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Full-Text Articles in Life Sciences
Preantral Follicle Morphometry And Ultrastructure Of Antral Follicles In Anatolian Water Buffalo, Duygu Baki̇ Acar, Muhammed Kürşad Bi̇rdane, Çi̇ğdem Tokyol, Nermi̇n Nüket Göçmen Karabeki̇r, Hati̇ce Mürvet Hayran, Erhan Özenç, Fatma Aktepe, Ebubeki̇r Yazici, İlknur Pi̇r Yağci, Mehmet Uçar
Preantral Follicle Morphometry And Ultrastructure Of Antral Follicles In Anatolian Water Buffalo, Duygu Baki̇ Acar, Muhammed Kürşad Bi̇rdane, Çi̇ğdem Tokyol, Nermi̇n Nüket Göçmen Karabeki̇r, Hati̇ce Mürvet Hayran, Erhan Özenç, Fatma Aktepe, Ebubeki̇r Yazici, İlknur Pi̇r Yağci, Mehmet Uçar
Turkish Journal of Veterinary & Animal Sciences
This study aimed to evaluate quantitative and morphometric analyses of preantral follicles and the ultrastructural characteristics of antral follicles in different oestrous cycle stages in Anatolian water buffaloes. Twenty-four ovaries collected from twelve slaughtered Anatolian water buffaloes were classified macroscopically as luteal or follicular stages. The ovaries were prepared for histological examination (Hematoxylin-eosin staining), and primordial, primary, and secondary follicle numbers were calculated, and the diameters of oocytes, follicles, and nuclei were measured under a light microscope with a micrometre. The theca and granulosa cells of antral follicles were observed under a transmission electron microscope. The mean number of preantral …
Ultrastructure Of Apoptotic T Lymphocytes And Thymicepithelial Cells In Early Postnatal Pig Thymus, Ahmet Ceylan, Belma Alabay
Ultrastructure Of Apoptotic T Lymphocytes And Thymicepithelial Cells In Early Postnatal Pig Thymus, Ahmet Ceylan, Belma Alabay
Turkish Journal of Veterinary & Animal Sciences
The thymus is a primary lymphoid organ that provides the microenvironment required for the development of T lymphocytes. Thymic epithelial cells (TECs) are among the most critical components in the thymic microenvironment supporting thymocyte selection and maturation. Apoptosis is primarily a physiologic process that plays a major role during the development of T lymphocytes. The first purpose of this study was to examine morphological changes in apoptotic thymocytes by transmission electron microscope in piglets. The second purpose was to reveal the morphological typology of TECs in piglets. Tissue samples of the thymus were taken from healthy Yorkshire race pigs of …
Ultrastructure Of Rat Umbilical Cord Stroma-Derived Mesenchymal Stem Cells, Ahmet Ceylan, Özge Özgenç, Korhan Altunbaş, Petek Korkusuz, Asuman Özen
Ultrastructure Of Rat Umbilical Cord Stroma-Derived Mesenchymal Stem Cells, Ahmet Ceylan, Özge Özgenç, Korhan Altunbaş, Petek Korkusuz, Asuman Özen
Turkish Journal of Veterinary & Animal Sciences
Being multipotent progenitor cells, mesenchymal stem cells continue to attract attention as a promising tool for cell-based therapy and tissue engineering. However, research on the ultrastructure of these cells is rather scarce. This study was aimed at the investigation of the transmission electron microscopic ultrastructure and morphology of mesenchymal stem cells isolated from the stroma of rat umbilical cord using the explant culture method. At the end of the third passage, some of the cells isolated from the stroma of the umbilical cord were harvested for electron microscopic examination. The remaining cells were induced for osteogenic, chondrogenic, and adipogenic differentiation. …
Water Ph Effects On Survival, Reproductive Performances, And Ultrastructure Of Gonads, Gills, And Skins Of The Javanese Medaka (Oryzias Javanicus), Ahmad Fadhil Mohd Salleh, Mohammad Noor Amal Azmai, Nurrul Shaqinah Nasruddin, Syaizwan Zahmir Zulkifli, Ferdaus Mohamat Yusuff, Wan Norhamidah Wan Ibrahim, Ahmad Ismail
