1
|
Kwak SB, Kim SJ, Kang YJ, Lee WW, Huh J, Park JW. Development of a rectally administrable Dnase1 to treat septic shock by targeting NETs. Life Sci 2024; 342:122526. [PMID: 38417543 DOI: 10.1016/j.lfs.2024.122526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 02/11/2024] [Accepted: 02/21/2024] [Indexed: 03/01/2024]
Abstract
AIMS Neutrophil extracellular trap (NET), which is formed by DNA threads, induces septic shock by aggravating systemic inflammation. An intravenous administration of deoxyribonuclease is regarded as a compelling modality for treating septic shock. However, alternative routes should be chosen when cutaneous veins are all collapsed due to hypotension. In this study, we genetically engineered this enzyme to develop a rectal suppository formulation to treat septic shock. MAIN METHODS Dnase1 was mutated at two amino acid residues to increase its stability in the blood and fused with a cell-penetrating peptide CR8 to increase its absorption through the rectal mucosa, which is designated AR-CR8. The life-saving effect of AR-CR8 was evaluated in a LPS-induced shock mouse model. KEY FINDINGS AR-CR8 was shown to remove NETs effectively in human neutrophils. When AR-CR8 was administered to the mouse rectum, the deoxyribonuclease activity in the mouse serum was significantly increased. In the LPS-induced shock model, 90 % of the control mice died over 72 h after LPS injection. In contrast, the rectal administration of AR-CR8 showed a mortality rate of 30 % by 72 h after LPS injection. The Log-rank test revealed that the survival rate is significantly higher in the AR-CR8 group. The NET markers in the mouse serum were enhanced by LPS, and significantly downregulated in the AR-CR8 group. These results suggest that AR-CR8 ameliorates LPS-induced shock by degrading NETs. SIGNIFICANCE The engineered DNASE1 could be developed as a rectal suppository formulation to treat septic shock urgently at out-of-hospital places where no syringe is available.
Collapse
Affiliation(s)
- Su-Bin Kwak
- Department of Pharmacology, Seoul National University College of Medicine, Daehak-ro 103, Jongno-gu, Seoul 03080, Republic of Korea
| | - Sang-Jin Kim
- Department of Pharmacology, Seoul National University College of Medicine, Daehak-ro 103, Jongno-gu, Seoul 03080, Republic of Korea
| | - Yeon Jun Kang
- Laboratory of Autoimmunity and Inflammation, Department of Biomedical Sciences, Seoul National University College of Medicine, Daehak-ro 103, Jongno-gu, Seoul 03080, Republic of Korea; Department of Microbiology and Immunology, Seoul National University College of Medicine, Daehak-ro 103, Jongno-gu, Seoul 03080, Republic of Korea
| | - Won-Woo Lee
- Laboratory of Autoimmunity and Inflammation, Department of Biomedical Sciences, Seoul National University College of Medicine, Daehak-ro 103, Jongno-gu, Seoul 03080, Republic of Korea; Department of Microbiology and Immunology, Seoul National University College of Medicine, Daehak-ro 103, Jongno-gu, Seoul 03080, Republic of Korea
| | - June Huh
- Department of Chemical and Biological Engineering, Korea University, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Jong-Wan Park
- Department of Pharmacology, Seoul National University College of Medicine, Daehak-ro 103, Jongno-gu, Seoul 03080, Republic of Korea; Department of Biomedical Science, BK21-plus education program, Seoul National University College of Medicine, Daehak-ro 103, Jongno-gu, Seoul 03080, Republic of Korea; Cancer Research Institute and Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Daehak-ro 103, Jongno-gu, Seoul 03080, Republic of Korea.
