Preliminary Screening of Antioxidant and Antibacterial Activities and Establishment of an Efficient Callus Induction inCurculigo latifoliaDryand (Lemba)

Leaf, seed, and tuber explants ofC. latifoliawere inoculated on MS medium supplemented with various concentrations of BAP and IBA, alone or in combinations, to achievein vitroplant regeneration. Subsequently, antioxidant and antibacterial activities were determined fromin vitroandin vivoplant developed. No response was observed from seed culture on MS media with various concentrations of PGRs. The highest percentage of callus was observed on tuber explants (94%) and leaf explants (89%) when cultured on MS media supplemented with IBA in combination with BAP. A maximum of 88% shoots per tuber explant, with a mean number of shoots (8.8±1.0), were obtained on MS medium supplemented with combinations of BAP and IBA (2.5 mg L−1). The best root induction (92%) and mean number (7.6±0.5) from tuber explants were recorded on 2.5 mg L−1IBA alone supplemented to MS medium. The higher antioxidant content (80%) was observed fromin vivotuber. However, tuber part from the intact plant showed higher inhibition zone in antibacterial activity compared to otherin vitroandin vivotested parts.

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Newly Developed Topical Cefotaxime Sodium Hydrogels: Antibacterial Activity andIn VivoEvaluation

BioMed Research International ◽

10.1155/2016/6525163 ◽

2016 ◽

Vol 2016 ◽

pp. 1-15 ◽

Cited By ~ 8

Author(s):

Azza S. Zakaria ◽

Samar A. Afifi ◽

Kadria A. Elkhodairy

Keyword(s):

Antibacterial Activity ◽

Guar Gum ◽

Hydroxypropyl Methylcellulose ◽

Inhibition Zone ◽

Antibacterial Activities ◽

Stability Study ◽

Drug Content ◽

Noticeable Reduction

In an attempt to reach better treatment of skin infections, gel formulations containing Cefotaxime (CTX) were prepared. The gel was formulated using Carbopol 934 (C934), Hydroxypropyl Methylcellulose 4000 (HPMC 4000), Carboxymethylcellulose Sodium (Na CMC), Pectin (PEC), Xanthan Gum (XG), or Guar Gum (GG). Thirteen different formulas were prepared and characterized physically in terms of color, syneresis, spreadability, pH, drug content, and rheological properties. Drug-excipients compatibility studies were confirmed by FTIR and thenin vitrodrug release study was conducted.In vitroandin vivoantibacterial activities of CTX were studied against wound pathogens such as,Staphylococcus aureus(S. aureus),Escherichia coli(E. coli), andPseudomonas aeruginosa(P. aeruginosa), using either pure drug or Fucidin® cream as control. F13 provides better spreadability compared to F1 (XG) or F11 (HPMC). Moreover, the release of the drug from hydrogel F13 containing C934 was slower and sustained for 8 h. Stability study revealed that, upon storage, there were no significant changes in pH, drug content, and viscosity of the gels. Also, F13 showed the larger inhibition zone and highest antibacterial activity among other formulations. Histological analysis demonstrated that after single treatment with F13 gel formulation, a noticeable reduction in microbial bioburden occurred in case of both Gram positive and Gram negative bacterial isolates.

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In vitro regeneration protocol of Rauvolfia serpentina L.

Bangladesh Journal of Scientific and Industrial Research ◽

10.3329/bjsir.v53i2.36674 ◽

2018 ◽

Vol 53 (2) ◽

pp. 133-138 ◽

Cited By ~ 1

Author(s):

S Khan ◽

TA Banu ◽

S Akter ◽

B Goswami ◽

M Islam ◽

...

Keyword(s):

In Vitro Regeneration ◽

Leaf Explants ◽

Multiple Shoot ◽

Nodal Segments ◽

Root Induction ◽

Ms Medium ◽

Regeneration System ◽

Rauvolfia Serpentina ◽

Number Of Shoots

An efficient in vitro regeneration system was developed for Rauvolfia serpentina L. through direct and indirect organogenesis from nodal and leaf explants. Among the different growth regulators, MS medium supplemented with 2.0 mg/l BAP, 0.5mg/l IAA and 0.02mg/l NAA found best for the multiple shoot formation from nodal segments. In this combination 98% explants produced multiple shoots and the average number of shoots per explants is 13∙4. The frequency of callus induction and multiple shoot induction from leaves was highest 88% in MS medium supplemented with 2.0 mg/l BAP, where mean number of shoots/explants was 12.5. The highest frequency of root induction (80%) and mean number of roots/plantlets (10) were obtained on half strength of MS medium containing 0.2 mg/l IBA. The rooted plantlets were transferred for hardening following acclimatization and finally were successfully established in the field.Bangladesh J. Sci. Ind. Res.53(2), 133-138, 2018

