Hamdy Rezk

Cairo University | CU · Department of Anatomy and Embryology

A single injection of platelet-rich plasma (PRP) or stromal vascular fraction (SVF) in treating neurological ailments suggests promise; however, there is limited evidence of the efficacy of combination therapy. This trial aimed to determine whether combining SVF and PRP could provide further therapeutic effects in treating multiple sclerosis (MS)....

The major efforts to improve feed conversion, increase the body weight and breast muscle yield of broilers have been focused on feeding and management at the post hatch period. However, incubation temperature is the most significant factor for the egg hatching rate, chick quality, and post hatch performance. Therefore, incubation factors affecting...

Background The testes are highly susceptible to the adverse effects of chemotherapy and radiation at all stages of life. Exposure to these threats mainly occurs during cancer treatment and as an occupational hazard in radiation centers. The present study investigated the regenerative ability of adipose-derived mesenchymal stem cells (ADMSCs) agains...

Background Multiple sclerosis (MS) is the most frequent non-traumatic neurological debilitating disease among young adults with no cure. Over recent decades, efforts to treat neurodegenerative diseases have shifted to regenerative cell therapy. Adipose tissue-derived stromal vascular fraction (SVF) comprises a heterogeneous cell population, conside...

Infertility is a serious medical, economic, and psychological problem in the society. Male factor infertility, due to defective spermatogenesis as a result of a failure in germ cell proliferation and differentiation, appears to be the cause of 25-50% of infertility cases. According to several surveys, testicular degeneration can be caused by a vari...

Background Cartilaginous disorders comprise a wide range of diseases that affect normal joint movement, ear and nose shape; and they have great social and economic impact. Mesenchymal stem cells (MSCs) provide a promising regeneration alternative for treatment of degenerative cartilaginous disorders. This study aimed to compare therapeutic potentia...

Multiple sclerosis (MS) is a progressive autoimmune demyelinating disease of the central nervous system. To date, there is no effective therapy for it. Our study aimed to determine the potential role of platelet-rich plasma (PRP) in the treatment of MS in cats. The current study was conducted on 15 adult Persian cats that were divided into three gr...

AB S T RA C T Magnetic resonance imaging (MRI) and computed tomography (CT) imaging modalities are invaluable for the diagnosis and treatment of neurological diseases. This study aimed to correlate the anatomical sectional data of the cats' brain to the sections obtained by both MRI and CT examination. The present work was conducted on four cats, 1...

Background Spinal cord injury (SCI) is a serious neurological spinal cord damage that resulted in loss of temporary or permanent function. However, there is even now no effective therapies for it. So, a new medical promising therapeutic hotspot over the previous decades appeared which was (Stem cell (SC) cure of SCI). Otherwise, animal models consi...

Background Cancer is a life-threatening disease that affects approximately 18 million individuals worldwide. Breast cancer is the most common female neoplasm globally with more than 276,480 new cases of invasive breast cancer expected to be diagnosed in women in the U.S. alone in 2020. Genetic and epigenetic factors play role in the carcinogenesis...

Embryonic thermal manipulation led to several modifications in molecular, physiological, and biochemical parameters which affect pre- and post-hatch growth performance. The current study aims to elucidate the onset and long-term effects of intermittent thermal manipulations (TM) during two-time windows, early/late, of embryogenesis in Japanese quai...

Cyclophosphamide is anticancer drug with a well-Known nephrotoxicity. This work was applied to study the lucrative antioxidant influence of metformin as co-therapy on the nephrotoxicity induced by cyclophosphamide in the treatment of different cancer diseases. Four groups of male Sprague Dawley rats were used; Control group (C) received single I.P....

Japanese quail embryo thermal manipulation was known as an effective protocol in improving post-hatching growth performance parameters and thermotolerance acquisition which alleviates heat stress during rearing. The current study aimed to evaluate the effects of high incubation temperature protocols (41°C for 3 hours / 3 successive days) during ear...

The present study aimed to investigate the effects of Bone marrow derived pancreatic progenitor cells (BM- PPCs) in diabetic rats. It was conducted on 30 adult male Sprague-Dawley rats weighing 200-220 g. They were divided into three groups: (a) Group 1 was the control group; (b) Group 2 was the diabetic (induced diabetic by a single intraperitonea...

The present study provides detailed anatomical description of the parotid and mandibular salivary glands of the one humped camel with their segmentation based on arterial blood supply and salivary ducts; to facilitate partial removal of the pathologic gland. The shape, position, relations and blood supply of both salivary glands with their ducts we...

