glue sniffing neuropathy and review of literature

Glue sniffing neuropathy commonly known as n-hexane neuropathy. It is well documented that industrial exposure to n-hexane causes neuropathy, however it is less well recognized that inhalation of n-hexane present in the vapors can also cause neuropathy However such patients are not seen that frequently. The acute worsening also generates differential diagnosis of GBS. Most of literature is reported from west .We report such case for the first time from Saudi Arabia. A 35 year old male presented to us with progressive numbness followed by weakness in both legs since last three weeks. Over next two week he became chair bound and in the beginning of third week he also stated to feel numbness in both the hands and some weakness was also noted in hands. His past history was significant for carpet cleaning glue sniffing for many years. His exam was significant for distal weakness feet greater than hands, deep tendon reflexes were absent all over. All sensory modalities showed glove and stocking pattern. Nerve conduction velocities showed slowing. His CSF exam was normal. We conclude that n-hexane is neurotoxic when inhaled to excess and, that the neuropathy has characteristic electrophysiological and pathological features

Advice from the Scientific Advisory Board of the Organisation for the Prohibition of Chemical Weapons on riot control agents in connection to the Chemical Weapons Convention

Compounds that cause powerful sensory irritation to humans were reviewed by the Scientific Advisory Board (SAB) of the Organisation for the Prohibition of Chemical Weapons (OPCW) in response to requests in 2014 and 2017 by the OPCW Director-General to advise which riot control agents (RCAs) might be subject to declaration under the Chemical Weapons Convention (the Convention). The chemical and toxicological properties of 60 chemicals identified from a survey by the OPCW of RCAs that had been researched or were available for purchase, and additional chemicals recognised by the SAB as having potential RCA applications, were considered. Only 17 of the 60 chemicals met the definition of a RCA under the Convention. These findings were provided to the States Parties of the Convention to inform the implementation of obligations pertaining to RCAs under this international chemical disarmament and non-proliferation treaty.Peer reviewe

Advice on assistance and protection from the Scientific Advisory Board of the Organisation for the Prohibition of Chemical Weapons : Part 2. On preventing and treating health effects from acute, prolonged, and repeated nerve agent exposure, and the identification of medical countermeasures able to reduce or eliminate the longer term health effects of nerve agents

The Scientific Advisory Board (SAB) of the Organisation for the Prohibition of Chemical Weapons (OPCW) has provided advice in relation to the Chemical Weapons Convention on assistance and protection. We present the SAB’s response to a request from the OPCW Director-General in 2014 for information on the best practices for preventing and treating the health effects from acute, prolonged, and repeated organophosphorus nerve agent (NA) exposure. The report summarises pre- and post-exposure treatments, and developments in decontaminants and adsorbing materials, that at the time of the advice, were available for NAs. The updated information provided could assist medics and emergency responders unfamiliar with treatment and decontamination options related to exposure to NAs. The SAB recommended that developments in research on medical countermeasures and decontaminants for NAs should be monitored by the OPCW, and used in assistance and protection training courses and workshops organised through its capacity building programmes.Peer reviewe

advice from the scientific advisory board of the organisation for the prohibition of chemical weapons on isotopically labelled chemicals and stereoisomers in relation to the chemical weapons convention

AbstractThe Chemical Weapons Convention (CWC) is an international disarmament treaty that prohibits the development, stockpiling and use of chemical weapons. This treaty has 193 States Parties (nations for which the treaty is binding) and entered into force in 1997. The CWC contains schedules of chemicals that have been associated with chemical warfare programmes. These scheduled chemicals must be declared by the States that possess them and are subject to verification by the Organisation for the Prohibition of Chemical Weapons (OPCW, the implementing body of the CWC). Isotopically labelled and stereoisomeric variants of the scheduled chemicals have presented ambiguities for interpretation of the requirements of treaty implementation, and advice was sought from the OPCW's Scientific Advisory Board (SAB) in 2016. The SAB recommended that isotopically labelled compounds or stereoisomers related to the parent compound specified in a schedule should be interpreted as belonging to the same schedule. This advice should benefit scientists and diplomats from the CWC's State Parties to help ensure a consistent approach to their declarations of scheduled chemicals (which in turn supports both the correctness and completeness of declarations under the CWC). Herein, isotopically labelled and stereoisomeric variants of CWC-scheduled chemicals are reviewed, and the impact of the SAB advice in influencing a change to national licensing in one of the State Parties is discussed. This outcome, an update to national licensing governing compliance to an international treaty, serves as an example of the effectiveness of science diplomacy within an international disarmament treaty

Global patient outcomes after elective surgery: prospective cohort study in 27 low-, middle- and high-income countries.