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Honokiol and Magnolol Production by in vitro Micropropagated Plants of Magnolia dealbata, an Endangered Endemic Mexican Species

Natural Product Communications ◽

10.1177/1934578x1000500213 ◽

2010 ◽

Vol 5 (2) ◽

pp. 1934578X1000500 ◽

Cited By ~ 4

Author(s):

Fabiola Domínguez ◽

Marco Chávez ◽

María Luisa Garduño-Ramírez ◽

Víctor M. Chávez-Avila ◽

Martín Mata ◽

...

Keyword(s):

Growth Medium ◽

Leaf Explants ◽

Wild Plants ◽

Root Induction ◽

Ms Medium ◽

Plant Materials ◽

Detection Techniques ◽

Magnolia Dealbata ◽

Selection Of

An efficient protocol for the in vitro propagation of Magnolia dealbata Zucc., an important medicinal plant that is the source of the anxiolytic and anticancer compounds honokiol and magnolol, was established. This plant is wild-crafted, and conservationists have expressed concerns with regard to the sustainability of production. In the present work, two factors were found to be of importance for the regeneration of M. dealbata and the production of honokiol and magnolol. These factors were the type of explants and the combination and concentration of plant-growth regulators. Green, compact, nodular organogenic callus was obtained from leaf explants in a medium fortified with Murashige and Skoog salts and supplemented with 1.5 mg/L 2,4-dicholorophenoxyacetic acid and 1.5 mg/L kinetin. Shoot multiplication from callus cultures was achieved in the Murashige and Skoog (MS) medium with 1.5 mg/L thidiazuron (TDZ). Phenol secretion was controlled by the addition of 250 mg/L of activated charcoal. For rooting, shoots were transferred to MS medium supplemented with several auxins. After root induction, the plants were hardened in earthen pots containing sand, soil, and vermiculite. The contents of honokiol (HK) and magnolol (MG) were determined in different plant materials by high-performance liquid chromatography-diode-array detection techniques. This analysis revealed that the honokiol and magnolol content in aerial and underground parts of micropropagated M. dealbata were higher than that observed in wild plants (both 6 months old). Our results suggest that conservation of M. dealbata is possible by means of in vitro multiplication of leaf-derived callus. The usefulness of M. dealbata regeneration and production of HK and MG may be attributed to the proper selection of explant sourcing and identification of the correct growth medium to support adequate growth. This careful selection of explants and growth medium leads to a very useful source of plant material for pharmacological and phytomedicinal screening applications and, above all, would safeguard this plant species from the threat of extinction.

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Haploid plantlet regeneration through anther culture in oilseed Brassica species

Bangladesh Journal of Agricultural Research ◽

10.3329/bjar.v34i4.5844 ◽

1970 ◽

Vol 34 (4) ◽

pp. 693-703 ◽

Cited By ~ 4

Author(s):

MA Alam ◽

MA Haque ◽

MR Hossain ◽

SC Sarker ◽

R Afroz

Keyword(s):

Plant Regeneration ◽

Anther Culture ◽

Growth Regulators ◽

Callus Induction ◽

Brassica Species ◽

Plantlet Regeneration ◽

Root Induction ◽

Ms Medium ◽

Half Strength

Anther of five varieties of Brassica species, namely BARI Shariaha-7, Tori-7, Agrani, Daulat and Safal were cultured in vitro to observe their regeneration potentiality. Different concentrations and combinations of growth regulators were supplemented in MS medium. The range of callus induction was 12.50-87.50 %. Maximum callus induction (75.00%) was observed on MS +4 mg/L 2, 4-D + 1.0 mg/L BAP. Among the genotypes, BARI Sharisha-7 showed the highest percentage of callus induction (60.42%). Among the treatments, highest percentage of shoot regeneration (75.00%) was observed on MS + 4 mg/L BAP + 1.0 mg/L NAA. BARI Sharisha-7 also showed the highest rate of plant regeneration (66.67%). Root induction was highest (75%) on half strength MS medium supplemented with 1.0 mg/L IBA and 0.5 mg/L NAA. The plantlets with sufficient roots thus obtained were transferred successfully to plastic pots and subsequently to the field. BARI Sharisha-7 and Tori-7 survived easily in the pots as well as in the field but Safal was very poor in survivability both in the pots and in the field. Key Words: Brassica; haploid; anther culture; in vitro regeneration.DOI: 10.3329/bjar.v34i4.5844Bangladesh J. Agril. Res. 34(4) : 693-703, December 2009

