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https://www.readbyqxmd.com/read/29458133/artesunate-derived-monomeric-dimeric-and-trimeric-experimental-drugs-their-unique-mechanistic-basis-and-pronounced-antiherpesviral-activity
#1
Friedrich Hahn, Tony Fröhlich, Theresa Frank, Luca D Bertzbach, Stephan Kohrt, Benedikt B Kaufer, Thomas Stamminger, Svetlana B Tsogoeva, Manfred Marschall
Human cytomegalovirus (HCMV) is a major human pathogen and is associated with severe pathology, such as life-threatening courses of infection in immunocompromised individuals and neonates. Currently, antiviral therapy is still hampered by a considerable toxicity of the available drugs and induction of viral resistance. Recently, we and others reported the very potent antiviral activity of the broad antiinfective drug artesunate in vitro and in vivo. Here, we investigated further optimized analogs including monomeric, dimeric and trimeric derivatives belonging to this highly interesting chemical group of experimental drugs (sesquiterpenes/trioxanes) and compared these to the previously identified trimeric artesunate compound TF27...
February 16, 2018: Antiviral Research
https://www.readbyqxmd.com/read/29458130/impact-of-rna-polymerase-i-inhibitor-cx-5461-on-viral-kinase-dependent-and-independent-cytomegalovirus-replication
#2
Kristen N Westdorp, Scott S Terhune
Human cytomegalovirus (HCMV) infections cause congenital birth defects and disease in immunosuppressed individuals. Antiviral compounds can control infection yet their use is restricted due to concerns of toxicity and the emergence of drug resistant strains. We have evaluated the impact of an RNA Polymerase I (Pol I) inhibitor, CX-5461 on HCMV replication. CX-5461 inhibits Pol I-mediated ribosomal DNA transcription by binding G-quadruplex DNA structures and also activates cellular stress response pathways. The addition of CX-5461 at both early and late stages of the HCMV infection inhibited viral DNA synthesis and virus production...
February 16, 2018: Antiviral Research
https://www.readbyqxmd.com/read/29458009/the-lim-only-protein-fhl2-supports-influenza-a-virus-induced-lung-inflammation-by-restricting-the-host-adaptive-immune-response
#3
Dörthe Masemann, Rafael Leite Dantas, Siarhei Sitnik, Tanja Schied, Carolin Nordhoff, Stephan Ludwig, Viktor Wixler
FHL2 is a multifunctional adaptor protein with fine-tuning adjustment properties. It acts as a regulator of signaling cascades but also as a cofactor of transcription and controls several anti-inflammatory immune responses. Recently, we described FHL2 as a novel regulator of influenza A virus propagation. We have shown that in vitro FHL2 restricts viral replication by accelerating the IRF-3-dependent transcription of the Ifnb1 gene. In this work, we unraveled an ambiguous role of FHL2 during influenza A virus infection in vivo...
February 16, 2018: American Journal of Pathology
https://www.readbyqxmd.com/read/29457839/brincidofovir-as-salvage-therapy-for-adenovirus-disease-in-intestinal-transplant-recipients
#4
Nimisha Sulejmani, Shunji Nagai, Mohamed Safwan, Michael D Rizzari, Mohammad Raoufi, Marwan S Abouljoud, Mayur Ramesh
Adenoviruses are double-stranded DNA viruses that typically cause mild self-limiting respiratory, ocular, and gastrointestinal infections. In immunocompromised patients, especially transplant recipients, the infection can be severe, with dissemination and multiorgan failure. In intestinal transplant recipients, the incidence is as high as 57%. To our knowledge, no standardized guidelines or United States Food and Drug Administration-approved medications exist for the treatment of adenovirus disease. We describe two isolated intestinal transplant recipients who developed adenovirus disease (viremia with viral enteritis) that was managed with a new experimental drug, brincidofovir (an oral lipid conjugate prodrug of cidofovir), as salvage therapy...
February 19, 2018: Pharmacotherapy
https://www.readbyqxmd.com/read/29457734/role-of-nutrient-limitation-in-the-competition-between-uropathogenic-strains-of-klebsiella-pneumoniae-and-escherichia-coli-in-mixed-biofilms
#5
Guillermo E Juarez, Estela M Galván
Klebsiella pneumoniae and Escherichia coli form mixed species biofilms in catheter-associated urinary tract infections. Recently, a detrimental effect of K. pneumoniae over E. coli was observed in mixed species biofilms grown in an artificial urine medium. The mechanism behind this competitive interaction was studied. K. pneumoniae partially outcompeted E. coli in early-stage batch-fed biofilms, whereas both microorganisms co-exist at longer times (K. pneumoniae:E. coli ratio, 55:1), as shown by cell counts and confocal microscopy...
