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Article ; Online: Bioinformatics Analysis of miR-181a and Its Role in Adipogenesis, Obesity, and Lipid Metabolism Through Review of Literature.

Hongfang, Guo / Khan, Rajwali / El-Mansi, Ahmed A

2023

Abstract: The miRNAs regulate various biological processes in the mammalian body system. The role of miR-181a in the development, progression, and expansion of cancers is well-documented. However, the role of miR-181a in adipogenesis; lipid metabolism; obesity; ... ...

Abstract	The miRNAs regulate various biological processes in the mammalian body system. The role of miR-181a in the development, progression, and expansion of cancers is well-documented. However, the role of miR-181a in adipogenesis; lipid metabolism; obesity; and obesity-related issues such as diabetes mellitus needs to be explored. Therefore, in the present study, the literature was searched and bioinformatics tools were applied to explore the role of miR-181a in adipogenesis. The list of adipogenic and lipogenic target genes validated through different publications were extracted and compiled. The network and functional analysis of these target genes was performed through in-silico analysis. The mature sequence of miR-181a of different species were extracted from and were found highly conserved among the curated species. Additionally, we also used various bioinformatics tools such as target gene extraction from Targetscan, miRWalk, and miRDB, and the list of the target genes from these different databases was compared, and common target genes were predicted. These common target genes were further subjected to the enrichment score and KEGG pathways analysis. The enrichment score of the vital KEGG pathways of the target genes is the key regulator of adipogenesis, lipogenesis, obesity, and obesity-related syndromes in adipose tissues. Therefore, the information presented in the current review will explore the regulatory roles of miR-181a in fat tissues and its associated functions and manifestations.
Language	English
Publishing date	2023-09-29
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	1193057-3
ISSN	1559-0305 ; 1073-6085
ISSN (online)	1559-0305
ISSN	1073-6085
DOI	10.1007/s12033-023-00894-w
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Article ; Online: Cellular patterning and cyto-architectural organization of the skin of electric catfish (Malapterurus electricus, Siluriformes) with a particular emphasis on its ampullary electroreceptor.

El-Mansi, Ahmed A / Rady, Ahmed M / Ibrahim, Esam H / ElBealy, Eman

Zoology (Jena, Germany)

2024 Volume 163, Page(s) 126159

Abstract: The functional morphology of the skin of Malapteruridae is presumably evolved to cope with a diversified range of ambient physiological, environmental, and behavioral conditions. Herein, we firstly characterized the microstructures and intriguing ... ...

Abstract	The functional morphology of the skin of Malapteruridae is presumably evolved to cope with a diversified range of ambient physiological, environmental, and behavioral conditions. Herein, we firstly characterized the microstructures and intriguing patterning of the skin of twelve adult electric catfish (Malapterurus electricus, Malapteruridae) using histological, histochemical, immunofluorescent, and ELISA standard methodology. The skin comprises three sequentially-oriented layers: the epidermis, dermis, and hypodermis with a significantly increased thickness of the former. The epidermis contains four types of cells: the surface epithelial cells, mucous cells, granular cells, and club cells. We defined distinctive ampullary electroreceptors in the outer epidermis that possess flask-shaped sensory crypt containing electroreceptor cells together with vertical collagen rods. Dermis and hypodermis are composed of connective tissue; however, the former is much more coarse and dense with comparable reactivity for Masson-Goldner trichrome (MT). Placing our data in the context of the limited body of previous work, we showed subtle changes in the expression of mucin subunits together with cytoskeletal fractions of collagens, myosin, F-actin, keratins, and tubulins. Taken as a whole, our results convincingly showed that the skin of M. electricus shares some structural similarities to other Siluriformes, however, it has some functional modifications that are implicated in protection, defense, and foraging behavior.
MeSH term(s)	Animals ; Catfishes/anatomy & histology ; Skin/anatomy & histology ; Epidermis
Language	English
Publishing date	2024-03-03
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1191401-4
ISSN	1873-2720 ; 0944-2006
ISSN (online)	1873-2720
ISSN	0944-2006
DOI	10.1016/j.zool.2024.126159
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Article ; Online: Microscopic Focus on the Thyroid Follicles of the One-Humped Camel (Camelus dromedarius).

