by Andrew Weems  , Wenyan Li  , Duncan Maitland  and Luz Marina Calle

Received: 12 September 2019;  Published: 31 December 2019;  doi: 10.21926/rpm.1904008

Biomedical applications of shape memory polymers (SMPs) are limited by their biostability, degradability, and possible toxicity risks after implantation. Mesoporous silica nanoparticles (MSNs) were used to increase the oxidative biostability (increase time until degradation occurs) using antioxidants and to induce oxidative degradation through incorporation of hydrogen peroxide-containing MSNs with modified surfaces. The presented results confirm increased oxidative stability using antioxidants, and alternatively, [...]

by Muayad Alali  , Michael Z. David  , Sandra A. Ham  , Danziger-Isakov LA  , Allison H. Bartlett  , Lindsay Petty  and Jennifer C. Pisano

Received: 27 November 2019;  Published: 21 February 2020;  doi: 10.21926/obm.transplant.2001102

Most studies of children with prolonged fever and neutropenia (PFN) have focused on invasive fungal disease (IFD) as the etiology of fever and not on other causes. Data are lacking regarding risk factors and adverse outcomes in pediatric cancer patients with PFN compared with those whose fevers resolve more rapidly. Retrospective medical record review was performed for all cancer patients with febrile neutropenia (FN) in the pediatric oncology unit at University of Chicago Medicine Comer Children’s Hospital f [...]

by Elham Amjad  , Babak Sokouti  , Solmaz Asnaashari  and Siavoush Dastmalchi

Received: 29 August 2024;  Published: 17 December 2024;  doi: 10.21926/obm.genet.2404275

This systematic review examines the role of SnRK2 (Sucrose non-fermenting 1-Related protein Kinase 2) genes in Arabidopsis thaliana growth and responses to abiotic stresses. SnRK2 protein kinases are key components of abscisic acid (ABA) signaling and osmotic stress responses in plants. The review synthesizes findings from numerous studies on how different SnRK2 genes regulate Arabidopsis growth, development, and stress tolerance at various life stages. Key topics covered include SnRK2 functions under environmental [...]

by Camila Sandoval  , Colleen A Lambo  and Michael Carey Satterfield

Received: 01 June 2018;  Published: 28 December 2018;  doi: 10.21926/obm.genet.1804058

Understanding the pathophysiology of disease can be an essential step to determining where and how to intervene for preventive or corrective health. Intrauterine growth restriction (IUGR) has been defined in livestock species as impaired gestational development of a fetus or its parts [1]. This broad category of ailments described by low fetal weight is accompanied by susceptibility to adult onset of chronic disease through fetal programming of numerous organ systems and their functions. This concern affects humans [...]

by Arnaud Philippot  , Yannick Bleyenheuft  and Anne De Volder

Received: 21 June 2020;  Published: 07 January 2021;  doi: 10.21926/obm.icm.2101002

In a previous study conducted to assess the impact of physical exercise on the symptoms of depression and anxiety in preadolescents in the school environment, which included a subgroup of participants comprising eleven randomly selected teens (aged 9–11) and all enrolled in primary education, it was immediately observed that one participant referred to as Andy was being bullied and teased, and the teachers were completely unaware of this scenario. All the participants of the study were volunteers, and were subjecte [...]

by Alberto Arias-Pérez  , Daniel Ramírez-Torres  , María E. Rodríguez  , Silvia Portela-Bens  , Emilio García-Suarez  , Manuel A. Merlo  , Aglaya García-Angulo  , Ismael Cross  , Thomas Liehr  and Laureana Rebordinos

Received: 31 July 2018;  Published: 24 October 2018;  doi: 10.21926/obm.genet.1804044

Background: MicroRNAs (miRNAs) are small, non-coding RNAs that play a very important role in gene expression by regulating mRNA cleavage and translation. The Senegalese sole, Solea senegalensis (Kaup 1858), is a flatfish species that shows great potential for marine aquaculture. Nevertheless, the existence of sexual dysfunction of males reared in captivity, high larval mortality, and diseases have hampered its production. The integration of sequence information with data on chromosomal physical location is useful f [...]

