scholarly journals Antibacterial Effect of Juglans Regia Bark against Oral Pathologic Bacteria

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Faramarz Zakavi ◽  
Leila Golpasand Hagh ◽  
Arash Daraeighadikolaei ◽  
Ahmad Farajzadeh Sheikh ◽  
Arsham Daraeighadikolaei ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Aqueous Extract ◽  
Antibacterial Effect ◽  
Juglans Regia ◽  
Ethanolic Extract ◽  
Negative Control ◽  
Oral Bacteria ◽  
Disk Diffusion ◽  
Resistant Bacteria ◽  
Aqueous Extracts

Background. In this study antimicrobial effect of ethanolic and aqueous extracts of Juglans regia bark in Iran was evaluated on four different oral bacteria,Streptococcus mutans,Streptococcus salivarius,Streptococcus sanguis, andStaphylococcus aureus.Methods. Aqueous and ethanol extracts of Juglans regia bark were prepared by using disk diffusion technique and Minimal Inhibitory Concentration (MIC) methods. Tetracycline 30 μg and Erythromycin 15 μg were used as positive control and water as negative control in disk diffusion and MIC methods. Data were analyzed by ANOVA test.Results. The results showed thatS. sanguisandS. mutanswere the most sensitive and the most resistant bacteria against ethanolic and aqueous extracts, respectively. Ethanolic extract had significant antibacterial effect against all tested bacteria. Aqueous extract did not show antibacterial effect onS. mutans, in contrast to ethanolic extract. Aqueous extract had significantly antibacterial effect againstStaphylococcus aureus,S. salivarius, andS. sanguiscompared to control (P<0.0001), but it did not show effect onS. mutanswhen compared with Erythromycin. According to the obtained MIC values, ethanol extract of Juglans regia bark had the lowest rate.Conclusion. The results may provide the basis for using natural antimicrobial substance for oral hygiene prophylaxis purposes.

scholarly journals THE EFFECT OF PSEUDOCEDRELA KOTSCHYI (SCHWEINF.) HARMS EXTRACTS AGAINST STAPHYLOCOCCUS AUREUS GROWTH

2021 ◽  
Vol 4 (1) ◽  
pp. 11-15
Author(s):  
Kokou Atchou ◽  
Koku Amegbo Dakey ◽  
Farida Etroubeka-Tsono ◽  
Amégninou Agban ◽  
Simplice Damintoti Karou ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Aqueous Extract ◽  
Ethanolic Extract ◽  
Clinical Strain ◽  
Aqueous Extracts ◽  
Phytochemical Screening ◽  
Bactericidal Effects ◽  
Kinetics Of ◽  
Kinetics Of Inhibition

Staphylococcus aureus is a ubiquitous bacteria that causes a serious health problem because of its multi-resistance to antibiotics. The aimed of this study was to evaluate the antibacterial activity of P. kotschyi root against S. aureus ATCC 29213 and S. aureus, a clinical strain. The phytochemical compound was sought in the extracts by standard staining tests and extractions were carried out by fractionation using solvents depletion method with increasing polarity. The method of dilution in liquid medium was used for the antibacterial tests. The results showed that the aqueous extract of the bark was effective against both S. aureus with MICs of 0.39 mg.mL-1. The MICs of ethanolic extract were 0.39 and 0.78 mg.mL-1, respectively on S. aureus ATCC 29213 and S. aureus. The steles of P. kotschyi roots were less effective. The ethanolic and aqueous extracts at concentrations = 2MICs, have been respectively bacteriostatic and bactericidal effects on tested germs. The kinetics of inhibition showed that the aqueous extract of the bark at 0.78 mg.mL-1, completely destroyed the two germs respectively in 4 h and 5 h. The action of ethanolic extract at 0.78 and 1.56 mg.mL-1 occurs late against both S. aureus at 6 h and 7 h. Phytochemical screening revealed the presence of alkaloids, tannins, flavonoids, anthracenes, glycosides, saponosides and sterols, some of that may be responsible for the observed antimicrobial activity. This study proved the antibacterial activity of P. kotschyi roots that can be exploited as an antibiotic in the treatment of S. aureus infections.

