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https://www.readbyqxmd.com/read/29332326/carcinogenic-potential-of-antitumor-therapies-is-the-risk-predictable
#1
Ivanka Nenova, Janet Grudeva-Popova
The growing number of successfully cured cancer patients has created a new field in oncogenesis. The life expectancy of such patients has increased, however this favorable event may create enough time for epigenetic events to occur which can cause a new carcinognic event, i.e. a secondary malignancy. The terms in use are second primary malignancies as well as therapy-related neoplasms in case the treatment of the first neoplasm is a direct cause. Second primary malignancies can be hematological neoplasms or solid tumors, with solid tumors having higher frequency...
November 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29331943/modern-management-of-perianal-fistulas-in-crohn-s-disease-future-directions
#2
REVIEW
Paulo Gustavo Kotze, Bo Shen, Amy Lightner, Takayuki Yamamoto, Antonino Spinelli, Subrata Ghosh, Remo Panaccione
Perianal fistulae in patients with Crohn's disease (CD) can be associated with significant morbidity resulting in negative impact on quality of life. The last two decades have seen significant advancements in the management of perianal fistulas in CD, which has evolved into a multidisciplinary approach that includes gastroenterologists, colorectal surgeons, endoscopists and radiologists. Despite the introduction of new medical therapies such as antitumour necrosis factor and novel models of care delivery, the best fistula healing rates reported with combined medical and surgical approaches are approximately 50%...
January 13, 2018: Gut
https://www.readbyqxmd.com/read/29331861/synthesis-of-colloidal-silver-nanoparticle-clusters-and-their-application-in-ascorbic-acid-detection-by-sers
#3
Jorge L Cholula-Díaz, Diana Lomelí-Marroquín, Bidhan Pramanick, Alfonso Nieto-Argüello, Luis A Cantú-Castillo, Hyundoo Hwang
Ascorbic acid (vitamin C) has an essential role in the human body mainly due to its antioxidant function. In this work, metallic silver nanoparticle (AgNP) colloids were used in SERS experiments to detect ascorbic acid in aqueous solution. The AgNPs were synthesized by a green method using potato starch as reducing and stabilizing agent, and water as the solvent. The optical properties of the yellowish as-synthesized silver colloids were characterized by UV-vis spectroscopy, in which besides a typical band at 410 nm related to the localized surface plasmon resonance of the silver nanoparticles, a shoulder band around 500 nm, due to silver nanoparticle cluster formation, is presented when relatively higher concentrations of starch are used in the synthesis...
December 29, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29331332/hiv-infection-and-its-effects-on-the-development-of-autoimmune-disorders
#4
REVIEW
Luis E Vega, Luis R Espinoza
More than 35 years have elapsed since the initial outbreak of the HIV/AIDS epidemic and the status of a considerable number of patients has changed from a fatal disorder to a chronic one where comorbidities including sarcoidosis and autoimmune diseases have become relevant and dominant. HIV targets the immune system leading to a state of immunodeficiency in a setting of immune activation in which CD4+ T cell depletion plays a critical role. The onset, natural history and course of HIV-associated autoimmune disease has dramatically changed according to the stage of HIV infection and since the introduction of combined anti-retroviral therapy...
January 10, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29331315/ethnobotany-phytochemistry-and-pharmacology-of-arctotis-arctotoides-l-f-o-hoffm-a-review
#5
REVIEW
Md Moshfekus Saleh-E-In, Johannes Van Staden
ETHNOPHARMACOLOGICAL RELEVANCE: Arctotis arctotoides (Asteraceae) is part of the genus Arctotis. Arctotis is an African genus of approximately 70 species that occur widely in the African continent with diverse medicinal values. This plant is used for the treatment of indigestion and catarrh of the stomach, epilepsy, topical wounds and skin disorders among the ethnic groups in South Africa and reported to have a wide spectrum of pharmacological properties. AIM OF THE REVIEW: The aim of the present review is to appraise the botany, traditional uses, phytochemistry, pharmacological potential, analytical methods and safety issues of A...