Roshdy, Karam / Alsafy, Mohamed A M / El-Gendy, Samir A A / El-Mansi, Ahmed A / Rezk, Shaymaa

Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada

2024 Volume 30, Issue 2, Page(s) 382–391

Abstract: The microstructure of the thyroid gland of the one-humped camel (Camelus dromedarius) was described using morphometric, histological, immunohistochemical staining, and ultrastructural standard techniques. The follicular secretory units of the thyroid ... ...

Abstract	The microstructure of the thyroid gland of the one-humped camel (Camelus dromedarius) was described using morphometric, histological, immunohistochemical staining, and ultrastructural standard techniques. The follicular secretory units of the thyroid glands displayed comparable and variable sizes where the large follicles were situated at the peripheral margins; however, the small ones were located in the central region. Semisquamous epithelium (low cuboidal) lined the large thyroid follicles, while high cuboidal (columnar) epithelium lined the small ones. Our electron microscopic findings revealed that the low-sized cuboidal follicular cells lack organelles and are hypoactive. The high cuboidal follicular cells are active cells and rich in cellular organelles such as cisternae of rough endoplasmic reticulum, mitochondria, colloid droplets, scrolled Golgi apparatus, and secretory vesicles. A few degenerate follicular cells appeared on rare occasions. The parafollicular cells appeared with a more prominent and conspicuous nucleus than the follicular cells. The follicular cells were classified as active, inactive, or degenerated using transmission electron microscopy. The follicular and parafollicular cells showed calcitonin-positive immunoreactivity. Overall, the presented results showed particular convergences of the morphostructural aspects of the thyroid gland of C. dromedarius to that of other mammals with some distinctive features to cope with their physiology and harsh niche.
MeSH term(s)	Animals ; Camelus ; Thyroid Gland/ultrastructure ; Thyroid Gland/cytology ; Microscopy, Electron, Transmission ; Immunohistochemistry ; Female ; Male
Language	English
Publishing date	2024-03-05
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1385710-1
ISSN	1435-8115 ; 1431-9276
ISSN (online)	1435-8115
ISSN	1431-9276
DOI	10.1093/mam/ozae010
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Article ; Online: Light and scanning electron microscopic characterization of the Egyptian buffalo hair in relation to age with analysis by SEM-EDX.

El-Gendy, Samir A A / Derbalah, Amira / El-Mansi, Ahmed A / El Okle, Osama S / Alsafy, Mohamed A M

Microscopy research and technique

2023 Volume 86, Issue 8, Page(s) 955–965

Abstract: The purpose of this study was to demonstrate a relationship between the microstructure and measurements of Egyptian buffalo hair and age. The buffalo studied ranged in age from young to premature to adult (3-8 months, 1.5-3, 4-6, and 8-10 years). The ... ...

