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https://www.readbyqxmd.com/read/28738532/genipin-attenuates-cisplatin-induced-nephrotoxicity-by-counteracting-oxidative-stress-inflammation-and-apoptosis
#1
Eglal Mahgoub, Shanmugam Muthu Kumaraswamy, Kamal Hassan Kader, Balaji Venkataraman, Shreesh Ojha, Ernest Adeghate, Mohanraj Rajesh
Cisplatin (CP) is a potent and widely used chemotherapeutic agent. However, the clinical benefits of CP are compromised because it elicits nephrotoxicity and ototoxicity. In this study, we investigated the nephroprotective effects of the phytochemical genipin (GP) isolated from the gardenia (Gardenia jasminoides) fruit, using a murine model of CP-induced nephropathy. GP pretreatment attenuated the CP-induced renal tissue injury by diminishing the serum blood urea nitrogen, creatinine, and cystatin C levels, as well as those of kidney injury molecule-1...
July 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738472/-effect-of-interleukin-6-and-interleukin-12-on-immune-response-to-hepatitis-b-vaccination-in-infants-of-hbsag-positive-mothers
#2
X F Wang, X H Shi, X X Xu, Z Q Yang, H Y Hao, F Zhang, B Wang, H X Wen, Z D Fu, T Wang, S Y Feng, B Wang, S P Wang
Objective: To explore the effect of interleukin-6 (IL-6) and Interleukin-12 (IL-12) on immune response to hepatitis B vaccination in infants of HBsAg-positive mothers. Methods: A total of 91 neonates whose mothers were HBsAg-positive were included and followed up for 12 months. HBV DNA and HBV serological markers in the peripheral blood of the neonates and infants were detected with fluorescence quantitative polymerase chain reaction (FQ-PCR) and chemiluminescence immunoassay (CLIA), and the levels of IL-6 and IL-12 in the peripheral blood of the neonates and infants were detected with enzyme-linked immunosorbent assay (ELISA)...
July 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28738465/-influencing-factors-for-non-low-response-to-hepatitis-b-vaccine-in-infants-of-hbsag-positive-mothers
#3
B Wang, X X Xu, H X Wen, H Y Hao, Z Q Yang, X H Shi, Z D Fu, X F Wang, F Zhang, B Wang, S P Wang
Objective: To investigate the influencing factors for non/low-response to hepatitis B vaccine in infants of HBsAg-positive mothers. Methods: A total of 286 HBsAg-positive pregnant women and their infants were recruited from the Third People's Hospital of Taiyuan during July 2011 to January 2013. The infants were immunized with hepatitis B vaccine according to the 0-1-6 month vaccination schedule and followed up for 12 months. The serum HBV DNA level of mothers, neonates and infants were detected by electro chemilum inescence immunoassay kits and fluorescene quantiative polymerase chain rection...
July 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28737709/regulation-and-modulation-of-human-dna-polymerase-%C3%AE-activity-and-function
#4
REVIEW
Marietta Y W T Lee, Xiaoxiao Wang, Sufang Zhang, Zhongtao Zhang, Ernest Y C Lee
This review focuses on the regulation and modulation of human DNA polymerase δ (Pol δ). The emphasis is on the mechanisms that regulate the activity and properties of Pol δ in DNA repair and replication. The areas covered are the degradation of the p12 subunit of Pol δ, which converts it from a heterotetramer (Pol δ4) to a heterotrimer (Pol δ3), in response to DNA damage and also during the cell cycle. The biochemical mechanisms that lead to degradation of p12 are reviewed, as well as the properties of Pol δ4 and Pol δ3 that provide insights into their functions in DNA replication and repair...
July 24, 2017: Genes
https://www.readbyqxmd.com/read/28737162/silk-fiber-reinforcement-modulates-in-vitro-chondrogenesis-in-3d-composite-scaffolds
#5
Yogendra Pratap Singh, Mimi Adhikary, Nandana Bhardwaj, Bibhas Kumar Bhunia, Biman B Mandal
The limited self-regenerative capacity of adult cartilage has steered the upsurge in tissue engineered replacements to combat the problem of osteoarthritis. In the present study, the potential of fiber-reinforced silk composites from mulberry (Bombyx mori) and non-mulberry (Antheraea assamensis) silk has been investigated for cartilage tissue engineering. The fabricated composites were physico-chemically characterized and analyzed for cellular viability, proliferation, extracellular matrix formation and immunocompatibility...