February 19, 2018: Biofouling
https://www.readbyqxmd.com/read/29457639/hepatitis-e-virus-infection-in-hiv-infected-patients-a-large-cohort-study-in-yunnan-province-china
#6
Shiyi Zhou, Li Ren, Xueshan Xia, Zhijiang Miao, Fen Huang, Yunlong Li, Mei Zhu, Zhenrong Xie, Yu Xu, Yuan Qian, Qiuwei Pan, Kunhua Wang
BACKGROUND & AIMS: Hepatitis E virus (HEV) infection in immunocompromised patients often results in distinct outcome, compared to the infection in general population. This study aimed to investigate the prevalence, potential risk factors and clinical features of HEV infection among HIV patients treated with antiretroviral therapy (ART) in Yunnan province, China. METHODS: A total of 770 HIV-infected patients between May 2015 and February 2016 were enrolled in Yunnan, China...
February 19, 2018: Journal of Medical Virology
https://www.readbyqxmd.com/read/29457413/-clinical-observation-of-proximal-femoral-anti-rotation-nail-for-the-treatment-of-femoral-intertrochanteric-fracture
#7
Fang-Gui Sun, De-Xin Wang, Yu-Tong Hu, Rong-Ming Xu
OBJECTIVE: To explore the curative effect and the recessive loss of blooding of PFNA for the treatment of intertrochanteric fractures of femur. METHODS: From January 2012 to January 2015, a total of 49 patients with intertrochanteric fractures of femur were treated with proximal femoral anti-rotation nail including 41 males and 8 females with an average age of 79 years old ranging from 65 to 91 years old. According to the modified Evans type, 1 case was type I, 12 cases were type II, 36 cases were type III...
October 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457402/-clinical-study-on-negative-pressure-closed-drainage-combined-with-vancomycin-loaded-calcium-sulfate-and-autogenous-bone-in-the-treatment-of-chronic-osteomyelitis
#8
Qiang Li, Shi-Feng Song, Wei Zhang, Guo-Zhi Wu, Li-Zhu Liu
OBJECTIVE: To study the clinical effects of negative pressure closed drainage combined with vancomycin loaded calcium sulfate and autogenous bone in the treatment of chronic osteomyelitis. METHODS: From June 2013 to December 2016, there were 35 cases of chronic osteomyelitis patients in our department, including 23 males and 12 females, ranging in age from 11 to 65 years old, with an average of 34 years old. The course of disease ranged from 8 to 46 months, with an average of 26 months...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457388/-case-control-study-of-therapeutic-effects-between-extreme-lateral-interbody-fusion-and-conventional-posterior-operation-for-the-treatment-of-upper-lumbar-disc-herniation
#9
Can-Hua Xu, Zeng-Hui Wu, Rong-Chun Chen, Hong-Fa Zhong, Qing-Shun Zhang, Ning Liu, Bi Zhang
OBJECTIVE: To evaluate the clinical outcomes between extreme lateral interbody fusion and conventional posterior operation in the treatment of upper lumbar disc herniation. METHODS: Among 60 patients with upper lumbar disc herniation were treated with extreme lateral interbody fusion(XLIF) or conventional posterior operation from June 2010 to December 2014, 30 patients(19 males and 11 females) were treated with XLIF (XLIF group); and the other 30 patients(17 males and 13 females) were treated with conventional posterior operation (conventional group)...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29456946/detection-of-epstein-barr-and-human-papilloma-viruses-in-the-middle-ear-squamous-cell-carcinoma
#10
Agus Surono, Bambang Hariwiyanto, Edhie Samodra
The uncommon ear tumor of middle ear squamous cell carcinoma (MESCC) is thought to be associated with the history of long-term chronic otitis media in the most cases. The main etiologic factor of MESCC is still unclear and may be multifactorial. Infections of Epstein-Barr virus (EBV) and Human Papillomavirus (HPV) are considered as one of the etiologic factor of MESCC. Previous studies have shown that the EBV and HPV have been detected in MESCC. Although the EBV and HPV have been implicated in human malignancies, their roles in pathogenesis of MESCC have not been elucidated...
