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Nuclear and Molecular Medicine

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https://www.readbyqxmd.com/read/27913954/the-anti-inflammatory-activities-of-two-major-withanolides-from-physalis-minima-via-acting-on-nf-%C3%AE%C2%BAb-stat3-and-ho-1-in-lps-stimulated-raw264-7-cells
#1
Rui-Jun Li, Cai-Yun Gao, Chao Guo, Miao-Miao Zhou, Jun Luo, Ling-Yi Kong
Physalis minima has been traditionally used as a folk herbal medicine in China for the treatment of many inflammatory diseases. However, little is known about its anti-inflammatory constituents and associated molecular mechanisms. In our study, withaphysalin A (WA) and 2, 3-dihydro-withaphysalin C (WC), two major withanolide-type compounds, were obtained from the anti-inflammatory fraction of P. minima. Both WA and WC significantly inhibited the production of nitrite oxide (NO), prostaglandin E2 (PGE2), and several pro-inflammatory cytokines, such as interleukin-1β (IL-1β), IL-6, and tumor necrosis factor-α (TNF-α) in lipopolysaccharide (LPS)-activated RAW264...
December 2, 2016: Inflammation
https://www.readbyqxmd.com/read/27910772/structural-characterization-and-immunological-activities-of-a-novel-water-soluble-polysaccharide-from-the-fruiting-bodies-of-culinary-medicinal-winter-mushroom-flammulina-velutipes-agaricomycetes
#2
Ting Feng, Wei Jia, Wen-Han Wang, Chi-Chung Lin, Hua Fan, Jing-Song Zhang, Hai-Ying Bao
A water-soluble polysaccharide, designated FVPA2, was isolated from the fruiting bodies of Flammulina velutipes using DEAE Sepharose Fast Flow and gel-permeation chromatography. Its structure was elucidated by monosaccharide composition and methylation analysis, ultraviolet, Fourier transform infrared spectrometry, and nuclear magnetic resonance spectroscopy. Results showed that FVPA2 was a homogeneous heteropolysaccharide containing galactose, fucose, and mannose in a molar ratio of 5:1:1. High-performance liquid chromatography indicated its molecular weight as 3...
2016: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/27904870/preclinical-study-of-68-ga-dotatoc-biodistribution-assessment-in-syrian-rats-and-evaluation-of-absorbed-dose-in-human-organs
#3
Mojdeh Naderi, Samaneh Zolghadri, Hassan Yousefnia, Ali Ramazani, Amir Reza Jalilian
OBJECTIVES: Gallium-68 DOTA-DPhe(1)-Tyr(3)-Octreotide ((68)Ga-DOTATOC) has been applied by several European centers for the treatment of a variety of human malignancies. Nevertheless, definitive dosimetric data are yet unavailable. According to the Society of Nuclear Medicine and Molecular Imaging, researchers are investigating the safety and efficacy of this radiotracer to meet Food and Drug Administration requirements. The aim of this study was to introduce the optimized procedure for (68)Ga-DOTATOC preparation, using a novel germanium-68 ((68)Ge)/(68)Ga generator in Iran and evaluate the absorbed doses in numerous organs with high accuracy...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27893829/sansevieria-roxburghiana-schult-schult-f-family-asparagaceae-attenuates-type-2-diabetes-and-its-associated-cardiomyopathy
#4
Niloy Bhattacharjee, Ritu Khanra, Tarun K Dua, Susmita Das, Bratati De, M Zia-Ul-Haq, Vincenzo De Feo, Saikat Dewanjee
BACKGROUND: Sansevieria roxburghiana Schult. & Schult. F. (Family: Asparagaceae) rhizome has been claimed to possess antidiabetic activity in the ethno-medicinal literature in India. Therefore, present experiments were carried out to explore the protective role of edible (aqueous) extract of S. roxburghiana rhizome (SR) against experimentally induced type 2 diabetes mellitus (T2DM) and its associated cardiomyopathy in Wistar rats. METHODS: SR was chemically characterized by GC-MS analysis...
2016: PloS One
https://www.readbyqxmd.com/read/27866729/molecular-imaging-in-the-diagnosis-of-alzheimer-s-disease-and-related-disorders
#5
REVIEW
L Koric, E Guedj, M O Habert, F Semah, P Branger, P Payoux, F Le Jeune
INTRODUCTION: The diagnosis of Alzheimer's disease (AD) and its related disorders rely on clinical criteria. There is, however, a large clinical overlap between the different neurodegenerative diseases affecting cognition and, frequently, there are diagnostic uncertainties with atypical clinical presentations. Current clinical practices can now regularly use positron emission tomography (PET) and single-photon emission computed tomography (SPECT) molecular imaging to help resolve such uncertainties...