scholarly journals Antibacterial effect of nettle (Urtica dioica)

2014 ◽  
Vol 13 (1) ◽  
pp. 1 ◽  
Author(s):  
N.A. Salih
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Effect ◽  
Ethanolic Extract ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Resistant Bacteria ◽  
Salmonella Spp ◽  
Gram Positive Bacteria ◽  
Ethanol Extracts ◽  
Klebsiella Spp

The antibacterial activity of aqueous and 95% ethanol extracts of nettle leaf was tested against some Gram-negative and Gram-positive bacteria isolated from hospitalized patients by the agar well diffusion method. Staphylococcus aureus, Escherichia coli, Klebsiella spp., Bacillus Subtillus, Proteus spp. Salmonella spp. and Pseudomonas spp. were used. The results indicate that both extracts showed different antibacterial activities which were in favor of ethanolic extract because of more solubility of active ingredient in ethanol than in water. Staphylococcus aureus, Bacillus Subtillus, and Salmonella spp. showed the highest susceptibility to nettle extracts antibacterial effect, while E coli, Pseudomonas and Proteus were less susceptible. The only clear resistant bacteria isolate was Klebsiella spp.

scholarly journals Effect of aqueous Extract of Terminalia bellirica fruit pulp on Alcohol affected learning in swiss albino mice

2021 ◽  
Vol 6 (2) ◽  
pp. 76-78
Author(s):  
Sowmya ◽  
Manohar VR ◽  
Mohandas Rai ◽  
H N Gopalakrishna ◽  
Chandrashekar R
Keyword(s):  
Aqueous Extract ◽  
Protective Action ◽  
Negative Control ◽  
Control Group ◽  
Acute Administration ◽  
Aqueous Extracts ◽  
Swiss Albino Mice ◽  
Alcohol Administration ◽  
Group I ◽  
Albino Mice

To evaluate the effect of Aqueous extract of Terminalia belliricafruit pulp (AETB) on learning by Hebb William maze model in mice with acute alcohol consumption.Swiss albino mice (n=48) of either sex weighing 20-30g will be divided into eight groups of six mice each. Drugs were given orally after 12 hours of fasting. Group I mice received 10ml/kg of Normal Saline, Group II mice received Piracetam 200mg/kg, Group III received AETB 36mg/kg, Group IV received ethanol 1.5g/kg orally, Group V received ethanol(1.5g/kg )+ piracetam (200mg/kg), Group VI mice received ethanol(1.5g/kg) +AETB(9mg/kg), Group VII mice received ethanol(1.5g/kg) +AETB (18mg/kg), Group VIII mice received ethanol(1.5g/kg) +AETB(36mg/kg). Time taken by the animal to reach the reward chamber from the start chamber (TRC) in Hebb-William maze was used as a parameterto evaluate the learning.Acute alcohol administration showed increase in TRC. Whereas, acute administration of Aqueous extracts of Terminalia belliricafruit pulp showed a decrease in TRC when compared to the control group. The TRC values for the groups that were administered AETB along with acute alcohol administration showed decrease in TRC values compared to the negative control.Current study showed acute alcohol administration caused impairment of thelearning ability in mice. Whereas, acute administration of Aqueous extracts of Terminalia belliricafruit pulp (AETB)caused enhancement of learning. Pre-treatment with AETB before acute alcohol administration indicated protective action of AETB on alcohol affected learning in mice.

scholarly journals Effectiveness of Ethanolic Extract of Aloe Vera Leaves against Staphylococcus aureus

2020 ◽  
Vol 3 (2) ◽  
pp. 36-40
Author(s):  
Viki Ayu Intan Permatasari ◽  
Mutia Hariani Nurjanah ◽  
Wimbuh Tri Widodo
Keyword(s):  
Staphylococcus Aureus ◽  
Aloe Vera ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Average Diameter ◽  
Positive Control ◽  
Negative Control ◽  
Traditional Medicines ◽  
Alternative Ingredients ◽  
High Concentrations

