In Vitro Propagation of Eggplant through Meristem Culture

Meristem culture was done for developing an efficient protocol of production of eggplant clones. Shoot tips of 30-35 days old field grown eggplants were used for meristem isolation. Three cultivars viz. ‘Islampuri’, ‘Khatkhatia’ and ‘Katabegun’ were used in the present investigation as explants source. Surface sterilization of shoot tips was found to be the best in 0.1% HgCl2 solution for 3 minutes. For primary establishment of isolated apical meristem in MS liquid medium containing 2.0 mg l-1 BAP was found the best in cv Islampuri. BAP was also proved to be best for the primary establishment of isolated apical meristem in all the cultivars. Subsequent development of meristem derived shoot was achieved in MS semisolid medium containing either 2.0 mg l-1 BAP and 1.0 mg l-1 NAA or 1.0 mg l-1 BAP. For root development from meristem derived shoots, 1.0 mg l-1 IBA was found most responsive in cv. ‘Islampuri’ and ‘Khatkhatia’. Aft er transplantation, the in vitro plants showed normal growth

Fabrication of PLA-PEG Nanoparticles as Delivery Systems for Improved Stability and Controlled Release of Catechin

The purpose of this study was to develop an oral delivery system for the controlled release of catechin and evaluate the antioxidant potential and stability of catechin loaded PLA/PEG nanoparticles (CATNP). Nanoparticles were synthesized using a double emulsion solvent evaporation method. The fabricated nanoparticles were relatively small with a hydrodynamic diameter of 300 nm and an encapsulation efficiency of 95%. SEM image analysis showed uniform sized and spherically shaped nanoparticles. In vitro release profiles indicated a slow and sustained release of catechin from the nanoparticle. Stability of the nanoparticle in simulated gastric and intestinal fluids is maintained due to the PEG coating on the nanoparticles, which effectively protected catechin against gastrointestinal enzyme activity. Enhanced inhibition action of free radicals and metal chelation potential was noted when catechin was encapsulated in these polymeric nanoparticles. The reports obtained from this study would provide an opportunity for designing an oral delivery system aimed at inhibiting oxidative stress in the human body

Disposition kinetics of sparfloxacin under different pathological condition in Black Bengal goat following single intravenous administration

Clinically healthy 9 black Bengal female goats (1–1.5 year age) weighing between 9–12 kg were divided into 3 equal groups. Group 1 served as control and the animals of group 2 and 3 were considered to be experimental. In experiment no. 1 sparfloxacin was administered intravenously to the goats of group 1 and disposition kinetics and protein binding studies were conducted in plasma. Liver of each goat of group 2 and 3 were damaged by subcutaneous administration of carbontetrachloride and considered as experiment no.2. Sparfloxacin was administered intravenously to group 2 for disposition kinetics and protein binding study. In experiment no.3 rejuvenation of liver of animals of group 2 were done by oral administration of a commercial medicine for consecutive 21 days period. Animals of group 3 were considered as untreated control for the commercial medicine. The results of icterus index, bromosulphophthalein clearance, serum transaminase activity suggested that carbontetrachloride at the recommended dose level produced hepatopathy of goats. The commercial medicine treatment brought all the altered values of plasma kinetic parameters to base level and regenerated the damaged tissue of liver. Disposition kinetic study of sparfloxacin showed that carbontetrachloride –induced damage liver retained Sparfloxacin for same period with almost equi concentration

Identification and Characterization of Azo Dye Decolourizing Bacterial Strains, Alcaligenes faecalis E5.Cd and A. faecalis Fal.3 Isolated from Textile Effluents

The study was designed for isolation and characterization of azo dye decolourizing bacteria which is a prerequisite for developing a microorganism-facilitated treatment of polluting dyes. In this study nine types of bacteria which were able to decolourize three types of azo dyes (Blue H/C, Red 3B and Yellow 3R dye) were isolated from textile effluents collected from Gazipur industrial area in Bangladesh. Depending on 16S rDNA analysis, the most efficient decolourizing bacterium for the Blue H/C and the Red 3B dye was identified as Alcaligenesfaecalis strain E5.Cd while that for the Yellow 3R dye was identified as Alcaligenesfaecalis strain Fal.3. After characterization, both A. faecalis E5.Cdand A. faecalis Fal.3 were found to grow optimally at 35 0C and at pH 7 and pH 8, respectively. Both of these strains were sensitive to all antibiotics studied except for Bacitracin. Also, both strains showed maximum decolourization activities after 96 hours incubation in MS media at pH 7 (up to 93%) and pH 8 (up to 94%), at 35 0C temperature ( up to 91%), at 50 ppm initial dye concentration (up to 92%), at 20% inoculum size (up to 93%), and at supplementation of 1% co-substrate (up to 93%)

Preliminary study on the formulation of syariah compliant generic sustained release gliclazide tablet using xanthan gum

Gliclazide (1-(3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-2-yl)-3-(4-methylphenyl)sulfonylurea) is a second-generation sulfonylurea which is orally administered in the treatment of non-insulin-dependent diabetes mellitus in adults. Sustain release drugs help to improve drugs bioavailability by controlling the time of drug release or prolonging it. We are reporting the preliminary formulation of sustain release gliclazide tablets with careful choice of all the ingredients and processes related to syariah compliance manufacturing of pharmaceutical products. In this work, xanthan gum, a natural gum was used to achieve the sustain release criteria. The tablets were produced by wet granulation and semi-automatic tableting process. Tablet characterisation was done following the British Pharmacopoeia (BP) criteria. We expect that the outcome of our study will result in a suitable formulation that could be useful for the formulation of such product that will be helpful for the Muslim patient especially during the fasting month

