Displaying publications 181 - 200 of 2499 in total

Abstract:
Sort:
  1. Latest Updates in Dengue Fever Therapeutics: Natural, Marine and Synthetic Drugs
    Hosseini S, Muñoz-Soto RB, Oliva-Ramírez J, Vázquez-Villegas P, Aghamohammadi N, Rodriguez-Garcia A, et al.
    Curr Med Chem, 2020;27(5):719-744.
    PMID: 29956614 DOI: 10.2174/0929867325666180629124709
    In this paper, we review the history of Dengue, the mechanism of infection, the molecular characteristics and components of Dengue, the mechanism of entry to the target cells, cyclization of the genome and replication process, as well as translation of the proteins for virus assembly. The major emphasis of this work is on natural products and plant extracts, which were used for as palliative or adjuvant treatment of Dengue. This review article also summarizes the latest findings in regards to the marine products as effective drugs to target different symptoms of Dengue. Furthermore, an update on synthetic drugs for treating Dengue is provided in this review. As a novel alternative, we describe monoclonal antibody therapy for Dengue management and treatment.
    Matched MeSH terms: Plant Extracts
  2. Heavy metals uptake by terung pipit (Solanum torvum) in ultrabasic soil at Kuala Pilah, Negeri Sembilan
    Sahibin A, Wan Mohd. Razi I, Zulfahmi A, Tukimat L, Muhd Barzani G, Jumaat H, et al.
    Sains Malaysiana, 2008;37.
    This study was carried out at an ultrabasic area, Selaru and Felda Rokan Barat, Kuala Pilah, Negeri Sembilan. Eighteen samples of plant and its substrates were collected for determination of heavy metal contents such as Ni, Co, Cr, Mn and Fe in soils and plants. The plants were separated into different portion such as root, stem and leaf and extracted for their heavy metal content by wet digestion method whereas the soils heavy metal available and resistant content were extracted by sequential extraction. Heavy metals content in soil and plant extract was determined using Flame Atomic Absorption Spectrophotometer. The result showed that total content of heavy metals for Ni, Cr, Co, Mn and Fe was at 84.13 - 740.36 mg/kg, 23.51 - 135.53 mg/kg, 188.23 - 848.92 mg/kg, 245.00 - 545.33 mg/kg and 1176.77 - 1243.90 mg/kg, respectively. Bio-available heavy metals content in soil is at 0.09-6.32 mg/kg for Ni, 0-0.51 mg/kg for Co, 0 mg/kg for Cr, 7.78-21.07 mg/kg for Mn and 2.23-4.47 mg/kg for Fe. Based on BAC, Mn and Fe were detected to have a high concentration in plant parts compared to other heavy metals.
    Matched MeSH terms: Plant Extracts
  3. Kandungan logam berat dalam tumbuhan penyedap rasa terpilih dan dalam tanih ultrabes di felda Rokan barat, Negeri sembilan, Malaysia
    Sahibin Abd Rahim, Wan Mohd Razi Idris, Zulfahmi Ali Rahman, Tukimat Lihan, Ramilan Omar, Liew KY
    Sains Malaysiana, 2012;41:11-21.
    Kajian ini dijalankan di kawasan tanih ultrabes di Felda Rokan Barat (FRB), Negeri Sembilan. Sebanyak dua puluh sampel cili, kunyit, pandan dan serai serta substratnya telah diambil secara rawak untuk penentuan kandungan logam berat Fe, Cd, Co, Cu, Mn, Ni, Pb, Cr dan Zn. Kandungan logam berat dalam tumbuhan diekstrak secara penghadaman basah, manakala kandungan logam berat resistan dan tersedia dalam tanih diekstrak dengan kaedah pengekstrakan berjujukan. Kandungan logam berat jumlah diperoleh dengan menjumlahkan kandungan logam berat rintang dan tersedia. Kandungan logam berat di dalam larutan ekstrak tanih dan tumbuhan ditentukan dengan menggunakan Spektrofotometer Penyerapan Atom Nyalaan (FAAS). Hasil kajian menunjukkan logam Fe adalah dominan di dalam tanih di kawasan kajian manakala kepekatan logam Cd paling rendah dengan nilai < 10 mg/kg. Sela kepekatan logam-logam berat dalam tanih ialah Fe (2618.4 hingga 4248 mg/kg), Mn (240.9 hingga 741.9 mg/kg), Zn (81.9 hingga 324.8 mg/kg), Cr (46.8 hingga 438.7 mg/kg), Cu (15.7 hingga 81.7 mg/kg), Pb (14.9 hingga 116.8 mg/kg), Ni (10.1 hingga 545.6 mg/kg), Cd (5.6 hingga 10.6 mg/kg) dan Co (0.8 hingga 126.1 mg/kg). Nilai kepekatan Fe tersedia mencatatkan nilai tertinggi bagi semua substrat tumbuhan, diikuti oleh Mn, Zn, Pb, Ni, Cr, Cu, Co dan Cd. Berdasarkan peratusan tersedia Mn, Pb dan Zn merupakan logam berat yang paling banyak tersedia diambil oleh tumbuhan dengan nilai 8 hingga 10%. Kepekatan Fe, Mn, Ni dan Zn menunjukkan purata kepekatan yang tinggi pada bahagian tumbuhan yang dikaji berbanding dengan logam lain. Nilai koefisien penyerapan biologi (BAC) bagi cili, kunyit, pandan dan serai masing-masing dalam julat 0.02-0.36, 0.03-0.41, 0.03-0.63 dan 0.03-1.15. Boleh disimpulkan bahawa penyerapan logam berat oleh tumbuhan adalah normal walaupun kepekatan logam berat dalam tanih ultrabes adalah tinggi.
