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https://www.readbyqxmd.com/read/28433658/molecular-cloning-of-esr2-and-gene-expression-analysis-of-esr1-and-esr2-in-the-pituitary-gland-of-the-chinese-alligator-alligator-sinensis-during-female-reproductive-cycle
#1
Ruidong Zhang, Yanan Yin, Long Sun, Peng Yan, Yongkang Zhou, Rong Wu, Xiaobing Wu
Estrogens play critical roles in reproductive physiology via estrogen receptors (ESRs) in vertebrates, including reptiles. Chinese alligator (Alligator sinensis) is an endemic and endangered reptile species in China. In the present study, we cloned ESR2 gene from the ovary using rapid amplification of cDNA ends (RACE), investigated the spatial expression of ESRs in various tissues and temporal expression of ESRs in the pituitary glands during the reproductive cycle in Chinese alligators by quantitative real-time PCR (qPCR)...
April 19, 2017: Gene
https://www.readbyqxmd.com/read/28432860/high-ki-67-expression-is-associated-with-prolactin-secreting-pituitary-adenomas
#2
Bogdan Bălinişteanu, Anca Maria Cîmpean, Amalia Raluca Ceauşu, Ana Silvia Corlan, Eugen Melnic, Marius Raica
Pituitary adenomas represent the third most common primary intracranial tumor in neurosurgical practice. To understand the biological behaviour of the pituitary adenomas previous studies have determined the tumor proliferation rate using monoclonal antibodies targeted against the Ki-67 antigen. The aim of this study was to correlate the Ki-67 index with hormonal profiles of pituitary adenomas. The study included 50 pituitary adenoma cases. For histopathologic evaluation, the sections were stained with routine hematoxylin and eosin method...
April 22, 2017: Bosnian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28431806/gender-specific-evaluation-of-variation-of-maxillary-exposure-when-smiling
#3
Niels Christian Pausch, Dimitrios Katsoulis
INTRODUCTION: Excessive exposure of maxillary teeth when smiling can have a negative effect on the aesthetics and attractiveness of the face. The presented study was aimed to evaluate the effect of different amounts of gingival exposure on the perception of such human characteristics and qualities as age, attractiveness, gender specificity, and felt sympathy in the context of the whole face. MATERIALS AND METHODS: Forty-two participants (21 female and 21 male students of Dental Medicine) were recruited as evaluators for the study...
March 27, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28430103/genomic-characterization-of-recrudescent-plasmodium-malariae-after-treatment-with-artemether-lumefantrine
#4
Gavin G Rutledge, Ian Marr, G Khai Lin Huang, Sarah Auburn, Jutta Marfurt, Mandy Sanders, Nicholas J White, Matthew Berriman, Chris I Newbold, Nicholas M Anstey, Thomas D Otto, Ric N Price
Plasmodium malariae is the only human malaria parasite species with a 72-hour intraerythrocytic cycle and the ability to persist in the host for life. We present a case of a P. malariae infection with clinical recrudescence after directly observed administration of artemether/lumefantrine. By using whole-genome sequencing, we show that the initial infection was polyclonal and the recrudescent isolate was a single clone present at low density in the initial infection. Haplotypic analysis of the clones in the initial infection revealed that they were all closely related and were presumably recombinant progeny originating from the same infective mosquito bite...
August 15, 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28429680/the-inhibitory-effects-of-hydamtiq-a-novel-parp-inhibitor-on-growth-in-human-tumor-cell-lines-with-defective-dna-damage-response-pathways
#5
Enrico Mini, Ida Landini, Laura Lucarini, Andrea Lapucci, Cristina Napoli, Gabriele Perrone, Renato Tassi, Emanuela Masini, Flavio Moroni, Stefania Nobili
The poly(ADP-ribose) polymerase (PARP) enzymes play key roles in the regulation of cellular processes (e.g. DNA damagerepair, genomic stability). It has been shown that PARP inhibitors (PARPIs) are selectively cytotoxic against cells with dysfunctions in genes involved in DNA repair mechanisms (synthetic lethality). Drug induced PARP inhibition potentiates the activity of anticancer drugs such as 5-fluorouracil in enhancing DNA damage, whose repair involves PARP1 activity.The aim of this study was to evaluate the growth inhibitory effects of a novel PARPI, HYDAMTIQ, on human tumor cell lines characterized by different features with regard to DNA damage response pathways (BRCA mutational status, microsatellite status and ATM expression level) and degree of sensitivity/resistance to 5-fluorouracil...