| |
Collapse
|
2
|
Tantivit N, Thangjui S, Trongtorsak A. Antipyretic Effectiveness of Oral Acetaminophen Versus Rectal Acetaminophen in Pediatric Patients With Fever. Hosp Pediatr 2022; 12:e201-e207. [PMID: 35634881 DOI: 10.1542/hpeds.2021-006377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
BACKGROUND AND OBJECTIVE Acetaminophen, one of the routine medicines used for temperature reduction in febrile children, is available in multiple routes of administration, including oral and rectal routes. Our objective is to compare the antipyretic effectiveness of oral acetaminophen versus rectal acetaminophen in pediatric patients with fever in terms of temperature reduction. METHODS Medline and Embase databases were searched from inception to August 2021. Cohort studies, case-control studies, experimental studies, and randomized controlled trial studies comparing oral and rectal administered acetaminophen in pediatric patients were included. Two reviewers independently extracted data. RESULTS A total of 5 randomized studies (n = 362) were included in the meta-analysis. No significant difference was found between oral and rectal acetaminophen in temperature reduction at 1 hour (weighted mean difference [WMD], 0.04°C; 95% confidence interval [CI], -0.10°C to 0.19°C; P = .501) or 3 hours (WMD, -0.14°C; 95% CI, -0.37°C to 0.10°C; P = .212) after administration (WMD, -0.14°C; 95% CI, -0.37°C to 0.10°C; P = .212). CONCLUSION Oral and rectal acetaminophen have no significant difference in antipyretic effectiveness at 1 and 3 hours after administration. If both options are available, oral acetaminophen would be preferred because of a more predictable drug level after administration. However, for febrile children with specific circumstances for whom oral acetaminophen could not be administered, rectal acetaminophen may be an alternative option for a short period of time (<48 hours).
Collapse
Affiliation(s)
- Nessa Tantivit
- Department of Pediatrics, University of South Alabama, Mobile, Alabama
| | - Sittinun Thangjui
- Department of Internal Medicine, Bassett Healthcare Center, Cooperstown, New York
| | - Angkawipa Trongtorsak
- Department of Internal Medicine, AMITA Health Saint Francis Hospital, Evanston, Illinois
| |
Collapse
|
3
|
Green R, Webb D, Jeena PM, Wells M, Butt N, Hangoma JM, Moodley R(S, Maimin J, Wibbelink M, Mustafa F. Management of acute fever in children: Consensus recommendations for community and primary healthcare providers in sub-Saharan Africa. Afr J Emerg Med 2021; 11:283-296. [PMID: 33912381 PMCID: PMC8063696 DOI: 10.1016/j.afjem.2020.11.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 11/08/2020] [Accepted: 11/15/2020] [Indexed: 12/24/2022] Open
Abstract
Fever is one of the most common reasons for unwell children presenting to pharmacists and primary healthcare practitioners. Currently there are no guidelines for assessment and management of fever specifically for community and primary healthcare workers in the sub-Saharan Africa region. This multidisciplinary consensus guide was developed to assist pharmacists and primary healthcare workers in sub-Saharan Africa to risk stratify and manage children who present with fever, decide when to refer, and how to advise parents and caregivers. Fever is defined as body temperature ≥ 37.5 °C and is a normal physiological response to illness that facilitates and accelerates recovery. Although it is often associated with self-limiting illness, it causes significant concern to both parents and attending healthcare workers. Clinical signs may be used by pharmacy staff and primary healthcare workers to determine level of distress and to distinguish between a child with fever who is at high risk of serious illness and who requires specific treatment, hospitalisation or specialist care, and those at low risk who could be managed conservatively at home. In children with warning signs, serious causes of fever that may need to be excluded include infections (including malaria), non-infective inflammatory conditions and malignancy. Simple febrile convulsions are not in themselves harmful, and are not necessarily indicative of serious infection. In the absence of illness requiring specific treatment, relief from distress is the primary indication for prescribing pharmacotherapy, and antipyretics should not be administered with the sole intention of reducing body temperature. Care must be taken not to overdose medications and clear instructions should be given to parents/caregivers on managing the child at home and when to seek further medical care.
