Displaying publications 1 - 20 of 425 in total

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  1. Low PH, Mangat MS, Liew DNS, Wong ASH
    World Neurosurg, 2020 12;144:e710-e713.
    PMID: 32949798 DOI: 10.1016/j.wneu.2020.09.045
    BACKGROUND: The novel coronavirus disease 2019 (COVID-19) pandemic has set a huge challenge to the delivery of neurosurgical services, including the transfer of patients. We aimed to share our strategy in handling neurosurgical emergencies at a remote center in Borneo island. Our objectives included discussing the logistic and geographic challenges faced during the COVID-19 pandemic.

    METHODS: Miri General Hospital is a remote center in Sarawak, Malaysia, serving a population with difficult access to neurosurgical services. Two neurosurgeons were stationed here on a rotational basis every fortnight during the pandemic to handle neurosurgical cases. Patients were triaged depending on their urgent needs for surgery or transfer to a neurosurgical center and managed accordingly. All patients were screened for potential risk of contracting COVID-19 prior to the surgery. Based on this, the level of personal protective equipment required for the health care workers involved was determined.

    RESULTS: During the initial 6 weeks of the Movement Control Order in Malaysia, there were 50 urgent neurosurgical consultations. Twenty patients (40%) required emergency surgery or intervention. There were 9 vascular (45%), 5 trauma (25%), 4 tumor (20%), and 2 hydrocephalus cases (10%). Eighteen patients were operated at Miri General Hospital, among whom 17 (94.4%) survived. Ninety percent of anticipated transfers were avoided. None of the medical staff acquired COVID-19.

    CONCLUSIONS: This framework allowed timely intervention for neurosurgical emergencies (within a safe limit), minimized transfer, and enabled uninterrupted neurosurgical services at a remote center with difficult access to neurosurgical care during a pandemic.

    Matched MeSH terms: Central Nervous System Vascular Malformations/surgery
  2. Veeramuthu V, Narayanan V, Ramli N, Hernowo A, Waran V, Bondi MW, et al.
    World Neurosurg, 2017 Jan;97:416-423.
    PMID: 27751922 DOI: 10.1016/j.wneu.2016.10.041
    OBJECTIVE: To compare the extent of persistent neuropsychological impairment in patients with complicated mild traumatic brain injury (mTBI) and those with uncomplicated mTBI.

    METHODS: Sixty-one patients with mTBI (Glasgow Coma Scale score 13-15) were recruited prospectively, categorized according to baseline computed tomography findings, and subjected to neuropsychological assessment at initial admission (n = 61) as well as at a 6-month follow-up (n = 30). The paired t test, Cohen's d effect size calculation, and repeated-measures analysis of variance were used to establish the differences between the 2 groups in terms of neuropsychological performance.

    RESULTS: A trend toward poorer neuropsychological performance among the patients with complicated mTBI was observed during admission; however, performance in this group improved over time. In contrast, the uncomplicated mTBI group showed slower recovery, especially in tasks of memory, visuospatial processing, and executive functions, at follow-up.

    CONCLUSIONS: Our findings suggest that despite the broad umbrella designation of mTBI, the current classification schemes of injury severity for mild neurotrauma should be revisited. They also raise questions about the clinical relevance of both traumatic focal lesions and the absence of visible traumatic lesions on brain imaging studies in patients with milder forms of head trauma.

