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https://www.readbyqxmd.com/read/29791806/seasonal-dynamics-of-bacterioplankton-community-in-a-large-shallow-highly-dynamic-freshwater-lake
#1
Zhaoyu Kong, Wenbo Kou, Yantian Ma, Haotian Yu, Gang Ge, Lan Wu
The spatio-temporal shifts of bacterioplankton community can mirror their transition of functional traits in aquatic ecosystem. However, our understanding of spatio-temporal variation of bacterioplankton community composition structure (BCCs) within large, shallow and highly dynamic freshwater lake is still elusive. Here we examined the seasonal and spatial variability of BCCs in the Poyang Lake by 16S rRNA gene amplicon sequencing to explore how hydrological changes affect the BCCs. Principal coordinate analysis showed that the BCCs varied significantly among four sampling seasons, but not spatially...
May 23, 2018: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/29740758/spray-freeze-drying-a-suitable-method-for-aerosol-delivery-of-antibodies-in-the-presence-of-trehalose-and-cyclodextrins
#2
Maryam Amini Pouya, Behnaz Daneshmand, Shabnam Aghababaie, Homa Faghihi, Alireza Vatanara
We aimed to prepare spray-freeze-dried powder of IgG considering physicochemical stability and aerodynamic aspects. Spray-freeze drying (SFD) exposes proteins to various stresses which should be compensated by suitable stabilizers. The competence of cyclodextrins (CDs), namely beta-cyclodextrin (βCD) and hydroxypropyl βCD (HPβCD), at very low concentrations, was investigated in the presence of separate mannitol- and trehalose-based formulations. Spray-freeze-dried preparations were quantified in terms of monomer recovery and conformation by size exclusion chromatography (SEC-HPLC) and Fourier transform infrared (FTIR) spectroscopy, respectively...
May 8, 2018: AAPS PharmSciTech
https://www.readbyqxmd.com/read/29720234/two-independent-proteomic-approaches-provide-a-comprehensive-analysis-of-the-synovial-fluid-proteome-response-to-autologous-chondrocyte-implantation
#3
Charlotte H Hulme, Emma L Wilson, Heidi R Fuller, Sally Roberts, James B Richardson, Pete Gallacher, Mandy J Peffers, Sally L Shirran, Catherine H Botting, Karina T Wright
BACKGROUND: Autologous chondrocyte implantation (ACI) has a failure rate of approximately 20%, but it is yet to be fully understood why. Biomarkers are needed that can pre-operatively predict in which patients it is likely to fail, so that alternative or individualised therapies can be offered. We previously used label-free quantitation (LF) with a dynamic range compression proteomic approach to assess the synovial fluid (SF) of ACI responders and non-responders. However, we were able to identify only a few differentially abundant proteins at baseline...
May 2, 2018: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29714398/impact-of-human-platelet-lysate-on-the-expansion-and-chondrogenic-capacity-of-cultured-human-chondrocytes-for-cartilage-cell-therapy
#4
J G Sykes, J H Kuiper, J B Richardson, S Roberts, K T Wright, N J Kuiper
High hopes have been pinned on regenerative medicine strategies in order to prevent the progression of cartilage damage to osteoarthritis, particularly by autologous chondrocyte implantation (ACI). The loss of chondrocyte phenotype during in vitro monolayer expansion, a necessary step to obtain sufficient cell numbers, may be a key limitation in ACI. In this study, it was determined whether a shorter monolayer expansion approach could improve chondrogenic differentiation. The effects of two supplement types, foetal bovine serum (FBS) and Stemulate™ (a commercial source of human platelet lysate), on the expansion and re-differentiation potential of human chondrocytes, isolated from five individuals, were compared...