    Matched MeSH terms: Plant Extracts
  4. Kawasan tadahan utara Putrajaya, Malaysia-cabaran pengurusan kualiti air Putrajaya, Malaysia
    Mohd Zamri B. Daud, Pereira JJ, Mazlin B. Mokhtar
    Sains Malaysiana, 2011;40:1179-1186.
    Kawasan Pentadbiran Putrajaya merangkumi 70% daripada kawasan tadahan Tasik Putrajaya. Kerja-kerja pembangunan yang dijalankan di dalam kawasan Putrajaya kebiasaannya dapat dikawal dengan merujuk kepada peraturan-peraturan dan garis panduan yang telah disediakan oleh pihak Perbadanan Putrajaya dalam memastikan kualiti air Tasik dan Tanah Bencah Putrajaya sentiasa mematuhi piawaian yang telah ditetapkan. Seluas 30% daripada kawasan tadahan Tasik dan Tanah Bencah Putrajaya terletak di luar pentadbiran dan kawalan pihak berkuasa Putrajaya. Kawasan tadahan Utara Putrajaya adalah kawasan tadahan yang luas yang menyumbang sebahagian besar air yang memasuki kawasan Tasik dan Tanah Bencah Putrajaya. Berasal dari anak Sg. Chuau kini ia telah membentuk satu kawasan tasik dan tanah bencah tersebut. Data kualiti air yang dilakukan oleh pihak berkuasa Putrajaya iaitu Perbadanan Putrajaya dari tahun 2002 sehingga 2005 dianalisis bagi mengenalpasti masalah utama kualiti air dari kawasan Tadahan Utara Tanah Bencah Putrajaya. Data kualiti air yang dicatat sepanjang tahun 2002 mendapati purata peratusan parameter yang melebihi standard Putrajaya bagi ammoniakal nitrogen (NH3-N) ialah 43.7%, E. coli 31.3%, TSS 12.5% manakala DO dan COD masing-masing 6.2%. Untuk sepanjang tahun 2003, purata peratusan parameter bagi NH3-N ialah 23.7%, E. coli 18.4%, jumlah koliform 18.4%, TSS 2.6%, DO 13.2%, COD 13.2%, dan BOD 10.5%. Untuk sepanjang tahun 2004, purata peratusan parameter bagi NH3-N ialah 35.5%, E. coli 22.6%, jumlah koliform 12.9%, TSS 9.7%, COD 3.2%, dan BOD 16.1%. Untuk tahun 2005, purata peratusan parameter bagi E. coli 36.4%, NH3-N ialah 22.7%, jumlah koliform 18.2%, BOD 13.6%, DO 4.5%, dan COD juga 4.5%. Secara keseluruhan, analisis bagi tempoh empat tahun ini mendapati parameter NH3-N dan E. coli sering kali menunjuk bacaan yang tidak mematuhi Piawaian Putrajaya. Punca utama masalah kualiti air di kawasan Tadahan Utara Tanah Bencah Putrajaya adalah kegagalan mengurus kawasan tadahan secara bersepadu dan sikap pihak berkepentingan di kawasan kajian tidak mengurus dan mengawal secara menyeluruh masalah air larian, kawasan terbuka dan kelodakan ketika membangunkan kawasan.
