Nada Edrees - Academia.edu (original) (raw)

Papers by Nada Edrees

Cureus, 2021

Myasthenia gravis is an autoimmune disease that affects the neuromuscular junction. It causes gen... more Myasthenia gravis is an autoimmune disease that affects the neuromuscular junction. It causes generalized muscle weakness that may include the respiratory muscles, potentially leading to a medical emergency known as a myasthenic crisis. This is a case report of a rare incident of a myasthenia gravis exacerbation after administration of the oral antipsychotic risperidone to a schizophrenic patient. Few similar cases have been reported. Although rare, such incidents are dangerous as physicians could easily confuse myasthenia gravis symptoms with extrapyramidal side effects of antipsychotics. This concern should be addressed not just with risperidone but rather with any other antipsychotics that exhibit anticholinergic side effects.

The spider mites Tetranychus urticae Koch and Tetranychus evansi Baker and Pritchard are importan... more The spider mites Tetranychus urticae Koch and Tetranychus evansi Baker and Pritchard are important pests of horticultural crops. This study was conducted to determine the effect of some bioagentsa gainst Tetranychus urticae. Our results the data showed that the lowest median lethal concentration (LC50) appeared non-significant on the mean number of T. urticae through different times Whereas, the high concentration of bioagents culture (100%) appeared significant increase inhibit the growth of Tetranychus urticae adult after 24 and 120 hours. that mortality percentage of Tetranychus urticae after 24, 48, 72. 96. 120 and 144 h respectively affected by 50 % and 100% culture of bioagents culture. Mortality ranged from 0 to 62 % during different time by 50 % culture of bioagents culture .Beauveria bassiana and serratia (Sm) recorded highly mortality percentage at different times. On the other hands, Mortality ranged from 0 to 55 % during different time by 50 % culture of bioagents cultur...

Ticks are obligate ectoparasites, which infest every major vertebrate animal group, including man... more Ticks are obligate ectoparasites, which infest every major vertebrate animal group, including man and feed on their blood. They are vectors of numerous pathogenic viruses, rickettsia, bacteria, protozoa and filaria. Many of these pathogens are transmitted to the host either directly during the tick bite or indirectly by contact with coxal fluids, excreta, or crushed bodies. The different stages in the life cycle of Hyalomma dromedarii were investigated under laboratory conditions. The larval, nymphal and adult ticks were all fed on rabbits at 25-27°C, 50% relative humidity (RH) and exposed to daylight. All free-living stages were maintained in an incubator at 26 ± 1°C, 70% RH and daylight conditions. The life cycle of H. The results confirmed the significant correlation between the mortality of the mature and immature stages and the temperature and the relative humidity.

International Journal of Zoological Investigations, Dec 31, 2019

The morphological characters of honeybees were measured using a Scan Photo technique (SPT) that i... more The morphological characters of honeybees were measured using a Scan Photo technique (SPT) that involves the use of a stereo binocular microscope and Photoshop program combined together. The body parts of a honeybee worker were scanned as images after they have been dissected. Photoshop program was used to view the images and their characters were measured using the ruler of the software program. While measuring the chosen morphometric characters, a significant difference was observed when the SPT and using a binocular microscope were compared. The measurements of 7 morphological characters of honeybee workers from nectar-feeding colonies were compared with those of Pepsi cola feeding colonies. There are more than 24 different subspecies of honeybees (Apis mellifera) classified based on their morphological characteristics. As a result, morphological characteristics are usually considered when classifying honeybees. Many authors for various reasons have used body morphological characteristics as well as sets of wings to classify subspecies of honeybees. Such characteristics have been defined overtime and sourced from diverse studies. Of all body morphological characteristics studied so far, wing venation characteristics have been given more attention. Up to now in Saudi Arabia, there are no specific review articles that focus mainly on Apis mellifera jemenitica body morphological characteristics. Consequently, information gathered from sampling and measurement methods, and factors affecting these characteristics especially mouthparts is to recognize the possibility of finding any changes in configuration as a result of feeding on soft drink. The morphology and functional anatomy of the mouthparts are examined by dissection, light microscopy, and supplemented by feeding type observations. This manuscript focuses on the differentiation of the proboscis which is formed by the glossa, in context with feeding from natural nectar and soft drink. In the literature, morphological innovations have been described for insects, particularly forbees.These innovations are critical for the production of differentiation in proboscis such as proboscis hair formation and modification. The present study showed that the proboscis of honeybees feeding on Pepsi is wider, thicker and very hairy compared to the natural feeding honeybee's proboscis. The morphological structures of the head, proboscis, hind leg, and wings were measured for the two groups of bees, the first naturally nourished with nectar, and the second feeding on the drink Pepsi Cola. The results showed significant differences in nectar and Pepsi feeding in different length measurements of head (

