Alaa Sayed Abou-Elhamd

Assiut University · Cell and tissues

Abstract Endometrial remolding and angiogenesis are critical events that occur during pregnancy in order to establish uteroplacental vascular communication. This study investigated the role of uterine telocytes (TCs) in pregnancy. We analyzed the distribution of TCs and morphological changes in the endometrium of the gravid rabbit uterus at differe...

Ethnopharmacological relevance Syzygium aromaticum L. volatile oil (clove oil) has been traditionally used for various stomach disorders including inflammatory conditions. Eugenol is the major constituent present in the volatile oil, and it has been established as a gastroprotective agent through many published studies, but the exact and complete m...

The current study investigated the morphological, histochemical, and immunohistochemical characteristics of alarm cells and their precursors in ruby-red-fin shark (rainbow shark), Epalzeorhynchos frenatum (Teleostei: Cyprinidae). Precursor alarm cells were shown to be small, cuboidal, pyramidal, or round in shape, with eosinophilic cytoplasm, resti...

Bulbourethral glands (Cowper´s glands) are one of the accessory genital glands, which play an important role in the cleaning and neutralizing of the acidic environment of the urethra prior to ejaculation. The aim of the present work is to study the morphological features of the bulbourethral glands of donkey by using histological and histochemical...

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

Khat (Catha edulis (Vahl) Endl.) is an evergreen flowering shrub used as a stimulant in many regions worldwide including East Africa, the Arabian Peninsula, Europe, and the United States. Chewing leaves of khat induces excitement and euphoria, which are primarily attributed to two major constituents, cathinone and cathine. Khat also contains other...

The present study aimed at analysing the effect of Khat plant extract on rat testicular development. Thirty‐two weaned male albino rats (4 weeks old) were divided into four groups consisting of eight animals each. While control animals received normal saline, rats of groups I, II and III received 100, 200 and 300 mg Khat extract per kg body weight...

The current study aimed to characterize different stages of rodlet cells using light microscopy, immunohistochemistry, and transmission electron microscopy. Granular rodlet cells have a distinct granular cytoplasm. Transitional rodlet cells had distinct capsules, and immature granules. Mature rodlet cells were pear-shaped and had elongated granules...

The current study investigated telocytes (TCs) in the intestinal bulb of Grass carp using light microscopy (LM), Transmission electron microscopy (TEM), scanning electron microscopy, and immunohistochemistry (IHC). By LM, TCs were distinguished by the typical morphological features that had a cell body and telopodes using HE, toluidine blue, methyl...

The objective of this study was to describe the histological and histochemical structure of the seminal vesicles during different seasons of the year. The specimens were collected from the seminal vesicles of 24 sexually mature apparently healthy male donkeys (5 to 7 years of age) during different seasons of the year. The seminal vesicles (Vesicula...

The objective of this study was to describe the histological and histochemical structure of the seminal vesicles during different seasons of the year. The specimens were collected from the seminal vesicles of 24 sexually mature apparently healthy male donkeys (5 to 7 years of age) during different seasons of the year. The seminal vesicles (Vesicula...

Ethnopharmacological relevance Boesenbergia rotunda (L.) Mansf. Kulturpfl., previously known as Boesenbergia pandurata (Family: Zingiberaceae) is a ginger species, locally known as fingerroot. It is an integral part of Southeast Asian traditional medicine in alleviating many gastrointestinal disorders such as flatulence, carminative, stomach ache,...

Studying the dermal skeleton in fish is valuable for phylogenetic specification. The current study describes the detailed structure of the plecostomus dermal skeleton, including its morphogenesis and distribution in the skin. The denticles have a crown and a basal part and are embedded in bony depressions, to which they are attached by denticle lig...

Curry leaves (Murraya koenigii) is a leafy spice used in Indian cookery for its fragrant aroma. There are many bioactive functional compounds has been identified, among these carbazole alkaloids has...

The present study was carried on the pelvic urethra of 32 sexually mature male donkeys. 5μm sections were prepared from the samples and stained with different stains to show the different structures of the pelvic urethra. Scanning electron microscopic studies were performed on the lumen of the pelvic urethra to show the different shape of the ureth...

27 Aug 2019 --- Popular dietary supplement ginkgo biloba extract and magnetized water may offer sometherapeutic benefit in fighting Type 2 diabetes, according to a study led by the University of Cincinnati (UC)College of Medicine. In the study, both ginkgo biloba and magnetized water were found to improve theantioxidant status associated with Type...

Introduction: Type 2 diabetes (T2D) is a widely distributed disease that affects large population worldwide. This study aimed to verify the role of Ginkgo biloba (GB) extract and magnetized water (MW) on the survival rate and functional capabilities of pancreatic β-cells in type 2 diabetic rats. Materials and methods: T2D was induced by feeding...

Progesterone plays an important role in the reproductive function and follicular development in mammals. The aim of the present study was to examine the localization of progesterone receptor alpha (PRA) in ovary of pseudopregnant rabbit by immunohistochemical methods. Samples were collected from 14 h. to 18 days of pseudopregnancy. At the first sta...

