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https://www.readbyqxmd.com/read/28819664/antimicrobial-carbon-nanospheres
#1
Yao-Wen Jiang, Ge Gao, Xiaodong Zhang, Hao-Ran Jia, Fu-Gen Wu
Carbon nanomaterials have found numerous applications in various fields. However, their synthesis and functionalization usually require complicated procedures or tough experimental conditions. Herein, we report for the first time the synthesis of a new type of functional nanomaterial, quaternized carbon nanospheres (QCNSs), with superior antibacterial activity via a one-pot hydrothermal treatment of chitosan and hexadecylbetaine (abbreviated as BS-16). During the hydrothermal process, the direct reaction and carbonization between the amine-containing chitosan and the carboxyl-containing BS-16 were realized within only one step...
August 18, 2017: Nanoscale
https://www.readbyqxmd.com/read/28812532/spontaneous-experimentally-induced-and-transmissible-aa-amyloidosis-in-japanese-quail-coturnix-japonica
#2
Yumi Nakayama, Junichi Kamiie, Gen Watanabe, Kazuhiko Suzuki, Tomoaki Murakami
The authors describe a spontaneous case of amyloid A (AA) amyloidosis in an adult female Japanese quail ( Coturnix japonica). The bird developed AA amyloidosis secondary to chronic peritonitis caused by a Gram-negative bacillus infection. Mild amyloid deposition was also identified in the intestinal tract of apparently healthy adult individuals, suggesting that quail may develop intestinal amyloidosis with age. Based on these observations, it was hypothesized that quail can develop AA amyloidosis following inflammatory stimulation with lipopolysaccharide (LPS)...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28774361/-value-of-combined-determination-of-neutrophil-cd64-and-procalcitonin-in-early-diagnosis-of-neonatal-bacterial-infection
#3
Dao-Jian Qin, Zong-Sheng Tang, Shu-Li Chen, Xue-Mei Xu, Shuang-Gen Mao, Shi-Fa Zhang
OBJECTIVE: To investigate the value of combined determination of neutrophil CD64 and procalcitonin (PCT) in the early diagnosis of neonatal bacterial infection. METHODS: According to discharge diagnosis, 37 neonates with bacterial infection were divided into sepsis (n=15) and ordinary infection (non-sepsis) groups (n=22). Twenty-one neonates without infection who were hospitalized during the same period of time were enrolled as the control group. Venous blood samples were collected immediately after admission...
August 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28758635/cluster-distinguishing-genotypic-and-phenotypic-diversity-of-carbapenem-resistant-gram-negative-bacteria-in-solid-organ-transplantation-patients-a-comparative-study
#4
Theodoros Karampatakis, Anastasia Geladari, Lida Politi, Charalampos Antachopoulos, Elias Iosifidis, Olga Tsiatsiou, Aggeliki Karyoti, Vasileios Papanikolaou, Athanassios Tsakris, Emmanuel Roilides
PURPOSE: Solid-organ transplant recipients may display high rates of colonization and/or infection by multidrug-resistant bacteria. We analysed and compared the phenotypic and genotypic diversity of carbapenem-resistant (CR) strains of Klebsiella pneumoniae, Pseudomonas aeruginosa and Acinetobacter baumannii isolated from patients in the Solid Organ Transplantation department of our hospital. METHODOLOGY: Between March 2012 and August 2013, 56 CR strains from various biological fluids underwent antimicrobial susceptibility testing with VITEK 2, molecular analysis by PCR amplification and genotypic analysis with pulsed-field gel electrophoresis (PFGE)...
July 31, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28758171/qtl-mapping-for-resistance-to-iridovirus-in-asian-seabass-using-genotyping-by-sequencing
#5
Le Wang, Bin Bai, Shuqing Huang, Peng Liu, Zi Yi Wan, Baoqing Ye, Jinlu Wu, Gen Hua Yue
Identifying quantitative trait loci (QTL) for viral disease resistance is of particular importance in selective breeding programs of fish species. Genetic markers linked to QTL can be useful in marker-assisted selection (MAS) for elites resistant to specific pathogens. Here, we conducted a genome scan for QTL associated with Singapore grouper iridovirus (SGIV) resistance in an Asian seabass (Lates calcarifer) family, using a high-density linkage map generated with genotyping-by-sequencing. One genome-wide significant and three suggestive QTL were detected at LG21, LG6, LG13, and LG15, respectively...
