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https://www.readbyqxmd.com/read/28321043/immunolocalization-of-novel-corticomedullary-tubule-injury-markers-in-cynomolgus-monkeys-treated-with-amphotericin-b
#1
J Eric McDuffie, Jing Ying Ma, Yunhai Zhang, Frederic S Almy, Xiaoyun Wu, Ke Li, Manisha Sonee, Ryan Meng, Michele Rizzolio, Sandra S Snook
Amphotericin B (AmpB) nephrotoxicity was used to assess the utility of drug‑induced kidney injury (DIKI) biomarkers in an exploratory study in male cynomolgus monkeys. All animals had quantifiable levels of AmpB in plasma on days 1 and 4. There were no clinical signs of AmpB‑induced toxicity in this study. The gold standard method used to confirm AmpB‑induced DIKI was anatomic pathology which revealed microscopic lesions with varying grades of severity. Immunolocalization of alpha‑1 microglobulin (α‑1M), kidney injury molecule 1 (KIM‑1), osteopontin (OPN) and neutrophil gelatinase‑associated lipocalin (NGAL) proteins was evaluated in formalin‑fixed, paraffin‑embedded monkey kidney tissue sections...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28277843/nanoethosomal-formulation-of-gammaoryzanol-for-skin-aging-protection-and-wrinkle-improvement-a-histopathological-study
#2
Saman Heydari, Saeed Ghanbarzadeh, Behzad Anoosh, Mohammad Reza Ranjkesh, Yousef Javadzadeh, Maryam Kouhsoltani, Hamed Hamishehkar
BACKGROUND: Free radical scavengers and antioxidants, with the main focus on enhanced targeting to the skin layers, can provide protection against skin ageing. OBJECTIVE: The aim of the present study was to prepare nanoethosomal formulation of Gammaoryzanol (GO), a water insoluble antioxidant, for its dermal delivery to prevent skin aging. METHODS: Nanoethosomal formulation was prepared by a modified ethanol injection method and characterized by using laser light scattering, scanning electronic microscope (SEM) and X-ray diffraction (XRD) techniques...
March 3, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28274810/non-clinical-safety-evaluation-and-risk-assessment-to-human-of-aleglitazar-a-dual-ppar-%C3%AE-%C3%AE-agonist-and-its-major-human-metabolite
#3
Martin Bopst, Elke-Astrid Atzpodien
The non-clinical safety profile of aleglitazar, a peroxisome proliferator activated receptor alpha/gamma agonist, and its major human metabolite M6 was studied in a complete package consisting of drug metabolism and pharmacokinetics characterization, safety pharmacology, genotoxicity, repeat dose toxicity, reproductive toxicity and carcinogenicity studies. These studies identified the following main targets similar to other PPAR agonists: red blood cell parameters, liver, heart, kidney, ovaries, testes, bone marrow, adipose tissue, and fluid accumulation...
March 6, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28245462/cashew-nut-positioning-during-stone-tool-use-by-wild-bearded-capuchin-monkeys-sapajus-libidinosus
#4
Tiago Falótico, Lydia V Luncz, Magdalena S Svensson, Michael Haslam
Wild capuchin monkeys (Sapajus libidinosus) at Serra da Capivara National Park, Brazil, regularly use stone tools to break open cashew nuts (Anacardium spp.). Here we examine 2 approaches used by the capuchins to position the kidney-shaped cashew nuts on an anvil before striking with a stone tool. Lateral positioning involves placing the nut on its flatter, more stable side, therefore requiring less attention from the monkey during placement. However, the less stable and never previously described arched position, in which the nut is balanced with its curved side uppermost, requires less force to crack the outer shell...
2016: Folia Primatologica; International Journal of Primatology
https://www.readbyqxmd.com/read/28228227/%C3%AE-butenolide-and-furanone-derivatives-from-the-soil-derived-fungus-aspergillus-sclerotiorum-psu-rspg178
#5
Patima Phainuphong, Vatcharin Rukachaisirikul, Kwanruthai Tadpetch, Yaowapa Sukpondma, Saowanit Saithong, Souwalak Phongpaichit, Sita Preedanon, Jariya Sakayaroj
Chromatographic separation of the broth extract of the soil-derived fungus Aspergillus sclerotiorum PSU-RSPG178 resulted in isolation of four γ-butenolide-furanone dimers, aspersclerotiorones A-D, a furanone derivative, aspersclerotiorone E, and two γ-butenolide derivatives, aspersclerotiorones F and G, together with six known compounds, penicillic acid, dihydropenicillic acid, 5,6-dihydro-6-hydroxypenicillic acid, 6-methoxy-5,6-dihydropenicillic acid, coculnol and (4R,5R)-4,5-dihydroxy-3-methoxy-5-methylcyclohex-2-en-1-one...
