Displaying publications 61 - 80 of 115 in total

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  1. Fulltext Histopathological changes of acetaminophen-induced liver injury and subsequent liver regeneration in BALB/C and ICR mice
    Muhammad-Azam F, Nur-Fazila SH, Ain-Fatin R, Mustapha Noordin M, Yimer N
    Vet World, 2019 Nov;12(11):1682-1688.
    PMID: 32009746 DOI: 10.14202/vetworld.2019.1682-1688
    Background and Aim: Laboratory mice are widely used as a research model to provide insights into toxicological studies of various xenobiotic. Acetaminophen (APAP) is an antipyretic and analgesic drug that is commonly known as paracetamol, an ideal hepatotoxicant to exhibit centrilobular necrosis in laboratory mice to resemble humans. However, assessment of histopathological changes between mouse strains is important to decide the optimal mouse model used in APAP toxicity study. Therefore, we aim to assess the histomorphological features of APAP-induced liver injury (AILI) in BALB/C and Institute of Cancer Research (ICR) mice.

    Materials and Methods: Twenty-five ICR mice and 20 BALB/C mice were used where five animals as control and the rest were randomly divided into four time points at 5, 10, 24 and 48 hours post-dosing (hpd). They were induced with 500 mg/kg APAP intraperitoneally. Liver sections were processed for hematoxylin-eosin staining and histopathological changes were scored based on grading methods.

    Results: Intense centrilobular damage was observed as early as 5 hpd in BALB/C as compared to ICR mice, which was observed at 10 hpd. The difference of liver injury between ICR and BALB/C mice is due to dissimilarity in the genetic line-up that related to different elimination pathways of APAP toxicity. However, at 24 hpd, the damage was markedly subsided and liver regeneration had taken place for both ICR and BALB/C groups with evidence of mitotic figures. This study showed that normal liver architecture was restored after the clearance of toxic insult.

    Conclusion: AILI was exhibited earlier in BALB/C than ICR mice but both underwent liver recovery at later time points.

    Matched MeSH terms: Acetaminophen
  2. Fulltext Endogenous Antioxidant and LOX-Mediated Systems Contribute to the Hepatoprotective Activity of Aqueous Partition of Methanol Extract ofMuntingia calaburaL. Leaves against Paracetamol Intoxication
    Zakaria ZA, Mahmood ND, Mamat SS, Nasir N, Omar MH
    Front Pharmacol, 2017;8:982.
    PMID: 29497375 DOI: 10.3389/fphar.2017.00982
    Methanol extract ofMuntingia calaburaL. (family Muntingiaceae) leaf has been reported to exert various pharmacological activities including hepatoprotection. The present study was carried out to identify the most effective hepatoprotective partition derived from the extract and to determine the mechanisms of action involved. The extract was partitioned using solvents with different polarity to yield petroleum ether (PEMC), ethyl acetate (EAMC), and aqueous (AQMC) extracts. Each extract, at 250 mg/kg, was subjected to the paracetamol (PCM)-induced hepatotoxic assay and several parameters such as liver weight, liver/body weight ratio, serum liver enzymes' level, and histopathological examinations were determined. Each partition was also tested for their antioxidant and anti-inflammatory potentials. The most effective extract (AQMC) was prepared in additional dose of 50 and 500 mg/kg, and then subjected to the same liver toxicity test in addition to the endogenous antioxidant enzymes assay. Moreover, AQMC was also subjected to the phytochemical screening and HPLC analysis. Overall, from the results obtained: AQMC exerted significant (p< 0.05): (i) antioxidant activity when assessed using the DPPH, SOD and ORAC assays with high TPC detected; (ii) anti-inflammatory activity via LOX, but not XO pathway; (iii) hepatoprotective activity indicated by its ability to reverse the effect of PCM on the liver weight and liver/body weight ratio, the level of serum liver enzymes (ALT, AST, and ALP), and activity of several endogenous antioxidant enzymes (SOD and CAT). Phytochemicals analyses demonstrated the presence of several flavonoid-based bioactive compounds such as gallic acid and quercetin, which were reported to possess hepatoprotective activity. In conclusion, AQMC exerts hepatoprotective activity against the PCM-induced toxicity possibly by having a remarkable antioxidant potential and ability to activate the endogenous antioxidant system possibly via the synergistic action of its phytoconstituents.