Caro editor, O diagnóstico definitivo de tuberculose pleural (TP) depende da demonstração do baci... more Caro editor, O diagnóstico definitivo de tuberculose pleural (TP) depende da demonstração do bacilo Mycobacterium tuberculosis em amostras de expetoração, líquido pleural ou biópsia pleural (BP).1 No entanto, a TP é muitas vezes um diagnóstico não confirmado, baseado em critérios bioquímicos ou histológicos.1,2 O objetivo deste estudo foi analisar a contribuição da BP cega no diagnóstico de TP. Doentes submetidos a BP cega no Hospital de Braga, entre 2006 e 2011, foram identificados a partir de uma base de dados de registos de biópsias pleurais. Características do líquido pleural e resultados das BP foram analisados retrospetivamente através da revisão de processos clínicos. Doentes com derrame pleural exsudativo submetidos a BP cega foram incluídos no estudo. Casos com análise bioquímica, citológica ou microbiológica incompleta do líquido pleural foram excluídos. Culturas da BP não foram incluídas na análise por dados insuficientes. A presença de adenosina desaminase (ADA) >70 U...

European Respiratory Journal, Sep 1, 2013

Body: Introduction: Pleural tuberculosis (TB) is often a non confirmed diagnosis, based on bioche... more Body: Introduction: Pleural tuberculosis (TB) is often a non confirmed diagnosis, based on biochemical or histological criteria. Objectives: Clinical and demographic characteristics associated with a diagnosis of pleural TB. Value of blind pleural biopsy (PB) in the investigation of pleural effusions and its contribution to the TB confirmation or exclusion. Methods: Retrospective analysis of patients submitted to blind PB in a 6-year period. Clinical and demographic data, characteristics of pleural fluid and results of PB were reviewed. Biochemical criteria: ADA >70 U/L and lymphocyte/neutrophil ratio >0.75 in pleural fluid. Results: We performed a total of 272 PB in 240 patients, 65,1% male with a median age of 67 years. 69 cases were excluded because of incomplete study. In multivariate analysis patients who were younger (p<0,001), had fever (p=0,001) and with unilateral pleural effusion (p=0,04) had higher risk of having a pleural TB. Final diagnosis of pleural TB was established in 39/203 cases (19,2%). In the 22 cases with biochemical criteria of pleural TB, one had another diagnosis (lymphoma). In the 181 cases without biochemical criteria, the diagnosis of pleural TB was established in 18 cases (9,9%): PB identified granulomas in 9, contributing yet to another diagnosis in 35 (19,3%). The sensitivity, specificity, PPV and NPV of the biochemical criteria for the diagnosis of pleural TB was, respectively, 52,9%, 97,6%, 81,8% and 91,2%, and the combination of PB with biochemical criteria was, respectively, 79,4%, 97,6%, 87,1% and 95,9%. Conclusion: In this sample, the performance of blind PB associated with the analysis of pleural fluid obtained a good sensitivity and excellent specificity for the diagnosis of pleural TB.