May 1, 2018: European Cells & Materials
https://www.readbyqxmd.com/read/29691830/stem-cells-in-osteochondral-tissue-engineering
#5
Eleonora Pintus, Matteo Baldassarri, Luca Perazzo, Simone Natali, Diego Ghinelli, Roberto Buda
Mesenchymal stem cells (MSCs) are pluripotent stem cells with the ability to differentiate into a variety of other connective tissue cells, such as chondral, bony, muscular, and tendon tissue. Bone marrow-derived MSCs are pluripotent cells that can differentiate among others into osteoblasts, adipocytes and chondrocytes.Bone marrow-derived cells may represent the future in osteochondral repair. A one-step arthroscopic technique is developed for cartilage repair, using a device to concentrate bone marrow-derived cells and collagen powder or hyaluronic acid membrane as scaffolds for cell support and platelet gel...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29689370/dissolution-of-fine-particle-fraction-from-truncated-anderson-cascade-impactor-with-an-enhancer-cell
#6
Justin Yong Soon Tay, Celine Valeria Liew, Paul Wan Sia Heng
Dissolution testing for inhalers were previously conducted either on unfractionated drug-carrier powders or drug of specific aerodynamic particle size. In this study, the collection of the full fine particle fraction (FPF) was attempted on a single stage. Capsules containing 30 mg of 2% salbutamol sulfate (SS) was tested to have a FPF of 9 ± 1% using the full set of Andersen cascade impactor (ACI) and a modified Rotahaler® capable of achieving 4.0 kPa pressure drop at 60 L/min air flow rate. A truncated ACI comprising the USP throat, pre-separator, stage 0, stage 4, stage F, polytetrafluoroethylene funnel (TF) and small collection plate (sCP) was found to be capable of achieving a FPF of 9% collected on TF and sCP...
April 21, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29681762/correlation-of-high-risk-soft-tissue-sarcoma-biomarker-expression-patterns-with-outcome-following-neoadjuvant-chemoradiation
#7
John M Kane, Anthony Magliocco, Qiang Zhang, Dian Wang, Alex Klimowicz, Jonathan Harris, Jeff Simko, Thomas DeLaney, William Kraybill, David G Kirsch
Background: Sarcoma mortality remains high despite adjuvant chemotherapy. Biomarker predictors of treatment response and outcome could improve treatment selection. Methods: Tissue microarrays (TMAs) were created using pre- and posttreatment tumor from two prospective trials (MGH pilot and RTOG 9514) of neoadjuvant/adjuvant MAID chemotherapy and preoperative radiation. Biomarkers were measured using automated computerized imaging (AQUA or ACIS). Expression was correlated with disease-free survival (DFS), distant disease-free survival (DDFS), and overall survival (OS)...
2018: Sarcoma
https://www.readbyqxmd.com/read/29674362/implementation-of-an-evidence-based-model-of-care-for-low-back-pain-in-emergency-departments-protocol-for-the-sydney-health-partners-emergency-department-shaped-trial
#8
Gustavo C Machado, Bethan Richards, Chris Needs, Rachelle Buchbinder, Ian A Harris, Kirsten Howard, Kirsten McCaffery, Laurent Billot, James Edwards, Eileen Rogan, Rochelle Facer, David Lord Cowell, Chris G Maher
INTRODUCTION: Patients with low back pain often seek care in emergency departments, but the problem is that many patients receive unnecessary or ineffective interventions and at the same time miss out on the basics of care, such as advice on self-management. This pattern of care has important consequences for the healthcare system (expensive and inefficient) and for patients (poor health outcomes). We hypothesised that the implementation of an evidence-based model of care for low back pain will improve emergency care by reducing inappropriate overuse of tests and treatments and improving patient outcomes...
April 19, 2018: BMJ Open
https://www.readbyqxmd.com/read/29672434/assessment-of-cartilage-growth-after-biopsy-of-osteochondral-loose-bodies-in-adolescent-knees-for-use-in-autologous-chondrocyte-implantation
#9
Sean Robinson, Jonathan Kramer, Trevor Shelton, Jarrad Merriman, Brian Haus
BACKGROUND: The goal of this study is to determine whether harvested cartilage from an osteochondral loose body maintains the same viability for implantation as cartilage harvested from the traditional locations within the adolescent knee for autologous chondrocyte implantation (ACI). METHODS: A retrospective study was performed on all ACI procedures performed from 2014 to 2017 at a single institution. Biopsies were derived from 2 groups: osteochondral loose body verses the intercondylar notch...
April 18, 2018: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29667636/-the-distribution-of-2-dimethylamino-ethyl-1-hydroxycyclopentyl-phenyl-acetate-in-the-organism-of-the-warm-blooded-animals-after-its-intra-gastric-administration
#10
V K Shormanov, M F Pravdyuk, V Yu Kuzovlev, N V Shabunina
The objective of the present study was to elucidate the distribution of 2-(dimethylamino)ethyl-(1-hydroxycyclopentyl)(phenyl)acetate in the organism of the warm-blooded animals after its intra-gastric administration. The methods applied in the study included thin layer chromatography in silicagel, aci-nitroprosalt staining reaction, UV-spectrophotometry,, and GC-mass spectrometry. The identification and the quantitation of 2-(dimethylamino)ethyl-(1-hydroxycyclopentyl)(phenyl)acetate in the organs and blood of the warm-blooded animals were carried out within 20, 150, and 360 min after a single intra-gastric administration of 1300 ml of this poisonous substance...