April 20, 2017: Oncology Research
https://www.readbyqxmd.com/read/28428796/expression-profiling-coupled-with-in-silico-mapping-identifies-candidate-genes-for-reducing-aflatoxin-accumulation-in-maize
#6
Ramesh Dhakal, Chenglin Chai, Ratna Karan, Gary L Windham, William P Williams, Prasanta K Subudhi
Aflatoxin, produced by Aspergillus flavus, is hazardous to health of humans and livestock. The lack of information about large effect QTL for resistance to aflatoxin accumulation is a major obstacle to employ marker-assisted selection for maize improvement. The understanding of resistance mechanisms of the host plant and the associated genes is necessary for improving resistance to A. flavus infection. A suppression subtraction hybridization (SSH) cDNA library was made using the developing kernels of Mp715 (resistant inbred) and B73 (susceptible inbred) and 480 randomly selected cDNA clones were sequenced to identify differentially expressed genes (DEGs) in response to A...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28428772/molecular-characterization-of-staphylococcus-aureus-isolated-from-bovine-mastitis-and-close-human-contacts-in-south-african-dairy-herds-genetic-diversity-and-inter-species-host-transmission
#7
Tracy Schmidt, Marleen M Kock, Marthie M Ehlers
Staphylococcus aureus is one of the most common etiological agents of contagious bovine mastitis worldwide. The purpose of this study was to genetically characterize a collection of S. aureus isolates (bovine = 146, human = 12) recovered from cases of bovine mastitis and nasal swabs of close human contacts in the dairy environment. Isolates were screened for a combination of clinically significant antimicrobial and virulence gene markers whilst the molecular epidemiology of these isolates and possible inter-species host transmission was investigated using a combination of genotyping techniques...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28428274/egfr-mediates-responses-to-small-molecule-drugs-targeting-oncogenic-fusion-kinases
#8
Aria Vaishnavi, Laura Schubert, Uwe Rix, Lindsay A Marek, Anh T Le, Stephen Keysar, Magdalena J Glogowska, Matthew A Smith, Severine L Kako, Natalia J Sumi, Kurtis D Davies, Kathryn E Ware, Marileila Varella-Garcia, Eric B Haura, Antonio Jimeno, Lynn E Heasley, Dara L Aisner, Robert C Doebele
Oncogenic kinase fusions of ALK, ROS1, RET and NTRK1 act as drivers in human lung and other cancers. Residual tumor burden following treatment of ALK or ROS1+ lung cancer patients with oncogene-targeted therapy ultimately enables the emergence of drug-resistant clones, limiting the long-term effectiveness of these therapies. To determine the signaling mechanisms underlying incomplete tumor cell killing in oncogene-addicted cancer cells, we investigated the role of EGFR signaling in drug-naive cancer cells harboring these oncogene fusions...
April 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28427478/morphological-and-molecular-characteristics-of-malayfilaria-sofiani-uni-mat-udin-takaoka-n-g-n-sp-nematoda-filarioidea-from-the-common-treeshrew-tupaia-glis-diard-duvaucel-mammalia-scandentia-in-peninsular-malaysia
#9
Shigehiko Uni, Ahmad Syihan Mat Udin, Takeshi Agatsuma, Weerachai Saijuntha, Kerstin Junker, Rosli Ramli, Hasmahzaiti Omar, Yvonne Ai-Lian Lim, Sinnadurai Sivanandam, Emilie Lefoulon, Coralie Martin, Daicus Martin Belabut, Saharul Kasim, Muhammad Rasul Abdullah Halim, Nur Afiqah Zainuri, Subha Bhassu, Masako Fukuda, Makoto Matsubayashi, Masashi Harada, Van Lun Low, Chee Dhang Chen, Narifumi Suganuma, Rosli Hashim, Hiroyuki Takaoka, Mohd Sofian Azirun
BACKGROUND: The filarial nematodes Wuchereria bancrofti (Cobbold, 1877), Brugia malayi (Brug, 1927) and B. timori Partono, Purnomo, Dennis, Atmosoedjono, Oemijati & Cross, 1977 cause lymphatic diseases in humans in the tropics, while B. pahangi (Buckley & Edeson, 1956) infects carnivores and causes zoonotic diseases in humans in Malaysia. Wuchereria bancrofti, W. kalimantani Palmieri, Pulnomo, Dennis & Marwoto, 1980 and six out of ten Brugia spp. have been described from Australia, Southeast Asia, Sri Lanka and India...