Collapse
Affiliation(s)
- Robin Green
- Department Paediatrics and Child Health, University of Pretoria, South Africa
| | - David Webb
- Houghton House Group, Johannesburg, South Africa
| | - Prakash Mohan Jeena
- Department of Paediatrics & Child Health, University of KwaZulu Natal, Durban, South Africa
| | - Mike Wells
- Division of Emergency Medicine, University of the Witwatersrand, Johannesburg, South Africa
| | | | | | | | - Jackie Maimin
- South African Pharmacy Council, Johannesburg, South Africa
| | | | - Fatima Mustafa
- Steve Biko Academic Hospital, Department of Paediatrics and Child Health, University of Pretoria, South Africa
| |
Collapse
|
4
|
Okereke B, Ibeleme O, Bisi-Onyemaechi A. Randomised comparative trial of the efficacy of paracetamol syrup and dispersible tablets for the treatment of fever in children. J Int Med Res 2021; 49:300060521999755. [PMID: 33736533 PMCID: PMC7985941 DOI: 10.1177/0300060521999755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Objective Fever is the most common reason for the presentation of children in the
outpatient department. Paracetamol is marketed in different formulations for
ease of administration to the paediatric population. These include syrups,
dispersible tablets and rectal inserts. Dispersible tablets disintegrate
rapidly in liquid and are subsequently taken orally, providing another oral
formulation. We determined if there is a difference in the antipyretic
efficacy of the syrup and the dispersible formulation of paracetamol,
thereby prompting the development of the latter (another oral formulation)
for use in children. Methods A randomised, controlled, double-blind intervention of a single dose of both
formulations was given to febrile children, and their temperatures were
documented twice in 30-minute intervals. Temperature changes were compared
statistically. Results The mean temperatures at recruitment were 38.2 ± 0.5°C and 38.3 ± 0.6°C for
the dispersible and syrup group, respectively. There was no significant
difference between the temperature changes at T2 (30 minutes) and T3 (60
minutes) between the two study arms. However, the temperature was
significantly different at T1 (baseline), T2 and T3 within the dispersible
and syrup groups. Conclusion The decreasing trend in temperature was similar in both groups. Both
preparations produced statistically similar antipyretic effects with no
reported adverse drug reaction.
Collapse
Affiliation(s)
- Benjamin Okereke
- College of Medicine, University of Nigeria Ituku-Ozalla Campus, Enugu, Nigeria
| | - Okezie Ibeleme
- College of Medicine, University of Nigeria Ituku-Ozalla Campus, Enugu, Nigeria
| | - Adaobi Bisi-Onyemaechi
- Department of Paediatrics, College of Medicine, University of Nigeria Ituku-Ozalla Campus, Enugu Nigeria
| |
Collapse
|
5
|
Ayoub SS. Paracetamol (acetaminophen): A familiar drug with an unexplained mechanism of action. Temperature (Austin) 2021; 8:351-371. [PMID: 34901318 PMCID: PMC8654482 DOI: 10.1080/23328940.2021.1886392] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/26/2021] [Accepted: 02/01/2021] [Indexed: 02/02/2023] Open
Abstract
Paracetamol (acetaminophen) is undoubtedly one of the most widely used drugs worldwide. As an over-the-counter medication, paracetamol is the standard and first-line treatment for fever and acute pain and is believed to remain so for many years to come. Despite being in clinical use for over a century, the precise mechanism of action of this familiar drug remains a mystery. The oldest and most prevailing theory on the mechanism of analgesic and antipyretic actions of paracetamol relates to the inhibition of CNS cyclooxygenase (COX) enzyme activities, with conflicting views on the COX isoenzyme/variant targeted by paracetamol and on the nature of the molecular interactions with these enzymes. Paracetamol has been proposed to selectively inhibit COX-2 by working as a reducing agent, despite the fact that in vitro screens demonstrate low potency on the inhibition of COX-1 and COX-2. In vivo data from COX-1 transgenic mice suggest that paracetamol works through inhibition of a COX-1 variant enzyme to mediate its analgesic and particularly thermoregulatory actions (antipyresis and hypothermia). A separate line of research provides evidence on potentiation of the descending inhibitory serotonergic pathway to mediate the analgesic action of paracetamol, but with no evidence of binding to serotonergic molecules. AM404 as a metabolite for paracetamol has been proposed to activate the endocannabinoid and the transient receptor potential vanilloid-1 (TRPV1) systems. The current review gives an update and in some cases challenges the different theories on the pharmacology of paracetamol and raises questions on some of the inadequately explored actions of paracetamol. List of Abbreviations: AM404, N-(4-hydroxyphenyl)-arachidonamide; CB1R, Cannabinoid receptor-1; Cmax, Maximum concentration; CNS, Central nervous system; COX, Cyclooxygenase; CSF, Cerebrospinal fluid; ED50, 50% of maximal effective dose; FAAH, Fatty acid amidohydrolase; IC50, 50% of the maximal inhibitor concentration; LPS, Lipopolysaccharide; NSAIDs, Non-steroidal anti-inflammatory drugs; PGE2, Prostaglandin E2; TRPV1, Transient receptor potential vanilloid-1.