    Matched MeSH terms: Acetaminophen
  3. Fulltext Drug Utilisation Patterns in Children Admitted to a Paediatric General Medical Ward in Five Countries
    Rashed AN, Wong IC, Wilton L, Tomlin S, Neubert A
    Drugs Real World Outcomes, 2015 11 18;2(4):397-410.
    PMID: 26690854 DOI: 10.1007/s40801-015-0049-y
    OBJECTIVE: To investigate and compare drug prescription patterns in children admitted to a paediatric general medical ward in five countries.

    METHODS: A prospective cohort study conducted on paediatric medical wards in the UK, Germany, Australia, Hong Kong (HK) and Malaysia. Data were collected over 3 months in each country except in Australia (1 month). All medications prescribed were classified according to the WHO Anatomical Therapeutic Chemical (ATC) classification. For each drug, frequency of prescriptions and patient exposures were calculated for ATC anatomical and therapeutic levels overall and by country.

    RESULTS: One thousand two hundred and seventy-eight patients were included (Australia 146, Germany 376, UK 313, HK 143 and Malaysia 300); 89.2 % of patients (1140) received medications, median 3 (interquartile range 2-5) drugs per patient. 5367 drugs were prescribed. The most frequently prescribed therapeutic groups in all countries were: systemic antibacterials (1355; 25.2 %), analgesics/non-steroidal anti-inflammatory drugs (NSAIDs) (1173; 21.8 %) and drugs for obstructive airway diseases (472; 8.8 %). Overall, 65.1 % (742) of patients received at least one systemic antibacterial, 63.7 % (726) received one or more analgesic/NSAIDs, and 23.6 % (269) received 'drugs for obstructive airway diseases'. The number of patients exposed to these groups differed significantly between countries (p 
    Matched MeSH terms: Acetaminophen
  4. Fulltext Simultaneous determination of tramadol and paracetamol in human plasma using LC-MS/MS and application in bioequivalence study of -fixed-dose combination
    Loh GOK, Wong EYL, Goh CZ, Tan YTF, Lee YL, Pang LH, et al.
    Ann Med, 2023;55(2):2270502.
    PMID: 37857359 DOI: 10.1080/07853890.2023.2270502
    The study aimed to develop a sensitive and high-throughput liquid chromatography coupled with tandem mass spectrometry method to quantify concentrations of tramadol and paracetamol simultaneously in human plasma. Sample preparation involved single-step protein precipitation using methanol and two deuterated internal standards, tramadol D6 and paracetamol D4. Agilent Poroshell 120 EC-C18 (100 × 2.1 mm, 2.1 µm) analytical column was employed to achieve chromatographic separation. Detection was in positive ion multiple reaction monitoring mode. A tailing factor (Tf) of <1.2, separation factor (K prime) of >1.5 from the column dead time and signal-to-noise (S/N) ratio >10, were obtained for analytes and internal standards. The standard curve was linear over the concentration range of 2.5-500.00 ng/mL for tramadol and 0.025-20.00 μg/mL for paracetamol. A small injection volume of 1 µL, low flow rate of 440 µL/min and short analysis time of 3.5 min reduced the solvent consumption, analysis cost and system contamination. The results of method validation parameters fulfilled the acceptance criteria of bioanalytical guidelines. The method was successfully applied to a bioequivalence study of fixed-dose combination products of tramadol and paracetamol in Malaysian healthy subjects.
