Formulation and Evaluation of Sustained Release Microspheres of Venlafaxine Hydrochloride.

The goal of a sustained release dosage form is to maintain therapeutic blood or tissue levels of the drug for an extended and specified period of time. This is generally accomplished by attempting to obtain "zero-order" release from the dosage form. Zero-order release constitutes drug release from the dosage form which is independent of the amount of drug in the delivery system (i.e. a constant release rate). Sustained-release systems generally do not attain this type of release and usually try to mimic zero-order release by providing drug in a slow first-order fashion (i.e., concentration release dependent). Systems that are designated as prolonged release can also be considered as attempts at achieving sustained-release delivery. Based on the in vitro drug released characteristics, entrapment efficiency and t25, t50 and t90 values, the formulation F3 was found to be best formulation. By increasing the concentration of polymer, decreased the rate of drug released. According to stability study it was found that there was no variation in Percentage yield, Entrapment efficiency, and in vitro drug released profile of selected formulation F3 at specified period. The formulation F3 was concluded best formulation among the formulations were prepared

Raspberry PI Based Artificial Vision Assisting System for Blind Persons

The main aim of this paper is to implement a system that will help blind person. This system is used by a RASPBERRY PI circuit to provide for the identification of the objects, the first level localization. It also incorporates additional components to provide more refined location and orientation information. The input process is to capture every object around 10m and it is convert into the output processing in voice command which is adopted in Bluetooth headset which is used by blind people using RASPBERRY PI component

Effect of organic and inorganic nutrients on rice (Oryza sativa var. CO 51) productivity and soil fertility in the Western zone of Tamil Nadu, India

In sustainable agriculture, to ensure high-quality food production, a combination of organic and inorganic nutrient sources are required. During the winter season of 2020, a field experiment was undertaken in the western zone of Tamil Nadu to assess the effects of organics and inorganics on the growth, yield, and soil properties of rice, Oryza sativa var. CO 51. The experiment was framed in Random Block Design (RBD) comprising of 8 treatments viz., Recommended dose of fertilizer Soil Test Crop Response (STCR) approach (T1), RDF 75 % + Farm yard manure @ 12.5 t ha-1 (T2), T2 + Seed treatment with Azospirillum and Phosphobacteria + Soil application of AM fungi (T3), RDF 75 % + Vermicompost @ 5 t ha-1 (T4), T4 + Seed treatment with Azospirillum and Phosphobacteria + Soil application of AM fungi (T5), FYM @ 12.5 t ha-1 + Seed treatment with Azospirillum and Phosphobacteria + Soil application of AM fungi (T6), Vermicompost @ 5 t ha-1+ Seed treatment with Azospirillum and Phosphobacteria + Soil application of AM fungi (T7) and absolute control (T8) , replicated thrice. Among the integrated nutrient management practices, T5 proved its superiority over other treatments with respect to growth and physiological parameters followed by T3. This would have been because of the solubilization of phosphorus in the soil by AM organisms which is made accessible for crop growth. Utilization of biofertilizer enhanced the N availability and solubilized the inaccessible phosphorus, which thus recorded higher N accessibility and better phosphorus uptake when applied along with a recommended dose of fertilizer for rice.

An algorithm to find similar internal sequence repeats

In recent years, identification of sequence patterns has been given immense importance to understand better their significance with respect to genomic organization and evolutionary processes. To this end, an algorithm has been derived to identify all similar sequence repeats present in a protein sequence. The proposed algorithm is useful to correlate the three-dimensional structure of various similar sequence repeats available in the Protein Data Bank against the same sequence repeats present in other databases like SWISS-PROT, PIR and Genome databases

Analysis of nitrofurantoin sensitivity in multi drug resistant gram negative bacilli causing UTI in a teaching hospital – A cost effective option

Background Antimicrobial resistance is a growing concern globally, leading to more difficult-to-treat infections and higher mortality rates. Urinary tract infections (UTI) are one of the major indications for prescribing antibiotics, with multidrug resistant Gram-negative bacilli being responsible for a growing proportion of community-acquired uncomplicated UTIs. Our goal is to determine nitrofurantoin, a less costly effective substitute in treating uncomplicated UTI caused by multidrug resistant gram negative bacilli

An Algorithm to Find All Identical Motifs in Multiple Biological Sequences

Sequence motifs are of greater biological importance in nucleotide and protein sequences. The conserved occurrence of identical motifs represents the functional significance and helps to classify the biological sequences. In this paper, a new algorithm is proposed to find all identical motifs in multiple nucleotide or protein sequences. The proposed algorithm uses the concept of dynamic programming. The application of this algorithm includes the identification of (a) conserved identical sequence motifs and (b) identical or direct repeat sequence motifs across multiple biological sequences (nucleotide or protein sequences). Further, the proposed algorithm facilitates the analysis of comparative internal sequence repeats for the evolutionary studies which helps to derive the phylogenetic relationships from the distribution of repeats. © 2010 Springer-Verlag

The role of molecular chaperonins in warm ischemia and reperfusion injury in the steatotic liver: A proteomic study