Collapse
Affiliation(s)
- Samir S Ayoub
- School of Health, Sport and Bioscience, Medicines Research Group, University of East London, London, UK
| |
Collapse
|
6
|
Shojaeian R, Alizadeh Ghamsari A, Mohammadipour A, Afshari R, Vakili R, Hiradfar M. Bioavailability of rectal acetaminophen in children following anorectal surgery. J Pediatr Surg 2021; 56:490-493. [PMID: 32732164 DOI: 10.1016/j.jpedsurg.2020.06.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/07/2020] [Accepted: 06/18/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND Acetaminophen is widely used as an analgesic and antipyretic agent in pediatrics. Although bioavailability of rectal acetaminophen is unpredictable, rectal route is a usual and acceptable method of prescription. Major anorectal surgery may alter the normal structure of the surgical site, especially the vascular elements and the normal connections between port and systemic vessels. As a result the pharmacokinetics of rectal medications might also be altered. Based on this hypothesis, we decided to study acetaminophen plasma concentration among children who underwent these types of surgeries to determine the pharmacokinetic of absorption, plasma concentration, safety, and efficacy of rectal acetaminophen. MATERIALS AND METHODS The study included 20 cases with previous history of pull-through procedure owing to Hirschsprung's disease (HD), 20 cases with imperforate anus (IA) reconstructive surgeries who were admitted for colostomy closure, and 20 otherwise healthy cases of inguinal herniotomy. Venus blood sampling was done 4, 8 and 12 hrs after a single loading dose of rectal acetaminophen (40 mg/kg), and plasma acetaminophen concentration was compared between groups. RESULTS Mean serum acetaminophen levels of the HD group were significantly higher than those of the herniotomy group (36.3 ± 6.79, 27.4 ± 8.42, 16.8 ± 7.62 versus 25.9 ± 9.12, 16.7 ± 6.74, 8.1 ± 5.79 (μg/ml) at 4, 8 and 12 hrs after drug administration and P < 0.05). The IA group had higher concentrations of plasma acetaminophen compared to the herniotomy group; however, the p values were not statistically significant. (31.4 ± 10.39, 21.5 ± 9.12, 13.3 ± 6.79 versus 25.9 ± 9.12, 16.7 ± 6.74, 8.1 ± 5.79 (μg/ml) at 4, 8 and 12 hrs after drug administration). Serum concentrations of acetaminophen in IA and HD patients were above the therapeutic range four hours after administering the loading dose (31.4 ± 10.39 and 36.3 ± 6.79 versus 5-20 μg/ml). CONCLUSION Bioavailability of rectal acetaminophen might get altered after major anorectal surgery in children. Rectal acetaminophen should be administered with special caution among infants with history of anorectal operations. Repeated dose of rectal acetaminophen may cause the drug blood concentration to reach toxic levels in these patients. TYPE OF STUDY Prospective comparative study. LEVEL OF EVIDENCE Level II.