Since long ago Indonesia used nutritious plants as traditional medicines. Various types of plants in Indonesia can be used as alternative ingredients, one of which is aloe vera. Aloe vera contains saponin and anthraquinone, so aloe vera leaves function as antiseptic and antibacteria. Staphylococcus aureus is a gram-positive coccus bacteria. This bacterium is often found as a normal germ flora in humans. Staphylococcus aureus can cause infections in humans and animals. This study aims to determine the effect of ethanolic extract of Aloe vera leaves in inhibiting Staphylococcus aureus by using maceration extract method. The concentrations used were 20%, 40%, 60%, 80% and 100% with positive control (Erytromycin) and negative control (aquades). The inhibitory zone analysis is done using the table method. Test of ethanol extract of Aloe vera leaves in inhibiting Staphylococcus aureus produced inhibition zones at concentrations of 60%, 80% and 100% with average diameter of 6.94 mm, 6.22 mm and 9.5 mm. The conclusion of this research is the ethanolic extract of Aloe vera leaves can inhibit Staphylococcus aureus in high concentrations

scholarly journals The Pathogenicity and Transcriptome Analysis of Methicillin-Resistant Staphylococcus aureus in Response to Water Extract of Galla chinensis

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Shizhou Wu ◽  
Yunjie Liu ◽  
Hui Zhang ◽  
Lei Lei
Keyword(s):  
Staphylococcus Aureus ◽  
Carbohydrate Metabolism ◽  
Aqueous Extract ◽  
Transcriptome Analysis ◽  
Biofilm Formation ◽  
Laser Scanning Microscopy ◽  
Aqueous Extracts ◽  
Invasive Ability ◽  
Methicillin Resistant

Aim. Antibiotic abuse contributes to the emergence of methicillin-resistant Staphylococcus aureus (MRSA). It is increasingly important to screen new antimicrobial agents for the management of MRSA infections. G. chinensis, a nontoxic Chinese herbal medicine, is considered a potential antibacterial agent. The aim of this study was to investigate the bactericidal effects of the aqueous extracts of G. chinensis on MRSA. The potential mechanisms of G. chinensis aqueous extract inhibition of the pathogenicity of MRSA in vivo are also discussed. Methods. G. chinensis aqueous extract was prepared and its antimicrobial activities were examined by determining its minimum inhibitory concentration (MIC). Biofilm biomass was determined by scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM). RNA sequencing (RNA-seq) was used to evaluate differentially expressed functional pathways in MRSA treated with G. chinensis aqueous extract. We validated the role of G. chinensis aqueous extract in the invasive ability and pathogenicity of MRSA in vivo using a rat infectious model. Results. The results indicated that MRSA was sensitive to the G. chinensis aqueous extracts at concentration of 31.25μg/mL. G. chinensis extract led to a reduction in dextran-dependent aggregation and biofilm formation in MRSA. Based on the transcriptome analysis, G. chinensis aqueous extracts significantly downregulated the gene expression related to biofilm formation and carbohydrate metabolism. G. chinensis aqueous extract inhibited the invasive ability and the pathogenicity of MRSA in vivo. Conclusion. The antimicrobial properties of G. chinensis aqueous extract are likely related to its modulation of MRSA biofilm formation and carbohydrate metabolism. G. chinensis aqueous extract is a promising supplementary therapy to lessen or eliminate the use of antibiotics and is a potential tool for the management of MRSA infections.

scholarly journals ESTIMATION THE ANTIBACTERIAL EFFECT OF CURCUMIN AND ROSEMARY AMONG PATIENTS WITH DENTAL CARIES IN VITRO

2019 ◽  
pp. 277-279
Author(s):  
EHAN ABDULHADI AL-SHARIFI ◽  
ASIA ABED AL-MAHMOOD ◽  
SUMAYAH AL-MAHMOOD
Keyword(s):  
Dental Caries ◽  
Aqueous Extract ◽  
Antibacterial Agents ◽  
Bacterial Culture ◽  
Antibacterial Effect ◽  
Anaerobic Bacteria ◽  
Oral Bacteria ◽  
Mannitol Salt Agar ◽  
Inhibition Zones