April 20, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28427432/anti-human-platelet-antigen-hpa-1a-antibodies-may-affect-trophoblast-functions-crucial-for-placental-development-a-laboratory-study-using-an-in-vitro-model
#10
Mariana Eksteen, Gøril Heide, Heidi Tiller, Yan Zhou, Nora Hersoug Nedberg, Inigo Martinez-Zubiaurre, Anne Husebekk, Bjørn R Skogen, Tor B Stuge, Mette Kjær
BACKGROUND: Fetal and neonatal alloimmune thrombocytopenia (FNAIT) is a bleeding disorder caused by maternal antibodies against paternal human platelet antigens (HPAs) on fetal platelets. Antibodies against HPA-1a are accountable for the majority of FNAIT cases. We have previously shown that high levels of maternal anti-HPA-1a antibodies are associated with clinically significant reduced birth weight in newborn boys. Chronic inflammatory placental lesions are associated with increased risk of reduced birth weight and have previously been reported in connection with FNAIT pregnancies...
April 21, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28426747/metabolic-analysis-of-radioresistant-medulloblastoma-stem-like-clones-and-potential-therapeutic-targets
#11
Lue Sun, Takashi Moritake, Kazuya Ito, Yoshitaka Matsumoto, Hironobu Yasui, Hidehiko Nakagawa, Aki Hirayama, Osamu Inanami, Koji Tsuboi
Medulloblastoma is a fatal brain tumor in children, primarily due to the presence of treatment-resistant medulloblastoma stem cells. The energy metabolic pathway is a potential target of cancer therapy because it is often different between cancer cells and normal cells. However, the metabolic properties of medulloblastoma stem cells, and whether specific metabolic pathways are essential for sustaining their stem cell-like phenotype and radioresistance, remain unclear. We have established radioresistant medulloblastoma stem-like clones (rMSLCs) by irradiation of the human medulloblastoma cell line ONS-76...
2017: PloS One
https://www.readbyqxmd.com/read/28426724/cloning-retinoid-and-peroxisome-proliferator-activated-nuclear-receptors-of-the-pacific-oyster-and-in-silico-binding-to-environmental-chemicals
#12
Susanne Vogeler, Tamara S Galloway, Michail Isupov, Tim P Bean
Disruption of nuclear receptors, a transcription factor superfamily regulating gene expression in animals, is one proposed mechanism through which pollution causes effects in aquatic invertebrates. Environmental pollutants have the ability to interfere with the receptor's functions through direct binding and inducing incorrect signals. Limited knowledge of invertebrate endocrinology and molecular regulatory mechanisms, however, impede the understanding of endocrine disruptive effects in many aquatic invertebrate species...
2017: PloS One
https://www.readbyqxmd.com/read/28426424/cdna-library-construction-of-two-human-demodexspecies
#13
DongLing Niu, RuiLing Wang, YaE Zhao, Rui Yang, Li Hu, YuYang Lei, WeiChao Dan
The research of Demodex, a type of pathogen causing various dermatoses in animals and human beings, is lacking at RNA level. This study aims at extracting RNA and constructing cDNA library for Demodex. First, P. cuniculiand D. farinaewere mixed to establish homogenization method for RNA extraction. Second, D. folliculorumand D. breviswere collected and preserved in Trizol, which were mixed with D. farinaerespectively to extract RNA. Finally, cDNA library was constructed and its quality was assessed. The results indicated that for D...
June 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28426403/pcr-denaturing-gradient-gel-electrophoresis-as-a-useful-method-to-identify-of-intestinal-bacteria-flora-in-haemaphysalis-flava-ticks
#14
Tian-Yin Cheng, Guo-Hua Liu
Ticks are blood-sucking ectoparasites of great medical and veterinary significance that can transmit bacteria, protozoa, fungi and viruses, causing a variety of human and animal diseases worldwide. In the present study, the intestinal bacterial flora associated with Haemaphysalis flava ticks in different developmental stages were analyzed using polymerase chain reaction (PCR) and denaturing gradient gel electrophoresis (DGGE). Eleven distinct DGGE bands were found using PCR-DGGE method. Sequences analyses indicated that they belonged to Bacillus cereus, Candidatus rickettsia, Erwinia sp...