    Matched MeSH terms: Plant Extracts
  5. Pengambilan logam berat oleh pokok daun kari (Murraya koenigi) dalam tanih ultrabes dari Felda Rokan Barat, Kuala Pilah, Negeri Sembilan, Malaysia
    Sahibin A, Wanmohd Razi I., Zulfahmi A, Tukimat L, Akjalaludin A, Azman H, et al.
    Sains Malaysiana, 2013;42:289-299.
    Kajian ini telah dijalankan di kawasan tanih ultrabes di Felda Rokan Barat, Kuala Pilah, Negeri Sembilan. Sebanyak lima belas sampel tumbuhan dan substratnya telah diambil dari kawasan kajian dengan kaedah berkelompok. Tujuan kajian ini adalah untuk menentukan kandungan logam berat Fe, Ni, Cr, Mn, Co, Zn, Cu, Cd dan Pb di dalam tanih dan bahagian akar, batang dan daun tumbuhan. Koefisien penyerapan biologi (BAC) ditentukan secara perkiraan. Kandungan logam berat di dalam tumbuhan diekstrak secara penghadaman basah manakala kandungan di dalam tanih diekstrak dengan kaedah pengekstrakan berjujukan. Kandungan logam berat di dalam larutan ekstrak tanih dan tumbuhan ditentukan menggunakan spektrofotometer penyerapan atom kaedah nyalaan (FAAS). Hasil kajian menunjukkan kepekatan logam berat paling tinggi dalam substrat pokok daun kari Murraya koenigi adalah Fe, diikuti oleh Mn, Cr, Co, Ni, Zn, Cu, Cd dan Pb dengan purata kepekatan masing-masing sebanyak 1699.64 mg/kg, 532.59 mg/kg, 212.43 mg/kg, 195.02 mg/kg, 174.97 mg/kg, 48.11 mg/kg, 43.86 mg/kg, 3.65 mg/kg dan 0.48 mg/kg. Kepekatan logam berat tersedia bagi Mn dan Pb
    adalah lebih tinggi berbanding logam berat tersedia yang lain berdasarkan peratus. Kandungan Fe dan Mn adalah tinggi di dalam semua bahagian tumbuhan. Walau bagaimanapun, berdasarkan nilai purata kumulatif BAC, hanya logam Pb menunjukkan nilai penimbunan yang agak tinggi dalam tumbuhan. Kajian ini menunjukkan pokok daun kari (Murraya koenigi) bukan tumbuhan penumpuk logam berat berdasarkan kepada nilai BACnya yang rendah.
    Matched MeSH terms: Plant Extracts
  6. Fulltext Preparation of Lignan-Rich Extract from the Aerial Parts of Phyllanthus niruri Using Nonconventional Methods
    Meselhy MR, Abdel-Sattar OE, El-Mekkawy S, El-Desoky AM, Mohamed SO, Mohsen SM, et al.
    Molecules, 2020 Mar 05;25(5).
    PMID: 32151037 DOI: 10.3390/molecules25051179
    Phyllanthin and related lignans were found to be responsible, at least in part, for most of the activity of Phyllanthus species. This observation encouraged the authors to develop methods for the preparation of an extract rich in phyllanthin and related lignans from the aerial parts of P. niruri L. Direct extraction with solvents produced extracts with variable yields and contents of lignans. Lignans were identified by LC-ESI-MS analysis as phyllanthin (used as marker substance), hypophyllanthin, phylltetralin, nirtetralin, and niranthin. Extraction with boiling water produced 18.10 g% (w/w) extract with a trace amount of lignans (phyllanthin content of 0.33 ± 0.10 mg/g extract), while extraction with MeOH gave 3.6 g% w/w extract with a low phyllanthin content (3.1 mg/g extract), as determined by HPLC. However, Soxhlet extraction with hexane, CH2Cl2, or acetone gave extracts with low yields (0.82, 1.12, and 3.40 g% w/w, respectively) and a higher phyllanthin contents (36.2 ± 2.6, 11.7 ± 1.68, and 11.7 ± 1.10 mg/g extract, respectively). Extraction quality and efficiency were optimized by adopting the following three different approaches: (1) Alkaline digestion of the plant material with 30% potassium hydroxide yielded 3.1 g% w/w of purified extract with high phyllanthin content (22.34 ± 0.13 mg/g); (2) microwave-assisted extraction using 80% MeOH gave an extract with a better yield (8.13 g% w/w) and phyllanthin content (21.2 ± 1.30 mg/g) (after filtration through a Diaion HP-20 column); and (3) treatment of the ground plant material at 50 °C with two hydrolytic enzymes, cellulase (9 U/g for 12 h) and then, protease (4 U/g up to 72 h) optimized the yield of extract (13.92 g% w/w) and phyllanthin content (25.9 mg/g extract and total lignans content of 85.87 mg/g extract). In conclusion, the nonconventional methods presented here are superior for optimizing the yield of extract and its lignan contents from the aerial parts of P. niruri.