January 10, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29331289/titanium-scaffolding-an-innovative-modality-for-salvage-of-failed-first-ray-procedures
#6
Natalie Coriaty, Katherine Pettibone, Nicholas Todd, Shannon Rush, Ryan Carter, Colin Zdenek
Shortening of the first ray is a potential complication associated with first metatarsal procedures. Correction of this deformity conventionally has required the use of a tricortical bone graft to lengthen the bone. Graft complications, including donor site morbidity, poor graft stability, and graft resorption, have revealed a need for an alternative procedure. The present report shows that titanium cage scaffolding has lower extremity applications beyond its previous uses in the ankle and spine. Two patients underwent surgical correction for failed first ray procedures using a titanium cage apparatus with a calcaneal autograft and other biologic agents...
January 11, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29330771/inhibition-of-human%C3%A2-immunodeficiency-type-1-virus-hiv-1-life-cycle-by-different-egg-white-lysozymes
#7
Mandana Behbahani, Mokhtar Nosrati, Hassan Mohabatkar
Lysozyme is a relatively small enzyme with different biological activities, which is found in tears, saliva, egg white, and human milk. In the study, the anti-HIV-1 activity of lysozymes purified from quail, Meleagris, and hen egg white has been determined. For this end, a time-of-drug-addition assay was performed to identify the target of anti-HIV-1 agents and for determination of probable anti HIV-1 mechanism of the studied lysozyme, the binding affinity of the lysozymes to the human CD4 receptor was studied by molecular docking method...
January 13, 2018: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/29330691/bis-guanylhydrazones-as-efficient-anti-candida-compounds-through-dna-interaction
#8
Jelena Lazić, Vladimir Ajdačić, Sandra Vojnovic, Mario Zlatović, Marina Pekmezovic, Selene Mogavero, Igor Opsenica, Jasmina Nikodinovic-Runic
Candida spp. are leading causes of opportunistic mycoses, including life-threatening hospital-borne infections, and novel antifungals, preferably aiming targets that have not been used before, are constantly needed. Hydrazone- and guanidine-containing molecules have shown a wide range of biological activities, including recently described excellent antifungal properties. In this study, four bis-guanylhydrazone derivatives (BG1-4) were generated following a previously developed synthetic route. Anti-Candida (two C...
January 12, 2018: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29330358/pathogenesis-of-bone-disease-in-multiple-myeloma-from-bench-to-bedside
#9
REVIEW
Evangelos Terpos, Ioannis Ntanasis-Stathopoulos, Maria Gavriatopoulou, Meletios A Dimopoulos
Osteolytic bone disease is the hallmark of multiple myeloma, which deteriorates the quality of life of myeloma patients, and it affects dramatically their morbidity and mortality. The basis of the pathogenesis of myeloma-related bone disease is the uncoupling of the bone-remodeling process. The interaction between myeloma cells and the bone microenvironment ultimately leads to the activation of osteoclasts and suppression of osteoblasts, resulting in bone loss. Several intracellular and intercellular signaling cascades, including RANK/RANKL/OPG, Notch, Wnt, and numerous chemokines and interleukins are implicated in this complex process...
January 12, 2018: Blood Cancer Journal
https://www.readbyqxmd.com/read/29330126/recent-progress-in-the-discovery-of-myeloid-differentiation-2-md2-modulators-for-inflammatory-diseases
#10
REVIEW
Lingfeng Chen, Weitao Fu, Lulu Zheng, Yi Wang, Guang Liang
Myeloid differentiation protein 2 (MD2), together with Toll-like receptor 4 (TLR4), binds lipopolysaccharide (LPS) with high affinity, inducing the formation of the activated homodimer LPS-MD2-TLR4. MD2 directly recognizes the Lipid A domain of LPS, leading to the activation of downstream signaling of cytokine and chemokine production, and initiation of inflammatory and immune responses. However, excessive activation and potent host responses generate severe inflammatory syndromes such as acute sepsis and septic shock...
January 9, 2018: Drug Discovery Today
https://www.readbyqxmd.com/read/29330061/forsythoside-a-inhibited-s-aureus-stimulated-inflammatory-response-in-primary-bovine-mammary-epithelial-cells
#11
Jiali Zhang, Yue Zhang, Hailong Huang, Haiwei Zhang, Wei Lu, Guoqun Fu, Yunzhang Zhu
Forsythoside A (FTA), the major bioactive component extracted from Forsythiae fructus, has multiple biological properties especially anti-inflammatory property. Staphylococcus aureus (S. aureus), a Gram-positive organism, is one of most common pathogens that cause bovine mastitis. This study evaluated the anti-inflammatory effect of FTA in S. aureus-stimulated primary bovine mammary epithelial cells (bMEC). Primary bovine mammary epithelial cells were isolated from the mammary tissue of lactating cows and identified as bMEC...