Water Ph Effects On Survival, Reproductive Performances, And Ultrastructure Of Gonads, Gills, And Skins Of The Javanese Medaka (Oryzias Javanicus), Ahmad Fadhil Mohd Salleh, Mohammad Noor Amal Azmai, Nurrul Shaqinah Nasruddin, Syaizwan Zahmir Zulkifli, Ferdaus Mohamat Yusuff, Wan Norhamidah Wan Ibrahim, Ahmad Ismail
Turkish Journal of Veterinary & Animal Sciences
The Javanese medaka (Oryzias javanicus) has the potential to be developed as a test organism. It also exhibited many characteristics that are similar to those of well-known laboratory fishes. This study determined the effects of water pH on the survival, reproductive performances, and ultrastructure of the gonads, gills, and skins of the Javanese medaka. This study confirmed that Javanese medakas treated with pH 6-7 displayed the lowest mortality, but increased in egg production and hatchability. This supposition is supported by strong evidence from the oocytes and testes stage analyses, including histological examinations. The ultrastructure of gills and skins of fish …
Fine Structure Of The Malpighian Tubules In Gryllus Campestris(Linnaeus, 1758) (Orthoptera, Gryllidae), Irmak Polat, Nurcan Özyurt, Damla Amutkan, Zeki̇ye Suludere, Selami̇ Candan
Fine Structure Of The Malpighian Tubules In Gryllus Campestris(Linnaeus, 1758) (Orthoptera, Gryllidae), Irmak Polat, Nurcan Özyurt, Damla Amutkan, Zeki̇ye Suludere, Selami̇ Candan
Turkish Journal of Zoology
The Malpighian tubules are responsible for excretion and osmoregulation in insects. The Malpighian system consists of tubules that are closed at the distal end and extend from the point of junction of the midgut and hindgut. This organ helps the water and electrolyte balance of the internal metabolism by filtration with absorption of water and soluble materials as mineral salts from the hemolymph. In this study, the histology of Malpighian tubules in Gryllus campestris (Orthoptera, Gryllidae) has been examined in detail by light microscopy, scanning electron microscopy, and transmission electron microscopy. The distal ends of the Malpighian tubules in G. …
Ultrastructural Effects Of Lead Acetate On The Spleen Of Rats, Mesure Türkay, Hüseyi̇n Türker, Turan Güven
Ultrastructural Effects Of Lead Acetate On The Spleen Of Rats, Mesure Türkay, Hüseyi̇n Türker, Turan Güven
Turkish Journal of Biology
In this experiment, the ultrastructural effects of orally administered lead acetate on rat (Rattus rattus) spleen were studied. Rats weighing approximately 200-250 g were used in this experiment. They were divided into five groups, each one including five rats. Group I served as the normal control group while the others served as the experimental groups. The rats were exposed to oral administrations of lead acetate of 2.5 mg dissolved in 1 mL of drinking water per day. The administration lasted 96, 144, 336, and 432 h. The animals were anesthetized using chloroform inhalation and the peritoneum was stripped open and …
Morphology, Histochemistry, And Ultrastructure Of Foliar Mucilage-Producing Trichomes Of Harpagophytum Procumbens (Pedaliaceae), Yougasphree Naidoo, Samia Heneidak, Arvind Bhatt, Nazeera Kasim, Gonasageran Naidoo
Morphology, Histochemistry, And Ultrastructure Of Foliar Mucilage-Producing Trichomes Of Harpagophytum Procumbens (Pedaliaceae), Yougasphree Naidoo, Samia Heneidak, Arvind Bhatt, Nazeera Kasim, Gonasageran Naidoo
Turkish Journal of Botany
The morphology, histochemistry, and ultrastructure of foliar mucilage-producing trichomes of Harpagophytum procumbens are investigated using a combination of light and electron microscopy. The leaves of H. procumbens bear short and long glandular trichomes comprising 1 or 2 basal epidermal cells, a stalk of 1-3 cells, a short neck cell, and a head of 2-5 cells. These trichomes are distributed on both leaf sides with a greater abundance on the abaxial side. Both types of trichomes secrete copious amounts of secretion as droplets onto the leaf surface, and the release occurs through micropores in the head cuticles. The secreted material is …
