PlantDerived Antimicrobial Peptides because Possible Antiviral Brokers in Wide spread Viral Infections

This is the first report on chiral polymorphic hydrazine-based asymmetric liquid crystal trimers, 1-[4'-(4- (5-Cholesteryloxy)carbonyl)butyloxy]-3-[N-benzylideneoxy-N'-(4-decyloxybenzylidene)hydrazine] butyloxybenzenes, and 1-[4'-(4-(10-cholesteryloxy)carbonyl)nonyloxy]-3-[N-benzylideneoxy-N'-(4- decyloxybenzylidene)hydrazine]butyloxybenzenes., in which the hydrazine and cholesterol arms were connected via two flexible methylene spacers (n = 3-12 units and m = 4 or 9, respectively) to the central resorcinol core.
FT-IR, 1D and 2D NMR spectroscopy, and CHN microanalysis were used to elucidate the structures of the trimers. Differential scanning calorimetry, polarizing optical microscopy and X-ray diffraction were used to study the transitional and phase properties of the trimers, of which they were length and spacer parity dependent. Trimers with short spacer length in the cholesteryl arm, m = 4 showed interesting phase sequence of BP/N*-TGBA*-SmA*.
The TGBA∗ phase was sensitive to spacer length as it was only observed in trimers with short ester linkage. For the long analogues, m = 9, characteristic visible reflection and a much simpler phase sequence with only N* and SmA* phases were seen.
The X-ray diffraction measurements revealed that layer periodicities of the SmA* phase were approximately half the estimated all-trans molecular length (d/L ≈ 0.44-0.52), thus suggesting that the molecules are either strongly intercalated or bent.
The X-ray diffraction measurements revealed that layer periodicities of the SmA* phase were approximately half the estimated all-trans molecular length (d/L ≈ 0.44-0.52), thus suggesting that the molecules are either strongly intercalated or bent.
Combination of different chemotherapy drugs and nanoparticles as a carrier have shown promising delivery system in cancer treatment. Doxorubicin is considered as a potent anticancer drug. However, it's off target activities and possible side effects, make its use limited. Recently, in the field of nanomedicine, different nanoconjugates have been developed as a unique platform for the delivery of therapeutic drugs.
The aim of present study was to evaluate the best possible combination for efficient delivery of DOX with combination of gold, silver and zinc oxide nanoparticles to target site against carbon tetrachloride induced rat hepatotoxicity.
Effect of different conjugates administrated for 14 consecutive days was evaluated.
In comparison to DOX, AuDOX, ZnoODOX and AgDOX showed less sign of liver fibrosis as evaluated by serum enzymes and histo-pathological analysis. However, among all the conjugates, Ag DOX conjugate showed most significant results. The serum alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase values were (111.2 ± 38.21, 323.2 ± 46.88 and 303.6 ± 73.80 respectively) very close to control group (72.2 ± 19.41, 368 ± 59.78 and 259.4 ± 61.54 respectively).
Our results demonstrated that Ag DOX may exhibit hepato-protective activity against CCl4 induced liver damage.
Our results demonstrated that Ag DOX may exhibit hepato-protective activity against CCl4 induced liver damage.
In this study, a novel D-α-tocopheryl polyethylene glycol succinate (TPGS) modified bovine serum albumin (BSA) nanoparticles were developed for delivery of Anastrozole (ANZ) which is optimized by Box-Behnken design (BBD). This TPGS-ANZ-BSA NPs are evaluated for their physicochemical and drug release characteristics.
TPGS-ANZ-BSA NPs were prepared by desolvation thermal gelation method andthe effects of critical process parameter (CPP)which are BSA amount, TPGS concentration and stirring speed on the critical quality attributes (CQA) such as % drug loading (%DL) and particle size were studied using BBD. TPGS-ANZ-BSA NPs were characterized using different spectroscopic techniques including UV-Visible and FTIR is used to confirm the entrapment of ANZ in BSA. DSC and PXRD revealed the amorphization of ANZ in the TPGS-ANZ-BSA NPs after freeze drying. Scanning electron microscopy (SEM) analysis was performed for the surface morphologyanalysesNPs. In vitro release studies were performed at pH 5.5 and pH 7.4 for 48h to mimic tumour microenvironment.
The BBD optimized batch showed 107 nm particle size with % DL of 8.5± 0.5 of TPGS-ANZ-BSA NPs. The spectroscopic and thermal characterizations revealed the successful encapsulation of ANZ inside the nanoparticles.The TPGS-ANZ-BSA NPs were found to exhibit burst release at pH 5.5 and sustained release at pH 7.4. The short-term stability of drug-loaded nanoparticles displayed no significant changes in physicochemical properties at room temperature for period of one month.
The BBD optimized TPGS-ANZ-BSA nanoparticles showed enhanced physiochemical properties for ANZ and potential candidate for anticancer agent drugs delivery.
The BBD optimized TPGS-ANZ-BSA nanoparticles showed enhanced physiochemical properties for ANZ and potential candidate for anticancer agent drugs delivery.Therapy resistance remains the major obstacle to successful cancer treatment. Epithelial-to- mesenchymal transition [EMT], a cellular reprogramming process involved in embryogenesis and organ development and regulated by a number of transcriptional factors [EMT-TFs] such as ZEB1/2, is recognized for its role in tumor progression and metastasis. Recently, a growing body of evidence has implicated EMT in cancer therapy resistance but the actual mechanism that underlie this finding has remained elusive. For example, whether it is, the EMT states in itself or the EMT-TFs that modulates chemo or radio-resistance in cancer is still contentious. Here, we summarise the molecular mechanisms of EMT program and chemotherapeutic resistance in cancer with specific reference to DNA damage response [DDR]. CDK inhibitor We provide an insight into the molecular interplay that exist between EMT program and DNA repair machinery in cancer and how this interaction influences therapeutic response. We review conflicting studies linking EMT and drug resistance via the DNA damage repair axis. We draw scientific evidence demonstrating how several molecular signalling, including EMT-TFs work in operational harmony to induce EMT and confer stemness properties on the EMT-susceptible cells. We highlight the role of enhanced DNA damage repair system associated with EMT-derived stem cell-like states in promoting therapy resistance and suggest a multi-targeting modality in combating cancer treatment resistance.