BACKGROUND: As global initiatives increase patient access to surgical treatments, there remains a need to understand the adverse effects of surgery and define appropriate levels of perioperative care. METHODS: We designed a prospective international 7-day cohort study of outcomes following elective adult inpatient surgery in 27 countries. The primary outcome was in-hospital complications. Secondary outcomes were death following a complication (failure to rescue) and death in hospital. Process measures were admission to critical care immediately after surgery or to treat a complication and duration of hospital stay. A single definition of critical care was used for all countries. RESULTS: A total of 474 hospitals in 19 high-, 7 middle- and 1 low-income country were included in the primary analysis. Data included 44 814 patients with a median hospital stay of 4 (range 2-7) days. A total of 7508 patients (16.8%) developed one or more postoperative complication and 207 died (0.5%). The overall mortality among patients who developed complications was 2.8%. Mortality following complications ranged from 2.4% for pulmonary embolism to 43.9% for cardiac arrest. A total of 4360 (9.7%) patients were admitted to a critical care unit as routine immediately after surgery, of whom 2198 (50.4%) developed a complication, with 105 (2.4%) deaths. A total of 1233 patients (16.4%) were admitted to a critical care unit to treat complications, with 119 (9.7%) deaths. Despite lower baseline risk, outcomes were similar in low- and middle-income compared with high-income countries. CONCLUSIONS: Poor patient outcomes are common after inpatient surgery. Global initiatives to increase access to surgical treatments should also address the need for safe perioperative care. STUDY REGISTRATION: ISRCTN5181700

Association between ENAM polymorphisms and dental caries in children

Aim: Dental enamel, the most rigid biological tissue of the tooth known to mankind, is the most integral and fundamental part of the tooth. Enamel matrixes compile 5% of Enamelin peptides and at the time of tooth development, they are considered to effect the formation and elongation of enamel crystallites. ENAM plays critical role in enamel formation. Any changes in ENAM may affect the thickness of enamel and may lead to dental caries. The present study is aimed to evaluate the association of ENAM gene polymorphisms and susceptibility of dental caries development risk. Material and methods: The present study was carried out on 168 South Indian children, children’s with dental caries were included in study. Written consent was taken from their parents/guardians. Additionally 193 healthy individuals were enrolled as controls. Sampling was done after dental examination of the individuals. Three ENAM gene single nucleotide polymorphisms (SNPs) were rs7671281, rs3796704 and rs12640848 was genotyped to check their role in susceptibility of dental caries development risk. Results: Out of three SNPs rs7671281 showed statistically significant risk association with dental caries susceptibility in this ethnic population at heterozygous allele CT (OR: 1.939, p = .01865) and with minor allele T (OR: 1.451, p = .001292). SNP rs3796704 showed significant protective association with dental caries in Indian population at heterozygous allele GA (OR: 0.409, p = .0192) and with minor allele A (OR: 0.645, p = .00875). SNP rs12640848 showed significant protective association with dental caries in Indian population at heterozygous allele AG (OR: 3.041, p = .00642) and with minor allele G (OR: 1.478, p = .02184). Preliminary insilico analysis also showed that rs7671281 (Ile648Thr) amino acid change will cause the structural and functional changes in ENAM protein. Conclusions: In the present study significant association was observed between ENAM gene SNP rs7671281 and dental caries susceptibility in South Indian children. These results suggested that ENAM gene variants may contribute to dental caries in children. Keywords: Ameloblastin, Amelogenin, Dental enamel, Enameli

Advice on chemical weapons sample stability and storage provided by the Scientific Advisory Board of the Organisation for the Prohibition of Chemical Weapons to increase investigative capabilities worldwide