Collapse
|
7
|
Sharif MR, Haji Rezaei M, Aalinezhad M, Sarami G, Rangraz M. Rectal Diclofenac Versus Rectal Paracetamol: Comparison of Antipyretic Effectiveness in Children. IRANIAN RED CRESCENT MEDICAL JOURNAL 2016; 18:e27932. [PMID: 26889398 PMCID: PMC4753024 DOI: 10.5812/ircmj.27932] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 07/01/2015] [Accepted: 07/28/2015] [Indexed: 01/03/2023]
Abstract
Background Fever is the most common complaint in pediatric medicine and its treatment is
recommended in some situations. Paracetamol is the most common antipyretic drug, which
has serious side effects such as toxicity along with its positive effects. Diclofenac is
one of the strongest non-steroidal anti-inflammatory (NSAID) drugs, which has received
little attention as an antipyretic drug. Objectives This study was designed to compare the antipyretic effectiveness of the rectal form of
Paracetamol and Diclofenac. Patients and Methods This double-blind controlled clinical trial was conducted on 80 children aged six
months to six years old. One group was treated with rectal Paracetamol suppositories at
15 mg/kg dose and the other group received Diclofenac at 1 mg/kg by rectal
administration (n = 40). Rectal temperature was measured before and one hour after the
intervention. Temperature changes in the two groups were compared. Results The average rectal temperature in the Paracetamol group was 39.6 ± 1.13°C,
and 39.82 ± 1.07°C in the Diclofenac group (P = 0.37). The average rectal
temperature, one hour after the intervention, in the Paracetamol and the Diclofenac
group was 38.39 ± 0.89°C and 38.95 ± 1.09°C, respectively (P =
0.02). Average temperature changes were 0.65 ± 0.17°C in the Paracetamol group
and 1.73 ± 0.69°C in the Diclofenac group (P < 0.001). Conclusions In the first one hour, Diclofenac suppository is able to control the fever more
efficient than Paracetamol suppositories.
Collapse
Affiliation(s)
- Mohammad Reza Sharif
- Autoimmune Diseases Research Center, Kashan University of
Medical Sciences, Kashan, IR Iran
- Trauma Research Center, Kashan University of Medical
Sciences, Kashan, IR Iran
| | - Mostafa Haji Rezaei
- Trauma Research Center, Kashan University of Medical
Sciences, Kashan, IR Iran
| | - Marzieh Aalinezhad
- Department of Radiology, Isfahan University of Medical
Sciences, Isfahan, IR Iran
- Medical Student Research Center, Isfahan University of
Medical Sciences, Isfahan, IR Iran
| | - Golbahareh Sarami
- Department of Pediatrcis, Kashan University of Medical
Sciences, Kashan, IR Iran
| | - Masoud Rangraz
- Department of Pediatrcis, Kashan University of Medical
Sciences, Kashan, IR Iran
- Corresponding Author: Masoud Rangraz, Department of
Pediatrcis, Kashan University of Medical Sciences, Kashan, IR Iran. Tel: +98-3155540021,
Fax: +98-3155540111, E-mail:
| |
Collapse
|
8
|
Marzuillo P, Guarino S, Barbi E. Paracetamol: a focus for the general pediatrician. Eur J Pediatr 2014; 173:415-25. [PMID: 24374658 DOI: 10.1007/s00431-013-2239-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 12/05/2013] [Indexed: 02/02/2023]
Abstract
UNLABELLED Paracetamol (acetaminophen) is one of the most popular and widely used drugs for the treatment of pain and fever in children. This drug has multiple mechanisms of action, but its pharmacodynamic is still not well known. The central nervous system is the main site of action and it mirrors the paracetamol effect compartment. The recommended dosages and routes of administration should be different whether paracetamol is used for the treatment of pain or fever. For example, the rectal route, while being efficacious for the treatment of fever, should be avoided in pain management. Paracetamol is a safe drug, but some clinical conditions and concomitant drugs, which are frequent in clinical practice, may increase the risk of paracetamol toxicity. Therefore, it is important to optimize its administration to avoid overdoses and maximize its effect. The principal mediator of the paracetamol toxicity is the N-acetyl-p-benzo-quinone imine (NAPQI), a toxic product of the paracetamol metabolism, which could bind cysteine groups on proteins forming paracetamol-protein adduct in the liver. CONCLUSION Although frequently prescribed, the concept of "effect compartment concentration" and the possible co-factors that could cause toxicity at recommended doses are not familiar to all pediatricians and general practitioners. We reviewed the literature concerning paracetamol mechanisms of action, we highlighted some relevant pharmacodynamic concepts for clinical practice, and we summarized the possible risk factors for toxicity at therapeutic dosages.