    Matched MeSH terms: Acetaminophen
  5. Fulltext Anti-Inflammatory Property of Plantago major Leaf Extract Reduces the Inflammatory Reaction in Experimental Acetaminophen-Induced Liver Injury
    Hussan F, Mansor AS, Hassan SN, Tengku Nor Effendy Kamaruddin TN, Budin SB, Othman F
    Evid Based Complement Alternat Med, 2015;2015:347861.
    PMID: 26300946 DOI: 10.1155/2015/347861
    Hepatic injury induces inflammatory process and cell necrosis. Plantago major is traditionally used for various diseases. This study aimed to determine the anti-inflammatory property of P. major leaf extracts on inflammatory reaction following acetaminophen (APAP) hepatotoxicity. Thirty male Sprague-Dawley rats were divided into 5 groups, namely, normal control (C), APAP, aqueous (APAP + AQ), methanol (APAP + MT), and ethanol (APAP + ET) extract treated groups. All APAP groups received oral APAP (2 g/kg) at day 0. Then, 1000 mg/kg dose of P. major extracts was given for six days. The levels of liver transaminases were measured at day 1 and day 7 after APAP induction. At day 7, the blood and liver tissue were collected to determine plasma cytokines and tissue 11β-HSD type 1 enzyme. The in vitro anti-inflammatory activities of methanol, ethanol, and aqueous extracts were 26.74 ± 1.6%, 21.69 ± 2.81%, and 12.23 ± 3.15%, respectively. The ALT and AST levels were significantly higher in the APAP groups at day 1 whereas the enzyme levels of all groups showed no significant difference at day 7. The extracts treatment significantly reduced the proinflammatory cytokine levels and significantly increased the 11β-HSD type 1 enzyme activity (p < 0.05). In conclusion, the P. major extracts attenuate the inflammatory reaction following APAP-induced liver injury.
    Matched MeSH terms: Acetaminophen
  6. Fulltext Antioxidant Activity and Hepatoprotective Potential of Polyalthia longifolia and Cassia spectabilis Leaves against Paracetamol-Induced Liver Injury
    Jothy SL, Aziz A, Chen Y, Sasidharan S
    Evid Based Complement Alternat Med, 2012;2012:561284.
    PMID: 23243455 DOI: 10.1155/2012/561284
    In the present study, in vitro antioxidant, free radical scavenging capacity, and hepatoprotective activity of methanol extracts from Polyalthia longifolia and Cassia spectabilis were evaluated using established in vitro models such as ferric-reducing antioxidant power (FRAP), 2,2-diphenyl-1-picryl-hydrazyl (DPPH(•)), hydroxyl radical (OH(•)), nitric oxide radical (NO(•)) scavenging, metal chelating, and antilipidperoxidation activities. Interestingly, all the extracts showed considerable in vitro antioxidant and free radical scavenging activities in a dose-dependent manner when compared to the standard antioxidant which verified the presence of strong antioxidant compound in leaf extracts tested. Phenolic and flavonoid content of these extracts is significantly correlated with antioxidant capacity. Since P. longifolia extract was exhibited better in vitro antioxidant activities, it was subjected for in vivo hepatoprotective activity in paracetamol-intoxicated mice. Therapy of P. longifolia showed the liver protective effect on biochemical and histopathological alterations. Moreover, histological studies also supported the biochemical finding, that is, the maximum improvement in the histoarchitecture of the liver. Results revealed that P. longifolia leaf extract could protect the liver against paracetamol-induced oxidative damage by possibly increasing the antioxidant protection mechanism in mice. Our findings indicated that P. longifolia and C. spectabilis have potential as good sources of natural antioxidant/antiaging compounds.
    Matched MeSH terms: Acetaminophen
  7. Highly electrochemically active Ti3C2Tx MXene/MWCNT nanocomposite for the simultaneous sensing of paracetamol, theophylline, and caffeine in human blood samples
    Mari E, Duraisamy M, Eswaran M, Sellappan S, Won K, Chandra P, et al.