An Ultrastructural Study On The Merogonic Stages Of Goussia Senegalensis (Faye, 1988) Diouf And Toguebaye, 1993 (Apicomplexa, Coccidia) From The Liver Of Pagellus Bellottii (Pisces, Teleostei), Jacques Ngor Diouf, Bhen Sikina Toguebaye
An Ultrastructural Study On The Merogonic Stages Of Goussia Senegalensis (Faye, 1988) Diouf And Toguebaye, 1993 (Apicomplexa, Coccidia) From The Liver Of Pagellus Bellottii (Pisces, Teleostei), Jacques Ngor Diouf, Bhen Sikina Toguebaye
Turkish Journal of Zoology
Little is known about the merogony of coccidians from fishes in Africa. To our knowledge, including both freshwater and marine fishes, developmental stages have been recorded for only Goussia cichlidarum, Cryptosporidium sp. parasitizing the stomachs of juvenile cichlid fish, and Eimeria (s. l.) vanasi. A survey of coccidians parasitizing marine fishes from the coast of Senegal (West Africa) was done between 1988 and 1992 and samples of infected organs were collected for further transmission electron microscopy observations. Merogonic stages were observed. Goussia senegalensis undergoes merogony in the hepatic cells of Pagellus bellottii as follows: meronts develop inside the cytoplasm of …
Seed Coat Ultrastructure Of Hard-Seeded And Soft-Seeded Varieties Of Vicia Sativa, Hati̇ce Nurhan Büyükkartal, Hati̇ce Çölgeçen, Nur Münevver Pinar, Nesli̇han Erdoğan
Seed Coat Ultrastructure Of Hard-Seeded And Soft-Seeded Varieties Of Vicia Sativa, Hati̇ce Nurhan Büyükkartal, Hati̇ce Çölgeçen, Nur Münevver Pinar, Nesli̇han Erdoğan
Turkish Journal of Botany
The mature seed coat structure in hard-seeded and soft-seeded varieties of Vicia sativa L. was examined by scanning and transmission electron microscopy to investigate differentiation in cytological and morphological features between these varieties. The outer layer of the seed coats was composed of macrosclereid (Malpighian) cells in the hard-seeded and soft-seeded varieties of Vicia sativa. The walls of the macrosclereid cells were thickened, and the cell vacuoles were filled with tannin. The cytoplasm of the macrosclereids contained small- and large-sized vacuoles and ribosomes, mitochondria, and endoplasmic reticulum. Under this layer there was a hypodermal layer composed of osteosclereids separated by …
L-Arginine Protects Against Ethylene Glycol-Induced Gastric Mucosal Damage In Rats: Immunohistochemical And Electron Microscopic Study, Samah Kandeel, Thoryaa El_Deeb, Ehsan Salah, Nafisa El-Bakary, Naglaa Sarhan, Mohamed Balaha, Hiroki Sakai, Tokuma Yanai
L-Arginine Protects Against Ethylene Glycol-Induced Gastric Mucosal Damage In Rats: Immunohistochemical And Electron Microscopic Study, Samah Kandeel, Thoryaa El_Deeb, Ehsan Salah, Nafisa El-Bakary, Naglaa Sarhan, Mohamed Balaha, Hiroki Sakai, Tokuma Yanai
Turkish Journal of Biology
Ethylene glycol is an alcohol widely used in industry as an antifreeze. It affects the normal gastric mucosal defense mechanisms, inducing surface ulcerations. L-arginine is a precursor of nitric oxide that exhibits multiple biological properties; among them is the acceleration of wound healing, especially in the stomach. Caspase-3 immunohistochemistry, and semithin and ultrathin section examinations were used to investigate the possible protective effect of L-arginine on ethylene glycol-induced gastric mucosal damage in rats. Three animal groups were used: group A (control group), group B (received 3.3 mL/kg ethylene glycol for 2 weeks), and group C (received 200 mg/kg of L-arginine …
Morphological Characterization Of The Immune Organs In Ostrich Chicks, Hui Song, Ke-Mei Peng, Sheng-He Li, Yan Wang, Lan Wei, Li Tang
Morphological Characterization Of The Immune Organs In Ostrich Chicks, Hui Song, Ke-Mei Peng, Sheng-He Li, Yan Wang, Lan Wei, Li Tang
Turkish Journal of Veterinary & Animal Sciences
