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https://www.readbyqxmd.com/read/28432585/patterns-of-care-and-treatment-outcomes-in-older-adults-with-low-grade-glioma-a-50-year-experience
#1
Ryan S Youland, David A Schomas, Paul D Brown, Ian F Parney, Nadia N I Laack
The purpose of this study was to identify changes in presentation, treatment and outcomes of older patients with low-grade glioma (LGG) over the past 50 years. 94 adults aged 55 or older upon diagnosis of a WHO grade II LGG at Mayo Clinic between 1960 and 2011 were included and grouped by those diagnosed before (group I: 1960-1989) and after (group II: 1990-2011) the routine use of post-operative MRI. Median follow-up was 11.4 years. Pathologic diagnoses included astrocytoma in 55%, mixed oligoastrocytoma in 18% and oligodendroglioma in 27%...
April 21, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28432584/clinical-features-and-long-term-outcomes-of-pediatric-spinal-meningiomas
#2
Liang Wu, Chenlong Yang, Tie Liu, Jingyi Fang, Jun Yang, Yulun Xu
Pediatric spinal meningiomas are very rare. Most studies on pediatric spinal meningiomas are case reports with literature reviews. This study presented a surgical series of 14 pediatric patients with histologically proven sporadic spinal meningiomas, including 5 WHO grade II tumors. In this series, there were 9 male and 5 female patients with a mean age of 11.1 years. Seven tumors were located in the cervical spine, 5 in the thoracic spine, and 2 in the lumbar spine. Gross total resection (GTR) of the tumor with a well-demarcated dissection plane was achieved in 11 cases, subtotal resection was achieved in 2 cases, and partial resection was performed in 1 case...
April 21, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28429270/degradation-of-streptomycin-in-aquatic-environment-kinetics-pathway-and-antibacterial-activity-analysis
#3
Yanru Shen, Wenyan Zhao, Chunling Zhang, Yujie Shan, Junxian Shi
Streptomycin used in human and veterinary medicine is released into the environment mainly through excretions. As such, its elimination in water should be investigated to control pollution. In this study, the degradation of streptomycin in water was studied, and the influence of variables, including light exposure, solution pH, temperature, ionic strength, dissolved organic matter (DOM), and coexisting surfactants, on degradation was investigated. Streptomycin degradation was consistent with the first-order model in aquatic environments...
April 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28427986/prognostic-implications-of-extent-of-resection-in-glioblastoma-analysis-from-a-large-database
#4
Daniel M Trifiletti, Clayton Alonso, Surbhi Grover, Camilo E Fadul, Jason P Sheehan, Timothy N Showalter
OBJECTIVE: To analyze the predictors for and clinical impact of gross total resection (GTR) in patients with glioblastoma (GBM). METHODS AND MATERIALS: The National Cancer Database was queried for patients with GBM diagnosed from 2004-2013 with known survival and extent of resection. Patients were grouped based on extent of resection into biopsy alone, subtotal resection (STR), and GTR. Univariable and multivariable (MVA) analyses were performed to investigate factors associated with the likelihood of GTR and overall survival (OS) following diagnosis...
April 17, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28419878/effect-of-gross-total-resection-gtr-in-who-grade-ii-astrocytomas-a-seer-based-survival-analysis
#5
Alexander J Schupper, Brian R Hirshman, Kate T Carroll, Mir Amaan Ali, Bob S Carter, Clark C Chen
INTRODUCTION: We wished to compare the survival benefit associated with gross total resection (GTR) in World Health Organization (WHO) grade II astrocytomas (A2) to those of grade III (A3) and grade IV (glioblastoma) astrocytomas. METHODS: Using the Surveillance, Epidemiology, and End Results (SEER) Program (1999-2010) database, we identified 4,113 A2 patients. Surgical resection was defined as GTR, subtotal resection (STR), or no resection. Kaplan-Meier and multivariate Cox proportional hazards analyses were used to assess survival with respect to extent of resection (EOR)...