Abstract The Scientific Advisory Board (SAB) of the Organisation for the Prohibition of Chemical Weapons (OPCW) has provided advice on the long-term storage and stability of samples collected in the context of chemical weapons investigations. The information they compiled and reviewed is beneficial to all laboratories that carry out analysis of samples related to chemical warfare agents and is described herein. The preparation of this report was undertaken on request from the OPCW Director-General. The main degradation products for chemicals on the Schedules in the Annex on Chemicals of the Chemical Weapons Convention are tabulated. The expertise of the 25 scientists comprising the SAB, a review of the scientific literature on environmental and biomedical sample analysis, and answers to a questionnaire from chemists of nine OPCW Designated Laboratories, were drawn upon to provide the advice. Ten recommendations to ensure the long-term storage and stability of samples collected in relation to the potential use of chemical weapons were provided and are repeated here for the consideration of all laboratories worldwide.Peer reviewe

Advice on assistance and protection provided by the Scientific Advisory Board of the Organisation for the Prohibition of Chemical Weapons: Part 1. On medical care and treatment of injuries from nerve agents

The Scientific Advisory Board (SAB) of the Organisation for the Prohibition of Chemical Weapons (OPCW) has provided advice on assistance and protection in relation to the Chemical Weapons Convention. In this, the first of several papers describing the SAB's work on this topic, we describe advice given in response to questions from the OPCW Director-General in 2013 and 2014 on the status of available medical countermeasures and treatments to organophosphorus nerve agents. This paper provides the evidence base for this advice which recommended to the OPCW pretreatments, emergency care, and long-term treatments that were available at the time of the request for this class of chemical warfare agent (CWA). It includes a bibliography of over 140 scientific references, which can be used as a platform for watching future medical countermeasure developments. The information provided in this paper should serve as a valuable reference for medical professionals and emergency responders who may have no knowledge of the symptoms and treatment options of exposure to nerve agents.Fil: Timperley, Christopher M.. Defence Science and Technology Laboratory; Reino UnidoFil: Forman, Jonathan E.. OPCW Scientific Advisory Board Secretary and Science Policy Adviser; Países BajosFil: Abdollahi, Mohammad. Tehran University Of Medical Sciences; IránFil: Al-Amri, Abdullah Saeed. Saudi Basic Industries Corporation; Arabia SauditaFil: Baulig, Augustin. Secrétariat Général de la Défense et de la Sécurité Nationale; FranciaFil: Benachour, Djafer. Ferhat Abbas University, Setif-1; ArgeliaFil: Borrett, Veronica. Bai Scientific; Australia. University of Melbourne; AustraliaFil: Cariño, Flerida A.. University of the Philippines; FilipinasFil: Geist, Michael. Basf Se; AlemaniaFil: Gonzalez, David. Universidad de la República Facultad de Química; Uruguay. Universidad de la República; UruguayFil: Kane, William. Monsanto Company; Estados UnidosFil: Kovarik, Zrinka. Institute for Medical Research and Occupational Health; CroaciaFil: Martínez Álvarez, Roberto. Universidad Complutense de Madrid; EspañaFil: Mourão, Nicia Maria Fusaro. ABIQUIM; BrasilFil: Neffe, Slawomir. Military University of Technology; PoloniaFil: Raza, Syed K.. Institute Of Pesticide Formulation Technology (ipft); IndiaFil: Rubaylo, Valentin. State Scientific Research Institute of Organic Chemistry and Technology; RusiaFil: Suarez, Alejandra Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Química Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario; ArgentinaFil: Takeuchi, Koji. National Institute of Advanced Industrial Science and Technology; JapónFil: Tang, Cheng. National Defence University; ChinaFil: Trifirò, Ferruccio. Universidad de Bologna; ItaliaFil: van Straten, Francois Mauritz. South African Nuclear Energy Corporation SOC Ltd; SudáfricaFil: Vanninen, Paula S.. Helsingin Yliopisto; FinlandiaFil: Vucinic, Slavica. Vojnomedicinska Akademija; SerbiaFil: Zaitsev, Volodymyr. Pontifícia Universidade Católica do Rio de Janeiro; Brasil. Taras Shevchenko National University of Kyiv, Kyiv; UcraniaFil: Zafar Uz Zaman, Muhammad. National Engineering And Scientific Commission (nescom); PakistánFil: Zina, Mongia Saïd. Université de Tunis El Manar, Faculté Des Sciences de Tunis; TúnezFil: Holen, Stian. Opcw Scientific Advisory Board Secretary; Países Bajo