Collapse
Affiliation(s)
- Pierluigi Marzuillo
- Department of Women and Children and General and Specialized Surgery, Seconda Università degli Studi di Napoli, Via L. De Crecchio 2, 80138, Naples, Italy,
| | | | | |
Collapse
|
9
|
Comparison of High Loading Dose Versus Usual Dose of Rectal Acetaminophen in the Treatment of Febrile Children. ARCHIVES OF PEDIATRIC INFECTIOUS DISEASES 2013. [DOI: 10.5812/pedinfect.10350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
10
|
Demir F, Sekreter O. Knowledge, attitudes and misconceptions of primary care physicians regarding fever in children: a cross sectional study. Ital J Pediatr 2012; 38:40. [PMID: 22950655 PMCID: PMC3481471 DOI: 10.1186/1824-7288-38-40] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Accepted: 08/28/2012] [Indexed: 11/25/2022] Open
Abstract
Background Fever is an extremely common sign in paediatric patients and the most common cause for a child to be taken to the doctor. The literature indicates that physicians and parents have too many misconceptions and conflicting results about fever management. In this study we aim to identify knowledge, attitudes and misconceptions of primary care physicians regarding fever in children. Methods This cross-sectional study was conducted in April-May 2010 involving primary care physicians (n=80). The physicians were surveyed using a self-administered questionnaire. Descriptive statistics were used. Results In our study only 10% of the physicians knew that a body temperature of above 37.2°C according to an auxiliary measurement is defined as fever. Only 26.2% of the physicians took into consideration signs and symptoms other than fever to prescribe antipyretics. 85% of the physicians prescribed antipyretics to control fever or prevent complications of fever especially febrile seizures. Most of the physicians (76.3%) in this study reported that the height of fever may be used as an indicator for severe bacterial infection. A great majority of physicians (91.3%) stated that they advised parents to alternate the use of ibuprofen and paracetamol. Conclusions There were misconceptions about the management and complications of fever. There is a perceived need to improve the recognition, assessment, and management of fever with regards to underlying illnesses in children.
Collapse
Affiliation(s)
- Figen Demir
- Department of Public Health, Acıbadem University School of Medicine, Gülsuyu Mah, Fevzi Çakmak Cad, Divan Sok, No 1, Maltepe/İSTANBUL, Turkey.
| | | |
Collapse
|
11
|
Viljoen J, Bergh JJ, Mienie LJ, Kotze HF, Terre'Blanche G. Paracetamol prevents hyperglycinemia in vervet monkeys treated with valproate. Metab Brain Dis 2012; 27:327-35. [PMID: 22350964 DOI: 10.1007/s11011-012-9285-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Accepted: 02/07/2012] [Indexed: 10/28/2022]
Abstract
Valproate administration increases the level of the inhibitory transmitter, glycine, in the urine and plasma of patients and experimental animals. Nonketotic hyperglycinemia (NKH), an autosomal recessive disorder of glycine metabolism, causes increased glycine concentrations in blood, urine, and cerebrospinal fluid (CSF), most likely due to a defect in the glycine cleavage enzyme or possibly deficits in glycine transport across cell membranes. We investigated the relationship between the hyperglycinemic effect of valproate and induced pyroglutamic aciduria via paracetamol in the vervet monkey. Firstly it was determined if valproate could induce hyperglycinemia in the monkey. The second aim was to increase glutamic acid (oxoproline) urine excretion using paracetamol as a pre-treatment and to assess whether valproate has an influence on the γ-glutamyl cycle. Hyperglycinemia was induced in healthy vervet monkeys when treated with a single oral dose of 50 mg/kg valproate. An acute dose of 50 mg/kg paracetamol increased oxoproline in the urine. Pre-treatment with paracetamol opposed the hyperglycinemic effect of valproate. However, the CSF:serum glycine ratio in a nonketotic monkey increased markedly after paracetamol treatment and remained high following valproate treatment. These results indicate that the γ-glutamyl cycle does indeed play a role in the hyperglycinemic effect of valproate treatment, and that paracetamol may have value in preventing and/or treating valproate-induced NKH.
