Hassan Y.A.H. Mahmoud

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Review of two viral agents of economic importance to the equine industry (equine herpesvirus‐1, and equine arteritis virus)

Equine Veterinary Education (2022)

Hassan Y.A.H. Mahmoud Samer S. Fouad Yahia A. Amin

Summary Equine herpesvirus type‐1 (EHV‐1) and equine arteritis virus (EAV) are infectious agents that cause serious health risks to horse populations and are disbursed worldwide, which can lead to significant financial losses. In addition to being responsible for abortion and neonatal death, these viruses are associated with respiratory illness. Although previous research and reviews have been written on these viruses, both viruses still affect horse populations around the world and the vaccines currently available are not completely protective, especially against EHV‐1 and equine herpes myeloencephalopathy (EHM). Moreover, EAV is considered a threat to the $102 billion equine industry in the United States. As a result, these viruses represent a huge threat to the horse industry and efforts geared towards preventing the outbreak of the disease are strongly encouraged. For this reason, updates about these viruses are necessary and require more and more discussion on the nature and characteristics of these viruses to know how to overcome them. Prevention and control of abortion and neonatal foal death caused by each of the two viruses depend on appropriate management strategies coupled with prophylactic vaccination. This review presents the latest detailed information on EHV‐1 and EAV from several aspects such as transmission, clinical signs, pathogenesis, latest developments on the treatment of the diseases, vaccination, and finally challenges and future perspectives. The information presented herein will be useful in understanding EHV‐1 and EAV and formulating policies that can help to limit the spread of these viruses within horse populations.

Equine herpesvirus 1

10.1111/eve.13649

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Citations (3)

Primary lymphoma

Radiopaedia.org (2023)

Hassan Y.A.H. Mahmoud

Primary (astronomy)

10.53347/rid-171821

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Citations (0)

Discovery of Colpodella spp. in ticks (Hyalomma dromedarii) infesting camels in southern Egypt

Ticks and Tick-borne Diseases (2024)

Ahmed M. Soliman Hassan Y.A.H. Mahmoud Tatsuro Hifumi Tetsuya Tanaka

In Egypt, tick-borne diseases pose a significant threat to human and animal health, and the threat to dromedaries (Camelus dromedarius), the country's dominant camelid species, is of particular concern. These animals are frequently infested with ticks, and may thus develop tick-borne diseases or become reservoirs of tick-borne pathogens. However, there is a paucity of data on tick infestation in Egyptian camels, especially in the south of the country. Accordingly, we aimed to determine the prevalence of tick infestation in southern Egyptian camel populations (in Luxor and Aswan governorates), and identify the hemoprotozoan parasites carried by camel-infesting ticks. Camels were checked for ticks during veterinary examination at quarantine and household checks, and ticks were collected from infested camels for species identification using morphological examination and PCR analyses. Tick and hemoprotozoan species were identified using Basic Local Alignment Search Tool analysis with subsequent confirmation in phylogenetic analyses. All camel-infesting ticks belonged to the species Hyalomma dromedarii, and were clustered with ticks of this species previously found in Egypt in a phylogenetic tree based on the 16S rRNA gene. Molecular analysis targeting the 18S rRNA gene revealed the presence of hitherto undetected hemoprotozoan parasites, Colpodella spp., in 30/297 (10.1 %) camel-infesting ticks. In phylogenetic analysis, these Colpodella spp. were highly homologous (94-98.6 %) with Colpodella spp. previously deposited in GenBank with accession numbers OQ540590Q, MH208621, and GQ411073, which relate to Colpodella spp. previously detected from Haemaphysalis longicornis, Rhipicephalus haemaphysaloides, and humans in China. PCR analyses with spherical body protein-4 (SBP-4) gene-specific primers revealed Babesia bovis in 16/297 (5 %) of camel-infesting ticks, however, Babesia bigemina and Theileria annulata were not detected. Here, we report the first detection of Colpodella spp. in H. dromedarii in Egypt. Further epidemiological studies are needed to assess the risk to camels and humans, and the transmission dynamics. Based on the high tick infestation rates in Egyptian camels and the identification of previously unreported protozoan hemoparasites in ticks, we consider that the dromedary should be subject to surveillance as a sentinel species for tick-borne diseases in Egypt. Our findings underline the need for surveillance and collecting data on lesser known pathogens circulating in camel-infesting ticks, as part of a public health strategy for dealing with tick-borne diseases in Egypt.

