Dendrocalamus Velutinus N.-H. Xia, V. T. Nguyen &amp; V. D. Vu (Poaceae), a New Species from Vietnam

Nguyen, Van Tho; Le, Viet Lam; Vu, Van Dung; Xia, Nian‐He

doi:10.15553/c2012v672a6

Cited by 900 publications

(202 citation statements)

References 6 publications

(5 reference statements)

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“…Furthermore, the functionalizations of organic linkers [94,95,97,98] and the modifications of the structures of metal clusters [99,100] in MOFs can both reduce their HOMO-LUMO gap width, leading to their expanded light-absorption capacity. Hence, most MOF photocatalysts can exhibit photocatalytic activities in a visible range, which is favorable to the improved light-utilization efficiency.…”

Section: Roles Of Mofs In Photocatalytic Co 2 Reductionmentioning

confidence: 99%

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Metal–Organic‐Framework‐Based Catalysts for Photoreduction of CO₂

2018

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Photoreduction of CO into reusable carbon forms is considered as a promising approach to address the crisis of energy from fossil fuels and reduce excessive CO emission. Recently, metal-organic frameworks (MOFs) have attracted much attention as CO photoreduction-related catalysts, owing to their unique electronic band structures, excellent CO adsorption capacities, and tailorable light-absorption abilities. Recent advances on the design, synthesis, and CO reduction applications of MOF-based photocatalysts are discussed here, beginning with the introduction of the characteristics of high-efficiency photocatalysts and structural advantages of MOFs. The roles of MOFs in CO photoreduction systems as photocatalysts, photocatalytic hosts, and cocatalysts are analyzed. Detailed discussions focus on two constituents of pure MOFs (metal clusters such as Ti-O, Zr-O, and Fe-O clusters and functional organic linkers such as amino-modified, photosensitizer-functionalized, and electron-rich conjugated linkers) and three types of MOF-based composites (metal-MOF, semiconductor-MOF, and photosensitizer-MOF composites). The constituents, CO adsorption capacities, absorption edges, and photocatalytic activities of these photocatalysts are highlighted to provide fundamental guidance to rational design of efficient MOF-based photocatalyst materials for CO reduction. A perspective of future research directions, critical challenges to be met, and potential solutions in this research field concludes the discussion.

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Section: Roles Of Mofs In Photocatalytic Co 2 Reductionmentioning

confidence: 99%

“…[66][67][68]94,95,98,99,151] Amino-modified, photosensitizer-functionalized, and electron-rich conjugated linkers possess broad optical absorptions, excess electron densities, and strong interactions with CO 2 , which could be selected to act as linkers in MOF photocatalysts with high catalytic activities.…”

Section: Organic Linkersmentioning

confidence: 99%

Metal–Organic‐Framework‐Based Catalysts for Photoreduction of CO₂

2018

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“…11) As the results, plancipyrroside B (2) showed potent NO production inhibitory activity with IC 50 of 5.94±0.34 µM, which was comparable to that of the positive control cardamonin 12) (IC 50 of 2.20±0.27 µM). Plancipyrroside A (1) also significantly suppressed the NO production in RAW264.7 cells with IC 50 of 16.61±1.85 µM.…”

Section: 9)mentioning

confidence: 60%

Pyrrole Oligoglycosides from the Starfish <i>Acanthaster planci</i> Suppress Lipopolysaccharide-Induced Nitric Oxide Production in RAW264.7 Macrophages

Vien

Hạnh

Hương

et al. 2016

CHEMICAL & PHARMACEUTICAL BULLETIN

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Key words Acanthaster planci; starfish; pyrrole oligoglycoside; isolation; nitric oxide (NO) productionStarfish are benthic widely distributed marine invertebrates found from shallow to deep waters in all the oceans. Starfish have attracted organic chemists, biochemists, and pharmacologists as a fascinating source of bioactive secondary metabolites mainly steroidal and ceramide derivatives. 1-3)Of these, the crown-of-thorns starfish, Acanthaster planci is found throughout the tropical Indo-Pacific region being one of the largest starfish in the world. The adult A. planci is a carnivorous predator that feeds exclusively on coral polyps and is largely responsible for the damage inflicted on the Great Barrier Reef. Steroid and ceramide glycosides are main constituents of this starfish. 3,4)Our previous studies yielded several steroid glycosides from A. planci. [5][6][7] In continuation of our investigations on this species, the current paper deals with the isolation and structure elucidation of two new pyrrole oligoglycosides namely plancipyrrosides A and B (1 and 2, Fig. 1). Their inhibitory effects on lipopolysaccharide (LPS)-induced nitric oxide (NO) production in RAW264.7 cells were also evaluated. Results and DiscussionUsing various chromatographic procedures, two new pyrrole oligoglycosides were isolated from methanol extract of the Vietnamese starfish A. planci. Plancipyrroside A (1), isolated as a colorless powder revealed a quasi-molecular ion peak at m/z 696.2715 [M+H] +