Introduction: The P. aeruginosa pneumonia acquired in a non-hospital environment (Community-Acqui... more Introduction: The P. aeruginosa pneumonia acquired in a non-hospital environment (Community-Acquired Pneumonia [CAP] and Healthcare-Associated Pneumonia [HCAP]) is a growing threat whose correct diagnosis can lead to a better outcome and prognosis. Purpose: Assessment of the epidemiological, clinical, radiological and therapeutic approach of patients with Pseudomonas pneumonia acquired in a non-hospital environment. Methods: Retrospective analysis of patients admitted with of P. aeruginosa CAP and HCAP according to ATS/IDSA 2005 criteria. Results: Sixty eight patients were included: 10 (14.7%) with CAP and 58 (86.3%) with HCAP. Mean age was 75.4 years and 58,8% were males. Sixty patients (88.2%) were partially or totally care dependent. Comorbidity index ( Charlson comorbidity index adjusted for age) was ≥ 6 in half of the sample. At hospital admission, patients presented a CURB-65 score ≥ 3 in 42 patients (61.7%) and a Pneumonia Severity Index IV/V in 63 patients (92.6%).Chest radiography showed alveolar infiltrates in 66 patients: lower lung lobes predominance (68,2%) and focal pattern (59.1%). Identification of the infectious agent was mostly performed in microbiological examination of sputum (58 patients, 85.3%); in blood cultures and BAL/bronchial aspirate, respectively, in 8 (11.8%) and 7 (10.3%) patients. Initial antibiotic regimen was changed in 37 patients (54.4%) and had Pseudomonas coverage in 41 patiens (60.3%), with Piperacillin/Tazobactam being the first choice in 22 patients (53.6%). The mortality rate was 13.2%. Conclusion: P. aeruginosa pneumonia acquired in a non-hospital environment, is associated to patients with high level of dependency and comorbidities and usually presents with clinically severe disease.

In this study, three types of nutrition intended for infants were selected, treated with storage ... more In this study, three types of nutrition intended for infants were selected, treated with storage mites, Suidasia nesbetti were raised in the laboratory in a suitable environment, then culturing 100 mites in each sample and preserving them in different places in each selected kitchen at temperature and humidity varying relatively for a period of six months including autumn and winter. Fifteen houses having the same characteristics were chosen in terms of the region, age of the building, standard of living, the level of hygiene in the house, number of family members which on average was eight members per family home, and the level of health education. The samples were examined after opening directly to make sure of the safety and suitability for the secure feeding, and the examination was conducted periodically, every two weeks after storage to estimate the population dynamics of the mites with increasing duration for storage by one gram of each sample at the various houses and places...

Pistacia Lentiscus and Boswellia Carterii (Raw), which are widespread in the popular culture and ... more Pistacia Lentiscus and Boswellia Carterii (Raw), which are widespread in the popular culture and sold by spice shops for incensing houses, are used for fighting House Dust Mites (HDM), for the purpose of identifying their impact on minimizing the prevalence of HDMs. The field experiment was conducted in thirty rooms (separate fifteen rooms for incensing by using P. lentiscus, and the remaining fifteen rooms for incensing by B. Carterii), through using traditional incense burner, and placing the tested substance in clay crucible on the flame for quarter hour on daily basis during the first week, 30 minutes during the second week, 45 minutes during the third week, and 60 minutes during the fourth week. Surveyed rooms were prepared under similar conditions with regard to living standard and type of furniture containing ceramics covered with thick carpets, windows were tightly closed and air was denied access throughout the study period (one month), except for once a week (the seventh d...

House dust mites in clothing and bedding are the source of major allergen. Based on studies of De... more House dust mites in clothing and bedding are the source of major allergen. Based on studies of Dermatophagoides pteronyssinus only, weekly washing in hot water is recommended to kill dust mites and remove allergen from clothing and bedding (DiAnn et al., 2002). However, in the Saudi Arabia, washing is most often done in warm or cold water, and other mite species are involved. Most stages of D. pteronyssinus, Blomia trobicalis and Dermatophagoide farinae cannot survive when exposed to 45°C55°C for at least 48hrs. Survival of the house dust mite D. farinae and D.pteronyssinus at specific ambient conditions, was undertaken to determine the possibility of chemical and herbal detergent and temperature manipulation as a control method.Three studies were performed. The first compared combinations of 2 laundry agents and 2herbal agents (Nabk leaf, Bay Laurel solutions, detergents with enzymes, and detergent without enzymes) and water alone, constant temperature (50°C), same extraction time....

This study was designed to test the null hypothesis that the different level of the dorms has a r... more This study was designed to test the null hypothesis that the different level of the dorms has a real effect on the quantitative and qualitative existence of the house dust mites (HDM). Also to determine the most important factors that control the distribution and colonization of HDM. The study was conducted at Jeddah city western Saudi Arabia. 12 dorms were tested; 6 hotels and 6 motels. The samples were collected twice a month along three months (Dec, Jan., Feb. 2009). Mites were separated using modified Berleses tunnel. Ten species of HDM were extracted from studied dwellings . The mite assembelage in motels was dominated by Dermatophagoides pteronyssinus (23.7%). In hotels to the mite collection was co - dominated by D. pteronyssinus (27.6 %) and D. farinae (21.8 %). The mean total individuals in motels was 5012 individuals per 50 gram s of dust in correspond to 2149 individuals per 50 gram s of dust in the hotels. Up to 66.6% of the motels had a population of more t han 100 indi...