This study describes the anatomical, light microscopic, and ultrastructural characterization of the immune organs in ostrich chicks. In this study 6 healthy 8-week-old ostrich chicks were processed for light and transmission electron microscopy. Hematoxylin and eosin as well as improved Weigert staining were used for light microscopy. The small thymus, which clustered caudally along both sides of the neck, contained Hassall's corpuscles in the medulla. The cloacal bursa, which formed the hanging and lateral walls of the cloaca, enveloped the cloaca but did not form a truly independent bursa. Inside the bursa convex papillae were densely distributed on the surface …
A Microscopic And Stereological Study Of The Renal Artery Transitional Zone Of The Adult Male Dog, Fatemah Ramezani Nowrozani
A Microscopic And Stereological Study Of The Renal Artery Transitional Zone Of The Adult Male Dog, Fatemah Ramezani Nowrozani
Turkish Journal of Veterinary & Animal Sciences
A transitional zone in the dog renal artery was documented and its parameters were recorded: length and volumes of the luminal wall, tunica intima, tunica media, and tunica adventitia-as well as these parameters in the non-transitional zone of artery. Twelve normal adult male dogs were studied. The specimens were processed in the routine manner for light and electron microscopy. After the determination of transitional zone length by light microscope, for the stereological study each renal artery was divided into transitional and non-transitional zones, and paraffin blocks were prepared. It was established that the transitional zone contains parallel and continuous elastic …
Transmission Electron Microscopic Study Of Renal Haemopoietic Tissues Of Channa Punctatus (Bloch) Experimentally Infected With Two Species Of Aeromonads, Rajarshi Ghosh, Sumit Homechaudhuri
Transmission Electron Microscopic Study Of Renal Haemopoietic Tissues Of Channa Punctatus (Bloch) Experimentally Infected With Two Species Of Aeromonads, Rajarshi Ghosh, Sumit Homechaudhuri
Turkish Journal of Zoology
The ultrastructural pathological changes in the renal haemopoietic tissue of Channa punctatus (Bloch) experimentally infected with 2 species of aeromonads, Aeromonas hydrophila and Aeromonas salmonicida, were reported. Adult C. punctatus specimens were injected intramuscularly, once at a time, with a chosen sublethal dose (2 × 10^9 cfu mL^-^1) of aeromonads at 5 µL g^-^1 body weight of fish and were exposed to 72 h of duration. The leucocytes (especially macrophages and melanomacrophages) and other associated cells from the pronephric head kidney of aeromonad-infected C. punctatus were studied by fixed ultrathin sections for transmission electron microscopy. The sinusoidal cells, barrier cells, …
Descriptive Characteristics Of Haemopoietic Cell Lineages In A Facultative Air Breathing Fish Clarias Batrachus (L.), Krishna Gangopadhyay, Sumit Homechaudhuri
Descriptive Characteristics Of Haemopoietic Cell Lineages In A Facultative Air Breathing Fish Clarias Batrachus (L.), Krishna Gangopadhyay, Sumit Homechaudhuri
Turkish Journal of Zoology
Haemopoietic tissues of the head kidney of Clarias batrachus were studied for morphometric analysis and ultrastructural descriptions of the erythropoietic and leucopoietic cell populations. Eight successive steps of developing erythrocytes from small lymphoid haemoblasts (SLHs) to mature erythrocytes (MEs) were distinguished. Progressive loss of RNA and synthesis of haemoglobin during haemopoiesis were coupled with denser nucleus and changes in cellular shapes. Transmission electron microscopy aided in clear distinction between cell lineages in the development of erythrocytes, granulocytes, and lymphocytes. Ultrastructural analysis of the pronephric stromal cells forming adherent multilayer of haemopoietic microenvironment was explicit in describing their ability to promote …