The present study aimed to spot the light on the differences between the two milk systems of each quarter of the she camels' udder. Twelve mammary glands of lactating she camels (in mid-lactation) were dissected from the animals immediately after slaughter and prepared for different anatomical, histological, radiographical and ultrasonographical ev...

Key words: Anatomy, gill morphology, gill vessels, shovelnose ray fish. This present study was applied on shovelnose ray fish (Glaucostegus Typus) to investigate the anatomical features of gills and its vascular networks (arterio-arterial pathway) within the gill arch. Twleve fresh specimens were used by applying the intravascular injection techniq...

The syrinxes of twelve mature turkey weighting 3.5-5.5 Kg were examined. The syrinx was tracheobronchial type and formed by tracheosyringeal and bronchosyringeal cartilages. The tracheosyringeal cartilages were single, constituted the cranial median part of the syrinx and arranged in threegroups; the tympanum was the most cranial and formed by the...

The syrinxes of twelve mature turkey weighting 3.5-5.5 Kg were examined. The syrinx was tracheobronchial type and formed by tracheosyringeal and bronchosyringeal cartilages. The tracheosyringeal cartilages were single, constituted the cranial median part of the syrinx and arranged in threegroups; the tympanum was the most cranial and formed by the...

Endoscopy of the upper respiratory tract (URT) is one of the minimally invasive techniques used for diagnosis and treatment of diseases in horses. Training in the use of an endoscope follows an apprenticeship approach, with extensive practice needed to help achieve effective skills acquisition. The use of live animals for training presents the risk...

The present study was conducted on five adult, apparently healthy, cattle egrets. The birds were euthanized and the skeletons were prepared by the cold maceration method. The skeleton of the cattle egret characterized by very long peak, single occipital condoyle, large orbits with incomplete orbital septum and presence of scleral ossicles as well a...

In the present project, we used multimedia technology to develop a computer program demonstrating the surface anatomy of equine ' thoracic limb. Microsoft Power Point 2013 © was the container for the multimedia assets of the program. It involves explanatory text, images, video clips and audio narrations, in addition to questions and answers for stu...

The arterial blood supply of the wing in domestic fowl was studied to investigate the course and distribution of the subclavian artery as a trial to extend our knowledge on the vascular anatomy of poultry which had received a little attention in the field of veterinary comparative anatomy. The present work was carried out on eight adult, apparently...

Introduction: The Cattle Egret (Bubulcus ibis) is a cosmopolitan species of heron (family Ardeidae) found in the tropics, subtropics and warm temperate zones. It is the only member of the monotypic genus Bubulcus. Cattle egret is popular for its role in the bio-control of cattle parasites and land pests. Materials and Methods: The present study was...

The arterial blood supply of the wing in domestic fowl was studied to investigate the course and distribution of the subclavian artery as a trial to extend our knowledge on the vascular anatomy of poultry which had received a little attention in the field of veterinary comparative anatomy. The present work was carried out on eight adult, apparently...

The present study was carried out on ten adult freshly slaughtered, apparently healthy rabbits of both sexes. The animals were anesthetized and the common carotid arteries were cannulated and flushed with normal saline. Then animals were injected with colored gum milk latex. The arterial supply of the manus in the rabbit formed of dorsal and palmar...

The present study was conducted on 16 fresh cats' hind paws to in-vestigate the anatomical description of the arterial blood supply at the level below the tarsus, which con-sidered as the potential site for in-tra-operation hemorrhage and thrombus formation. Six cat hind paws with intravascular latex injec-tion, four limbs for surgical approach and...

The aim of the study was to compare the pattern and density of the vascular layer of testis in some farm animals. The study was conducted on 50 specimens (10 for each species). The collected specimens are divided into two equal groups; the first group is used for gum milk latex injection while the other group is prepared for corrosive cast techniqu...

The aim of the study was to compare the pattern and density of the vascular layer of testis in some farm animals. The study was conducted on 50 specimens (10 for each species). The collected specimens are divided into two equal groups; the first group is used for gum milk latex injection while the other group is prepared for corrosive cast techniqu...

The present study was carried out on eight adult, apparently healthy chickens of both sexes. The birds were slaughtered and the descend-ing aorta was cannulated and flushed with warm normal saline (0.9%). Then birds were injected with colored gum milk latex. The origin, course and distribution of the celiac artery were studied. The celi-ac artery o...

The present study was carried out on ten adult freshly slaughtered, apparently healthy rabbits of both sexes. The animals were anesthetized and the common carotid arteries were cannulated and flushed with normal saline. Then animals were injected with colored gum milk latex. The arterial supply of the manus in the rabbit formed of dorsal and palmar...