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https://www.readbyqxmd.com/read/28429674/targeting-the-role-of-lipoprotein-a-in-stroke
#1
Mahdi Garelnabi, Zahra Mazhar, Andrew Hughes
Stroke is the third leading cause of death in the United States, behind only heart disease and cancer, with over 140,000 associated deaths per year. Considerable research is ongoing to examine the role of modifiable risk factors which may cause or contribute to a stroke occurring. Although age and family history are generally considered to be major risk factors, there are several modifiable and non-modifiable risk factors that are linked to the pathogenesis of a stroke. Lipoprotein (a), or Lp(a), is a type of low-density lipoprotein containing an integral apoB100 component with an attached ApoA1 isoform via a disulfide linkage...
April 21, 2017: Cardiovascular & Hematological Disorders Drug Targets
https://www.readbyqxmd.com/read/28428258/deletion-of-inositol-requiring-enzyme-1%C3%AE-in-podocytes-disrupts-glomerular-capillary-integrity-and-autophagy
#2
Daniel Robert Kaufman, Joan Papillon, Louise Larose, Takao Iwawaki, Andrey V Cybulsky
Inositol-requiring enzyme-1α (IRE1α) is an endoplasmic reticulum (ER)-transmembrane endoribonuclease-kinase, which plays an essential function in extraembryonic tissues during normal development, and is activated during ER stress. To address the functional role of IRE1α in glomerular podocytes, we produced podocyte-specific IRE1α deletion mice. In male mice, deletion of IRE1α in podocytes resulted in albuminuria beginning at 5 months of age, and worsening with time. Electron microscopy revealed focal podocyte foot process effacement in 9-month old male IRE1α deletion mice, as well as microvillous transformation of podocyte plasma membranes...
April 20, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28428015/plasma-neurofilament-light-chain-levels-in-alzheimer-s-disease
#3
Wenjun Zhou, Jie Zhang, Fanlong Ye, Guangzheng Xu, Hang Su, Yindan Su, Xiangyang Zhang
Plasma neurofilament light (NFL) levels may be a marker of neuronal injury. We examined whether plasma NFL might be a potential biomarker for the prodromal and dementia stages of AD. Participants included 193 cognitively normal (CN), 198 amnestic mild cognitive impairment (aMCI) and 187 Alzheimer's disease (AD) individuals enrolled in the Alzheimer's Disease Neuroimaging Initiative (ADNI). Plasma NFL levels were examined by the Single Molecule array (Simoa) technique. Our results showed significantly increased plasma NFL levels in both AD (50...
April 17, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28427948/comprehensive-characterization-of-humoral-correlates-of-human-immunodeficiency-virus-1-superinfection-acquisition-in-high-risk-kenyan-women
#4
Keshet Ronen, Adam S Dingens, Susan M Graham, Walter Jaoko, Kishor Mandaliya, R Scott McClelland, Julie Overbaugh
HIV-1 superinfection, in which an infected individual acquires a second HIV-1 infection from a different partner, is one of the only settings in which HIV acquisition occurs in the context of a pre-existing immune response to natural HIV infection. There is evidence that initial infection provides some protection from superinfection, particularly after 6months of initial infection, when development of broad immunity occurs. Comparison of the immune response of superinfected individuals at the time of superinfection acquisition to that of individuals who remain singly infected despite continued exposure can shed light on immune correlates of HIV acquisition to inform prophylactic vaccine design...
April 7, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28427902/effects-of-different-green-light-intensities-on-the-growth-performance-and-endocrine-properties-of-barfin-flounder-verasper-moseri
#5
Akiyoshi Takahashi, Satoshi Kasagi, Naoto Murakami, Sumihisa Furufuji, Shigeto Kikuchi, Kanta Mizusawa, Tadashi Andoh
We previously reported that the somatic growth of barfin flounder, Verasper moseri, was effectively stimulated by the green light compared to the blue and red lights. Herein, we report the effects of different green light intensities on the growth and endocrine system of the fish. Fish were reared in a dark room with light from a light-emitting diode (LED) at a peak wavelength of 518 nm under controlled photoperiod (10.5:13.5 h, light:dark cycle; 06:00-16:30, light) with three levels of photon flux density (PFD)-2 (low), 7 (medium), or 21 (high) μmol·m(-2)·s(-1) at the water surface...