    Matched MeSH terms: Plant Extracts/isolation & purification; Plant Extracts/pharmacology*; Plant Extracts/chemistry*
  7. The effect of alkaline treatment on the mechanical properties of treated sugar palm yarn fibre reinforced unsaturated polyester composites reinforced with different fibre loadings of sugar palm fibre
    Mohd Nurazzi Norizan, Khalina Abdan, Mohd Sapuan Salit, Rahmah Mohamed
    Sains Malaysiana, 2018;47:699-705.
    The aim of this paper was to describe the effects of treated sugar palm yarn fibre loading on the mechanical properties
    of reinforced unsaturated polyester composites. Composites with varying fibre loads (10, 20, 30, 40 and 50 wt. %) were
    prepared using a hand-layup process. The composites were tested for tensile, flexural and impact strength according to
    ASTM D3930, ASTM D790 and ASTM D256 standards, respectively. The results showed that an increase in fibre loading
    of up to 30 wt. % increased tensile strength (31.27 MPa), tensile modulus (4.83 GPa), flexural strength (58.14 MPa)
    and modulus (4.48 GPa). Maximum loading can be attained at 40 wt. % of fibre loading for impact strength (38 kJ/
    m2). The effectiveness of stress transfer mechanism through the fibre-matrix interaction, coupled with the optimization
    of fibre loading in resisting fracture and failure, boosts the overall mechanical performance of sugar palm composite.
    Matched MeSH terms: Plant Extracts
  8. Effects of aqueous plant extracts on the phagocytic capability and intracellular killing of Staphyococcus aureus by murine peritoneal macrophages in vitro
    Mahmood AA, Khiarul Anwar A, Ansary A, Sidik K, Salmah I, Suzainur KAR
    JUMMEC, 2001;6:30-33.
    Nine local plant species were picked randomly and their aqueous extracts have been screened to know their effects on the phagocytic capability and intracellular killing of StapllylococclIs al/rellS bacteria by mouse peritoneal macrophages. Macrophage cultures were incubated with different concentration of each plant extracts forI hour. Among these aqueous extracts, Ageratum conyzoides and Malastoma melabathricum inhibited the phagocytic capability and intracellular killing of Stapllylococclls aureus compared with controls. Elicited (activated) cells have more phagocytic capability and intracellular killing than the resident (normal) macrophages. There were no differences in the viability of cells between treated cells (with extracts) and controls (without extracts). KEYWORDS: Aqueous plant extracts, murine macrophage, phagocytosis.
    Matched MeSH terms: Plant Extracts
  9. Phytochemicals from Phyllanthus niruri Linn. and their pharmacological properties: a review
    Bagalkotkar G, Sagineedu SR, Saad MS, Stanslas J
    J Pharm Pharmacol, 2006 Dec;58(12):1559-70.
    PMID: 17331318
    This review discusses the medicinal plant Phyllanthus niruri Linn. (Euphorbiaceae), its wide variety of phytochemicals and their pharmacological properties. The active phytochemicals, flavonoids, alkaloids, terpenoids, lignans, polyphenols, tannins, coumarins and saponins, have been identified from various parts of P. niruri. Extracts of this herb have been proven to have therapeutic effects in many clinical studies. Some of the most intriguing therapeutic properties include anti-hepatotoxic, anti-lithic, anti-hypertensive, anti-HIV and anti-hepatitis B. Therefore, studies relating to chemical characteristics and structural properties of the bioactive phytochemicals found in P. niruri are very useful for further research on this plant as many of the phytochemicals have shown preclinical therapeutic efficacies for a wide range of human diseases, including HIV/AIDS and hepatitis B.
    Matched MeSH terms: Plant Extracts/pharmacology*; Plant Extracts/therapeutic use; Plant Extracts/chemistry*
  10. Safety evaluation of orally-administered methanol extract of Muntingia calabura Linn. leaves: A sub-chronic toxicity study in Sprague Dawley rats
    Nasir NLM, Kamsani NE, Mohtarrudin N, Tohid SFM, Zakaria ZA
    Pak J Pharm Sci, 2020 Sep;33(5):2009-2016.
