Displaying publications 21 - 40 of 427 in total

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  1. Dai C, Li S, Duan Y, Leong KH, Tu Y, Zhou L
    Sci Total Environ, 2021 Dec 20;801:149730.
    PMID: 34467938 DOI: 10.1016/j.scitotenv.2021.149730
    Pharmaceuticals in aquatic environment have raised wide attention in recent years due to their potential adverse effects and bioaccumulation in biota. China has been a major producer and consumer of pharmaceuticals, however, the potential human health risk of these chemicals is yet to be determined in China. In this study, we evaluated available exposure data for twenty pharmaceuticals in surface waters from Chinese five major river basins (the Yangtze, Haihe, Pearl, Songliao, and Yellow River Basins), and human health risk assessment was performed. Based on the concentration data and risk data, we conducted research on the source, cause, and control measures of the pharmaceuticals. The twenty pharmaceuticals were found to be ubiquitous in China with median concentrations between 0.09 and 304 ng/L. The estimated daily intake of pharmaceuticals from drinking water and eating fish was calculated. The intake via drinking water was significantly lower than that via eating fish. The risk quotients via water intake and fish consumption ranged from 0 to 17.2, with estrogen and sulfapyridine highest among the twenty pharmaceuticals. High risks of exposure were mainly in North China, including the Haihe and Songliao River Basins. This is the first analysis in Chinese major river basins that has filled the gaps in the research on the human health risks of pharmaceuticals. The results of the study provide basic information of pharmaceutical intake from drinking water and eating fish in China and provide insights into the risk management guidance of pharmaceuticals, and will facilitate the optimization of health advisories and policy making.
    Matched MeSH terms: Pharmaceutical Preparations*
  2. Mohd Hanafiah Z, Wan Mohtar WHM, Abd Manan TSB, Bachi' NA, Abdullah NA, Abd Hamid HH, et al.
    Chemosphere, 2022 Jan;287(Pt 2):132134.
    PMID: 34517236 DOI: 10.1016/j.chemosphere.2021.132134
    The water stream has been reported to contain non-steroidal anti-inflammatory drugs (NSAIDs), released from households and premises through discharge from Sewage Treatment Plant (STP). This research identifies commonly consumed NSAIDs namely ibuprofen (IBU), diclofenac (DIC), ketoprofen (KET) and naproxen (NAP) in the influent wastewater from two urban catchments (i.e. 2 STPs). We expand our focus to assess the efficiency of monomer (C18) and dimer (HLB) types of sorbents in the solid phase extraction method followed by gas chromatography mass spectrometry (GCMS) analysis and optimize model prediction of NSAIDs in the influent wastewater using I-Optimal design. The ecological risk assessment of the NSAIDs was evaluated. The HLB produced reliable analysis for all NSAIDs under study (STP1: 6.7 × 10-3 mg L-1 to 2.21 × 10-1 mg L-1, STP2: 1.40 × 10-4 mg L-1 to 9.72 × 10-2 mg L-1). The C18 however, selective to NAP. Based on the Pearson proximity matrices, the DICHLB can be a good indicator for IBUHLB (0.565), NAPC18 (0.721), NAPHLB (0.566), and KETHLB (0.747). The optimized model prediction for KET and NAP based on DIC are successfully validated. The risk quotients (RQ) values of NSAIDs were classified as high (RQ > 1), medium (RQ, 0.1-1) and low (RQ, 0.01-0.1) risks. The optimized models are beneficial for major NSAIDs (KET and NAP) monitoring in the influent wastewater of urban domestic area. An upgrade on the existing wastewater treatment infrastructure is recommended to counteract current water security situation.
    Matched MeSH terms: Pharmaceutical Preparations*
  3. Abdul Halim NA, Hussein MZ, Kandar MK
    Int J Nanomedicine, 2021;16:6477-6496.
    PMID: 34584412 DOI: 10.2147/IJN.S298936
    Hydroxyapatite is a basic mineral that is very important to the human body framework. Recently, synthetic hydroxyapatite (SHA) and its nanocomposites (HANs) are the subject of intense research for bone tissue engineering and drug loading system applications, due to their unique, tailor-made characteristics, as well as their similarities with the bone mineral component in the human body. Although hydroxyapatite has good biocompatibility and osteoconductive characteristics, the poor mechanical strength restricts its use in non-load-bearing applications. Consequently, a rapid increase in reinforcing of other nanomaterials into hydroxyapatite for the formation of HANs could improve the mechanical properties. Most of the research reported on the success of other nanomaterials such as metals, ceramics and natural/synthetic polymers as additions into hydroxyapatite is reviewed. In addition, this review also focuses on the addition of various substances into hydroxyapatite for the formation of various HANs and at the same time to try to minimize the limitations so that various bone tissue engineering and drug loading system applications can be exploited.
