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https://www.readbyqxmd.com/read/28431127/cytomegalovirus-cmv-kinetics-following-primary-infection-in-healthy-women
#1
Michael S Forman, Dhananjay Vaidya D, Oluwaseyi Bolorunduro, Marie Diener-West, Robert F Pass, Ravit Arav-Boger
The kinetics of CMV DNA in infected asymptomatic hosts are largely unknown. We measured viral load (VL) in 124 fluid samples (oral, urine, vaginal, blood) collected from 21 women who acquired CMV. A quantitative real-time PCR of US17, which correlated with clinical assays, was used. VL decreased following primary infection in all fluids. The geometric mean VL of vaginal fluid was significantly higher than that of other sources: oral (3.89 95% CI [1.43 - 10.57]), urine (6.36 95% CI [2.48 - 16.32]) and whole blood (11...
April 18, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28427421/cerebrospinal-fluid-csf-biomarkers-of-iron-status-are-associated-with-csf-viral-load-antiretroviral-therapy-and-demographic-factors-in-hiv-infected-adults
#2
Stephanie M Patton, Quan Wang, Todd Hulgan, James R Connor, Peilin Jia, Zhongming Zhao, Scott L Letendre, Ronald J Ellis, William S Bush, David C Samuels, Donald R Franklin, Harpreet Kaur, Jennifer Iudicello, Igor Grant, Asha R Kallianpur
BACKGROUND: HIV-associated neurocognitive disorder (HAND) remains common, despite antiretroviral therapy (ART). HIV dysregulates iron metabolism, but cerebrospinal fluid (CSF) levels of iron and iron-transport proteins in HIV-infected (HIV+) persons are largely unknown. The objectives of this study were to characterize CSF iron-related biomarkers in HIV+ adults and explore their relationships to known predictors of HAND. METHODS: We quantified total iron, transferrin and heavy-chain (H)-ferritin by immunoassay in CSF sampled by lumbar puncture in 403 HIV+ participants in a multi-center, observational study and evaluated biomarker associations with demographic and HIV-related correlates of HAND [e...
April 21, 2017: Fluids and Barriers of the CNS
https://www.readbyqxmd.com/read/28427319/mechanobiological-modelling-of-tendons-review-and-future-opportunities
#3
Mark S Thompson, M Nazri Bajuri, Hanifeh Khayyeri, Hanna Isaksson
Tendons are adapted to carry large, repeated loads and are clinically important for the maintenance of musculoskeletal health in an increasing, actively ageing population, as well as in elite athletes. Tendons are known to adapt to mechanical loading. Also, their healing and disease processes are highly sensitive to mechanical load. Computational modelling approaches developed to capture this mechanobiological adaptation in tendons and other tissues have successfully addressed many important scientific and clinical issues...
May 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28424686/mucosal-and-systemic-immune-responses-to-influenza-h7n9-antigen-ha1-2-co-delivered-intranasally-with-flagellin-or-polyethyleneimine-in-mice-and-chickens
#4
Li Song, Dan Xiong, Hongqin Song, Lili Wu, Meihua Zhang, Xilong Kang, Zhiming Pan, Xinan Jiao
Consecutive cases of human infection with H7N9 influenza viruses since 2013 in China have prompted efforts to develop an effective treatment. Subunit vaccines introduced by intranasal administration can block an infection at its primary site; flagellin (fliC) and polyethyleneimine (PEI) have been shown to be potent adjuvants. We previously generated the hemagglutinin (HA)1-2-fliC fusion protein consisting of the globular head domain (HA1-2; amino acids 62-284) of HA fused with Salmonella typhimurium fliC. In the present study, we investigated its effectiveness of both flagellin and PEI as mucosal adjuvants for the H7N9 influenza subunit vaccine...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28420425/acceleration-of-tendon-bone-healing-of-anterior-cruciate-ligament-graft-using-intermittent-negative-pressure-in-rabbits
#5
Zhengming Sun, Xiaoqing Wang, Ming Ling, Wei Wang, Yanhai Chang, Guang Yang, Xianghui Dong, Shixun Wu, Xueyuan Wu, Bo Yang, Ming Chen
BACKGROUND: The purpose of this study was to test effects of negative pressure on tendon-bone healing after reconstruction of anterior cruciate ligament (ACL) in rabbits. METHODS: Hind legs of 24 New Zealand White rabbits were randomly selected as negative pressure group and the contralateral hind legs as control. Reconstruction of the ACL was done. Joints of the negative pressure side were placed with drainage tubes connecting the micro-negative pressure aspirator...