January 9, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29329541/a-role-for-endothelial-nitric-oxide-synthase-in-intestinal-stem-cell-proliferation-and-mesenchymal-colorectal-cancer
#12
Jon Peñarando, Laura M López-Sánchez, Rafael Mena, Silvia Guil-Luna, Francisco Conde, Vanessa Hernández, Marta Toledano, Victoria Gudiño, Michela Raponi, Caroline Billard, Carlos Villar, César Díaz, José Gómez-Barbadillo, Juan De la Haba-Rodríguez, Kevin Myant, Enrique Aranda, Antonio Rodríguez-Ariza
BACKGROUND: Nitric oxide (NO) has been highlighted as an important agent in cancer-related events. Although the inducible nitric oxide synthase (iNOS) isoform has received most attention, recent studies in the literature indicate that the endothelial isoenzyme (eNOS) can also modulate different tumor processes including resistance, angiogenesis, invasion, and metastasis. However, the role of eNOS in cancer stem cell (CSC) biology and mesenchymal tumors is unknown. RESULTS: Here, we show that eNOS was significantly upregulated in VilCre ERT2 Apc fl/+ and VilCre ERT2 Apc fl/fl mouse intestinal tissue, with intense immunostaining in hyperproliferative crypts...
January 10, 2018: BMC Biology
https://www.readbyqxmd.com/read/29329257/synthesis-and-pharmacological-activities-of-pyrazole-derivatives-a-review
#13
REVIEW
Khalid Karrouchi, Smaail Radi, Youssef Ramli, Jamal Taoufik, Yahia N Mabkhot, Faiz A Al-Aizari, M'hammed Ansar
Pyrazole and its derivatives are considered a pharmacologically important active scaffold that possesses almost all types of pharmacological activities. The presence of this nucleus in pharmacological agents of diverse therapeutic categories such as celecoxib, a potent anti-inflammatory, the antipsychotic CDPPB, the anti-obesity drug rimonabant, difenamizole, an analgesic, betazole, a H2-receptor agonist and the antidepressant agent fezolamide have proved the pharmacological potential of the pyrazole moiety...
January 12, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29329229/chemical-composition-and-evaluation-of-the-biological-properties-of-the-essential-oil-of-the-dietary-phytochemical-lippia-citriodora
#14
Eleni Fitsiou, Gregoria Mitropoulou, Katerina Spyridopoulou, Manolis Vamvakias, Haido Bardouki, Alex Galanis, Katerina Chlichlia, Yiannis Kourkoutas, Mihalis Ι Panayiotidis, Aglaia Pappa
The aim of the study was to characterize the chemical composition and biological properties of the essential oil from the plant Lippia citriodora grown in Greece. The essential oil volatiles were analyzed by gas chromatography-mass spectrometry GC-MS indicating citral as the major component. Τhe antimicrobial properties were assayed using the disk diffusion method and the minimum inhibitory and non-inhibitory concentration values were determined. Listeria monocytogenes, Staphylococcus epidermidis, Staphylococcus aureus, Saccharomyces cerevisiae, and Aspergillus niger were sensitive to Lippia citriodora oil, but not Escherichia coli, Salmonella Enteritidis, Salmonella typhimurium, and Pseudomonas fragi...
January 12, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29329096/water-contamination-by-endocrine-disruptors-impacts-microbiological-aspects-and-trends-for-environmental-protection
#15
REVIEW
Caren Leite Spindola Vilela, João Paulo Bassin, Raquel Silva Peixoto
Hormone active agents constitute a dangerous class of pollutants. Among them, those agents that mimic the action of estrogens on target cells and are part of the group of endocrine-disruptor compounds (EDCs) are termed estrogenic EDCs, the main focus of this review. Exposure to these compounds causes a number of negative effects, including breast cancer, infertility and animal hermaphroditism. However, especially in underdeveloped countries, limited efforts have been made to warn people about this serious issue, explain the methods of minimizing exposure, and develop feasible and efficient mitigation strategies at different levels and in various environments...
