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Acta Histochemica

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https://www.readbyqxmd.com/read/27919431/immunoreactivities-of-nf-%C3%AE%C2%BAb-il-1%C3%AE-and-il-1r-in-the-skin-of-chinese-brown-frog-rana-dybowskii
#1
Liqin Xi, Ruiqi Hu, Ting Guo, Yuhan Wang, Xia Sheng, Yingying Han, Zhengrong Yuan, Qiang Weng, Meiyu Xu
The cytokine interleukin-1 beta (IL-1β) is an evolutionarily conserved molecule that was originally identified in the immune system. Nuclear factor κB (NF-κB) plays a critical role in the activation of immune cells by upregulating the expression of many cytokines. In this study, we investigated the localization and expression level of IL-1β, its functional membrane receptor type I (IL-1R1) and NF-κB in the skin of Rana dybowskii during the breeding period and pre-hibernation. Histologically, the skin of Rana dybowskii consists of epidermis and dermis, and four kinds of cells were identified in the epidermis during the breeding period and pre-hibernation, while the dermis was composed of homogenous gel, mucous glands and granular glands...
December 2, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27916273/identification-of-agnors-and-cytopathological-changes-in-oral-lichen-planus-lesions
#2
Stefânia Jeronimo Ferreira, Maria Ângela Naval Machado, Antônio Adilson Soares de Lima, Aline Cristina Batista Rodrigues Johann, Ana Maria Trindade Grégio, Luciana Reis Azevedo-Alanis
OBJECTIVE: To evaluate cytopathological changes in epithelial cells of the oral mucosa of patients with oral lichen planus (OLP) compared with patients without OLP. SUBJECTS AND METHODS: Swabs were collected from the oral mucosa of 20 patients with OLP (case group) and 20 patients without OLP (control group) using liquid-based cytology. After Papanicolaou staining, the smears were characterized based on Papanicolaou classification and degree of maturation. Nuclear area (NA) measurements, cytoplasmic area (CA) measurements, and the NA/CA ratio were determined from 50 epithelial cells per slide...
December 1, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27889068/diosgenin-caused-changes-of-the-adrenal-gland-histological-parameters-in-a-rat-model-of-the-menopause
#3
Vladimir Ajdžanović, Ivana Jarić, Marko Miler, Branko Filipović, Branka Šošić-Jurjević, Nataša Ristić, Dragan Milenkovic, Verica Milošević
Diosgenin, a steroidal sapogenin of natural origin, has demonstrated benefits when it comes to the treatment of malignancies, cardiovascular issues and menopausal symptoms. In this study, we investigated the histological changes of the adrenal gland after diosgenin application in a rat model of the menopause. Middle-aged, acyclic female Wistar rats were divided into control (C; n=6) and diosgenin treated (D; n=6) groups. Diosgenin (100mg/kg b.w./day) was orally administered for four weeks, while C group received the vehicle alone...
November 23, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27887793/antiproliferative-and-antimetastatic-action-of-quercetin-on-a549-non-small-cell-lung-cancer-cells-through-its-effect-on-the-cytoskeleton
#4
Anna Klimaszewska-Wiśniewska, Marta Hałas-Wiśniewska, Magdalena Izdebska, Maciej Gagat, Alina Grzanka, Dariusz Grzanka
To our knowledge, this study is the first to investigate the effect of the dietary flavonoid quercetin on the main cytoskeletal elements, namely microfilaments, microtubules and vimentin intermediate filaments, as well as cytoskeleton-driven processes in A549 non-small cell lung cancer cells. The methyl-thiazol-diphenyl-tetrazolium assay, annexin V/propidium iodide test, electron microscopic examination, cell cycle analysis based on DNA content, real-time PCR assays, in vitro scratch wound-healing assay, fluorescence staining of F-actin, β-tubulin and vimentin were performed to assess the effects of quercetin on A549 cells...
November 22, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27884396/effects-of-visfatin-on-the-apoptosis-of-intestinal-mucosal-cells-in-immunological-stressed-rats
#5
Ying Zhou, Huai-Rui Yuan, Lu Cui, Abdur Rahman Ansari, Ke Xiao, You Luo, Xin-Tong Wu, Liang Guo, Faheem Ahmed Khan, Zhi Yang, Hui Song
This study was undertaken to determine if visfatin is involved in the inflammation or apoptosis introduced by LPS in rats. Forty 8-week old Wistar rats were divided into four groups (n=10 in each group) and injected with saline, visfatin, LPS and visfatin+LPS co-stimulated via caudal vein. The duodenum, jejunum and ileum were harvested from all the rats. Compared to the saline treated group, visfatin significantly increased the number of TUNEL-positive apoptotic cells and the expression of caspase-3 protein in intestinal mucosa...