June 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28424684/modulation-of-human-leukocyte-antigen-c-by-human-cytomegalovirus-stimulates-kir2ds1-recognition-by-natural-killer-cells
#15
Kattria van der Ploeg, Chiwen Chang, Martin A Ivarsson, Ashley Moffett, Mark R Wills, John Trowsdale
The interaction of inhibitory killer cell Ig-like receptors (KIRs) with human leukocyte antigen (HLA) class I molecules has been characterized in detail. By contrast, activating members of the KIR family, although closely related to inhibitory KIRs, appear to interact weakly, if at all, with HLA class I. KIR2DS1 is the best studied activating KIR and it interacts with C2 group HLA-C (C2-HLA-C) in some assays, but not as strongly as KIR2DL1. We used a mouse 2B4 cell reporter system, which carries NFAT-green fluorescent protein with KIR2DS1 and a modified DAP12 adaptor protein...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28423700/hla-class-i-loss-in-metachronous-metastases-prevents-continuous-t-cell-recognition-of-mutated-neoantigens-in-a-human-melanoma-model
#16
Barbara Schrörs, Silke Lübcke, Volker Lennerz, Martina Fatho, Anne Bicker, Catherine Wölfel, Patrick Derigs, Thomas Hankeln, Dirk Schadendorf, Annette Paschen, Thomas Wölfel
T lymphocytes against tumor-specific mutated neoantigens can induce tumor regression. Also, the size of the immunogenic cancer mutanome is supposed to correlate with the clinical efficacy of checkpoint inhibition. Herein, we studied the susceptibility of tumor cell lines from lymph node metastases occurring in a melanoma patient over several years towards blood-derived, neoantigen-specific CD8+ T cells. In contrast to a cell line established during early stage III disease, all cell lines generated at later time points from stage IV metastases exhibited partial or complete loss of HLA class I expression...
March 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423362/trop2-promotes-proliferation-migration-and-metastasis-of-gallbladder-cancer-cells-by-regulating-pi3k-akt-pathway-and-inducing-emt
#17
Xinxing Li, Shifeng Teng, Yanyan Zhang, Weigang Zhang, Xianwen Zhang, Kai Xu, Houshan Yao, Jun Yao, Haolu Wang, Xiaowen Liang, Zhiqian Hu
The human trophoblast cell surface antigen 2 (TROP2) is overexpressed in many cancers. However, its effect on proliferation, migration and metastasis of gallbladder cancer remains unclear. In this study, we found that TROP2 was highly expressed in gallbladder cancer. Overexpression of TROP2 was associated with poor prognosis. Knockdown of TROP2 in gallbladder cancer cell lines strongly inhibited the cell proliferation, clone formation, invasion and migration in vitro, while TROP2 overexpression had opposite effects...
April 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28422737/generation-of-lung-cancer-cell-lines-harboring-egfr-t790m-mutation-by-crispr-cas9-mediated-genome-editing
#18
Mi-Young Park, Min Hee Jung, Eun Young Eo, Seokjoong Kim, Sang Hoon Lee, Yeon Joo Lee, Jong Sun Park, Young Jae Cho, Jin Haeng Chung, Cheol Hyeon Kim, Ho Il Yoon, Jae Ho Lee, Choon-Taek Lee
Tyrosine kinase inhibitors (TKIs) such as gefitinib and erlotinib are effective against lung adenocarcinomas harboring epidermal growth factor receptor (EGFR) mutations. However, cancer cells can develop resistance to these agents with prolonged exposure; in over 50% of cases, this is attributable to the EGFR T790M mutation. Moreover, additional resistance mutations can arise with the use of new drugs. Cancer cell lines with specific mutations can enable the study of resistance mechanisms. In this study, we introduced the EGFR T790M mutation into the PC9 human lung cancer cell line-which has a deletion in exon 19 of the EGFR gene-by clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated (Cas)9-mediated genome editing...
March 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28421046/horses-in-denmark-are-a-reservoir-of-diverse-clones-of-methicillin-resistant-and-susceptible-staphylococcus-aureus
#19
Md Zohorul Islam, Carmen Espinosa-Gongora, Peter Damborg, Raphael N Sieber, Rikke Munk, Louise Husted, Arshnee Moodley, Robert Skov, Jesper Larsen, Luca Guardabassi
Denmark is a country with high prevalence of livestock-associated methicillin-resistant Staphylococcus aureus (MRSA) clonal complex (CC) 398 in pigs. Even though pig farming is regarded as the main source of human infection or colonization with MRSA CC398, 10-15% of the human cases appear not to be linked to pigs. Following the recent reports of MRSA CC398 in horses in other European countries and the lack of knowledge on S. aureus carriage in this animal species, we carried out a study to investigate whether horses constitute a reservoir of MRSA CC398 in Denmark, and to gain knowledge on the frequency and genetic diversity of S...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28420610/the-diversity-of-dna-fragment-editing-by-crispr-cas9-in-highly-homologous-or-repetitive-sequences
#20
Wang Leyang, Huang Haiyan, Wu Qiang
In complex genomes, there are a large number of duplicated genes in the coding regions and many more repetitive sequences in the non-coding regions. Repetitive sequences can exert great impacts on the heredity and evolution of the organisms, as well as their genome 3D architecture and transcriptional regulation. The high homology nature of repetitive sequences renders their editing by CRISPR/Cas9 very complex. At diploid or polyploid situations, such repetitive sequences could be edited differently on each chromosome or chromatid...
April 20, 2017: Yi Chuan, Hereditas
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