    PMID: 33824108
    Muntingia calabura (M. calabura), locally known as "kerukup siam" or "buah ceri" belongs to the family Muntingiaceae and has been scientifically demonstrated to exert various pharmacological activities. The objectives of the current study are to evaluate the antioxidant activities and to determine the subchronic toxicity of 90 days orally-administered methanol extract of M. calabura (MEMC) in male Sprague Dawley rats. The rats were randomly divided into four groups (n=6). Vehicle control received 8% tween 80 and treatment group received 50, 250 and 500 mg/kg of MEMC orally administered daily for 90 days. Blood collection was carried out to obtain the hematological and biochemical profile of the rats. The organs harvested were subjected to histopathological analysis. For the antioxidant test, the extract was subjected to antioxidant study using the 2, 2-diphenyl-1-picrylhydrazyl (DPPH)- and superoxide anion-radical scavenging activity, total phenolic content (TPC) and phytochemical screening. Results obtained show that no adverse effects were observed during the experimental period. Hematological and biochemical analysis also showed no significant changes in this toxicity study. Besides, antioxidant analyses revealed that MEMC has higher DPPH- and SOD-radical scavenges activity as well as higher TPC value. In conclusion, M. calabura is safe for consumption and possesses beneficial antioxidant effect.
    Matched MeSH terms: Plant Extracts/administration & dosage; Plant Extracts/isolation & purification; Plant Extracts/toxicity*
  11. Zero waste multistage utilization of Ginkgo biloba branches
    Ma J, Ma NL, Zhang D, Wu N, Liu X, Meng L, et al.
    Chemosphere, 2022 Apr;292:133345.
    PMID: 34922964 DOI: 10.1016/j.chemosphere.2021.133345
    Zero waste multistage utilization of biomass from Ginkgo biloba branches (GBBs) was achieved through extraction of bioactive components, analysis of antioxidant and antibacterial activities, preparation and composition of pyrolyzate, adsorption and reuse of modified biochar. The results showed that GBBs had abundant bioactive components for potential application in the industry of food, chemical raw materials and biomedicine. Especially, the bioactive compounds in acetone extract (10 mg/mL) of GBBs identified by DPPH and ABTS had free radical scavenging abilities of 92.28% and 98.18%, respectively, which are equivalent to Vitamin C used as an antioxidant in food additives. Fourier Transform Infrared and X-Ray Diffraction analysis showed that carboxymethyl cellulose (CMC) and magnetic Fe3O4 were successfully incorporated into raw biochar (RB) to form CMC-Fe3O4-RB nanomaterial. Scanning electron microscopy and X-Ray Diffraction spectroscopy displayed Fe, C, and O existed on the surface of CMC-Fe3O4-RB. Compared with RB, CMC-Fe3O4-RB had a larger specific surface area, pore volume and pore size. Meanwhile, nanomagnetic CMC-Fe3O4-RB solved the problem of agglomeration in traditional magnetized biochar production, and improved the adsorption capacity of Pb2+, which was 29.90% higher than that of RB by ICP-OES. Further, the Pb2+ (10 mg/L) adsorption capacity of CMC-Fe3O4-RB reached the highest level in 2 h at the dosage of 0.01 g/L, and remained stable at 52.987 mg/g after five cycles of adsorption and desorption. This research aided in the creation of a strategy for GBBs zero waste multistage usage and a circular economic model for GBBs industry development, which can be promoted and applied to the fields of food industry and environment improvement.
    Matched MeSH terms: Plant Extracts
  12. Fulltext Plants derived therapeutic strategies targeting chronic respiratory diseases: Chemical and immunological perspective
    Prasher P, Sharma M, Mehta M, Paudel KR, Satija S, Chellappan DK, et al.
    Chem Biol Interact, 2020 Jul 01;325:109125.
    PMID: 32376238 DOI: 10.1016/j.cbi.2020.109125
    The apparent predicament of the representative chemotherapy for managing respiratory distress calls for an obligatory deliberation for identifying the pharmaceuticals that effectively counter the contemporary intricacies associated with target disease. Multiple, complex regulatory pathways manifest chronic pulmonary disorders, which require chemotherapeutics that produce composite inhibitory effect. The cost effective natural product based molecules hold a high fervor to meet the prospects posed by current respiratory-distress therapy by sparing the tedious drug design and development archetypes, present a robust standing for the possible replacement of the fading practice of poly-pharmacology, and ensure the subversion of a potential disease relapse. This study summarizes the experimental evidences on natural products moieties and their components that illustrates therapeutic efficacy on respiratory disorders.