BACKGROUND: The molecular basis of the increased susceptibility of steatotic livers to warm ischemia/reperfusion (I/R) injury during transplantation remains undefined. Animal model for warm I/R injury was induced in obese Zucker rats. Lean Zucker rats provided controls. Two dimensional differential gel electrophoresis was performed with liver protein extracts. Protein features with significant abundance ratios (p < 0.01) between the two cohorts were selected and analyzed with HPLC/MS. Proteins were identified by Uniprot database. Interactive protein networks were generated using Ingenuity Pathway Analysis and GRANITE software. RESULTS: The relative abundance of 105 proteins was observed in warm I/R injury. Functional grouping revealed four categories of importance: molecular chaperones/endoplasmic reticulum (ER) stress, oxidative stress, metabolism, and cell structure. Hypoxia up-regulated 1, calcium binding protein 1, calreticulin, heat shock protein (HSP) 60, HSP-90, and protein disulfide isomerase 3 were chaperonins significantly (p < 0.01) down-regulated and only one chaperonin, HSP-1was significantly upregulated in steatotic liver following I/R. CONCLUSION: Down-regulation of the chaperones identified in this analysis may contribute to the increased ER stress and, consequently, apoptosis and necrosis. This study provides an initial platform for future investigation of the role of chaperones and therapeutic targets for increasing the viability of steatotic liver allografts

The microaerophilic microbiota of de-novo paediatric inflammatory bowel disease: the BISCUIT study

&lt;p&gt;Introduction: Children presenting for the first time with inflammatory bowel disease (IBD) offer a unique opportunity to study aetiological agents before the confounders of treatment. Microaerophilic bacteria can exploit the ecological niche of the intestinal epithelium; Helicobacter and Campylobacter are previously implicated in IBD pathogenesis. We set out to study these and other microaerophilic bacteria in de-novo paediatric IBD.&lt;/p&gt; &lt;p&gt;Patients and Methods: 100 children undergoing colonoscopy were recruited including 44 treatment naïve de-novo IBD patients and 42 with normal colons. Colonic biopsies were subjected to microaerophilic culture with Gram-negative isolates then identified by sequencing. Biopsies were also PCR screened for the specific microaerophilic bacterial groups: Helicobacteraceae, Campylobacteraceae and Sutterella wadsworthensis.&lt;/p&gt; &lt;p&gt;Results: 129 Gram-negative microaerophilic bacterial isolates were identified from 10 genera. The most frequently cultured was S. wadsworthensis (32 distinct isolates). Unusual Campylobacter were isolated from 8 subjects (including 3 C. concisus, 1 C. curvus, 1 C. lari, 1 C. rectus, 3 C. showae). No Helicobacter were cultured. When comparing IBD vs. normal colon control by PCR the prevalence figures were not significantly different (Helicobacter 11% vs. 12%, p = 1.00; Campylobacter 75% vs. 76%, p = 1.00; S. wadsworthensis 82% vs. 71%, p = 0.312).&lt;/p&gt; &lt;p&gt;Conclusions: This study offers a comprehensive overview of the microaerophilic microbiota of the paediatric colon including at IBD onset. Campylobacter appear to be surprisingly common, are not more strongly associated with IBD and can be isolated from around 8% of paediatric colonic biopsies. S. wadsworthensis appears to be a common commensal. Helicobacter species are relatively rare in the paediatric colon.&lt;/p&gt

Resonant Photonic States in Coupled Heterostructure Photonic Crystal Waveguides

In this paper, we study the photonic resonance states and transmission spectra of coupled waveguides made from heterostructure photonic crystals. We consider photonic crystal waveguides made from three photonic crystals A, B and C, where the waveguide heterostructure is denoted as B/A/C/A/B. Due to the band structure engineering, light is confined within crystal A, which thus act as waveguides. Here, photonic crystal C is taken as a nonlinear photonic crystal, which has a band gap that may be modified by applying a pump laser. We have found that the number of bound states within the waveguides depends on the width and well depth of photonic crystal A. It has also been found that when both waveguides are far away from each other, the energies of bound photons in each of the waveguides are degenerate. However, when they are brought close to each other, the degeneracy of the bound states is removed due to the coupling between them, which causes these states to split into pairs. We have also investigated the effect of the pump field on photonic crystal C. We have shown that by applying a pump field, the system may be switched between a double waveguide to a single waveguide, which effectively turns on or off the coupling between degenerate states. This reveals interesting results that can be applied to develop new types of nanophotonic devices such as nano-switches and nano-transistors

Microbiota of De-Novo Pediatric IBD : Increased Faecalibacterium Prausnitzii and Reduced Bacterial Diversity in Crohn's But Not in Ulcerative Colitis

ACKNOWLEDGMENTS We are grateful for the expertise of our sequencing provider NewGene and in particular for the support and help of Dr Jonathan Coxhead.Mrs Karen McIntyre and Dr Dagmar Kastner were invaluable in identifying patients for recruitment in Dundee. Mrs Ann Morrice provided administrative support in Aberdeen. Dr Paul Henderson gave helpful comments on the manuscript. We appreciate the generosity of the families who freely gave their time and samples to make this study possible and the theatre staff of all centers who allowed time for sample collection during busy endoscopy lists.Peer reviewedPublisher PD