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Biochemistry*

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https://www.readbyqxmd.com/read/28922767/photosynthetic-and-metabolic-acclimation-to-repeated-drought-events-play-key-roles-in-drought-tolerance-in-coffee
#1
Paulo E Menezes-Silva, Lilian M V P Sanglard, Rodrigo T Ávila, Leandro E Morais, Samuel C V Martins, Priscilla Nobres, Camila M Patreze, Marcio A Ferreira, Wagner L Araújo, Alisdair R Fernie, Fábio M DaMatta
Over the last decades, most information on the mechanisms underlying tolerance to drought has been gained by considering this stress as a single event that happens just once in the life of a plant, in contrast to what occurs under natural conditions where recurrent drought episodes are the rule. Here we explored mechanisms of drought tolerance in coffee (Coffea canephora) plants from a broader perspective, integrating key aspects of plant physiology and biochemistry. We show that plants exposed to multiple drought events displayed higher photosynthetic rates, which were largely accounted for by biochemical rather than diffusive or hydraulic factors, than those submitted to drought for the first time...
July 10, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28921432/demonstration-scale-high-cell-density-fermentation-of-pichia-pastoris
#2
Wan-Cang Liu, Ping Zhu
Pichia pastoris has been one of the most successful heterologous overexpression systems in generating proteins for large-scale production through high-cell-density fermentation. However, optimizing conditions of the large-scale high-cell-density fermentation for biochemistry and industrialization is usually a laborious and time-consuming process. Furthermore, it is often difficult to produce authentic proteins in large quantities, which is a major obstacle for functional and structural features analysis and industrial application...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28921410/vyacheslav-slava-klimov-1945-2017-a-scientist-par-excellence-a-great-human-being-a-friend-and-a-renaissance-man
#3
Suleyman I Allakhverdiev, Sergey K Zharmukhamedov, Margarita V Rodionova, Vladimir A Shuvalov, Charles Dismukes, Jian-Ren Shen, James Barber, Göran Samuelsson, Govindjee
Vyacheslav Vasilevich (V.V.) Klimov (or Slava, as most of us called him) was born on January 12, 1945 and passed away on May 9, 2017. He began his scientific career at the Bach Institute of Biochemistry of the USSR Academy of Sciences (Akademy Nauk (AN) SSSR), Moscow, Russia, and then, he was associated with the Institute of Photosynthesis, Pushchino, Moscow Region, for about 50 years. He worked in the field of biochemistry and biophysics of photosynthesis. He is known for his studies on the molecular organization of photosystem II (PSII)...
September 18, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28921399/artesunate-inhibits-renal-ischemia-reperfusion-stimulated-lung-inflammation-in-rats-by-activating-ho-1-pathway
#4
Zhaohui Liu, Junjie Zhang, Shitong Li, Jihong Jiang
Artesunate (AS), a semi-synthetic derivative of Artemisia, has been shown to exert a wide range of pharmacological effects, such as anti-inflammatory and antioxidant functions. However, the protective functions of AS on renal ischemia reperfusion injury (RIR)-stimulated lung inflammation remain unclear. In this research, acute lung injury (ALI) was stimulated by renal ischemia reperfusion injury (RIR). AS (15 mg/kg) was intraperitoneal administrated to rat 1 h before RIR stimulation. Serum and pulmonary NO, MDA, IL-6, MIP-2, and PGE2 levels, arterial blood gas and biochemistry, lung wet/dry weight ratio and MPO activity, total cell number and protein concentration in BALF, tissue histology, and NF-κB expression were determined...
