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https://www.readbyqxmd.com/read/29236324/silencing-of-phospholipase-c-gamma-2-promotes-proliferation-of-rat-hepatocytes-in-vitro
#1
Xiaoguang Chen, Xuemin Zhu, Yumei Liu, Qiongxia Lv, Jun Ma
The management of hepatic failure is undoubtedly difficult, and poor results have led to the search for novel therapeutic approaches. Nowadays, anti-apoptotic gene therapy is considered as an ideal approach. It has been proved that phospholipase Cγ2 (PLCγ2) is involved in the apoptosis of immune cells and tumor cells; however, whether this gene is related to hepatocyte death is still unclear. This study examined the role of PLCγ2 by inhibiting its expression in rat hepatocytes with siRNA. We also further analyzed the cellular mechanism by which the expression inhibition of PLCγ2 induces cell death...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29236298/leptin-a-new-therapeutic-target-for-treatment-of-diabetes-mellitus
#2
Kanwal Rehman, Muhammad Sajid Hamid Akash, Zunaira Alina
Leptin is an endogenous protein having 167 amino acids and is derived from adipocytes. It hass tertiary structure that resembles with that of the pro-inflammatory cytokines family. The fundamental role of leptin is to maintain the energy homeostasis with the aid of its counter hormone called ghrelin, known as the "hunger hormone". Small quantities of leptin are also present in various tissues like ovary, placenta, pituitary gland, mammary gland, skeletal muscle, stomach and lymphoid tissue. Expression of leptin is strongly associated with various inflammatory responses and immune system, and plays crucial role in the pathophysiology of obesity and development of diabetes mellitus (DM) and insulin resistance...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29236198/sdf-1-induces-tnf-mediated-apoptosis-in-cardiac-myocytes
#3
Andrew A Jarrah, Martina Schwarskopf, Edward R Wang, Thomas LaRocca, Ashwini Dhume, Shihong Zhang, Lahouria Hadri, Roger J Hajjar, Alison D Schecter, Sima T Tarzami
Chemokines are small secreted proteins with chemoattractant properties that play a key role in inflammation. One such chemokine, Stromal cell-derived factor-1 (SDF-1) also known as CXCL12, and its receptor, CXCR4, are expressed and functional in cardiac myocytes. SDF-1 both stimulates and enhances the cellular signal which attracts potentially beneficial stem cells for tissue repair within the ischemic heart. Paradoxically however, this chemokine is known to act in concert with the inflammatory cytokines of the innate immune response which contributes to cellular injury through the recruitment of inflammatory cells during ischemia...
December 13, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/29236056/the-potential-of-frog-skin-derived-peptides-for-development-into-therapeutically-valuable-immunomodulatory-agents
#4
REVIEW
Jelena M Pantic, Ivan P Jovanovic, Gordana D Radosavljevic, Nebojsa N Arsenijevic, J Michael Conlon, Miodrag L Lukic
The aim of this article is to review the immunoregulatory actions of frog skin-derived peptides in order to assess their potential as candidates for immunomodulatory or anti-inflammatory therapy. Frog skin peptides with demonstrable immunomodulatory properties have been isolated from skin secretions of a range of species belonging to the families Alytidae, Ascaphidae, Discoglossidae, Leptodactylidae, Pipidae and Ranidae. Their effects upon production of inflammatory and immunoregulatory cytokines by target cells have been evaluated ex vivo and effects upon cytokine expression and immune cell activity have been studied in vivo by flow cytometry after injection into mice...
December 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29236046/advances-in-proteomic-techniques-for-cytokine-analysis-focus-on-melanoma-research
#5
REVIEW
Helena Kupcova Skalnikova, Jana Cizkova, Jakub Cervenka, Petr Vodicka
Melanoma is a skin cancer with permanently increasing incidence and resistance to therapies in advanced stages. Reports of spontaneous regression and tumour infiltration with T-lymphocytes makes melanoma candidate for immunotherapies. Cytokines are key factors regulating immune response and intercellular communication in tumour microenvironment. Cytokines may be used in therapy of melanoma to modulate immune response. Cytokines also possess diagnostic and prognostic potential and cytokine production may reflect effects of immunotherapies...
