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Lei YT, Hao YX, Yang Z, Lin ZH, Qin W, Yan JH, Sun Y, Cui LG, Fu Y. Sono-anatomy of the middle cervical sympathetic ganglion verified with pathology. Heliyon 2024; 10:e24231. [PMID: 38293494 PMCID: PMC10825480 DOI: 10.1016/j.heliyon.2024.e24231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 11/07/2023] [Accepted: 01/04/2024] [Indexed: 02/01/2024] Open
Abstract
Objectives Cervical discomfort and other symptoms may be attributable to the middle cervical sympathetic ganglion. The aim of this study was to explore the sonographic features of this ganglion in anatomical specimens and cadavers and evaluate the feasibility of its visualization using high-resolution ultrasonography. Methods We examined three cervical sympathetic-ganglion specimens and two fresh cadavers using high-resolution ultrasound to explore the sonographic features of this ganglion. Basic imaging characteristics examined included the shape, echo intensity, and location of the ganglion. Core-needle biopsy was performed to examine the suspected middle cervical sympathetic ganglion in the two fresh cadavers and verify the accuracy of the sonographic identification via pathological examination. Results The middle cervical sympathetic ganglion appeared on high-resolution ultrasonography as an oval-shaped hypoechoic structure, with at least one continuous hypoechoic line connected to each ending in the anatomical specimens and fresh cadavers, and it was distinctly different from the adjacent lymph nodes. Discussion Based on an adequate understanding of both its location and sonographic features, the direct visualization of the middle cervical sympathetic ganglion using high-resolution ultrasonography is feasible.
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Affiliation(s)
- Yu-Tao Lei
- Department of General Surgery, Peking University Third Hospital, Beijing , China
| | - Yun-Xia Hao
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
| | - Zhen Yang
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
| | - Zhuo-Hua Lin
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
| | - Wen Qin
- Department of Ultrasound, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang City, Hubei Province, China
| | - Jun-Hao Yan
- Department of Anatomy and Embryology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Yang Sun
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
| | - Li-Gang Cui
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
| | - Ying Fu
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
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Yoo YM, Kim KH. Facet joint disorders: from diagnosis to treatment. Korean J Pain 2024; 37:3-12. [PMID: 38072795 PMCID: PMC10764212 DOI: 10.3344/kjp.23228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/16/2023] [Accepted: 10/19/2023] [Indexed: 12/30/2023] Open
Abstract
One of the most common sources of spinal pain syndromes is the facet joints. Cervical, thoracic, and lumbar facet joint pain syndromes comprise 55%, 42%, and 31% of chronic spinal pain syndromes, respectively. Common facet joint disorders are degenerative disorders, such as osteoarthritis, hypertrophied superior articular process, and facet joint cysts; septic arthritis; systemic and metabolic disorders, such as ankylosing spondylitis or gout; and traumatic dislocations. The facet pain syndrome from osteoarthritis is suspected from a patient's history (referred pain pattern) and physical examination (tenderness). Other facet joint disorders may cause radicular pain if mass effect from a facet joint cyst, hypertrophied superior articular process, or tumors compress the dorsal root ganglion. However, a high degree of morphological change does not always provoke pain. The superiority of innervating nerve block or direct joint injection for diagnosis and treatment is still a controversy. Treatment includes facet joint injection in facet joint osteoarthritis or whiplash injury provoking referred pain or decompression in mass effect in cases of hypertrophied superior articular process or facet joint cyst eliciting radicular pain. In addition, septic arthritis is treated using a proper antibiotic, based on infected tissue or blood culture. This review describes the diagnosis and treatment of common facet joint disorders.