April 18, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28420283/design-and-characteristics-of-gellan-gum-beads-for-modified-release-of-meloxicam
#6
Tomasz Osmałek, Bartłomiej Milanowski, Anna Froelich, Mirosław Szybowicz, Wojciech Białowąs, Marcin Kapela, Piotr Gadziński, Katarzyna Ancukiewicz
The aim of the presented work was to design, formulate and evaluate the properties of low-acyl gellan macro beads with the potential application as carriers for oral delivery of meloxicam (MLX) in the prophylaxis of colorectal cancer. The beads were obtained by means of ionotropic gelation technique. Calcium chloride (1.0%, 9.0 × 10(-2) M) was used as the cross-linking agent. Nine different polymer, drug and surfactant (Tween®80) mixtures were used for production of the beads. The quantitative compositions of the mixtures were generated with the application of the Design of Experiments (DoE) modulus from the STATISTICA Software...
April 19, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28419180/impact-of-gestational-nicotine-exposure-on-intrauterine-and-fetal-infection-in-a-rodent-model1
#7
Maria von Chamier, Leticia Reyes, Linda F Hayward, Mary B Brown
We investigated the interaction between prenatal nicotine exposure and intrauterine infection using established rat models. Beginning at gestation day (GD) 6, dams were continuously infused with either saline or 6 mg/kg/day nicotine (Nic). At GD 14, dams received either sterile broth or 105 CFU Mycoplasma pulmonis (MP), resulting in 4 treatment groups: Control (4 dams, 33 fetal units); MP only (5 dams, 55 fetal units); Nic only (5 dams, 61 fetal units) and Nic + MP (7 dams, 82 fetal units). At GD 18, nicotine exposure significantly increased (P ≤ 0...
April 17, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28419136/occurrence-of-leishmania-infantum-in-the-central-nervous-system-of-naturally-infected-dogs-parasite-load-viability-co-infections-and-histological-alterations
#8
Valéria da Costa Oliveira, Viviane Cardoso Boechat, Artur Augusto Velho Mendes Junior, Maria de Fátima Madeira, Luiz Claudio Ferreira, Fabiano Borges Figueiredo, Monique Paiva Campos, Francisco das Chagas de Carvalho Rodrigues, Raquel de Vasconcellos Carvalhaes de Oliveira, Maria Regina Reis Amendoeira, Rodrigo Caldas Menezes
Zoonotic visceral leishmaniasis is caused by the protozoan Leishmania infantum and little is known about the occurrence and pathogenesis of this parasite in the CNS. The aims of this study were to evaluate the occurrence, viability and load of L. infantum in the CNS, and to identify the neurological histological alterations associated with this protozoan and its co-infections in naturally infected dogs. Forty-eight Leishmania-seropositive dogs from which L. infantum was isolated after necropsy were examined...
2017: PloS One
https://www.readbyqxmd.com/read/28415434/design-and-development-of-a-hybrid-bioartificial-water-induced-shape-memory-polymeric-material-as-an-integral-component-for-the-anastomosis-of-human-hollow-organs
#9
Siriana Paonessa, Niccoletta Barbani, Elisa Cibrario Rocchietti, Claudia Giachino, Caterina Cristallini
A large number of pathologies require the resection of the bowel and anastomoses to rejoin the two remaining stumps to regain lumen patency. Various materials have been used to rejoin one bowel end to the other such as catgut, stainless steel, and absorbable sutures. The present method for anastomosis surgery uses an entero-entero anastomosis (EEA) circular stapler with only a staple line. This method can have some drawbacks, such as intracellular fluid leakage and local inflammations. The aim of this study is to design and develop a novel bioartificial polymer with a ring shape made of polyvinyl alcohol (PVA) and gelatin (80/20 ratio (w/w)) loaded both directly with acetylsalicylic acid and with nanoparticles incorporating the same drug to reduce local inflammation even for a prolonged period of time...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28415411/quality-by-design-approach-for-an-in-situ-gelling-microemulsion-of-lorazepam-via-intranasal-route
#10
Vidhi Shah, Mukesh Sharma, Radhika Pandya, Rajesh K Parikh, Bhavesh Bharatiya, Atindra Shukla, Hsieh-Chih Tsai
The present study illustrates the application of the concept of Quality by Design for development, optimization and evaluation of Lorazepam loaded microemulsion containing ion responsive In situ gelator gellan gum and carbopol 934. A novel approach involving interactions between surfactant and polymer was employed to achieve controlled drug release and reduced mucociliary clearance. Microemulsion formulated using preliminary solubility study and pseudo ternary phase diagrams showed significantly improved solubilization capacity of Lorazepam with 54...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28414519/effect-of-a-food-supplement-containing-l-methionine-on-urinary-tract-infections-in-pregnancy-a-prospective-multicenter-observational-study
#11
Mario Passaro, Giampaolo Mainini, Francesco Ambrosio, Raimondo Sgambato, Giancarlo Balbi
OBJECTIVE: Adjuvants or alternatives to antibiotics in urinary tract infections (UTIs) during pregnancy seem advisable because of possible fetal stress. The present study assessed the effectiveness of a food supplement containing L-methionine and Hibiscus sabdariffa L. and Boswellia serrata Roxb. extracts as a treatment for symptomatic UTIs in pregnancy. DESIGN: Pregnant patients with symptomatic cystitis were screened for UTIs in three different clinical centers...