Abstract	The purpose of this study was to demonstrate a relationship between the microstructure and measurements of Egyptian buffalo hair and age. The buffalo studied ranged in age from young to premature to adult (3-8 months, 1.5-3, 4-6, and 8-10 years). The hair was collected from the animals' withers. Cuticle elements were examined using scanning electron microscopy (SEM), light microscopy, and energy-dispersive X-ray (EDX) analysis. Hair shaft diameter increased with age, according to SEM and light microscopy measurements. The values of shaft diameter obtained by SEM of the same animal were 64%-67% of the values obtained by light microscopy due to shrinkage of the hair during the drying process. Additional microscopy measurements revealed that the width of the cortex and medulla increased with age, while the width of the cuticle decreased slightly. The medulla index of four different age groups ranged from 0.56 to 0.61 μm. The average distance between successive scale values increased from 4.83 μm in the young group to 8.86 μm between the ages of 8 and 10 years. The scale pattern had a distinct personality at each stage of age. The hair medulla was in the center and consisted of a mesh-like structure with large pores divided into smaller pores by septa. The cortex was a bundle of fibers that wrapped around the medulla. Light microscopy revealed small oval granules and large streak-like granules in the cortex. EDX spectra revealed that carbon, oxygen, and nitrogen were shown to be more abundant in all age groups of buffalo. In buffalo hair, oxygen was the second most abundant element after carbon. The carbon mass in the examined samples decreased slightly with age (42.31%, 39.18%, 38.88%, and 38.49%), while oxygen increased with age. We concluded that hair measurements varied with age, scale microstructure, and elements, so we estimated buffalo animals' ages up to 10 years. HIGHLIGHTS: The goal was to show a link between the microstructure and measurements of Egyptian buffalo hair and age. Hair shaft diameter increased with age, according to scanning electron microscopy (SEM) and light microscopy measurements. The hair shaft diameter obtained by light microscopy was higher than that obtained by scanning electron microscopy of the same animal; we hypothesized that the difference in hair shaft diameter measured by light microscopy and scanning electron microscopy of the same animal was due to the shrinkage of the hair during the drying process. The width of the cortex and medulla increased with age, while the width of the cuticle decreased slightly. The average distance between successive scale values increased from 4.83 μm in the young group to 8.86 μm between 8 and 10 years old. At each stage of age, the scale pattern had a distinct personality. Carbon, oxygen, and nitrogen were found to be more abundant in the hair of buffalo of all ages and were detected using energy-dispersive X-ray (EDX) spectra. After carbon, oxygen was the second most abundant element in buffalo hair. The carbon mass in the samples studied decreased slightly with age, while the oxygen mass increased. Hair measurements varied according to age, scale microstructure, and elements.
MeSH term(s)	Animals ; Microscopy, Electron, Scanning ; X-Rays ; Egypt ; Electrons ; Hair/ultrastructure
Language	English
Publishing date	2023-06-02
Publishing country	United States
Document type	Journal Article
ZDB-ID	1099714-3
ISSN	1097-0029 ; 1059-910X
ISSN (online)	1097-0029
ISSN	1059-910X
DOI	10.1002/jemt.24366
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Article ; Online: Unveiling Cellular Diversity in the Buffalo Corneal Stroma: Insights into Telocytes and Keratocytes Using Light Microscope, Transmission Electron Microscope, and Immunofluorescence Analysis.

Rashwan, Ahmed M / Alsafy, Mohamed A M / El-Gendy, Samir A A / El-Mansi, Ahmed A / Ez Elarab, Samar M

Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada

2023 Volume 29, Issue 6, Page(s) 2204–2217

Abstract: Telocytes and keratocytes are important cells that maintain the structure and function of the cornea. The buffalo cornea, known for its resilience in harsh conditions, has not been extensively studied regarding the presence and role of telocytes and ... ...

Abstract	Telocytes and keratocytes are important cells that maintain the structure and function of the cornea. The buffalo cornea, known for its resilience in harsh conditions, has not been extensively studied regarding the presence and role of telocytes and keratocytes. We used light microscopy, transmission electron microscopy (TEM), and immunofluorescence assays with platelet-derived growth factor receptor alpha (PDGFRα), CD34, and Vimentin markers to investigate their expression and localization in the cornea. TEM analysis confirmed the presence of spindle-shaped keratocytes with intercellular connections, while telocytes exhibited small spindle-shaped bodies with long, thin branches connecting to corneal keratocytes. Immunofluorescence findings showed that CD34 was more abundant near the endothelium, Vimentin was prominently expressed near the epithelium, and PDGFRα was uniformly distributed throughout the corneal stroma. Co-expression of CD34 and Vimentin, PDGFRα and Vimentin, as well as CD34 and PDGFRα, was observed in keratocytes and telocytes within the stroma, indicating the potential presence of mesenchymal cells. These results suggest the involvement of telocytes and keratocytes in corneal wound healing, transparency maintenance, and homeostasis. The co-expression of these markers highlights the critical role of telocytes and keratocytes in regulating corneal physiological functions, further enhancing our understanding of corneal biology in the buffalo model.
MeSH term(s)	Corneal Stroma/metabolism ; Vimentin ; Receptor, Platelet-Derived Growth Factor alpha/metabolism ; Telocytes/metabolism ; Microscopy, Electron, Transmission ; Fluorescent Antibody Technique
Chemical Substances	Vimentin ; Receptor, Platelet-Derived Growth Factor alpha (EC 2.7.10.1)
Language	English
Publishing date	2023-11-22
Publishing country	England
Document type	Journal Article
ZDB-ID	1385710-1
ISSN	1435-8115 ; 1431-9276
ISSN (online)	1435-8115
ISSN	1431-9276
DOI	10.1093/micmic/ozad126
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Article: Defects oriented hydrothermal synthesis of TiO