    Mikrochim Acta, 2024 Mar 20;191(4):212.
    PMID: 38509344 DOI: 10.1007/s00604-024-06273-9
    The facile fabrication is reported of highly electrochemically active Ti3C2Tx MXene/MWCNT (3D/1D)-modified screen-printed carbon electrode (SPE) for the efficient simultaneous electrochemical detection of paracetamol, theophylline, and caffeine in human blood samples. 3D/1D Ti3C2Tx MXene/MWCNT nanocomposite was synthesized using microwave irradiation and ultrasonication processes. Then, the Ti3C2Tx/MWCNT-modified SPE electrode was fabricated and thoroughly characterized towards its physicochemical and electrochemical properties using XPS, TEM, FESEM, XRD, electrochemical impedance spectroscopy, cyclic voltammetry, and differential pulse voltammetry techniques. As-constructed Ti3C2Tx-MWCNT/SPE offers excellent electrochemical sensing performance with good detection limits (0.23, 0.57, and 0.43 µM) and wide linear ranges (1.0 ~ 90.1, 2.0 ~ 62.0, and 2.0-90.9 µM) for paracetamol, caffeine, and theophylline, respectively,  in the human samples. Notably, the non-enzymatic electroactive nanocomposite-modified electrode has depicted a semicircle Nyquist plot with low charge transfer resistance (Rct∼95 Ω), leading to high ionic diffusion and facilitating an excellent electron transfer path. All the above results in efficient stability, reproducibility, repeatability, and sensitivity compared with other reported works, and thus, it claims its practical utilization in realistic clinical applications.
    Matched MeSH terms: Acetaminophen
  8. Fulltext Hepatoprotective Effects of Zerumbone against Paracetamol-Induced Acute Hepatotoxicity in Rats
    Hamid A, Lee LS, Karim SR, Jufri NF
    Malays J Med Sci, 2018 Mar;25(2):64-71.
    PMID: 30918456 MyJurnal DOI: 10.21315/mjms2018.25.2.7
    Background: Zerumbone (ZER) is a major bioactive compound of Zingiber zerumbet, a wild ginger plant that has been documented to have anti-proliferative, anti-inflammatory and anti-oxidant properties. To investigate its hepatoprotective potential, this study was designed to determine the treatment effects of ZER on acute hepatotoxicity induced by paracetamol (PCM) in rats.

    Methods: The control group was administered with phosphate buffer solution (PBS) while the other two groups received PCM alone (1000 mg/kg) and PCM + 25 mg/kg ZER, respectively, at 0 h and 4 h after PCM injection. After 24 h, the blood and liver were collected for differential white blood cell count, liver histological observation and biochemical analysis including alanine aminotransferase (ALT), aspartate aminotransferase (AST), and total protein concentration in serum and liver.

    Results: Treatment with ZER was found to significantly reduce ALT (P = 0.041), AST (P = 0.044) and total hepatic protein (P = 0.045) in comparison to PCM-induced rats. Rats treated with ZER exhibited the normal structure of hepatocytes with no vacuolisation or necrosis and showed significantly reduced neutrophil count (P = 0.037). This finding suggests its ability to suppress the inflammatory processes caused by PCM overdosage and decrease the hepatocytes tendency to go through necrotic processes.

    Conclusion: ZER possessed protective activity against PCM-induced acute hepatotoxicity in a rat model.

    Matched MeSH terms: Acetaminophen
  9. Effect of aqueous extract of Dicranopteris linearis leaves against paracetamol and carbon tetrachloride-induced liver toxicity in rats
    Ismail NA, Shamsahal-Din NS, Mamat SS, Zabidi Z, Wan Zainulddin WN, Kamisan FH, et al.
    Pak J Pharm Sci, 2014 Jul;27(4):831-5.