November 21, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27876349/morphological-study-on-the-pressure-ulcer-like-dermal-lesions-formed-in-the-rat-heel-skin-after-transection-of-the-sciatic-nerves
#6
Daijiro Haba, Chie Minami, Miki Miyagawa, Takamitsu Arakawa, Akinori Miki
Due to transection of bilateral sciatic nerves, pressure ulcer-like dermal lesion occurred in the hairy skin covering of the heel skin in almost all rats. In the present study, chronological changes of the rat heel skin after the transection were morphologically and immunohistochemically examined. In the heel skin, redness and swelling began by 3days after the operation, and open wound formed by 17days. At the redness and swelling stage, edema extensively occurred in the dermis. At the thickening stage, the epidermis at the pressed site became transiently thicker, and at the whitening stage, rapidly thinner...
November 19, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27863709/the-neuronal-basis-of-copper-induced-modulation-of-anxiety-state-in-rat
#7
Abbaoui Abdellatif, E L Hiba Omar, Gamrani Halima
Recently, studies have provided strong evidence indicating the involvement of trace elements in the physiopathology of psychiatric disorders, particularly anxiety. We aimed, through the present study, to describe the effect of acute exposure to Cu (10mg/kg BW) on anxiety state together with the serotoninergic and dopaminergic systems in rat by means of neurobehavioral tests (elevated plus maze, dark light box) and immunohistochemistry using anti-serotonin (5HT) and anti-tyrosine hydroxylase (TH). Our data report that Cu enhanced 5HT innervation in the dorsal raphe nucleus (DRN) together with a loss of TH expression within the ventral tegmental area (VTA), Substantia nigra compacta (SNc) and their subsequent outputs including the medial forebrain bundle (MFB) and striatum...
November 15, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27863708/nuclear-distribution-of-the-chromatin-remodeling-protein-atrx-in-mouse-early-embryogenesis
#8
Zhuldyz K Sailau, Dmitry S Bogolyubov, Irina O Bogolyubova
The nucleus of mammalian embryos differs by transcriptional activity at different stages of early development. Here, we studied nuclear distribution of the chromatin-remodeling protein ATRX in pre-implantation mouse embryos. Immunofluorescent staining revealed the changes of ATRX nuclear distribution at the initial stages of early mouse development. At the stage of early zygote, a diffuse ATRX distribution pattern was prevalent. During the course of zygotic genome activation (ZGA), zones of increased ATRX concentration are observed, and they are most expressed in the nuclei of late 2-cell embryos...
November 15, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27825705/hypoxia-induced-increases-in-serotonin-immunoreactive-nerve-fibers-in-the-medulla-oblongata-of-the-rat
#9
Ryosuke Morinaga, Nobuaki Nakamuta, Yoshio Yamamoto
Hypoxia induces respiratory responses in mammals and serotonergic neurons in the medulla oblongata participate in respiratory control. However, the morphological changes in serotonergic neurons induced by hypoxia have not yet been examined and respiratory controls of serotonergic neurons have not been clarified. We herein investigated the distribution of immunoreactivity for serotonin (5-hydroxytryptamine; 5-HT) in the medulla oblongata of control rats and rats exposed to 1-6h of hypoxia (10% O2). We also examined the medulla oblongata by multiple immunofluorescence labeling for 5-HT, neurokinin 1 receptors (NK1R), a marker for some respiratory neurons in the pre-Bötzinger complex (PBC), and dopamine β-hydroxylase (DBH), a marker for catecholaminergic neurons...
November 5, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27823775/similar-expression-pattern-of-nherf1-and-ezrin-in-papillary-but-not-in-solid-areas-of-human-serous-ovarian-carcinomas
#10
Brenda Demacopulo, Baltazar Eduardo Lema, Rómulo Luis Cabrini, Erica Lorena Kreimann
NHERF1 is an adaptor protein expressed in the apical membrane of polarized epithelia, which interacts with the EZRIN-Radixin-Moesin (ERM) family of proteins connecting signaling pathways to the cell cytoskeleton. NHERF1 and EZRIN cooperate in the maintenance of the apical microvilli in polarized epithelial cells. In several types of cancers, NHERF1 and EZRIN are displaced from the apical compartment to the cytoplasm and nuclei of cancer cells. At the present, the distribution of NHERF1 in ovarian tumors is not well known...
