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Andressa Heimbecher Soares, Nidia Celeste Horie, Lucas Augusto Piccinin Chiang, Bruno Caramelli, Mariana Gomes Matheus, Alexandre Holthausen Campos, Luciana Cavalheiro Marti, Fernanda Agostini Rocha, Marcio C Mancini, Elaine Maria Frade Costa, Cintia Cercato
BACKGROUND: Obesity causes secondary hypogonadism (HG) in men. Standard testosterone (T) replacement therapy improves metabolic parameters but leads to infertility. OBJECTIVE: To evaluate clomiphene citrate (CC) treatment of adult men with male obesity-associated secondary hypogonadism (MOSH). DESIGN: Single-center, randomized, double-blind, placebo-controlled trial. PARTICIPANTS: Seventy-eight men aged 36.5 ± 7...
May 17, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
Padmini Hari, Kranthi Raja Kacharaju, Naveen Anumala, Krishnanjaneya Reddy Pathakota, Jayakumar Avula
Context: Biofilms are known for their antimicrobial resistance, and so is the subgingival plaque biofilm, the primary etiologic factor for periodontal infections. Aims: The objective of this study is to investigate if the subgingival plaque biofilm resistance can be reduced using doxycycline in the presence of low-intensity electric field (bioelectric effect). Settings and Design: The study was an in vitro microbiological study. Materials and Methods: Subgingival plaque samples from chronic periodontitis patients were collected to grow subgingival plaque biofilms on hydroxyapatite disks...
March 2018: Journal of Indian Society of Periodontology
Jeanine M Van Ancum, Mirjam Pijnappels, Nini H Jonkman, Kira Scheerman, Sjors Verlaan, Carel G M Meskers, Andrea B Maier
BACKGROUND: Low muscle mass and strength are highly prevalent in inpatients. It is acknowledged that low muscle mass and strength are associated with falls in community-dwelling older adults, but it is unknown if these muscle measures are also associated with falls in a population of older inpatients. This study aimed to investigate the association between muscle measures and pre- and post-hospitalization falls in older inpatients. METHODS: An inception cohort of patients aged 70 years and older, admitted to an academic teaching hospital, was included in this study...
May 16, 2018: BMC Geriatrics
Shunqi Zhang, Tao Yin, Zhipeng Liu
Detecting and imaging method of biological electrical characteristics based on magneto-acoustic coupling effect gives valuable information of tissue in early tumor diagnosis and bioelectrical current monitoring. Normal exciting and receiving method is to use single pulse. In this method the signal to noise ratio (SNR) is limited, so the imaging quality and imaging speed are low. In this study, we propose a processing method based on coded excitation to improve SNR and shorten the processing time. The processing method using 13 bit Barker coded excitation and 16 bit Golay code excitation are studied by simulation and experiments...
October 1, 2017: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
Gustavo Gonzales Real, Inara Regina Frühauf, José Henrique Koth Sedrez, Eduarda Jaine Fachinello Dall'Aqua, Maria Cristina Gonzalez
Hospital readmissions (HRs) are common, potentially preventable, and a marker of poor quality in health services. This study aimed to identify risk factors for HR in clinical patients, with an emphasis on nutrition aspects, especially calf circumference (CC), as a marker of muscle mass. A prospective cohort study of patients admitted to the internal medicine ward was conducted. The short form of the Patient-Generated Subjective Global Assessment was performed in the first 24 hours of hospitalization. In addition, single-frequency bioelectrical impedance analysis was used to estimate the phase angle, CC as a surrogate of muscle mass, and handgrip strength as a marker of strength...
May 15, 2018: JPEN. Journal of Parenteral and Enteral Nutrition
Martin R Silic, GuangJun Zhang
Bioelectricity, endogenous electrical signaling mediated by ion channels and pumps located on the cell membrane, plays important roles in signaling processes of excitable neuronal and muscular cells and many other biological processes, such as embryonic developmental patterning. However, there is a need for in vivo electrical activity monitoring in vertebrate embryogenesis. The advances of genetically encoded fluorescent voltage indicators (GEVIs) have made it possible to provide a solution for this challenge...
April 25, 2018: Journal of Visualized Experiments: JoVE
Nannan Zhao, Yinan Jiang, Merlin Alvarado-Morales, Laura Treu, Irini Angelidaki, Yifeng Zhang
The potential of macroalgae Laminaria digitata as substrate for bioelectricity production was examined in a microbial fuel cell (MFC). A maximum voltage of 0.5 V was achieved without any lag time due to the high concentration of glucose and mannitol in the hydrolysate. Total chemical oxygen demand removal efficiency reached over 95% at the end of batch run. Glucose and mannitol were degraded through isobutryrate as intermediate. The 16S rRNA gene high throughout sequencing analysis of anodic biofilm revealed complex microbial composition dominated by Bacteroidetes (39...