    Matched MeSH terms: Nervous System Diseases/diagnosis; Nervous System Diseases/epidemiology*; Nervous System Diseases/psychology
  3. Chua AS
    World J Gastroenterol, 2006 May 07;12(17):2656-9.
    PMID: 16718748 DOI: 10.3748/wjg.v12.i17.2656
    Dyspepsia itself is not a diagnosis but stands for a constellation of symptoms referable to the upper gastrointestinal tract. It consists of a variable combination of symptoms including abdominal pain or discomfort, postprandial fullness, abdominal bloating, early satiety, nausea, vomiting, heartburn and acid regurgitation. Patients with heartburn and acid regurgitation invariably have gastroesophageal reflux disease and should be distinguished from those with dyspepsia. There is a substantial group of patients who do not have a definite structural or biochemical cause for their symptoms and are considered to be suffering from functional dyspepsia (FD). Gastrointestinal motor abnormalities, altered visceral sensation, dysfunctional central nervous system-enteral nervous system (CNS-ENS) integration and psychosocial factors have all being identified as important pathophysiological correlates. It can be considered as a biopsychosocial disorder with dysregulation of the brain-gut axis being central in origin of disease. FD can be categorized into different subgroups based on the predominant single symptom identified by the patient. This subgroup classification can assist us in deciding the appropriate symptomatic treatment for the patient.
    Matched MeSH terms: Central Nervous System/physiopathology; Enteric Nervous System/physiopathology
  4. Assi MA, Hezmee MN, Haron AW, Sabri MY, Rajion MA
    Vet World, 2016 Jun;9(6):660-71.
    PMID: 27397992 DOI: 10.14202/vetworld.2016.660-671
    Lead, a chemical element in the carbon group with symbol Pb (from Latin: Plumbum, meaning "the liquid silver") and has an atomic number 82 in the periodic table. It was the first element that was characterized by its kind of toxicity. In animal systems, lead (Pb) has been incriminated in a wide spectrum of toxic effects and it is considered one of the persistent ubiquitous heavy metals. Being exposed to this metal could lead to the change of testicular functions in human beings as well as in the wildlife. The lead poising is a real threat to the public health, especially in the developing countries. Accordingly, great efforts on the part of the occupational and public health have been taken to curb the dangers of this metal. Hematopoietic, renal, reproductive, and central nervous system are among the parts of the human body and systems that are vulnerable toward the dangers following exposure to high level of Pb. In this review, we discussed the massive harmful impact that leads acetate toxicity has on the animals and the worrying fact that this harmful toxicant can be found quite easily in the environment and abundance. Highlighting its (Pb) effects on various organs in the biological systems, its economic, as well as scientific importance, with the view to educate the public/professionals who work in this area. In this study, we focus on the current studies and research related to lead toxicity in animals and also to a certain extent toward human as well.
    Matched MeSH terms: Nervous System
  5. Cohen C, Moreira ED, Nañez H, Nachiappan JP, Arvinder-Singh HS, Huoi C, et al.
    Vaccine, 2019 03 22;37(13):1868-1875.
    PMID: 30826144 DOI: 10.1016/j.vaccine.2019.01.087
    BACKGROUND: The background incidence of viscerotropic- (VLD) and neurotropic-like disease (NLD) unrelated to immunization in dengue-endemic countries is currently unknown.

    METHODS: This retrospective population-based analysis estimated crude and standardized incidences of VLD and NLD in twelve hospitals in Brazil (n = 3), Mexico (n = 3), and Malaysia (n = 6) over a 1-year period before the introduction of the tetravalent dengue vaccine. Catchment areas were estimated using publicly available population census information and administrative data. The denominator population for incidence rates was calculated, and sensitivity analyses assessed the impact of important assumptions.

    RESULTS: Total cases adjudicated as definite VLD were 5, 57, and 56 in Brazil, Mexico, and Malaysia, respectively. Total cases adjudicated as definite NLD were 103, 29, and 26 in Brazil, Mexico, and Malaysia, respectively. Crude incidence rates of cases adjudicated as definite VLD in Brazil, Mexico, and Malaysia were 1.17, 2.60, and 1.48 per 100,000 person-years, respectively. Crude incidence rates of cases adjudicated as definite NLD in Brazil, Mexico, and Malaysia were 4.45, 1.32, and 0.69 per 100,000 person-years, respectively.

    CONCLUSIONS: Background incidence estimates of VLD and NLD obtained in Mexico, Brazil, and Malaysia could provide context for cases occurring after the introduction of the tetravalent dengue vaccine.