July 31, 2017: Marine Biotechnology
https://www.readbyqxmd.com/read/28754611/transdermal-delivery-of-gentamicin-using-dissolving-microneedle-arrays-for-potential-treatment-of-neonatal-sepsis
#6
Patricia González-Vázquez, Eneko Larrañeta, Maelíosa T C McCrudden, Courtney Jarrahian, Annie Rein-Weston, Manjari Quintanar-Solares, Darin Zehrung, Helen McCarthy, Aaron J Courtenay, Ryan F Donnelly
Neonatal infections are a leading cause of childhood mortality in low-resource settings. World Health Organization guidelines for outpatient treatment of possible serious bacterial infection (PSBI) in neonates and young infants when referral for hospital treatment is not feasible include intramuscular gentamicin (GEN) and oral amoxicillin. GEN is supplied as an aqueous solution of gentamicin sulphate in vials or ampoules and requires health care workers to be trained in dose calculation or selection of an appropriate dose based on the patient's weight band and to have access to safe injection supplies and appropriate sharps disposal...
July 25, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28744310/elevated-squamous-cell-carcinoma-antigen-cytokeratin-19-fragment-and-carcinoembryonic-antigen-levels-in-diabetic-nephropathy
#7
Jianzhong Chen, Feng Tao, Bin Zhang, Qingguang Chen, Yan Qiu, Qian Luo, Yanna Gen, Jiali Meng, Jue Zhang, Hao Lu
OBJECTIVE: We aimed to explore whether squamous cell carcinoma antigen (SCC), cytokeratin 19 fragment (Cyfra21-1), neuron-specific enolase (NSE), and carcinoembryonic antigen (CEA) are elevated in diabetic nephropathy (DN) and the association between urinary albumin-to-creatinine ratio (UACR) and tumor markers in diabetic patients. METHODS: Nondialysis patients with diabetes (n = 261) and 90 healthy controls were enrolled. DN was defined as an UACR ≥ 30 mg/g in the absence of a urinary tract infection or other renal abnormalities...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28740347/chronic-hepatitis-b-nonalcoholic-steatohepatitis-and-physical-fitness-of-military-males-chief-study
#8
Yu-Jung Chen, Kai-Wen Chen, Yu-Leung Shih, Fang-Ying Su, Yen-Po Lin, Fan-Chun Meng, Felicia Lin, Yun-Shun Yu, Chih-Lu Han, Chih-Hung Wang, Jia-Wei Lin, Tsai-Yuan Hsieh, Yi-Hwei Li, Gen-Min Lin
AIM: To investigate the association of chronic hepatitis B and nonalcoholic steatohepatitis with physical fitness in a Taiwanese military male cohort. METHODS: We made a cross-sectional examination of this association using 3669 young adult military males according to cardiorespiratory fitness and hospitalization events recorded in the Taiwan Armed Forces study. Cases of chronic hepatitis B (n = 121) were defined by personal history and positive detection of hepatitis B surface antigen...
July 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28731325/bioinspired-and-biomimetic-agnps-gentamicin-embedded-silk-fibroin-coatings-for-robust-antibacterial-and-osteogenetic-applications
#9
Wenhao Zhou, Zhaojun Jia, Pan Xiong, Jianglong Yan, Yangyang Li, Ming Li, Yan Cheng, Yufeng Zheng
With the progressively increasing demand for orthopedic Ti implants, the balance between two primary complications restricting implant applications is needed to be solved: the lack of bone tissue integration and biomedical device-associated infections (BAI), where emergence of multiresistance bacteria make it worse. Notably, a combination of silver nanoparticles (AgNPs) and a kind of antibiotic can synergistically inhibit bacterial growth, where a low concentration of AgNPs has been confirmed to promote the proliferation and osteogenesis of osteoblasts...
August 9, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28679521/use-of-nucleic-acid-amplification-testing-for-the-diagnosis-of-extragenital-sexually-transmitted-infections-naat-detection-of-stis-in-rectal-and-pharyngeal-swabs
#10
Lisa A Cosentino, Claire S Danby, Lorna K Rabe, Ingrid Macio, Leslie A Meyn, Harold C Wiesenfeld, Sharon L Hillier
Nucleic acid amplification testing (NAAT) is the preferred method to detect Chlamydia trachomatis and Neisseria gonorrhoeae, but no commercial tests are cleared by the US Food and Drug Administration for use with extragenital swab samples. This study evaluated the performance of Gen-Probe Aptima® Combo2 assay (Aptima) and the Cepheid Xpert® CT/NG assay (Xpert) to detect C.trachomatis and N. gonorrhoeae in rectal and pharyngeal samples from 224 men and 175 women reporting a history of anal receptive sexual intercourse...