November 4, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27817864/cytoskeletal-reorganization-and-cell-death-in-mitoxantrone-treated-lung-cancer-cells
#11
Andrzej Pawlik, Mariusz Andrzej Szczepanski, Anna Klimaszewska-Wisniewska, Lidia Gackowska, Agnieszka Zuryn, Alina Grzanka
The aim of this study was to investigate the cytotoxic effect of mitoxantrone on two human non-small cell lung cancer cell lines, A549 (p53+) and H1299 (p53-). To our knowledge, this is the first study to evaluate the impact of MXT on the organization of cytoskeletal proteins. Analyses were performed using fluorescence and transmission electron microscopy, spectrophotometric techniques, flow cytometry and Western blotting. It was shown that H1299 cells are significantly more sensitive to mitoxantrone than the A549 cell line, and that the growth-inhibitory effect of the drug is dose-dependent only after longer incubation...
November 3, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27692814/concomitant-and-discrete-expressions-of-aldose-reductase-and-sorbitol-dehydrogenase-in-the-male-reproductive-tract
#12
Muktanand Tripathi, Akhand Pratap Singh, Gopal Gupta, Singh Rajender
This study aimed at investigating the expression and localization of the polyol pathway enzymes; aldose reductase (AR) and sorbitol dehydrogenase (SDH), in the male reproductive tract of rat. Gene expression analysis showed maximum expression of AR and SDH in the coagulating glands. Western blot analysis showed a coordinated presence of the two enzymes in the coagulating glands, seminal vesicle and epididymis. Immunohistochemistry showed a concordant expression of the two enzymes in the coagulating gland, which goes well with its function of fructose production in rats...
September 29, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27692876/expression-of-nitric-oxide-containing-structures-in-the-rat-carotid-body
#13
Dimitrinka Y Atanasova, Nikolay D Dimitrov, Nikolai E Lazarov
The carotid body (CB) is a major peripheral arterial chemoreceptor organ that evokes compensatory reflex responses so as to maintain gas homeostasis. It is dually innervated by sensory fibers from petrosal ganglion (PG) neurons, and autonomic fibers from postganglionic sympathetic neurons of the superior cervical ganglion (SCG) and parasympathetic vasomotor fibers of intrinsic ganglion cells in the CB. The presence of nitric oxide (NO), a putative gaseous neurotransmitter substance in a number of neuronal and non-neuronal structures, was examined in the CB, PG and SCG of the rat using nicotinamide adenine dinucleotide phosphate diaphorase (NADPH-d) histochemistry, nitric oxide synthase (NOS) immunohistochemistry and retrograde tracing...
September 28, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27692875/bioactive-molecules-derived-from-umbilical-cord-mesenchymal-stem-cells
#14
Lipeng Bai, Danting Li, Jie Li, Zhengzhong Luo, Shumin Yu, Suizhong Cao, Liuhong Shen, Zhicai Zuo, Xiaoping Ma
Umbilical cord mesenchymal stem cells (UCMSCs) retain their intrinsic stem cell potential while at the same time displaying high proliferation rates, powerful differentiation capacity, and low immunogenicity. They can also secrete multiple bioactive molecules that exert specific physiological functions. Thus, UCMSCs represent excellent candidates for cell therapy in regenerative medicine and tissue engineering. Abundant preclinical research on different disease models has shown that UCMSCs can accelerate wound or nerve damage recovery and suppress tumor progression...
September 28, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27692234/nadph-diaphorase-reactivity-and-fos-immunoreactivity-within-the-ventral-horn-of-the-lumbar-spinal-cord-of-cats-submitted-to-acute-muscle-inflammation-induced-by-injection-of-carrageenan
#15
Vladimir A Maisky, Olena P Mankivska, Andriy V Maznychenko, Oleh V Vlasenko, Olexandr V Dovgan', Eike D Schomburg, Heinz Steffens
The NADPH-diaphorase activity and Fos-immunoreactivity within the ventral horn of the lumbar spinal cord were studied in cats with acute unilateral myositis following injection of carrageenan into the m.m. gastrocnemius-soleus. In carrageenan-injected cats maximum in the mean number of intensely stained NADPH-diaphorase reactive (NADPH-dr) neurons was found in lamina VII (+100%) and VIII (+33%) of the contralateral ventral horn of the L6/L7 segments as compared with control animals. The maximumal level of Fos-immunoreactivity was registered in the same laminae with ipsilateral predominance (39...