Hyalomma

10.1016/j.ttbdis.2024.102352

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Citations (2)

Molecular detection and characterization of Theileria annulata, Babesia bovis, and Babesia bigemina infecting cattle and buffalo in southern Egypt

Parasite Epidemiology and Control (2024)

Hassan Y.A.H. Mahmoud Abdelrahman A. Rady Tetsuya Tanaka

Tick-borne diseases have a major adverse effect on livestock worldwide, causing enormous economic losses in meat and milk production as well threatening animal and public health. In this study, we aimed to detect and characterize piroplasms isolated from cattle and buffalo in southern Egypt, using molecular techniques. Three hundred blood samples were collected from cattle and buffalo in two governorates in southern Egypt. All 300 samples (100%) were confirmed to contain DNA, as they exhibited bands of bovine

Babesia bovis

Babesia bigemina

Theileria

10.1016/j.parepi.2024.e00340

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Citations (1)

Different Control Strategies for Converter Based DC Energy Transmission in Offshore Wind Power: A Literature Survey

Hassan Y.A.H. Mahmoud Ahmed H. Besheer Hany M. Hasanien Almoataz Y. Abdelaziz

This paper reviews the control techniques and operational behavior of a DC energy transmission system tied with an offshore wind field using voltage source converter based high voltage direct current topologies to highlight the state of the art on different system structures, and its controllers' schemes approaches. Firstly, the technical features, configurations and technologies of VSC-HVDC for offshore located wind farm are cataloged and summarized. This includes a short discussion for the wind turbine mathematical modeling and the different driving generators types. The Survey concentrates on the recent control strategies and controller schemes development specifically for regulating the power flow control objective in VSC connected to the electric network in steady state conditions. Finally, the paper concludes with identifying the major controllers' structures and techniques that used in VSC based HVDC transmission system to enable resilience integration of the offshore wind farm to the existing power network. The surveyed controllers' techniques in this work offer an effective enhancement in many other technical issues like fluctuation of voltage, harmonics, flicker phenomena, and long distance transmission. This work may serve as a comprehensive form of reference for any forthcoming advancement in the design concept of the VSC based HVDC.

High-voltage direct current

Transmission system

10.1109/mepcon.2018.8635204

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Citations (6)

Performance Analysis and Comparison of Pre-Trained CNN in Bearing Fault Diagnostics

Xinyi Ma Jie Liu Hassan Y.A.H. Mahmoud Madhav Mishra

10.1109/phm61473.2024.00080

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Molecular detection and characterization of Anaplasma marginale and Babesia canis vogeli infecting dogs in Luxor, Egypt

Scientific Reports (2024)

Hassan Y.A.H. Mahmoud Moshera S. Shahat Ragab M. Fereig Alsagher O. Ali Walaa F. A. Emeish

Abstract Tick-borne diseases in animals are increasing rapidly worldwide, but there is insufficient information about tick-borne diseases infecting dogs in southern Egypt. Thus, in the current study, we detected the presence of Anaplasma marginale (A. marginale) and Babesia canis vogeli ( B. canis vogeli ) in the blood of dogs. The results revealed that 4/100 (4%) were positive, and a higher infection rate was found in males (75%), than females (25%). The phylogenetic analysis for the major surface protein 4 ( msp4 ) gene in this study was compared with amplicons separate from other reported isolates with alignment by identity 100% with cattle and camels from Egypt, and the phylogenetic analysis for the B. canis vogeli small subunit ribosomal RNA ( SSU rRNA ) gene in this study identified identity by 99.89% with dogs from Egypt. This report is considered the first report in southern Egypt about A. marginale in dogs based on the sequence analysis of the msp4 gene, providing new data for the classification and identification of A. marginale in dogs compared to A. marginale isolated from other animals in southern Egypt.

