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https://www.readbyqxmd.com/read/29452422/asynchronous-and-pathological-windows-of-implantation-two-causes-of-recurrent-implantation-failure
#1
P Sebastian-Leon, N Garrido, J Remohí, A Pellicer, P Diaz-Gimeno
STUDY QUESTION: Is endometrial recurrent implantation failure (RIF) only a matter of an asynchronous (displaced) window of implantation (WOI), or could it also be a pathological (disrupted) WOI? SUMMARY ANSWER: Our predictive results demonstrate that both displaced and disrupted WOIs exist and can present independently or together in the same RIF patient. WHAT IS KNOWN ALREADY: Since 2002, many gene expression signatures associated with endometrial receptivity and RIF have been described...
February 14, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29452417/fruit-production-and-branching-density-affect-shoot-and-whole-tree-wood-to-leaf-biomass-ratio-in-olive
#2
Adolfo Rosati, Andrea Paoletti, Raeed Al Hariri, Franco Famiani
The amount of shoot stem (i.e., woody part of the shoot) dry matter per unit shoot leaf dry matter (i.e., the shoot wood to leaf biomass ratio) has been reported to be lower in short shoots than in long ones, and this is related to the greater and earlier ability of short shoots to export carbon. This is important in fruit trees, since the greater and earlier carbon export ability of shoots with a lower wood to leaf biomass ratio improves fruit production. This ratio may vary with cultivars, training systems or plant age, but no study has previously investigated the possible effect of fruit production...
February 14, 2018: Tree Physiology
https://www.readbyqxmd.com/read/29452406/negative-association-between-sclerostin-and-insl3-in-isolated-human-osteocytes-and-in-klinefelter-syndrome-new-hints-for-testis-bone-crosstalk
#3
Andrea Di Nisio, Luca De Toni, Maria Santa Rocca, Marco Ghezzi, Riccardo Selice, Giuseppe Taglialavoro, Alberto Ferlin, Carlo Foresta
Context/Objective: The regulation of bone mass by the testis is a well-recognized mechanism, but the role of Leydig-specific marker insuline-like 3 peptide (INSL3) on the most abundant bone cell population, osteocytes, is unknown. In this study we aimed to investigate the relationship between INSL3 and Sclerostin, an osteocyte-specific protein that negatively regulates bone formation. Design/Setting: Serum sclerostin and INSL3 levels were evaluated in Klinefelter Syndrome (KS) and healthy controls...
February 14, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29452292/prevalence-risk-factors-and-genetic-characterization-of-toxoplasma-gondii-in-sick-pigs-and-stray-cats-in-jiangsu-province-eastern-china
#4
Zhao-Feng Hou, Shi-Jie Su, Dan-Dan Liu, Le-le Wang, Chuan-Li Jia, Zhen-Xing Zhao, Yi-Fei Ma, Qiao-Qiao Li, Jin-Jun Xu, Jian-Ping Tao
Toxoplasma gondii is an obligate intracellular parasitic protozoan with a worldwide distribution. The parasites in edible tissues of pigs and oocysts from cats are the major sources of T. gondii infection in humans. However, there are no data from sick pigs in veterinary clinics or from stray cats in Jiangsu Province, eastern China. In total, biological samples from 141 sick pigs and 64 stray cats were collected from this region. The rate of T. gondii infection in sick pigs was 46.81% using a polymerase chain reaction (PCR), and the overall prevalence of toxoplasmosis in stray cats was 34...
February 13, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29452288/repetitive-tlr-3-activation-in-the-lung-induces-skeletal-muscle-adaptations-and-cachexia
#5
Ted G Graber, Brandy L Rawls, Bing Tian, William J Durham, Camille R Brightwell, Allan R Brasier, Blake B Rasmussen, Christopher S Fry
Due to immunosenescence, older adults are particularly susceptible to lung-based viral infections, with increased severity of symptoms in those with underlying chronic lung disease. Repeated respiratory viral infections produce lung maladaptations, accelerating pulmonary dysfunction. Toll like 3 receptor (TLR3) is a membrane protein that senses exogenous double-stranded RNA to activate the innate immune response to a viral infection. Polyinosinic-polycytidylic acid [poly(I:C)] mimics double stranded RNA and has been shown to activate TLR3...