Morphological And Ultrastructural Changes In Tissues Of Intermediate And Definitive Hosts Infected By Protostrongylidae, Abdurakhim Ergashevich Kuchboev, Eric P. Hoberg
Morphological And Ultrastructural Changes In Tissues Of Intermediate And Definitive Hosts Infected By Protostrongylidae, Abdurakhim Ergashevich Kuchboev, Eric P. Hoberg
Turkish Journal of Zoology
Cellular and subcellular mechanisms involved in tissue responses to larval and adult lungworms (Protostrongylidae) were respectively explored through experimental and natural infections in molluscan intermediate (Xeropicta candacharica) and ruminant definitive hosts (Ovis aries). Reaction to developing larval stages in the gastropod is manifested as cellular infiltration involving lymphocytes and macrophages into the infected tissue, which restricts damage and may result in destruction and elimination of parasites from the intermediate host. Variations in the patterns of localization for infective third-stage larvae in the foot tissue of the intermediate host are described. In the definitive host, evaluation of lung tissue by histology …
The Effects Of Uv Radiation On Some Structural And Ultrastructural Parameters In Pepper (Capsicum Longum A.Dc.), Siavash Hosseini Sarghein, Jirair Carapetian, Jalil Khara
The Effects Of Uv Radiation On Some Structural And Ultrastructural Parameters In Pepper (Capsicum Longum A.Dc.), Siavash Hosseini Sarghein, Jirair Carapetian, Jalil Khara
Turkish Journal of Biology
The objective of this study was to evaluate the effects on the structure and ultrastructure of pepper plants (Capsicum longum A.DC.) exposed to UV radiation under greenhouse conditions. The plants were grown in a growth chamber under uniform environmental conditions and after 35 days were exposed to UV-A and UV-C radiation for 15 and 8 days, respectively. Changes in root growth were not significant, but shoot growth decreased in UV-R-exposed plants and decreased significantly in UV-C-exposed plants. Leaf area also decreased in UV-R-exposed plants and decreased significantly in UV-C-exposed plants. Root thickness was not affected by UV treatment, but stem …
Ultrastructural Changes In Rat Liver By Methyleugenol And Evaluation Of Some Biochemical Parameters, Ayşegül Çerkezkayabeki̇r, Gülnur Kizilay, Fi̇gen Ertan
Ultrastructural Changes In Rat Liver By Methyleugenol And Evaluation Of Some Biochemical Parameters, Ayşegül Çerkezkayabeki̇r, Gülnur Kizilay, Fi̇gen Ertan
Turkish Journal of Biology
The present study investigated the effect of methyleugenol, a food flavoring and fragrance agent, on the livers of laboratory rats. Doses of 10 and 30 mg/kg/day of methyleugenol (in 0.5% methylcellulose) were administered intragastrically (IG) to 2 dose groups for 10 days alongside a control group (n = 10 for each group). Gains in body weight were not statistically significant for either dose. Lactate dehydrogenase (LDH) and alkaline phosphatase (ALP) activities decreased (P < 0.05) for both dose groups, but AST (aspartate aminotransferase) activity decreased significantly (P < 0.05) only in the 30 mg/kg/day methyleugenol dose group. Alanine aminotransferase (ALT) activity did not change significantly in either group. The total amount of glucose remained unchanged, but glycogen in the liver decreased significantly (P < 0.05) in the 30 mg/kg/day methyleugenol dose group. There was also an increase of swelling in the smooth endoplasmic reticulum sacs (sER), electron dense accumulations in the sER, cytoplasmic vacuolization, a slight increase of mitochondria and lysosomes, and invaginations in the nucleus membranes of hepatocytes. Extensions in bile canaliculi and increasing microvilli of bile canaliculi in the liver were also observed. These findings indicate the ultrastructural toxic effect of methyleugenol on rat livers in 10 and 30 mg/kg/day doses. Therefore, we may speculate that the toxic effect of methyleugenol needs to be examined in detail.