    Matched MeSH terms: Nervous System Diseases/diagnosis; Nervous System Diseases/etiology*; Nervous System Diseases/epidemiology*
  6. Abdulla MH, Sattar MA, Abdullah NA, Khan AH, Anand Swarup KR, Rathore HA, et al.
    Ups. J. Med. Sci., 2011 Mar;116(1):18-25.
    PMID: 21047287 DOI: 10.3109/03009734.2010.526723
    This study examined the effect of renal sympathetic innervation on adrenergically and angiotensin II (Ang II)-induced renal vasoconstriction in Wistar-Kyoto (WKY) rats.
    Matched MeSH terms: Sympathetic Nervous System/physiology*
  7. Suriana Che Awang, Khadijah Alavi
    MyJurnal
    Penggunaan media sosial tanpa budaya civik dan nilai etika dalam kalangan pelajar telah menjerumuskan ramai pelajar IPTA dalam kancah buli siber. Buli secara maya boleh dilakukan dalam muatnaik perkataan kejam, gambar dan video mangsa bagi menguggut, menghasut, fitnah, membalas dendam sehingga pemangsa merasakan dirinya hebat dan berkuasa. Durasi pantas semua maklumat boleh disebarluaskan dalam kadar pantas dengan jangkauan seluas dunia. Antara faktor buli siber berlaku dalam awal dewasa ialah cemburu, menanggih perhatian kawan media sosial, kapasiti ‘jaguh” atau gengster dalam media sosial. Kajian terdahulu lebih mefokuskan kepada fenomena buli dalam kalangan remaja, pelajar sekolah dan pengguna media massa. Manakala, amat kurang kajian berkaitan isu buli siber dalam kalangan mahawiswa. Objektif utama kajian ini ialah meneroka impak buli siber dalam kalangan pelajar UKM. Pendekatan kajian kes digunakan sebagai rekabentuk metodologi kajian ini. Pembinaan garis panduan soalan semi-struktur digunakan untuk temu bual responden. Seramai 6 orang responden telah dipilih bagi kajian ini dengan menggunakan teknik persampelan bertujuan (purposive sampling). Lokasi kajian yang dipilih ialah Universiti Kebangsaan Malaysia. Data temubual berstruktur dianalisis secara tematik. Hasil kajian mendapati terdapat lima kesan utama iaitu masalah emosi, kemurungan, keinginan untuk membunuh diri, kesedihan yang berlebihan, ketakutan dan perasaan marah tidak terkawal yang ditemukan transkrip responden kajian. Implikasi kajian ini diharapkan dapat mencadangkan program intervensi dan advokasi yang sesuai kepada pekerja sosial dalam mengendalikan kes buli siber di Bahagian Kaunseling Siswa, UKM.
    Matched MeSH terms: Autonomic Nervous System Diseases
  8. NANTHINI RAMALINGAM, KHADIJAH ALAVI
    MyJurnal
    Peningkatan kes penderaan kanak-kanak sehingga kematian kanak-kanak amat membimbangkan keluarga dan masyarakat. Artikel ini akan membahaskan tentang cabaran pekerja sosial dalam melindungi penderaan kanak-kanak di taska. Kajian lepas amat kurang mengkaji isu penderaan kanak-kanak di taska. Kajian ini dijalankan dengan menggunakan pendekatan kualitatif berpandukan kajian fenomenologi. Teknik pengumpulan data kajian melalui temubual berstruktur secara bertulis. 6 orang informan terdiri daripada pekerja sosial telah dipilih bagi kajian ini dengan menggunakan teknik persampelan bertujuan (purposive sampling). Lokasi kajian yang dipilih ialah taska sekitar Bandar Baru Bangi. Data temubual berstruktur dianalisis secara tematik dan hasil kajian mendapati terdapat tiga cabaran utama iaitu pertama praktis kerja sosial, konflik profesion dan kemahiran dalam mengendalikan pengurusan kes penderaan kanak-kanak. Implikasi kajian ini mencadangkan program kaunseling individu dan kelompok kepada pekerja sosial dan penting meningkatkan latihan dalam kemahiran mengendalikan pengurusan kes penderaan kanak-kanak yang semakin kompleks dan kritikal di masa depan.
    Matched MeSH terms: Autonomic Nervous System Diseases
  9. IDA ROYANI AMRAN, RAHAYA MD. JAMIN
    MyJurnal
    Pencemaran air di Tasik Chini, Pahang kian meruncing akibat pembangunan sekitar yang tidak terkawal menyebabkan kemusnahan rantaian makanan sekaligus mengancam kelangsungan hidup komuniti asli. Justeru, kajian telah dijalankan bagi mengenal pasti faktor, impak dan keberkesanan strategi dengan menggunapakai Teori Pengambilalihan. Selain itu, kajian ini dipilih untuk memenuhi kelompangan kajian terdahulu yang lebih menekankan kepentingan pengekalan biodiversiti flora dan fauna berbanding kajian terhadap kehidupan komuniti setempat. Maka, kajian deskritif tinjauan telah digunakan melalui kaedah pemerhatian, temu bual mendalam bersama empat orang informan, dianalisis secara transkripsi, triangulasi dan analisis kandungan. Dapatan kajian menunjukkan faktor pencemaran air berpunca daripada pembinaan empangan air, projek pembangunan, aktiviti pembalakan, aktiviti perlombongan dan hakisan tanih. Sementara, pertanian komersial juga menjejaskan kegunaan domestik, hidupan akuatik terganggu, perubahan sifat air, kehilangan sumber pendapatan, dan tahap kesihatan terjejas. Oleh itu, cadangan memperluaskan program advokasi seperti pengawalan pembuangan sampah sarap, pematuhan Penilaian Impak Alam Sekitar (EIA), penglibatan pihak awam dan swasta, pemantauan kesihatan, kesedaran awam, dan melakukan penyelidikan lanjutan. Kajian mendapati dua buah syarikat China mengeksport bijih besi yang diperoleh sekitar Tasik Chini menggunakan permit AP (Eksport dan Import) dari negeri lain, bukannya Pahang. Meskipun syarikat tersebut tidak mempunyai lesen melombong tetapi mereka mempunyai segala kelengkapan alatan memproses dan menjalankan operasinya hingga kini. Diharapkan isu pencemaran air di Tasik Chini dapat dipulihkan demi menjamin kelestarian sejagat.
    Matched MeSH terms: Autonomic Nervous System Diseases
  10. Radzak S, Khair Z, Ahmad F, Idris Z, Yusoff A
    Turk Neurosurg, 2021;31(1):99-106.
    PMID: 33491172 DOI: 10.5137/1019-5149.JTN.27893-20.4
    AIM: To determine the mitochondrial microsatellite instability (mtMSI) status in a series of Malaysian patients with brain tumors. Furthermore, we analyzed whether the mtMSI status is associated with the clinicopathological features of the patients.

