Phytochemical composition and In-vitro activity of ethanolic extract of Eucalyptus globulus leaves against multidrug resistant poultry pathogens.

Aim of the present study was to determine the In-vitro antibacterial activity of ethanolic extract of E. globulus leaves against common multidrug resistant poultry pathogens. Phytochemical analysis through HPLC revealed that kaempeferol (7.315min) followed by querecetin (6.655min) and myrecetin (3.655min). Percent area of kaempeferol (6826.88%) was highest, followed by myrecetin (5516.22%) and querecetin (163.748%). Phytochemical investigation of ethanolic extract of E. globulus leaves through GCMS showed highest retention time (min) α-pinene (20.43) and α-terpineol (20.15) accompanied by spathulenol (11.97), piperitone (11.04). The ethanolic extracts of E. globulus leaves showed a highest zone of inhibition against S. pullorum SP6; 20.64± 2.08, E. coli SE 12; 19.75± 2.83, C. perfringens type A (CPM38-01); 19.46± 2.02. The highest level of MIC of E. globulus noted were against S. gallinarum S22; 133.37±53.294, S. gallinarum S1; 130.20±45.10, S. gallinarum S4; 129.47±24.182, S. gallinarum S3; 126.83±72.392. In conclusion, the study confirmed that the ethanolic extract of E. globulus is composed of active ingredients having antibacterial activity and can be referred as an alternate to antibiotics.

Activity of ethanolic extract of Eucalyptus globulus leaves against multi drug resistant poultry pathogens in broiler chicks.

The present study was designed to evaluate the antimicrobial activity of E. globulus leaves in broiler chicks. Total (n=255) day-old chicks were segregated into five groups i.e. Pathogenic E. coli, S. pullorum, S. gallinarum and C. perfringens type A and control negative group. Each bacterial challenged (1x 107 CFU) group was divided into control positive, antibiotic, probiotic and E. globulus group. Experimental birds were exposed to E. coli, S. pullorum, S. gallinarum and C. perfringens type A at different ages. At 35th day of experiment the log reduction for each group was determined. The highest log reduction in E. coli and C. perfringens Type A colonies count were found in E. globulus (3.26) (2.33) treated group followed by antibiotic (2.85) (1.59) and probiotic (2.84) (1.50) respectively. The log reduction in S. pullorum colonies count was highest in E. globulus (2.50) followed by probiotic (2.24) and antibiotic (2.16). The S. gallinarum colonies count log reduction was found highest for antibiotic (2.84) followed by probiotic (2.48) and E. globulus group. The results of in-vivo experiment revealed that ethanolic extract of E. globulus has antibacterial activity and it can be used as a replacement to low level of antibiotics added in poultry feed.

Appraisal of anti-mycobacterial potential against MDR-MTB in pediatric patients, cytotoxicity and mutagenicity of Aloe vera and Allium sativum.

The purpose of the studies was to evaluate an in-vitro anti-mycobacterial activity of Aloe vera and Allium sativum against MDR-MTB, their cytotoxicity and mutagenicity. Four extracts of Aloe vera and Allium sativum were prepared by Soxhlet apparatus and their minimum inhibitory concentrations (MIC's) were determined by BACTEC MGIT960 system against multi drug resistant Mycobacterium tuberculosis (MDR-MTB) isolates, collected from pediatric patients. Fractions of Aloe vera and Allium sativum extracts were separated using glass column chromatography, followed by evaluation of cytotoxicity and mutagenicity by tetrazolium salt (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and Ames test, respectively. Out of four extracts, ethanol extracts of Aloe vera and Allium sativum exhibited activity at MIC 5mg/mL to 7mg/mL and 3mg/mL to 5mg/mL, respectively and IC50 by MTT assay for combination of all fractions were 278.3mcg/100µL and 270.8mcg/100µL and in Ames assay M.I of TA98 were 0.14 and 0.07 and M.I of TA100 were 1.14 and 0.44, respectively. Aloe vera and Allium sativum extracts showed anti-mycobacterial activity against MDR-MTB isolates so, MIC of ethanol extracts of each plant and fractions of column chromatography had been checked. The MTT and Ames tests depicted that ethanol extracts of Aloe vera and Allium sativum were non-cytotoxic and non-mutagenic, and can be used in treatment of patients suffering from MDR-MTB.

Antiviral, embryo toxic and cytotoxic activities of Astragalus membranaceus root extracts.

