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Acta Histochemica

Petra Kraus, Rachel Yerden, Victoria Kocsis, Thomas Lufkin
Degeneration of the intervertebral disc (IVD) is a meritorious target for therapeutic cell based regenerative medicine approaches, however, controversy over what defines the precise identity of mature IVD cells and lack of single cell based quality control measures is of concern. Bos taurus and human IVDs are histologically more similar than is Mus musculus. The mature bovine IVD is well suited as model system for technology development to be translated into therapeutic cell based regenerative medicine applications...
January 4, 2017: Acta Histochemica
Talita Gianello Gnoato Zotz, Luiz Guilherme A Capriglione, Rafael Zotz, Lucia Noronha, Marina Louise Viola De Azevedo, Hilana Rickli Fiuza Martins, Anna Raquel Silveira Gomes
No abstract text is available yet for this article.
December 26, 2016: Acta Histochemica
Danélle Truter, Hans Strijdom, Frans Everson, Sanet H Kotzé
Mucins, secreted by intestinal goblet cells, form an integral part of the intestinal biofilm, which is important for the functioning of a healthy gastrointestinal tract (GIT). This mucous layer is sensitive to factors such as diet, drugs and inflammation. Histochemically, mucins can be classified as neutral or acidic, where acidic mucins can contain sulphate groups (sulphomucins) or sialic acid (sialomucins). The aim of the present study was to determine the composition of various mucin secreting cells using histochemical stains in rats fed on a high calorie diet (HCD) treated with antiretroviral therapy (ART)...
December 22, 2016: Acta Histochemica
Waleephan Tancharoen, Sirinda Aungsuchawan, Peraphan Pothacharoen, Runchana Markmee, Suteera Narakornsak, Junjira Kieodee, Nonglak Boonma, Witoon Tasuya
Endothelial dysfunction is a principle feature of vascular-related disease. Endothelial cells have been acquired for the purposes of the restoration of damaged tissue in therapeutic angiogenesis. However, their use is limited by expansion capacity and the small amount of cells that are obtained. Human amniotic fluid mesenchymal stem cells (hAF-MSCs) are considered an important source for vascular tissue engineering. In this study, hAF-MSCs were characterized and then induced in order to differentiate into the endothelial-like cells...
December 22, 2016: Acta Histochemica
Íria Gabriela Dias Dos Santos, Erika Cristina Jorge, Aline Gonçalves Lio Copola, Bruno Machado Bertassoli, Alfredo Miranda de Goes, Gerluza Aparecida Borges Silva
Odontogenesis is guided by a complex signaling cascade in which several molecules, including FGF2-4, ensure all dental groups development and specificity. Most of the data on odontogenesis derives from rodents, which does not have all dental groups. Didelphis albiventris is an opossum with the closest dentition to humans, and the main odontogenesis stages occur when the newborns are in the pouch. In this study, D. albiventris postnatals were used to characterize the main stages of their molars development; and also to establish FGF2, FGF3 and FGF4 expression pattern...
December 21, 2016: Acta Histochemica
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
José Rosa Gomes, Laís Costa Ayub, Camila Audrey Dos Reis, Miriam Joice Machado, Jéssica da Silva, Nádia Fayez Omar, Maria Albertina de Miranda Soares
This study aimed to evaluate the temporal and spacial distribution of the mucins produced by goblet cells and intestinal alkaline phosphatase (IAP) expression during the development of the small intestine of the rat. Intestines were removed from rats on the 15th, 17th and 18th days of intratuterine life (i.u.) and on the 3rd, 10th, 17th and 25th days after birth (a.b.). Intestines were processed for routine histological procedures and sections were submitted to histochemistry using PAS to stain neutral glycoproteins and Alcian blue for acidic glycoproteins, as well as immunohistochemistry to detect IAP...
January 2017: Acta Histochemica
Elton Luiz Scudeler, Ana Silvia Gimenes Garcia, Patricia Fernanda Felipe Pinheiro, Daniela Carvalho Dos Santos
Cytomorphological changes, by means of ultrastructural analyses, have been used to determine the effects of the biopesticide neem oil on the muscle fibers of the midgut of the predator Ceraeochrysa claveri. Insects, throughout the larval period, were fed eggs of Diatraea saccharalis treated with neem oil at a concentration of 0.5%, 1% or 2%. In the adult stage, the midgut was collected from female insects at two stages of adulthood (newly emerged and at the start of oviposition) and processed for ultrastructural analyses...
January 2017: Acta Histochemica
Asterios Triantafyllou, David Fletcher
Normal posterior deep and superficial salivary glands of tongue were examined in male mice by means of light microscopical histochemistry and neurohistology. Both glands showed acini and simple ducts. Demilunes were present in the superficial gland. Disulphides and neutral mucosubstances occurred in acini and demilunes. Tryptophan staining was seen in acini of the deep gland and demilunes, whereas acid mucosubstances were exclusively localised in the superficial gland. Dehydrogenase activities were widespread...
January 2017: Acta Histochemica
Jae-Kwang Jung, Hye-In Jung, Sanjiv Neupane, Ki-Rim Kim, Ji-Youn Kim, Hitoshi Yamamoto, Sung-Won Cho, Youngkyun Lee, Hong-In Shin, Wern-Joo Sohn, Jae-Young Kim
In mice, tongue epithelial differentiation is mainly regulated by the interactions among various signalling molecules including Fgf signalling pathways. However, the subsequent signalling modulations for epithelial maturation, initiated by Fgf signalling, remain to be elucidated. Therefore, we employed an in vitro tongue organ cultivation system along with the applications of various pharmacological inhibitors against the intracellular signalling molecules of Fgf signalling pathways, including H89, LY294002, PD98059, and U0126...
January 2017: Acta Histochemica
Takuya Yokoyama, Tomoyuki Saino, Nobuaki Nakamuta, Yoshio Yamamoto
We investigated the topographic distribution and morphology of serotonin (5-HT)-immunoreactive endocrine cells in the urethra of male rats, and focused on their relationship with peptidergic nerve fibers immunoreactive for calcitonin gene-related peptide (CGRP). Urethral endocrine cells immunoreactive for 5-HT were densely distributed in the epithelial layers of the prostatic part, but were sparsely distributed in the membranous and spongy parts of urethra. Distribution of urethral endocrine cells with 5-HT immunoreactivity in the prostatic part was restricted from the internal urethral orifice to the region of seminal colliculus...
January 2017: Acta Histochemica
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...
January 2017: Acta Histochemica
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...
January 2017: Acta Histochemica
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...
January 2017: Acta Histochemica
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...
January 2017: Acta Histochemica
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...
January 2017: Acta Histochemica
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...
January 2017: Acta Histochemica
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...
January 2017: Acta Histochemica
Imane Hammoum, Sihem Mbarek, Ahmed Dellaa, Elisabeth Dubus, Basma Baccouche, Rached Azaiz, Ridha Charfeddine, Serge Picaud, Rafika Ben Chaouacha-Chekir
Diabetic retinopathy is a common complication of type 2 diabetes and the leading cause of blindness in adults of working age. The aim of this work was to study the repercussions of high fat diet (HFD) induced diabetes on the retina of Meriones shawi ( Two groups of six each was studied. Group I was a normal control, fed with standard laboratory granules. In Group II, rodents received a HFD of enriched laboratory granules, for a period of 3 months. Body weight and plasma glucose were determined in the two groups...
January 2017: Acta Histochemica
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...
October 2016: Acta Histochemica
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