May 2017: Phytochemistry
https://www.readbyqxmd.com/read/28224391/development-and-evaluation-of-a-nanoemulsion-containing-ursolic-acid-a-promising-trypanocidal-agent-nanoemulsion-with-ursolic-acid-against-t-cruzi
#6
Erika Cristina Vargas de Oliveira, Zumira Aparecida Carneiro, Sérgio de Albuquerque, Juliana Maldonado Marchetti
Over a hundred years after the discovery of Chagas disease, this ailment continues to affect thousands of people. For more than 40 years, only two drugs have been available to treat it. Ursolic acid is a naturally occurring terpene that has shown a good trypanocidal action. However, the hydrophobicity of this compound presents a challenge for the development of proper delivery systems. Nanostructured systems are a prominent in delivering lipophilic drugs. Thus, a nanoemulsion containing ursolic acid was developed and had its trypanocidal activity and cytotoxicity evaluated...
February 21, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28217929/phytochemical-characterization-antibacterial-acetylcholinesterase-inhibitory-and-cytotoxic-properties-of-cryptostephanus-vansonii-an-endemic-amaryllid
#7
Mack Moyo, Adeyemi O Aremu, Jude C Chukwujekwu, Jiri Gruz, Jiri Skorepa, Karel Doležal, Cuthbert A T Katsvanga, Johannes Van Staden
Cryptostephanus vansonii I. Verd., an endemic Amaryllidaceae species from Zimbabwe, was evaluated for its acetylcholinesterase (AChE) inhibitory and cytotoxicity properties using Ellman's colorimetric method and the tetrazolium-based colorimetric assay against Vero monkey kidney cells, respectively. The plant extracts were also evaluated for their antibacterial activity against five bacteria. Furthermore, phytochemical profiles of the extracts were determined using ultra-high performance liquid chromatography coupled with tandem mass spectrometry analysis...
February 20, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28215474/establishment-of-disseminated-intravascular-coagulation-dic-model-by-a-single-iv-administration-of-escherichia-coli-derived-lipopolysaccharide-lps-to-cynomolgus-monkeys-and-evaluation-of-its-pathophysiological-status
#8
Hirofumi Minomo, Kengo Inoue, Shuko Sakaki, Takanobu Okazaki, Kinji Kobayashi, Kazuhiko Inoue, Atsuro Miyata
We prepared a DIC model by administrating LPS to cynomolgus monkeys, and investigated its potential for evaluations of new medicines for DIC therapy. Peripheral blood mononuclear cells (PBMC) collected from cynomolgus monkeys were incubated with LPS (8 types), and TNF-α levels in the media were measured. LPS from Escherichia coli (K-235) was most appropriate in terms of larger increases and smaller variation in TNF-α levels. PBMC from rats, cynomolgus monkeys or humans were incubated with LPS (K-235), and the TNF-α response to LPS was investigated...
February 2, 2017: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/28190821/outbreak-of-pasteurellosis-in-captive-bolivian-squirrel-monkeys-saimiri-boliviensis
#9
Mizuki Yoshino, Jun Sasaki, Konomi Kuramochi, Mitsutaka Ikezawa, Natsuko Mukaizawa, Masanobu Goryo
In September 2012, five Bolivian squirrel monkeys housed in a zoological park died within sequential several days without obvious clinical signs. In a necrospy, one monkey presented swelling of the kidney with multifocal white nodules in the parenchyma, and other two had pulmonary congestion. Histopathologically, multifocal bacterial colonies of gram-negative coccobacillus were found in the sinusoid of the liver in all monkeys examined (Nos.1-4). Additionally, purulent pyelonephritis, pneumonia and disseminated small bacterial colonies in blood vessels were observed...
February 11, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28168856/biophysical-characterization-and-structural-determination-of-the-potent-cytotoxic-psathyrella-asperospora-lectin
#10
João P Ribeiro, Mohamed Ali Abol Hassan, Razina Rouf, Evelin Tiralongo, Tom W May, Christopher J Day, Anne Imberty, Joe Tiralongo, Annabelle Varrot
A lectin with strong cytotoxic effect on human colon cancer HT29 and monkey kidney VERO cells was recently identified from the Australian indigenous mushroom Psathyrella asperospora and named PAL. We herein present its biochemical and structural analysis using a multidisciplinary approach. Glycan arrays revealed binding preference towards N-acetylglucosamine (GlcNAc) and, to a lesser extent, towards sialic acid (Neu5Ac). Submicromolar and millimolar affinity was measured by surface plasmon resonance for GlcNAc and NeuAc, respectively...
