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Landzhov B, Hinova-Palova D, Edelstein L, Dzhambazova E, Brainova I, Georgiev GP, Ivanova V, Paloff A, Ovtscharoff W. Comparative investigation of neuronal nitric oxide synthase immunoreactivity in rat and human claustrum. J Chem Neuroanat 2017; 86:1-14. [DOI: 10.1016/j.jchemneu.2017.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 07/05/2017] [Accepted: 07/06/2017] [Indexed: 01/22/2023]
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Hinova-Palova D, Landzhov B, Dzhambazova E, Edelstein L, Minkov M, Fakih K, Minkov R, Paloff A, Ovtscharoff W. NADPH-diaphorase-positive neurons in the human inferior colliculus: morphology, distribution and clinical implications. Brain Struct Funct 2016; 222:1829-1846. [DOI: 10.1007/s00429-016-1310-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2015] [Accepted: 09/11/2016] [Indexed: 12/18/2022]
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Hinova-Palova DV, Landzhov B, Dzhambazova E, Minkov M, Edelstein L, Malinova L, Paloff A, Ovtscharoff W. Neuropeptide Y immunoreactivity in the cat claustrum: A light- and electron-microscopic investigation. J Chem Neuroanat 2014; 61-62:107-19. [PMID: 25157673 DOI: 10.1016/j.jchemneu.2014.08.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 08/15/2014] [Accepted: 08/16/2014] [Indexed: 11/28/2022]
Abstract
The claustrum is a telencephalic nucleus located ventrolateral to the basal ganglia in the mammalian brain. It has an extensive reciprocal connectivity with most if not all of the cerebral cortex, in particular, primary sensory areas. However, despite renewed and growing interest amongst investigators, there remains a paucity of data concerning its peptidergic profile. The aim of the present study was to examine the presence, morphology, distribution and ultrastructure of neuropeptide Y-immunoreactive (NPY-ir) neurons and fibers in the claustrum of the cat. Ten adult healthy cats from both sexes were used. All animals received human and ethical treatment in accordance with the Principles of Laboratory Animal Care. Subjects were irreversibly anesthetized and transcardially perfused with fixative solution containing glutaraldehyde and paraformaldehyde. Brains were promptly removed, postfixed and sectioned. Slices were incubated with polyclonal anti-NPY antibodies according to the standard avidin-biotin-peroxidase complex method adopted by our Department of Anatomy, Histology and Embryology. NPY-ir neurons and fibers were found to be diffusely distributed throughout the claustrum, with no obvious topographic or functional patterning other than larger numbers in its central/broadest part (stereotaxic planes A12-A16). Neurons were generally classified by diameter into three sizes: small (under 17 μm), medium (17-25 μm) and large (over 25 μm). Staining density is varied with some neurons appearing darker than others. At the electron-microscopic level NPY immunoproduct was observed within neurons, dendrites and terminal boutons, each differing relative to their ultrastructural attributes. Two types of NPY-ir synaptic boutons were found. Lastly, it is of interest to note that gender-specific differences were not observed.
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Affiliation(s)
- D V Hinova-Palova
- Department of Anatomy, Histology and Embryology, Medical University of Sofia, 1431 Sofia, Bulgaria
| | - B Landzhov
- Department of Anatomy, Histology and Embryology, Medical University of Sofia, 1431 Sofia, Bulgaria.
