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Cardiotoxicity among Children Accidentally Exposed to Organophosphate Insecticides Coupled with Scorpion Bites in Gaza

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Health 2021年第9期13卷 1045-1063页

作者： yasser el-nahhal Ibrahim el-nahhal Department of Earth and Environmental Science Faculty of Science Islamic University of Gaza Gaza Palestine Université de Toulon Toulon France

Insecticides are toxic chemicals used at homes for controlling insects of public health importance and controlling agricultural pests at home gardens. Their application may result in accidental poisoning. Four accidental insecticide-poisoning children coupled with a scorpion bitten child were brought to the main hospital in southern Gaza for medical treatment. Primary investigation showed severe breath shortness, low heartbeat, and low blood pressure (hypotension). These symptoms are indications of potential cardiotoxicity among children. electrocardiograms were measured and indicated various heart complications between cases. Complete blood count (CBC) determination showed the highest white blood cells (WBC) in the scorpion-bitted child suggesting the development of immune defense system. Blood electrolyte (Na+, K+, Ca2+) concentrations indicated disturbances due to poisoning. An interesting outcome of the study is the dramatic alteration in blood glucose concentration. Additionally, activity of acetylcholinesterase (AChE) indicated normal activity in poisoning case 1, moderate inhibition in poisoning case 2 and case 3, normal activity in poisoning case 4 and severe inhibition in poisoning case 5. The levels of Aminotransferase (ALT) and Aspartate Aminotransferase (AST) were within the acceptable range whereas the level of Alkaline Phosphatase (ALP) was above the acceptable reference range suggesting potential Hepato-toxicity. Scorpion bitten child did not receive atropine whereas two poisoned cases were successfully cured by atropine injection. Additionally, alternative safe medical management may be used for cardiotoxicity using vitamin C, vitamin E, quercetin, and curcumin. These vitamins may be recommended as alternative medical treatments for cardiotoxicity.

关键词： Component Insecticides Cardiotoxicity Children Scorpion Bites

Acute Poisoning among Farmers by Chlorpyrifos: Case Report from Gaza Strip

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Occupational Diseases and Environmental Medicine 2017年第2期5卷 47-57页

作者： yasser el-nahhal Faculty of Science The Islamic University Gaza Palestine

Spraying of organophosphorus insecticides (OPI) using high volume technique may result in poisoning cases among farmers or inhabitants in the spraying zone. This study reported a case among farmers in Gaza Strip, Palestine and discussed the follow up treatments. Results showed sever fasciculation of tongue and all muscle, pinpoint pupils not reacting to light, losing consciousness and disoriented, irritability, followed by diarrhea, vomiting, and severe inhibition of acetyl choline esterase (ACHE). Irritability and low level of ACHE activity were the unique syndromes of this case. Management of the poisoning with Atropine injection was not successful treatment to cure the case. Treatment with Toxogonin as intravenous injection resulted in relieved the irritability of the poisoned case and cure the patient at the end point. During the six weeks of follow up period, the case was severely poisoned in the 1st week, moderate poisoned in the 2nd week and slightly poisoned at the 3rd week. A medical decision to release the patient was made after ACHE activity level reached 4750 U/L, which very close to the normal range. The farmers left the hospital after three weeks of medical treatments and follow up. It is recommended to use Toxogonin in the management of poisoned cases with OPI immediately on arrival of cases with losing consciousness.

关键词： Organophosphorus Insecticides Poisoned Case Toxogonin Atropine

Successful Management of Carbamate Poisoning among Children: Case Report from Gaza Strip

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Occupational Diseases and Environmental Medicine 2018年第3期6卷 95-106页

作者： yasser el-nahhal Faculty of Science The Islamic University of Gaza Gaza City Palestine

A bad management of pesticide marketing and use resulted in using extreme toxic pesticides inside houses for controlling public health insects such as cockroaches. A child of two years old was poisoned with pesticide residues after application of pesticides at home for cockroach control. The child with a semi-conscious status was brought to the European hospital in south Gaza with his father along with the empty container of pesticide which was used at home. It appeared that Carbaryl (a carbamate insecticide) was the reason for poisoning. In the intensive care unite the child was washed out with clean water and his cloths were removed to reduced the possible hazards. Blood analysis showed that moderate inhibition of acetylcholinesterase (AChE) on addition became more sever on due time. Then the child was given several doses of atropine but without any improvement in AChE activity. Then the child was given Obedoxim as an antidote. This resulted in significant improvement of AChE activity. The child continued to receive Obedoxim every day until AChE activity reached the normal range. Blood analysis did not show any traces of Carbaryl. It is recommended to give Obedoxim to the carbamate immediately when someone is poisoned instead of atropine for successful management of the poisoned case.