Awan, Ashir Mehmood / Khalid, Awais / Ahmad, Pervaiz / Alharthi, Abdulrahman I / Farooq, Muhammad / Khan, Abdulhameed / Khandaker, Mayeen Uddin / Aldawood, Saad / Alotaibi, Mshari A / El-Mansi, Ahmed A / Eldesoqui, Mamdouh Basheir / F Dawood, Amal / H Zyoud, Samer

Heliyon

2024 Volume 10, Issue 3, Page(s) e25579

Abstract: Pure and manganese-doped titanium dioxide nanoparticles ( ... ...

Abstract	Pure and manganese-doped titanium dioxide nanoparticles (MnTiO
Language	English
Publishing date	2024-02-04
Publishing country	England
Document type	Journal Article
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2024.e25579
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Article ; Online: Profiling and functional analysis of circular RNAs in yaks intramuscular fat.

Su, Quyangangmao / Raza, Sayed Haidar Abbas / Gao, Zhanhong / Zhang, Fengshuo / Wu, ZhenLing / Ji, QiuRong / He, TingLi / Aloufi, Bandar Hamad / El-Mansi, Ahmed A / Eldesoqui, Mamdouh / Sabir, Deema Kamal / Gui, Linsheng

Journal of animal physiology and animal nutrition

2024

Abstract: Circular RNAs (circRNAs) are a new class of endogenous RNA regulating gene expression. However, the regulatory mechanisms of lipid metabolism in yaks involved in circRNAs remain poorly understood. The IMF plays a crucial role in the quality of yak meat, ... ...

Abstract	Circular RNAs (circRNAs) are a new class of endogenous RNA regulating gene expression. However, the regulatory mechanisms of lipid metabolism in yaks involved in circRNAs remain poorly understood. The IMF plays a crucial role in the quality of yak meat, to greatly improve the meat quality. In this study, the fatty acid profiles of yak IMF were determined and circRNAs were sequenced. The results showed that the total of polyunsaturated fatty acid (PUFA) content of adult yak muscle was significantly higher than that in yak calves (p < 0.05). A total of 29,021 circRNAs were identified in IMF tissue, notably, 99 differentially expressed (DE) circRNAs were identified, to be associated with fat deposition, the most significant of which were circ_12686, circ_6918, circ_3582, ci_106 and ci_123 (A circRNA composed of exons is labelled 'circRNA' and a circRNA composed of introns is labelled 'ciRNA'). KEGG pathway enrichment analysis showed that the differential circRNAs were enriched in four pathways associated with fat deposition (e.g., the peroxisome proliferator-activated receptor signalling, fatty acid degradation, sphingolipid metabolism and sphingolipid signalling pathways). We also constructed co-expression networks of DE circRNA-miRNA using high-throughput sequencing in IMF deposition, from which revealed that ci_106 target binding of bta-miR-130b, bta-miR-148a, bta-miR-15a, bta-miR-34a, bta-miR-130a, bta-miR-17-5p and ci_123 target binding of bta-miR-150 were involved in adipogenesis. The study revealed the role of the circRNAs in the IMF deposition in yak and its influence on meat quality the findings demonstrated the circRNA differences in the development of IMF with the increase of age, thus providing a theoretical basis for further research on the molecular mechanism of IMF deposition in yaks.
Language	English
Publishing date	2024-03-03
Publishing country	Germany
Document type	Journal Article
ZDB-ID	232729-6
ISSN	1439-0396 ; 0044-3565 ; 0931-2439
ISSN (online)	1439-0396
ISSN	0044-3565 ; 0931-2439
DOI	10.1111/jpn.13947
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Article ; Online: Macro- and micro-morphological comparison of the detailed structure of the oral cavity roof in two different feeding habits marine fishes: Pagrus pagrus and Boops boops.