November 17, 2016: Revue Neurologique
https://www.readbyqxmd.com/read/27863567/advancing-precision-nuclear-medicine-and-molecular-imaging-for-lymphoma
#6
REVIEW
Chadwick L Wright, Joseph J Maly, Jun Zhang, Michael V Knopp
PET with fluorodeoxyglucose F 18 ((18)F FDG-PET) is a meaningful biomarker for the detection, targeted biopsy, and treatment of lymphoma. This article reviews the evolution of (18)F FDG-PET as a putative biomarker for lymphoma and addresses the current capabilities, challenges, and opportunities to enable precision medicine practices for lymphoma. Precision nuclear medicine is driven by new imaging technologies and methodologies to more accurately detect malignant disease. Although quantitative assessment of response is limited, such technologies will enable a more precise metabolic mapping with much higher definition image detail and thus may make it a robust and valid quantitative response assessment methodology...
January 2017: PET Clinics
https://www.readbyqxmd.com/read/27843479/protective-effect-of-psoralea-corylifolia-l-seed-extract-against-palmitate-induced-neuronal-apoptosis-in-pc12-cells
#7
Yunkyoung Lee, Hee-Sook Jun, Yoon Sin Oh
The extract of Psoralea corylifolia seeds (PCE) has been widely used as a herbal medicine because of its beneficial effect on human health. In this study, we investigated the protective effects and molecular mechanisms of PCE on palmitate- (PA-) induced toxicity in PC12 cells, a neuron-like cell line. PCE significantly increased cell viability in PA-treated PC12 cells and showed antiapoptotic effects, as evidenced by decreased expression of cleaved caspase-3, cleaved poly(ADP-ribose) polymerase, and bax protein as well as increased expression of bcl-2 protein...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27834922/bee-venom-inhibits-porphyromonas-gingivalis-lipopolysaccharides-induced-pro-inflammatory-cytokines-through-suppression-of-nf-%C3%AE%C2%BAb-and-ap-1-signaling-pathways
#8
Woon-Hae Kim, Hyun-Jin An, Jung-Yeon Kim, Mi-Gyeong Gwon, Hyemin Gu, Jae-Bok Park, Woo Jung Sung, Yong-Chul Kwon, Kyung-Duck Park, Sang Mi Han, Kwan-Kyu Park
Periodontitis is a chronic inflammatory disease that leads to destruction of tooth supporting tissues. Porphyromonas gingivalis (P. gingivalis), especially its lipopolysaccharides (LPS), is one of major pathogens that cause periodontitis. Bee venom (BV) has been widely used as a traditional medicine for various diseases. Previous studies have demonstrated the anti-inflammatory, anti-bacterial effects of BV. However, a direct role and cellular mechanism of BV on periodontitis-like human keratinocytes have not been explored...
November 10, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27830433/erratum-to-american-society-of-nuclear-cardiology-and-society-of-nuclear-medicine-and-molecular-imaging-joint-position-statement-on-the-clinical-indications-for-myocardial-perfusion-pet
#9
Timothy M Bateman, Vasken Dilsizian, Rob S Beanlands, E Gordon DePuey, Gary V Heller, David A Wolinsky
No abstract text is available yet for this article.
November 9, 2016: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/27825045/therapeutic-effects-of-rosmarinic-acid-on-airway-responses-in-a-murine-model-of-asthma
#10
Zhengmin Liang, Haiying Nie, Yangfeng Xu, Jianbo Peng, Yun Zeng, Yingyi Wei, Xuemei Wen, Jiaming Qiu, Weiting Zhong, Xuming Deng, Jiakang He
Rosmarinic acid (RA) is an active component of a traditional Chinese herbal medicine. Previously, we reported that RA exerted a strong anti-inflammatory effect in a mouse acute lung injury model. Therefore, we hypothesized that RA might also have potential therapeutic effects in a murine model of asthma. In this study, we aimed to evaluate the anti-asthmatic activity of RA and explored its possible molecular mechanisms of action. Female BALB/c mice that had been sensitized to and challenged with ovalbumin (Ova) were treated with RA (20mg/kg) 1h after challenge...