The Histochemical And Ultrastructural Effects Of Cadmium On Mouse Edl Muscle, Fati̇me Geyi̇koğlu, Aysel Temelli̇, Özgen Vuraler, Hasan Türkez
The Histochemical And Ultrastructural Effects Of Cadmium On Mouse Edl Muscle, Fati̇me Geyi̇koğlu, Aysel Temelli̇, Özgen Vuraler, Hasan Türkez
Turkish Journal of Zoology
The histochemical and ultrastructural effects of cadmium (Cd) on the extensor digitorum longus (EDL) muscles of male mice were investigated. Two doses of Cd (0.1 and 1.0 x 10^{-4} M) were injected into the mice. The animals were killed at the end of 48 h and their EDL muscles excised. Three types of fibers (I, IIA and IIB) were described by the succinic dehydrogenase (SDH) method in the control groups. The mitochondrial and sarcotubular contents of the fibers were different. The histochemical and ultrastructural characteristics of the EDL muscles in mice given Cd did not differ from those of the …
The Histochemical And Ultrastructural Structures Of Avian Latissimus Dorsi Muscle Fiber Types And Changes In Them Caused By Water Copper Level, Fati̇me Geyi̇koğlu, Özgen Vuraler, Aysel Temelli̇
The Histochemical And Ultrastructural Structures Of Avian Latissimus Dorsi Muscle Fiber Types And Changes In Them Caused By Water Copper Level, Fati̇me Geyi̇koğlu, Özgen Vuraler, Aysel Temelli̇
Turkish Journal of Veterinary & Animal Sciences
The histochemical and ultrastructural effects of water Cu on the anterior latissimus dorsi (ALD) muscle of 120 newly hatched broilers were investigated in a 45-day experiment. Two doses of water Cu (250 mg Cu/kg water and 500 mg Cu/kg water) were given to the poults. Two distinct categories (IIIA and IIIB) of slow tonic fibers in the control groups were detected by enzyme reactions. The ultrastructure of the Z-line, mitochondrial content and sarcotubular content differed between the 2 fiber types. In the application of 250 mg Cu/kg water, the histochemical characteristics of the IIIB fibers were clearly different from those …
Ovarian Follicle Ultrastructure And Changes In Levels Of Ovarian Steroids During Oogenesis In Chalcalburnus Tarichi Pallas, 1811, Güler Ünal, Hati̇ce Karaki̇şi̇, Mahmut Elp
Ovarian Follicle Ultrastructure And Changes In Levels Of Ovarian Steroids During Oogenesis In Chalcalburnus Tarichi Pallas, 1811, Güler Ünal, Hati̇ce Karaki̇şi̇, Mahmut Elp
Turkish Journal of Veterinary & Animal Sciences
The ultrastructure of the ovarian follicle and the levels of the ovarian 11-dehydrocorticosterone (11-DHC), estradiol-17\beta (E_{2}), 17\alpha-hydroxyprogesterone (17\alpha-OHP), and progesterone (P) were studied during cortical alveoli, vitellogenesis and oocyte maturation in Chalcalburnus tarichi. The microvilli began to form on the oocyte surface during cortical alveoli phase and during vitellogenesis, came into contact in the pore canals of the zona radiata with microvilli formed from granulosa cells. While the special thecal cells posses specific organelles, which are characteristic of steroid-producing cells, namely, mitochondria with tubular cristae, smooth endoplasmic reticulum and lipid droplets, the granulosa cells contain organelles typical for protein-secreting cells. …
Ultrastructural Effects Of Retinyl Palmitate On Brown Adipocytes Of Fetal Mice, Candan Özoğul, Mete Köksal, Deni̇z Erdoğan
Ultrastructural Effects Of Retinyl Palmitate On Brown Adipocytes Of Fetal Mice, Candan Özoğul, Mete Köksal, Deni̇z Erdoğan
Turkish Journal of Veterinary & Animal Sciences
Brown adipose tissue (BAT) has a thermogenic function in animals. Mitochondrial uncoupling protein (UCP) is responsible for the thermogenic function in BAT cells. Vitamin A affects proliferation and differentiation in cells. Retinoic acid, a derivative of vitamin A, stimulates the expression of the UCP gene, which is found in BAT cells. Retinoic acid performs its function regardless of differentiation stage of BAT cells. It is known that vitamin A is teratogenic at therapeutic doses in pregnancy. In this study, effects of retinyl palmitate applied in a therapeutic dose were examined in mice fetal BAT cells. Tissue samples were subjected to …