House dust mites in clothing and bedding are the source of major allergen. Based on studies of De... more House dust mites in clothing and bedding are the source of major allergen. Based on studies of Dermatophagoides pteronyssinus only , weekly washing in hot water is recommended to kill dust mites and remove allergen from clothing and bedding (DiAnn et al. , 2002) . However, in the Saudi Arabia, washing is most often done in warm or cold water , and other mite species are involved. Most stages of D. pteronyssinus, Blomia trobicalis and Dermatophagoide farinae cannot survive when exposed to 45°C- 55°C for at least 48hrs ( Tovey et al,2001 ; Edrees , 2009 a,b). Survival of the house dust mite D.farinae and D.pteronyssinus at specific ambient conditions , was undertaken to determine the possibility of chemical and herbal detergent and temperature manipulation as a control method .Three studies were performed. The first compared combinations of 2 laundry agents and 2herbal agents (Nabk leaf, Bay Laurel solutions , detergents with enzymes, and detergent without enzymes) and water alone , c...

Journal of King Abdulaziz University-Science, 2002

Journal of Animal Health and Production, 2020

The honey bee, Apis mellifera L., is critical not only for honey production but also for crop pol... more The honey bee, Apis mellifera L., is critical not only for honey production but also for crop pollination. The honey bee mite Varroa destructor is currently a worldwide parasite of the honey bee. This study aims to determine the effect of infestation with V. destructor in both Kingdom Saudi Arabia (KSA) and Egypt, demonstrate applications of biopesticides such as (Metarhizium anisopliae, Beauveria bassiana and Paecilomyces fomosoroseas)and the delivery of the fungus into the hives. Data showed significant differences between treatments with M. anisopliae, B. bassiana and P. fomosoroseas. results were significant after 7 days of application and 14 days of application in both Egypt and KSA, Daily mite mortality was significantly different between the hives before and after the applications of the fungus. Also, there were significant differences between treatments with fungus in workers body weights. Scanning electron microscope image showed fungal penetration hyphae through stigma and...

Cureus, 2021

Myasthenia gravis is an autoimmune disease that affects the neuromuscular junction. It causes gen... more Myasthenia gravis is an autoimmune disease that affects the neuromuscular junction. It causes generalized muscle weakness that may include the respiratory muscles, potentially leading to a medical emergency known as a myasthenic crisis. This is a case report of a rare incident of a myasthenia gravis exacerbation after administration of the oral antipsychotic risperidone to a schizophrenic patient. Few similar cases have been reported. Although rare, such incidents are dangerous as physicians could easily confuse myasthenia gravis symptoms with extrapyramidal side effects of antipsychotics. This concern should be addressed not just with risperidone but rather with any other antipsychotics that exhibit anticholinergic side effects.

The spider mites Tetranychus urticae Koch and Tetranychus evansi Baker and Pritchard are importan... more The spider mites Tetranychus urticae Koch and Tetranychus evansi Baker and Pritchard are important pests of horticultural crops. This study was conducted to determine the effect of some bioagentsa gainst Tetranychus urticae. Our results the data showed that the lowest median lethal concentration (LC50) appeared non-significant on the mean number of T. urticae through different times Whereas, the high concentration of bioagents culture (100%) appeared significant increase inhibit the growth of Tetranychus urticae adult after 24 and 120 hours. that mortality percentage of Tetranychus urticae after 24, 48, 72. 96. 120 and 144 h respectively affected by 50 % and 100% culture of bioagents culture. Mortality ranged from 0 to 62 % during different time by 50 % culture of bioagents culture .Beauveria bassiana and serratia (Sm) recorded highly mortality percentage at different times. On the other hands, Mortality ranged from 0 to 55 % during different time by 50 % culture of bioagents cultur...

