period of 3 h. The activity of MgO modified with Zn(acac)2 for base-catalyzed retroaldol reaction (the decomposition of diacetone alcohol (4-hydroxy-4-methyl-2-pentanone) to acetone) at 299 K was higher than the activity of unmodifie [...]

by Yi-Chia Liao  , Chun-Hway Hsueh  and Wen-Shin Lee

Received: 16 May 2020;  Published: 15 June 2020;  doi: 10.21926/rpm.2002014

Inspired by the application of metallic glass sheet as face material for improving the performance of golf clubs, the present work was aimed to explore the application of thin-film metallic glass (TFMG) coatings for enhancing the performance of strings. In order to achieve this aim, badminton strings were coated with TFMG coatings of different thicknesses. The compositions of these TFMG coatings were analyzed using an electron probe micro-analyzer. The amorphous structure of the film was verified using X-ray diffra [...]

by Omid Ranjbar Pouya  , Ahmad Byagowi  , Debbie M. Kelly  and Zahra Moussavi

Received: 20 August 2018;  Published: 27 June 2019;  doi: 10.21926/obm.geriatr.1902059

Background: Previous studies have reported that coordinate information (i.e. distance between any two objects in a specific direction) is encoded differently from Virtual Reality (VR) and physical scenes. However, the accuracy of encoding categorical information (i.e. relative positions of objects) from VR scenes has not been adequately investigated. During this study, we used a novel rotating visual scene to study the effects of aging, prior experience with VR, and dementia on the accuracy of encoding categorical [...]

by Ian Macreadie  and Sudip Dhakal

Received: 05 May 2019;  Published: 17 July 2019;  doi: 10.21926/obm.geriatr.1903064

The yeast, Saccharomyces cerevisiae, the model eukaryote, has provided much understanding of molecular and cellular biology, as well as insights into many human diseases. In this paper we review how yeast studies are contributing to knowledge about the role of oxidative damage to cell health, and how one of the key players in Alzheimer’s disease, amyloid beta (Aβ) is linked to the reactive oxygen species response involving AHP1, which encodes an alkyl hydroperoxidase, Ahp1p, a protein involved in protect [...]

by Katrine Hygum  , Jakob Starup-Linde  , Torben Harsløf  and Bente Langdahl

Received: 29 August 2019;  Published: 04 December 2019;  doi: 10.21926/obm.geriatr.1904090

Background: The increased risk of fractures in individuals with diabetes has been underestimated by conventional fracture predictors such as the bone mineral density T-score or the Fracture Risk Assessment Tool. The present study conducted a systematic review and a meta-analysis to investigate the association between the levels of bone turnover markers (BTMs) and fractures in patients with diabetes. Methods: We conducted a systematic literature search. Eligibility criteria were studies investigating BTMs in patient [...]

by Ashleigh Trapuzzano  , Sara Chizmar  , Lauren Wilda  and Nicole Dawson

Received: 03 April 2020;  Published: 27 September 2020;  doi: 10.21926/obm.geriatr.2003134

This study investigated the predictors of gait speed in community dwelling older adults while examining interplay between physical performance and cognition on comfortable and fast gait speed. Sixty-six community-dwelling older adults (mean age 80.8 71% female) completed the following: 30-Second Chair Stand (30-SCS), Functional Reach (FR), Flanker Task, Digit Symbol Substitution Test (DSST), and gait speed (comfortable and fast). Hierarchical linear regression examined the relationship of comfortable and fast gait [...]

by Joseph S. D'Arrigo

Received: 26 December 2019;  Published: 28 February 2020;  doi: 10.21926/obm.geriatr.2001110

Aging, hypertension, diabetes, obesity, atherosclerosis, traumatic brain injury, and other factors can all synergistically promote diverse pathological mechanisms. These risk factors trigger widespread inflammation and oxidative stress, both of which can lead to blood-brain barrier (BBB) disruption. These pathological cascades lead to neuronal Ca2+ increase, neurodegeneration, gradual cognitive/memory decline, and eventually Alzheimer's disease. In particular, more recent research indicates that chronic inflamm [...]

by Myriam Rudaz  , Thomas Ledermann  , Michael P. Twohig  and Michael E. Levin

Received: 24 May 2019;  Published: 10 October 2019;  doi: 10.21926/obm.icm.1904059

Background: There is robust evidence that mindfulness trainings enhance mindfulness as operationalized in Western psychology, but evidence about their effect on aspects of heartfulness is sparse. The present study, therefore, sought to evaluate whether a brief mindfulness training enhances heart qualities, including self-compassion, gratitude, and the generation of feelings of happiness. Methods: Eighteen students enrolled in a mindfulness training that was offered as part of an interdisciplinary class. The trainin [...]

by Robert Marx  and Lisa Burroughes

Received: 13 October 2018;  Published: 02 February 2019;  doi: 10.21926/obm.icm.1901009

Background: Training is generally not available for those wishing to deliver non 8 week Mindfulness Based Interventions (MBIs) adapted for specific contexts and populations. A new model for training in MBIs is developed with the following principle components: teaching on theory, participation in a practice, followed by teaching the practice and receiving feedback, and consultation and discussion of live mindfulness-based work. Methods: A quantitative and qualitative evaluation is presented of the experience of the [...]