    MATERIAL AND METHODS: Forty fresh frozen tumor tissues along with blood samples of brain tumor patients were analyzed for mtMSI by PCR amplification of genomic DNAs, and the amplicons were directly sequenced in both directions using Sanger sequencing.

    RESULTS: Microsatellite analysis revealed that 20% (8 out of 40) of the tumors were mtMSI positive with a total of 8 mtMSI changes. All mtMSI markers were detected in D310 and D16184 of the D-loop region. Additionally, no significant association was observed between mtMSI status and clinicopathological features.

    CONCLUSION: The variations, specifically the mtMSI, suggest that the mitochondrial DNA (mtDNA) can be targeted for genomic alteration in brain tumors. Therefore, the specific role of mtDNA alteration in brain tumor development and prognosis requires further investigation.

    Matched MeSH terms: Central Nervous System Neoplasms/diagnosis; Central Nervous System Neoplasms/genetics; Central Nervous System Neoplasms/epidemiology
  11. Othman FN, Muthuraju S, Noor SSM, Abdullah S, Mohd Yusoff AA, Tharakan J, et al.
    Tuberculosis (Edinb), 2018 09;112:45-51.
    PMID: 30205968 DOI: 10.1016/j.tube.2018.07.007
    The present study aimed to investigate the involvement of the angiogenic marker vascular endothelia growth factor (VEGF) and apoptotic markers of Bcl-2 and Bax in the neurons and astrocytes in the brain infected by Mycobacterium tuberculosis. The immunohistochemistry staining was performed to analyze the expression of the VEGF, Bcl-2 and Bax in the astrocytes and neurons. The expression of VEGF was high in neurons and astrocytes in both the infected brain and control tissues with no difference of angiogenic activity (p = 0.40). Higher Bcl-2 expression was seen in astrocytes of infected brain tissues compared to the control tissues (p = 0.004) promoted a higher anti-apoptotic activity in astrocytes. The neurons expressed strong Bax expression in the infected brain tissues compared to the control tissues (p 
    Matched MeSH terms: Tuberculosis, Central Nervous System/metabolism*; Tuberculosis, Central Nervous System/microbiology; Tuberculosis, Central Nervous System/pathology
  12. Mitra NK, Lee MS, Nadarajah VD
    Trop Biomed, 2010 Apr;27(1):19-29.
    PMID: 20562809
    Dermal exposure to organophosphate pesticide is important because of its popular use. This study planned to compare the changes in serum acetylcholinesterase, paraoxonase and neuronal density of hippocampus and iso-cortex between two age groups of Swiss albino mice (18-day-old and 150-day-old) after dermal application of (1/2) LD50 of chlorpyrifos for 14 days. Statistically significant reduction was observed in serum acetylcholinesterase (Mann-Whitney test, p<0.05) and neuronal density (Independent samples t-test, p<0.05) in exposed groups compared to the control. The reduction in serum AChE and neuronal density was more pronounced in exposed adult mice than in exposed neonatal mice. The paraoxonase level was insignificant in control neonatal mice, whereas it was 890-fold more in exposed neonatal mice. Upregulated paraoxonase levels may be extrapolated to produce relatively lower reduction of cholinesterase and neuronal density in neonatal mice.
    Matched MeSH terms: Central Nervous System Diseases/chemically induced*
  13. Mat Amin N
    Trop Biomed, 2004 Dec;21(2):57-60.
    PMID: 16493399
    Naegleria fowleri is a free-living amoeba, known as a causative agent for a fatal disease of the central nervous system (CNS) in man such as Primary amoebic meningoencephalitis (PAM). Factors contributing to its pathogenicity and its distribution in the environment have been investigated by previous researchers. In case of its pathogenicity, several enzymes such as phospolipase A and sphingomyelinase, have been proposed to probably act as aggressors in promoting PAM but no study so far have been conducted to investigate the presence of proteinase enzyme in this amoeba although a 56kDa cystein proteinase