July 24, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28737135/a-flotation-sieving-method-to-detect-echinococcus-multilocularis-and-toxocara-spp-eggs-in-soil-by-real-time-pcr
#6
Gérald Umhang, Matthieu Bastien, Camille Renault, Marine Faisse, Christophe Caillot, Jean-Marc Boucher, Vanessa Hormaz, Marie-Lazarine Poulle, Franck Boué
Soil can be a source of human infection by many zoonotic helminth species including Echinococcus multilocularis and Toxocara spp. The prevention of alveolar echinococcosis could be greatly improved through the identification of at-risk areas. Yet very few data are available about the detection of E. multilocularis in soil, while more studies have been reported for Toxocara spp. Identification of soil contamination by E. multilocularis eggs requires the use of specific methods. This study describes the development of a method for the detection of E...
2017: Parasite: Journal de la Société Française de Parasitologie
https://www.readbyqxmd.com/read/28737040/potential-of-small-molecule-fungal-metabolites-in-antiviral-chemotherapy
#7
Biswajit G Roy
Various viral diseases, such as acquired immunodeficiency syndrome, influenza, and hepatitis, have emerged as leading causes of human death worldwide. Scientific endeavor since invention of DNA-dependent RNA polymerase of pox virus in 1967 resulted in better understanding of virus replication and development of various novel therapeutic strategies. Despite considerable advancement in every facet of drug discovery process, development of commercially viable, safe, and effective drugs for these viruses still remains a big challenge...
July 23, 2017: Antiviral Chemistry & Chemotherapy
https://www.readbyqxmd.com/read/28735666/detection-of-papillomavirus-dna-in-cutaneous-squamous-cell-carcinoma-and-multiple-papillomas-in-captive-reptiles
#8
C Eleni, A Corteggio, G Altamura, R Meoli, C Cocumelli, G Rossi, K G Friedrich, P Di Cerbo, G Borzacchiello
Papillomaviruses (PVs) are small, non-enveloped DNA viruses that cause mucocutaneous tumours including squamous cell carcinoma (SCC) in man. In animals, evidence supports a causal role for PVs in the development of cutaneous and oral SCC in some species. In reptiles, three cases of papilloma or fibropapilloma have been associated with PV infection, but no association has been reported to date with SCC. Two cases of cutaneous epithelial tumours, multiple papillomas in a spiny-tailed lizard (Uromastyx acanthinura) and SCC in a Dumeril's boa (Acrantophis dumerili), were investigated by polymerase chain reaction...
July 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28733530/presence-of-embryonic-dna-in-culture-medium
#9
Linlin Yang, Qiaoying Lv, Wei Chen, Jian Sun, Yu Wu, Yiying Wang, Xiong Chen, Xiaojun Chen, Zhenbo Zhang
Preimplantation genetic diagnosis (PGD) has successfully assisted couples with genetic diseases to conceive healthy babies during the past decades. However, biopsy of the blastomere has potential lesion to the embryos which commonly results in abortion. Thus, a noninvasive PGD is needed. In the past, the presence of genetic materials in maternal plasma or serum has triggered a great innovation of noninvasive prenatal diagnosis. Nevertheless, it is not clear whether embryonic DNA is also present in embryonic culture medium...
June 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28733411/dna-preparation-from-schizosaccharomyces-pombe
#10
Assen Roguev, Jiewei Xu, Nevan Krogan
This protocol includes two methods for genomic DNA preparation from Schizosaccharomyces pombe The first is a quick method for preparation of DNA suitable for polymerase chain reaction (PCR) genotyping. The second, longer method yields high-quality DNA that can be used for amplification of targeting cassettes.
July 21, 2017: Cold Spring Harbor Protocols
https://www.readbyqxmd.com/read/28732447/dna-polymerase-%C3%AE-active-site-favors-a-mutagenic-mispair-between-the-enol-form-of-deoxyguanosine-triphosphate-substrate-and-the-keto-form-of-thymidine-template-a-free-energy-perturbation-study
#11
Sergey N Maximoff, Shina C L Kamerlin, Jan Florian
Human DNA polymerase λ is an intermediate fidelity member of the X family, which plays a role in DNA repair. Recent X-ray diffraction structures of a ternary complex of a loop-deletion mutant of polymerase λ, a deoxyguanosine triphosphate analog and a gapped DNA show that guanine and thymine form a mutagenic mispair with an unexpected Watson-Crick-like geometry rather than a wobble geometry. Hence, there is an intriguing possibility that either thymine in the DNA or guanine in the deoxyguanosine triphosphate analog may spend a substantial fraction of time in a deprotonated or enol form (both are minor species in aqueous solution) in the active site of the polymerase λ mutant...