December 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29235846/cu-ii-doped-polydopamine-coated-gold-nanorods-for-tumor-theranostics
#6
Shuwei Liu, Lu Wang, Min Lin, Dandan Wang, Ziqi Song, Shuyao Li, Rui Ge, Xue Zhang, Yi Liu, Zhimin Li, Hongchen Sun, Bai Yang, Hao Zhang
Gold nanorods (AuNRs) are potentially useful in tumor theranostics, but the poor stability, high toxicity, and rapid removal by the immune system seriously limit their theranostic applications. In our study, we demonstrate the fabrication of Cu(II)-doped polydopamine-coated AuNR (AuNR@CuPDA), which significantly improves the potentials in tumor theranostics. Besides the improvement of physiological stability and biocompatibility, the PDA shell increases the photothermal performance and prolongs the blood circulation time of AuNRs...
December 13, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29235428/does-smallpox-vaccination-modify-hiv-disease-progression-among-art-naive-people-living-with-hiv-in-africa
#7
A Diouf, H Trottier, T J Youbong, N F Ngom-Guéye, O Ndiaye, A Seck, D Sarr, S Diop, M Seydi, S Mboup, V K Nguyen, A Jaye
We examined the association between a history of smallpox vaccination and immune activation (IA) in a population of antiretroviral therapy-naïve people living with HIV (PLHIV). A cross-sectional study was conducted in Senegal from July 2015 to March 2017. Smallpox vaccination was ascertained by the presence of smallpox vaccine scar and IA by the plasma level of β-2-microglobulin (β2m). The association was analysed using logistic regression and linear regression models. The study population comprised 101 PLHIV born before 1980 with a median age of 47 years (interquartile range (IQR) = 42-55); 57·4% were women...
December 13, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/29235402/biofilm-related-disease
#8
Jose Luis Del Pozo
Biofilm formation represents a protected mode of growth that renders bacterial cells less susceptible to antimicrobials and to killing by host immune effector mechanisms and so enables the pathogens to survive in hostile environments and also to disperse and colonize new niches. Biofilm disease includes device-related infections, chronic infections in the absence of a foreign body, and even malfunction of medical devices. Areas covered: This review puts forward a new medical entity that represents a major public health issue, which we have named "biofilm-related disease"...
December 13, 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/29235284/-recent-research-progress-in-immunomodulatory-effects-of-chinese-herbal-medicine-on-asthma-treatment
#9
REVIEW
Fang-Fang Zhou, Zhao-Xia Xu, Aipire Adila, Jin-Yao Li
Asthma is a kind of chronic respiratory inflammation, commonly with breathlessness, chest tightness, coughing, recurrent episodes of wheezing and airflow obstruction, severely affecting human health. A variety of immunocytes are involved in this chronic disease. Chinese herbal medicine(CHM) has a long history in the treatment of asthma. A large number of studies have shown that CHM could ameliorate asthma symptoms through regulating cellular immune responses. This paper reviewed the studies of CHM on the regulation of immunocytes and their mechanisms in recent years, including the count of inflammatory cells, maturation of dendritic cells, balance of helper T cell subtypes, induction of regulatory T cells and intracellular signaling pathways...
October 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29235261/interferon-%C3%AE-2-and-interferon-%C3%AE-induce-the-degranulation-independent-production-of-vegf-a-and-il-1-receptor-antagonist-and-other-mediators-from-human-mast-cells
#10
Sharon A Oldford, Suzanne P Salsman, Liliana Portales-Cervantes, Raidan Alyazidi, Robert Anderson, Ian D Haidl, Jean S Marshall
BACKGROUND: Mast cells are resident immune effector cells, often studied in the context of allergic disease. Found in substantial numbers at sites of potential infection they are increased at sites of angiogenesis and can be pivotal for the sensing and clearance of a variety of pathogens. Interferons (IFNs) are cytokines that are critical for host defence against intracellular pathogens. Increased levels of IFNs are observed during viral infection and in autoimmune diseases. IFNs are also widely used therapeutically and have been examined in the therapy of severe asthma...