    PMID: 25015448
    The present study aimed to determine the hepatoprotective activity of Dicranopteris linearis L. (family Gleicheniaceae) leaf aqueous extract (DLAE) using two models of liver injury in rats. Rats were divided into ten groups (n=6) and received dH2O (negative control), 200 mg/kg silymarin (positive control) or DLAE (50, 250 and 500 mg/kg) orally once daily for 7 consecutive days and on the 8th day subjected to the hepatotoxic induction either using carbon tetrachloride (CCl4) or paracetamol (PCM). The bloods and livers were collected and subjected to biochemical and microscopical analysis. From the data obtained, only the highest dose of DLAE significantly (P<0.05) reduced the ALP, ALT and AST levels in CCl4-and PCM-induced hepatotoxic rats while the other doses caused significant (P<0.05) reduction only in the levels of ALT and AST. The histological results obtained were in line with the biochemical analysis wherein reduction in the CCl4- and PCM-induced tissue formation of necrosis, steatosis and inflammation occurred in a dose-dependent manner. In conclusion, the DLAE possesses hepatoprotective activity, which could be attributed to its free radicals scavenging and antioxidant activities, and high flavonoids content. Thus, in-depth studies regarding the hepatoprotective activity of DLAE are warranted.
    Matched MeSH terms: Acetaminophen/toxicity*
  10. Fulltext Histopathological study of the hepatic and renal toxicity associated with the co-administration of imatinib and acetaminophen in a preclinical mouse model
    Nassar I, Pasupati T, Judson JP, Segarra I
    Malays J Pathol, 2010 Jun;32(1):1-11.
    PMID: 20614720 MyJurnal
    Imatinib, a selective tyrosine kinase inhibitor, is the first line treatment against chronic myelogenous leukaemia (CML) and gastrointestinal stromal tumors (GIST). Several fatal cases have been associated with imatinib hepatotoxicity. Acetaminophen, an over-the-counter analgesic, anti-pyretic drug, which can cause hepatotoxicity, is commonly used in cancer pain management. We assessed renal and hepatic toxicity after imatinib and acetaminophen co-administration in a preclinical model. Four groups of male ICR mice (30-35 g) were fasted overnight and administered either saline solution orally (baseline control), imatinib 100 mg/kg orally (control), acetaminophen 700 mg/kg intraperitoneally (positive control) or co-administered imatinib 100 mg/kg orally and acetaminophen 700 mg/kg intraperitoneally (study group), and sacrificed at 15 min, 30 min, 1 h, 2 h, 4 h and 6 h post-administration (n = 4 per time point). The liver and kidneys were harvested for histopathology assessment. The liver showed reversible cell damage like feathery degeneration, microvesicular fatty change, sinusoidal congestion and pyknosis, when imatinib or acetaminophen were administered separately. The damage increased gradually with time, peaked at 2 h but resolved by 4 h. When both drugs were administered concurrently, the liver showed irreversible damage (cytolysis, karyolysis and karyorrhexis) which did not resolve by 6 h. Very minor renal changes were observed. Acetaminophen and imatinib co-administration increased hepatoxicity which become irreversible, probably due to shared P450 biotransformation pathways and transporters in the liver.
    Matched MeSH terms: Acetaminophen/toxicity*
  11. N-acetylcysteine-induced headache in hospitalized patients with acute acetaminophen overdose
    Zyoud SH, Awang R, Sulaiman SA, Al-Jabi SW
    Fundam Clin Pharmacol, 2011 Jun;25(3):405-10.