April 17, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28424097/unusual-course-of-generalized-lymph-node-primary-plasmacytoma-in-a-patient-with-sj%C3%A3-gren-s-syndrome-a-case-report
#6
Vadim R Gorodetskiy, Natalya A Probatova, Vladimir I Vasilyev
BACKGROUND: Primary lymph node plasmacytoma is a rare disease that typically involves lymph nodes of the neck. In only 15% of cases is the disease generalized. Here, we present a case of generalized lymph node plasmacytoma in a patient with Sjögren's syndrome with an unusual course. CASE PRESENTATION: A 48-year-old white woman presented to our hospital with enlargement of groups of lymph nodes, liver, and spleen. Her medical history was consistent with a 12-year course of Sjögren's syndrome...
April 20, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28422285/hematopoietic-stem-progenitor-cell-differentiation-towards-myeloid-lineage-is-modulated-by-light-light-receptor-signaling
#7
Weikai Chen, Xin Lv, Changlong Liu, Ruoping Chen, Jianhe Liu, Haiyan Dai, Gang-Ming Zou
The cytokine LT-related inducible ligand that competes for glycoprotein D binding to herpesvirus entry mediator on T cells (LIGHT) is a member of the tumor necrosis factor (TNF) superfamily. It is expressed primarily on activated T lymphocytes, and detectable on monocytes, granulocytes, and immune dendritic cells. It mainly plays a role in immune regulation including T cell activation and dendritic cell maturation. We recently reported its role as an inducer in embryonic stem cell differentiation, but its role in regulation of adult stem cell has not been defined...
April 19, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28422046/nanowelding-and-patterning-of-silver-nanowires-via-mask-free-atmospheric-cold-plasma-jet-scanning
#8
Lang Liu, Han-Yu Li, Dong Ye, Yao Yu, Lin Liu, Yue Wu
Silver nanowire (AgNW) thin film is a promising candidate to replace traditional indium tin oxide in optoelectronics applications. To date however, the widespread application of AgNW thin film is limited by the weak point contacts between individual AgNWs and the lack of facile patterning techniques. Here, we demonstrate a novel and facile method to not only nanoweld AgNW junctions but also pattern AgNW thin films via mask-free cold plasma-jet scanning in ambient conditions. After the plasma-jet nanowelding treatment, the morphology of AgNWs change substantially and the junctions are welded together...
April 19, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28421371/temperature-dependent-signal-transmission-in-chloroplast-accumulation-response
#9
Takeshi Higa, Satoshi Hasegawa, Yoshio Hayasaki, Yutaka Kodama, Masamitsu Wada
Chloroplast photorelocation movement, well-characterized light-induced response found in various plant species from alga to higher plants, is an important phenomenon for plants to increase photosynthesis efficiency and avoid photodamage. The signal for chloroplast accumulation movement connecting the blue light receptor, phototropin, and chloroplasts remains to be identified, although the photoreceptors and the mechanism of movement via chloroplast actin filaments have now been revealed in land plants. The characteristics of the signal have been found; the speed of signal transfer is about 1 µm min(-1) and that the signal for the accumulation response has a longer life and is transferred a longer distance than that of the avoidance response...
April 18, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28419361/effect-of-electrical-stunning-frequency-and-current-waveform-in-poultry-welfare-and-meat-quality
#10
T S Siqueira, T D Borges, R M M Rocha, P T Figueira, F B Luciano, R E F Macedo
This study aimed to evaluate the effects of different stunning frequencies and electrical current waveforms on chicken welfare and meat quality. Two-hundred-thirty-two Cobb broilers, 48 d of age and 2.76 ± 0.47 live-weight, were randomly assigned into 4 stunning treatments - 2 frequencies (300 Hz and 650 Hz) and 2 current waveforms (direct current [DC] and alternating current [AC]). Broilers were electrically stunned in a water bath in a commercial slaughterhouse (70 V, 100 mA). The electronarcosis and stunning efficiency were confirmed by assessment of visual parameters (absence of rhythmic breathing, ocular reflex, and coordinated wing flapping) and blood parameters (lactate, glucose, creatine kinase, sodium, and potassium), which were measured after bleeding...