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Affiliation(s)
- Yeong-Min Yoo
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Korea
| | - Kyung-Hoon Kim
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Korea
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Erdemi S, Oğuz Ş, Aydoğan C, Bektaş O, Teymur A, Aydoğan Z, Bal EM, Tayar H. Brain damage evaluation via arterial spin labeling perfusion imaging for patients with aneurysmal subarachnoid hemorrhage. Radiologie (Heidelb) 2023; 63:98-107. [PMID: 37950077 DOI: 10.1007/s00117-023-01228-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 09/11/2023] [Indexed: 11/12/2023]
Abstract
OBJECTIVE Subarachnoid hemorrhage (SAH) is a neurological condition with an annual incidence of 6-22 per 100,000. Despite many advances in diagnosis, the rates of mortality and morbidity in patients remain high. The most important reason for this is complications accompanied by perfusion changes. The aim of our study was to show the perfusion changes with arterial spin labelling (ASL) after SAH. MATERIALS AND METHODS In this prospective study, 23 patients diagnosed with aneurysmal SAH were evaluated by ASL perfusion imaging between days 1-3 and 8-10. The mean signal intensities (SI) of both hemispheres from the anterior cerebral artery, middle cerebral artery, and basal ganglia were measured manually according to the region of interest. The relationship between the SI values calculated for both cerebral hemispheres, complications, and grading scales of the side with more intense (ipsilateral) and less (contralateral) bleeding were evaluated. RESULTS There was a significant difference in the ipsilateral/contralateral SI ratio (SIIps/ConBGin) (p = 0.015) among all ASL values, including the basal ganglia between days 0-3 and 8-10. There was a significant negative correlation between ASL parameters and rating scale scores. Additionally, when the SIIps/ConBGinDay0-3 ratio cut-off value was ≤ 0.72, the sensitivity and specificity were 57.1% and 100.0%, respectively, in predicting non-fatal complications, and the sensitivity and specificity in predicting all complications, including death, were 55.6% and 100.0%, respectively. CONCLUSION Global or regional perfusion decrease can be shown using ASL, with or without the development of vasospasm, without the need for exogenous contrast agent use.
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Affiliation(s)
| | - Şükrü Oğuz
- Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Cemal Aydoğan
- Trabzon Ahi Evren Thoracic and Cardiovascular Surgery Training and Research Hospital, Trabzon, Turkey
| | - Onur Bektaş
- Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Aykut Teymur
- Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Zeynep Aydoğan
- Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Elif M Bal
- Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Hatice Tayar
- Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
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Abd Elkader HTAE, Al-Shami AS. Chronic exposure to bisphenol A induces behavioural, neurochemical, histological, and ultrastructural alterations in the ganglia tissue of the date mussels Lithophaga lithophaga. Environ Sci Pollut Res Int 2023; 30:109041-109062. [PMID: 37768489 PMCID: PMC10622395 DOI: 10.1007/s11356-023-29853-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023]
Abstract
Bisphenol A (BPA), a common plastic additive, has been demonstrated mechanistically to be a potential endocrine disruptor and to affect a variety of body functions in organisms. Although previous research has shown that BPA is toxic to aquatic organisms, the mechanism of neurotoxic effects in marine bivalves remains unknown. The current study aimed to elucidate the neurotoxic effects of BPA when administered at different concentrations (0.25, 1, 2, and 5 µg/L) for twenty-eight days in the ganglia of a bivalve model, the Mediterranean mussel (Lithophaga lithophaga), which is an ecologically and economically important human food source of bivalve species in the Mediterranean Sea. Our findings revealed an increase in behavioural disturbances and malondialdehyde levels in treated mussel ganglia compared to the control group. Furthermore, superoxide dismutase activity increased in the ganglia of L. lithophaga treated with 0.25 and 2 µg/L. However, at BPA concentrations of 1 and 5 µg/L, SOD activity was significantly reduced, as was total glutathione concentration. BPA causes neurotoxicity, as evidenced by concentration-dependent inhibition of acetylcholinesterase, dopamine, and serotonin. After chronic exposure to BPA, neurons showed distortion of the neuronal cell body and varying degrees of pyknosis. The ultrastructure changes in BPA-treated groups revealed the lightening of the nucleoplasm and a shrunken nuclear envelope. Overall, our findings suggest that BPA exposure altered antioxidation, neurochemical biomarkers, histopathological, and ultrastructural properties, resulting in behavioural changes. As a result, our findings provide a basis for further study into the toxicity of BPA in marine bivalves.