Ticks are obligate ectoparasites, which infest every major vertebrate animal group, including man... more Ticks are obligate ectoparasites, which infest every major vertebrate animal group, including man and feed on their blood. They are vectors of numerous pathogenic viruses, rickettsia, bacteria, protozoa and filaria. Many of these pathogens are transmitted to the host either directly during the tick bite or indirectly by contact with coxal fluids, excreta, or crushed bodies. The different stages in the life cycle of Hyalomma dromedarii were investigated under laboratory conditions. The larval, nymphal and adult ticks were all fed on rabbits at 25-27°C, 50% relative humidity (RH) and exposed to daylight. All free-living stages were maintained in an incubator at 26 ± 1°C, 70% RH and daylight conditions. The life cycle of H. The results confirmed the significant correlation between the mortality of the mature and immature stages and the temperature and the relative humidity.

International Journal of Zoological Investigations, Dec 31, 2019

The morphological characters of honeybees were measured using a Scan Photo technique (SPT) that i... more The morphological characters of honeybees were measured using a Scan Photo technique (SPT) that involves the use of a stereo binocular microscope and Photoshop program combined together. The body parts of a honeybee worker were scanned as images after they have been dissected. Photoshop program was used to view the images and their characters were measured using the ruler of the software program. While measuring the chosen morphometric characters, a significant difference was observed when the SPT and using a binocular microscope were compared. The measurements of 7 morphological characters of honeybee workers from nectar-feeding colonies were compared with those of Pepsi cola feeding colonies. There are more than 24 different subspecies of honeybees (Apis mellifera) classified based on their morphological characteristics. As a result, morphological characteristics are usually considered when classifying honeybees. Many authors for various reasons have used body morphological characteristics as well as sets of wings to classify subspecies of honeybees. Such characteristics have been defined overtime and sourced from diverse studies. Of all body morphological characteristics studied so far, wing venation characteristics have been given more attention. Up to now in Saudi Arabia, there are no specific review articles that focus mainly on Apis mellifera jemenitica body morphological characteristics. Consequently, information gathered from sampling and measurement methods, and factors affecting these characteristics especially mouthparts is to recognize the possibility of finding any changes in configuration as a result of feeding on soft drink. The morphology and functional anatomy of the mouthparts are examined by dissection, light microscopy, and supplemented by feeding type observations. This manuscript focuses on the differentiation of the proboscis which is formed by the glossa, in context with feeding from natural nectar and soft drink. In the literature, morphological innovations have been described for insects, particularly forbees.These innovations are critical for the production of differentiation in proboscis such as proboscis hair formation and modification. The present study showed that the proboscis of honeybees feeding on Pepsi is wider, thicker and very hairy compared to the natural feeding honeybee's proboscis. The morphological structures of the head, proboscis, hind leg, and wings were measured for the two groups of bees, the first naturally nourished with nectar, and the second feeding on the drink Pepsi Cola. The results showed significant differences in nectar and Pepsi feeding in different length measurements of head (

Caro editor, O diagnóstico definitivo de tuberculose pleural (TP) depende da demonstração do baci... more Caro editor, O diagnóstico definitivo de tuberculose pleural (TP) depende da demonstração do bacilo Mycobacterium tuberculosis em amostras de expetoração, líquido pleural ou biópsia pleural (BP).1 No entanto, a TP é muitas vezes um diagnóstico não confirmado, baseado em critérios bioquímicos ou histológicos.1,2 O objetivo deste estudo foi analisar a contribuição da BP cega no diagnóstico de TP. Doentes submetidos a BP cega no Hospital de Braga, entre 2006 e 2011, foram identificados a partir de uma base de dados de registos de biópsias pleurais. Características do líquido pleural e resultados das BP foram analisados retrospetivamente através da revisão de processos clínicos. Doentes com derrame pleural exsudativo submetidos a BP cega foram incluídos no estudo. Casos com análise bioquímica, citológica ou microbiológica incompleta do líquido pleural foram excluídos. Culturas da BP não foram incluídas na análise por dados insuficientes. A presença de adenosina desaminase (ADA) >70 U...