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In vitro culture of pointed gourd (Trichosanthes dioica Roxb.)

Bangladesh Journal of Agricultural Research ◽

10.3329/bjar.v35i1.5874 ◽

1970 ◽

Vol 35 (1) ◽

pp. 135-142 ◽

Cited By ~ 2

Author(s):

MA Malek ◽

D Khanam ◽

M Khatun ◽

MH Molla ◽

MA Mannan

Keyword(s):

Plant Regeneration ◽

In Vitro Culture ◽

Culture Media ◽

Culture Conditions ◽

Root Induction ◽

Ms Medium ◽

Trichosanthes Dioica ◽

Pointed Gourd ◽

Regenerated Plantlets

An experiment was conducted to study the in vitro culture of pointed gourd. Cotyledon rescued from physiologically matured seeds (PMS) and immatured seeds (IMS) of pointed gourd were used as explants. Cotyledon excised from PMS responded very well in all culture conditions. Plant regenerated from cotyledon of PMS ranged from 38 to 96% in different hormonal formulations of culture media. Highest percentage of shoot regeneration was observed in MS + 1.0 mg/l BAP and lowest in MS + 2.5 mg/l BAP. No plant regeneration was observed in cotyledon from immatured seeds. The highest percentage of root induction (99%) was achieved in half MS medium supplemented with 0.5 mg/l NAA. The regenerated plantlets were successfully established in earthen pot. Keywords: Cotyledon; in vitro; pointed gourd. DOI: 10.3329/bjar.v35i1.5874Bangladesh J. Agril. Res. 35(1) : 135-142, March 2010

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Antibacterial Activity of Buah Merah (Pandanus conoideus Lam.) Against Bacterial Oral Pathogen of Streptococcus sanguinis ATCC10556, Streptococcus mutans ATCC 25175, and Enterococcus faecalis ATCC 29212: An in Vitro Study

The Open Dentistry Journal ◽

10.2174/18742106020140113 ◽

2020 ◽

Vol 14 (1) ◽

pp. 113-119 ◽

Cited By ~ 1

Author(s):

Lisda Damayanti ◽

Ida Ayu Evaangelina ◽

Avi Laviana ◽

Yetty Herdiyati ◽

Dikdik Kurnia

Keyword(s):

Antibacterial Activity ◽

Ethyl Acetate ◽

Methanol Extract ◽

Synergistic Effects ◽

In Vitro Study ◽

Inhibition Zone ◽

Oral Bacteria ◽

Inhibition Zones

Background: Caries and periodontitis are dental diseases caused by bacteria of S. sanguinis, S. mutans, and E. faecalis with three main etiological factors of the host, substrate, and time. Objective: This study proposed to investigate the antibacterial effects of Buah Merah (Pandanus conoideus Lam.) against oral bacteria of E.faecalis, S. mutans, and S. sanguinis. Materials and Methods: The Buah Merah was extracted with different solvents to yield n-hexane, ethyl acetate, methanol, and H2O extracts. The concentrations of single and mixture extracts were adjusted for antibacterial assay against bacteria of E. faecalis, S. mutans, and S. sanguinis strains through agar well diffusion assay with chlorhexidine, fosfomycin, and quercetin used as positive controls. Results: The ethyl acetate extract showed highest antibacterial activity against three oral bacterial of E. faecalis, S. mutans, and S. sanguinis with inhibition zones values of 9.3, 12.3, and 17.9 mm at 40%, respectively, together with their MIC and MBC values of 1250 & 2500, 0.312 & 0.625, and 0.312 & 0.625 ppm, respectively. For the formulation of extracts, combinations samples test gave various effects to different bacteria, with the best activity showed by methanol-ethyl acetate (M-Ea) extracts against S. mutans with an inhibition zone of 16.25 mm at 40 ppm. The strong and synergistic effect of methanol extract against S. mutans was supported by inhibition zones of the formulation of methanol extract-fosfomycin which showed an inhibition zone of 25.9 mm at 10 ppm. Conclusion: The extracts of Buah Merah demonstrated antibacterial activity against oral bacteria of E. faecalis, S. mutans, and S. sanguinis and gave important information for further in vivo clinical studies to determine the exact dosages and its effectiveness in practical application. These results prove the antimicrobial effects of Buah Merah extracts as alternative natural drugs with synergistic effects of active constituents.