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Affiliation(s)
| | - Ahmed S Al-Shami
- Zoology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
- Biotechnology Department, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
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Chin SH, Allen E, Brack KE, Ng GA. Autonomic neuro-cardiac profile of electrical, structural and neuronal remodeling in myocardial infarction-induced heart failure. J Mol Cell Cardiol Plus 2023; 5:100044. [PMID: 37745157 PMCID: PMC10512199 DOI: 10.1016/j.jmccpl.2023.100044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 07/25/2023] [Accepted: 08/16/2023] [Indexed: 09/26/2023]
Abstract
Aims Heart failure is a clinical syndrome typified by abnormal autonomic tone, impaired ventricular function, and increased arrhythmic vulnerability. This study aims to examine electrophysiological, structural and neuronal remodeling following myocardial infarction in a rabbit heart failure model to establish its neuro-cardiac profile. Methods and results Weight-matched adult male New Zealand White rabbits (3.2 ± 0.1 kg, n = 25) were randomized to have coronary ligation surgeries (HF group, n = 13) or sham procedures (SHM group, n = 12). Transthoracic echocardiography was performed six weeks post-operatively. On week 8, dual-innervated Langendorff-perfused heart preparations were set up for terminal experiments. Seventeen hearts (HF group, n = 10) underwent ex-vivo cardiac MRI. Twenty-two hearts (HF group, n = 7) were examined histologically. Electrical remodeling and abnormal autonomic profile were evident in HF rabbits with exaggerated sympathetic and attenuated vagal effect on ventricular fibrillation threshold, ventricular refractoriness and restitution curves, in addition to increased spatial restitution dispersion. Histologically, there was significant neuronal enlargement at the heart hila and conus arteriosus in HF. Structural remodeling was characterized by quantifiable myocardial scarring, enlarged left ventricles, altered ventricular geometry and impaired contractility. Conclusion In an infarct-induced rabbit heart failure model, extensive structural, neuronal and electrophysiological remodeling in conjunction with abnormal autonomic profile provide substrates for ventricular arrhythmias.
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Affiliation(s)
- Shui Hao Chin
- Cardiology group, Department of Cardiovascular Sciences, University of Leicester, UK
- University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Emily Allen
- Cardiology group, Department of Cardiovascular Sciences, University of Leicester, UK
| | - Kieran E. Brack
- Cardiology group, Department of Cardiovascular Sciences, University of Leicester, UK
| | - G. André Ng
- Cardiology group, Department of Cardiovascular Sciences, University of Leicester, UK
- University Hospitals of Leicester NHS Trust, Leicester, UK
- NIHR Leicester Cardiovascular Biomedical Research Unit, Leicester, UK
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Kankam HKN, Duraku LS, Hundepool CA, George S, Chaudhry T, Power DM. Outcomes Following Surgery for Common Peroneal Nerve Intraneural Ganglion Cysts: A Case Series and Systematic Review. Eplasty 2023; 23:e39. [PMID: 37465473 PMCID: PMC10350873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Background Intraneural ganglia are a rare cause of common peroneal nerve palsy. Although several treatment modalities exist, surgical intervention is recommended, especially in the setting of neurological dysfunction. We present a case series and systematic review on the clinical outcomes following surgical excision of common peroneal nerve intraneural ganglia. Methods We performed a retrospective chart review of all patients who had undergone surgery for common peroneal nerve intraneural ganglia at Queen Elizabeth Hospital in Birmingham, UK, from 2012 to 2022. Demographic and pre- and postoperative findings were collected. A comprehensive literature search of MEDLINE and EMBASE databases was also performed to identify similar studies. Data were subsequently extracted from included studies and qualitatively analyzed. Results Five patients at our center underwent procedures to excise intraneural ganglia. There was a male preponderance. Pain, foot drop, and local swelling were the common presenting features. Postoperatively, all patients who completed follow-up demonstrated improved motor function with no documented cyst recurrence. The systematic review identified 6 studies involving 128 patients with intraneural ganglia treated with surgery. Similar findings were reported, with objective and subjective measures of foot and ankle function and symptoms improving after surgical intervention. The recurrence rate varied from 0% to 25%, although most recurrences were extraneural. Conclusions Excision of intraneural ganglia is associated with symptomatic relief and functional improvement. Recurrence rates are relatively low and are rarely intraneural.