Catha edulis Forsk leaves (Khat) is a flowering plant. A high proportion of the adult population in the Arabian Peninsula and the Horn of Africa chews it for its mild stimulant effect. The aim of the current study was to investigate the embryotoxic and teratogenic effects of the Khat extract using 60 female pregnant rats. These were divided to a Kh...

This study was made on 24 camel fetuses of crown-rump vertebral length (CVRL) ranging from 10.5 cm to 105 cm CVRL (94–352 days old). These camel fetuses were classified into three groups representing the three trimesters of prenatal life. During the first trimester (94–142 days), lingual papillae (circumvallate and lentiform papillae) were demonstr...

It is well known that camels can live in severe environmental conditions and have ability to regulate its body temperature in such conditions. Previous studies indicated that skin is playing a pivotal role in thermoregulation and adaptation of the body to the surrounding environment. The aim of the current study is to investigate the role of the sw...

Objectives: The aim of this study was to investigate the histomorphological structure and functional significance of various special regulatory devices of the vascular terminal branches of the skin in one-humped camel (Camelus dromedarius). Materials and Methods: Skin samples from different body parts (e.g., front, neck and shoulder, back, belly, c...

Medicinal plants are effective in controlling plasma glucose level with minimal side effects and are commonly used in developing countries as an alternative therapy for the treatment of type 1 diabetes mellitus. The aim of this study is to evaluate the potential antidiabetic and antioxidant impacts of Balanites aegyptiaca and Petroselinum sativum e...

The early prenatal development of the tongue of the dromedary resemble in general outline that previously described in other mammals, however species specific differences have not been recognized yet. So the aim of this study to describe the early stages of tongue development in camel by using light and scanning electron microscopes. The current st...

Klhl31isamemberoftheKelch-likefamilyinvertebrates,whicharecharacterizedbyanamino-terminal broad complex tram-track, bric-a-brac/poxvirus and zinc finger (BTB/POZ)domain,carboxy-terminal Kelchrepeatsandacentrallinkerregion(Backdomain).Indevelopingsomites Klhl31 is highlyexpressed in themyotomedownstreamofmyogenicregulators(MRF),anditremainsexpressed...

The habit of Khat-chewing has prevailed for centuries among populations in the horn of Africa and the Arabian Peninsula. It represents a major socio-economic problem in many countries. The biological effects of Khat on the kidney are inadequately investigated. The aim of this study is to investigate the histological and morphological changes in kid...

Klhl31 is a member of the Kelch-like family in vertebrates, which are characterized by an amino-terminal broad complex tram-track, bric-a-brac/poxvirus and zinc finger (BTB/POZ) domain, carboxy-terminal Kelch repeats and a central linker region (Back domain). In developing somites Klhl31 is highly expressed in the myotome downstream of myogenic reg...

Objective: The aim of this study was to examine the morphological structure of the harderian gland of sheep by using light and electron microscopy, and the effect of melatonin administration on the secretory activity of the gland. Methods: This experiment was performed on fifteen Soay rams aged 1.5 years. Histochemical studies were performed by usi...

The habit of Khat-chewing has prevailed for centuries among populations in the horn of Africa and the Arabian Peninsula. The biological effects of Khat on liver are inadequately investigated. The aim of this study is to investigate the histological and morphological changes in liver of rats after crude Khat extract treatment. The present study was...

The objective of this study is to describe the histological and histochemical structure of the ampulla ductus defrentis during different seasons of the year. The experiment was carried out on the ampulla of the deferent duct of 24 sexually mature apparently healthy male donkeys (5 to 7 years) distributed over the four seasons of the year. Both the...

The objective of this study is to describe the histological and histochemical structures of the prostate gland during different seasons of the year. The experiment was carried out on the prostate gland of 24 sexually mature apparently healthy male donkeys (5 to 7 years) distributed over the four seasons of the year. The prostate gland was enveloped...

The present work was carried out on 40 specimens of oesophaguses of both sexes of catfish (carnivorous fish) and grass carp (herbivorous fish) in order to observe the morphological and histological differences between the two species. Oesophagus of catfish was divided into 2 parts: anterior and posterior ones. The anterior part of the oesophagus of...

The present study was performed on the ampulla of the deferent duct of 24 sexually mature apparently healthy male donkeys (5 to 7 years) distributed over the four seasons of the year. The ampullary glands were branched tubulo-alveolar in type which they were opened in a central lumen. The luminal and the glandular epithelium were formed of principa...

Klhl31 is an orthologue of Drosophila Kelch and belongs to a family of Kelch-like proteins in vertebrates. Members of this family contain multiple protein domains, including an amino-terminal broad complex/tram-track/bric-a-brac (BTB) or poxvirus and zinc finger (POZ) domain, carboxy-terminal Kelch repeats and a central linker region. We show that...