Histological, Histochemical And Ultrastructural Investigations On The Esophagus Of Juvenile Rainbow Trout (Oncorhynchus Mykiss), Fati̇me Geyi̇koğlu, Özgen Vuraler, Aysel Temelli̇
Histological, Histochemical And Ultrastructural Investigations On The Esophagus Of Juvenile Rainbow Trout (Oncorhynchus Mykiss), Fati̇me Geyi̇koğlu, Özgen Vuraler, Aysel Temelli̇
Turkish Journal of Zoology
The histology of the esophagus of Oncorhynchus mykiss was studied. The structure of the esophagus exhibited differences as well as similarities when compared with previous studies. In this study, the histochemical and ultrastructural structure of the tunica muscularis externa in the esophagus of this fish is investigated. The muscle fibers are described as red and intermediate fibers according to the pH stability of their mATPase activities. The red fibers showed intense staining, while intermediate fibers showed moderate staining with succinic dehydrogenase (SDH) and toluidine blue. In addition, small diameter fibres were seen. These indicated to be the continuation of development …
Effects Of Hexachlorobenzene On Rat Renal Cortex: An Ultrastructural Study, Emel Koptagel, Hüseyi̇n Eray Bulut
Effects Of Hexachlorobenzene On Rat Renal Cortex: An Ultrastructural Study, Emel Koptagel, Hüseyi̇n Eray Bulut
Turkish Journal of Veterinary & Animal Sciences
Male Wistar albino rats, bred and fed under standard laboratory conditions, were administered for 20 days two dosages [Group I: 750 mg/kg body weight (n = 15) and Group II: 1500 mg/kg body weight (n = 15)] of oral hexachlorobenzene resolved in corn oil. Control group animals (n = 15) received only corn oil for 20 days. Twenty-four hours after the administration of the last dose, renal tissue samples, obtained by laparotomy, were fixed in 3% glutaraldehyde in phosphate buffer and 1% aqueous osmium tetroxide. Following the routine tissue processing steps, samples were blocked in Araldyte CY 212. Ultrathin sections …
Ultrastructural Observations On The Development Of Some Actinosporean Types Within Their Oligochaete Hosts, Ahmet Özer, Rodney Wootten
Ultrastructural Observations On The Development Of Some Actinosporean Types Within Their Oligochaete Hosts, Ahmet Özer, Rodney Wootten
Turkish Journal of Zoology
Synactinomyxon type 1, aurantiactinomyxon type 3, echinactinomyxon type 5 and raabeia type 4 were studied at the TEM level in order to determine the developmental stages within their oligochaete hosts. All the actinosporean types studied had uninucleate cells as the earliest stage of development. The formation of a subsequent binucleate cell stage was either due to the division of the nucleus in a uninucleate cell or the plasmogamy of two uninucleate cells. The earliest pansporocyst formation seen was two outer somatic cells surrounding two inner generative \alpha and \beta cells in all the actinosporean types studied. However, the formation of …
The Effects Of Precocene Ii On The Fine Structure Of Corpus Allatum In Adult Female Anacridium Aegyptium L. (Orthoptera, Acrididae), Gürsel Ergen
Turkish Journal of Zoology
In this study, the effects of the antijuvenile hormone Precocene II on the corpus allatum of adult females of Anacridium aegyptium L. (Orthoptera) were investigated with electron microscopy. In the insects, topically treated with 500 µg precocene II, the corpora allata did not show marked atrophy or destruction. After 10 or 20 days of precocene II treatment, the ultrastructural changes of especially the nuclei, mitochondria, endoplasmic reticulum membranes, Golgi complexes and some other intracellular organelles in the gland cells, probably reflect a moderate sensitivity to this compound.