by James David Adams

Received: 14 January 2018;  Published: 19 December 2018;  doi: 10.21926/obm.icm.1804035

Background: This study presents several case reports of chronic pain patients treated with two different plant medicines from the Chumash Indian tradition. Methods: Patients suffering from self-reported fibromyalgia, chronic back pain, chronic bursitis, chronic tendinitis and other conditions were treated. California sagebrush (Artemisia californica) was grown by the author and made into a liniment. The liniment was applied to painful sites on the skin. Black sage (Salvia mellifera) was made into a sun tea. Chronic [...]

by Patrick Hagen  , William Adams  , Shruti Singh  , Shuai Qin  , Loredana Campo  , Stephanie Tsai  , Nasheed Hossain  , Scott E Smith  and Patrick J Stiff

Received: 04 November 2020;  Published: 07 February 2021;  doi: 10.21926/obm.transplant.2101136

Allogeneic stem cell transplantation remains the only curative option for many hematological malignancies. Umbilical cord blood (UCB) is an alternate donor source with potentially increased morbidity in elderly patients. We evaluated outcomes in alternate donor sources, prior to the initiation of haploidentical transplantation at our institution, of matched unrelated donor (MUD) and UCB in elderly patients (mean age 64, range 60-75). One hundred and eighty-four patients were included (MRD: 57; MUD: 69; UCB: 58). Th [...]

by Giuseppe Cocco  and Philipp Amiet

Received: 05 February 2020;  Published: 19 March 2020;  doi: 10.21926/obm.geriatr.2001111

The present article summarizes the current state of understanding in geriatric cardiology in terms of the main developments in the field. The focus of the present review is on the therapeutics, into the specific characteristics of the elderly pa­tients dealing with the prevention of arterial hypertension, bradycardic arrhythmias, atrial fibrillation, coronary artery syndromes, valve heart diseases, and heart failure. Progress in the field of medicine has rendered possible to treat lethal cardiac diseases in the [...]

by Ondřej Roubal

Received: 06 February 2023;  Published: 10 May 2023;  doi: 10.21926/obm.geriatr.2302235

This research study addresses certain theoretical issues surrounding the relationship between digital technologies, the aging population, and identity. At the same time, it offers a conceptual proposal of indicators of the social inclusion of older people in the digital culture of society as a potential starting point for further empirical research. The progressive trend of a growing proportion of older people is a demographic reality in many economically and technologically advanced societies. This demographic agi [...]

by Mª Carmen Márquez

Received: 27 March 2024;  Published: 18 July 2024;  doi: 10.21926/cr.2403009

Lipase-catalyzed hydrolysis of olive oil has been studied in the absence of emulsifier. A simple mathematical model to predict the hydrolysis rate is derived from a proposed kinetic mechanism of the reaction. The hydrolytic reaction obeys Michaelis-Menten kinetics with a simultaneous second-order enzyme deactivation. The model predictions closely agree with the experimental results.

by Ivan Y. Iourov  , Svetlana G. Vorsanova  and Yuri B. Yurov

Received: 29 May 2018;  Published: 15 August 2018;  doi: 10.21926/obm.genet.1803028

Runs of homozygosity (ROH) are uninterrupted contiguous regions within the genome exhibiting allelic homozygosity (alleles are inherited from the same parent). Genome-wide analyses consistently demonstrate that megabase-scale ROH are ubiquitous in humans, reflecting individual demographic history. The number and length of ROH correlate increasingly with the degree of consanguinity and can be associated with genetic diseases in both inbred and outbred individuals. Genomic imprinting and uniparental disomy (UPD) are [...]

by Susan M. Joshi  and Leland J. Jackson

Received: 20 November 2021;  Published: 15 February 2022;  doi: 10.21926/aeer.2201007

Cyanobacteria blooms alter aquatic ecosystems and occur frequently in shallow prairie lakes, which are predicted to increase in salinity as the regional climate becomes hotter and drier. However, flat landscapes that experience depression bottom salinity with high concentrations of sulfate in addition to sodium and chloride, may mitigate nutrient increases or even inhibit cyanobacteria growth. Cyanobacteria can dominate shallow lakes with low N:P ratios because many cyanobacteria species fix dissolved N2, whether d [...]

by Alessandro Luigi Rossi  , Vincenzo Capilupi  , David Palombo  , Luigi Tagliatesta  , Tecla Terenzio  , Marco Vitali  and Matteo Chiapasco

Received: 29 April 2019;  Published: 30 August 2019;  doi: 10.21926/obm.hg.1903035

OBJECTIVES To review current literature analysing possible secondary complications in response to the administration of paracetamol and codeine as analgesics in the dental field. To discuss a case of secondary acute pancreatitis triggered by the administration of both active ingredients. MATERIALS AND METHODS A 28-year-old patient, without any pancreatic or hepatobiliary condition was diagnosed with acute pancreatitis 3 hours after taking paracetamol 500mg and codeine 30mg prescribed as pain-relief therapy after ex [...]