by Tara T. Lineweaver  , Suneeta Kercood  , Elyse B. Morgan  , Shelby L. Rampone  , Colleen C. Frank  , Scott A. McLuckie  and Mack F. Reed

Received: 27 October 2019;  Published: 07 January 2020;  doi: 10.21926/obm.icm.2001002

Past research suggests that exercise is associated with improved working memory (WM) abilities, and that athletes have better executive functioning and WM skills than non-athletes. However, no studies to date have separated the effects of exercise from the effects of athletic participation when examining WM. This study had three primary goals: (1) to determine whether amateur college athletes have better auditory and visual WM than their non-athlete peers who exercise frequently and whether non-athlete frequent exe [...]

by Nicholas Lim  , Gregory Beilman  and Timothy Pruett

Received: 21 March 2018;  Published: 12 June 2018;  doi: 10.21926/obm.transplant.1802011

Portal hypertension often occurs transiently with injection of islet cells into the portal system during total pancreatectomy-islet autotransplantation (TPIAT). We describe a TPIAT patient with non-cirrhotic portal hypertension (NCPH) two years after surgery initially identified with esophageal varices on upper endoscopy. The underlying mechanism for the development of NCPH after TPIAT is unclear but infectious and immune-related pathways have been proposed. Management of NCPH is primarily treatment of complication [...]

by Gerhard Litscher

Received: 11 November 2020;  Published: 13 November 2020;  doi: 10.21926/obm.icm.2004043

The Nogier reflex or reflex auriculo-cardiac (RAC) or the dynamic pulse reaction is a physiological phenomenon that is not generally accepted in conventional medicine. Therefore, evidence-based research in this sub-area is important for auricular medicine as it provides appropriate scientific evidence for better acceptance. In this editorial, a RAC measurement based on a modified smartphone registration and analysis is presented. The contribution is intended to stimulate researchers to continue working in this inte [...]

by Maud Gits-Muselli  , Stéphane Bretagne  and Alexandre Alanio

Received: 04 December 2018;  Published: 17 January 2019;  doi: 10.21926/obm.genet.1901060

Pneumocystis jirovecii is an atypical fungus transmitted via the airborne route between humans. This fungus is exclusively associated with humans and almost each individual has encountered it at least once before reaching the age of two. P. jirovecii can be cleared and spontaneously resolutive in immunocompetent, whereas it can be responsible for severe Pneumocystis pneumonia (PCP) in immunocompromised patients. In the next decades, the putative increase of the population of immunocompromised patients is likely to [...]

by Antonella Ciaramella

Received: 01 January 2020;  Published: 17 March 2020;  doi: 10.21926/obm.icm.2001014

Over the last 30 years, several neuroimaging and neurophysiological experiments have lent support to the neuropsychology of consciousness, and several definitions have followed to describe it. The phenomenological perspective of consciousness facilitates the description of the individual’s awareness experience of internal states (e.g., perception, sensations, emotion, volition, or memories), thus helping us to better understand the relationship between the brain and mind. Although significant research has been aime [...]

by Joep Geraedts

Received: 08 April 2019;  Published: 14 August 2019;  doi: 10.21926/obm.genet.1903089

Mitochondrial diseases are among the most prevalent inborn errors of metabolism. The overwhelming majority of mitochondrial diseases (about 85%) result from mutations in nuclear genes involved in oxidative phosphorylation, while some (15%) are caused by mutations in mitochondrial DNA (MtDNA). The familial mtDNA mutations are exclusively inherited from the mother. There are four main methods available to prevent the transmission of mtDNA mutations: preimplantation genetic diagnosis (PGD) or prenatal diagnosis (PND) [...]

by Em V. Adams  , Marieke Van Puymbroeck  , Heather S. Torphy  , Brian C. Helsel  , Karen A. Kemper  , Cheryl Dye  and Arlene A. Schmid

Received: 03 October 2019;  Published: 03 January 2020;  doi: 10.21926/obm.geriatr.2001097