Objective: The aim is to estimate the effect of curcumin and rosemary as antibacterial agents among dental caries cases. Methods: Samples of saliva were randomly collected from 40 patients in Al-Furat General Hospital who attended the hospital from July to September 2018. Swabs were cultured on blood agar at 37°C for 24 h and then subcultured in mannitol salt agar and trypticase soy broth at 37°C for 24 h. Different concentrations of aqueous extract curcumin solution (0.1, 0.3, 0.5, and 1 mg/ml) and rosemary solution (1 g/ml) were prepared and added to the bacterial culture. Later, minimum inhibition zones of the bacterial cultures were determined. Results: The results showed that there were 25 cases of Streptococcus mutans, 10 cases of Staphylococcus aureus, 3 cases of anaerobic bacteria, and 2 cases of normal flora among 40 culturing swabs of bacteria. Aqueous extract of curcumin showed antibacterial effect with concentrations (0.1, 0.3, 0.5, and 1 mg/ml) against oral bacteria; nevertheless, these bacteria were resistant to the aqueous extract of rosemary with concentration 1 g/ml. Conclusion: It can be concluded that curcumin can be an effective antibacterial agent against dental caries disease and its effect increases positively in relation to its concentration. On the other hand, rosemary with 1 g/ml concentration did not show any effect on oral bacteria.

scholarly journals A Simple Assay to Screen Antimicrobial Compounds Potentiating the Activity of Current Antibiotics

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Junaid Iqbal ◽  
Ruqaiyyah Siddiqui ◽  
Shahana Urooj Kazmi ◽  
Naveed Ahmed Khan
Keyword(s):  
Aqueous Extract ◽  
Bacterial Infections ◽  
Juglans Regia ◽  
Tree Bark ◽  
Resistant Bacteria ◽  
Multiple Drug ◽  
Drug Resistant ◽  
Antimicrobial Compounds ◽  
Drug Resistant Bacteria ◽  
Multiple Drug Resistant

Antibiotic resistance continues to pose a significant problem in the management of bacterial infections, despite advances in antimicrobial chemotherapy and supportive care. Here, we suggest a simple, inexpensive, and easy-to-perform assay to screen antimicrobial compounds from natural products or synthetic chemical libraries for their potential to work in tandem with the available antibiotics against multiple drug-resistant bacteria. The aqueous extract ofJuglans regiatree bark was tested against representative multiple drug-resistant bacteria in the aforementioned assay to determine whether it potentiates the activity of selected antibiotics. The aqueous extract ofJ. regiabark was added to Mueller-Hinton agar, followed by a lawn of multiple drug-resistant bacteria,Salmonella typhior enteropathogenicE. coli. Next, filter paper discs impregnated with different classes of antibiotics were placed on the agar surface. Bacteria incubated with extract or antibiotics alone were used as controls. The results showed a significant increase (>30%) in the zone of inhibition around the aztreonam, cefuroxime, and ampicillin discs compared with bacteria incubated with the antibiotics/extract alone. In conclusion, our assay is able to detect either synergistic or additive action ofJ. regiaextract against multiple drug-resistant bacteria when tested with a range of antibiotics.

scholarly journals Anti-diabetic activity of rhizome extracts of Imperata cylindrical against alloxan-induced Diabetes Mellitus in rats

2020 ◽  
Vol 11 (SPL4) ◽  
pp. 2704-2709
Author(s):  
Ranjana Kohli ◽  
Madan L Kaushik ◽  
Jai Parkash Kadian ◽  
Bhupendra Chauhan
Keyword(s):  
Body Weight ◽  
Glucose Level ◽  
Aqueous Extract ◽  
Ethanolic Extract ◽  
Treated Group ◽  
The Body ◽  
Control Group ◽  
Appreciable Effect ◽  
Aqueous Extracts ◽  
Study Results