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Affiliation(s)
- Hadyn K N Kankam
- Department of Burns and Plastic Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Liron S Duraku
- Department of Peripheral Nerve Surgery, Queen Elizabeth Hospital, Birmingham, United Kingdom
- Department of Plastic, Reconstructive and Hand Surgery, Amsterdam UMC, Amsterdam, the Netherlands
| | - Caroline A Hundepool
- Department of Plastic, Reconstructive and Hand Surgery, Erasmus MC, Rotterdam, the Netherlands
| | - Samuel George
- Department of Peripheral Nerve Surgery, Queen Elizabeth Hospital, Birmingham, United Kingdom
| | - Tahseen Chaudhry
- Department of Peripheral Nerve Surgery, Queen Elizabeth Hospital, Birmingham, United Kingdom
| | - Dominic M Power
- Department of Peripheral Nerve Surgery, Queen Elizabeth Hospital, Birmingham, United Kingdom
- HaPPeN Research, Institute of Translational Medicine, Birmingham, United Kingdom
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Kim JE, Kang M, Jeong OS, Rhee PL. A Median Arcuate Ligament Syndrome Could Be Re-termed as a Nutcracker Celiac Ganglion Abdominal Pain Syndrome. J Neurogastroenterol Motil 2023; 29:200-207. [PMID: 36717985 PMCID: PMC10083118 DOI: 10.5056/jnm22158] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 11/24/2022] [Accepted: 12/01/2022] [Indexed: 02/01/2023] Open
Abstract
Background/Aims Median arcuate ligament syndrome (MALS) is known as chronic recurrent abdominal pain related to compression of the celiac artery by the median arcuate ligament. We aim to seek the specific mechanism of the pain by evaluating symptoms and radiological characteristics on abdominal CT scans. Methods We analyzed 35 patients who visited the emergency room for recurrent abdominal pain after cholecystectomy. We classified the characteristics of patients as 4 clinical components and 2 radiological components. We defined the sum of weighted clinical scores and weighted radiological scores as nutcracker ganglion abdominal pain syndrome (NCGAPS) scores. We categorized the patients into 3 groups classified by the degree of NCGAPS scores. The 3 patients with top-3 NCGAPS scores were recommended for CT angiography. Results When the suspicion was graded by NCGAPS scores, post stenotic dilatation was significantly different among all groups (P < 0.001). The clinical components of pain varied positional or respirational change and continuous pain were significantly different among all the groups (P < 0.01). NCGAPS scores can remarkably differentiate highly suspicious patients in comparison to simply combined scores. Only 1 patient in the highly suspicious group by NCGAPS scores took the CT angiography and was confirmed with NCGAPS. Conclusions We suggest renaming MALS as NCGAPS, nutcracker celiac ganglion abdominal pain syndrome, to better explain the mechanism of the recurrent abdominal pain. Further studies on the diagnostic cutoff of clinical and radiological scores of NCGAPS are needed not to miss the diagnosis of NCGAPS.
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Affiliation(s)
- Ji Eun Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Mira Kang
- Health Promotion Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.,Digital Innovation Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Digital Health, SAIHST, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ok Soon Jeong
- Department of Data service, Samsung Medical Center, Seoul, Korea
| | - Poong-Lyul Rhee
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Wyse JM, Sahai AV. EUS-guided celiac plexus neurolysis for pancreas cancer - Finally established or still under review? Best Pract Res Clin Gastroenterol 2022; 60-61:101809. [PMID: 36577532 DOI: 10.1016/j.bpg.2022.101809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 11/10/2022] [Indexed: 11/23/2022]
Abstract
Patients with pancreas cancer must deal frequently with intractable and refractory pain. Endoscopic ultrasound guided-celiac plexus neurolysis (EUS-CPN) has been the most studied and used therapeutic technique aimed to destroy the pain fibres that allow the pancreas to communicate with the central nervous system. A neurolytic agent, most commonly ethanol, is optimally spread around the celiac axis in order to reduce pain and mitigate narcotic requirements. This can be performed early to prevent the spiral of pain and medication use, or more historically as salvage therapy. Different techniques to best administer the ethanol for effective EUS-CPN are still being debated. New EUS-guided injection techniques with radiofrequency, radioactive, and/or chemotherapeutic agents need more study.