    Matched MeSH terms: Plant Extracts/pharmacology*; Plant Extracts/therapeutic use; Plant Extracts/chemistry
  13. Raphanus sativus Seeds Oil Arrested in vivo Inflammation and Angiogenesis through Down-regulation of TNF-α
    Asif M, Yousaf HM, Saleem M, Hussain L, Mahrukh, Zarzour RA, et al.
    Curr Pharm Biotechnol, 2022;23(5):728-739.
    PMID: 34225619 DOI: 10.2174/1389201022666210702120956
    BACKGROUND: Raphanus sativus is traditionally used as an anti-inflammatory agent.

    OBJECTIVES: The current study was designed to explore the in vivo anti-inflammatory and antiangiogenic properties of Raphanus sativus seeds oil.

    METHODS: Cold press method was used for the extraction of oil (RsSO) and was characterised by using GC-MS techniques. Three in vitro antioxidant assays (DPPH, ABTS and FRAP) were performed to explore the antioxidant potential of RsSO. Disc diffusion methods were used to study in vitro antimicrobial properties. In vivo anti-inflammatory properties were studied in both acute and chronic inflammation models. In vivo chicken chorioallantoic membrane assay was performed to study antiangiogenic effects. Molecular mechanisms were identified using TNF-α ELISA kit and docking tools.

    RESULTS: GC-MS analysis of RsSO revealed the presence of hexadecanoic and octadecanoic acid. Findings of DPPH, ABTS, and FRAP models indicated relatively moderate radical scavenging properties of RsSO. Oil showed antimicrobial activity against a variety of bacterial and fungal strains tested. Data of inflammation models showed significant (p < 0.05) anti-inflammatory effects of RsSO in both acute and chronic models. 500 mg/kg RsSO halted inflammation development significantly better (p < 0.05) as compared with lower doses. Histopathological evaluations of paws showed minimal infiltration of inflammatory cells in RsSO-treated animals. Findings of TNF-α ELSIA and docking studies showed that RsSO has the potential to down-regulate the expression of TNF-α, iNOS, ROS, and NF-κB respectively. Moreover, RsSO showed in vivo antiangiogenic effects.

    CONCLUSION: Data of the current study highlight that Raphanus sativus seeds oil has anti-inflammatory, and antiangiogenic properties and can be used as an adjunct to standard NSAIDs therapy which may reduce the dose and related side effects.

    Matched MeSH terms: Plant Extracts
  14. Biologically active ibogan and vallesamine derivatives from Tabernaemontana divaricata
    Kam TS, Pang HS, Choo YM, Komiyama K
    Chem Biodivers, 2004 Apr;1(4):646-56.
    PMID: 17191876
    Six new indole alkaloids, viz., (3S)-3-cyanocoronaridine (2), (3S)-3-cyanoisovoacangine (3), conolobine A (5), conolobine B (6), conolidine (7), and (3R/3S)-3-ethoxyvoacangine (8), in addition to 36 known ones, were obtained from the stem-bark extract of the Malayan Tabernaemontana divaricata. The structures were determined by NMR and MS analysis. The CN-substituted alkaloids showed appreciable cytotoxicity towards the KB human oral epidermoid carcinoma cell-line.
    Matched MeSH terms: Plant Extracts/isolation & purification; Plant Extracts/toxicity; Plant Extracts/chemistry
  15. Fulltext Thermodynamic stability, in-vitro permeability, and in-silico molecular modeling of the optimal Elaeis guineensis leaves extract water-in-oil nanoemulsion
    Romes NB, Abdul Wahab R, Abdul Hamid M, Oyewusi HA, Huda N, Kobun R
    Sci Rep, 2021 10 21;11(1):20851.
    PMID: 34675286 DOI: 10.1038/s41598-021-00409-0
    Nanoemulsion is a delivery system used to enhance bioavailability of plant-based compounds across the stratum corneum. Elaeis guineensis leaves are rich source of polyphenolic antioxidants, viz. gallic acid and catechin. The optimal E. guineensis leaves extract water-in-oil nanoemulsion was stable against coalescence, but it was under significant influence of Ostwald ripening over 90 days at 25 °C. The in-vitro permeability revealed a controlled and sustained release of the total phenolic compounds (TPC) of EgLE with a cumulative amount of 1935.0 ± 45.7 µgcm-2 after 8 h. The steady-state flux and permeation coefficient values were 241.9 ± 5.7 µgcm-2 h-1 and 1.15 ± 0.03 cm.h-1, respectively. The kinetic release mechanism for TPC of EgLE was best described by the Korsmeyer-Peppas model due to the highest linearity of R2 = 0.9961, indicating super case II transport mechanism. The in-silico molecular modelling predicted that the aquaporin-3 protein in the stratum corneum bonded preferably to catechin over gallic acid through hydrogen bonds due to the lowest binding energies of - 57.514 kcal/mol and - 8.553 kcal/mol, respectively. Thus, the in-silico study further verified that catechin could improve skin hydration. Therefore, the optimal nanoemulsion could be used topically as moisturizer to enhance skin hydration based on the in-silico prediction.