April 17, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28412733/prevention-of-tumor-seeding-during-needle-biopsy-by-chemotherapeutic-releasing-gelatin-sticks
#12
Ren-Yuan Bai, Verena Staedtke, Xuewei Xia, Gregory J Riggins
Needle biopsy is an indispensable diagnostic tool in obtaining tumor tissue for diagnostic examination. Tumor cell seeding in the needle track during percutaneous needle biopsies has been reported for various types of cancers. The mechanical force of the biopsy both directly displaces the malignant cells and causes bleeding and fluid movement that can further disseminate cells. To prevent the risk of tumor cell seeding during biopsy, we developed a gelatin stick loaded with chemotherapeutics such as doxorubicin (DXR) that was inserted into the biopsy canal...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28412471/surface-modification-of-solid-lipid-nanoparticles-for-oral-delivery-of-curcumin-improvement-of-bioavailability-through-enhanced-cellular-uptake-and-lymphatic-uptake
#13
Jong-Suep Baek, Cheong-Weon Cho
Curcumin has been reported to exhibit potent anticancer effects. However, poor solubility, bioavailability and stability of curcumin limit its in vivo efficacy for the cancer treatment. Solid lipid nanoparticles (SLN) are a promising delivery system for the enhancement of bioavailability of hydrophobic drugs. However, burst release of drug from SLN in acidic environment limits its usage as oral delivery system. Hence, we prepared N-carboxymethyl chitosan (NCC) coated curcumin-loaded SLN (NCC-SLN) to inhibit the rapid release of curcumin in acidic environment and enhance the bioavailability...
April 12, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28412451/laser-treated-electrospun-fibers-loaded-with-nano-hydroxyapatite-for-bone-tissue-engineering
#14
Javier Aragon, Nuria Navascues, Gracia Mendoza, Silvia Irusta
Core-shell polycaprolactone/polycaprolactone (PCL/PCL) and polycaprolactone/polyvinyl acetate (PCL/PVAc) electrospun fibers loaded with synthesized nanohydroxyapatite (HAn) were lased treated to create microporosity. The prepared materials were characterized by XRD, FTIR, TEM and SEM. Uniform and randomly oriented beadless fibrous structures were obtained in all cases. Fibers diameters were in the 150-300nm range. Needle-like HAn nanoparticles with mean diameters of 20nm and length of approximately 150nm were mostly encase inside the fibers...
April 12, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28412222/targeted-drug-distribution-in-tumor-extracellular-fluid-of-gd2-expressing-neuroblastoma-patient-derived-xenografts-using-sn-38-loaded-nanoparticles-conjugated-to-the-monoclonal-antibody-3f8
#15
Carles Monterrubio, Sonia Paco, Nagore G Olaciregui, Guillem Pascual-Pasto, Monica Vila-Ubach, Maria Cuadrado-Vilanova, M Mar Ferrandiz, Helena Castillo-Ecija, Romina Glisoni, Nataliya Kuplennik, Achim Jungbluth, Carmen de Torres, Cinzia Lavarino, Nai-Kong V Cheung, Jaume Mora, Alejandro Sosnik, Angel M Carcaboso
Neuroblastoma is a pediatric solid tumor with high expression of the tumor associated antigen disialoganglioside GD2. Despite initial response to induction therapy, nearly 50% of high-risk neuroblastomas recur because of chemoresistance. Here we encapsulated the topoisomerase-I inhibitor SN-38 in polymeric nanoparticles (NPs) surface-decorated with the anti-GD2 mouse mAb 3F8 at a mean density of seven antibody molecules per NP. The accumulation of drug-loaded NPs targeted with 3F8 versus with control antibody was monitored by microdialysis in patient-derived GD2-expressing neuroblastoma xenografts...