    Matched MeSH terms: Pharmaceutical Preparations*
  4. Wong TW
    Curr Drug Deliv, 2008 Apr;5(2):77-84.
    PMID: 18393808
    Microwave has received a widespread application in pharmaceuticals and food processing, microbial sterilization, biomedical therapy, scientific and biomedical analysis, as well as, drug synthesis. This paper reviews the basis of application of microwave to prepare pharmaceutical dosage forms such as agglomerates, gel beads, microspheres, nanomatrix, solid dispersion, tablets and film coat. The microwave could induce drying, polymeric crosslinkages as well as drug-polymer interaction, and modify the structure of drug crystallites via its effects of heating and/or electromagnetic field on the dosage forms. The use of microwave opens a new approach to control the physicochemical properties and drug delivery profiles of pharmaceutical dosage forms without the need for excessive heat, lengthy process or toxic reactants. Alternatively, the microwave can be utilized to process excipients prior to their use in the formulation of drug delivery systems. The intended release characteristics of drugs in dosage forms can be met through modifying the physicochemical properties of excipients using the microwave.
    Matched MeSH terms: Pharmaceutical Preparations/administration & dosage; Pharmaceutical Preparations/chemistry*
  5. Rehman FU, Shah KU, Shah SU, Khan IU, Khan GM, Khan A
    Expert Opin Drug Deliv, 2017 Nov;14(11):1325-1340.
    PMID: 27485144 DOI: 10.1080/17425247.2016.1218462
    INTRODUCTION: Lipid-based drug delivery systems (LBDDS) are the most promising technique to formulate the poorly water soluble drugs. Nanotechnology strongly influences the therapeutic performance of hydrophobic drugs and has become an essential approach in drug delivery research. Self-nanoemulsifying drug delivery systems (SNEDDS) are a vital strategy that combines benefits of LBDDS and nanotechnology. SNEDDS are now preferred to improve the formulation of drugs with poor aqueous solubility. Areas covered: The review in its first part shortly describes the LBDDS, nanoemulsions and clarifies the ambiguity between nanoemulsions and microemulsions. In the second part, the review discusses SNEDDS and elaborates on the current developments and modifications in this area without discussing their associated preparation techniques and excipient properties. Expert opinion: SNEDDS have exhibit the potential to increase the bioavailability of poorly water soluble drugs. The stability of SNEDDS is further increased by solidification. Controlled release and supersaturation can be achieved, and are associated with increased patient compliance and improved drug loads, respectively. Presence of biodegradable ingredients and ease of large-scale manufacturing combined with a lot of 'drug-targeting opportunities' give SNEDDS a clear distinction and prominence over other solubility enhancement techniques.
    Matched MeSH terms: Pharmaceutical Preparations/administration & dosage; Pharmaceutical Preparations/chemistry
  6. Ibrahim WAW, Wahib SMA, Hermawan D, Sanagi MM
    Methods Mol Biol, 2019;1985:407-416.
    PMID: 31069749 DOI: 10.1007/978-1-4939-9438-0_24
    Particular attention has been paid to capillary electrophoresis as versatile and environmentally friendly approach for enantioseparations of a wide spectrum of compounds. Cyclodextrin-modified micellar electrokinetic chromatography (CD-MEKC) is a method of choice to provide effective separation toward hydrophobic and uncharged stereoisomers. The chiral discrimination of the solutes relies upon the partitioning between a given CD in the aqueous phase and micelles formed from a surfactant. Synergistic combinations of chiral selectors, surfactant, and modifier contribute to successful enantioseparations of the enantiomers. In this chapter, an application of CD-MEKC for the enantioseparation of selected imidazole drugs employing a dual CDs system is described.
    Matched MeSH terms: Pharmaceutical Preparations/isolation & purification; Pharmaceutical Preparations/chemistry
  7. Choudhury H, Gorain B, Chatterjee B, Mandal UK, Sengupta P, Tekade RK
    Curr Pharm Des, 2017;23(17):2504-2531.
    PMID: 27908273 DOI: 10.2174/1381612822666161201143600
    BACKGROUND: Most of the active pharmaceutical ingredients discovered recently in pharmaceutical field exhibits poor aqueous solubility that pose major problem in their oral administration. The oral administration of these drugs gets further complicated due to their short bioavailability, inconsistent absorption and inter/intra subject variability.