May 5, 2018: Bioelectrochemistry
Joseph M Braun, Heidi J Kalkwarf, George D Papandonatos, Aimin Chen, Bruce P Lanphear
BACKGROUND: Excess weight gain in infancy and childhood is associated with increased risk of subsequent obesity. Identifying patterns of infancy and childhood weight gain associated with subsequent obesity or overweight status could help identify children at highest risk. Thus, we examined patterns of infancy and early childhood BMI in relation to mid-childhood overweight and obesity status. METHODS: In a prospective cohort of 215 children from Cincinnati, OH (born: 2003-2006), we measured weight and length or height at ages 4 weeks and 1, 2, 3, 4, 5, and 8 years...
May 11, 2018: BMC Pediatrics
Navanietha Krishnaraj Rathinam, Abhilash K Tripathi, Alevtina Smirnova, Haluk Beyenal, Rajesh K Sani
The present study is focused on enhancing the rheological properties of the electrolyte and eliminating sedimentation of microorganisms/flocs without affecting the electron transfer kinetics for improved bioelectricity generation. Agar derived from polysaccharide agarose (0.05-0.2%, w/v) was chosen as a rheology modifying agent. Electroanalytical investigations showed that electrolytes modified with 0.15% agar display a nine-fold increase in current density (1.2 mA/cm2 ) by a thermophilic strain (Geobacillus sp...
April 24, 2018: Bioresource Technology
Sandra N Stapel, Wilhelmus G P M Looijaard, Ingeborg M Dekker, Armand R J Girbes, Peter J M Weijs, Heleen M Oudemans-van Straaten
BACKGROUND/OBJECTIVES: A low bioelectrical impedance analysis (BIA)-derived phase angle (PA) predicts morbidity and mortality in different patient groups. An association between PA and long-term mortality in ICU patients has not been demonstrated before. The purpose of the present study was to determine whether PA on ICU admission independently predicts 90-day mortality. SUBJECTS/ METHODS: This prospective observational study was performed in a mixed university ICU...
May 11, 2018: European Journal of Clinical Nutrition
M J Benton, A L Silva-Smith
We compared accuracy of body mass index (BMI) versus lean mass index (LMI) to predict sarcopenia in 58 community-dwelling women (74.1±0.9 years). Lean mass was measured with multi-frequency bioelectrical impedance analysis, and strength was measured with Arm Curl test, Chair Stand test, and handgrip dynamometry. Sarcopenia was defined as low LMI. When categorized by BMI, normal women had less absolute lean mass (37.6±1.0 vs. 42.6±0.9 kg; P<0.001) and less relative lean mass (14.1±0.2 vs. 16.1±0.2 kg/m2; P<0...
2018: Journal of Frailty & Aging
Garam Jo, Brenda Rossow-Kimball, Yongho Lee
The current study examined the effects of an exercise program on health related physical fitness, self-efficacy, and physical activity levels in adults with intellectual disability. The study used pre- and posttest experimental research design with a control group. Total of 23 adults with intellectual disability were recruited with 12 assigned for the exercise group and 11 for the control group, separately. The measures of health related physical fitness included cardio pulmonary endurance (step-test), body composition (bioelectrical impedance analysis), flexibility (sit and reach), muscle endurance (sit-up), and strength (hand grip strength)...
April 2018: Journal of Exercise Rehabilitation
Taylor R Birkholz, Alanna V Van Huizen, Wendy S Beane
A key requirement of tissue/organ regeneration is the ability to induce appropriate shape in situ. Regenerated structures need to be integrated with pre-existing ones, through the combined regulation of new tissue growth and the scaling of surrounding tissues. This requires a tightly coordinated control of individual cell functions such as proliferation and stem cell differentiation. While great strides have been made in elucidating cell growth and differentiation mechanisms, how overall shape is generated during regeneration remains unknown...