November 5, 2016: International Immunopharmacology
https://www.readbyqxmd.com/read/27822699/editorial-european-journal-of-nuclear-medicine-and-molecular-imaging
#11
EDITORIAL
Ambros J Beer, Ingrid Dijkgraaf
No abstract text is available yet for this article.
November 7, 2016: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27811124/molecular-imaging-of-gastroenteropancreatic-neuroendocrine-tumors-current-status-and-future-directions
#12
REVIEW
Christophe M Deroose, Elif Hindié, Electron Kebebew, Bernard Goichot, Karel Pacak, David Taïeb, Alessio Imperiale
Through diagnostic imaging and peptide receptor radionuclide therapy, nuclear medicine has earned a major role in gastroenteropancreatic neuroendocrine tumors (GEP NETs). GEP NETs are diagnosed fortuitously or on the basis of symptoms or hormonal syndrome. The functional tumor characteristics shown by radionuclide imaging allow for more accurate staging and treatment selection. Tumor grade helps determine which tracer should be selected. In the past, (111)In-pentetreotide has been successful in well-differentiated (G1 and G2) tumors...
December 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/27793631/additional-value-of-hybrid-spect-ct-systems-in-neuroendocrine-tumors-adrenal-tumors-pheochromocytomas-and-paragangliomas
#13
K K Wong, S Chondrogiannis, D Fuster, C Ruiz, M C Marzola, F Giammarile, P M Colletti, D Rubello
The aim of this review was to evaluate the potential advantages of SPECT/CT hybrid imaging in the management of neuroendocrine tumors, adrenal tumors, pheochromocytomas and paragangliomas. From the collected data, the superiority of fused images was observed as providing both functional/molecular and morphological imaging compared to planar imaging. This provided an improvement in diagnostic imaging, with significant advantages as regards: (1) precise locating of the lesions; (2) an improvement in characterization of the findings, resulting higher specificity, improved sensitivity, and overall greater accuracy, (3) additional anatomical information derived from the CT component; (4) CT-based attenuation correction and potential for volumetric dosimetry calculations, and (5) improvement on the impact on patient management (e...
October 25, 2016: Revista Española de Medicina Nuclear e Imagen Molecular
https://www.readbyqxmd.com/read/27743505/metabolite-profiling-of-withania-somnifera-roots-hydroalcoholic-extract-using-lc-ms-gc-ms-and-nmr-spectroscopy
#14
Mahendra Kumar Trivedi, Parthasarathi Panda, Kalyan Kumar Sethi, Snehasis Jana
Ashwagandha (Withania somnifera) is a very well-known herbal medicine and it was well studied for its active metabolites throughout the World. Although, nearly 40 withanolides were isolated from W. somnifera root extract, still there is remaining unidentified metabolites due to very low abundance and natural variation. Advanced separation technology with online identification by mass and nuclear magnetic resonance (NMR) are now-a-days used to find out the new compounds in the crude herbal extract. This article described the metabolite profiling of ashwagandha root hydroalcoholic extract using ultra-performance liquid chromatography coupled with a positive ion electrospray ionization tandem mass spectrometry through gas chromatography mass spectrometry (GC-MS) and NMR analysis...
October 15, 2016: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/27719665/plastid-molecular-pharming-ii-production-of-biopharmaceuticals-by-plastid-transformation
#15
Henrik Aronsson, Petter Larsson, Sandra Bains
Higher plants have been used in medicine throughout human history. While traditional medicinal uses relied on compounds produced naturally by plants, recent advances have enabled the use of plant-based factories to produce diverse agents including pharmaceuticals, antibiotics, and vaccines. The genes responsible for the production of these substances can be either transiently expressed in plants or integrated into their nuclear genome or plastid genome (plastome) by genetic transformation. This review focuses on the application of plastid transformation of higher plants to produce biopharmaceuticals for human applications that are neither antibiotics nor vaccines...
October 4, 2016: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/27709959/64cu2-ions-as-pet-probe-an-emerging-paradigm-in-molecular-imaging-of-cancer
#16
Rubel Chakravarty, Sudipta Chakraborty, Ashutosh Dash
Positron emission tomography (PET) imaging has transformed diagnostic nuclear medicine and become an essential strategy in cancer management. With the expected growth of this molecular imaging modality, there is a recognized need for new PET probes to address the clinical challenges in the early diagnosis and staging of various types of cancers. In this endeavor, the prospect of using 64Cu in the form of simple Cu2+ ions as PET probe is not only a cost-effective proposition, but also seems poised to broaden the palette of molecular imaging probes in the foreseeable future...