September 27, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27670789/postnatal-morphological-and-lectin-histochemical-observation-of-the-submucosal-glands-of-rat-nasopharynx
#16
Zaki Hakami, Satoshi Wakisaka
The development of submucosal glands of rat nasopharynx was studied with respect to their morphological maturation and glycoprotein alterations during the postnatal period. This study examined the histological morphology with hematoxylin-eosin and the binding pattern of lectins, soybean agglutinin (SBA), Dolichos biflorus agglutinin (DBA), Vicia villosa agglutinin (VVA), Ulex europaeus agglutinin-I (UEA-I), peanut agglutinin (PNA), wheat germ agglutinin (WGA), and succinylated WGA (sucWGA) on frozen sections from newborn into adulthood...
September 23, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27660197/presence-and-distribution-of-leptin-and-leptin-receptor-in-the-canine-gallbladder
#17
Sungin Lee, Aeri Lee, Oh-Kyeong Kweon, Wan Hee Kim
The hormone leptin is produced by mature adipocytes and plays an important role in regulating food intake and energy metabolism through its interaction with the leptin receptor. In addition to roles in obesity and obesity-related diseases, leptin has been reported to affect the components and secretion of bile in leptin-deficient mice. Furthermore, gallbladder diseases such as cholelithiasis are known to be associated with serum leptin concentrations in humans. We hypothesized that the canine gallbladder is a source of leptin and that the leptin receptor may be localized in the gallbladder, where it plays a role in regulating the function of this organ...
September 19, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27640084/mt1-mmp-and-its-potential-role-in-the-vertebrate-intestinal-morphogenesis
#18
K C Camargo, J R Gomes, M M Loddi, R de Sordi, C L S Costa-Ayub, M A de M Soares
Membrane type 1-matrix metalloproteinase (MT1-MMP) is involved in numerous biological processes, including morphogenesis. However, the role of MT1-MMP in the development of the vertebrate intestine is poorly understood. This study aimed to evaluate the expression of MT1-MMP in the intestine of rats and chickens along the embryonic and postnatal periods using immunohistochemistry. Results revealed a remarkable spatiotemporal correlation between MT1-MMP expression and intestinal villi morphogenesis in both vertebrates...
September 14, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27614947/enhanced-expression-of-immediate-early-genes-in-mouse-hippocampus-after-trimethyltin-treatment
#19
Sueun Lee, Sohi Kang, Juhwan Kim, Seongwook Yoon, Sung-Ho Kim, Changjong Moon
Immediate-early genes (IEGs) are transiently and rapidly activated in response to various cellular stimuli. IEGs mediate diverse functions during pathophysiologic events by regulating cellular signal transduction. We investigated the temporal expression of several IEGs, including c-fos, early growth response protein-1 (Egr-1), and activity-regulated cytoskeleton-associated protein (Arc), in trimethyltin (TMT)-induced hippocampal neurodegeneration. Mice (7 weeks old, C57BL/6) administered TMT (2.6mg/kg intraperitoneally) presented severe neurodegenerative lesions in the dentate gyrus (DG) and showed behavioral seizure activity on days 1-4 post-treatment, after which the lesions and behavior recovered spontaneously over time...
September 7, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27612612/reciprocal-localization-of-transcription-factors-yy1-and-cp2c-in-spermatogonial-stem-cells-and-their-putative-roles-during-spermatogenesis
#20
Ji Sook Kim, Ji Hyung Chae, Yong-Pil Cheon, Chul Geun Kim
Maintaining stemness and permitting differentiation mediated by combinations of transcription factors (TFs) are key aspects of mammalian spermatogenesis. It has been established that yin yang 1 (YY1), a target factor of mammalian polycomb repressive complex 2 (PRC2) and a regulator of stemness, is involved in the stable maintenance of prophase stage spermatocytes. Recently, we have demonstrated that the TF CP2c partners with YY1 in some cells to antagonistically regulate the other protein's function. To date, the functional roles of YY1 and CP2c in spermatogonial stem cells and their derived germ cells remain unclear...
September 6, 2016: Acta Histochemica
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