European Respiratory Journal, Sep 1, 2013

Body: Introduction: Pleural tuberculosis (TB) is often a non confirmed diagnosis, based on bioche... more Body: Introduction: Pleural tuberculosis (TB) is often a non confirmed diagnosis, based on biochemical or histological criteria. Objectives: Clinical and demographic characteristics associated with a diagnosis of pleural TB. Value of blind pleural biopsy (PB) in the investigation of pleural effusions and its contribution to the TB confirmation or exclusion. Methods: Retrospective analysis of patients submitted to blind PB in a 6-year period. Clinical and demographic data, characteristics of pleural fluid and results of PB were reviewed. Biochemical criteria: ADA >70 U/L and lymphocyte/neutrophil ratio >0.75 in pleural fluid. Results: We performed a total of 272 PB in 240 patients, 65,1% male with a median age of 67 years. 69 cases were excluded because of incomplete study. In multivariate analysis patients who were younger (p<0,001), had fever (p=0,001) and with unilateral pleural effusion (p=0,04) had higher risk of having a pleural TB. Final diagnosis of pleural TB was established in 39/203 cases (19,2%). In the 22 cases with biochemical criteria of pleural TB, one had another diagnosis (lymphoma). In the 181 cases without biochemical criteria, the diagnosis of pleural TB was established in 18 cases (9,9%): PB identified granulomas in 9, contributing yet to another diagnosis in 35 (19,3%). The sensitivity, specificity, PPV and NPV of the biochemical criteria for the diagnosis of pleural TB was, respectively, 52,9%, 97,6%, 81,8% and 91,2%, and the combination of PB with biochemical criteria was, respectively, 79,4%, 97,6%, 87,1% and 95,9%. Conclusion: In this sample, the performance of blind PB associated with the analysis of pleural fluid obtained a good sensitivity and excellent specificity for the diagnosis of pleural TB.

Introduction: The P. aeruginosa pneumonia acquired in a non-hospital environment (Community-Acqui... more Introduction: The P. aeruginosa pneumonia acquired in a non-hospital environment (Community-Acquired Pneumonia [CAP] and Healthcare-Associated Pneumonia [HCAP]) is a growing threat whose correct diagnosis can lead to a better outcome and prognosis. Purpose: Assessment of the epidemiological, clinical, radiological and therapeutic approach of patients with Pseudomonas pneumonia acquired in a non-hospital environment. Methods: Retrospective analysis of patients admitted with of P. aeruginosa CAP and HCAP according to ATS/IDSA 2005 criteria. Results: Sixty eight patients were included: 10 (14.7%) with CAP and 58 (86.3%) with HCAP. Mean age was 75.4 years and 58,8% were males. Sixty patients (88.2%) were partially or totally care dependent. Comorbidity index ( Charlson comorbidity index adjusted for age) was ≥ 6 in half of the sample. At hospital admission, patients presented a CURB-65 score ≥ 3 in 42 patients (61.7%) and a Pneumonia Severity Index IV/V in 63 patients (92.6%).Chest radiography showed alveolar infiltrates in 66 patients: lower lung lobes predominance (68,2%) and focal pattern (59.1%). Identification of the infectious agent was mostly performed in microbiological examination of sputum (58 patients, 85.3%); in blood cultures and BAL/bronchial aspirate, respectively, in 8 (11.8%) and 7 (10.3%) patients. Initial antibiotic regimen was changed in 37 patients (54.4%) and had Pseudomonas coverage in 41 patiens (60.3%), with Piperacillin/Tazobactam being the first choice in 22 patients (53.6%). The mortality rate was 13.2%. Conclusion: P. aeruginosa pneumonia acquired in a non-hospital environment, is associated to patients with high level of dependency and comorbidities and usually presents with clinically severe disease.

In this study, three types of nutrition intended for infants were selected, treated with storage ... more In this study, three types of nutrition intended for infants were selected, treated with storage mites, Suidasia nesbetti were raised in the laboratory in a suitable environment, then culturing 100 mites in each sample and preserving them in different places in each selected kitchen at temperature and humidity varying relatively for a period of six months including autumn and winter. Fifteen houses having the same characteristics were chosen in terms of the region, age of the building, standard of living, the level of hygiene in the house, number of family members which on average was eight members per family home, and the level of health education. The samples were examined after opening directly to make sure of the safety and suitability for the secure feeding, and the examination was conducted periodically, every two weeks after storage to estimate the population dynamics of the mites with increasing duration for storage by one gram of each sample at the various houses and places...

Pistacia Lentiscus and Boswellia Carterii (Raw), which are widespread in the popular culture and ... more Pistacia Lentiscus and Boswellia Carterii (Raw), which are widespread in the popular culture and sold by spice shops for incensing houses, are used for fighting House Dust Mites (HDM), for the purpose of identifying their impact on minimizing the prevalence of HDMs. The field experiment was conducted in thirty rooms (separate fifteen rooms for incensing by using P. lentiscus, and the remaining fifteen rooms for incensing by B. Carterii), through using traditional incense burner, and placing the tested substance in clay crucible on the flame for quarter hour on daily basis during the first week, 30 minutes during the second week, 45 minutes during the third week, and 60 minutes during the fourth week. Surveyed rooms were prepared under similar conditions with regard to living standard and type of furniture containing ceramics covered with thick carpets, windows were tightly closed and air was denied access throughout the study period (one month), except for once a week (the seventh d...