April 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28416281/population-structure-of-han-nationality-in-central-southern-china
#6
Qiu-Ling Liu, Ye-Fei Chen, Xin He, Yan-Wei Shi, Wei-Wei Wu, Hu Zhao, De-Jian Lu
Knowledge of population structure is very important for forensic genetics. However, the population substructure in Central-Southern China Han nationality has still not been fully described. In this study, we investigated the genetic diversity of 15 forensic autosomal STR loci from 6879 individuals in 12 Han populations subdivided by administrative provinces in Central-Southern China. The statistical analysis of genetic variation showed that genetic differentiation among these populations was very small with a Fst value of 0...
April 4, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28413971/structure-of-c-terminal-domain-of-peptidyl-prolyl-cis-trans-isomerase-from-pseudomonas-syringae-pv-tomato-str-dc3000-at-1-6%C3%A3-resolution
#7
Yu Gao, Hong-Mei Zhang, Piwu Wang, Mei Li
Peptidyl-prolyl cis-trans isomerase (PPIase) catalyses the conversion between the cis and trans configurations of proline which switches the backbone conformation of peptides. We determined the crystal structure of the C-terminal domain of PPIase from Pseudomonas syringae pv. tomato DC3000 (PSPTO DC3000) at 1.6Å resolution. Structural comparison of PSPTO-PPIase with its homologues suggested that the successive arrangement of residues with small side-chain in loop 4 contributes to its substrate specificity...
April 13, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28412872/chinese-xibe-population-genetic-composition-according-to-linkage-groups-of-x-chromosomal-strs-population-genetic-variability-and-interpopulation-comparisons
#8
Hao-Tian Meng, Chun-Mei Shen, Yu-Dang Zhang, Qian Dong, Yu-Xin Guo, Guang Yang, Jiang-Wei Yan, Yao-Shun Liu, Ting Mei, Jian-Feng Shi, Bo-Feng Zhu
BACKGROUND: The Xibe population is one of China's officially recognised populations and is now distributed separately from west to east in the northern part of China. X-chromosomal short tandem repeats have a special inheritance pattern, and could be used as complements in forensic application especially for complex or deficiency cases. SUBJECTS AND METHODS: We obtained the allelic and haplotypic frequencies of 19 X-STR loci in the Xibe population from Xinjiang Uygur Autonomous Region, China, and studied the genetic differentiations between the Xibe and other populations...
April 16, 2017: Annals of Human Biology
https://www.readbyqxmd.com/read/28410009/studies-in-the-antrodia-serialis-group-polyporales-basidiomycota
#9
Viacheslav Spirin, Josef Vlasák, Otto Miettinen
Taxonomy and phylogeny of the Antrodia serialis group are revised with morphological, ecological, and geographic data, partial translation elongation factor 1-α (tef1) gene sequences, and nuc rDNA ITS1-5.8S-ITS2-28S sequences. The group contains 13 species found in boreal and temperate zones of the Northern Hemisphere. The species are limited to certain geographic areas within Eurasia and North America. The traditional morphology-based concept of A. serialis covers at least four closely related species: A...
March 1, 2017: Mycologia
https://www.readbyqxmd.com/read/28409264/a-study-of-the-bodrogk%C3%A3-z-population-in-north-eastern-hungary-by-y-chromosomal-haplotypes-and-haplogroups
#10
Horolma Pamjav, Á Fóthi, T Fehér, Erzsébet Fóthi
We have determined the distribution of Y chromosomal haplotypes and haplogroups in population samples from one of the most important areas in north-eastern Hungary from many villages in the Bodrogköz. The Bodrogköz region was chosen due to its isolated nature, because this area was a moorland encircled by the Tisza, Bodrog, and Latorca Rivers and inhabitants of this part of Hungary escaped from both Tatar and Ottoman invasions, which decimated the post-Hungarian Conquest populations in many parts of the country...