February 13, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29452233/role-of-adipose-tissue-derived-stem-cells-differentiated-into-insulin-producing-cells-in-the-treatment-of-type-i-diabetes-mellitus
#6
Mona G Amer, Azza S Embaby, Rehab A Karam, Marwa G Amer
Generation of new β cells is an important approach in the treatment of type 1 diabetes mellitus (type 1 DM). Adipose tissue-derived stem cells (ADSCs) might be one of the best sources for cell replacement therapy for diabetes. Therefore, this work aimed to test the possible role of transplanted insulin-producing cells (IPCs) differentiated from ADSCs in treatment of streptozotocin (STZ) induced type I DM in rats. Type 1 DM was induced by single intra peritoneal injection with STZ (50 mg/kg BW). Half of the diabetic rats were left without treatment and the other half were injected with differentiated IPCs directly into the pancreas...
February 13, 2018: Gene
https://www.readbyqxmd.com/read/29452218/tnf%C3%AE-disrupts-blood-brain-barrier-integrity-to-maintain-prolonged-depressive-like-behavior-in-mice
#7
Yuyan Cheng, Sachi Desse, Ana Martinez, Ryan J Worthen, Richard S Jope, Eleonore Beurel
Recovery from major depressive disorder is difficult, particularly in patients who are refractory to antidepressant treatments. To examine factors that regulate recovery, we developed a prolonged learned helplessness depression model in mice. After the induction of learned helplessness, mice were separated into groups that recovered or did not recover within 4 weeks. Comparisons were made between groups in hippocampal proteins, inflammatory cytokines, and blood brain barrier (BBB) permeability. Compared with mice that recovered and control mice, non-recovered mice displaying prolonged learned helplessness had greater hippocampal activation of glycogen synthase kinase-3 (GSK3), higher levels of tumor necrosis factor-α (TNFα), interleukin-17A, and interleukin-23, increased permeability of the blood brain barrier (BBB), and lower levels of the BBB tight junction proteins occludin, ZO1, and claudin-5...
February 13, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29452196/staphylococcus-aureus-induces-tgf-%C3%AE-1-and-bfgf-expression-through-the-activation-of-ap-1-and-nf-%C3%AE%C2%BAb-transcription-factors-in-bovine-mammary-epithelial-cells
#8
Jianmei Wu, Yulin Ding, Jinling Wang, Fenglong Wang
Staphylococcus aureus is a common Gram-positive pathogen that causes bovine mastitis, a persistent infection of the bovine mammary gland. Bovine mammary epithelial cells (BMEC) are important parenchymal cells of the bovine mammary gland. To better understand the importance of BMEC and the roles of the TLR-NF-κBand TLR-AP-1 signaling pathways in the regulation of S. aureus-associated mastitis and mammary fibrosis, BMEC cultured in vitro were stimulated with different concentrations of heat-inactivated S. aureus to analyze the gene and protein expression and production of toll-like receptor 2 (TLR2), toll-like receptor 4 (TLR4), transforming growth factor beta 1 (TGF-β1), basic fibroblast growth factor (bFGF) as well as the protein expression of nuclear factor-kappa B (NF-κB) and activation protein-1 (AP-1) by means of quantitative polymerase chain reaction (qPCR) and western blotting, respectively...
February 13, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29452181/the-demosponge-pseudoceratina-purpurea-as-a-new-source-of-fibrous-chitin
#9
Sonia Żółtowska-Aksamitowska, Mikhail Tsurkan, Swee-Cheng Lim, Heike Meissner, Konstantin Tabachnick, Lamiaa A Shaala, Diaa T A Youssef, Viatcheslav N Ivanenko, Iaroslav Petrenko, Marcin Wysokowski, Nicole Bechmann, Yvonne Joseph, Teofil Jesionowski, Hermann Ehrlich
Among marine demosponges (Porifera: Demospongiae), only representatives of the order Verongiida have been recognized to synthetize both biologically active substances as well as scaffolds-like fibrous skeletons made of structural aminopolysaccharide chitin. The unique 3D architecture of such scaffolds open perspectives for their applications in waste treatment, biomimetics and tissue engineering. Here, we focus special attention to the demosponge Pseudoceratina purpurea collected in the coastal waters of Singapore...
February 13, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29452111/recent-progress-in-drug-targets-and-inhibitors-towards-combating-leishmaniasis
#10
REVIEW
Vijayakumar Saravanan, Pradeep Das
Lesihmaniasis is one of the major neglected tropical disease caused by the parasite of the genus Leishmania. The disease has more than one clinical forms and the visceral form is considered fatal. With the lack of potential vaccine, chemotherapy is the major treatment source considered for the control of the disease in the infected people. Drugs including amphotericin B and miltefosine are widely used for the treatment, however, development of resistance by the parasite towards the administered drug and high-toxicity of the drug are of major concern...