July 5, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28666467/the-metabolic-footprint-of-the-airway-bacterial-community-in-cystic-fibrosis
#11
Vaishnavi Narayanamurthy, John M Sweetnam, Darcy R Denner, Lena W Chen, Edward T Naureckas, Bharathi Laxman, Steven R White
BACKGROUND: Progressive, chronic bacterial infection of the airways is a leading cause of death in cystic fibrosis (CF). Culture-independent methods based on sequencing of the bacterial 16S rRNA gene describe a distinct microbial community that decreases in richness and diversity with disease progression. Understanding the functional characteristics of the microbial community may aid in identifying potential therapies and may assist in management, but current methods are cumbersome. Here, we demonstrate the use of an oxidative metabolic assay as a complement to sequencing methods to describe the microbiome in the airways of patients with CF...
June 30, 2017: Microbiome
https://www.readbyqxmd.com/read/28639577/characteristics-of-good-s-syndrome-in-china-a-systematic-review
#12
REVIEW
Jin-Pei Dong, Wen Gao, Gui-Gen Teng, Yu Tian, Hua-Hong Wang
BACKGROUND: Good's syndrome (GS) is a rare disease characterized by thymoma, hypogammaglobulinemia, low or absent B-cells, decreased T-cells, an inverted CD4+/CD8+ T-cell ratio and reduced T-cell mitogen proliferative responses. GS is difficult to diagnose preoperatively due to its rarity and lack of typical symptoms, the characteristics of Chinese GS patients are still lacking. This study aimed to systematically review all the clinical, laboratory, and immunologic findings of reported cases of Chinese patients with GS...
July 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28620151/reproductive-innovation-and-the-recognition-of-a-new-genus-within-the-polystomatidae-monogenea-infecting-chelonian-vertebrates
#13
Richard C Tinsley
Polystomatid monogeneans have a wide diversity of life cycles correlated with the varied ecology and behaviour of their aquatic vertebrate hosts. Typically, transmission involves a swimming infective larva but most hosts are amphibious and invasion is interrupted when hosts leave water. A key life cycle adaptation involves a uterus that, in the most specialised cases, may contain several hundred fully-developed larvae prepared for instant host-to-host transmission. By contrast, one subfamily of the Polystomatidae - the Polystomoidinae, specific to chelonians (freshwater turtles) - has a simplified reproductive system without a uterus...
June 7, 2017: Folia Parasitologica
https://www.readbyqxmd.com/read/28618183/effects-of-different-temperature-regimes-on-survival-of-diaphorina-citri-and-its-endosymbiotic-bacterial-communities
#14
Mubasher Hussain, Komivi Senyo Akutse, Keppanan Ravindran, Yongwen Lin, Bamisope Steve Bamisile, Muhammad Qasim, Chandra Kanta Dash, Liande Wang
The Asian citrus psyllid, Diaphorina citri, is a major pest of citrus and vector of citrus greening (huanglongbing) in Asian. In our field-collected psyllid samples, we discovered that Fuzhou (China) and Faisalabad (Pakistan), populations harbored an obligate primary endosymbiont Candidatus Carsonella (gen. nov.) with a single species, Candidatus Carsonella ruddii (sp. nov.), and a secondary endosymbiont, Wolbachia surface proteins (WSP) which are intracellular endosymbionts residing in the bacteriomes. Responses of these symbionts to different temperatures were examined and their host survival assessed...
June 15, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28608019/the-benefits-of-a-wound-protector-in-preventing-incisional-surgical-site-infection-in-elective-open-digestive-surgery-a-large-scale-cohort-study
#15
Keita Itatsu, Yukihiro Yokoyama, Gen Sugawara, Satoaki Kamiya, Masaki Terasaki, Atsushi Morioka, Shinsuke Iyomasa, Kazuhisa Shirai, Masahiko Ando, Masato Nagino
BACKGROUND: The objective of this study was to evaluate the benefits of wound protectors (WPs) in preventing incisional surgical site infection (I-SSI) in open elective digestive surgery using data from a large-scale, multi-institutional cohort study. METHODS: Patients who had elective digestive surgery for malignant neoplasms between November 2009 and February 2011 were included. The protective value of WPs against I-SSI was evaluated. RESULTS: A total of 3201 patients were analyzed...