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IN VITRO ANTIBACTERIAL ACTIVITY OF ETHANOLIC EXTRACT OF SEEDPOD AND QUERCETIN OF NELUMBO NUCIFERA GAERTN

Asian Journal of Pharmaceutical and Clinical Research ◽

10.22159/ajpcr.2019.v12i1.28915 ◽

2019 ◽

Vol 12 (1) ◽

pp. 164

Author(s):

Ruvanthika Pn ◽

Manikandan S

Keyword(s):

Antibacterial Activity ◽

Ethanolic Extract ◽

Antibacterial Activities ◽

Nelumbo Nucifera ◽

Diffusion Method ◽

Dependent Manner ◽

E Coli ◽

In Vitro Antibacterial Activity

Objective: The objective of the study was to evaluate whether ethanolic extracts of Nelumbo nucifera (EENN) seedpod and quercetin (active component of NN) possess antibacterial proprieties against Gram (-) bacteria such as Escherichia coli and Pseudomonas aeruginosa and Gram (+) bacteria such as Staphylococcus aureus. Methods: Antibacterial activities of EENN seedpod and quercetin were investigated using disc diffusion method, minimum inhibitory concentration against E. coli and P. aeruginosa and Gram (+) bacteria such as S. aureus. Results: The antibacterial activity of both EENN seedpod and quercetin was found to be increased in dose-dependent manner. The maximum zone of inhibition was exhibited by both EENN seedpod and quercetin against E. coli (14 mm and 15 mm) and P. aeruginosa (13 mm and 15 mm). Gram-negative bacteria were more susceptible to the EENN seedpod extract and quercetin than Gram-positive bacteria.Conclusion: The results of the present study suggested that the effect of EENN seedpod and quercetin against the tested bacteria in vitro may contribute to the in vivo activities of the EENN seedpod and quercetin.

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Design, Synthesis, and Biological Activity of Novel Myricetin Derivatives Containing Amide, Thioether, and 1,3,4-Thiadiazole Moieties

Molecules ◽

10.3390/molecules23123132 ◽

2018 ◽

Vol 23 (12) ◽

pp. 3132 ◽

Cited By ~ 5

Author(s):

Xianghui Ruan ◽

Cheng Zhang ◽

Shichun Jiang ◽

Tao Guo ◽

Rongjiao Xia ◽

...

Keyword(s):

Antibacterial Activity ◽

Pathogenic Bacteria ◽

Antibacterial Activities ◽

Xanthomonas Oryzae ◽

Design Synthesis ◽

Antiviral Activities ◽

Potential Alternative ◽

Better Than

A series of myricetin derivatives containing amide, thioether, and 1,3,4-thiadiazole moieties were designed and synthesized, and their antiviral and antibacterial activities were assessed. The bioassays showed that all the title compounds exhibited potent in vitro antibacterial activities against Xanthomonas citri (Xac), Ralstonia solanacearum (Rs), and Xanthomonas oryzae pv. Oryzae (Xoo). In particular, the compounds 5a, 5f, 5g, 5h, 5i, and 5l, with EC50 values of 11.5–27.3 μg/mL, showed potent antibacterial activity against Xac that was better than the commercial bactericides Bismerthiazol (34.7 μg/mL) and Thiodiazole copper (41.1% μg/mL). Moreover, the in vivo antiviral activities against tobacco mosaic virus (TMV) of the target compounds were also tested. Among these compounds, the curative, protection, and inactivation activities of 5g were 49.9, 52.9, and 73.3%, respectively, which were better than that of the commercial antiviral Ribavirin (40.6, 51.1, and 71.1%, respectively). This study demonstrates that myricetin derivatives bearing amide, thioether, and 1,3,4-thiadiazole moieties can serve as potential alternative templates for the development of novel, highly efficient inhibitors against plant pathogenic bacteria and viruses.

