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Acta Pharmaceutica Sinica. B

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https://www.readbyqxmd.com/read/29881688/biomonitoring-for-traditional-herbal-medicinal-products-using-dna-metabarcoding-and-single-molecule-real-time-sequencing
#1
Tianyi Xin, Zhichao Xu, Jing Jia, Christine Leon, Songnian Hu, Yulin Lin, Subramanyam Ragupathy, Jingyuan Song, Steven G Newmaster
Global concerns have been paid to the potential hazard of traditional herbal medicinal products (THMPs). Substandard and counterfeit THMPs, including traditional Chinese patent medicine, health foods, dietary supplements, etc. are potential threats to public health. Recent marketplace studies using DNA barcoding have determined that the current quality control methods are not sufficient for ensuring the presence of authentic herbal ingredients and detection of contaminants/adulterants. An efficient biomonitoring method for THMPs is of great needed...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881687/activation-of-an-unconventional-meroterpenoid-gene-cluster-in-neosartorya-glabra-leads-to-the-production-of-new-berkeleyacetals
#2
Tao Zhang, Jun Wan, Zhajun Zhan, Jian Bai, Bingyu Liu, Youcai Hu
Fungal genomes carry many gene clusters seemingly capable of natural products biosynthesis, yet most clusters remain cryptic or down-regulated. Genome mining revealed an unconventional paraherquonin-like meroterpenoid biosynthetic gene cluster in the chromosome of Neosartorya glabra . The cryptic or down-regulated pathway was activated by constitutive expression of pathway-specific regulator gene berA encoded within ber biosynthetic gene cluster. Chemical analysis of mutant Ng -OE: berA extracts enabled the isolation of four berkeleyacetal congeners, in which two of them are new...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881686/plastome-wide-comparison-reveals-new-snv-resources-for-the-authentication-of-dendrobium-huoshanense-and-its-corresponding-medicinal-slice-huoshan-fengdou
#3
Zhitao Niu, Jiajia Pan, Qingyun Xue, Shuying Zhu, Wei Liu, Xiaoyu Ding
Dendrobium species and their corresponding medicinal slices have been extensively used as traditional Chinese medicine (TCM) in many Asian countries. However, it is extremely difficult to identify Dendrobium species based on their morphological and chemical features. In this study, the plastomes of D. huoshanense were used as a model system to investigate the hypothesis that plastomic mutational hotspot regions could provide a useful single nucleotide variants (SNVs) resource for authentication studies. We surveyed the plastomes of 17 Dendrobium species, including the newly sequenced plastome of D...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881685/integrated-metabolomic-and-transcriptomic-analyses-revealed-the-distribution-of-saponins-in-panax-notoginseng
#4
Guangfei Wei, Linlin Dong, Juan Yang, Lianjuan Zhang, Jiang Xu, Feng Yang, Ruiyang Cheng, Ran Xu, Shilin Chen
Panax notoginseng is famous for its important therapeutic effects. Saponins are bioactive compounds found in different parts and developmental stages of P. notoginseng plants. Thus, it is urgently to study saponins distribution in different parts and growth ages of P. notoginseng plants. In this study, potential biomarkers were found, and their chemical characteristic differences were revealed through metabolomic analysis. High-performance liquid chromatography data indicated the higher content of saponins ( i...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881684/synergistic-immunoreaction-of-acupuncture-like-dissolving-microneedles-containing-thymopentin-at-acupoints-in-immune-suppressed-rats
#5
Qian Zhang, Chuncao Xu, Shiqi Lin, Huanbin Zhou, Gangtao Yao, Hu Liu, Lili Wang, Xin Pan, Guilan Quan, Chuanbin Wu
Dissolving microneedles carried drug molecules can effectively penetrate the stratum corneum of skin to improve the transdermal drug delivery. The traditional Chinese medicine acupuncture is based on the needle stimulation at a specific location (acupoint) to generate and transmit biochemical and physiological signals which alter the pathophysiological state of patients. However, the pain associated with conventional acupuncture needles and the requirement of highly trained professionals limit the development of acupuncture in non-Asian countries...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881683/inhalation-treatment-of-primary-lung-cancer-using-liposomal-curcumin-dry-powder-inhalers
#6
Tongtong Zhang, Yanming Chen, Yuanyuan Ge, Yuzhen Hu, Miao Li, Yiguang Jin
Lung cancer is the leading cause of cancer-related deaths. Traditional chemotherapy causes serious toxicity due to the wide bodily distribution of these drugs. Curcumin is a potential anticancer agent but its low water solubility, poor bioavailability and rapid metabolism significantly limits clinical applications. Here we developed a liposomal curcumin dry powder inhaler (LCD) for inhalation treatment of primary lung cancer. LCDs were obtained from curcumin liposomes after freeze-drying. The LCDs had a mass mean aerodynamic diameter of 5...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881682/implantable-sandwich-phbhhx-film-for-burst-free-controlled-delivery-of-thymopentin-peptide