    Matched MeSH terms: Plant Extracts/administration & dosage; Plant Extracts/pharmacokinetics; Plant Extracts/chemistry*
  16. Efficacy and Safety of Ginkgo biloba in Patients with Acute Ischemic Stroke: A Systematic Review and Meta-Analysis
    Chong PZ, Ng HY, Tai JT, Lee SWH
    Am J Chin Med, 2020;48(3):513-534.
    PMID: 32349519 DOI: 10.1142/S0192415X20500263
    Ginkgo biloba and its extract have been suggested to have a neuroprotective role in patients with acute ischemic stroke. We aimed to examine the efficacy and safety of Ginkgo biloba use in patients with acute ischemic stroke. We searched seven databases for randomized controlled studies examining the use of Ginkgo biloba in patients with acute ischemic stroke. Relevant studies were retrieved, screened, and data were extracted independently by two reviewers. Random effects meta-analyses were performed to evaluate the efficacy and safety outcomes of Ginkgo biloba. We subsequently assessed the certainty of evidence using the GRADE (Grading of Recommendation Assessment, Development and Evaluation) methodology. We found 12 randomized controlled studies enrolling 1466 patients. Pooled results suggest that Ginkgo biloba use was associated with an improvement in neurological function among individuals with AIS with a reduction of 2.87 points on the National Institute of Health Stroke Scale score (95% CI:
    -
    4
    .
    0
    1
    -
    -
    1
    .
    7
    4
    ,
    p
    <
    0
    .
    0
    0
    1
    ). Ginkgo biloba use was also associated with an improvement in activities of daily living and functional outcome (Mean Difference: 9.52; 4.66-14.33,
    p
    <
    0
    .
    0
    0
    1
    ). Subgroup analysis suggest that the impact was larger when using an injectable formulation of Ginkgo biloba compared to the oral formulation. There was no apparent impact of Ginkgo biloba use on all-cause mortality (Risk ratio (RR): 1.21; 0.29-5.09,
    p
    =
    0
    .
    8
    0
    ) or cerebrovascular bleeding (RR: 0.82; 0.43-1.57,
    p
    =
    0
    .
    5
    5
    ). There was limited evidence on to support the use of gingko biloba in terms of improving quality of life and other stroke events. As such, more studies are needed before it can be recommended for routine use in improving neurological and cognitive function in patients with acute ischemic stroke.
    Matched MeSH terms: Plant Extracts/administration & dosage; Plant Extracts/pharmacology; Plant Extracts/therapeutic use*
  17. Fulltext Subcritical Water Technology for Extraction of Phenolic Compounds from Chlorella sp. Microalgae and Assessment on Its Antioxidant Activity
    Zakaria SM, Kamal SMM, Harun MR, Omar R, Siajam SI
    Molecules, 2017 Jul 03;22(7).
    PMID: 28671617 DOI: 10.3390/molecules22071105
    Chlorella sp. microalgae is a potential source of antioxidants and natural bioactive compounds used in the food and pharmaceutical industries. In this study, a subcritical water (SW) technology was applied to determine the phenolic content and antioxidant activity of Chlorella sp. This study focused on maximizing the recovery of Chlorella sp. phenolic content and antioxidant activity measured by 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay as a function of extraction temperature (100-250 °C), time (5-20 min) and microalgae concentration (5-20 wt. %) using response surface methodology. The optimal operating conditions for the extraction process were found to be 5 min at 163 °C with 20 wt. % microalgae concentration, which resulted in products with 58.73 mg gallic acid equivalent (GAE)/g phenolic content and 68.5% inhibition of the DPPH radical. Under optimized conditions, the experimental values were in close agreement with values predicted by the model. The phenolic content was highly correlated (R² = 0.935) with the antioxidant capacity. Results indicated that extraction by SW technology was effective and that Chlorella sp. could be a useful source of natural antioxidants.