April 17, 2017: Poultry Science
https://www.readbyqxmd.com/read/28417905/analytical-criticalities-associated-to-different-immunological-methods-for-serum-free-light-chain-detection-in-plasma-cell-dyscrasias-a-description-of-particular-clinical-cases
#11
Rocco Sabatino, Antonio Perrone, Marco Cuomo, Sandra Liotti, Vittoria Barchiesi, Monica Cantile, Ernesta Cavalcanti
Current criteria for differential diagnosis of multiple myeloma (MM), Monoclonal gammopathy of undetermined significance (MGUS), and smoldering multiple myeloma (SMM) are included in the 2003 guidelines by the International Myeloma Working Group (IMWG). An updated version was then published in 2014, highlighting the importance of serum free light chain (sFLC) detection, as well as the κ/λ ratio as excellent indicators of clonality. At present, two commercial assays for sFLC quantification are available: the Freelite™ assay and the N-Latex assay...
April 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28417436/evaluation-of-the-pharmacokinetics-and-pharmacodynamics-of-prasugrel-in-japanese-elderly-subjects
#12
Tomoko Hasunuma, Hiroyuki Fukase, Atsuhiro Miyazaki, Yasuhiro Nishikawa
BACKGROUND AND OBJECTIVE: An increased incidence in bleeding events has been reported in Western elderly patients receiving prasugrel. Therefore, doses in Japanese elderly subjects need to be carefully determined. We assessed the pharmacokinetic and pharmacodynamic effects of prasugrel at the clinical dose used in Japan in healthy Japanese elderly subjects compared with non-elderly subjects. METHODS: In an open-label parallel-group study conducted in Japan, two groups (elderly, aged >75 years; non-elderly, aged 45-65 years) received a 20-mg loading dose and a 3...
April 17, 2017: Clinical Drug Investigation
https://www.readbyqxmd.com/read/28411626/quantitative-determination-of-polysulfide-in-albumins-plasma-proteins-and-biological-fluid-samples-using-a-novel-combined-assays-approach
#13
Mayumi Ikeda, Yu Ishima, Akitomo Shibata, Victor T G Chuang, Tomohiro Sawa, Hideshi Ihara, Hiroshi Watanabe, Ming Xian, Yuya Ouchi, Taro Shimizu, Hidenori Ando, Masami Ukawa, Tatsuhiro Ishida, Takaaki Akaike, Masaki Otagiri, Toru Maruyama
Hydrogen sulfide (H2S) signaling involves polysulfide (RSSnSR') formation on various proteins. However, the current lack of sensitive polysulfide detection assays poses methodological challenges for understanding sulfane sulfur homeostasis and signaling. We developed a novel combined assay by modifying Sulfide Antioxidant Buffer (SAOB) to produce an "Elimination Method of Sulfide from Polysulfide" (EMSP) treatment solution that liberates sulfide, followed with methylene blue (MB) sulfide detection assay. The combined EMSP-MB sulfide detection assay performed on low molecular weight sulfur species showed that sulfide was produced from trisulfide compounds such as glutathione trisulfide and diallyl trisulfide, but not from the thiol compounds such as cysteine, cystine and glutathione...
May 29, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28410617/treatment-with-high-dose-n-3-pufas-has-no-effect-on-platelet-function-coagulation-metabolic-status-or-inflammation-in-patients-with-atherosclerosis-and-type-2-diabetes
#14
Malgorzata Poreba, Magdalena Mostowik, Aleksander Siniarski, Renata Golebiowska-Wiatrak, Krzysztof Piotr Malinowski, Maciej Haberka, Ewa Konduracka, Jadwiga Nessler, Anetta Undas, Grzegorz Gajos
BACKGROUND: Despite numerous studies on cardioprotective effects of omega-3 polyunsaturated fatty acids (n-3 PUFAs), there is limited evidence for n-3 PUFA-mediated effects, especially at its higher dose, on cardiovascular risk in patients with type 2 diabetes (DM2) and established atherosclerosis. PURPOSE: To investigate the effect of daily treatment with a higher dose (2 g) of n-3 PUFAs on platelet function, coagulation parameters, fibrin clot properties, markers of systemic inflammation and metabolic status, in patients with atherosclerotic vascular disease and DM2 who receive optimal medical therapy...
April 14, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28409043/rare-presentation-of-primary-extramedullary-plasmacytoma-as-lip-lesion
#15
Mali Him, Maggie Meier, Vikas Mehta
Malignant plasma cell proliferation can be presented as part of disseminated disease of multiple myeloma, as solitary plasmacytoma of bone, or in soft tissue as extramedullary plasmacytoma. Extramedullary plasmacytomas represented approximately 3% of all plasma cell proliferation. Approximately 80% of extramedullary plasmacytomas occur in the head and neck region while the other 4% occur in the skin and to a lesser extent in the lip. In this paper, we report a rare case of primary cutaneous plasmacytoma involving the lip in a 65-year-old male...