October 6, 2016: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/27704399/consensus-on-the-management-of-advanced-radioactive-iodine-refractory-differentiated-thyroid-cancer-on-behalf-of-the-spanish-society-of-endocrinology-thyroid-cancer-working-group-gtseen-and-spanish-rare-cancer-working-group-gethi
#17
J Capdevila, J C Galofré, E Grande, C Zafón Llopis, T Ramón Y Cajal Asensio, E Navarro González, P Jiménez-Fonseca, J Santamaría Sandi, J M Gómez Sáez, G Riesco Eizaguirre
Thyroid cancer is the single most prevalent endocrine malignancy; differentiated thyroid cancer (DTC) accounts for more than 90 % of all malignancies and its incidence has been rising steadily. For more patients, surgical treatment, radioactive iodine (RAI) ablation, and thyroid-stimulating hormone (TSH) suppressive therapy achieve an overall survival (OS) rate of 97.7 % at 5 years. Nevertheless, locoregional recurrence occurs in up to 20 % and distant metastases in approximately 10 % at 10 years. Two-thirds of these patients will never be cured with radioactive iodine therapy and will become RAI-refractory, with a 3-year OS rate of less than 50 %...
October 4, 2016: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/27696232/correlation-of-braf-mutation-and-suvmax-levels-in-thyroid-cancer-patients-incidentally-detected-in-18-f-fluorodeoxyglucose-positron-emission-tomography
#18
Aysenur Ozderya, Sule Temizkan, Aylin Ege Gul, Sule Ozugur, Mehmet Sargin, Kadriye Aydin
The prognostic importance of (18)F-fluorodeoxyglucose avidity in primary thyroid tumor and molecular basis responsible for its mechanism has not yet been well characterized. In this study, we aimed to evaluate the correlation between the maximum standardized uptake levels and B-type Raf kinase mutation positivity in incidentally detected papillary thyroid cancer patients during (18)F-fluorodeoxyglucose positron emission tomography examination. We retrospectively evaluated 6873 (18)F-fluorodeoxyglucose-positron emission tomography scans of consecutive subjects from a database search for tumor staging in 2014 at our hospital Nuclear Medicine Center...
October 1, 2016: Endocrine
https://www.readbyqxmd.com/read/27695262/kayeassamin-a-isolated-from-the-flower-of-mammea-siamensis-triggers-apoptosis-by-activating-caspase-3-8-in-hl-60-human-leukemia-cells
#19
Takuhiro Uto, Nguyen Huu Tung, Pinjutha Thongjankaew, Sorasak Lhieochaiphant, Yukihiro Shoyama
BACKGROUND: Mammea siamensis (Miq.) T. Anders. is used as a medicinal plant in Thailand and has several traditional therapeutic properties. In a previous study, we isolated eight compounds from the flower of M. siamensis and demonstrated that kayeassamin A (KA) exhibited potent antiproliferative activity against human leukemia and stomach cancer cell lines. OBJECTIVE: In this study, we investigated the effect of KA on cell viability and apoptotic mechanisms in HL-60 human leukemia cells...
October 2016: Pharmacognosy Research
https://www.readbyqxmd.com/read/27694180/psma-based-radioligand-therapy-for-metastatic-castration-resistant-prostate-cancer-the-bad-berka-experience-since-2013
#20
Harshad R Kulkarni, Aviral Singh, Christiane Schuchardt, Karin Niepsch, Manal Sayeg, Yevgeniy Leshch, Hans-Juergen Wester, Richard P Baum
A potential milestone in personalized nuclear medicine is theranostics of metastatic castration-resistant prostate cancer (mCRPC) based on molecular imaging using PET/CT with (68)Ga-labeled prostate-specific membrane antigen (PSMA) ligands and molecular radiotherapy using PSMA-targeted radioligand therapy (PRLT) with (177)Lu-PSMA ligands. (68)Ga-PSMA PET/CT enables accurate detection of mCRPC lesions with high diagnostic sensitivity and specificity and provides quantitative and reproducible data that can be used to select patients for PRLT and therapeutic monitoring...
October 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
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