enzyme has been identified in Entamoeba histolytica as an important contributing factor in the amoeba's virulence. In this preliminary study, a pathogenic amoeba, Naegleria fowleri (strain NF3) was examined for the presence of proteinases. Samples of enzymes in this amoeba were analysed by electrophoresis using SDS-PAGE-gelatin gels. The results showed that this amoeba possesses at least two high molecular weight proteinases on gelatin gels; their apparent molecular weights are approximately 128 kDa and approximately 170 kDa. Band of approximately 128 kDa enzyme is membrane-associated and its activity is higher at alkaline pH compared with lower pH; at lower pH, its activity is greatly stimulated by DTT. The approximately 170 kDa band enzyme appears to be inactivated at pH 8.0, at lower ph its activity is higher and DTT-dependance. The activity of this enzyme is partially inhibited by inhibitor E-64 but markedly inhibited to antipain suggesting it belongs to the cysteine proteinase group.
    Matched MeSH terms: Central Nervous System Protozoal Infections
  14. Yew MMT, Lip JQ, Ling APK
    Trop Biomed, 2021 Sep 01;38(3):435-445.
    PMID: 34608117 DOI: 10.47665/tb.38.3.086
    Ever since the first reported case series on SARS-CoV-2-induced neurological manifestation in Wuhan, China in April 2020, various studies reporting similar as well as diverse symptoms of COVID-19 infection relating to the nervous system were published. Since then, scientists started to uncover the mechanism as well as pathophysiological impacts it has on the current understanding of the disease. SARS-CoV-2 binds to the ACE2 receptor which is present in certain parts of the body which are responsible for regulating blood pressure and inflammation in a healthy system. Presence of the receptor in the nasal and oral cavity, brain, and blood allows entry of the virus into the body and cause neurological complications. The peripheral and central nervous system could also be invaded directly in the neurogenic or hematogenous pathways, or indirectly through overstimulation of the immune system by cytokines which may lead to autoimmune diseases. Other neurological implications such as hypoxia, anosmia, dysgeusia, meningitis, encephalitis, and seizures are important symptoms presented clinically in COVID-19 patients with or without the common symptoms of the disease. Further, patients with higher severity of the SARS-CoV-2 infection are also at risk of retaining some neurological complications in the long-run. Treatment of such severe hyperinflammatory conditions will also be discussed, as well as the risks they may pose to the progression of the disease. For this review, articles pertaining information on the neurological manifestation of SARS-CoV-2 infection were gathered from PubMed and Google Scholar using the search keywords "SARS-CoV-2", "COVID-19", and "neurological dysfunction". The findings of the search were filtered, and relevant information were included.
    Matched MeSH terms: Central Nervous System/pathology*; Central Nervous System/virology; Nervous System Diseases/pathology; Nervous System Diseases/virology*; Peripheral Nervous System/pathology*; Peripheral Nervous System/virology
  15. Ahmed S, Butterworth P, Barwick A, Sharma A, Hasan MZ, Nancarrow S
    Trials, 2022 Dec 16;23(1):1017.
    PMID: 36527100 DOI: 10.1186/s13063-022-06968-5
    BACKGROUND: Foot complications occur in conjunction with poorly controlled diabetes. Plantar forefoot ulceration contributes to partial amputation in unstable diabetics, and the risk increases with concomitant neuropathy. Reducing peak plantar forefoot pressure reduces ulcer occurrence and recurrence. Footwear and insoles are used to offload the neuropathic foot, but the success of offloading is dependent on patient adherence. This study aims to determine which design and modification features of footwear and insoles improve forefoot plantar pressure offloading and adherence in people with diabetes and neuropathy.