Babesia canis

Amplicon

10.1038/s41598-024-67009-6

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Citations (1)

Epidemiology and serological detection of Rift Valley Fever disease in farm animals in southern Egypt

Onderstepoort Journal of Veterinary Research (2020)

Hassan Y.A.H. Mahmoud Alsagher O. Ali

In this study, the serological surveillance of Rift Valley Fever virus (RVFV) in southern Egypt was carried out for 460 serum samples collected from domestic animals (unvaccinated), including cattle, sheep, goat, camel and donkey reared in three different provinces (Qena, Luxor and Aswan). Enzyme linked immunosorbent assay (ELISA) was used to detect RVFV antibodies. The results showed that 97 out of 460 animals were positive by using blocking ELISA. The percentage of RVFV infection in cattle, sheep, goat, camel and donkey was 5.55%, 65.21%, 14.44%, 20.65% and 0%, respectively. Geographical distribution and breeding system were taken into consideration for RVFV infection in these animals. The most prevalent type of infection was identified in intensive breeding farms systems (27.63%), and then in individual breeding systems (11.68%). Qena had a higher infection rate of RVFV (23.55%), in comparison to Aswan and Luxor (20.65% and 14.14%, respectively). Marked seroprevalence recorded in this study indicates a high incidence of infection in sheep (65.21%) and camel (20.65%); this necessitates the application of more effective strategies to control these types of infections in Egypt. This study provides a concise picture about the RVFV disease in southern Egypt. We need more similar studies targeted to clarify the reliable epidemiological status of RVFV disease in southern Egypt and other localities.

Rift Valley Fever

Seroprevalence

10.4102/ojvr.v87i1.1877

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Citations (1)

Hybrid cuckoo search algorithm and grey wolf optimiser‐based optimal control strategy for performance enhancement of HVDC‐based offshore wind farms

IET Generation Transmission & Distribution (2020)

Hassan Y.A.H. Mahmoud Hany M. Hasanien Ahmed H. Besheer Almoataz Y. Abdelaziz

The hybridisation of two or more algorithms is recently emerging to detect superior solutions to the optimization troubles. In this study, a new hybrid cuckoo search algorithm and grey wolf optimiser (CSA–GWO) optimisation technique is exercised and exhibited to optimally design and tune the controller parameters installed in the voltage source converter (VSC) of an offshore wind farm (OWF). One of the widely used control strategies for VSC is the proportional–integral (PI) closed-loop control system. The new hybrid optimisation algorithm is used to design and tune the PI controllers' parameters to improve the performance of OWF. It shall be mentioned that these parameters are usually hard to obtain owing to the high level of embedded non-linearity in such energy systems. The performance of such optimally designed PI controllers is presented in both dynamic and transient conditions. To examine the realistic stability of the proposed algorithm, real wind speed pattern has been captured from Egypt wind farm at Zafarrana and simulated. The obtained results from this new hybrid optimisation CSA -GWO control system reflect its superiority over other traditional algorithms, such as genetic algorithm, especially during symmetrical and unsymmetrical faults. CSA–GWO algorithm was examined using MATLAB/Simulink.

Cuckoo search

Transient (computer programming)

10.1049/iet-gtd.2019.0801

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Citations (50)

Isolation and characterization of Cepa2, a natural alliospiroside A, from shallot ( Allium cepa L. Aggregatum group) with anticancer activity

Plant Physiology and Biochemistry (2017)

Mostafa Abdelrahman Hassan Y.A.H. Mahmoud Magdi A. El‐Sayed Shuhei Tanaka Lam‐Son Phan Tran

Viability assay

10.1016/j.plaphy.2017.05.006

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Citations (39)