    METHODS: Pharmaceutical emulsion holds a significant place as a primary choice of oral drug delivery system for lipophilic drugs used in pediatric and geriatric patients. Pharmacokinetic studies on nanoemulsion mediated drugs delivery approach indicates practical feasibility in regards to their clinical translation and commercialization.

    RESULTS: This review article is to provide an updated understanding on pharmacokinetic and pharmacodynamic features of nanoemulsion delivered via oral, intravenous, topical and nasal route.

    CONCLUSION: The article is of huge interest to formulation scientists working on range of lipophilic drug molecules intended to be administered through oral, intravenous, topical and nasal routes for vivid medical benefits.

    Matched MeSH terms: Pharmaceutical Preparations/administration & dosage*; Pharmaceutical Preparations/chemistry*
  8. Kumar M, Kumar D, Singh S, Chopra S, Mahmood S, Bhatia A
    Curr Pharm Des, 2024;30(6):410-419.
    PMID: 38747045 DOI: 10.2174/0113816128289965240123074111
    Foam-based delivery systems contain one or more active ingredients and dispersed solid or liquid components that transform into gaseous form when the valve is actuated. Foams are an attractive and effective delivery approach for medical, cosmetic, and pharmaceutical uses. The foams-based delivery systems are gaining attention due to ease of application as they allow direct application onto the affected area of skin without using any applicator or finger, hence increasing the compliance and satisfaction of the patients. In order to develop foam-based delivery systems with desired qualities, it is vital to understand which type of material and process parameters impact the quality features of foams and which methodologies may be utilized to investigate foams. For this purpose, Quality-by-Design (QbD) approach is used. It aids in achieving quality-based development during the development process by employing the QbD concept. The critical material attributes (CMAs) and critical process parameters (CPPs) were discovered through the first risk assessment to ensure the requisite critical quality attributes (CQAs). During the initial risk assessment, the high-risk CQAs were identified, which affect the foam characteristics. In this review, the authors discussed the various CMAs, CPPs, CQAs, and risk factors associated in order to develop an ideal foam-based formulation with desired characteristics.
    Matched MeSH terms: Pharmaceutical Preparations/administration & dosage; Pharmaceutical Preparations/chemistry
  9. Al Azzam KM, Saad B, Aboul-Enein HY
    Biomed Chromatogr, 2010 Sep;24(9):948-53.
    PMID: 20082285 DOI: 10.1002/bmc.1390
    Capillary zone electrophoresis coupled with a capacitively coupled contactless conductivity detector (CE-C(4)D) has been employed for the determination of atenolol and amiloride in pharmaceutical formulations. Acetic acid (150 mm) was used as background electrolyte. The influence of several factors (detector excitation voltage and frequency, buffer concentration, applied voltage, capillary temperature and injection time) was studied. Non-UV-absorbing L-valine was used as internal standard; the analytes were all separated in less than 7 min. The separation was carried out in normal polarity mode at 28 degrees C, 25 kV and using hydrodynamic injection (25 s). The separation was effected in an uncoated fused-silica capillary (75 microm, i.d. x 52 cm). The CE-C(4)D method was validated with respect to linearity, limit of detection and quantification, accuracy, precision and selectivity. Calibration curves were linear over the range 5-250 microg/mL for the studied analytes. The relative standard deviations of intra- and inter-day migration times and corrected peak areas were less than 6.0%. The method showed good precision and accuracy and was successfully applied to the simultaneous determination of atenolol and amiloride in different pharmaceutical tablet formulations.
    Matched MeSH terms: Pharmaceutical Preparations/analysis*
  10. Winzeler RL
    Halcyon, 1985;7:77-91.
    PMID: 11617027
    Matched MeSH terms: Pharmaceutical Preparations/history*
  11. Ford AC, Moayyedi P, Black CJ, Yuan Y, Veettil SK, Mahadeva S, et al.
    Aliment Pharmacol Ther, 2021 01;53(1):8-21.
    PMID: 32936964 DOI: 10.1111/apt.16072
    BACKGROUND: Functional dyspepsia (FD) is a relapsing and remitting condition affecting between 5% and 10% of people. Efficacious therapies are available, but their relative efficacy is unknown.

