Read by QxMD icon Read


Xiao Wu, Shanhu Wu, Yuexin Liu, Rong Guan, Fangmei Liang, Min Song, Taijun Hang
NiuHuangJieDu Tablets (NHJDT), a popular realgar (As4 S4 ) containing patented traditional Chinese medicine (TCM), is widely used in the treatment of acute tonsillitis, pharyngitis, periodontitis and mouth ulcer. However, arsenic is considered as one of the most toxic elements, leading to growing concerns about the quality and safety of realgar-containing TCMs recently. In this study, health risk assessment of arsenic in realgar and NHJDT was conducted through oral administration of both substances to rats with single and multiple doses, respectively...
July 2018: Journal of Trace Elements in Medicine and Biology
Wenfeng Xu, Yuehu Pei, Shuo Xu, Haifeng Wang, Pengfei Jin
Niuhuang Jiedu Tablet (NJT) is a classical formula in treating acute tonsillitis, pharyngitis, and so on. In the formula, significant level of Realgar as a potentially toxic element is contained. Our previous experiments revealed that it was less toxic for combined Realgar in NJT. However, the active fraction of this prescription with toxicity alleviation effect on Realgar was still obscure. NJT was divided into five different polar fractions (NJT-PET, NJT-25, NJT-50, NJT-75, and NJT-95), and we explored the toxicity alleviation effect on Realgar ...
2018: Evidence-based Complementary and Alternative Medicine: ECAM
Sandip S Sathe, Chandan Mahanta, Pushpanjali Mishra
In the dynamic cycling of oxic and anoxic aqueous alluvial aquifer environments, varying Arsenic (As) concentrations are controlled by both abiotic and biotic factors. Studies have shown a significant form of toxic As (III) being released through the reductive dissolution of iron-oxy/hydroxide minerals and microbial reduction mechanisms, which leads to a serious health concern. The present study was performed in order to assess the abiotic and biotic factors influencing As release into the alluvial aquifer groundwater in Brahmaputra floodplain, India...
March 5, 2018: Journal of Contaminant Hydrology
Christoph Schoo, Sebastian Bestgen, Ralf Köppe, Serygey N Konchenko, Peter W Roesky
The reduction of P4, As4 and As4S4 (realgar) with the sterically encumbered reductants [(DippForm)2Ln(thf)2] (Ln = Sm, Yb; DippForm = {(2,6-iPr2C6H3)NC(H) = N(2,6-iPr2C6H3)}-) is reported. For the first time, purely f-element containing inverse inorganic sandwich complexes [{(DippForm)2Sm}2(μ2-η4:η4-E4)] (E = P, As), featuring a π-aromatic cyclo [E4]2- middle deck, were obtained upon reaction with P4 and As4. The reaction with realgar leads to a cage disruption and the formation of the unusual species [{(DippForm)(DippForm-AsS2)}Ln(thf)]...
March 28, 2018: Chemical Communications: Chem Comm
Peng Song, Yang Hai, Xin Wang, Longhe Zhao, Baoqiang Chen, Peng Cui, Qinjian Xie, Lan Yu, Yang Li, Zhengrong Wu, Hongyu Li
Realgar (As4 S4 ), as an arsenic sulfide mineral drug, has a good therapeutic reputation for anticancer in Traditional Chinese Medicine, and has recently been reported to inhibit angiogenesis in tumor growth. However, considering the poor solubility and low bioavailability of realgar, large dose of realgar and long period of treatment are necessary for achieving the effective blood medicine concentration. In present study, we resolved the crucial problem of poor solubility of realgar by using intrinsic biotransformation in microorganism, and investigated underlying mechanisms of realgar transforming solution (RTS) for antiangiogenesis...
March 15, 2018: Archives of Pharmacal Research
La Jiang, Huan-Hua Xu, Zhen-Hong Jiang, Shi-Han Yang, Qiao-Li Shi, Zeng-Chun Ma, Yue Gao, Zhi-Wu Chen
The results of a toxicity analysis showed differences from those of the existing experimental data. Therefore, HPLC-ICP-MS was used to analyze the soluble arsenic content at different valences in realgar prepared with water grind processing, which were collected from 3 companies. The results showed that the free arsenic of the 3 companies did not exceed the limit of Chinese Pharmacopoeia. However, if the free arsenic was calculated based on the total value of As(Ⅲ) + As(Ⅴ), free arsenic of 1 company exceeded the limit of Chinese Pharmacopoeia...
December 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Fen Yang, Shaowen Xie, Chaoyang Wei, Jinxin Liu, Hongzhi Zhang, Tao Chen, Jing Zhang
In this study, multiple types of samples, including soils, plants, litter and soil invertebrates, were collected from a former arsenic (As) mine in China. The total As concentrations in the soils, earthworms, litter and the aboveground portions of grass from the contaminated area followed the decreasing order of 83-2224 mg/kg, 31-430 mg/kg, 1-62 mg/kg and 2-23 mg/kg, respectively. X-ray absorption near-edge structure (XANES) analysis revealed that the predominant form of As in the soils was arsenate (As(V)), while no arsenite (As(III)) was detected...