#7
Ke Peng, Chengyu Wu, Guoxu Wei, Jinghui Jiang, Zhirong Zhang, Xun Sun
Sustained release and non-parental formulations of peptides and protein drugs are highly desirable because of enhanced therapeutic effects as well as improved patient compliance. This is especially true for small peptides such as thymopentin (TP5). To this end, implantable sandwich poly (hydroxybutyrate- co -hydroxyhexanoate) (PHBHHx) films were designed to prolong release time and to inhibit burst release phenomenon of TP5 by a simple volatilization method. In vitro release studies revealed that sandwich films had nearly no burst release...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881681/nanoparticles-with-high-payloads-of-pipemidic-acid-a-poorly-soluble-crystalline-drug-drug-initiated-polymerization-and-self-assembly-approach
#8
Elisabetta Pancani, Mario Menendez-Miranda, Alexandra Pastor, François Brisset, Marie-Françoise Bernet-Camard, Didier Desmaële, Ruxandra Gref
Nowadays, biodegradable polymers such as poly(lactic acid) (PLA), poly(D,L-lactic- co -glycolic acid) (PLGA) and poly( ε -caprolactone) (PCL) remain the most common biomaterials to produce drug-loaded nanoparticles (NPs). Pipemidic acid (PIP) is a poorly soluble antibiotic with a strong tendency to crystallize. PIP incorporation in PLA/PLGA NPs was challenging because of PIP crystals formation and burst release. As PIP had a poor affinity for the NPs, an alternative approach to encapsulation was used, consisting in coupling PIP to PCL...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881680/c-19-diterpenoid-alkaloid-arabinosides-from-an-aqueous-extract-of-the-lateral-root-of-aconitum-carmichaelii-and-their-analgesic-activities
#9
Qinglan Guo, Huan Xia, Xianhua Meng, Gaona Shi, Chengbo Xu, Chenggen Zhu, Tiantai Zhang, Jiangong Shi
Eight new C19 -diterpenoid alkaloid arabinosides, named aconicarmichosides E-L ( 1 - 8 ), were isolated from an aqueous extract of the lateral roots of Aconitum carmichaelii (Fu Zi). Their structures were determined by spectroscopic and chemical methods including 2D NMR experiments and acid hydrolysis. Compounds 1 - 8 , together with the previously reported four neoline 14- O -arabinosides from the same plant, represent the only examples of glycosidic diterpenoid alkaloids so far. At a dose of 1.0 mg/kg (i...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881679/a-novel-nitroreductase-enhanced-mri-contrast-agent-and-its-potential-application-in-bacterial-imaging
#10
Yun Liu, Leilei Zhang, Marc Nazare, Qingqiang Yao, Hai-Yu Hu
Nitroreductases (NTRs) are known to be able to metabolize nitro-substituted compounds in the presence of reduced nicotinamide adenine dinucleotide (NADH) as an electron donor. NTRs are present in a wide range of bacterial genera and, to a lesser extent, in eukaryotes hypoxic tumour cells and tumorous tissues, which makes it an appropriate biomarker for an imaging target to detect the hypoxic status of cancer cells and potential bacterial infections. To evaluate the specific activation level of NTR, great efforts have been devoted to the development of fluorescent probes to detect NTR activities using fluorogenic methods to probe its behaviour in a cellular context; however, NTR-responsive MRI contrast agents are still by far underexplored...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881678/-131-i-evans-blue-evaluation-of-necrosis-targeting-property-and-preliminary-assessment-of-the-mechanism-in-animal-models
#11
Qiaomei Jin, Xin Shan, Qi Luo, Dongjian Zhang, Yuanyu Zhao, Nan Yao, Fei Peng, Dejian Huang, Zhiqi Yin, Wei Liu, Jian Zhang
Necrosis is a form of cell death, which is related to various serious diseases such as cardiovascular disease, cancer, and neurodegeneration. Necrosis-avid agents (NAAs) selectively accumulated in the necrotic tissues can be used for imaging and/or therapy of related diseases. The aim of this study was to preliminarily investigate necrosis avidity of 131 I-evans blue (131 I-EB) and its mechanism. The biodistribution of 131 I-EB at 24 h after intravenous administration showed that the radioactivity ratio of necrotic to viable tissue was 3...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881677/design-of-sers-nanoprobes-for-raman-imaging-materials-critical-factors-and-architectures
#12
Mingwang Li, Yuanyuan Qiu, Chenchen Fan, Kai Cui, Yongming Zhang, Zeyu Xiao
Raman imaging yields high specificity and sensitivity when compared to other imaging modalities, mainly due to its fingerprint signature. However, intrinsic Raman signals are weak, thus limiting medical applications of Raman imaging. By adsorbing Raman molecules onto specific nanostructures such as noble metals, Raman signals can be significantly enhanced, termed surface-enhanced Raman scattering (SERS). Recent years have witnessed great interest in the development of SERS nanoprobes for Raman imaging. Rationally designed SERS nanoprobes have greatly enhanced Raman signals by several orders of magnitude, thus showing great potential for biomedical applications...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881676/the-combined-therapeutic-effects-of-131-iodine-labeled-multifunctional-copper-sulfide-loaded-microspheres-in-treating-breast-cancer
#13