February 7, 2017: Proteins
https://www.readbyqxmd.com/read/28150811/size-dependent-cellular-uptake-mechanism-and-cytotoxicity-toward-calcium-oxalate-on-vero-cells
#11
Xin-Yuan Sun, Qiong-Zhi Gan, Jian-Ming Ouyang
Urinary crystals with various sizes are present in healthy individuals and patients with kidney stone; however, the cellular uptake mechanism of calcium oxalate of various sizes has not been elucidated. This study aims to compare the internalization of nano-/micron-sized (50 nm, 100 nm, and 1 μm) calcium oxalate monohydrate (COM) and dihydrate (COD) crystals in African green monkey renal epithelial (Vero) cells. The internalization and adhesion of COM and COD crystals to Vero cells were enhanced with decreasing crystal size...
February 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28137817/pharmacokinetics-of-the-novel-echinocandin-cd101-in-multiple-animal-species
#12
Voon Ong, Kenneth D James, Steven Smith, B Radha Krishnan
CD101 is a novel semi-synthetic echinocandin with antifungal activity against Candida and Aspergillus spp. The PK of CD101 administered intravenously to mice, rats, dogs, cynomolgus monkeys, and chimpanzees are presented. CD101 consistently exhibited very low clearance, modest volume of distribution, and long half-life across all species tested. In mouse, rat, dog, cynomolgus monkey, and chimpanzee, CD101 clearance [mL/min/kg] was 0.10, 0.47, 0.30, 0.41, and 0.06; Vss [mL/kg] was 206, 1390, not determined, 597, and 400; and t1/2 [h] was 25, 39, 53, 40, and 81, respectively...
January 30, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28071653/prophylactic-orthosteric-inhibition-of-leukocyte-integrin-cd11b-cd18-prevents-long-term-fibrotic-kidney-failure-in-cynomolgus-monkeys
#13
Abbas Dehnadi, A Benedict Cosimi, Rex Neal Smith, Xiangen Li, José L Alonso, Terry K Means, M Amin Arnaout
Ischaemic acute kidney injury (AKI), an inflammatory disease process, often progresses to chronic kidney disease (CKD), with no available effective prophylaxis. This is in part due to lack of clinically relevant CKD models in non-human primates. Here we demonstrate that inhibition of the archetypal innate immune receptor CD11b/CD18 prevents progression of AKI to CKD in cynomolgus monkeys. Severe ischaemia-reperfusion injury of the right kidney, with subsequent periods of the left ureter ligation, causes irreversible right kidney failure 3, 6 or 9 months after AKI...
January 10, 2017: Nature Communications
https://www.readbyqxmd.com/read/28068513/nrf2-dependent-induction-of-innate-host-defense-via-heme-oxygenase-1-inhibits-zika-virus-replication
#14
Hanxia Huang, Barry Falgout, Kazuyo Takeda, Kenneth M Yamada, Subhash Dhawan
We identified primary human monocyte-derived macrophages (MDM) as vulnerable target cells for Zika virus (ZIKV) infection. We demonstrate dramatic effects of hemin, the natural inducer of the heme catabolic enzyme heme oxygenase-1 (HO-1), in the reduction of ZIKV replication in vitro. Both LLC-MK2 monkey kidney cells and primary MDM exhibited hemin-induced HO-1 expression with major reductions of >90% in ZIKV replication, with little toxicity to infected cells. Silencing expression of HO-1 or its upstream regulatory gene, nuclear factor erythroid-related factor 2 (Nrf2), attenuated hemin-induced suppression of ZIKV infection, suggesting an important role for induction of these intracellular mediators in retarding ZIKV replication...
March 2017: Virology
https://www.readbyqxmd.com/read/28056568/in-vitro-metabolite-formation-in-human-hepatocytes-and-cardiomyocytes-and-metabolism-and-tissue-distribution-in-monkeys-of-the-2-c-methylguanosine-prodrug-bms-986094
#15
Wenying Li, Kevin J Trouba, Li Ma, Jae Kwagh, Christopher Storck, Yongxin Zhu, Oliver Flint, William G Humphreys, Jian Wang, Ang Liu, Bonnie Wang, Michael J Graziano, Marc H Davies, Thomas P Sanderson
BMS-986094, a 2'-C-methylguanosine prodrug for the treatment of chronic hepatitis C virus infection, was withdrawn from phase 2 clinical trials because of unexpected cardiac and renal toxicities. To better understand these toxicities, the in vitro metabolism of BMS-986094 in human hepatocytes (HHs) and human cardiomyocytes (HCMs) and the measurement of BMS-986094 and selected metabolites in monkey plasma and tissues were assessed. BMS-986094 was extensively metabolized by HHs and HCMs, resulting in more efficient formation and accumulation of the active triphosphorylated metabolite, INX-09114, and less efficient efflux of metabolites in HCMs...