April 12, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28406045/a-methacrylic-hyaluronic-acid-derivative-for-potential-application-in-oral-treatment-of-celiac-disease
#16
Giovanna Pitarresi, Fabio Salvatore Palumbo, Daniela Triolo, Calogero Fiorica, Gaetano Giammona
OBJECTIVE: Aim of this work was the synthesis of a methacrylic hyaluronic acid derivative and the production, via photocrosslinking, of related hydrogels loaded with an endopeptidase intended for a potential oral treatment of celiac disease. METHODS: The methacrylic derivative of hyaluronic acid (HA) was prepared through a one-pot procedure involving the reaction with ethylenediamine (EDA) and methacrylic anhydride (MA). The obtained derivative, named HA-EDA-MA, was used to prepare photocrosslinked hydrogels loaded with a prolyl endopeptidase derived from Flavobacterium meningosepticum (PEP FM) able to detoxify gliadin...
April 13, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28405463/the-use-of-oral-fluids-to-monitor-key-pathogens-in-porcine-respiratory-disease-complex
#17
Juan Hernandez-Garcia, Nardy Robben, Damien Magnée, Thomas Eley, Ian Dennis, Sara M Kayes, Jill R Thomson, Alexander W Tucker
BACKGROUND: The usefulness of oral fluid (OF) sampling for surveillance of infections in pig populations is already accepted but its value as a tool to support investigations of porcine respiratory disease complex (PRDC) has been less well studied. This study set out to describe detection patterns of porcine reproductive and respiratory syndrome virus (PRRSV), porcine circovirus type 2 (PCV2), swine influenza virus type A (SIV) and Mycoplasma hyopneumoniae (M. hyo) among farms showing differing severity of PRDC...
2017: Porcine Health Management
https://www.readbyqxmd.com/read/28405383/a-new-apparatus-to-induce-lysis-of-planktonic-microbial-cells-by-shock-compression-cavitation-and-spray
#18
A Schiffer, M N Gardner, R H Lynn, V L Tagarielli
Experiments were conducted on an aqueous growth medium containing cultures of Escherichia coli (E. coli) XL1-Blue, to investigate, in a single experiment, the effect of two types of dynamic mechanical loading on cellular integrity. A bespoke shock tube was used to subject separate portions of a planktonic bacterial culture to two different loading sequences: (i) shock compression followed by cavitation, and (ii) shock compression followed by spray. The apparatus allows the generation of an adjustable loading shock wave of magnitude up to 300 MPa in a sterile laboratory environment...
March 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28402143/a-ph-independent-instantaneous-release-of-flurbiprofen-a-study-of-the-preparation-of-complexes-their-characterization-and-in-vitro-vivo-evaluation
#19
Han-Bing Wang, Fei-Fei Yang, Gai Xiu-Mei, Bing-Chao Cheng, Jin-Yu Li, Hao Pan, Xing-Gang Yang, Wei-San Pan
In this study, furbiprofen/hydroxypropyl-β-cyclodextrin (HPβCD) inclusion complexes were prepared to improve the drug dissolution and facilitate its application in hydrophilic gels. Inclusion complexes were prepared using a supercritical fluid (SCF) processing and a conventional optimized co-lypholization (OCL) method was employed as a reference. The entrapment efficacy (EE) and drug loading (DL) of both methods were investigated. Evaluation of drug dissolution enhancement was conducted in deionized water as well as buffer solutions of different pH...
April 12, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28402032/furosemide-loading-test-in-a-case-of-homozygous-solute-carrier-family-12-member-1-slc12a1-mutation-g-62382825g-a-p-pro372leu-in-japanese-black-cattle
#20
Kiyotoshi Hasegawa, Shinji Sasaki, Yoichi Sakamoto, Akifumi Takano, Megumi Takayama, Tomoko Higashi, Yoshikazu Sugimoto, Yasuaki Yasuda
Hydrallantois is the excessive accumulation of fluid in the allantoic cavity in a pregnant animal and is associated with fetal death. We recently identified a recessive missense mutation in the solute carrier family 12, member 1 (SLC12A1) gene (g.62382825G>A, p.Pro372Leu) that is associated with hydrallantois in Japanese Black cattle. Unexpectedly, we found a case of the homozygous risk-allele for SLC12A1 in a calf, using a PCR-based direct DNA sequencing test. The homozygote was outwardly healthy up to 3 months of age and the mother did not exhibit any clinical symptoms of hydrallantois...
April 12, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
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