Falls have negative consequences for older adults, but falls can be reduced through interventions that target the reduction of fall risk factors. Cognitive behavioral education programs and therapeutic yoga are two interventions that have independently been used as a means to reduce the risk of falls. The purpose of this study was to determine if adding therapeutic yoga following an education intervention improved well known fall risk factors. Potential participants were recruited through a senior center for a 12-w [...]

by Mônica Batista Leite  and Paulo Roberto Lopes Lima

Received: 07 March 2021;  Published: 28 July 2021;  doi: 10.21926/rpm.2103032

The production of concrete using recycled aggregates, obtained from the processing of construction and demolition waste, is extensively practiced worldwide. However, the effect of simultaneous adding fine recycled aggregate and the recycled coarse aggregate on the mechanical properties of concrete is still unfamiliar. This work aims to evaluate the influence of the water/cement ratio (WC Ratio), the fine recycled aggregate content (%FRA), the coarse recycled aggregate content (%CRA), as well as the interaction betw [...]

by Ryan Sweeney  , Alvaro J La Rosa  , Nina Sheade  , Rachael C. Olson-Marszewski  , Ryan Bergren  and Edwin Meresh

Received: 12 January 2020;  Published: 01 April 2020;  doi: 10.21926/obm.neurobiol.2002054

Case studies have associated catatonia with withdrawal from benzodiazepines and clozapine, both of which have been shown to increase GABA activity. Long-term use of GABAergic medications could result in GABAA downregulation and sudden discontinuation of the GABAergic drug could lead to a GABA hypoactive state which could predispose the patient to catatonia. The anticonvulsant topiramate, is known to increase brain GABA activity. Prader-Willi syndrome (PWS) is a genetic imprinting disorder characterized by lack of e [...]

by Konstantinos Magganas  , Sophia Delicou  , Aikaterini Xydaki  and Zoi Pallantza

Received: 19 May 2019;  Published: 17 September 2019;  doi: 10.21926/obm.genet.1903095

Thalassemia syndromes are a group of hemoglobinopathies characterized by gene defects that disrupt normal hemoglobin production. Thalassemia intermedia (TI) is referred to as a group of disorders with a less severe form of the disease compared to thalassemia major. We present a case of a 60-year-old woman who was referred to a hematologist for chronic anemia and splenomegaly.

by Ahmed H Abdelhafiz

Received: 05 March 2020;  Published: 01 April 2020;  doi: 10.21926/obm.geriatr.2002113

The prevalence of diabetes in older people is increasing. Diabetes in old age is associated with increased risk of mental dysfunction. Cognitive dysfunction and mood disorders such as depression, anxiety and diabetes-related distress tend to coexist in older people with diabetes and appear to have bidirectional relationship acting as a risk factor and, at the same time, as a consequence of diabetes. To break the vicious circle of this complex reciprocal relationship between diabetes and mental dysfunction, early id [...]

by Kristopher M. Struckmeyer  , Alex J. Bishop  , Brenda J. Smith  and Brandt C. Gardner

Received: 27 August 2018;  Published: 27 February 2019;  doi: 10.21926/obm.geriatr.1901037

Background: The purpose of this study was to examine discrepancies in self-proxy agreement of biopsychosocial factors and the influence of objective well-being and psychosocial resources self and proxy appraisals of subjective well-being in older adults. Methods: Seventy-two older adult-proxy dyads rated the biopsychosocial health of non-cognitively impaired older adults. Results: Proxies underestimated functional ability, psychosocial factors, and overrated negative health outcomes compared to older adults. Older [...]

by Joachim Andrassy  and Antje Habicht

Received: 05 November 2018;  Published: 27 June 2019;  doi: 10.21926/obm.transplant.1902070

In recent years, the potential of hematopoietic stem cells, regulatory T-cells, and mesenchymal stem cells have brought about a variety of clinical tolerance trials. Every approach has yielded promising results; however, the riddle of transplant tolerance has not been solved as of yet. The results of the ongoing trials in this field will provide additional information regarding the risks and benefits of these therapy approaches.

