The Pharmaceutical Management Agency, better known as Pharmac, is a New Zealand Crown entity that decides, on behalf of District Health Boards, which medicines and pharmaceutical products are subsidised for use in the community and public hospitals.Pharmac was created in 1993 as a response to the ever-increasing costs of pharmaceuticals. The agency's primary aim is "to secure for eligible people in need of pharmaceuticals, the best health outcomes that are reasonably achievable from pharmaceutical treatment and from within the amount of funding provided." In 2016/17, Pharmac had a subsidy budget of approximately $850 million, which was used to subsidise 48.5 million prescriptions issued to 3.6 million New Zealanders.While initially responsible for community medicines only, Pharmac's role has been expanded to include all medicines used in DHB hospitals, and in preparation for the national management of medical devices. On 1 July 2012, the management of the national immunisation schedule, and assessment of new vaccines, transferred to Pharmac from the Ministry of Health.Pharmac's current governing legislation is the New Zealand Public Health and Disability Act 2000, specifically sections 46 to 53. As a Crown entity, the agency is responsible to the Minister of Health via its board of directors.
Herein, a multicolor heterojunction photodetector was fabricated using organic Hibiscus sabdariffa (HBS) material and two-dimensional (2D) dysprosium-doped GaSe as an HBS@GaSe design. For the fabricated hybrid heterojunction, multicolor broadband photodetection covering UV-vis-NIR spectra is observed for the light power density of 7 mW/cm2, and the optoelectronic properties of the heterojunction photodetector were studied in detail. Electrooptical measurements were performed with I-V measurements under white light as well as under 365 nm violet (UV), 590 nm (yellow), and 850 nm IR light irradiation. For this purpose, the key parameters of a photodetector, such as ON/OFF ratio, responsivity, specific detectivity, NPDR, NEP, and EQE, have been calculated. Under illumination of 590 nm, a maximum ON/OFF ratio of 1.8 x 104 was observed for -1.76 V reverse bias. The photodetectors exhibit excellent photoresponse properties, with a high responsivity of 2166 mA/W, an EQE of 736%, and a high detectivity of 6.81 x 1012 Jones at 590 nm. The high responsivity was attributed to the interfacial traps, enhancing the photoconductivity gain. Our work suggests that the HBS@GaSe-based organic/inorganic hybrid heterojunction is a promising candidate for ultrasensitive multicolor photodetection.
Three geranylgeranyl pyrophosphate derivatives carrying an ether group at different positions within geranylgeranyl pyrophosphate were employed in biotransformations with five diterpene synthases (CotB2, PvHVS, PaFS, Bnd4 and TXS) derived from plants, bacteria and fungi. A total of six new oxygen-containing diterpenoids were isolated and characterized, deepening our knowledge on the substrate promiscuity of diterpene synthases. In addition, the diterpene synthase PvHVS also accepts an ether derivative of farnesyl pyrophosphate and converts it to the same tetrahydrofuran core as found for the analogous extended GGPP substrate. This result further demonstrates that diterpene synthases also exhibit promiscuity toward truncated unnatural substrates.
This study aims to determine the most effective method for extracting rosmarinic acid (RA) from Rosmarinus officinalis L. (R. officinalis) leaves using Response Surface Methodology (RSM). Additionally, it seeks to quantify RA through High-Performance Thin Layer Chromatography (HPTLC) and evaluate its antioxidant properties. RSM was employed to optimise the extraction parameters like extraction time, temperature and drug solvent ratio. to maximise the RA yield. HPTLC densiometric method was used to quantify the RA. Furthermore, its antioxidant activity was assessed using the 2,2-diphenyl-1-picrylhydrazyl assay.A quadratic polynomial model was found to be the most suitable method for predicting RA yield, with an R-2 value of 0.9421 and a %CV of 9.19. The adjusted R-2, predicted R-2, and signal-to-noise ratio were 0.8677, 0.7481, and 10.2822, respectively, indicating a good model fit and an adequate signal. The optimized HPTLC procedure used a solvent system of toluene and ethyl acetate, yielding an Rf value of 0.55 +/- 0.2 for RA. This research established an optimized extraction method for RA and verified its antioxidant properties. The findings contribute to enhancing RA extraction techniques and advancing research on its biological functions, particularly in combating oxidative stress, reducing inflammation, and supporting neuroprotection.
Ravijyot Saggu looks at the efforts being made to reduce the impact of healthcare on the climate