March 2018: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/29456826/seroprevalence-of-ebola-virus-infection-in-bombali-district-sierra-leone
#11
Nadege Goumkwa Mafopa, Gianluca Russo, Raoul Emeric Guetiya Wadoum, Emmanuel Iwerima, Vincent Batwala, Marta Giovanetti, Antonella Minutolo, Patrick Turay, Thomas B Turay, Brima Kargbo, Massimo Amicosante, Maurizio Mattei, Carla Montesano
A serosurvey of anti-Ebola Zaire virus nucleoprotein IgG prevalence was carried out among Ebola virus disease survivors and their Community Contacts in Bombali District, Sierra Leone. Our data suggest that the specie of Ebola virus ( Zaire ) responsible of the 2013-2016 epidemic in West Africa may cause mild or asymptomatic infection in a proportion of cases, possibly due to an efficient immune response.
December 31, 2017: Journal of Public Health in Africa
https://www.readbyqxmd.com/read/29456820/immunogenicity-of-heparin-binding-hemagglutinin-expressed-by-pichia-pastoris-gs115-strain
#12
Xindong Teng, Xiaoguang Chen, Ke Zhu, Hefei Xu
Objectives: Heparin-binding hemagglutinin (HBHA), a mycobacterial cell surface protein, mediates adhesion to nonphagocytic cells and the dissemination of Mycobacterium tuberculosis ( M. tuberculosis ) from the site of primary infection. Superior expression systems are required to obtain abundant M. tuberculosis proteins for the purpose of diagnosing M. tuberculosis infection or for the immunization. Here, HBHA was expressed by Pichia pastoris ( P. pastoris ) GS115 strain , and the immunogenicity of HBHA was evaluated...
February 2018: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29456644/eudesmin-attenuates-helicobacter-pylori-induced-epithelial-autophagy-and-apoptosis-and-leads-to-eradication-of-h-pylori-infection
#13
Jai-Sing Yang, Chao-Min Wang, Chiu-Hsian Su, Han-Chen Ho, Chiung-Hung Chang, Chang-Hung Chou, Yuan-Man Hsu
Eudesmin has been proven to possess anti-inflammatory effects. In the present study, the effects of eudesmin on Helicobacter pylori (H. pylori) -mediated autophagy, apoptosis, immune response and inflammation were determined in human gastric adenocarcinoma (AGS) cells in vitro and in C57BL/6 mice in vivo . Detection of the production of interleukin (IL)-8, IL-1β and immunoglobulin M (IgM) was performed using ELISA. Identification of the activation of apoptosis-associated caspase-3, -8 and -9 proteins, Bcl-2-associated X protein (Bax) and BH3 interacting domain death agonist (Bid) protein, was determined through western blot analysis...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29456414/high-prevalence-of-hepatitis-b-antibody-loss-and-a-case-report-of-de-novo-hepatitis-b-virus-infection-in-a-child-after-living-donor-liver-transplantation
#14
Palittiya Sintusek, Nawarat Posuwan, Piyaporn Wanawongsawad, Suttiruk Jitraruch, Yong Poovorawan, Voranush Chongsrisawat
AIM: To assess the seroprevalence of hepatitis B virus (HBV) immunity among previously vaccinated pediatric liver transplant recipients and present a case report of de novo hepatitis B infection after liver transplantation. METHODS: This study focused on children with chronic liver diseases who received primary hepatitis B immunization and had a complete dataset of anti-HBs before and after liver transplantation between May 2001 and June 2017. Medical records were retrospectively reviewed for potential factors relating to HBV immunity loss...
February 14, 2018: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29456109/synthetic-strigolactone-analogues-reveal-anti-cancer-activities-on-hepatocellular-carcinoma-cells
#15
Mohammed Nihal Hasan, Hani Choudhry, Syed Shoeb Razvi, Said Salama Moselhy, Taha Abduallah Kumosani, Mazin A Zamzami, Ziad Omran, Majed A Halwani, Salim Al-Babili, Khalid Omer Abualnaja, Abdulrahman Labeed Al-Malki, Mahmoud Alhosin, Tadao Asami
Hepatocellular carcinoma (HCC) remains one of the leading causes of death worldwide. The complex etiology is attributed to many factors like heredity, cirrhosis, hepatitis infections or the dysregulation of the different molecular pathways. Nevertheless, the current treatment regimens have either severe side effects or tumors gradually acquire resistance upon prolonged use. Thus, developing a new selective treatment for HCC is the need of the hour. Many anticancer agents derived from plants have been evaluated for their cytotoxicity towards many human cancer cell lines...