June 1, 2018: Science of the Total Environment
Hong-Hu Zhu, Zhi-Ping Guo, Jin-Song Jia, Qian Jiang, Hao Jiang, Xiao-Jun Huang
The aim of our study was to evaluate the impact of oral arsenic (the realgar-indigo naturalis formula, RIF) and all-trans retinoic acid (ATRA) on coagulopathy in acute promyelocytic leukemia (APL) compared with intravenous arsenic trioxide (ATO) and ATRA during induction. Mitoxantrone was added to all the patients at a dose of 1.4mg/m2 per day for 5-7 days. D-dimer levels, prothrombin time (PT), fibrinogen (Fbg) levels and the platelet count were comparably analyzed among 83 newly diagnosed APL patients treated with RIF (n=45) or with ATO (n=38)...
February 2018: Leukemia Research
Ao Li, Jing-Yao Zhang, Xiao Xiao, Song-Song Wang, Jian-Bo Wan, Yu-Shuang Chai, Peng Li, Yi-Tao Wang
An-Gong-Niu-Huang Wan (AGNH) is a famous traditional Chinese medicine prescription that contains cinnabar (HgS) and realgar (As2 S2 ); the clinical practice of AGNH is hindered because both mercury and arsenic are hepatorenal toxic metalloids. It is noted that the cinnabar and realgar in AGNH are not used alone, but rather combined with different kinds of medicinal herbs as a formula to use. In this study, we evaluated the hepatorenal protective effects of the medicinal herbs in AGNH after co-exposure to cinnabar and realgar for 4 weeks in mice...
December 2, 2017: Food and Chemical Toxicology
Fen Yang, Shaowen Xie, Jinxin Liu, Chaoyang Wei, Hongzhi Zhang, Tao Chen, Jing Zhang
Birds are at a higher level in the food chain; however, the potential bioaccumulation and biotransformation of arsenic (As) in birds in As mines has rarely been studied. In this study, four passerine bird species (tree sparrow [Passer montanus], light-vented bulbul [Pycnonotus sinensis], Garrulax canorus [Leucodioptron canorus], and magpie [Pica pica]) were collected from an abandoned As mine in China. The highest recorded As concentrations were 4.95 mg/kg and 51.65 mg/kg in muscles and feathers, respectively...
February 2018: Chemosphere
Chiara Caratelli, Roberto Cammi, Riccardo Chelli, Marco Pagliai, Gianni Cardini, Vincenzo Schettino
The spectroscopic properties of As4 S4 with pressure have been computed by the quantum mechanical XP-PCM method and by density functional theory periodic calculations. The comparison has allowed the interpretation of the available experimental data. By comparison of the two methods and with experiments, we show that the XP-PCM method is able to reproduce the same behavior of the periodic calculations with much lower computational cost allowing to be adopted as a first choice computational tool for a qualitative interpretation of molecular crystals properties under pressure...
November 22, 2017: Journal of Physical Chemistry. A
Danka Cholujova, Zdenka Bujnakova, Erika Dutkova, Teru Hideshima, Richard W Groen, Constantine S Mitsiades, Paul G Richardson, David M Dorfman, Peter Balaz, Kenneth C Anderson, Jana Jakubikova
Multiple myeloma (MM), a B cell malignancy characterized by clonal proliferation of plasma cells in the bone marrow, remains incurable despite the use of novel and conventional therapies. In this study, we demonstrated MM cell cytotoxicity triggered by realgar (REA; As4 S4 ) nanoparticles (NREA) versus Arsenic trioxide (ATO) against MM cell lines and patient cells. Both NREA and ATO showed in vivo anti-MM activity, resulting in significantly decreased tumour burden. The anti-MM activity of NREA and ATO is associated with apoptosis, evidenced by DNA fragmentation, depletion of mitochondrial membrane potential, cleavage of caspases and anti-apoptotic proteins...
December 2017: British Journal of Haematology
Xiao-Na Liu, Qiu-Sheng Zheng, Xiao-Qing Che, Zhi-Sheng Wu, Yan-Jiang Qiao
The blending end-point determination of Angong Niuhuang Wan (AGNH) is a key technology problem. The control strategy based on quality by design (QbD) concept proposes a whole blending end-point determination method, and provides a methodology for blending the Chinese materia medica containing mineral substances. Based on QbD concept, the laser induced breakdown spectroscopy (LIBS) was used to assess the cinnabar, realgar and pearl powder blending of AGNH in a pilot-scale experiment, especially the whole blending end-point in this study...
March 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Mo-Han Zhang, Jia-Qing Chen, Hui-Min Guo, Rui-Ting Li, Yi-Qiao Gao, Yuan Tian, Zun-Jian Zhang, Yin Huang
Realgar nanoparticles (NPs) are increasingly used as therapeutic agents for their enhanced anti-proliferation effect and cytotoxicity on cancer cells. However, the alteration of particle size may enhance biological reactivity as well as toxicity. A LC/MS and GC/MS based metabolomics approach was employed to explore the mechanism of realgar NPs-induced hepatotoxicity and identify potential biomarkers. Male Sprague-Dawley rats were administrated intragastrically with realgar or realgar NPs at a dose of 1.0 g·kg(-1)·d(-1) for 28 days and toxic effects of realgar NPs on liver tissues were examined by biochemical indicator analysis and histopathologic examination...