Antiviral activity of Astragalus membranaceus aqueous and methanol root extracts was determined against Avian influenza H9 virus. Toxicity profile of extracts was evaluated using chicken embryos and BHK-21 cell line. Different concentrations (400, 200, 100, 50, 25. 12.5, 6.25 and 3.12µg/mL) of both aqueous and methanol extracts were mixed with standard virus inoculum (4HAunits) and incubated for 30minutes at 37°C prior to inject the chicken embryos. Chorioallantoic fluid harvested 72 hours post inoculation and evaluated for virus growth using hemagglutination assay. Same concentrations of both extracts without virus were injected in chicken embryos to evaluate embryo toxic activity as well. The cytotoxic activity of aqueous and methanol extracts was determined by MTT colorimetric assay using BHK-21 cells. Three concentrations (400, 200 and 100µg/mL) of aqueous and five concentrations (400, 200, 100, 50 and 25µg/mL) of methanol extract showed antiviral activity. None of the tested concentrations of aqueous and methanol A. membranaceus root extracts caused chicken embryo mortality. Cell survival percentage of aqueous extract was higher than 50 at all of the tested concentrations except 400µg/mL. Two concentrations (400 and 200µg/mL) of methanol extract showed cytotoxicity. It was concluded that aqueous and methanol roots extracts of A. membranaceus have antiviral activity and concentrations which were safe may be used for treatment of Avian influenza H9 virus infections.

White Sesame Seed Oil Mitigates Blood Glucose Level, Reduces Oxidative Stress, and Improves Biomarkers of Hepatic and Renal Function in Participants with Type 2 Diabetes Mellitus.

OBJECTIVES: The study was designed to investigate the impact of white sesame seed oil (WSSO) consumption on fasting blood glucose (GLU), insulin (INS), glycosylated hemoglobin (HbA1c), and hepatic antioxidant enzymes. A secondary aim was to check the influence on serum biochemistry, hepatic, cardiac, and renal functions. METHODS: Forty-six participants with type 2 diabetes were recruited and randomly divided into two equal groups: diabetic control (DCON) and diabetic sesame oil (DSO). At baseline and 30, 60, and 90 days, blood samples were drawn and analyzed. Two-way repeated-measures analysis of variance was used to evaluate the difference between groups and across time. RESULTS: In both groups, GLU, INS, and HbA1c were not significantly different at baseline (mean 187.07 ± 5.63 mg/dl, mean 12.12 ± 1.03 µU/ml, and mean 7.55 ± 0.37%, respectively). At 90 days, GLU was significantly (p < 0.05) decreased in DSO (137.83 ± 3.16 mg/dl) when compared with DCON (218.13 ± 5.92 mg/dl), while INS was significantly increased in DSO (23.13 ± 1.15 µU/ml) as compared to DCON (7.93 ± 0.38 µU/ml). At 90 days, HbA1c was significantly lower (p < 0.05) in DSO as compared to DCON. Thiobarbituric acid reactive substances were significantly lower (p < 0.05) in DSO (1.08 ± 0.05 [MDA] nmol/ml) as compared to DCON (2.26 ± 0.07 [MDA] nmol/ml). In DSO, activities of hepatic antioxidant enzymes (superoxide dismutase, catalase, and glutathione peroxidase) increased while in DCON these activities decreased significantly (p < 0.05) across the time period. Biomarkers of liver, cardiac, and renal functions improved significantly in DSO as compared to DCON. CONCLUSION: WSSO as a functional food may play an important role in GLU regulation and against deleterious effects of diabetes in humans with type 2 diabetes.

Development and evaluation of vaccine against Staphylococcus aureus recovered from naturally occurring mastitis in she-camels.

The predominant Staphylococcus aureus (S. aureus), an etiological agent of camel mastitis is becoming drug resistant that invites prevention and control strategies. Vaccine production would have a valuable impact on public health. Therefore, in present study, inactivated vaccine with different adjuvants was prepared and evaluated against S. aureus. The vaccinal isolate recovered from camel subclinical mastitis was coagulase positive (PCR based), having expressed pseudocapsule, holding alpha-beta hemolysin characteristics, and multiple drug resistant. Inactivated alum precipitated S. aureus vaccine (APSV) and oil adjuvant S. aureus vaccine (OASV) were prepared after confirming its antigenicity in rabbits. Three groups of rabbits were randomly inoculated with APSV, OASV, and placebo (Unvaccinated, UV). Each group was further divided into two groups based on single and booster dose inoculation. Booster dose of vaccines in rabbits at day 15th of primary inoculation was given. Serum samples were taken on 15, 30, 45 and 60 days of primary inoculation from all rabbits. Analysis of variance was applied to compare geometric mean titer (GMT) of three groups, while t-test was applied to estimate the difference between single and booster dose response. The study found 1010 CFU/mL S. aureus as standard bacterial load for vaccines with higher and sustained antigenicity. The vaccines were safe from morbidity and mortality, and proved effective and stable for 7 and 4 months at 25 °C and 37 °C, respectively. The OASV produced significantly (p < 0.05) higher immune response followed by APSV throughout trial. The highest GMT by APSV and OASV vaccines with single dose inoculation was 37.92 and 69.92 at day 45th post primary inoculation, respectively. Similarly, 59.20 and 142.40 GMTs were noted with booster dose in case of APSV and OASV, respectively. The booster dose presented significantly (p < 0.05) higher GMT than that of single dose inoculation of vaccines. The study concluded APSV and OASV safe, effective, and stable with significant immunogenic results in experimental rabbits.