Effects Of Phorbol Myristate Acetate On The Liver: A Biochemical And Ultrastructural Study, Memduha Gülhal Bozkir, Ufuk Ö. Mete, Özkan Oğuz
Effects Of Phorbol Myristate Acetate On The Liver: A Biochemical And Ultrastructural Study, Memduha Gülhal Bozkir, Ufuk Ö. Mete, Özkan Oğuz
Turkish Journal of Veterinary & Animal Sciences
The effects of free radicals in the liver tissue of 20 mice were studied. The mice, separated into acute and chronic groups, were injected with phorbol myristate acetate (PMA) to trigger the release of free radicals. For evaluation of the effects of free radicals, malandialdehyde (MDA) measurement and electron microscopic examination were performed. The results showed that the level of lipid peroxide in the chronic PMA group was significantly higher than it was in the acute PMA group (P
Ultrastructure Of The Cortex Of The Rumen Ciliate Ophryoscolex Purkynjei Stein, 1858 (Entodiniomorphida: Ophryoscolecidae), Gürsel Ergen, Bayram Göçmen, Beri̇a Falakali Mutaf
Ultrastructure Of The Cortex Of The Rumen Ciliate Ophryoscolex Purkynjei Stein, 1858 (Entodiniomorphida: Ophryoscolecidae), Gürsel Ergen, Bayram Göçmen, Beri̇a Falakali Mutaf
Turkish Journal of Zoology
The ultrastructure of the cortex of Ophryoscolex purkynjei,an entodiniomorphid ciliate obtained from domesticated cattle rumens, was studied and found to have five layers. A particulate and/or filamentous glycocalyx layer, triple membrane layer, homogeneous epiplasmic layer with very fine grains, microtubular layer characterized with a double row of microtubule bundles each containing at most 6 units, and a compact microfilamentous layer were identified. In addition, scarce and disorganized kinetosomes and related microtubules were found to lie underneath all of these. These observations are discussed with reference to the findings of previous studies of other entodiniomorphid ciliates.
The Electron Microscopic Structures Of The Two Ciliated Species Living Endocommensally In The Digestive System Of Rana Ridibunda (Amphibia-Anura), Naci̇ye Gülkiz Şenler, Ni̇met Öktem
The Electron Microscopic Structures Of The Two Ciliated Species Living Endocommensally In The Digestive System Of Rana Ridibunda (Amphibia-Anura), Naci̇ye Gülkiz Şenler, Ni̇met Öktem
Turkish Journal of Zoology
In this study ultrastructures of Balantidium elongatum and B.duodeni obtained from the digestive system of Rana ridibunda have been examined. In addition to the kinetodesmal fibril and microtubular fibrils orijinating from each kinetosome, a vacuolar zone, microtubular bundles and other cytoplasmic structures have been described by electron microscopy.
The Ultrastructure Of The Parasite And The Mucus Cellrelationship And Endogenous Stages Of Cryptosporidium Murisin The Stomach Of Laboratory Mice, Yilmaz Aydin
Turkish Journal of Veterinary & Animal Sciences
The ultrastructure of endogenous stages of Cryptosporidium muris in the stomach of laboratory mice was studied by transmission electron microscopy. Electron microscopy showed the various developmental stages as free in the gastric gland lumina and attached to the mucus cells. The changes in organelle composition and structure of various stages from the sporozoite to young trophozoites and matured oocysts were demonstrated in detail. Two types of the meront were discriminated. The finding of a microgamete on the parasitophorous vacuolar membrane surrounded a macrogamont was interesting for the stage of fertilization in C. muris. Types 1 and 2 wall-forming bodies were …