September 18, 2017: Inflammation
https://www.readbyqxmd.com/read/28920818/biochemistry-panel-reference-intervals-for-juvenile-goldfish-carassius-auratus
#5
Laura A Adamovicz, Macy R Trosclair, Gregory A Lewbart
Reference intervals for diagnostic tests are vitally important for clinical decision making. Despite the popularity of pet goldfish (Carassius auratus), reference intervals have not been generated for routine biochemistry panel analytes in this species. This study establishes de novo reference intervals for packed cell volume and total solids, using 47 apparently healthy immature goldfish, and for 11 common chemistry panel analytes (albumin, aspartate aminotransferase, calcium, creatine kinase, globulin, blood glucose, sodium, potassium, phosphorous, total protein, and uric acid) using 39 immature goldfish...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28920787/calcinosis-circumscripta-in-a-cohort-of-related-juvenile-african-lions-panthera-leo
#6
Kendra L Bauer, Samantha J Sander, James C Steeil, Timothy F Walsh, Donald L Neiffer
Three juvenile, genetically related African lions (Panthera leo) were evaluated for discrete dome-shaped subcutaneous masses present over the proximal lateral metatarsal-tarsal area. The lesions measured 3-8 cm in diameter, were fluctuant to firm, nonulcerated, and attached to underlying structures. On radiographic evaluation, the lesions were characterized by well-circumscribed punctate mineralizations in the soft tissue surrounded by soft tissue swelling without evidence of adjacent bony involvement. On cut surface, the lesions were made of numerous loculi containing 2-5-mm round-to-ovoid, white-to-gray, firm structures interspersed with fibrous tissue and pockets of serosanguinous fluid...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28920784/treatment-success-in-three-andean-bears-tremarctos-ornatus-with-alopecia-syndrome-using-oclacitinib-maleate-apoquel%C3%A2
#7
Gabby J Drake, Tim Nuttall, Javier López, William Magnone, Antoine Leclerc, Romain Potier, Alexis Lécu, Maëlle Guézénec, Lydia Kolter, Amélie Nicolau, Karin Lemberger, Didier Pin, Sallie B Cosgrove
Andean bear (Tremarctos ornatus) alopecia syndrome (ABAS) commonly affects captive bears, particularly sexually mature females. ABAS is characterized by bilaterally symmetrical predominantly flank alopecia with or without profound pruritus and secondary bacterial and Malassezia infections. There is no effective treatment and severely affected bears have been euthanized. This paper describes the successful management of ABAS in three female Andean bears. Skin biopsies and cytology revealed a mixed dermal inflammatory infiltrate, alopecia, hyperkeratosis, and Malassezia dermatitis...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28920461/discovery-and-development-of-tramadol-for-the-treatment-of-pain
#8
Lidia Bravo, Juan Antonio Mico, Esther Berrocoso
Tramadol is an opioid drug that, unlike classic opioids, also modulates the monoaminergic system by inhibiting noradrenergic and serotoninergic reuptake. For this reason, tramadol is considered an atypical opioid. These special pharmacological characteristics have made tramadol one of the most commonly prescribed analgesic drugs to treat moderate to severe pain. Areas covered: The aim of this review is to provide a historical description of the biochemistry, pharmacokinetics and particularly, the mechanisms of action of tramadol...
September 17, 2017: Expert Opinion on Drug Discovery
https://www.readbyqxmd.com/read/28918472/a-reliable-protocol-for-colorimetric-determination-of-iron-oxide-nanoparticle-uptake-by-cells
#9
Daiana K Deda, Roberta M Cardoso, Mayara K Uchiyama, Christiane Pavani, Sergio H Toma, Mauricio S Baptista, Koiti Araki
Size, shape, and surface properties of superparamagnetic iron oxide nanoparticles (SPIONs) can influence their interaction with biological systems, particularly the incorporation by tumor cells and consequently the biological activity and efficiency in biomedical applications. Several strategies have been used to evaluate cellular uptake of SPIONs. While qualitative methods are generally based on microscopy techniques, quantitative assays are carried out by techniques such as inductively coupled plasma-mass spectrometry and flow cytometry...
September 16, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28917225/appropriate-nutritional-management-in-patients-with-impaired-mastication-and-those-with-mild-dysphagia-a-multicenter-study-of-the-usefulness-of-novel-foods-processed-and-softened-by-enzymes
#10
Takashi Higashiguchi, Akihiro Ito, Hirofumi Nishiyama, Takashi Shigematsu, Atsuko Ishikawa, Hiroyuki Kato, Shohei Iijima, Nobuyuki Kikuchi
BACKGROUND AND OBJECTIVES: Our aim was to investigate the safety of iEAT (a food that is softened by heat and enzyme homogeneous permeation) and iEAT-affected nutrition parameters, e.g., nutrition intake (calculated from the consumption rate in patients with impaired mastication and those with mild dysphagia). METHODS AND STUDY DESIGN: A multicenter, randomized, cross-over study of iEAT was conducted in 50 patients (mean age 77.0±11.0 years) with dysphagia due to Occasional aspiration (4 points on the Dysphagia Severity Scale [DSS]) or Oral problems (5 points) randomly assigned to the study diet (iEAT) or its opposite (the modified traditional [control] diet) for 1 week and then switched for 1 week to the opposing diet...