Qiufang Liu, Yuyi Qian, Panli Li, Sihang Zhang, Zerong Wang, Jianjun Liu, Xiaoguang Sun, Michael Fulham, Dagan Feng, Zhigang Chen, Shaoli Song, Wei Lu, Gang Huang
Compared to conventional cancer treatment, combination therapy based on well-designed nanoscale platforms may offer an opportunity to eliminate tumors and reduce recurrence and metastasis. In this study, we prepared multifunctional microspheres loading 131 I-labeled hollow copper sulfide nanoparticles and paclitaxel (131 I-HCuSNPs-MS-PTX) for imaging and therapeutics of W256/B breast tumors in rats. 18 F-fluordeoxyglucose (18 F-FDG) positron emission tomography/computed tomography (PET/CT) imaging detected that the expansion of the tumor volume was delayed ( P <0...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881675/radiopaque-nano-and-polymeric-materials-for-atherosclerosis-imaging-embolization-and-other-catheterization-procedures
#14
REVIEW
Li Tian, Linfeng Lu, James Feng, Marites P Melancon
A review of radiopaque nano and polymeric materials for atherosclerosis imaging and catheterization procedures is presented in this paper. Cardiovascular diseases (CVDs) are the leading cause of death in the US with atherosclerosis as a significant contributor for mortality and morbidity. In this review paper, we discussed the physics of radiopacity and X-ray/CT, clinically used contrast agents, and the recent progress in the development of radiopaque imaging agents and devices for the diagnosis and treatment of CVDs...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881674/surface-enhanced-raman-nanoparticles-for-tumor-theranostics-applications
#15
REVIEW
Yangyang Li, Qiaolin Wei, Fei Ma, Xin Li, Fengyong Liu, Min Zhou
Raman spectroscopy, amplified by surface-enhanced Raman scattering (SERS) nanoparticles, can provide an in vivo imaging modality due to its high molecular specificity, high sensitivity, and negligible autofluorescence. The basis, composition, and methodologies developed for SERS nanoparticles are herein described. The research hotspots that are the focus in this paper are tumor imaging-guided theranostics and biosensing. The next breakthrough may be the development of biocompatible SERS nanoparticles and spectroscopic devices for clinical applications...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881673/fluorogen-activating-proteins-beyond-classical-fluorescent-proteins
#16
REVIEW
Shengnan Xu, Hai-Yu Hu
Fluorescence imaging is a powerful technique for the real-time noninvasive monitoring of protein dynamics. Recently, fluorogen activating proteins (FAPs)/fluorogen probes for protein imaging were developed. Unlike the traditional fluorescent proteins (FPs), FAPs do not fluoresce unless bound to their specific small-molecule fluorogens. When using FAPs/fluorogen probes, a washing step is not required for the removal of free probes from the cells, thus allowing rapid and specific detection of proteins in living cells with high signal-to-noise ratio...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881672/recent-developments-in-multimodality-fluorescence-imaging-probes
#17
REVIEW
Jianhong Zhao, Junwei Chen, Shengnan Ma, Qianqian Liu, Lixian Huang, Xiani Chen, Kaiyan Lou, Wei Wang
Multimodality optical imaging probes have emerged as powerful tools that improve detection sensitivity and accuracy, important in disease diagnosis and treatment. In this review, we focus on recent developments of optical fluorescence imaging (OFI) probe integration with other imaging modalities such as X-ray computed tomography (CT), magnetic resonance imaging (MRI), positron emission tomography (PET), single-photon emission computed tomography (SPECT), and photoacoustic imaging (PAI). The imaging technologies are briefly described in order to introduce the strengths and limitations of each techniques and the need for further multimodality optical imaging probe development...
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881671/editorial-for-molecular-imaging-and-theranostics
#18
EDITORIAL
Wei Lu
No abstract text is available yet for this article.
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29881670/editor-profile-guest-editor-of-special-column-on-molecular-imaging-and-theranostics
#19
EDITORIAL
(no author information available yet)
No abstract text is available yet for this article.
May 2018: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29719791/antihyperuricemic-effect-of-mangiferin-aglycon-derivative-j99745-by-inhibiting-xanthine-oxidase-activity-and-urate-transporter-1-expression-in-mice
#20
Zhizhen Qin, Shoubao Wang, Yihuang Lin, Ying Zhao, Shengqian Yang, Junke Song, Tao Xie, Jinlong Tian, Song Wu, Guanhua Du
A mangiferin aglycon derivative J99745 has been identified as a potent xanthine oxidase (XOD) inhibitor by previous in vitro study. This study aimed to evaluate the hypouricemic effects of J99745 in experimental hyperuricemia mice, and explore the underlying mechanisms. Mice were orally administered 600 mg/kg xanthine once daily for 7 days and intraperitoneally injected 250 mg/kg oxonic acid on the 7th day to induce hyperuricemia. Meanwhile, J99745 (3, 10, and 30 mg/kg), allopurinol (20 mg/kg) or benzbromarone (20 mg/kg) were orally administered to mice for 7 days...
March 2018: Acta Pharmaceutica Sinica. B
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