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Affiliation(s)
- Jonathan M Wyse
- Division of Gastroenterology, Jewish General Hospital, McGill University, Montreal, Canada.
| | - Anand V Sahai
- Division of Gastroenterology, Center Hospitalier de l'Université de Montréal, Montreal, Canada
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Kniazkina M, Dyachuk V. Neurogenesis of the scallop Azumapecten farreri: from the first larval sensory neurons to the definitive nervous system of juveniles. Front Zool 2022; 19:22. [PMID: 35922810 PMCID: PMC9347173 DOI: 10.1186/s12983-022-00468-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 07/27/2022] [Indexed: 11/13/2022] Open
Abstract
Background Scallops are among the best-studied bivalve mollusks. However, adult nervous system and neurogenesis studies of scallops are limited. Here, we studied the localization of neurotransmitters (serotonin/5-HT, FMRFamide, catecholamines) in adult ganglia and larvae of Azumapecten farreri using histochemical and immunohistochemical methods. Results We found peptide FMRFamide in all adult scallop ganglia, whereas 5-HT-like immunoreactive (lir) somata were exclusively detected in the cerebropleural, pedal, and accessory ganglia. Scallop larval neurogenesis starts with the emergence of the 5-HT-lir neurons, which are part of the apical organ (AO) at the early veliger stage. Near the AO, paired anlagen of cerebral ganglion (CG) developed. 5-HT-lir neurites of the CG innervate the velum, ventral, and dorsal parts of the larva at the late veliger stage. Scallop pediveligers possess 5-HT-lir CG, pleural ganglia, and immunopositive signals in the developing enteric nervous system. FMRFamide-lir is first detected in dorsal, ventral, and AO cells of early veligers. Later, FMRFamide-lir extends to the visceral nervous cord, all ganglia, as well as in the enteric nervous system in pediveligers. Catecholaminergic neurons are detected near the larval mouth, in the vellum, and in the stomach in veligers. Conclusions We described the distribution of neurotransmitters of the ganglia in adult scallops and the larval neurodevelopment in A. farreri. Immunostaining of neurotransmitters showed that the gross anatomy of adult scallop ganglia, in general, is similar to that in other bivalves, but complicated by the complexity of the structure of the ganglia and the appearance of additional ganglia not described in other molluscs. A comparison of larval neuromorphology suggests that 5-HT-lir structures are more conservative than FMRF-lir structures in Bivalvia. Notably, the latter are much more distributed in scallop A. farreri larvae than in other studied bivalves. Supplementary Information The online version contains supplementary material available at 10.1186/s12983-022-00468-7.
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Affiliation(s)
- Marina Kniazkina
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 690041, Russia
| | - Vyacheslav Dyachuk
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 690041, Russia.
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Kim CY, Park JS, Chung BS. Identification of cranial nerve ganglia using sectioned images and three-dimensional models of a cadaver. Korean J Pain 2022; 35:250-260. [PMID: 35768980 PMCID: PMC9251397 DOI: 10.3344/kjp.2022.35.3.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 04/02/2022] [Accepted: 04/06/2022] [Indexed: 11/17/2022] Open
Abstract
Background Cranial nerve ganglia, which are prone to viral infections and tumors, are located deep in the head, so their detailed anatomy is difficult to understand using conventional cadaver dissection. For locating the small ganglia in medical images, their sectional anatomy should be learned by medical students and doctors. The purpose of this study is to elucidate cranial ganglia anatomy using sectioned images and three-dimensional (3D) models of a cadaver. Methods One thousand two hundred and forty-six sectioned images of a male cadaver were examined to identify the cranial nerve ganglia. Using the real color sectioned images, real color volume model having a voxel size of 0.4 × 0.4 × 0.4 mm was produced. Results The sectioned images and 3D models can be downloaded for free from a webpage, anatomy.dongguk.ac.kr/ganglia. On the images and model, all the cranial nerve ganglia and their whole course were identified. In case of the facial nerve, the geniculate, pterygopalatine, and submandibular ganglia were clearly identified. In case of the glossopharyngeal nerve, the superior, inferior, and otic ganglia were found. Thanks to the high resolution and real color of the sectioned images and volume models, detailed observation of the ganglia was possible. Since the volume models can be cut both in orthogonal planes and oblique planes, advanced sectional anatomy of the ganglia can be explained concretely. Conclusions The sectioned images and 3D models will be helpful resources for understanding cranial nerve ganglia anatomy, for performing related surgical procedures.