Anti-avian influenza virus H9N2 activity of aqueous extracts of Zingiber officinalis (Ginger) and Allium sativum (Garlic) in chick embryos.

In the present study, anti-Avian influenza virus H9N2 activity of aqueous extracts (5, 10, 15, 20, 25%) of Zingiber officinalis and Allium sativum was evaluated. Embryo-toxicity was evaluated by histopathological scoring of Chorio-allantoic membrane of chick embryos. Cytotoxicity of extracts was determined by MTT assay on Vero cells. Aqueous extract of ginger had antiviral activity at 10, 15, 20 and 25% while garlic had activity at 15, 20 and 25%. Histopathological scoring of chorio-allantoic membrane for aqueous extracts (5, 10, 15, 20, 25%) of ginger (0.66±0.57, 1.33±0.57, 1.66±0.57, 2.66±0.57, 3.66±0.57, respectively) and garlic (1.00±0.00, 1.33±0.57, 2.00±0.00, 2.33±0.57, 3.66±0.57, respectively) was concentration dependant. MTT assay revealed cytotoxicity of both plants was also concentration dependent. Extracts of ginger (5, 10, 15, 20, 25%) had lower cytotoxicity (71, 59, 28, 22, 0 % cell survival, respectively) as compared to garlic (61, 36. 20, 11, 3% cell survival, respectively). Overall results revealed that concentration of aqueous extract of ginger (10%), showing antiviral activity against H9N2, was less toxic to vero cells (> 50% cell survival). It is insinuated that ginger may have anti- Avian influenza virus H9N2 potential and its active compounds needs further investigations.

Nutraceutical, Anti-Inflammatory, and Immune Modulatory Effects of ß-Glucan Isolated from Yeast.

ß-Glucan is a dietary fibre, found in many natural sources, and controls chronic metabolic diseases effectively. However, ß-glucan from the yeast has rarely been investigated. Objectively, conditions were optimized to isolate ß-glucan from the yeast (max. 66% yield); those optimized conditions included 1.0 M NaOH, pH 7.0, and 90°C. The purity and identity of the isolated ß-glucan were characterized through FT-IR, SEM, DSC, and physicofunctional properties. The obtained results from DSC revealed highly stable ß-glucan (m.p., 125°C) with antioxidant activity (TAC value 0.240 ± 0.0021 µg/mg, H2O2 scavenging 38%), which has promising bile acid binding 40.463% and glucose control (in vitro). In line with these results, we evaluated the in vivo anti-inflammatory potential, that is, myeloperoxidase activity and reduction in MDA and NO; protective effect on proteins and keeping viscosity within normal range exhibited improvement. Also, the in vivo cholesterol binding and reduction in the skin thickness by ß-glucan were highly encouraging. Finally, our results confirmed that yeast ß-glucan is effective against some of the inflammatory and oxidative stress markers studied in this investigation. In general, the effect of 4% ß-glucan was more noticeable versus 2% ß-glucan. Therefore, our results support the utilization of ß-glucan as a novel, economically cheap, and functional food ingredient.

Evaluation of White Sesame Seed Oil on Glucose Control and Biomarkers of Hepatic, Cardiac, and Renal Functions in Male Sprague-Dawley Rats with Chemically Induced Diabetes.

White sesame seed oil (WSSO) has been used in cooking and food preparations for centuries. It has many purported health benefits and may be a promising nutraceutical. The primary purpose of this study was to examine the effects of WSSO on fasting blood glucose (GLU) and insulin (INS) in male Sprague-Dawley rats with chemically induced diabetes. A secondary aim was to explore other hematological biomarkers of hepatic, cardiac, and renal function. Sixty-three male Sprague-Dawley rats were randomized into standard diet groups, normal control (NCON) (n = 21) and diabetic control (DCON) (n = 21), and a diabetic sesame oil (DSO) (n = 21) group, which were fed a diet containing 12% WSSO. Blood samples were analyzed at 0, 30, and 60 days. Differences between groups and across days were assessed with two-way repeated measures analysis of variance. At baseline, GLU and INS were similar in both diabetic groups, mean 248.4 ± 2.8 mg/dL and mean 23.4 ± 0.4 µU/mL, respectively. At 60 days, GLU was significantly (P < .05) higher in DCON (298.0 ± 2.3 mg/dL) compared with DSO (202.1 ± 1.0 mg/dL). INS showed similar favorable trends after WSSO supplementation. Consumption of WSSO significantly improved glucose control and other biomarkers of hepatic stress, as well as cardiac and renal health. WSSO may be a viable functional food to help reduce the detrimental effects of diabetes.