2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28912855/effect-of-transoral-endoscopic-adenoidectomy-on-peripheral-blood-t-lymphocyte-subsets-in-children-with-obstructive-sleep-apnea-hypopnea-syndrome-and-its-treatment-strategy
#11
Na Yang, Yaofeng Ji, Yin Liu
The objective of the present study was to investigate the effect of transoral endoscopic adenoidectomy on peripheral blood T lymphocyte subsets in pediatric patients with obstructive sleep apnea-hypopnea syndrome (OSAHS) and its treatment strategy. Ninety-eight pediatric patients with adenoidal hypertrophy associated with OSAHS admitted to the Department of Otolaryngology, Xuzhou Children's Hospital were selected. After admission, patients received perfected 24 h polysomnogram monitoring, routine blood examination, fasting blood biochemistry examination, T-lymphocyte subset count, 24 h ambulatory blood pressure monitoring, and nasopharyngeal computed tomography...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28912754/the-gambian-bone-and-muscle-ageing-study-baseline-data-from-a-prospective-observational-african-sub-saharan-study
#12
Ayse Zengin, Anthony J Fulford, Yankuba Sawo, Landing M Jarjou, Inez Schoenmakers, Gail Goldberg, Ann Prentice, Kate A Ward
The Gambian Bone and Muscle Ageing Study is a prospective observational study investigating bone and muscle ageing in men and women from a poor, subsistence farming community of The Gambia, West Africa. Musculoskeletal diseases, including osteoporosis and sarcopenia, form a major part of the current global non-communicable disease burden. By 2050, the vast majority of the world's ageing population will live in low- and middle-income countries with an estimated two-fold rise in osteoporotic fracture. The study design was to characterise change in bone and muscle outcomes and to identify possible preventative strategies for fracture and sarcopenia in the increasing ageing population...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28912603/novel-insight-into-streptozotocin-induced-diabetic-rats-from-the-protein-misfolding-perspective
#13
Edgar Leyva-García, Reyna Lara-Martínez, Liborio Morán-Zanabria, Cristina Revilla-Monsalve, Luis Felipe Jiménez-García, Norma Oviedo, Chiharu Murata, Eulalia Garrido-Magaña, Nelly F Altamirano-Bustamante, Myriam M Altamirano-Bustamante
Protein folding is a process of self-assembly defined by the sequence of the amino acids of the protein involved. Additionally, proteins tend to unfold, misfold and aggregate due to both intrinsic and extrinsic causes. Human islet amyloid polypeptide (hIAPP) aggregation is an early step in diabetes mellitus. However, the aggregation of rat IAPP (rIAPP) remains an open question. Adult female Sprague-Dawley rats weighing 150-250 g were divided into two groups. The experimental group (streptozotocin [STZ]) (n = 21) received an intraperitoneal injection of a single dose of 40 mg/kg STZ...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28912338/duration-of-post-operative-hypocortisolism-predicts-sustained-remission-after-pituitary-surgery-for-cushing-s-disease
#14
Prachi Ashok Kumar Bansal, Anurag Ranjan Lila, Manjunath Goroshi, Swati Jadhav, Nilesh Keshavrao Lomte, Kunal Thakkar, Atul Goel, Abhidha Shah, Shilpa S Sankhe, Naina Goel, Neelam Jaguste, Tushar Ramkrishna Bandgar, Nalini Shah
PURPOSE: Transsphenoidal surgery(TSS) is the primary treatment modality for Cushing's disease(CD). However, the predictors of post-operative remission and recurrence remain debatable. Thus, we studied the post-operative remission and long term recurrence rates, as well as their respective predictive factors. METHODS: Retrospective analysis of case records of 230 CDpatients who underwent primary microscopic TSS at our tertiary care referral center between 1987-2015was undertaken...
September 14, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28911613/proteomic-changes-associated-with-metabolic-syndrome-in-a-fructose-fed-rat-model
#15
Cheng-Chu Hsieh, Chen-Chung Liao, Yi-Chun Liao, Lucy Sun Hwang, Liang-Yi Wu, Shu-Chen Hsieh
Metabolic syndrome (MetS), characterized by a constellation of disorders such as hyperglycemia, insulin resistance, and hypertension, is becoming a major global public health problem. Fructose consumption has increased dramatically over the past several decades and with it the incidence of MetS. However, its molecular mechanisms remain to be explored. In this study, we used male Sprague-Dawley (SD) rats to study the pathological mechanism of fructose induced MetS. The SD rats were fed a 60% high-fructose diet for 16 weeks to induce MetS...