July 21, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28732438/investigation-of-killer-immunoglobulin-like-receptor-kir-and-hla-genotypes-to-predict-the-occurrence-of-acute-allograft-rejection-after-kidney-transplantation
#12
Davood Jafari, Mohsen Nafar, Mir Saeed Yekaninejad, Razieh Abdolvahabi, Mahboob Lesan Pezeshki, Efat Razaghi, Ali Akbar Amirzargar
After kidney transplantation, natural killer (NK) cells play a pivotal role in triggering the immune response to the allogeneic grafts primarily by their killer-cell immunoglobulin-like receptors (KIR). This process may be one mechanism that contributes to graft rejection. In this study, we have evaluated whether acute rejection after kidney transplantation was associated with predicted NK cell alloreactivity based on KIR gene and ligand along with KIR/HLA compound genotype analysis. After kidney transplantation, natural killer (NK) cells play a pivotal role in triggering the immune response to the allogeneic grafts primarily by their killer-cell immunoglobulin-like receptors (KIR)...
June 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/28732061/melatonin-pre-treatment-mitigates-shsy-5y-cells-against-oxaliplatin-induced-mitochondrial-stress-and-apoptotic-cell-death
#13
Mohammad Waseem, Upasana Sahu, Mohd Salman, Arnab Choudhury, Sudeshna Kar, Heena Tabassum, Suhel Parvez
Oxaliplatin (Oxa) treatment to SH-SY5Y human neuroblastoma cells has been shown by previous studies to induce oxidative stress, which in turn modulates intracellular signaling cascades resulting in cell death. While this phenomenon of Oxa-induced neurotoxicity is known, the underlying mechanisms involved in this cell death cascade must be clarified. Moreover, there is still little known regarding the roles of neuronal mitochondria and cytosolic compartments in mediating Oxa-induced neurotoxicity. With a better grasp of the mechanisms driving neurotoxicity in Oxa-treated SH-SY5Y cells, we can then identify certain pathways to target in protecting against neurotoxic cell damage...
2017: PloS One
https://www.readbyqxmd.com/read/28731845/rho-protein-roles-and-mechanisms
#14
Pallabi Mitra, Gairika Ghosh, Md Hafeezunnisa, Ranjan Sen
At the end of the multistep transcription process, the elongating RNA polymerase (RNAP) is dislodged from the DNA template either at specific DNA sequences, called the terminators, or by a nascent RNA-dependent helicase, Rho. In Escherichia coli, about half of the transcription events are terminated by the Rho protein. Rho utilizes its RNA-dependent ATPase activities to translocate along the mRNA and eventually dislodges the RNAP via an unknown mechanism. The transcription elongation factor NusG facilitates this termination process by directly interacting with Rho...
July 21, 2017: Annual Review of Microbiology
https://www.readbyqxmd.com/read/28731615/the-prevalence-of-ccr5-%C3%AE-32-mutation-in-a-cohort-of-saudi-stem-cell-donors
#15
M Alarifi, F Al-Amro, A Alalwan, A Al-Turki, H Fakhoury, N Atallah, M Al Muallimi, M Al-Balwi, M ALzahrani, A Alaskar, A Hajeer, D Jawdat
CCR5 is a chemokine receptor that also was found to be used by HIV as a co-receptor for entering target cells. A 32 bp deletion was described in certain people that rendered CCR5 non-functional. The mutant allele CCR5-Δ32 has been shown to prevent HIV infection. In addition, stem cell transplantation with the CCR5-Δ32 homozygous genotype can lead to clearance of HIV infection. In this study, our aim was to investigate the frequency of CCR5-Δ32 mutation in a cohort of stem cell donors from cord blood bank and stem cell donor registry...