February 13, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29451983/reinforcing-mucus-barrier-properties-with-low-molar-mass-chitosans
#11
Sujit Kootala, Luimar Filho, Vaibhav Srivastava, Victoria Linderberg, Amani Moussa, Laurent David, Stéphane Trombotto, Thomas Crouzier
The mucus gel covers the wet epithelia that forms the inner lining of the body. It constitutes our first line of defense protecting the body from infections and other deleterious molecules. Failure of the mucus barrier can lead to the inflammation of the mucosa such as in inflammatory bowel diseases. Unfortunately, there are no effective strategies that reinforce the mucus barrier properties to recover or enhance its ability to protect the epithelium. Herein, we describe a mucus engineering approach that addresses this issue where we physically crosslink the mucus gel with low molar mass chitosan variants to reinforce its barrier functions...
February 16, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29451918/manipulation-of-the-rhizosphere-microbial-community-through-application-of-a-new-bio-organic-fertilizer-improves-watermelon-quality-and-health
#12
Jia Zhao, Jiang Liu, Hong Liang, Jing Huang, Zhe Chen, Yuanjun Nie, Changbiao Wang, Yuguo Wang
Bio-organic fertilizers (BOFs) combine functional microbes with a suitable substrate and have been shown to effectively suppress soil-borne diseases and promote plant growth. Here, we developed a novel bio-organic fertilizer (BOF) by fermentation of a cow plus chicken manure (M) compost using Fen-liquor Daqu (FLD) as a fermentation starter and compared the compositions of bacterial and fungal communities in the rhizosphere soil of watermelon plants after treatment with different fertilizers. Further, we aimed to explore the mechanisms underlying plant-promoting and disease (Fusarium wilt)-suppressing activities of each rhizosphere microbial community...
2018: PloS One
https://www.readbyqxmd.com/read/29451842/protective-effect-of-leaf-ethanolic-extract-etlingera-hemisphaerica-blume-against-mercuric-chloride-toxicity-in-blood-of-mice
#13
Aceng Ruyani, Rendi Zulni Eka Putri, Pauzi Jundara, Efri Gresinta, Irwandi Ansori, Agus Sundaryono
This research was intended to investigate the protective effect of leaf ethanolic extract Etlingera hemisphaerica Blume (LE3H) against mercuric chloride (HgCl 2 ) toxicity in blood of mice (Mus musculus). The experimental animals, 95 male M. musculus, received drink and food ad libitum. Three materials were tested: LE3H (0.13, 0.26, 0.39 mg/g body weight [bw]) was administered by gavage; HgCl 2 (5 mg/kg bw) was administrated by gavage or intraperitoneal injection; and Imunos (the nutritional supplement to stimulate the immune system; 0...
February 16, 2018: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/29451722/enhanced-photodynamic-therapy-by-reduced-intracellular-glutathione-levels-employing-nano-mof-with-cu-ii-as-active-center
#14
Wei Zhang, Jun Lu, Xiaonan Gao, Ping Li, Wen Zhang, Yu Ma, Hui Wang, Bo Tang
In photodynamic therapy (PDT), the level of reactive oxygen species (ROS) produced in the cell directly determines therapeutic effect. Therefore, the development of photosensitizers combining the ability of reducing GSH levels through synergistically improving ROS concentration to strengthen the efficacy of PDT for tumor is important. We report a nano-metal-organic framework based on Cu (II) as active center for PDT. This MOF-2 is readily uptaken by breast cancer cells, and high-level ROS is generated under light irradiation...
February 16, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29451721/sodium-glucose-co-transporter-2-sglt2-inhibitors-as-add-on-therapy-to-insulin-for-type-1-diabetes-mellitus-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#15
Tomohide Yamada, Nobuhiro Shojima, Hisashi Noma, Toshimasa Yamauchi, Takashi Kadowaki
New treatments for type 1 diabetes are an unmet need. We investigated the efficacy and safety of adding SGLT-2is to insulin for type 1 diabetes by meta-analysis of prospective randomized, placebo-controlled trials. Searching electronic databases up to October 2017 identified 1361 studies, among which 14 were investigated (N=4,591). Meta-analysis revealed that SGLT-2i therapy significantly reduced HbA1c by 0.4% (95% confidence interval [CI]: 0.35, 0.46; P<0.001; I2=0%), fasting plasma glucose by 1.14 mmol/l (0...