April 13, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/28405752/genetic-characterization-of-an-x-str-decaplex-system-in-the-state-of-mato-grosso-brazil-distribution-forensic-efficiency-and-population-structure
#11
Joyce A Martins, Denise P Martins, Camila I F Oliveira-Brancati, Juliana Martinez, Regina M B Cicarelli, Dorotéia R S Souza
Studies with X-STR loci show population genetic substructure, which makes necessary the characterization of such markers in the different geographical and/or ethnic populations. Therefore, this study assessed the distribution and forensic efficiency of an X-STR decaplex system in the population of the State of Mato Grosso, as well as analysed the population structure of this State based on the aforementioned system. All X-STR markers were in Hardy-Weinberg equilibrium and linkage equilibrium, and the DXS6809 was the most informative marker...
April 12, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28405751/developmental-validation-of-a-6-dye-str-kit-with-27-loci
#12
Shuanglin Li, Ling Chen, Yanfang Wang, Quyi Xu, Hong Liu, Yue Li, Chao Liu
The EX27 System is a 6-dye (i.e., FAM, HEX, TAMAR, ROX, VIG, and SIZ-500) kit that combines the 24 autosomal STR loci (i.e., D3S1358, D13S317, D7S820, D16S539, D1S1656, Penta E, TPOX, TH01, D2S1338, CSF1PO, Penta D, D10S1248, D19S433, vWA, D21S11, D18S51, D6S1043, D8S1179, D5S818, D12S391, FGA, D22S1045, D2S441, SE33) with a Y-STR locus (DYS391), an Indel site (YIndel) and Amelogenin, which is designed to amplify DNA from extracts as well as direct amplification from substrates. The new system contains most of the widely used autosomal STR loci around the world and is sensitive to the male component in mixtures and is more accurate in gender determination owing to the DYS391 and YIndel...
April 12, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28401988/a-rapid-nuclear-staining-test-using-cationic-dyes-contributes-to-efficient-str-analysis-of-telogen-hair-roots
#13
So-Yeon Lee, Eun-Ju Ha, Seung-Kyun Woo, So-Min Lee, Kyung-Hee Lim, Yong-Bin Eom
Telogen hairs presented in the crime scene are commonly encountered as trace evidence. However, short tandem repeat (STR) profiling of the hairs currently have low and limited use due to poor success rate. To increase the success rate of STR profiling of telogen hairs, we developed a rapid and cost-effective method to estimate the number of nuclei in the hair roots. Five cationic dyes, Methyl green (MG), Harris hematoxylin (HH), Methylene blue (MB), Toluidine blue (TB) and Safranin O (SO) were evaluated in this study...
April 12, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28401303/evaluation-of-forensic-genetic-parameters-of-12-str-loci-in-the-korean-population-using-the-investigator-%C3%A2-hdplex-kit
#14
Ju Yeon Jung, Eun Hye Kim, Yu-Li Oh, Hyun-Chul Park, Jung Ho Hwang, Si-Keun Lim
We genotyped and calculated the forensic parameters of 10 non-CODIS loci and 2 CODIS loci of 990 Korean individuals using the Investigator(Ⓡ) HDplex kit. No significant deviations from Hardy-Weinberg equilibrium (after Bonferroni correction for multiple testing) or genetic linkage disequilibrium were observed. The calculated matching probability and power of discrimination ranged from 0.0080 to 0.2014, and 0.7986 to 0.9920, respectively. We conclude that the markers of the kit are highly informative corroborative tools for forensic DNA analysis...