May 5, 2018: Seminars in Cell & Developmental Biology
Marcello de Alencar Silva, Yulla Klinger de Carvalho Leite, Camila Ernanda Sousa de Carvalho, Matheus Levi Tajra Feitosa, Michel Muálem de Moraes Alves, Fernando Aécio de Amorim Carvalho, Bartolomeu Cruz Viana Neto, Maria Angélica Miglino, Angela Faustino Jozala, Maria Acelina Martins de Carvalho
Background: Tissue engineering has been shown to exhibit great potential for the creation of biomaterials capable of developing into functional tissues. Cellular expansion and integration depends on the quality and surface-determinant factors of the scaffold, which are required for successful biological implants. The objective of this research was to characterize and evaluate the in vitro characteristics of rabbit bone marrow mesenchymal stem cells (BM-MSCs) associated with a bacterial cellulose membrane (BCM)...
2018: PeerJ
Daniel Fels
Life is based on two aspects: matter and a non-material, electrical component. In a dynamic system of reciprocal causality, matter and the so-called bioelectricity interact with one another, forming a functional unity. The aim of this essay is to summarize evidence for bioelectricity, for the sensitivity of biosystems to external physical factors and for the interactions of internal bioelectricity with internal biochemical structures. I propose non-material information of bioelectrical states to be just as inheritable from generation to generation as is the material genetic code...
May 7, 2018: Biology
Christiane de M B Almeida Leite, Maria Eliana M Schieferdecker, Caroline Frehner, Renato P Munhoz, Tetsuo Ashizawa, Hélio A G Teive
BACKGROUND: Spinocerebellar ataxias (SCAs) are a group of neurodegenerative genetic diseases characterized by movement disorders that can affect nutritional status and body composition. This study sought to assess body composition in SCA3 and SCA10 patients. METHODS: Anthropometric assessments and bioelectric impedance analysis were performed in 46 SCA3 and SCA10 patients and 76 controls of both genders. RESULTS: Of the patients, 69.6% had SCA3 and 58...
May 7, 2018: Nutritional Neuroscience
Ryszard Zarzeczny, Agnieszka Nawrat-Szołtysik, Anna Polak, Ahmed Manasar, Jakub Maliszewski, Adam Kiełtyka, Beata Matyja, Magdalena Dudek, Joanna Zborowska, Adam Wajdman
BACKGROUND: Interleukin-6 (IL-6) production facilitates a shift from acute to chronic inflammation that may induce the development of some diseases and aging. Several studies have suggested that adiposity is closely related to serum IL-6 level, but their authors examined relatively young older adults (aged 60-80 years), so it is not clear whether this association would also occur in people at a more advanced age. OBJECTIVE: to assess whether in elderly women without inflammation the widely used anthropometric obesity indices are associated with serum IL-6 level and, if so, to determine the best anthropometric predictor of this inflammatory biomarker...
May 3, 2018: Experimental Gerontology
Udo Bonnet, Dieter Bingmann, Erwin-Josef Speckmann, Martin Wiemann
AIMS: In cortical mammalian neurons, small fluctuations of intracellular pH (pHi) play a crucial role for inter- and intracellular signaling as well as for cellular and synaptic plasticity. Yet, there have been no respective data about humans. Thus, we investigated the interrelation of pHi and excitability of human cortical neurons. MATERIALS AND METHODS: Intracellular electrophysiological and pH-recordings were made in neurons in slices taken from brain tissue resected from the middle temporal gyrus of two male children (26 months and 35 months old) who suffered from pharmacotherapy-resistant temporal lobe epilepsy...
May 3, 2018: Life Sciences
Shu Xiao, Chunrong Zhou, Enbo Yang, Sambasiva R Rajulapati
Biological effects caused by a nanosecond pulse, such as cell membrane permeabilization, peripheral nerve excitation and cell blebbing, can be reduced or cancelled by applying another pulse of reversed polarity. Depending on the degree of cancellation, the pulse interval of these two pulses can be as long as dozens of microseconds. The cancellation effect diminishes as the pulse duration increases. To study the cancellation effect and potentially utilize it in electrotherapy, nanosecond bipolar pulse generators must be made available...
April 26, 2018: Bioelectrochemistry
Junlin Wen, Daigui He, Zhen Yu, Shungui Zhou
C-type cytochromes (c-cyts) facilitate microbial extracellular electron transfer and play critical roles in biogeochemical cycling, bioelectricity generation and bioremediation. In this study, a simple and effective method has been developed to detect microbial c-cyts by means of peroxidase mimetic reaction on screen-printed carbon electrode (SPCE). To this end, bacteria cells were immobilized onto the working electrode surface of SPCE by a simple drop casting. After introducing 3,3',5,5'-tetramethylbenzidine (TMB) solution, microbial c-cyts with peroxidase-like activity catalyze the oxidation of TMB in the presence of hydrogen peroxide...
April 22, 2018: Biosensors & Bioelectronics
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