    PMID: 20584210 DOI: 10.1111/j.1472-8206.2010.00831.x
    Intravenous N-acetylcysteine (IV-NAC) is usually regarded as a safe antidote to acetaminophen overdose. However, during infusion of the loading dose, adverse drug reactions such as a headache may occur. The objectives of this study were to investigate the prevalence of headache in patients presenting to hospital after acetaminophen overdose and to determine which clinical findings are most predictive of headache among these patients. This is a retrospective cohort study of hospital admissions for acute acetaminophen overdose that was conducted over a period of 4 years from January 1, 2005 to December 31, 2008. Demographic data, clinical characteristics, and predictors of headache were analyzed. spss 15 was used for data analysis. Two-hundred and fifty-five patients were studied; their mean age was 23.1 ± 1.6; 83.9% of them were women and 14.9% had a headache during hospitalization. Headache among patients was significantly associated with IV-NAC administration (P = 0.001), intentional ingestion of drug (P = 0.04), acetaminophen concentration above 'possible toxicity' treatment line (P = 0.04), a high acetaminophen concentration (P = 0.04), and a long hospital stay (P = 0.03). Multiple logistic regression showed a significant risk factor for headache in patients administered IV-NAC (P = 0.04). We recorded a high frequency of headache in patients with acute acetaminophen overdose in our geographical area. This study suggests that among those patients, the use of IV-NAC is associated with an increased risk of headache.
    Matched MeSH terms: Acetaminophen/poisoning*
  12. Hyperthermic effects of Durio zibethinus and its interaction with paracetamol
    Chua YA, Nurhaslina H, Gan SH
    Methods Find Exp Clin Pharmacol, 2008 Dec;30(10):739-43.
    PMID: 19271022 DOI: 10.1358/mf.2008.30.10.1316830
    Because durian (Durio zibethinus), which is known in Southeast Asia as "the king of fruits", is thought to have special body-warming properties, it should not be consumed with paracetamol due to a risk of toxic effects. The claim of warming properties, however, has not been scientifically proven. This study was conducted to investigate durian's hyperthermic effect and its toxicity when consumed together with paracetamol in rats. Five groups of rats (n=6) were fed with: 1) distilled water (4 ml/250 g), 2) homogenized durian (4 g/250 g), 3) paracetamol solution (2400 mg/kg), 4) durian (4 g/250 g) followed by paracetamol solution (2400 mg/kg), or 5) prazosin solution (15 mg/kg, pregavaged) followed 1 h later by durian (4 g/250 g) and paracetamol solution (2400 mg/kg). Rectal temperature, systolic blood pressure and serum alanine aminotransferase (ALT) levels were taken from each rat at baseline and after the various administrations at 1, 2 and 5 h. Our results showed that the body temperature of rats in the durian-treated group was not significantly elevated when compared to the control. However, there was a significant decrease in body temperature over time in animals from groups 4 and 5. We did not, however, observe a consistent pattern of blood pressure change. Serum chemical analysis for ALT also did not show any significant change in any of the groups. In conclusion, contrary to what some believe, even though durian was found to increase body temperature in some rats, this increment was not significant. Rats receiving the durian-paracetamol combination showed a significant drop in body temperature, which may explain the belief that the two mixtures are toxic. However, the exact mechanism of toxicity is still unknown.
    Matched MeSH terms: Acetaminophen/toxicity*
  13. Incidence of adverse drug reactions induced by N-acetylcysteine in patients with acetaminophen overdose
    Zyoud SH, Awang R, Syed Sulaiman SA, Sweileh WM, Al-Jabi SW
    Hum Exp Toxicol, 2010 Mar;29(3):153-60.
    PMID: 20071472 DOI: 10.1177/0960327109359642
    Intravenous N-acetylcysteine (IV-NAC) is widely recognized as the antidote of choice for acetaminophen overdose. However, its use is not without adverse drug reactions (ADR) that might affect therapeutic outcome or lead to treatment delay.
    Matched MeSH terms: Acetaminophen/poisoning*
  14. Evidences of hepatoprotective and antioxidant effect of Citrullus colocynthis fruits in paracetamol induced hepatotoxicity
    Vakiloddin S, Fuloria N, Fuloria S, Dhanaraj SA, Balaji K, Karupiah S
    Pak J Pharm Sci, 2015 May;28(3):951-7.