| | - E Dzhambazova
- Department of Chemistry, Biochemistry, Physiology and Pathophysiology, Sofia University "St. Kliment Ohridski", 1407 Sofia, Bulgaria
| | - M Minkov
- Department of Anatomy, Histology and Embryology, Medical University of Varna, 9002 Varna, Bulgaria
| | - L Edelstein
- Medimark Corporation, P.O. Box 2316, Del Mar, CA 92014, USA
| | - L Malinova
- Department of Anatomy, Histology and Embryology, Medical University of Sofia, 1431 Sofia, Bulgaria
| | - A Paloff
- Department of Anatomy, Histology and Embryology, Medical University of Sofia, 1431 Sofia, Bulgaria
| | - W Ovtscharoff
- Department of Anatomy, Histology and Embryology, Medical University of Sofia, 1431 Sofia, Bulgaria
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Hinova-Palova DV, Edelstein L, Landzhov B, Minkov M, Malinova L, Hristov S, Denaro FJ, Alexandrov A, Kiriakova T, Brainova I, Paloff A, Ovtscharoff W. Topographical distribution and morphology of NADPH-diaphorase-stained neurons in the human claustrum. Front Syst Neurosci 2014; 8:96. [PMID: 24904317 PMCID: PMC4034338 DOI: 10.3389/fnsys.2014.00096] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 05/06/2014] [Indexed: 12/21/2022] Open
Abstract
We studied the topographical distribution and morphological characteristics of NADPH-diaphorase-positive neurons and fibers in the human claustrum. These neurons were seen to be heterogeneously distributed throughout the claustrum. Taking into account the size and shape of stained perikarya as well as dendritic and axonal characteristics, Nicotinamide adenine dinucleotide phosphate-diaphorase (NADPHd)-positive neurons were categorized by diameter into three types: large, medium and small. Large neurons ranged from 25 to 35 μm in diameter and typically displayed elliptical or multipolar cell bodies. Medium neurons ranged from 20 to 25 μm in diameter and displayed multipolar, bipolar and irregular cell bodies. Small neurons ranged from 14 to 20 μm in diameter and most often displayed oval or elliptical cell bodies. Based on dendritic characteristics, these neurons were divided into spiny and aspiny subtypes. Our findings reveal two populations of NADPHd-positive neurons in the human claustrum-one comprised of large and medium cells consistent with a projection neuron phenotype, the other represented by small cells resembling the interneuron phenotype as defined by previous Golgi impregnation studies.
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Affiliation(s)
- Dimka V Hinova-Palova
- Department of Anatomy, Histology, and Embryology, Medical University Sofia, Bulgaria
| | | | - Boycho Landzhov
- Department of Anatomy, Histology, and Embryology, Medical University Sofia, Bulgaria
| | - Minko Minkov
- Department of Anatomy and Histology, Medical University Varna, Bulgaria
| | - Lina Malinova
- Department of Anatomy, Histology, and Embryology, Medical University Sofia, Bulgaria
| | - Stanislav Hristov
- Department of Forensic Medicine and Deontology, Medical University Sofia, Bulgaria
| | - Frank J Denaro
- Department of Biology, Morgan State University Baltimore, MD, USA
| | - Alexandar Alexandrov
- Department of Forensic Medicine and Deontology, Medical University Sofia, Bulgaria
| | - Teodora Kiriakova
- Department of Forensic Medicine and Deontology, Medical University Sofia, Bulgaria
| | - Ilina Brainova
- Department of Forensic Medicine and Deontology, Medical University Sofia, Bulgaria
| | - Adrian Paloff
- Department of Anatomy, Histology, and Embryology, Medical University Sofia, Bulgaria
| | - Wladimir Ovtscharoff
- Department of Anatomy, Histology, and Embryology, Medical University Sofia, Bulgaria
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Light and electron-microscopic study of leucine enkephalin immunoreactivity in the cat claustrum. J Mol Histol 2012; 43:641-9. [DOI: 10.1007/s10735-012-9448-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2012] [Accepted: 08/31/2012] [Indexed: 11/29/2022]
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Hinova-Palova D, Edelstein L, Paloff A, Hristov S, Papantchev V, Ovtscharoff W. Neuronal nitric oxide synthase immunopositive neurons in cat claustrum—a light and electron microscopic study. J Mol Histol 2008; 39:447-57. [DOI: 10.1007/s10735-008-9184-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2008] [Accepted: 07/15/2008] [Indexed: 12/22/2022]
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Expression and colocalization of NADPH-diaphorase and heme oxygenase-2 in trigeminal ganglion and mesencephalic trigeminal nucleus of the rat. J Mol Histol 2008; 39:427-33. [DOI: 10.1007/s10735-008-9181-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2008] [Accepted: 07/03/2008] [Indexed: 12/19/2022]
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