2018: Sudebno-meditsinskaia Ekspertiza
https://www.readbyqxmd.com/read/29665833/intervention-using-vitamin-d-for-elevated-urinary-albumin-in-type-2-diabetes-mellitus-ideal-2-study-study-protocol-for-a-randomised-controlled-trial
#11
Shahrad Taheri, Muhammad Asim, Hassan Al Malki, Omar Fituri, Manikkam Suthanthiran, Phyllis August
BACKGROUND: The prevalence of type 2 diabetes mellitus (T2DM) is increasing worldwide. T2DM is associated with serious macro- and microvascular complications. In particular, diabetic kidney disease (DKD), which begins with excessive urinary albumin excretion, has a significant impact on affected individuals and is costly to healthcare services. Inhibition of the renin-angiotensin-aldosterone system (RAAS) with angiotensin converting enzyme inhibitors (ACEI) or angiotensin receptor blockers (ARB) significantly reduces albuminuria in diabetes, but this effect is not observed in all those treated...
April 17, 2018: Trials
https://www.readbyqxmd.com/read/29619397/treatment-of-failed-articular-cartilage-reconstructive-procedures-of-the-knee-a-systematic-review
#12
REVIEW
Joseph D Lamplot, Kevin A Schafer, Matthew J Matava
Background: Symptomatic articular cartilage lesions of the knee are common and are being treated surgically with increasing frequency. While many studies have reported outcomes following a variety of cartilage restoration procedures, few have investigated outcomes of revision surgery after a failed attempt at cartilage repair or reconstruction. Purpose: To investigate outcomes of revision cartilage restoration procedures for symptomatic articular cartilage lesions of the knee following a previously failed cartilage reconstructive procedure...
March 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29615027/comparative-efficacy-of-chinese-herbal-injections-for-treating-acute-cerebral-infarction-a-network-meta-analysis-of-randomized-controlled-trials
#13
Shi Liu, Jia-Rui Wu, Dan Zhang, Kai-Huan Wang, Bing Zhang, Xiao-Meng Zhang, Di Tan, Xiao-Jiao Duan, Ying-Ying Cui, Xin-Kui Liu
BACKGROUND: Chinese herbal injections (CHIs) are prepared by extracting and purifying effective substances from herbs (or decoction pieces) using modern scientific techniques and methods. CHIs combined with aspirin + anticoagulants + dehydrant + neuroprotectant (AADN) are believed to be effective for the treatment of acute cerebral infarction (ACI). However, no randomized controlled trial (RCT) has been performed to directly compare the efficacies of different regimens of CHIs. Therefore, we performed a systematic review and network meta-analysis (NMA) to compare the efficacies of different regimens of CHIs for ACI...
April 3, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29600684/-current-advances-on-surgical-treatment-for-knee-articular-cartilage-injuries
#14
REVIEW
Long Xin, Chun Zhang, Wei-Xing Xu, Fu-Hua Zhong, Shun-Wu Fan, Zhen-Bin Wang
Chondral injuries are short of self-healing ability and need to surgical repair after articular cartilage injury. Conventional treatment includes debridement and drainage under arthroscope, micro-fracture, osteochondral autograft transplantation (OATS), mosaiplasty and osteochondral allografts (OCA), autologous chondrocyte implantation (ACI). Debridement and drainage could remove pain factor, and has advantages of simple operation, wide clinical application and early clinical effect. Micro-fracture and osteochondral autograft transplantation is suitable for small area of cartilage repair, while the further effect showed that fibrous cartilage permeated by drill could decrease postoperative clinical effect...