Alsafy, Mohamed A M / Seif, Manal A / El-Mansi, Ahmed A / El-Beskawy, Mohamed / El Dakroury, Mohamed / Eldesoqui, Mamdouh B / Ez Elarab, Samar M / El-Gendy, Samir A A

Journal of experimental zoology. Part A, Ecological and integrative physiology

2024

Abstract: The feeding habits and habitats of fish influence the morphology of the oral cavity. This study used gross anatomy, light microscopy, and scanning electron microscopy, in addition to morphometric analysis, to investigate the anatomical characteristics of ...

Abstract	The feeding habits and habitats of fish influence the morphology of the oral cavity. This study used gross anatomy, light microscopy, and scanning electron microscopy, in addition to morphometric analysis, to investigate the anatomical characteristics of the oral cavity roof in Pagrus pagrus and Boops boops, which have different dietary habits. The oral cavity roof appeared U-shaped and divided into the palate and upper pharyngeal regions. The upper lip of P. pagrus was broad, while B. boops' upper lip was small and thin. Both species had a stratified squamous epithelium with an irregular shape and a folded surface. P. pagrus had a horseshoe-shaped upper velum with a high middle part, and its surface resembled sea waves with obvious mucous-secreting openings with cilia and many folds and grooves between them. B. boops's upper velum was thin and appeared as a triangle pouch with a pointed cranial apex. The palate in both species was narrow in the front and increased in width backward until it ended. The upper pharyngeal teeth in P. pagrus appeared as two patches, separated by a median longitudinal ridge and an anterior V-shape separator. Meanwhile, in B. boops, they appeared as a ball patch on both sides and a separator ridge in the middle. Because P. pagrus fed on harder structures than B. boops, their feeding habits were reflected in the structure of the oral cavity roof. P. pagrus, a carnivorous species, had several rows of sharp upper jaw and upper pharyngeal teeth, thick spinous tubercles on oblique transverse ridges, and massive mucous glands. On the other hand, B. boops, an omnivorous species, had only one row of upper jaw teeth, a few upper pharyngeal teeth scattered on two oval patches, and thin filaments on the oblique transverse ridges.
Language	English
Publishing date	2024-04-23
Publishing country	United States
Document type	Journal Article
ZDB-ID	1474896-4
ISSN	2471-5646 ; 1932-5223 ; 2471-5646 ; 1932-5231 ; 1552-499X
ISSN (online)	2471-5646 ; 1932-5223
ISSN	2471-5646 ; 1932-5231 ; 1552-499X
DOI	10.1002/jez.2822
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Article ; Online: The abrogative effect of propolis on acrylamide-induced toxicity in male albino rats

Al Syaad Khalid M. / Al-Doaiss Amin A. / Ahmed Ahmed Ezzat / El-Mekkawy Haitham / Abdelrahman Mohamed / El-Mansi Ahmed A. / Kulyar Muhammad Fakhar-e-Alam / Ali Montaser Elsayed

Open Chemistry, Vol 21, Iss 1, Pp 1723-

Histological study

2023 Volume 21

Abstract: The present study investigated the toxic action of acrylamide (ACR) and the abrogative effect of aqueous propolis extract on ACR-induced toxicity in male albino rats. Forty adult male albino rats were randomly divided into four groups and administered ... ...