    PMID: 26004728
    The objective of present study was to explore the hepatoprotective and antioxidant profile of Citrullus colocynthis fruits. Hepatoprotective profile of methanolic extract of Citrullus colocynthis fruits (MECCF) was investigated on rats, which were made hepatotoxic using paracetamol. The antioxidant profile of MECCF was evaluated by conducting Catalase, Super oxide Dismutase, Lipid Peroxidation and Diphenyl Picryl Hydrazyl tests. During hepatoprotective investigation, the Paracetamol treated group II showed significant increase in total bilirubin (TB), serum glutamate oxaloacetate transaminase (SGOT), serum glutamate pyruvate transaminase (SGPT) and alkaline phosphatase (ALP) level. The results so obtained showed that pretreatment of rats with MECCF 300mg/kg p.o. decreases the elevated TB, SGOT, SGPT and ALP serum levels. Also, MECCF inhibitory profile was found comparable with toxicant group (Paracetamol 2g/kg, p.o.). The present study concludes that MECCF fruit possess significant hepatoprotective and antioxidant activity.
    Matched MeSH terms: Acetaminophen/toxicity*
  15. Analgesic nephropathy associated with paracetamol
    Segasothy M, Tong BK, Kamal A, Murad Z, Suleiman AB
    Aust N Z J Med, 1984 Feb;14(1):23-6.
    PMID: 6590001
    Seven cases of analgesic nephropathy due to excessive ingestion of paracetamol are reported. None of these patients had been taking any other analgesic. All had radiological features of papillary necrosis. With the increasing use of paracetamol as a mild analgesic it is necessary to be aware of the possibility that paracetamol may induce analgesic nephropathy.
    Matched MeSH terms: Acetaminophen/adverse effects*
  16. Paracetamol: a cause for analgesic nephropathy and end-stage renal disease
    Segasothy M, Suleiman AB, Puvaneswary M, Rohana A
    Nephron, 1988;50(1):50-4.
    PMID: 3050572
    180 patients with end-stage renal disease (ESRD) on maintenance dialysis and those who had undergone renal transplantation were questioned retrospectively. 14 patients had consumed excessive quantities of analgesics (greater than 1 kg) prior to the institution of long-term dialysis or transplantation. Sonographic examination done on these patients indicated that 7 had renal papillary necrosis (RPN). The sonographic features were renal papillary calcifications surrounding the central sinus in a complete or incomplete garland pattern. In 5 of these patients RPN is attibutable to the excessive consumption of paracetamol. We have earlier reported 10 cases of RPN due to excessive consumption of paracetamol. Thus 15 cases of RPN attributable to paracetamol consumption (1.0-15.3 kg over a period ranging from 3 to 23 years) have been documented. It is concluded that paracetamol may assume an increasingly important role in the causation of analgesic nephropathy (AN) and ESRD.
    Matched MeSH terms: Acetaminophen/adverse effects*
  17. Fulltext Further evidence of analgesic nephropathy in Malaysia
    Segasothy M, Cheong I, Kong BC, Suleiman AB, Morad Z
    Med J Malaysia, 1986 Dec;41(4):377-9.
    PMID: 3670164
    In a prospective study performed on patients admitted to the medical and renal wards of General Hospital, Kuala Lumpur, over a period of 14 months from January 1982, we documented 12 new cases of analgesic nephropathy (AN). Since then up to July 1986, we have documented a further 16 cases of AN giving a total of 28 cases over a four-and-a-half-year period.
    Matched MeSH terms: Acetaminophen/adverse effects
  18. Fulltext Hepatoprotective and antioxidant activities of Dicranopteris linearis leaf extract against paracetamol-induced liver intoxication in rats
    Zakaria ZA, Kamisan FH, Kek TL, Salleh MZ
    Pharm Biol, 2020 Dec;58(1):478-489.