Collapse
Affiliation(s)
- Jacques Viljoen
- Pharmaceutical Chemistry, Unit for Drug Research and Development, School of Pharmacy, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa
| | | | | | | | | |
Collapse
|
12
|
Abstract
Fever in a child is one of the most common clinical symptoms managed by pediatricians and other health care providers and a frequent cause of parental concern. Many parents administer antipyretics even when there is minimal or no fever, because they are concerned that the child must maintain a "normal" temperature. Fever, however, is not the primary illness but is a physiologic mechanism that has beneficial effects in fighting infection. There is no evidence that fever itself worsens the course of an illness or that it causes long-term neurologic complications. Thus, the primary goal of treating the febrile child should be to improve the child's overall comfort rather than focus on the normalization of body temperature. When counseling the parents or caregivers of a febrile child, the general well-being of the child, the importance of monitoring activity, observing for signs of serious illness, encouraging appropriate fluid intake, and the safe storage of antipyretics should be emphasized. Current evidence suggests that there is no substantial difference in the safety and effectiveness of acetaminophen and ibuprofen in the care of a generally healthy child with fever. There is evidence that combining these 2 products is more effective than the use of a single agent alone; however, there are concerns that combined treatment may be more complicated and contribute to the unsafe use of these drugs. Pediatricians should also promote patient safety by advocating for simplified formulations, dosing instructions, and dosing devices.
Collapse
|
13
|
Affiliation(s)
- Yong Sun Jeong
- Doctoral Candidate, Department of Nursing Science, Ewha Womans University, Seoul, Korea
| | - Jin Sun Kim
- Associate Professor, Department of Nursing, Chosun University, Gwangju, Korea
| |
Collapse
|
14
|
Chiappini E, Principi N, Longhi R, Tovo PA, Becherucci P, Bonsignori F, Esposito S, Festini F, Galli L, Lucchesi B, Mugelli A, de Martino M. Management of fever in children: summary of the Italian Pediatric Society guidelines. Clin Ther 2009; 31:1826-43. [PMID: 19808142 DOI: 10.1016/j.clinthera.2009.08.006] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2009] [Indexed: 11/28/2022]
Abstract
OBJECTIVE This article summarizes the Italian Pediatric Society guideline on the management of the signs and symptoms of fever in children, prepared as part of the National Guideline Program (NGLP). METHODS Relevant publications in English and Italian were identified through searches of MEDLINE and the Cochrane Database of Systematic Reviews from their inception through December 31, 2007. Based on the consensus of a multidisciplinary expert panel, the strength of the recommendations was categorized into 5 grades (A-E) according to NGLP methodology. SUMMARY In the health care setting, axillary measurement of body temperature using a digital thermometer is recommended in children aged <4 weeks; for children aged > or =4 weeks, axillary measurement using a digital thermometer or tympanic measurement using an infrared thermometer is recommended. When body temperature is measured at home by parents or care-givers, axillary measurement using a digital thermometer is recommended for all children. Children who are afebrile when seen by the clinician but are reported to have had fever by their caregivers should be considered febrile. In special circumstances, high fever may be a predictive factor for severe bacterial infection. Use of physical methods of reducing fever is discouraged, except in the case of hyperthermia. Use of antipyretics-paracetamol (acetaminophen) or ibuprofen-is recommended only when fever is associated with discomfort. Combined or alternating use of antipyretics is discouraged. The dose of antipyretic should be based on the child's weight rather than age. Whenever possible, oral administration of paracetamol is preferable to rectal administration. Use of ibuprofen is not recommended in febrile children with chickenpox or dehydration. Use of ibuprofen or paracetamol is not contraindicated in febrile children with asthma. There is insufficient evidence to form any recommendations concerning fever in children with other chronic conditions, but caution is advised in cases of severe hepatic/renal failure or severe malnutrition. Newborns with fever should always be hospitalized because of the elevated risk of severe disease; paracetamol may be used, with the dose adjusted to gestational age. Use of paracetamol or ibuprofen is not effective in preventing febrile convulsion or the adverse effects of vaccines.
Collapse
Affiliation(s)
- Elena Chiappini
- Department of Pediatrics, University of Florence, I-50139 Florence, Italy
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|