2017: Case Reports in Oncological Medicine
https://www.readbyqxmd.com/read/28408825/a-tetraethylene-glycol-coat-gives-gold-nanoparticles-long-in-vivo-half-lives-with-minimal-increase-in-size
#16
Julian Ds Willett, Marlon G Lawrence, Jennifer C Wilder, Oliver Smithies
In this study, we describe the experiments determining whether coating gold nanoparticles with tetraethylene glycol (TEG) provides pharmacologically relevant advantages, such as increased serum half-life and resistance to protein adsorption. Monodisperse TEG-coated, NaBH4-reduced gold nanoparticles with a hydrodynamic size comparable to albumin were synthesized by reducing gold chloride with NaBH4 under alkaline conditions in the presence of TEG-SH. The particles were characterized by gel electrophoresis, column chromatography, and transmission electron microscopy...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28407091/brassinosteroid-involvement-in-arabidopsis-thaliana-stomatal-opening
#17
Shin-Ichiro Inoue, Nozomi Iwashita, Yohei Takahashi, Eiji Gotoh, Eiji Okuma, Maki Hayashi, Ryohei Tabata, Atsushi Takemiya, Yoshiyuki Murata, Michio Doi, Toshinori Kinoshita, Ken-Ichiro Shimazaki
Stomata within the plant epidermis regulate CO2 uptake for photosynthesis and water loss through transpiration. Stomatal opening in Arabidopsis thaliana is determined by various factors, including blue light as a signal and multiple phytohormones. Plasma membrane transporters, including H+-ATPase, K+ channels, and anion channels in guard cells mediate these processes, and the activities and expression levels of these components determine stomatal aperture. However, the regulatory mechanisms involved in these processes are not fully understood...
April 12, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28406466/artificial-red-blood-cells-as-potential-photosensitizers-in-dye-laser-treatment-against-port-wine-stains
#18
REVIEW
Naoaki Rikihisa, Shoji Watanabe, Yoshiaki Saito, Hiromi Sakai
We suggest a novel method that uses artificial blood cells (hemoglobin vesicles, Hb-Vs) as photosensitizers in dye laser treatment (at 595-nm wavelength) for port-wine stains (i.e., capillary malformations presenting as red birthmarks) based on the results of animal experiments. As compared with human red blood cells, Hb-Vs have the same absorbance of 595 nm wavelength light and produce the same level of heat following dye laser irradiation. Small sized Hb-Vs (250 nm) distribute in the plasma phase in blood and tend to flow in the marginal zone of microvessels...
April 13, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/28401917/cooperative-roles-of-the-suprachiasmatic-nucleus-central-clock-and-the-adrenal-clock-in-controlling-circadian-glucocorticoid-rhythm
#19
Sooyoung Chung, Eun Jeong Lee, Hyo Kyeong Cha, Jeongah Kim, Doyeon Kim, Gi Hoon Son, Kyungjin Kim
The mammalian circadian timing system consists of the central clock in the hypothalamic suprachiasmatic nucleus (SCN) and subsidiary peripheral clocks in other tissues. Glucocorticoids (GCs) are adrenal steroid hormones with widespread physiological effects that undergo daily oscillations. We previously demonstrated that the adrenal peripheral clock plays a pivotal role in circadian GC rhythm by driving cyclic GC biosynthesis. Here, we show that the daily rhythm in circulating GC levels is controlled by bimodal actions of central and adrenal clockwork...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28401359/ultrastructure-of-fat-body-cells-and-malpighian-tubule-cells-in-overwintering-scoliopteryx-libatrix-noctuoidea
#20
Saška Lipovšek, Franc Janžekovič, Tone Novak
The herald moths, Scoliopteryx libatrix, overwinter in hypogean habitats. The ultrastructure of their fat body (FB) cells and Malpighian tubule (MT) epithelial cells was studied by light microscopy and transmission electron microscopy, and essential biometric and biochemical measurements were performed. The FB was composed of adipocytes and sparse urocytes. The ultrastructure of both cells did not change considerably during this natural starvation period, except for rough endoplasmic reticulum (rER) which became more abundant in March females...
April 11, 2017: Protoplasma
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