September 2017: Chinese Journal of Natural Medicines
Ming Xu, Jian-Ye Ren, Yuan-Cheng Guo, Bai-Xue Xu, Qing Zeng, Qi Hu, Yong-Ming Zhou, Jia-Hui Lu
OBJECTIVE: As the main component of traditional Chinese medicine realgar, arsenic disulfide (As2 S2 ) is widely used in treating myelodysplastic syndromes (MDS). The goal of the current study is to assess the effects of As2 S2 on bone marrow mononuclear cells (BMMNC) of MDS. METHODS: BMMNCs were obtained from 10 lower risk MDS patients, 5 higher risk MDS patients, and 3 healthy controls. Then, the cells were treated with As2 S2 for 48h, using vorinostat (also known as SAHA) as control...
November 2017: Leukemia Research
Huan-Hua Xu, Mei-Xi Wang, Hong-Ling Tan, Yu-Guang Wang, Xiang-Lin Tang, Cheng-Rong Xiao, Hua Li, Yue Gao, Zeng-Chun Ma
To investigate the effect of clinical dose of Realgar-Indigo Naturais formula (RIF) and large-dose of Realgar on main drug-metabolizing enzymes CYP450s of rat liver, as well as its regulatory effect on mRNA expression. Wistar rats were administrated orally with tested drugs for 14 days. A Cocktail method combined with HPLC-MS/MS was used in the determination of 4 cytochrome P450 isozymes (CYP1A2, CYP2B, CYP3A and CYP2C) in liver of the rats, and the mRNA expression levels of the above subtypes were detected by real-time fluorescent quantitative PCR...
February 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Fang Wang, Jin-Song Jia, Jing Wang, Ting Zhao, Qian Jiang, Hao Jiang, Hong-Hu Zhu
OBJECTIVE: We aimed to compare the kinetics of white blood cell (WBC) and explore predictive factors of leukocytosis in non-high-risk acute promyelocytic leukemia (APL), with oral arsenic plus all-trans retinoic acid (ATRA) or intravenous arsenic trioxide (ATO) plus ATRA as a first-line treatment. METHODS: The absolute count, doubling time and peak time of WBC were analyzed in 64 newly diagnosed non-high-risk APL patients who were treated with different induction regimens containing either oral Realgar-indigo naturalis formula (RIF) (n=35) or ATO (n=29)...
October 2017: Leukemia Research
Long Chen, Ming-Yang Yuan, Ke-Li Chen
In order to provide theoretical basis for the rapid identification of mineral traditional Chinese medicines(TCM) with near infrared (NIR)diffuse reflectance spectroscopy, Characteristic NIR spectra of 51 kinds of mineral TCMs were generalized and compared on the basis of the previous research, and the characteristic spectral bands were determined and analyzed by referring to mineralogical and geological literatures. It turned out that the NIR features of mineral TCMs were mainly at 8 000-4 000 cm ⁻¹ wavebands, which can be assigned as the absorption of water, -OH and[CO3 ²⁻] and so on...
October 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Xiuli Zhang, Ting Kang, Lian Zhang, Yingying Tong, Wenping Ding, Siyu Chen
Arsenic sulfide (As4S4) is the main component of Realgar which is widely used in traditional Chinese medicine. Previously we showed that As4S4 inhibited the proliferation of colon cancer cells through regulating nuclear factor of activated T cells (NFAT) pathway. Here we explore the role of NFAT in gastric cancer. We showed that As4S4 inhibited the expression of NFATc1, NFATc3, and NFATc4, and modulated the expression of NFATc2 accompanying with p53. The baseline expression of NFATc3 varied distinctly in gastric cancer cell lines (AGS, MGC803, MKN28, MKN45, and SGC7901) and the sensitivity of these cells to As4S4 was dissimilar, with AGS and MGC803 cells showing higher sensitivity while the SGC7901 cells relatively resistant...
August 8, 2017: Oncotarget
Jie Liu, Li-Xin Wei, Qi Wang, Yuan-Fu Lu, Feng Zhang, Jing-Zhen Shi, Cen Li, M George Cherian
ETHNOPHARMOCOLOGICAL RELEVANCE: Herbo-metallic preparations have a long history in the treatment of diseases, and are still used today for refractory diseases, as adjuncts to standard therapy, or for economic reasons in developing countries. AIM OF THE REVIEW: This review uses cinnabar (HgS) and realgar (As4S4) as mineral examples to discuss their occurrence, therapeutic use, pharmacology, toxicity in traditional medicine mixtures, and research perspectives. MATERIALS AND METHODS: A literature search on cinnabar and realgar from PubMed, Chinese pharmacopeia, Google and other sources was carried out...
August 31, 2017: Journal of Ethnopharmacology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"