December 13, 2017: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/29235226/reduced-therapeutic-effect-of-antiviral-drugs-in-patients-with-hepatitis-b-virus-reactivation-after-hematopoietic-stem-cell-transplantation
#11
Masamichi Kimura, Koji Nishikawa, Hisashi Sakamaki, Masashi Mizokami, Kiminori Kimura
BACKGROUND: Patients with resolved Hepatitis B virus (HBV) infection following hematopoietic stem cell transplantation (HSCT) are potentially at high risk of HBV reactivation. Although anti-viral drug therapy is recommended when HBV DNA reappears in the serum, drug efficacy after HBV reactivation remains unclear. METHODS: Host immune response against HBV was investigated via immunological analyses at 12 months after entecavir (ETV) treatment in six HSCT-treated and five non-HSCT-treated patients with HBV reactivation, and 18 patients with chronic hepatitis B (CHB)...
December 13, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/29235214/the-effect-of-administration-of-copper-nanoparticles-to-chickens-in-their-drinking-water-on-the-immune-and-antioxidant-status-of-the-blood
#12
Katarzyna Ognik, Iwona Sembratowicz, Ewelina Cholewińska, Jan Jankowski, Krzysztof Kozłowski, Jerzy Juśkiewicz, Zenon Zduńczyk
The aim of this experiment was to determine what dosage of copper (Cu) nanoparticles, added to a standard dietary supplementation with copper sulfate, would improve antioxidant and immune defense in chickens. The experiment was conducted with 126 broiler chickens assigned to seven treatments with three pens per treatment and six broiler chickens per pen. The basal-diet treatment did not receive Cu nanoparticles (nano-Cu) and as shown by analyses it was Cu-deficient (-29% vs. National Research Council (NRC) recommendations; 5...
December 12, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/29235197/superoxide-dismutase-from-helicobacter-pylori-suppresses-the-production-of-pro-inflammatory-cytokines-during-in-vivo-infection
#13
Andrew Stent, Alison L Every, Yok T Chionh, Garrett Z Ng, Philip Sutton
BACKGROUND: Helicobacter pylori has undergone considerable adaptation to allow chronic persistence within the gastric environment. While H. pylori-associated diseases are driven by an excessive inflammation, severe gastritis is detrimental to colonization by this pathogen. Hence, H. pylori has developed strategies to minimize the severity of gastritis it triggers in its host. Superoxide dismutase (SOD) is well known for its role in protecting against oxidative attack; less recognized is its ability to inhibit immunity, shown for SOD from mammalian sources and those of some bacterial species...
December 13, 2017: Helicobacter
https://www.readbyqxmd.com/read/29235095/immune-cells-regulate-vegf-signaling-via-release-of-vegf-and-antagonistic-soluble-vegf-receptor-1
#14
Timm Hoeres, Martin Wilhelm, Manfred Smetak, Elisabeth Holzmann, Gundula Schulze-Tanzil, Josef Birkmann
Vascular endothelial growth factor (VEGF) is an important regulator of physiological and pathological angiogenesis. Beside malignant and stromal cells, local immune cells shape VEGF signaling in the tumor microenvironment. Aminobisphosphonates like zoledronic acid (Zol) are drugs known to inhibit osteoclast activity and bone resorption, but also have immunomodulatory and anti-tumor effects. These properties have previously been linked to the downregulation of VEGF and interference with tumor neo-angiogenesis...
December 13, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29234980/low-dose-interleukin-2-as-a-modulator-of-treg-homeostasis-after-hsct-current-understanding-and-future-perspectives
#15
REVIEW
Ken-Ichi Matsuoka
CD4+CD25+Foxp3+ Treg is a functionally distinct subset of mature T cells with broad suppressive activity and has been shown to play an important role in the establishment of immune tolerance after HSCT. Altered cytokine environment in post-HSCT lymphopenia with a relative functional deficiency of IL-2 could hamper the reconstitution of Treg, leading to refractory GVHD. Based on the theory of low-dose IL-2 in which Treg can be selectively stimulated through the high-affinity IL-2 receptor, clinical studies have been conducted and demonstrated that low-dose IL-2 administration can restore Treg homeostasis and promote the expansion of this subset on the polymorphic processes of Treg reconstitution after HSCT...