January 1, 2017: International Journal of Toxicology
https://www.readbyqxmd.com/read/28051359/electron-microscopy-of-alkhumra-hemorrhagic-fever-virus
#16
Tariq A Madani, El-Tayb M E Abuelzein, Sawsan M Jalalah, Huda Abu-Araki, Esam I Azhar, Ahmed M Hassan, Hussein M S Al-Bar
Alkhumra hemorrhagic fever virus (AHFV) is a newly described zoonotic flavivirus that was first isolated during 1994-1995 from the Alkhumra district south of Jeddah, Saudi Arabia. Subsequently, the virus was also isolated from Makkah city (2001-2003) and Najran (2008-2009), Saudi Arabia. The virus causes acute febrile illness with hepatitis, hemorrhagic manifestations, and encephalitis. A case fatality rate of 25% was reported among hospitalized patients. Although several biological and molecular characteristics of the virus have been published, no data are available on electron microscopic features of the virus...
March 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28051352/antisense-oligonucleotides-targeting-raf-1-block-japanese-encephalitis-virus-in-vitro-and-in-vivo
#17
Li Zhang, Qingjun Li, Xiaoran Ding, Bo Zhang, Qiling Zhang, Xinyan Qu, Yujia Huo, Jing Yang, Shengqi Wang
Japanese encephalitis virus (JEV) infections represent a major health concern in Southeast Asia since no effective treatments are available. Recently, several reports have demonstrated that inhibition of certain host cell proteins prevents viral infection. Raf-1 kinase is a central component of many signaling pathways involved in normal cell growth and oncogenic transformation, and Ras/Raf/ERK signaling activation has been observed during viral infections (including JEV infection). In this study, Raf-1 was confirmed to be upregulated by JEV infection, which suggested that Raf-1 might be important for JEV infection and might be a target for novel anti-JEV drugs...
January 4, 2017: Nucleic Acid Therapeutics
https://www.readbyqxmd.com/read/28033565/isolation-molecular-characterization-and-in-vitro-schizogonic-development-of-sarcocystis-sp-ex-accipiter-cooperii-from-a-naturally-infected-cooper-s-hawk-accipiter-cooperii
#18
David S Lindsay, Shiv K Verma, David Scott, Jitender P Dubey, Alexa R von Dohlen
Raptors serve as the definitive host for several Sarcocystis species. The complete life cycles of only a few of these Sarcocystis species that use birds of prey as definitive hosts have been described. In the present study, Sarcocystis species sporocysts were obtained from the intestine of a Cooper's hawk (Accipiter cooperii) and were used to infect cell cultures of African green monkey kidney cells to isolate a continuous culture and describe asexual stages of the parasite. Two clones of the parasite were obtained by limiting dilution...
April 2017: Parasitology International
https://www.readbyqxmd.com/read/27998279/mycobacterium-tuberculosis-infections-in-cynomolgus-monkey-transplant-recipients-and-institution-of-a-screening-program-for-the-prevention-and-control-of-tuberculosis
#19
Eun Wha Choi, Kyo Won Lee, Tae Min Kim, Hyojun Park, Mi Ri Jeon, Chan Woo Cho, Jae Berm Park, Sungjoo Kim
BACKGROUND: Tuberculosis is a major health concern in not only humans, but also in non-human primates. In this paper, we report recent cases of Mycobacterium tuberculosis in cynomolgus monkeys from Cambodia used in transplantation research in a Korean facility and describe a program instituted to prevent and control subsequent infections. CASE PRESENTATION: All monkeys were antibody negative for tuberculosis during quarantine; however, suspected tuberculosis gross lesions were observed in two cynomolgus monkeys who underwent allograft kidney transplantation...
December 20, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27968712/high-resolution-laser-ablation-inductively-coupled-plasma-mass-spectrometry-imaging-of-cisplatin-induced-nephrotoxic-side-effects
#20
Thibaut Van Acker, Stijn J M Van Malderen, Marjolein Van Heerden, James Eric McDuffie, Filip Cuyckens, Frank Vanhaecke
Two-dimensional elemental mapping (bioimaging) via laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) was performed on 5 μm thick formalin-fixed, paraffin-embedded kidney tissue sections from Cynomolgus monkeys administered with increasing pharmacological doses of cisplatin. Laterally resolved pixels of 1 μm were achieved, enabling elemental analysis on a (sub-)cellular level. Zones of high Pt response were observed in the renal cortex, where proximal tubules are present, the epithelium of which is responsible for partial reabsorption of cisplatin...
November 16, 2016: Analytica Chimica Acta
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