关键词： Carbaryl Insecticides Poisoned Case Obedoxim Atropine

Accidental Zinc Phosphide Poisoning among Population: A Case Report

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Occupational Diseases and Environmental Medicine 2018年第2期6卷 37-49页

作者： yasser el-nahhal Faculty of Science The Islamic University-Gaza Gaza Strip Palestine

The use of rodenticides in Gaza in the past years becomes easy due to rodent outbreak. The municipalities allow the use of rodenticides without quality control or technical supports. This situation leads to an easy purchasing of zinc phosphide or its analog. This resulted in acute poising among adults and children. Herein we reported an accidental zinc phosphide poisoning to an adult man and discussed the associated medical complications with this case. Gastric lavage followed by atropine and vitamin K gavage on the 1st day of poisoning (hospital admission) resulted in a slight improvement of the case. Clinical symptoms included severe abdominal colic without losing conscious. Complete blood count (CBC) showed elevated levels of white blood cells (WBCs) and granulocytes (GRAN) levels indicating medical complication of the case. Biochemical analysis showed elevated levels of liver and cardiac biomarkers indicating potential liver and heart injuries. Continuous gavage of vitamin K, resulted in a gradual improvement of the case. On the 4th day of medical period, abdominal colic disappeared and CBC parameters became near the reference range. Consequently, the patient was set free from the hospital.

关键词： Zinc Phosphide Poising WBCs GRAN AST ALT CK

A New Field Protocol for Determination of Forest Structure, Biodiversity and Heath Status by Means of GPS Tools: A Case Study from Gaza Forest

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Open Journal of Ecology 2017年第1期7卷 69-83页

作者： yasser el-nahhal Department of Environmental and Earth Sciences Faculty of Science The Islamic University of Gaza Gaza Palestine

This article describes the application of GPS, image processing analysis and statistical tools for determination of forest structure and biodiversity. The idea is based on determination of forest area using GPS tools, then taking representative plots “samples” about 5% - 10% of the forest and counting the tree species in each plot (sample). This process enables the estimation of species population in each plot. The sum of all species population enables the calculation of relative density of each species. Multiplying species population with plot number of the forest enables the calculations of total species population in the forest. Calculating the relative density enables the determination of dominant, co-dominant, suppressed and flour structure of the forest. To determine the age of the forest, we apply our method on determining the diameter of trees and grouping them to four groups, this enables the estimation of dominant age within single species. From these data, we can estimate the age of the forest. This field protocol is easy and applicable and provides good results in estimating structure, age and biodiversity in the forest.

关键词： Forest Tree Counts Tree Age Biodiversity Health Status Field Protocol

Nitrate Residues in Fruits, Vegetables and Bread Samples and Their Health Consequences

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Health 2018年第4期10卷 487-501页

作者： yasser el-nahhal Department of Toxicology and Environmental Chemistry Faculty of Science The Islamic University of Gaza Gaza Palestine

Application of mineral fertilizers such as Nitrate or urea derivatives to crops is an essential agricultural step for fruits and vegetable production. This step may lead to accumulation of Nitrate levels in fruit and vegetables creating health risks such as cancer. This study aimed to determine nitrate residues in beard, fruits, vegetable and water samples collected from different locations and to correlate them with potential cancer cases in Gaza. Results showed elevated levels of Nitrate in some breads samples and all fruits, vegetable and water samples. This suggests high potential risk of population to cancer cases. So far, the growing incidence of cancer cases in Gaza strip may be attributed to high level of nitrate contents in bread, fruits, vegetable and water samples. It is recommended to exclude nitrate fertilization from agricultural process or replace it with other N-fertilizer source.