April 11, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28401080/comparison-of-the-frequency-of-y-short-tandem-repeats-markers-between-sadat-and-non-sadat-populations-in-isfahan-province-of-iran
#15
Reihaneh Seyedebrahimi, Ebrahim Esfandiari, Bahman Rashidi, Rasoul Salehi, Ali Gholami Dahghi, Shahriar Dabiri, Majid Kheirollahi
BACKGROUND: Y chromosome is one of the two sex chromosomes and is male specific. Due to limited genetic exchange, the main part of that is passed virtually unchanged from one generation to next generation. The short tandem repeats (STRs) are almost constant on chromosomes that make them as an appropriate factor for use in population genetic studies. In this study, we used the STRs of Y chromosome markers in Sadat families and comparison with other families was investigated. MATERIALS AND METHODS: In this study, sampling was done from fifty unrelated males of Sadat families and fifty unrelated males of non-Sadat families...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28401070/simple-and-easy-to-perform-preimplantation-genetic-diagnosis-for-%C3%AE-thalassemia-major-using-combination-of-conventional-and-fluorescent-polymerase-chain-reaction
#16
Rasoul Salehi, Sharifeh Khosravi, Mansour Salehi, Majid Kheirollahi, Hossein Khanahmad
BACKGROUND: Thalassemias are the most common monogenic disorders in many countries throughout the world. The best practice to control the prevalence of the disease is prenatal diagnosis (PND) services. Extensive practicing of PND proved effective in reducing new cases but on the other side of this success high abortion rate is hided, which ethically unfair and for many couples, especially with a previous experience of a therapeutic abortion, or moral concerns, is not a suitable choice...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28399438/internal-validation-of-the-dnascan-ande%C3%A2-rapid-dna-analysis%C3%A2-platform-and-its-associated-powerplex-%C3%A2-16-high-content-dna-biochip-cassette-for-use-as-an-expert-system-with-reference-buccal-swabs
#17
Lilliana I Moreno, Alice L Brown, Thomas F Callaghan
Rapid DNA platforms are fully integrated systems capable of producing and analyzing short tandem repeat (STR) profiles from reference sample buccal swabs in less than two hours. The technology requires minimal user interaction and experience making it possible for high quality profiles to be generated outside an accredited laboratory. The automated production of point of collection reference STR profiles could eliminate the time delay for shipment and analysis of arrestee samples at centralized laboratories...
March 31, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28399259/effect-of-rickettsia-felis-strain-variation-on-infection-transmission-and-fitness-in-the-cat-flea-siphonaptera-pulicidae
#18
Sean P Healy, Lisa D Brown, Melena R Hagstrom, Lane D Foil, Kevin R Macaluso
Rickettsia felis is a human pathogen transmitted by the cat flea, Ctenocephalides felis (Bouché) (str. LSU), as well as an obligate symbiont of the parthenogenic booklouse Liposcelis bostrychophila (Badonnel) (str. LSU-Lb). The influence of genetic variability in these two strains of R. felis on host specialization and fitness and possible resulting differences on infection and transmission kinetics in C. felis is unknown. Utilizing an artificial host system, cat fleas were exposed to a R. felis str. LSU-Lb-infected bloodmeal and monitored for infection at 7-d intervals for 28 d...
March 2, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28397234/-analysis-of-genetic-polymorphisms-and-mutations-of-20-frequently-used-str-loci-among-ethnic-hans-from-henan
#19
Hongdan Wang, Bing Kang, Yue Gao, Xiaodong Huo, Tao Li, Qiannan Guo, Bofeng Zhu, Shixiu Liao
OBJECTIVE: To study the genetic polymorphisms and mutations of 20 frequently used autosomal microsatellites among ethnic Hans from Henan. METHODS: Peripheral blood samples of 2604 individuals were collected. DNA was amplified and genotyped using a PowerPlex(TM) 21 system. The frequencies, forensic parameters and mutation rates of the 20 short tandem repeat (STR) loci were analyzed. RESULTS: A total of 323 alleles were found in this population and the allelic frequencies have ranged from 0...
April 10, 2017: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
https://www.readbyqxmd.com/read/28394651/reference-thresholds-for-the-ten-hl-test-for-people-with-normal-hearing
#20
Andreas S Hansen, Øyvind Raen, Brian C J Moore
OBJECTIVE: To estimate normative values and repeatability of thresholds for the TEN(HL) test for diagnosing dead regions in the cochlea, as a function of signal frequency, TEN(HL) level, age and gender. DESIGN: The TEN(HL) test was administered twice for each ear of each participant using signal frequencies from 0.5 to 4 kHz and TEN(HL) levels of 30, 50 and 70 dB HL/ERBN. STUDY SAMPLE: In all, 29 young participants and 8 older participants were tested...
April 10, 2017: International Journal of Audiology
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