July 21, 2017: HLA
https://www.readbyqxmd.com/read/28731097/dba-induced-caspase-3-dependent-apoptosis-occurs-through-mitochondrial-translocation-of-cyt-c-in-the-rat-hippocampus
#16
Wenbo Jiang, Yingying Chen, Bai Li, Shuying Gao
Dibromoacetic acid (DBA), a by-product of disinfection, develops in drinking water during chlorination or ozonation processes. Water intake is the main source of DBA exposure in humans, which is potentially neurotoxic. The present study investigated the neurotoxic effects of DBA by assessing the behavioral and biochemical characteristics of Sprague Dawley rats intragastrically treated with DBA at concentrations of 20, 50 and 125 mg kg(-1) body weight for 28 consecutive days. The results indicated that animal weight gain and food consumption were not significantly affected by DBA...
July 21, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28730520/a-betabaculovirus-dna-polymerase-cannot-substitute-for-the-dna-polymerase-of-the-alphabaculovirus-autographa-californica-nucleopolyhedrovirus
#17
Guoqing Chen, Yang Fang, Lijuan Wu, Qing Yan, Peter J Krell, Guozhong Feng
DNA polymerase (DNApol) is present in all baculoviruses and plays a crucial role in viral DNA replication. Previously we showed that the DNApol of the alphabaculovirus group II Spodoptera litura nucleopolyhedrovirus (SpltNPV) could partially substitute for the DNApol of a group I alphabaculovirus, Autographa californica multiple nucleopolyhedrovirus (AcMNPV). However, it is not known if a betabaculovirus DNApol could subsititute for the alphabaculovirus DNApol in AcMNPV. In this report, DNApol of the betabaculovirus Pieris rapae granulovirus (PiraGV) was inserted into a dnapol-null AcMNPV bacmid, creating Bac-AcΔpol:PrPol...
July 20, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28729695/the-epstein-barr-virus-brrf1-gene-is-dispensable-for-viral-replication-in-hek293-cells-and-transformation
#18
Masahiro Yoshida, Takahiro Watanabe, Yohei Narita, Yoshitaka Sato, Fumi Goshima, Hiroshi Kimura, Takayuki Murata
The Epstein-Barr virus (EBV) is a gamma-herpesvirus associated with several malignancies. It establishes a latent infection in B lymphocytes and is occasionally reactivated to enter the lytic cycle. Here we examined the role of the EBV gene BRRF1, which is expressed in the lytic state. We first confirmed, using a DNA polymerase inhibitor, that the BRRF1 gene is expressed with early kinetics. A BRRF1-deficient recombinant virus was constructed using a bacterial artificial chromosome system. No obvious differences were observed between the wild-type, BRRF1-deficient mutant and the revertant virus in HEK293 cells in terms of viral lytic protein expression, viral DNA synthesis, progeny production, pre-latent abortive lytic gene expression and transformation of primary B cells...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729688/improved-genome-recovery-and-integrated-cell-size-analyses-of-individual-uncultured-microbial-cells-and-viral-particles
#19
Ramunas Stepanauskas, Elizabeth A Fergusson, Joseph Brown, Nicole J Poulton, Ben Tupper, Jessica M Labonté, Eric D Becraft, Julia M Brown, Maria G Pachiadaki, Tadas Povilaitis, Brian P Thompson, Corianna J Mascena, Wendy K Bellows, Arvydas Lubys
Microbial single-cell genomics can be used to provide insights into the metabolic potential, interactions, and evolution of uncultured microorganisms. Here we present WGA-X, a method based on multiple displacement amplification of DNA that utilizes a thermostable mutant of the phi29 polymerase. WGA-X enhances genome recovery from individual microbial cells and viral particles while maintaining ease of use and scalability. The greatest improvements are observed when amplifying high G+C content templates, such as those belonging to the predominant bacteria in agricultural soils...
July 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28729548/multiplex-polymerase-chain-reaction-for-pathogen-detection-in-donor-recipient-corneal-transplant-tissue-and-donor-storage-solution
#20
Takehiro Hariya, Kazuichi Maruyama, Sunao Sugita, Masayo Takahashi, Shunji Yokokura, Kota Sato, Yasuhiro Tomaru, Norio Shimizu, Toru Nakazawa
Corneal transplantation is a safe, reliable method of restoring visual acuity in patients with corneal disorders. Although it has a very high success rate, rejection can still occur, especially if the site is infected. Therefore, seeking to find better ways to manage infection risk, this study investigated a new technique, based on multiplex polymerase chain reaction (mPCR), to identify pathogens, including viruses, bacteria, and fungi, in corneal transplantation recipient sites, donor corneas and the donor cornea storage solution...
July 20, 2017: Scientific Reports
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