February 9, 2018: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29455535/antioxidative-nanoparticles-significantly-enhance-therapeutic-efficacy-of-an-antibacterial-therapy-against-listeria-monocytogenes-infection
#16
Yutaka Ikeda, Kazuhiro Shoji, Chitho P Feliciano, Shinji Saito, Yukio Nagasaki
Acute inflammatory conditions such as sepsis lead to fatal conditions, including multiple organ failure. However, currently no definite treatments are available against these conditions. Therefore, several treatments, such as steroidal anti-inflammatory drugs, protease inhibitors, anti-human TNF-α monoclonal antibodies, and continuous hemodiafiltration (CHDF), are currently being investigated in order to decrease the blood cytokine level, which increases remarkably. However, these treatments are not always reliable and effective, and none have drastically improved survival rates...
February 18, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29455492/-relationship-between-inflammatory-cytokines-of-il-1%C3%AE-and-tnf-%C3%AE-and-intervertebral-disc-degeneration
#17
REVIEW
He Zhao, Xing Yu, Xian-Sheng Tang, Feng He, Yong-Dong Yang, Yang Xiong, Zhen-Guo Hu, Lin Xu
The inflammatory cytokines of IL-1β and TNF-α participate in the process of intervertebral disc degeneration is focused by the spine surgeons. Inflammatory cytokines represented by IL-1β and TNF-α act as the key factors in the process of intervertebral disc degeneration resulting in low back pain and radicular symptoms. Annulus fibrosus and nucleus pulposus can secrete TNF-α and IL-1β under the stimulation of mechanical injury, overstressed, genetic susceptibility and infection. The mechanism of inflammatory cytokines in intervertebral disc degeneration needs further investigation...
September 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29454913/restoring-th17-treg-balance-via-modulation-of-stat3-and-stat5-activation-contributes-to-the-amelioration-of-chronic-obstructive-pulmonary-disease-by-bufei-yishen-formula
#18
Peng Zhao, Jiansheng Li, Yange Tian, Jing Mao, Xuefang Liu, Suxiang Feng, Junzi Li, Qingqing Bian, Huige Ji, Lanxi Zhang
ETHNOPHARMACOLOGY RELEVANCE: Bufei Yishen formula (BYF), a Traditional Chinese Medicine (TCM), has been extensively applied in clinical treatment of chronic obstructive pulmonary disease (COPD) and provides an effective treatment strategy for the syndrome of lung-kidney qi deficiency in COPD patients. Here, we investigated its anti-COPD mechanism in COPD rats in relation to the balance between T helper (Th) 17 cells and regulatory T (Treg) cells. METHODS: Rat model of cigarette smoke- and bacterial infection-induced COPD was established, and orally treated with BYF for 12 consecutive weeks...
February 15, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29454849/escmid-study-group-for-infections-in-compromised-hosts-esgich-consensus-document-on-the-safety-of-targeted-and-biological-therapies-an-infectious-diseases-perspective-intracellular-signaling-pathways-tyrosine-kinase-and-mtor-inhibitors
#19
REVIEW
Mark Reinwald, Jose T Silva, Nicolas J Mueller, Jesús Fortún, Christian Garzoni, Johan W de Fijter, Mario Fernández-Ruiz, Paolo Grossi, Jose María Aguado
BACKGROUND: The present review is part of the ESCMID Study Group for Infections in Compromised Hosts (ESGICH) Consensus Document on the safety of targeted and biological therapies. AIMS: To review, from an Infectious Diseases perspective, the safety profile of therapies targeting different intracellular signaling pathways and to suggest preventive recommendations. SOURCES: Computer-based MEDLINE searches with MeSH terms pertaining to each agent or therapeutic family...
February 15, 2018: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29454797/alterations-in-intestinal-microbiota-lead-to-production-of-interleukin-17-by-intrahepatic-%C3%AE-%C3%AE-t-cell-receptor-positive-cells-and-pathogenesis-of-cholestatic-liver-disease
#20
Dana Tedesco, Manoj Thapa, Chui-Yoke Chin, Yong Ge, Minghao Gong, Jing Li, Sanjeev Gumber, Patrick Speck, Elizabeth J Elrod, Eileen M Burd, William H Kitchens, Joseph F Magliocca, Andrew B Adams, David S Weiss, Mansour Mohamadzadeh, Arash Grakoui
BACKGROUND & AIMS: Variants at the ATP binding cassette subfamily B member 4 gene (ABCB4 or MDR2) locus, which encodes a biliary transport protein, are associated with a spectrum of cholestatic liver diseases. Exacerbation of liver disease has been linked to increased hepatic levels of interleukin 17 (IL17), yet the mechanisms of this increase are not understood. We studied mice with disruption of Mdr2 to determine how defects in liver and alteration in the microbiota contribute to production of IL17 by intrahepatic γδ T cells...
February 15, 2018: Gastroenterology
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