January 9, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29329000/synthesis-of-c3-neoglycosides-of-digoxigenin-and-their-anticancer-activities
#16
Xiao-San Li, Yi-Chang Ren, Yu-Zhou Bao, Jie Liu, Xiao-Kun Zhang, You-Wei Zhang, Xue-Long Sun, Xin-Sheng Yao, Jin-Shan Tang
Cardiac glycosides exhibit significant anticancer effects and the glycosyl substitution at C3 position of digoxigenin is pivotal for their biological activity. In order to study the structure-activity relationship (SAR) of cardiac glycosides toward cancers and explore more potent anticancer agents, a series of C3-O-neoglycosides and C3-MeON-neoglycosides of digoxigenin were synthesized by the Koenigs-Knorr and neoglycosylation method, respectively. In addition, digoxigenin bisdigitoxoside and monodigitoxoside were prepared from digoxin by sodium periodate (NaIO4) oxidation and 6-aminocaproic acid hydrolysis...
January 2, 2018: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29328997/synthesis-biological-evaluation-and-molecular-modeling-of-novel-thienopyrimidinone-and-triazolothienopyrimidinone-derivatives-as-dual-anti-inflammatory-antimicrobial-agents
#17
Adnan A Bekhit, Ahmed M Farghaly, Ragab M Shafik, Mona M A Elsemary, Alaa El-Din A Bekhit, Aida A Guemei, Mai S El-Shoukrofy, Tamer M Ibrahim
New thienopyrimidinone and triazolothienopyrimidinone derivatives have been synthesized. These compounds were subjected to anti-inflammatory and antimicrobial activity screening aiming to identify new candidates that have dual anti-inflammatory and antimicrobial activities. Compounds 5, 7 and 10a showed minimal ulcerogenic effect and high selectivity towards human recombinant COX-2 over COX-1 enzyme. Their docking outcome correlated with their biological activity and assured the high selectivity binding towards COX-2...
January 4, 2018: Bioorganic Chemistry
https://www.readbyqxmd.com/read/29328946/kaempferol-alleviates-lps-induced-neuroinflammation-and-bbb-dysfunction-in-mice-via-inhibiting-hmgb1-release-and-down-regulating-tlr4-myd88-pathway
#18
Xiao Cheng, Ying-Lin Yang, Huan Yang, Yue-Hua Wang, Guan-Hua Du
Kaempferol is a natural flavonoid with many biological activities including anti-oxidation and anti-inflammation. Nevertheless, its anti-neuroinflammation role and the relevant mechanism remain unclear. The present study was to investigate effects of kaempferol against LPS-induced neuroinflammation and blood-brain barrier dysfunction as well as the mechanism in mice. BALB/c mice were treated with LPS 5mg/kg to induce inflammation after pre-treatment with kaempferol 25, 50, or 100mg/kg for 7days. The results showed that kaempferol reduced the production of various pro-inflammatory factors and inflammatory proteins including IL-1β, IL-6, TNF-α, MCP-1, COX-2 and iNOS in brain tissues...
January 9, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29327938/glaucocalyxin-a-attenuates-the-activation-of-hepatic-stellate-cells-through-the-tgf-%C3%AE-1-smad-signaling-pathway
#19
Zhichao Dong, Qi Gao, Hao Guo
Glaucocalyxin A (GLA) is a biologically active ent-kauranoid diterpenoid isolated from Rabdosia japonica var. glaucocalyx. A large number of studies have shown that GLA possesses important pharmacological activities, such as anti-inflammatory, antitumor, antifibrosis, and antiplatelet activities. However, the role of GLA in the pathogenesis of liver fibrosis remains undefined. Therefore, the aim of this study was to investigate the effects of GLA on hepatic stellate cells (HSCs) activation/proliferation and migration in vitro and its possible mechanism in liver fibrosis...
January 12, 2018: DNA and Cell Biology
https://www.readbyqxmd.com/read/29327816/brain-cortex-microglia-derived-exosomes-novel-nanoparticles-for-glioma-therapy
#20
Adriana-Natalia Murgoci, Dasa Cizkova, Petra Majerova, Eva Petrovova, Lubomir Medvecky, Isabelle Fournier, Michel Salzet
The function and integrity of nervous system require interactive exchanges among neurons and glial cells. Exosomes and other extracellular vesicles (EVs) are emerging as a key mediator of intercellular communication, capable to transfer nucleic acids, proteins and lipids, influencing numerous functional and pathological aspects of both donor and recipient cells. The immune response mediated by microglia derived exosomes are most prominently involved in the spread of neuroinflammation, neurodegenerative disorders and brain cancer...
January 12, 2018: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
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