关键词： Nitrate Residues Cucumber Tomato Fruits

Risk Factors among Greenhouse Farmers in Gaza Strip

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Occupational Diseases and Environmental Medicine 2017年第1期5卷 1-10页

作者： yasser el-nahhal Faculty of Science The Islamic University of Gaza Gaza Palestine

Greenhouse farmers are exposed to many risk factors during work. This paper characterized the risk factors and discussed their health impacts among greenhouse farmers. Risk factors under greenhouse conditions emerged from pesticide application and greenhouse gas emission from soil during day. Risk factors among farmers were determined by recording toxicity symptoms, acute and chronic obstructive pulmonary disease (COPD). This study targeted 67 greenhouses in Gaza Strip and found 169 farmers doing many agricultural activities without protective clothes. We documented nine highly toxic insecticides and five moderately toxic fungicides being applied for insect and fungal control. A large number of farmers (55%) revealed that they visited respiratory health clinic quite two to three times a month immediately after insecticide application. About 8.88% (n = 15) of farmers stated that they had unrecoverable lung disease due to working in greenhouses during winter season. Personal health records of farmers showed variety of cholinergic symptoms, severe reduction on acetyl choline esterase activity (ACHE), many cases of COPD and some pneumonia cases. Classification of farmers according to risk factors indicates that 18% of farmers are at high risk due to extreme to insecticides. It is recommended to seasonally investigate the activity of ACHE of greenhouse farmers and to routinely check their chests and lungs to avoid any potential health risk factors due to works in greenhouse environment.

关键词： Risk Factors Insecticides Acetylcholine Esterase Chronic Obstructive Pulmonary Disease

Extraction Methods of Cyanotoxins Aqueous Media and Sediments

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American Journal of Analytical Chemistry 2021年第9期12卷 311-323页

作者： Hala el-nahhal Maged Yassin Mazan Alzaharna Ibrahim el-nahhal yasser el-nahhal Faculty of Health Sciences Islamic University of Gaza P.O. Box 108 Gaza Palestine Université de Toulon Toulon France Department Environment and Earth Science Faculty Science Islamic University of Gaza P.O. Box 108 Gaza Palestine

Cyanotoxins are chemical compounds produced by cyanobacterial mats grown in aquatic ecosystems. These may threaten human health and aquatic organisms. Extraction of these toxins is usually associated with many difficulties due to their concentration in aquatic ecosystems. This study is designed to provide suitable and effective extraction procedures that can effectively extract low concentration cyanotoxin from water and bacterial cells. The methodology is based on collecting raw material of cyanobacterial mats from naturally growing sites such as Wadi Gaza along with 16 liters of aquatic surrounding media. The materials were left in the Lab for 24 - 48 h for stabilization of the mats. The floating mats were collected using special funnel and allowed to air drying. The aqueous phase was extracted by liquid/liquid extraction using solvent mixture (hexane + ethylacetate 10% w:w), and by liquid solid extraction using several types of organoclays complexes. The solid phase was extracted by acetone and ultrasonic device. Results showed some difficulties were associated with liquid/liquid extraction whereas effective and easy extraction procedures were obtained by liquid solid extraction using either organoclay complex or activated charcoal. In contrast combination of both solid materials did not show improvement in the extracted cyanotoxin. Thus we recommend the use of organoclays or activated charcoal separately for extracting cyanotoxin. Further improvement of extraction can be tailored by using a specific organoclay complex that has some similarity in the chemical structure between the pre-adsorbed organic cation to the clay mineral and the chemical structure of cyanotoxin.

关键词： Cyanobacteria Cyanotoxins Extraction Organoclays

Development of controlled release formulations of thiabendazole

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Journal of Agricultural Chemistry and Environment 2014年第1期3卷 1-8页

作者： yasser Z. el-nahhal Department of Earth and Environmental Science Faculty of Science The Islamic University-Gaza Gaza Palestine

This study aimed to develop controlled release formulation of Thiabendazole for reduced contaminations to soil water and agricultural produces. The idea behind this work was based on changing the ionization status of Thiabendazole molecule throughout pH changes to become a cation then adsorbing it to bentonite clay surfaces. Equilibrium concentrations of Thiabendazole in the adsorption solutions were determined by HPLC. Results showed that Thiabendazole was better adsorbed in clay at the lowest pH value (pH 3). Furthermore, raising the temperature of the adsorption reaction increased the adsorbed amount of Thiabendazole. Release experiments showed that Thiabendazole is extremely slower at pH 3 than at pH 5.5 or pH 9. These promising results suggest that application of Thiabendazole clay based formulation may reduce the applied rate and that the released fraction consequently may reduce the environmental contamination. It is also advantageous to use these formulations in the acidic soil for plant disease control.

关键词： Thiabendazole Adsorption Controlled Release pH Bentonite