    PMID: 32476526 DOI: 10.1080/13880209.2020.1764058
    Context:Dicranopteris linearis L. (Gleicheniaceae) leaves have been reported to exert hepatoprotective activity.Objective: The hepatoprotective and antioxidant effects of ethyl acetate partition of D. linearis (EADL) are investigated.Materials and methods: EADL was subjected to antioxidant and anti-inflammatory studies, and phytochemical analyses. In vivo study involved six groups (n = 6) of overnight fasted Sprague Dawley rats. The test solutions [10% DMSO (normal), 10% DMSO (negative), 200 mg/kg silymarin (positive) or EADL (50, 250 or 500 mg/kg)] were administered orally once daily for 7 consecutive days followed by oral vehicle (only for normal) or hepatotoxic induction using 3 g/kg paracetamol (PCM).Results: EADL exerted ≈ 90% radical scavenging effects based on the DPPH and superoxide anion radical scavenging assays, high antioxidant capacity in the oxygen radical absorbance capacity assay (≈ 555,000 units), high total phenolic content (≈ 350 mg GAE/100 g extract) (p 
    Matched MeSH terms: Acetaminophen/toxicity*
  19. A cross sectional study on assessing the knowledge, attitude and perception towards allergic reactions of paracetamol in Malaysia
    Dellemin NA, Zahari Z, Ahmad Hassali MA, Rashid SA
    Pak J Pharm Sci, 2020 May;33(3):1057-1061.
    PMID: 33191229
    Recent years, the prevalence of paracetamol allergy becomes great concerns. However, data on knowledge, attitude and perception towards allergic reactions of paracetamol are lacking. This study aimed to investigate knowledge, attitude, and perception towards allergic reactions of paracetamol (KAP-ARP). A cross-sectional survey was conducted using a validated self-administered questionnaire around Pasar Siti Khadijah, Kelantan from February 2016 to January 2017 among the general population. A total of 177 respondents participated in this study. The mean percentage scores for knowledge, attitude and perception towards allergic reactions of paracetamol were 31.7% (SD 23.6), 53.1% (SD 19.2) and 53.3% (SD 23.9), respectively. This study revealed that respondents demonstrated a poor level of knowledge, a fair level of attitude and negative perception towards allergic reactions of paracetamol. These results may lay a basis for conducting a study of knowledge, attitude and perception towards allergic reactions among general population in other different setting or around Malaysia.
    Matched MeSH terms: Acetaminophen/adverse effects*
  20. The effect of various drugs on the glucuronidation of zidovudine (azidothymidine; AZT) by human liver microsomes
    Sim SM, Back DJ, Breckenridge AM
    Br J Clin Pharmacol, 1991 Jul;32(1):17-21.
    PMID: 1909542
    1. Zidovudine (3'-azido-3'-deoxythymidine; AZT) is the drug of proven efficacy available for the treatment of patients with AIDS or ARC. It is eliminated mainly by hepatic glucuronidation. Therefore, interference with this metabolic pathway may lead to enhancement of AZT effect or to increased toxicity of the drug. We have examined the effect of a number of drugs which themselves undergo glucuronidation on AZT conjugation by human liver microsomes in vitro. 2. AZT glucuronidation followed Michaelis-Menten kinetics. The apparent Km and Vmax values (mean +/- s.d., n = 5), were 2.60 +/- 0.52 mM and 68.0 +/- 23.4 nmol h-1 mg-1, respectively, as determined from Eadie-Hofstee plots. 3. Dideoxyinosine, sulphanilamide and paracetamol were essentially non-inhibitory at concentrations up to 10 mM (4 times the concentration of AZT in the incubation). The most marked inhibitory effects were seen with indomethacin, naproxen, chloramphenicol, probenecid and ethinyloestradiol, with enzyme activity decreased by 97.7, 94.9, 88.7, 83.4% and 79.0%, respectively, at a concentration of 10 mM. Other compounds producing some inhibition of AZT conjugation were oxazepam, salicylic acid and acetylsalicylic acid. 4. Further studies are necessary to characterise the inhibition observed but the method described enables a screen of potentially important drug interactions to be carried out.
    Matched MeSH terms: Acetaminophen/pharmacology
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