June 12, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28551328/association-of-expression-of-the-hedgehog-signal-with-merkel-cell-polyomavirus-infection-and-prognosis-of-merkel-cell-carcinoma
#16
Teruyuki Kuromi, Michiko Matsushita, Takeshi Iwasaki, Daisuke Nonaka, Satoshi Kuwamoto, Keiko Nagata, Masako Kato, Gen Akizuki, Yukisato Kitamura, Kazuhiko Hayashi
Merkel cell carcinoma (MCC) is an aggressive neuroendocrine skin cancer that mostly occurs in the elderly. Merkel cell polyomavirus (MCPyV) is detected in approximately 80% of MCCs and is associated with carcinogenesis. Hedgehog signaling pathway plays a role in human embryogenesis and organogenesis. In addition, reactivation of this pathway later in life can cause tumors. 29 MCPyV-positive and 21 MCPyV-negative MCCs were immunohistochemically stained with primary antibodies for hedgehog signaling (SHH, IHH, PTCH1, SMO, GLI1, GLI2, and GLI3) and evaluated using H-score...
May 24, 2017: Human Pathology
https://www.readbyqxmd.com/read/28536801/induced-membrane-technique-using-beta-tricalcium-phosphate-for-reconstruction-of-femoral-and-tibial-segmental-bone-loss-due-to-infection-technical-tips-and-preliminary-clinical-results
#17
Gen Sasaki, Yoshinobu Watanabe, Wataru Miyamoto, Youichi Yasui, Shota Morimoto, Hirotaka Kawano
PURPOSE: This study aimed to provide preliminary evidence regarding effectiveness of grafting beta-tricalcium phosphate (β-TCP) combined with a cancellous autograft for treating nonunion of long bones in the lower extremity due to infection by evaluating clinical and radiological outcomes. METHODS: We retrospectively reviewed the clinical and radiological results in seven patients (six men, one woman; median age 39 years) treated by the induced membrane technique for nonunion of the femur or tibia due to infection...
May 24, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28507921/sofosbuvir-based-regimens-with-task-shifting-is-cost-effective-in-expanding-hepatitis-c-treatment-access-in-the-united-states
#18
Channa R Jayasekera, Rachel Beckerman, Nathaniel Smith, Ryan B Perumpail, Robert J Wong, Zobair M Younossi, Aijaz Ahmed
Background and Aims: The current paradigm of specialist physician-managed treatment of chronic hepatitis C virus infection (HCV) is inefficient in absorbing the approximately 3 million patients awaiting treatment in the United States. Task shifting-whereby specialist physicians screen patients for treatment eligibility but on-treatment monitoring is devolved to more abundant non-physician clinicians-achieves non-inferior treatment outcomes with second generation direct-acting antivirals (2(nd) Gen DAAs), may increase treatment capacity, and may facilitate greater treatment access...
March 28, 2017: Journal of Clinical and Translational Hepatology
https://www.readbyqxmd.com/read/28484864/genome-wide-association-study-identifies-loci-associated-with-resistance-to-viral-nervous-necrosis-disease-in-asian-seabass
#19
Le Wang, Peng Liu, Shuqing Huang, Baoqing Ye, Elaine Chua, Zi Yi Wan, Gen Hua Yue
Viral nervous necrosis disease (VNN), caused by nervous necrosis virus (NNV), is one major threat to mariculture. Identifying loci and understanding the mechanisms associated with resistance to VNN are important in selective breeding programs. We performed a genome-wide association study (GWAS) using genotyping-by-sequencing (GBS) to study the genomic architecture of resistance to NNV infection in Asian seabass. We genotyped 986 individuals from 43 families produced by 15 founders with 44498 bi-allelic genetic variants using GBS...
May 8, 2017: Marine Biotechnology
https://www.readbyqxmd.com/read/28443247/evaluation-of-a-new-ifn-%C3%AE-release-assay-for-rapid-diagnosis-of-active-tuberculosis-in-a-high-incidence-setting
#20
Gen Li, Feng Li, Hui-Min Zhao, Han-Li Wen, Hai-Cong Li, Chun-Ling Li, Ping Ji, Peng Xu, Kang Wu, Zhi-Dong Hu, Shui-Hua Lu, Douglas B Lowrie, Jian-Xin Lv, Xiao-Yong Fan
Blood-based interferon-gamma (IFN-γ) release assays (IGRAs) have been proven to be useful in the diagnosis of Mycobacterium tuberculosis (Mtb) infection. However, IGRAs have not been recommended for clinical practice in most low-income settings due to cost-intensive limitations and shortage of clinical data available. The established T-SPOT. TB assay containing Mtb-specific antigens ESAT-6 and CFP10 are widely used for immunodiagonsis of Mtb infection, but the high cost is one of the restricting factors against its clinical application in the developing countries...
2017: Frontiers in Cellular and Infection Microbiology
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