March 25, 2018: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29594783/enhanced-molecular-dynamics-methods-applied-to-drug-design-projects
#15
Sonia Ziada, Abdennour Braka, Julien Diharce, Samia Aci-Sèche, Pascal Bonnet
Nobel Laureate Richard P. Feynman stated: "[…] everything that living things do can be understood in terms of jiggling and wiggling of atoms […]." The importance of computer simulations of macromolecules, which use classical mechanics principles to describe atom behavior, is widely acknowledged and nowadays, they are applied in many fields such as material sciences and drug discovery. With the increase of computing power, molecular dynamics simulations can be applied to understand biological mechanisms at realistic timescales...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29594231/radiotherapy-dose-distribution-to-the-perirectal-fat-space-prs-is-related-to-gastrointestinal-control-related-complications
#16
S L Gulliford, S Ghose, M A Ebert, A Kennedy, J Dowling, J Mitra, D J Joseph, J W Denham
Traditionally rectal symptoms following pelvic/prostate radiotherapy are correlated to the dosimetry of the anorectum or a substructure of this. It has been suggested that the perirectal fat space (PRS) surrounding the rectum may also be relevant. This study considers the delineation and dosimetry of the PRS related to both rectal bleeding and control-related toxicity. Initially, a case-control cohort of 100 patients from the RADAR study were chosen based on presence/absence of rectal control-related toxicity...
December 2017: Clinical and Translational Radiation Oncology
https://www.readbyqxmd.com/read/29577272/effect-of-a-tissue-selective-estrogen-complex-tsec-on-breast-cancer-role-of-unique-properties-of-conjugated-equine-estrogen
#17
Wei Yue, Jiping Wang, Kristen A Atkins, Lisa Bottalico, Clementina Mesaros, Ian A Blair, Richard J Santen
The Women's Health Initiative studies reported that the menopausal hormone therapy (MHT) regimen containing conjugated equine estrogen (CEE) and medroxyprogesterone acetate increased, whereas CEE alone reduced breast cancer incidence. These observations suggest the possibility that CEE might exert unique actions on breast and also suggest the need to eliminate the progestogen from MHT regimens. A MHT regimen called a tissue selective estrogen complex (TSEC), containing CEE plus bazedoxifene (BZA), to avoid the need for a progestogen, was developed and FDA approved...
March 25, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29562586/correlation-between-antiplatelet-therapy-in-secondary-prevention-of-acute-cerebral-infarction-and-cerebral-microbleeds-a-susceptibility-weighted-imaging-swi-study
#18
Caiyun Jia, Ci Wei, Ming Hu, Jing Xu, Kun Niu, Chao Zhang, Peiyuan Lv, Ling Li, Yanhong Dong
OBJECTIVE: To investigate the clinical significance of antiplatelet aggregation therapy for patients diagnosed with acute cerebral infarction (ACI) complicated with the cerebral microbleeds (CMBs). METHODS: Thirty patients with ACI and 36 patients with intracerebral hemorrhage (ICH) were included in this research. Two groups, studied by susceptibility-weighted imaging (SWI), were compared in terms of the number, location, and severity of CMBs. Then, 30 cases of ACI patients were divided into CMBs sub-group and non-CMBs sub-group...
March 15, 2018: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/29560629/-acupuncture-reduces-acute-cerebral-ischemia-by-suppressing-local-and-peripheral-inflammation-and-regulating-expression-of-cerebral-protein-silent-information-regulator-factor-2-related-enzyme-1-and-nuclear-factor-%C3%AE%C2%BAb-in-rats
#19
Qiong Wang, Wei Huang, Hong-Yang Wu
OBJECTIVE: To observe the effect of acupuncture on the expression of silent information regulator factor 2-related enzyme 1 (SIRT 1) and nuclear factor-κB (NF-κB) in rats with acute cerebral ischemia (ACI), so as to explore its mechanisms underlying improvement of ACI. METHODS: One hundred female SD rats were randomly divided into 5 groups: normal control (normal), sham-operation (sham), model, non-acupoint and acupoint, with 20 rats in each. The ACI model was established by occlusion (electric coagulation) of the middle cerebral artery after craniotomy...
March 25, 2018: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/29558928/the-relationship-between-poor-nutritional-status-and-progression-of-aortic-calcification-in-patients-on-maintenance-hemodialysis
#20
Teppei Okamoto, Shingo Hatakeyama, Hirotake Kodama, Hirotaka Horiguchi, Yuka Kubota, Koichi Kido, Masaki Momota, Shogo Hosogoe, Yoshimi Tanaka, Tooru Takashima, Fumitada Saitoh, Tadashi Suzuki, Chikara Ohyama
BACKGROUND: Although aortic calcification has a significant negative impact on prognosis in patients on hemodialysis (HD), risk factors for aortic calcification progression remain unclear. The aim of this study was to investigate the relationship between malnutrition and aortic calcification progression in patients on HD. METHODS: Between April 2015 and October 2016, we treated 232 patients on HD. Of those, we retrospectively evaluated data from 184 patients who had had regular blood tests and computed tomography (CT) scans...
March 20, 2018: BMC Nephrology
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