Abstract	The present study investigated the toxic action of acrylamide (ACR) and the abrogative effect of aqueous propolis extract on ACR-induced toxicity in male albino rats. Forty adult male albino rats were randomly divided into four groups and administered the treatment doses orally by gavage. Control, treated with a physiological solution (5.0 ml/rat). ACR-treated group, treated with ACR 25 mg/kg. ACR + propolis, treated with 25 mg/kg ACR + 100 mg/kg propolis. Propolis-treated group, treated with 100 mg/kg. The treatment period was 28 days, the treatment doses were administered orally using a gavage stomach tube. The results showed that the presence of ACR increased (P < 0.001) the level of liver enzymes alanine aminotransferase (167.2 vs 90.15) and aspartate aminotransferase (120.66 vs 41.52) in the liver tissue serum and lipid peroxidation products (80.11 vs 39.3); also, it decreased (P < 0.001) the total capacity of antioxidants (113.4 vs 189.41) compared to the control group. The histological analysis of the kidney revealed alterations induced by ACR, including atrophy, necrosis, renal glomeruli atrophy, tubular necrosis, enlargement of the glomeruli, hemorrhage, and edema surrounding the blood vessels. Also, the results showed that the rats treated with propolis improved liver and kidney functions because of propolis’s efficiency against the harmful effects of ACR. Moreover, the histological examination of the liver tissue revealed negative changes, with focal necrosis in hepatocytes. Microscopic examination showed tubular necrosis within the seminiferous tubules, sloughing, and desquamation of sperm cells into the lumen. Also, an infiltration of protein substances between the tubules and degenerative vacuolar changes between sperm cells was observed. The renal, hepatic, and testicular tissues appeared almost similar to the control group, except for some minor changes. This study proved that feeding the rats with propolis reduced these pathological effects and restored the tissues to a normal state. It is ...
Keywords	acrylamide ; propolis ; antioxidant ; toxicity ; rat ; Chemistry ; QD1-999
Subject code	630
Language	English
Publishing date	2023-05-01T00:00:00Z
Publisher	De Gruyter
Document type	Article ; Online
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Article ; Online: Structural and Functional Characterization of the Tongue and Digestive Tract of

El-Mansi, Ahmed A / Al-Kahtani, Mohamed A / Abumandour, Mohamed M A / Ahmed, Ahmed E

Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada

2020 Volume 26, Issue 3, Page(s) 524–541

Abstract: We describe the morphological adaptations of the tongue and gastrointestinal tract of the striped sand snake Psammophis sibilans and discuss their functional importance. Using standard histological, histochemical, and scanning electron microscopy ... ...

Abstract	We describe the morphological adaptations of the tongue and gastrointestinal tract of the striped sand snake Psammophis sibilans and discuss their functional importance. Using standard histological, histochemical, and scanning electron microscopy techniques, we analyzed 11 adult snakes of both sexes. Our findings showed that the bifurcated non-papillate tongue exhibited chemoreceptive adaptions to squamate foraging behavior. The lingual apex tapered terminally with sensory spines, and the body of the tongue possesses a characteristic central odor-receptor chamber that might serve to trap and retain scent molecules. Furthermore, the intrinsic musculature showed interwoven and well-developed transverse, vertical and longitudinal muscle fibers that control contraction and retraction during probing and flicking. The esophagus displayed highly folded mucosa lined with columnar epithelium with goblet cells. In contrast, the stomach mucosa formed finger-like gastric rugae, encompassing tubular glands with dorsal gastric pits. The intestine is distinct from other vertebrates in lacking the crypts of Lieberkühn in the tunica mucosa and submucosa. The intestine mucosa is mostly arranged in interdigitating villi oriented perpendicular to the luminal surface. We extrapolated subtle variations for both acid and neutral mucopolysaccharides and glycoproteins localization as well as collagen fibers using histochemical analyses. The elaborate histo-morphological and functional adaptation of the tongue and digestive tract plays a pivotal role in foraging and feeding behavior.
MeSH term(s)	Animals ; Epithelium ; Esophagus ; Feeding Behavior/physiology ; Female ; Gastric Mucosa/cytology ; Gastrointestinal Tract/anatomy & histology ; Gastrointestinal Tract/pathology ; Intestinal Mucosa ; Lizards ; Male ; Microscopy, Electron, Scanning ; Snakes ; Stomach/anatomy & histology ; Stomach/pathology ; Tongue/anatomy & histology ; Tongue/pathology
Language	English
Publishing date	2020-05-11
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1385710-1
ISSN	1435-8115 ; 1431-9276
ISSN (online)	1435-8115
ISSN	1431-9276
DOI	10.1017/S1431927620001312
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