    Matched MeSH terms: Plant Extracts/isolation & purification; Plant Extracts/pharmacology; Plant Extracts/chemistry*
  18. Microalgal extract as bio-coating to enhance biofilm growth of marine microalgae on microporous membranes
    Tong CY, Chua MX, Tan WH, Derek CJC
    Chemosphere, 2023 Feb;315:137712.
    PMID: 36592830 DOI: 10.1016/j.chemosphere.2022.137712
    Microalgal biofilm is a popular platform for algal production, nutrient removal and carbon capture; however, it suffers from significant biofilm exfoliation under shear force exposure. Hence, a biologically-safe coating made up of algal extracellular polymeric substances (EPS) was utilized to secure the biofilm cell retention and cell loading on commercial microporous membrane (polyvinylidene fluoride), making the surfaces more hydrophobic (contact angle increase up to 12°). Results demonstrated that initial cell adhesion of three marine microalgae (Amphora coffeaeformis, Cylindrotheca fusiformis and Navicula incerta) was enhanced by at least 1.3 times higher than that of pristine control within only seven days with minimized biofilm exfoliation issue due to uniform distribution of sticky transparent exopolymer particles. Bounded extracellular polysaccharide gathered was approximately 23% higher on EPS-coated membranes to improve the biofilm's hydraulic resistance, whereas bounded extracellular protein would only be substantially elevated after the attached cells re-accommodate themselves onto the EPS pre-coating of themselves. In accounting the rises of hydrophobic protein content, biofilm was believed to be more stabilized, presumably via hydrophobic interactions. EPS biocoating would generate a groundswell of interest for bioprocess intensifications though there are lots of inherent technical and molecular challenges to be further investigated in future.
    Matched MeSH terms: Plant Extracts
  19. Foodomics Reveals Anti-Obesity Properties of Cannabinoids from Hemp Oil
    Ding Z, Jiang F, Shi J, Wang Y, He M, Tan CP, et al.
    Mol Nutr Food Res, 2023 Jan;67(2):e2200508.
    PMID: 36382382 DOI: 10.1002/mnfr.202200508
    SCOPE: Molecular networking (MN) analysis intends to provide chemical insight of untargeted mass spectrometry (MS) data to the user's underlying biological questions. Foodomics is the study of chemical compounds in food using advanced omics methods. In this study, an MS-MN-based foodomics approach is developed to investigate the composition and anti-obesity activity of cannabinoids in hemp oil.

    METHODS AND RESULTS: A total of 16 cannabinoids are determined in optimized microwave pretreatment of hemp oil using the developed approach. Untargeted metabolomics analysis reveals that cannabinoid extract (CE) and its major constituent (cannabidiol, CBD), can alleviate high glucose-induced increases in lipids and carbohydrates, and decreases in amino acid and nucleic acid. Moreover, CE and CBD are also found to suppress the expression levels of mdt-15, sbp-1, fat-5, fat-6, fat-7, daf-2, and elevate the expression level of daf-1, daf-7, daf-16, sod-3, gst-4, lipl-4, resulting in the decrease of lipid synthesis and the enhance of kinetism. Canonical correspondence analysis (CCA) uncovers strong associations between specific metabolic alterations and gene expression levels.

    CONCLUSION: These findings from this exploratory study offer a new insight into the roles of cannabinoids in the treatment of obesity and related complications.

    Matched MeSH terms: Plant Extracts
  20. Fulltext Influence of particle size in supercritical carbon dioxide extraction of roselle (Hibiscus sabdariffa) on bioactive compound recovery, extraction rate, diffusivity, and solubility
    Putra NR, Rizkiyah DN, Aziz AHA, Mamat H, Jusoh WMSW, Idham Z, et al.
    Sci Rep, 2023 Jul 05;13(1):10871.
    PMID: 37407592 DOI: 10.1038/s41598-023-32181-8
    The purpose of this work was to establish the best particle size for recovering high yields of total phenolic compounds (TPC), total anthocyanin compounds(TAC) and total flavonoid compounds (TFC) from roselle (Hibiscus sabdariffa) by applying supercritical carbon dioxide (ScCO2). The extraction rate, diffusivity and solubility of yield in ScCO2 were also studied and calculated utilizing models. Pressure (10 and 30 MPa), temperature (40 and 60 °C), and particle size (250 µm 
    Matched MeSH terms: Plant Extracts
Related Terms
Filters
Contact Us

Please provide feedback to Administrator ([email protected])

External Links