    AIM: To perform a systematic review with network meta-analysis to resolve this uncertainty.

    METHODS: We searched the medical literature through July 2020 for randomised controlled trials (RCTs) assessing efficacy of drugs for adults with FD, compared with each other, or placebo. Trials reported a dichotomous assessment of symptom status after completion of therapy. We pooled data using a random effects model. Efficacy was reported as a pooled relative risk (RR) of remaining symptomatic with a 95% confidence interval (CI) to summarise efficacy of each comparison tested. Relative ranking was assessed with surface under the cumulative ranking curve (SUCRA) probabilities.

    RESULTS: We identified 71 eligible RCTs (19 243 participants). Tricyclic antidepressants (TCAs) were ranked second for efficacy (RR of remaining symptomatic = 0.71; 95% CI 0.58-0.87, SUCRA 0.87), and first when only low risk of bias trials were included. Most RCTs that used TCAs recruited patients who were refractory to other drugs included in the network. Although sulpiride or levosulpiride were ranked first for efficacy (RR = 0.49; 95% CI 0.36-0.69, SUCRA 0.99), trial quality was low and only 86 patients received active therapy. TCAs were more likely to cause adverse events than placebo.

    CONCLUSIONS: TCAs, histamine-2 receptor antagonists, standard- and low-dose proton pump inhibitors, sulpiride or levosulpiride, itopride and acotiamide were all more efficacious than placebo for FD.

    Matched MeSH terms: Pharmaceutical Preparations*
  12. Saniasiaya J, Kulasegarah J
    Int J Pediatr Otorhinolaryngol, 2020 Dec;139:110482.
    PMID: 33166755 DOI: 10.1016/j.ijporl.2020.110482
    INTRODUCTION: Paediatrics obstructive sleep apnoea have been discussed to a great degree over the recent years and remains a conundrum till date. The advent of instrumentation has aided upper airway evaluation in determining the site and degree of upper airway collapse for targeted and effective surgical planning. The literature was reviewed to determine the outcome of Drug Induced Sleep Endoscopy (DISE) directed surgery in children with obstructive sleep apnoea.

    MATERIAL AND METHODS: A literature search was conducted for the period from January 2000 to December 2019 by using a number of medical literature data bases including Scopus, PubMed and Embase. The following search words were used either individually or in combination: drug-induced sleep endoscopy, sleep endoscopy directed surgery, paediatrics sleep apnoea. The search was conducted over a month period (December 2019). Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and the Cochrane Handbook for Systematic Reviews of Interventions were followed when possible.

    RESULTS: Seven clinical research articles were selected based on our objective and selection criteria. Seven studies were of level III evidence: retrospective, case-control and prospective series. Altogether, there were 996 patients with male predominance; 61%. Over 10% of patients (133 patients) were found to have comorbidities or were syndromic. The mean age of patient was 6 years and majority (87.6%) of our patients were found to be surgically naïve, that is, no previous surgical procedures were performed for OSA. Surgical decision was changed in 295 patients (30%) following DISE. Post intervention outcomes were objectively revealed in 4 studies. Most of our patients underwent a multilevel surgery based on DISE (86%). Complications were documented in 3 studies.

    CONCLUSIONS: Analysis of the results indicated that DISE directed surgery was an effective, safe therapeutic approach to treating paediatrics obstructive sleep apnoea. DISE directed surgery has shown to have changed surgical management in most studies.