by Jeffrey M. Witkin  , Lalit K. Golani  , Rok Cerne  , Md. Toufiqur Rahman  , Guanguan Li  , Michael M. Poe  , James M. Cook  and Jodi L. Smith

Received: 05 May 2019;  Published: 26 August 2019;  doi: 10.21926/obm.geriatr.1903073

Major depressive disorder is a highly-prevalent and debilitating disorder in the aged population. Accumulating clinical evidence suggests a key role for social support in helping to mitigate depression. Preclinical data are reviewed that indicate that selective negative allosteric modulation of α5-containing GABAA receptors, as with RY-080, might rapidly impact depression in patients. Further, preclinical data in transgenic mice modeling neurodegenerative diseases has suggested that this mechanism might also [...]

by Lotte Hvas

Received: 28 August 2023;  Published: 30 October 2023;  doi: 10.21926/obm.geriatr.2304256

Narratives and how women interpret their symptoms have always been a part of how menopause is experienced. Today, as women feel more accessible to talk about menopause, new narratives are being formed and negotiated - both to menopause and concerning women becoming older. These different narratives mirror the fact that the transitional phase differs from woman to woman and that some women experience many symptoms while others do not seem bothered at all. Some narratives underscore menopause as a transformative peri [...]

by Plamen Mihaylov  , Burcin Ekser  , Daiki Soma  , Andrew Lutz  , Jonathan Fridell  and Chandrashekhar A. Kubal

Received: 04 January 2021;  Published: 11 March 2021;  doi: 10.21926/obm.transplant.2101138

One of the most feared complications in liver transplantation is hepatic arterial thrombosis (HAT). The incidence of HAT in liver transplantation varies from 1.2% and 8%. One of the risk factors for this complication is anatomical complexity of hepatic arterial system. The focus of this short communication is to show our approach in dealing with aberrant left hepatic artery in settings of liver transplantation. This is a single center experience. Between January 2016 and June 2019, we procured and transplanted 357 [...]

by Lin Xie  and Donald Kirk

Received: 09 June 2021;  Published: 16 September 2021;  doi: 10.21926/cr.2103003

Fe-rich alloys have been widely studied as catalyst materials for the cathodic oxygen reduction reaction (ORR) in hydrogen fuel cells, and many have shown high activities. The stability of Fe-rich catalysts has also been researched, and some studies have shown promising results using an accelerated stress test (AST), which uses a potential cycling method. However, for commercial fuel cell applications, such as standby power systems, the catalyst has to tolerate a high potential for a long period, which can not be r [...]

by Marco Barale  , Ruth Rossetto Giaccherino  , Ezio Ghigo  and Massimo Procopio

Received: 31 October 2018;  Published: 14 February 2019;  doi: 10.21926/obm.geriatr.1901033

Background: It is well known that hypovitaminosis D has been associated with various cardio-metabolic disorders, though the pathogenetic link, if any, still remains unclear. Our aim was to evaluate in elderly uncontrolled non-insulin-treated type 2 diabetic patients with hypovitaminosis D, whether six-months vitamin D supplementation was able to improve glycemic control, lipid profile and blood pressure levels. Methods: In an open-label pilot study, thirty type 2 diabetic patients (age 71.5 ± 3.2 years, BMI [...]

by Ganga R. Neupane  , Amrit Kaphle  , David N. Mcllroy  , Elena Echeverria  , Prasanna Sankaran  and Parameswar Hari

Received: 12 May 2021;  Published: 04 August 2021;  doi: 10.21926/jept.2103035

Iron doped ZnO (Fe-ZnO) nanoparticles were synthesized using two techniques that are economical as well as scalable to yield tunable properties of nanoparticles for facilitating down conversion in an absorbing layer of a solar cell. To evaluate the suitability of Fe-ZnO nanoparticles prepared by two deposition methods, we present a comparison of optical, electrical, and structural properties of Fe-ZnO using several experimental techniques. Structural properties were analyzed using transmission electron microscopy a [...]