October 2016: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28911127/nutritional-status-of-children-from-low-income-countries-arriving-in-spain
#16
Moncef Belhassen-García, Virginia Velasco-Tirado, Amparo Lopez-Bernus, Juan Luis Muñoz Bellido, Antonio Muro, Miguel Cordero, Javier Pardo-Lledias
Background: Nutritional problems, anaemia and infectious diseases are the main causes of morbidity and mortality in children and adolescents in tropical and subtropical areas. The main objective of this study was to determine the nutritional status in children from low-income countries who migrated to Spain and the value of the usual biochemistry markers of nutrition in these children, as well as to evaluate the nutritional status associated with imported infectious diseases. Moreover, we evaluated the association between anaemia and nutrition problems...
September 1, 2017: International Health
https://www.readbyqxmd.com/read/28910170/the-protective-effect-of-vitamin-d-against-carbon-tetrachloride-damage-to-the-rat-liver
#17
D Özerkan, N Özsoy, K G Akbulut, S Güney, G Öztürk
We investigated the protective effect of vitamin D against liver damage caused by carbon tetrachloride (CCl4). Twenty-four male rats were divided into four equal groups: G1, untreated controls; G2, administered CCl4; G3, administered both CCl4 and vitamin D for 10 weeks; G4, administered CCl4 for 10 weeks and vitamin D for 12 weeks. At the end of experiment, intracardiac blood samples were taken and liver samples were removed. Hepatic damage due to CCl4 was assessed using biochemistry and histopathology. Glutathione (GSH) levels decreased, while malondialdehyde (MDA) levels increased in liver tissues of G2...
September 14, 2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/28905667/preliminary-pharmacokinetics-of-intravenous-and-subcutaneous-dolasetron-and-pharmacodynamics-of-subcutaneous-dolasetron-in-healthy-cats
#18
Andrea K Herndon, Jessica M Quimby, Liberty G Sieberg, Leigh Davis, Amber L Caress, Sabina Ligas, Ryan J Hansen, Luke A Wittenburg, Danial L Gustafson
Objectives The objectives were to evaluate the pharmacokinetics (PKs) of subcutaneous (SC) and intravenous (IV) dolasetron and the pharmacodynamics (PDs) of SC dolasetron in healthy cats. Methods Five cats with unremarkable complete blood count, serum biochemistry and urinalyses were utilized. In the PK study, cats received 0.8 mg/kg SC and IV dolasetron in a crossover format. Serum samples were obtained via a jugular catheter at 0, 0.25, 0.5, 1, 2, 4, 8, 12, 24, 36 and 48 h after the administration of dolasetron...
September 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28903896/the-regulatory-functions-of-pirna-piwi-in-spermatogenesis
#19
Zhi-Heng Yuan, Yan-Mei Zhao
A class of 24-32 nt PIWI-binding small noncoding RNAs (sncRNAs) termed as PIWI-interacting RNAs (piRNAs) have been identified in animal germline. Recent studies suggest that piRNA/PIWI pathway plays a critical role in both silencing of transposons and posttranscriptional regulation of mRNAs in animal germline. A study from Dr. Mofang Liu's lab in Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, reveals the physiological and pathological importance of PIWI metabolism (mouse PIWI as known as MIWI; human PIWI as HIWI) in mammalian spermatogenesis...
August 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28903822/evaluation-of-a-zinc-gluconate-neutralized-with-arginine-product-as-a-nonsurgical-method-for-sterilization-of-rhesus-macaques-macaca-mulatta
#20
Kacie N Woodward, Rebekah I Keesler, J Rachel Reader, Kari L Christe
Because rhesus macaques (Macaca mulatta) are prolific breeders, overpopulation can be problematic in both research and feral populations. Currently, the most effective contraceptive methods are hormonal control in female macaques and vasectomies in males. These methods each come with innate challenges, the foremost being the alteration of necessary hormonal patterns. In this study, we assessed the use of zinc gluconate neutralized with arginine as a novel, nonsurgical alternative to male contraception in 12 rhesus macaques...
September 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
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