    METHODS: This study, involving a series of N-of-1 trials, included 21 participants who had a history of neuropathic plantar forefoot ulcers. Participants were recruited from two public hospitals and one private podiatry clinic in Sydney, New South Wales, Australia. This trial is non-randomised and unblinded. Participants will be recruited from three sites, including two high-risk foot services and a private podiatry clinic in Sydney, Australia. Mobilemat™ and F-Scan® plantar pressure mapping systems by TekScan® (Boston, USA) will be used to measure barefoot and in-shoe plantar pressures. Participants' self-reports will be used to quantify the wearing period over a certain period of between 2 and 4 weeks during the trial. Participant preference toward footwear, insole design and quality-of-life-related information will be collected and analysed. The descriptive and inferential statistical analyses will be performed using IBM SPSS Statistics (version 27). And the software NVivo (version 12) will be utilised for the qualitative data analysis.

    DISCUSSION: This is the first trial assessing footwear and insole interventions in people with diabetes by using a series of N-of-1 trials. Reporting self-declared wearing periods and participants' preferences on footwear style and aesthetics are the important approaches for this trial. Patient-centric device designs are the key to therapeutic outcomes, and this study is designed with that strategy in mind.

    TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry (ANZCTR) ACTRN12620000699965p. Registered on June 23, 2020.