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In Vitro and In Vivo Antibacterial Activities of TAK-083, an Agent for Treatment of Helicobacter pyloriInfection

Antimicrobial Agents and Chemotherapy ◽

10.1128/aac.45.9.2455-2459.2001 ◽

2001 ◽

Vol 45 (9) ◽

pp. 2455-2459 ◽

Cited By ~ 44

Author(s):

Tsuneo Kanamaru ◽

Yoshitaka Nakano ◽

Yukio Toyoda ◽

Ken-Ichiro Miyagawa ◽

Mayumi Tada ◽

...

Keyword(s):

Antibacterial Activity ◽

Anaerobic Bacteria ◽

Antibacterial Activities ◽

Mongolian Gerbils ◽

Growth Inhibitory ◽

Growth Inhibitory Activity ◽

H Pylori ◽

Aerobic And Anaerobic

ABSTRACT The antibacterial activity of TAK-083 was tested against 54 clinical isolates of Helicobacter pylori and was compared with those of amoxicillin, clarithromycin, and metronidazole. The growth-inhibitory activity of TAK-083 was more potent than that of amoxicillin, clarithromycin, or metronidazole (the MICs at which 90% of the strains are inhibited were 0.031, 0.125, 64, and 8 μg/ml, respectively). The antibacterial activity of TAK-083 was highly selective against H. pylori; there was a >30-fold difference between the concentration of TAK-083 required to inhibit the growth of H. pylori and that required to inhibit the growth of common aerobic and anaerobic bacteria. Exposure ofH. pylori strains to TAK-083 at the MIC or at a greater concentration resulted in an extensive loss of viability. When four H. pylori strains were successively subcultured in the medium containing subinhibitory concentrations of TAK-083, no significant change in the MICs of this compound was observed. TAK-083 strongly inhibited the formation of tryptophanyl-tRNA in H. pylori while exhibiting little effect on the same system in eukaryotes. TAK-083 was efficacious in the treatment of gastric infection caused by H. pylori in Mongolian gerbils. The results presented here indicate that TAK-083 is a promising candidate for the treatment of H. pylori infection.

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Effects of strontium ions with potential antibacterial activity on in vivo bone regeneration

10.21203/rs.3.rs-18054/v2 ◽

2020 ◽

Author(s):

Nafiseh Baheiraei ◽

Hossein Eyni ◽

Bita bakhshi ◽

Raziyeh Najafloo

Keyword(s):

Antibacterial Activity ◽

Bone Formation ◽

Bone Regeneration ◽

Bone Repair ◽

Early Stage ◽

Antibacterial Activities ◽

Calvarial Bone ◽

Alizarin Red

Abstract Background: Bioactive glasses (BGs) have attracted added attention in the structure of the scaffolds for bone repair applications. Different metal ions could be doped in BGs to induce specific biological responses. Among these ions, strontium (Sr) is considered as an effective and safe doping element with promising effects on bone formation and regeneration.Methods: In this experiment, we evaluated the antibacterial activities of the gelatin-BG (Gel-BG) and Gel-BG/Sr scaffolds in vitro. The osteogenic properties of the prepared scaffolds were also assessed in rabbit calvarial bone defects for 12 weeks. Alizarin Red, Hematoxylin & Eosin (H&E) and Masson’s Trichrome staining were performed to assess bone regeneration and the obtained results were compared with those without Sr. Also, histomorphometric data were obtained to evaluate the new bone, residual graft, and connective tissue.Results: Both scaffolds showed in vivo bone formation during 12 weeks with the newly formed bone area in Gel-BG/Sr scaffold was higher than that in Gel-BG scaffolds after the whole period. Based on the histological results, Gel-BG/Sr exhibited acceleration of early-stage bone formation in vivo. The results of antibacterial investigation showed that although both Gel-BG/Sr and Gel-BG effectively inhibited the growth of Escherichia coli (E. coli) but, only Gel-BG/Sr structure could lead to a 3 log reduction in Staphylococcus aureus (S. aureus). Conclusions: Our results confirmed that Sr doped BG is a favorable candidate for bone tissue engineering with superior antibacterial activity and bone regeneration capacity compared with similar counterparts having no Sr ion.

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