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“…Some biocompatible polymers such as poly(lactide)-tocopheryl polyethylene glycol, chitosan and PEG, have been widely used for the tumor-targeted delivery and site-specifically release of of anticancer drugs (paclitaxel, curcumin and doxorubicin) [26][27][28]. In recent years, the use of liposomes to increase the therapeutic index of chemotheraputic drugs and to offers drug targeting and controlled release has emerged as a promising strategy against cancer [8,29,30].…”

Section: Resultsmentioning

confidence: 99%

Enhanced anticancer efficacy and tumor targeting through folate-PEG modified nanoliposome loaded with 5-fluorouracil

Tran

et al. 2017

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Cancer targeted therapies have attracted considerable attention over the past year. Recently, 5-fluouracil (5-FU), which has high toxicity to normal cells and short half-life associated with rapid metabolism, is one of the most commonly used therapies in the treatment of cancer. In this study the folic acid-conjugated pegylated nanoliposomes were synthesized and then loaded into them with 5-FU to improve the anti-tumor efficacy. The average size of liposomes (LPs) was about 52.7 nm which was identified by TEM. In the liposome uptake studies, the level uptake of folate-conjugated liposomes has increased compared to non-conjugated LPs according to LPs concentration, incubation time and presence of concentration of free folic acid (FA). The MTT assay and apoptotic test were carried out in HCT116 and MCF-7 cells for 24 or 48 h. The results revealed that the folate-PEG modified 5-Fu loaded nanoliposomes had strong cytotoxicity to cancer cell compared to pure 5-FU or PEG modified 5-FU loaded liposomes in a concentration- and time-dependent manner, and mainly enhanced the cancer cell death through folate-mediated endocytosis. Hence, the folate-PEG modified nanoliposome is a potential targeted drug-delivery system for the treatment of FR-positive cancers.

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Dendrocalamus Velutinus N.-H. Xia, V. T. Nguyen & V. D. Vu (Poaceae), a New Species from Vietnam

Abstract: A new species, Dendrocalamus velutinus N.-H. Xia, V. T. Nguyen & V. D. Vu (Poaceae) from Vietnam, is described, illustrated and discussed. It is similar to Dendrocalamus calostachyus (Kurz) Kurz in general appearance, but differs by many morphological characters.

Cited by 900 publications

References 6 publications

Metal–Organic‐Framework‐Based Catalysts for Photoreduction of CO₂

Metal–Organic‐Framework‐Based Catalysts for Photoreduction of CO₂

Pyrrole Oligoglycosides from the Starfish <i>Acanthaster planci</i> Suppress Lipopolysaccharide-Induced Nitric Oxide Production in RAW264.7 Macrophages

Enhanced anticancer efficacy and tumor targeting through folate-PEG modified nanoliposome loaded with 5-fluorouracil

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Dendrocalamus Velutinus N.-H. Xia, V. T. Nguyen & V. D. Vu (Poaceae), a New Species from Vietnam

Abstract: A new species, Dendrocalamus velutinus N.-H. Xia, V. T. Nguyen & V. D. Vu (Poaceae) from Vietnam, is described, illustrated and discussed. It is similar to Dendrocalamus calostachyus (Kurz) Kurz in general appearance, but differs by many morphological characters.

Cited by 900 publications

References 6 publications

Metal–Organic‐Framework‐Based Catalysts for Photoreduction of CO2

Metal–Organic‐Framework‐Based Catalysts for Photoreduction of CO2

Pyrrole Oligoglycosides from the Starfish <i>Acanthaster planci</i> Suppress Lipopolysaccharide-Induced Nitric Oxide Production in RAW264.7 Macrophages

Enhanced anticancer efficacy and tumor targeting through folate-PEG modified nanoliposome loaded with 5-fluorouracil

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Product

Resources

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Metal–Organic‐Framework‐Based Catalysts for Photoreduction of CO₂

Metal–Organic‐Framework‐Based Catalysts for Photoreduction of CO₂