Effect of processing methods on xylitol-starch base co-processed adjuvant for orally disintegrating tablet application

Orally disintegrating tablet (ODT) is a friendly dosage form that requires no access to water and serves as a solution to non-compliance. There are many co-processed adjuvants available in the market. However, there is no single product possesses all the ideal characteristics such as good compressibility, fast disintegration and good palatability for ODT application. The aim of this research was to produce a xylitol-starch base co-processed adjuvant which is suitable for ODT application. Two processing methods namely wet granulation and freeze drying were used to compare the characteristics of co-processed adjuvant comprising of xylitol, starch and crospovidone XL-10 mixed at various ratios. The co-processed excipients were compressed into ODT and physically characterized for powder flow, particle size, hardness, thickness, weight, friability, in-vitro disintegration time and in-situ disintegration time, lubricant sensitivity, dilution potential, Fourier transform infrared spectroscopy, scanning electronic microscopy and x-ray diffraction analysis. Formulation F6 was selected as the optimum formulation due to the fastest in-vitro (135.33±11.52 s) and in-situ disintegration time (88.67±13.56s) among all the formulations (p<0.05). Increase in starch component decreases disintegration time of ODT. The powder flow fell under the category of fair flow. Generally, it was observed that freeze drying method produced smaller particle size granules compared to wet granulation method. ODT produced from freeze drying method had shorter disintegration time compared to ODT from wet granulation batch. In conclusion, a novel co-processed excipient comprised of xylitol, starch and crospovidone XL-10, produced using freeze drying method with fast disintegration time, good compressibility and palatability was developed and characterized. The co-processed excipient is suitable for ODT application

Dose-response relationship between arsenic exposure and the serum enzymes for liver function tests in the individuals exposed to arsenic: a cross sectional study in Bangladesh

<p>Abstract</p> <p>Background</p> <p>Chronic arsenic exposure has been shown to cause liver damage. However, serum hepatic enzyme activity as recognized on liver function tests (LFTs) showing a dose-response relationship with arsenic exposure has not yet been clearly documented. The aim of our study was to investigate the dose-response relationship between arsenic exposure and major serum enzyme marker activity associated with LFTs in the population living in arsenic-endemic areas in Bangladesh.</p> <p>Methods</p> <p>A total of 200 residents living in arsenic-endemic areas in Bangladesh were selected as study subjects. Arsenic concentrations in the drinking water, hair and nails were measured by Inductively Coupled Plasma Mass Spectroscopy (ICP-MS). The study subjects were stratified into quartile groups as follows, based on concentrations of arsenic in the drinking water, as well as in subjects' hair and nails: lowest, low, medium and high. The serum hepatic enzyme activities of alkaline phosphatase (ALP), aspartate transaminase (AST) and alanine transaminase (ALT) were then assayed.</p> <p>Results</p> <p>Arsenic concentrations in the subjects' hair and nails were positively correlated with arsenic levels in the drinking water. As regards the exposure-response relationship with arsenic in the drinking water, the respective activities of ALP, AST and ALT were found to be significantly increased in the high-exposure groups compared to the lowest-exposure groups before and after adjustments were made for different covariates. With internal exposure markers (arsenic in hair and nails), the ALP, AST and ALT activity profiles assumed a similar shape of dose-response relationship, with very few differences seen in the higher groups compared to the lowest group, most likely due to the temporalities of exposure metrics.</p> <p>Conclusions</p> <p>The present study demonstrated that arsenic concentrations in the drinking water were strongly correlated with arsenic concentrations in the subjects' hair and nails. Further, this study revealed a novel exposure- and dose- response relationship between arsenic exposure metrics and serum hepatic enzyme activity. Elevated serum hepatic enzyme activities in the higher exposure gradients provided new insights into arsenic-induced liver toxicity that might be helpful for the early prognosis of arsenic-induced liver diseases.</p

Next-Generation Sequencing Reveals the Role of Epigallocatechin-3-Gallate in Regulating Putative Novel and Known microRNAs Which Target the MAPK Pathway in Non-Small-Cell Lung Cancer A549 Cells

Lung cancer constitutes 85% of non-small cell lung cancer diagnosed cases. MicroRNAs are novel biomarkers that are capable of modulating multiple oncogenic pathways. Epigallocatechin-3-gallate (EGCG) is a potent chemopreventive and chemotherapeutic agent for cancer. We aimed to identify important known and putative novel microRNAs modulated by EGCG in A549 cells using next-generation sequencing and identify their gene targets. Preliminary analysis revealed an IC50 value of 309 &#956;M with G0/G1 phase arrest at 40 &#956;M EGCG treatment. MicroRNA profiling identified 115 known and 4 putative novel microRNAs in 40&#8201;&#956;M and 134 known and 3 putative novel microRNAs in 100&#8201;&#956;M EGCG-treated A549 cells. The top 10 up-expressed microRNAs were similar between the untreated control and EGCG-treated A549 cells. An up-expression in oncogenic microRNAs, which belong to broadly conserved seed families, were observed in untreated control and EGCG-treated A549 cells. Kyoto Encyclopedia of Genes and Genomes and Protein Analysis Through Evolutionary Relationships pathway analyses of the validated microRNA targeting genes strengthened the hypothesis that EGCG treatment can modulate microRNAs that play a significant role in the MAPK signaling pathway. Expression profile of microRNAs was validation by quantitative real time PCR of randomly selected microRNAs. This study identified signature microRNAs that can be used as novel biomarkers for lung cancer diagnosis