    Matched MeSH terms: Peripheral Nervous System Diseases*
  16. Ghareghani M, Ghanbari A, Eid A, Shaito A, Mohamed W, Mondello S, et al.
    Transl Neurosci, 2021 Jan 01;12(1):164-189.
    PMID: 34046214 DOI: 10.1515/tnsci-2020-0169
    Multiple sclerosis (MS) is an inflammatory demyelinating disease of the central nervous system (CNS) in which activated immune cells attack the CNS and cause inflammation and demyelination. While the etiology of MS is still largely unknown, the interaction between hormones and the immune system plays a role in disease progression, but the mechanisms by which this occurs are incompletely understood. Several in vitro and in vivo experimental, but also clinical studies, have addressed the possible role of the endocrine system in susceptibility and severity of autoimmune diseases. Although there are several demyelinating models, experimental autoimmune encephalomyelitis (EAE) is the oldest and most commonly used model for MS in laboratory animals which enables researchers to translate their findings from EAE into human. Evidences imply that there is great heterogeneity in the susceptibility to the induction, the method of induction, and the response to various immunological or pharmacological interventions, which led to conflicting results on the role of specific hormones in the EAE model. In this review, we address the role of endocrine system in EAE model to provide a comprehensive view and a better understanding of the interactions between the endocrine and the immune systems in various models of EAE, to open up a ground for further detailed studies in this field by considering and comparing the results and models used in previous studies.
    Matched MeSH terms: Central Nervous System
  17. Kan SK, Singh N, Chan MK
    Trans R Soc Trop Med Hyg, 1986;80(1):64-5.
    PMID: 3727000
    This is the first report in which a marine mollusc, Oliva vidua fulminans (olives), generally not known to be poisonous, was responsible for death in five children after consuming boiled olives with tamarind. The onset of symptoms was rapid 10 to 20 min after consumption of the olives. Signs and symptoms included nausea, vomiting, abdominal pain, tingling sensation around the lips, numbness around the mouth, drowsiness, lethargy and generalized weakness with paraesthesia in the limbs. The five deaths occurred within 3 to 4 hours after eating the poisoned olives and resulted from respiratory failure. Left-over olives from the affected household and freshly collected live olives had a toxicity of 14,200 mouse units (M.U.) and 15,000 M.U. per 100 g meat respectively. No other common chemical poison and organophosphorus insecticides were detected. The neurotoxic agent was acid and heat stable and was toxic at pH less than 4. Its action was similar to that of paralytic shellfish poisoning which was caused by toxins from certain dinoflagellates.
    Matched MeSH terms: Nervous System Diseases/chemically induced
  18. Mazlan M, Rajasegaran S, Engkasan JP, Nawawi O, Goh KJ, Freddy SJ
    Toxins (Basel), 2015 Sep;7(9):3758-70.
    PMID: 26402703 DOI: 10.3390/toxins7093758
    This study aims to determine the most efficacious dose of Botulinum neurotoxin type A (BoNT-A) in reducing sialorrhea in Asian adults with neurological diseases. A prospective, double-blind randomized controlled trial was conducted over 24 weeks. Thirty patients with significant sialorrhea were randomly assigned to receive a BoNT-A (Dysport(®)) injection into the submandibular and the parotid glands bilaterally via an ultrasound guidance. The total dose given per patient was either BoNT-A injection of (i) 50 U; (ii) 100 U; or (iii) 200 U. The primary outcome was the amount of saliva reduction, measured by the differential weight (wet versus dry) of intraoral dental gauze at baseline and at 2, 6, 12, and 24 weeks after injection. The secondary outcome was the subjective report of drooling using the Drooling Frequency and Severity Scale (DFS). Saliva reduction was observed in response to all BoNT-A doses in 17 patients who completed the assessments. Although no statistically significant difference among the doses was found, the measured reduction was greater in groups that received higher doses (100 U and 200 U). The group receiving 200 U of Dysport(®) showed the greatest reduction of saliva until 24 weeks and reported the most significant improvement in the DFS score.
    Matched MeSH terms: Nervous System Diseases/drug therapy*
  19. Koriem KM, Abdelhamid AZ, Younes HF
    Toxicol. Mech. Methods, 2013 Feb;23(2):134-43.
    PMID: 22992185 DOI: 10.3109/15376516.2012.730561
    Caffeic acid (CA) (3,4-dihydroxycinnamic acid) is among the major hydroxycinnamic acids. Hydroxycinnamic acid is the major subgroup of phenolic compounds. Methamphetamine (METH) is a potent addictive psychostimulant. Chronic use and acute METH intoxication can cause substantial medical consequences, including spleen, kidney, liver and heart. The objective of the present study was to evaluate the antioxidant activity of CA to protect against oxidative stress and DNA damage to various organs in METH toxicity. Thirty-two male Sprague Dawley (SD) rats were divided into four equal groups: group 1 was injected (i.p) with saline (1 mL/kg) while groups 2,3 and 4 were injected (i.p) with METH (10 mg/kg) twice a day over five days period. Where 100 & 200 mg/kg of CA were injected (i.p) into groups 3 and 4, respectively one day before exposure to METH injections. Tissue antioxidants and DNA content were evaluated in different tissues. METH decreased glutathione (GSH) and glutathione peroxidase (GPx) levels while increased malondialdehyde (MDA), catalase (CAT) and protein carbonyl levels in brain (hypothalamus), liver, and kidney tissues of rats. METH increased hyperdiploidy in these tissues and DNA damage results. Prior treatment of CA to animals exposed to METH restores the above parameters to the normal levels and preserves the DNA content of these tissues. These results were supported by histopathological investigations. In conclusion, METH induced oxidative stress and DNA damage and pretreatment of CA before METH injections prevented tissue oxidative stress and DNA damage in METH-treated animals.
    Matched MeSH terms: Central Nervous System Stimulants/toxicity*
  20. Viswanathan S, Appiwatanakul M, Nayak A, Islam B, Khatri B, Pangeran D, et al.
    Ther Apher Dial, 2019 Jun;23(3):289-297.
    PMID: 30927331 DOI: 10.1111/1744-9987.12806
    In conjunction with the third regional Southeast Asian (SEA) therapeutic plasma exchange (TPE) conference in Kuala Lumpur, Malaysia, 25 clinicians and researchers from SEA and South Asian countries attended the inaugural strategy meeting for the establishment of a regional TPE consortium for neurological disorders. The primary objective was to establish regional collaboration to improve delivery of TPE services in SEA. A pre-meeting survey was conducted to gather insights on disease spectrum, contextual practice challenges, and the need for a regional TPE consensus. Challenges identified include limited healthcare funding in support of diagnostic workup, TPE therapy, as well as development of clinical infrastructure and expertise capacity building. There was favorable interest in developing a working plan contextualized to this region. Strategies to overcome challenges were discussed. This included the need for a comprehensive referral system and network of regional TPE centers suited to local needs, supported by innovative TPE delivery programs.
    Matched MeSH terms: Nervous System Diseases/diagnosis; Nervous System Diseases/therapy*
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