Advice on assistance and protection provided by the Scientific Advisory Board of the Organisation for the Prohibition of Chemical Weapons: Part 3. On medical care and treatment of injuries from sulfur mustard

Blister agents damage the skin, eyes, mucous membranes and subcutaneous tissues. Other toxic effects may occur after absorption. The response of the Scientific Advisory Board (SAB) of the Organisation for the Prohibition of Chemical Weapons (OPCW) to a request from the OPCW Director-General in 2013 on the status of medical countermeasures and treatments to blister agents is updated through the incorporation of the latest information. The physical and toxicological properties of sulfur mustard and clinical effects and treatments are summarised. The information should assist medics and emergency responders who may be unfamiliar with the toxidrome of sulfur mustard and its treatment.Fil: Timperley, Christopher M.. Defence Science And Technology Laboratory; Reino UnidoFil: Forman, Jonathan E.. Organisation For The Prohibition Of Chemical Weapons; Países BajosFil: Abdollahi, Mohammad. Tehran University of Medical Sciences; IránFil: Al-Amri, Abdullah Saeed. Saudi Basic Industries Corporation; Arabia SauditaFil: Baulig, Augustin. Secrétariat Général de la Défense Et de la Sécurité Nationale; FranciaFil: Benachour, Djafer. Ferhat Abbas University; ArgeliaFil: Borrett, Veronica. La Trobe University; AustraliaFil: Cariño, Flerida A.. University Of The Philippines Diliman; FilipinasFil: Curty, Christophe. Spiez Laboratory; SuizaFil: Geist, Michael. Basf Se; AlemaniaFil: Gonzalez, David. Universidad de la República; UruguayFil: Kane, William. Monsanto Company; Estados UnidosFil: Kovarik, Zrinka. Institut Za Medicinska Istrazivanja I Medicinu Rada; CroaciaFil: Martínez Álvarez, Roberto. Universidad Complutense de Madrid; EspañaFil: Mourão, Nicia Maria Fusaro. Brazilian Chemical Industry; BrasilFil: Neffe, Slawomir. Wojskowa Akademia Techniczna; PoloniaFil: Raza, Syed K.. National Accreditation Board For Testing And Calibration Laboratories; IndiaFil: Rubaylo, Valentin. State Research Institute Of Organic Chemistry And Technology; RusiaFil: Suarez, Alejandra Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Química Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario; ArgentinaFil: Takeuchi, Koji. National Institute Of Advanced Industrial Science And Technology; JapónFil: Tang, Cheng. Ministry of National Defence. Office for the Disposal of Japanese Abandoned Chemical Weapons; ChinaFil: Trifirò, Ferruccio. Universidad de Bologna; ItaliaFil: Straten, Francois Mauritz van. Independent Former Opcw Sab Member; SudáfricaFil: Vanninen, Paula S.. University of Helsinki; FinlandiaFil: Vucinic, Slavica. Vojnomedicinska Akademija; SerbiaFil: Zaitsev, Volodymyr. Pontifícia Universidade Católica do Rio de Janeiro; BrasilFil: Zafar-Uz-Zaman, Muhammad. National Engineering And Scientific Commission; PakistánFil: Zina, Mongia Saïd. Université de Tunis El Manar, Faculté Des Sciences de Tunis; TúnezFil: Holen, Stian. OPCW; Países BajosFil: Alwan, Wesam S.. Monash University; AustraliaFil: Suri, Vivek. OPCW Office of Strategy and Policy; Países BajosFil: Hotchkiss, Peter J.. Organisation For The Prohibition Of Chemical Weapons; Países BajosFil: Ghanei, Mostafa. Baqiyatallah University Of Medical Sciences; Irá