    Matched MeSH terms: Pharmaceutical Preparations*
  13. Hiebert L, Azzeri A, Dahlui M, Hecht R, Mohamed R, Hana Shabaruddin F, et al.
    Subst Use Misuse, 2020;55(6):871-877.
    PMID: 31933411 DOI: 10.1080/10826084.2019.1708943
    Background: As hepatitis C elimination efforts are launched, national strategies for screening and treatment scale-up in countries, such as Malaysia, must be designed and implemented. Strategic information, including estimates of the total number of patients chronically-infected with hepatitis C virus (HCV) and the size of key populations, such as people who inject drugs (PWID), is critical to informing these efforts. For Malaysia, the estimate of the PWID population size most frequently reported in global systematic reviews is for the year 2009. Objectives: To support ongoing national HCV planning efforts, we aimed to estimate the national population size of active PWID in Malaysia, for the years 2014 and 2017. Methods: To estimate the PWID population size, we applied standard benchmark-multiplier methodology, frequently used for PWID population size estimation, and extended it by adjusting for cessation of injecting drug use within the benchmark and calculating statistical uncertainty intervals. Results: The estimated active PWID population size was 153,000 (95% uncertainty interval (UI): 136,000-172,000) for 2014 and 156,000 (95% UI: 137,000-188,000) for 2017. Conclusions/importance: This updated estimate of the active PWID population size in Malaysia will help inform effective planning for the scale-up of HCV screening and treatment services. The proposed methodology is applicable to other countries that maintain national HIV registries and have conducted Integrated Biological and Behavioral Surveys among active PWID.
    Matched MeSH terms: Pharmaceutical Preparations*
  14. Girelli G
    Int J Drug Policy, 2021 06;92:103155.
    PMID: 33994308 DOI: 10.1016/j.drugpo.2021.103155
    BACKGROUND: in recent years, many Asian countries have witnessed an intensification in populist discourses identifying the death penalty as a central tool of drug control, with public opinion surveys referred to as invaluable evidence of public support for the death penalty. This paper will address the claim that the public supports capital punishment, and the role of surveys in shaping this discourse.

    METHODS: review of thirty-nine public opinion surveys on the death penalty carried out in five Asian countries which retain the death penalty for drugs or are considering re-introducing it. The review was conducted by analysing and comparing design, methodology, findings, and the relationship between these elements.

    RESULTS: all but two surveys recorded a majoritarian support for the death penalty, driven by beliefs in (a) deterrent effect of the death penalty, and (b) perfect justice - both disproven. Complex surveys found a low intensity of support, and a limited interest and knowledge by the public in capital punishment. Support for capital punishment is lower for drug offences specifically, and it decreases significantly when expressed with reference to real-life cases. Limited data suggest that the public in the focus countries has reservations on the effectiveness of the death penalty to reduce drug offences, and prefers a discretionary system of punishment. The analysis also revealed correlations between the framing of survey questions and their findings.

    CONCLUSION: Public opinion surveys conducted in China, Malaysia, the Philippines, Singapore, and Thailand suggest that the public knows little and has little interest in the death penalty. Although majoritarian, its support is based on a faulty understanding of key facts related to capital punishment, and an increase in knowledge is correlated to a decrease in support. More rigorous polling exercises demonstrate that public support for capital punishment - both in general and for drug offences specifically - is instinctive, abstract, elastic, and contextual.

    Matched MeSH terms: Pharmaceutical Preparations*
  15. Mostyn B
    Int J Drug Policy, 2021 06;92:103167.
    PMID: 33627303 DOI: 10.1016/j.drugpo.2021.103167
    BACKGROUND: Research into capital punishment has focussed on the length of time it will take to abolish. It will take decades or centuries. A key moment in the movement to abolish the death penalty was the 1980s when the Second Optional Protocol to the ICCPR was developed. This was also the decade that the last significant changes were made to the United Nations drug conventions. At the time, awareness of the issue of capital punishment for drug offences was increasing around the world as more people were getting executed. This article looks at how western countries and the United Nations responded to Malaysia which introduced the mandatory death penalty for drug offences in 1982.