House dust mites in clothing and bedding are the source of major allergen. Based on studies of De... more House dust mites in clothing and bedding are the source of major allergen. Based on studies of Dermatophagoides pteronyssinus only, weekly washing in hot water is recommended to kill dust mites and remove allergen from clothing and bedding (DiAnn et al., 2002). However, in the Saudi Arabia, washing is most often done in warm or cold water, and other mite species are involved. Most stages of D. pteronyssinus, Blomia trobicalis and Dermatophagoide farinae cannot survive when exposed to 45°C55°C for at least 48hrs. Survival of the house dust mite D. farinae and D.pteronyssinus at specific ambient conditions, was undertaken to determine the possibility of chemical and herbal detergent and temperature manipulation as a control method.Three studies were performed. The first compared combinations of 2 laundry agents and 2herbal agents (Nabk leaf, Bay Laurel solutions, detergents with enzymes, and detergent without enzymes) and water alone, constant temperature (50°C), same extraction time....

This study was designed to test the null hypothesis that the different level of the dorms has a r... more This study was designed to test the null hypothesis that the different level of the dorms has a real effect on the quantitative and qualitative existence of the house dust mites (HDM). Also to determine the most important factors that control the distribution and colonization of HDM. The study was conducted at Jeddah city western Saudi Arabia. 12 dorms were tested; 6 hotels and 6 motels. The samples were collected twice a month along three months (Dec, Jan., Feb. 2009). Mites were separated using modified Berleses tunnel. Ten species of HDM were extracted from studied dwellings . The mite assembelage in motels was dominated by Dermatophagoides pteronyssinus (23.7%). In hotels to the mite collection was co - dominated by D. pteronyssinus (27.6 %) and D. farinae (21.8 %). The mean total individuals in motels was 5012 individuals per 50 gram s of dust in correspond to 2149 individuals per 50 gram s of dust in the hotels. Up to 66.6% of the motels had a population of more t han 100 indi...

House dust mites in clothing and bedding are the source of major allergen. Based on studies of De... more House dust mites in clothing and bedding are the source of major allergen. Based on studies of Dermatophagoides pteronyssinus only , weekly washing in hot water is recommended to kill dust mites and remove allergen from clothing and bedding (DiAnn et al. , 2002) . However, in the Saudi Arabia, washing is most often done in warm or cold water , and other mite species are involved. Most stages of D. pteronyssinus, Blomia trobicalis and Dermatophagoide farinae cannot survive when exposed to 45°C- 55°C for at least 48hrs ( Tovey et al,2001 ; Edrees , 2009 a,b). Survival of the house dust mite D.farinae and D.pteronyssinus at specific ambient conditions , was undertaken to determine the possibility of chemical and herbal detergent and temperature manipulation as a control method .Three studies were performed. The first compared combinations of 2 laundry agents and 2herbal agents (Nabk leaf, Bay Laurel solutions , detergents with enzymes, and detergent without enzymes) and water alone , c...

Journal of King Abdulaziz University-Science, 2002

Journal of Animal Health and Production, 2020

The honey bee, Apis mellifera L., is critical not only for honey production but also for crop pol... more The honey bee, Apis mellifera L., is critical not only for honey production but also for crop pollination. The honey bee mite Varroa destructor is currently a worldwide parasite of the honey bee. This study aims to determine the effect of infestation with V. destructor in both Kingdom Saudi Arabia (KSA) and Egypt, demonstrate applications of biopesticides such as (Metarhizium anisopliae, Beauveria bassiana and Paecilomyces fomosoroseas)and the delivery of the fungus into the hives. Data showed significant differences between treatments with M. anisopliae, B. bassiana and P. fomosoroseas. results were significant after 7 days of application and 14 days of application in both Egypt and KSA, Daily mite mortality was significantly different between the hives before and after the applications of the fungus. Also, there were significant differences between treatments with fungus in workers body weights. Scanning electron microscope image showed fungal penetration hyphae through stigma and...