February 16, 2018: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/29451708/promotion-of-bone-regeneration-on-titanium-implants-through-a-chemical-treatment-process-using-calcium-phosphate-slurry-microscopic-analysis-cellular-response-and-animal-experiment
#16
Tatsuro Ito, Naofumi Ohtsu, Masanari Tomozawa, Mitsuhiro Hirano, Hiroko Takita, Tadashi Iizuka, Atsuro Yokoyama
The present study provides scientific evidence that a new chemical treatment process using calcium phosphate slurry promotes bone regeneration on titanium (Ti) implants. The material's surface modified by the treatment was analyzed using microscopic observation and the bone regeneration efficacy was evaluated both in vitro and in vivo. Formation of a thin hydroxyapatite layer with a thickness of about 50 nm and an increase of surface roughness were confirmed by microscopic observations. Histological evaluation of rat femora implanted with the specimens showed that the areas of the specimens directly attached to bone tissue were significantly more extensive than those implanted with control Ti at 2 and 8 weeks...
February 16, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29451681/verification-of-a-physiologically-based-pharmacokinetic-model-of-ritonavir-to-estimate-drug-drug-interaction-potential-of-cyp3a4-substrates
#17
Ken-Ichi Umehara, Felix Huth, Christina S Won, Tycho Heimbach, Handan He
Ritonavir is one of several ketoconazole alternatives used to evaluate strong CYP3A4 inhibition potential in clinical drug-drug interaction (DDI) studies. In this study, four physiologically-based pharmacokinetic (PBPK) models of ritonavir as an in vivo time-dependent inhibitor of CYP3A4 were created and verified for the oral doses of 20, 50, 100 and 200 mg using fraction absorbed (Fa) and oral clearance (CLoral) values reported in the literature, as transporter and CYP enzyme reaction phenotyping data were not available...
February 16, 2018: Biopharmaceutics & Drug Disposition
https://www.readbyqxmd.com/read/29451523/-towards-new-therapeutic-paradigms-beyond-symptom-control-in-the-management-of-inflammatory-bowel-diseases
#18
Stefano Festa, Giulia Zerboni, Annalisa Aratari, Riccardo Ballanti, Claudio Papi
Inflammatory bowel diseases, Crohn's disease and ulcerative colitis are chronic relapsing conditions that may result in progressive bowel damage, high risk of complications, surgery and permanent disability. The conventional therapeutic approach for inflammatory bowel diseases is based mainly on symptom control. Unfortunately, a symptom-based therapeutic approach has little impact on major long-term disease outcomes. In other chronic disabling conditions such as diabetes, hypertension and rheumatoid arthritis, the development of new therapeutic approaches has led to better outcomes...
January 2018: Recenti Progressi in Medicina
https://www.readbyqxmd.com/read/29451520/-hepatitis-c-virus-infection-from-clinical-guidelines-to-clinical-practice-and-personalization-of-cure
#19
Pierluigi Toniutto
Although clinical guidelines provide clear indications on the treatment of patients with chronic HCV related liver disease, there are still clinical situations in which clinicians experience and judgment remain essential in the proper patient management. These are mainly represented by antiviral therapy in patients with decompensated liver disease, especially if they are candidates for liver transplantation or with significant comorbidities and complex pharmacological therapies. Antiviral retreatment of patients who failed a regimen containing an NS5A protease inhibitor still appears to be a delicate context in which no solid recommendations are provided, especially in patients with HCV genotype 3 and decompensated cirrhosis...
January 2018: Recenti Progressi in Medicina
https://www.readbyqxmd.com/read/29451518/-access-to-hepatitis-c-treatment-a-lesson-for-the-future
#20
Lucia Craxì
The new generation of direct acting antivirals (DAA) for the treatment of chronic hepatitis C virus infection has revolutionized the previous scenario and has put the institutions under test because of the high cost of therapies. An analysis of what has happened over the last three years, especially in Italy, helps us understand how price negotiation has been managed, and what criteria were chosen at first to allow limited access on the basis of the need of patient care. This allows to focus on some important issues and to identify the challenges ahead in the near future...
January 2018: Recenti Progressi in Medicina
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