    METHODS: Over 30,000 pages of documents have been accessed through the National Archives of Australia in Canberra. These have been photographed, scanned and converted to OCR. The most relevant folders have then been analysed through NVivo 12 to look for relevant mentions of the research question: capital punishment and Malaysia. All probative data is then presented in the article.

    RESULTS: The data from National Archives suggests that the UN, Australia, and other western countries were happy to continue supporting Malaysia's drug policy and to elect it to high positions at UN meetings despite their public proclamations that they were opposed to the death penalty.

    CONCLUSION: Applying a critical juncture approach, the article concludes that the 1980s was a critical juncture in the movement to abolish the death penalty but abolitionist countries allowed capital punishment to continue for drug offences. This may have set back the abolition movement by decades.

    Matched MeSH terms: Pharmaceutical Preparations*
  16. Shin ES, Bang LH, Jun EJ, Her AY, Chung JH, Garg S, et al.
    Cardiol J, 2021;28(4):615-622.
    PMID: 32789835 DOI: 10.5603/CJ.a2020.0105
    Although drug-eluting stents (DES) have become the mainstay of percutaneous coronary intervention, late and very late stent thrombosis remains a concern. Drug-coated balloons (DCB) have the advantage of preserving the anti-restenotic benefits of DES while minimizing potential long-term safety concerns. Currently the two methods to ensure successful DCB treatment of a stenotic lesion are angiography or physiology-guided DCB application. This review will evaluate these two methods based on previous evidence and make suggestions on how to perform DCB treatment more efficiently and safely.
    Matched MeSH terms: Pharmaceutical Preparations*
  17. Sharma A, Kumar D, Dahiya K, Hawthorne S, Jha SK, Jha NK, et al.
    Nanomedicine (Lond), 2021 09;16(21):1905-1923.
    PMID: 34348474 DOI: 10.2217/nnm-2021-0057
    The increasing burden of respiratory diseases caused by microbial infections poses an immense threat to global health. This review focuses on the various types of biofilms that affect the respiratory system and cause pulmonary infections, specifically bacterial biofilms. The article also sheds light on the current strategies employed for the treatment of such pulmonary infection-causing biofilms. The potential of nanocarriers as an effective treatment modality for pulmonary infections is discussed, along with the challenges faced during treatment and the measures that may be implemented to overcome these. Understanding the primary approaches of treatment against biofilm infection and applications of drug-delivery systems that employ nanoparticle-based approaches in the disruption of biofilms are of utmost interest which may guide scientists to explore the vistas of biofilm research while determining suitable treatment modalities for pulmonary respiratory infections.
    Matched MeSH terms: Pharmaceutical Preparations*
  18. Kanakaraju D, Glass BD, Oelgemöller M
    J Environ Manage, 2018 Aug 01;219:189-207.
    PMID: 29747102 DOI: 10.1016/j.jenvman.2018.04.103
    Pharmaceuticals, which are frequently detected in natural and wastewater bodies as well as drinking water have attracted considerable attention, because they do not readily biodegrade and may persist and remain toxic. As a result, pharmaceutical residues pose on-going and potential health and environmental risks. To tackle these emerging contaminants, advanced oxidation processes (AOPs) such as photo-Fenton, sonolysis, electrochemical oxidation, radiation and ozonation etc. have been applied to remove pharmaceuticals. These processes utilize the high reactivity of hydroxyl radicals to progressively oxidize organic compounds to innocuous products. This review provides an overview of the findings from recent studies, which have applied AOPs to degrade pharmaceutical compounds. Included is a discussion that links various factors of TiO2-mediated photocatalytic treatment to its effectiveness in degrading pharmaceutical residues. This review furthermore highlights the success of AOPs in the removal of pharmaceuticals from different water matrices and recommendations for future studies are outlined.
    Matched MeSH terms: Pharmaceutical Preparations*
  19. Gupta G, Chellappan DK, Singh SK, Gupta PK, Kesari KK, Jha NK, et al.
    Nanomedicine (Lond), 2021 10;16(25):2243-2247.
    PMID: 34547920 DOI: 10.2217/nnm-2021-0254
    Matched MeSH terms: Pharmaceutical Preparations*
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