The anti-diabetic effect of ethanolic and aqueous extracts of Imperata cylindrical  rhizomes was investigated in alloxan-induced diabeties in rats. Diabetes was induced by a single 150 mg/kg intraperitoneal dose of alloxan. Rats were divided into five groups with six rats in each group i.e. the normal control group, diabetic control group, standard group (glibenclamide, 10mg/kg, p.o.), Test-I group (200 mg/kg ethanolic extract) and Test-II group (200 mg/kg aqueous extract). The above concerned groups were inoculated on 21st day. On the last day of the experiment, fasted rats were killed by cervical dislocation. The body weight was measured at the initial day and final day. The blood samples were collected for estimation of glucose. The loss of body weight in control group, but recovery was observed in drug treated group. The serum glucose level was significant increased in diabetic rats. However, significant improvement was observed in treated group. The biochemical parameters such as HDL and proteins level were decreased in the control group but maintained in drug treated group. LDL, cholesterol, triglyceride creatinine and urea were significant increase in control group however, reduced level in drug treated group. The present study concluded that ethanolic and aqueous extracts of I. cylindrical  rhizome showed an appreciable effect in reducing the hyperglycemia and the complications associated with diabetes. However, aqueous extract is found more significant in decreasing blood glucose level in comparison to the ethanolic extract. The study results justify the traditional use of the plant as anti-diabetic.

scholarly journals Pengaruh Antibakteri Ekstrak Kulit Batang Matoa (Pometia pinnata) terhadap Bakteri Staphylococcus aureus secara In vitro

Jurnal MIPA ◽  
2013 ◽  
Vol 2 (2) ◽  
pp. 128 ◽  
Author(s):  
Mercy Ngajow ◽  
Jemmy Abidjulu ◽  
Vanda S. Kamu
Keyword(s):  
Staphylococcus Aureus ◽  
Secondary Metabolites ◽  
Antibacterial Effect ◽  
Inhibition Zone ◽  
Stem Bark ◽  
Positive Control ◽  
Negative Control ◽  
Bark Extract ◽  
Distilled Water

Telah dilakukan penelitian secara kualitatif terhadap pengaruh antibakteri dari ekstrak kulit batang matoa (Pometia pinnata. Spp.) terhadap bakteri Gram positif Staphylococcus aureus . Sebelum dilakukan uji antibakteri, sampel yang telah diekstrak secara maserasi diuji fitokimia terlebih dahulu untuk menentukan kandungan metabolit sekunder yang telah diketahui berperan sebagai agen antibakteri. Setelah dilakukan uji fitokimia, ekstrak diuji aktivitas antibakterinya terhadap bakteri Staphylococcus aureus dengan menggunakan teknik difusi agar dengan cara sumuran. Ekstrak dilarutkan pada aquades steril dengan perbandingan 2 g ekstrak pada 2 mL air. Untuk kontrol positif, digunakan ciprofloxacin dan aquades steril sebagai kontrol negatif. Hasil penelitian ini menunjukkan bahwa ekstrak kulit batang matoa memiliki aktivitas antibakteri setelah diinkubasi selama 24 jam pada 37 OC. Dari 3 kali pengulangan dengan masing – masing 3 sumuran, didapat zona hambat masing – masing 16.84 mm, 12.5 mm dan 14.5 mm dengan kontrol positif 29.67 mm serta kontrol negatif 0 mm. Hasil yang diperoleh didukung oleh keberadaan metabolit sekunder hasil uji fitokimia yaitu tanin, flavonoid, terpenoid dan saponin.A qualitative study has done  of the antibacterial effect of matoa (Pometia pinnata) stem bark extract against Gram-positive bacteria Staphylococcus aureus . Before the antibacterial test , samples were extracted by maceration and then  phytochemical  tested to measuring the content of secondary metabolites  that have been known to act as an antibacterial agent . After being tested of phytochemical , extracts were tested the antibacterial effect  against Staphylococcus aureus using agar diffusion technique. Extract was dissolved in sterile distilled water with a ratio of 2 g of extract in 2 mL of water . For the positive control , use of ciprofloxacin and sterile distilled water as a negative control . Results of this study indicate that matoa bark extract has antibacterial effect after incubation for 24 h at 37OC . Of 3 times with each repetition - each 3 wells, the inhibition zone obtained - each 16.84 mm , 12.5 mm and 14.5 mm with 29.67 mm of positive control and a negative control by 0 mm . The results are supported by the presence of secondary metabolites by phytochemical test such as tannins , flavonoids , terpenoids and saponins.

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