December 12, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/29234969/monoclonal-antibodies-for-treatment-of-eosinophilic-esophagitis
#16
REVIEW
Mahsa Eskian, MirHojjat Khorasanizadeh, Amal H Assa'ad, Nima Rezaei
Eosinophilic esophagitis (EoE) is a chronic inflammatory disease of the esophagus affecting both children and adults, with debilitating and progressive symptoms. EoE has shown an explosive epidemiological rise in the past few decades. Many patients experience a poor level of disease control despite maximal use of available guideline-based therapies, which seriously hampers their quality of life. Diet restrictions and systemic and topical corticosteroids are the current mainstays of EoE therapy, but are associated with significant efficacy, treatment compliance, and safety issues such as oral or esophageal candidiasis, growth retardation, osteopenia, osteoporosis, glucose intolerance, and cataract formation...
December 12, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/29234933/micrornas-and-metastasis-small-rnas-play-big-roles
#17
Jongchan Kim, Fan Yao, Zhenna Xiao, Yutong Sun, Li Ma
MicroRNAs (miRNAs) are small non-coding RNAs regulating post-transcriptional gene expression. They play important roles in many biological processes under physiological or pathological conditions, including development, metabolism, tumorigenesis, metastasis, and immune response. Over the past 15 years, significant insights have been gained into the roles of miRNAs in cancer. Depending on the cancer type, miRNAs can act as oncogenes, tumor suppressors, or metastasis regulators. In this review, we focus on the role of miRNAs as components of molecular networks regulating metastasis...
December 12, 2017: Cancer Metastasis Reviews
https://www.readbyqxmd.com/read/29234829/-drug-therapy-of-acne-inversa
#18
REVIEW
S Schneider-Burrus, E Arpa, C Kors, T Stavermann, R Sabat, G Kokolakis
Acne inversa is a chronic inflammatory destructive skin disease that affects about 1% of the population. The therapy should be personalized and consists of surgical and conservative procedures. Antibiotics are administered either topically or systemically. Combination therapy with clindamycin and rifampicin for 10-12 weeks can be very effective. Furthermore, TNF-α inhibitors show adequate efficacy and can be recommended. Adalimumab is the only approved drug product for systemic treatment of acne inversa...
December 12, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/29234719/compression-stockings-as-an-effective-treatment-for-erythema-nodosum-case-series
#19
K B Golisch, S P Gottesman, R J Segal
Erythema nodosum (EN) is a septal panniculitis that is characterized clinically by tender, erythematous, subcutaneous nodules that are predominately localized on the pretibial lower legs. EN affects women more than men and can be idiopathic or secondary to another disease process such as infection or an immune response. Treatment options for erythema nodosum are suboptimal and often involve significant side effects or require a change in lifestyle. We investigated the effects of moderate 20 mmHg to 30 mmHg compression stockings as an alternative treatment method in two female patients with recurrent erythema nodosum...
December 2017: International Journal of Women's Dermatology
https://www.readbyqxmd.com/read/29234668/a-genome-wide-screen-for-fty720-sensitive-mutants-reveals-genes-required-for-ros-homeostasis
#20
Kanako Hagihara, Kanako Kinoshita, Kouki Ishida, Shihomi Hojo, Yoshinori Kameoka, Ryosuke Satoh, Teruaki Takasaki, Reiko Sugiura
Fingolimod hydrochloride (FTY720), a sphingosine-1-phosphate (S1P) analogue, is an approved immune modulator for the treatment of multiple sclerosis (MS). Notably, in addition to its well-known mode of action as an S1P modulator, accumulating evidence suggests that FTY720 induces apoptosis in various cancer cells via reactive oxygen species (ROS) generation. Although the involvement of multiple signaling molecules, such as JNK (Jun N-terminal kinase), Akt (alpha serine/threonine-protein kinase) and Sphk has been reported, the exact mechanisms how FTY720 induces cell growth inhibition and the functional relationship between FTY720 and these signaling pathways remain elusive...
November 27, 2017: Microbial Cell
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