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Affiliation(s)
- Chung Yoh Kim
- Department of Anatomy, Dongguk University School of Medicine, Gyeongju, Korea
| | - Jin Seo Park
- Department of Anatomy, Dongguk University School of Medicine, Gyeongju, Korea
| | - Beom Sun Chung
- Department of Anatomy, Yonsei University Wonju College of Medicine, Wonju, Korea
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Zhu J, Luo G, He Q, Yao M. Evaluation of the efficacy of unipolar and bipolar spinal dorsal root ganglion radiofrequency thermocoagulation in the treatment of postherpetic neuralgia. Korean J Pain 2022; 35:114-123. [PMID: 34966018 PMCID: PMC8728553 DOI: 10.3344/kjp.2022.35.1.114] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/28/2021] [Accepted: 11/12/2021] [Indexed: 11/14/2022] Open
Abstract
Background Different views have been proposed on the radiofrequency treatment modes and parameters of radiofrequency thermocoagulation of the spinal dorsal root ganglion for the treatment of postherpetic neuralgia (PHN). It is urgent to identify a more effective therapy for patients with PHN. Methods Patients who underwent radiofrequency thermocoagulation therapy for PHN were retrospectively reviewed and were divided into a radiofrequency thermocoagulation (CRF) and double neddles radiofrequency thermocoagulation (DCRF). The pain scores (numerical rating scale, NRS) were evaluated at the following time points before the operation, 1 day, 3 months, 6 months, 1 year, and 2 years after operation. The incidence of complications and the degree of pain relief were evaluated. The in vitro ovalbumin experiment was used to indicate the effects of radiofrequency thermocoagulation. Results Compared with the preoperative NRS scores, the postoperative NRS scores decreased significantly; the NRS scores of the DCRF group was lower than that of the CRF group at all time points from 6 months to 2 years following the operation. The total effective rate of the DCRF group was significantly higher than that of the CRF group at 2 years following the operation. The incidence of numbness in the DCRF group was higher than that noted in the CRF group. The ovalbumin experiments in vitro indicated that the effects of radiofrequency thermocoagulation were optimal when the distance between the two needles was 5 mm. Conclusions DCRF with a 5 mm spacing exhibits a longer duration and higher effective rate in the treatment of PHN and is worth promoting.
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Affiliation(s)
- Jianjun Zhu
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Ge Luo
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Qiuli He
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Ming Yao
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing or The Affiliated Hospital of Jiaxing University, Jiaxing, China
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Sencan S, Yolcu G, Bilim S, Kenis-Coskun O, Gunduz OH. Comparison of treatment outcomes in chronic coccygodynia patients treated with ganglion impar blockade versus caudal epidural steroid injection: a prospective randomized comparison study. Korean J Pain 2022; 35:106-113. [PMID: 34966017 PMCID: PMC8728552 DOI: 10.3344/kjp.2022.35.1.106] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/05/2021] [Accepted: 10/06/2021] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Coccygodynia is one of the chronic, refractory painful musculoskeletal disorders. Interventional procedures are applied to patients unresponsive to initial treatment in coccygodynia. This study aims to compare the treatment outcomes of ganglion impar block (GIB) and caudal epidural steroid injection (CESI) in patients with chronic coccygodynia. METHODS This study was a prospective randomized comparison study conducted between June 2019 and January 2021. Patients diagnosed with chronic coccygodynia were randomly divided into two groups: the GIB group and the CESI group. The severity of pain, presence of neuropathic pain, and quality of life were evaluated using the Numeric Rating Scale, Leeds Assessment of the Neuropathic Symptoms and Signs Scale, and Short Form-12 Health Survey (SF-12), respectively. RESULTS A total of 34 patients in each group were included in the final analyses. While there was a significant decrease in pain intensity in both groups in the 3-month follow-up, this decrease was more significant in the GIB group at the 3rd week. There was a significant improvement in the SF-12 physical score and the number of patients with neuropathic pain in both groups in the 3rd week, but this improvement was not observed in the 3rd month. CONCLUSIONS Although GIB may provide more pain relief in short term, both GIB and CESI are useful treatment methods in coccygodynia unresponsive to more conservative treatments.
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Affiliation(s)
- Savas Sencan
- Division of Pain Medicine, Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Gunay Yolcu
- Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Serhad Bilim
- Pain Clinic, Adıyaman Education and Research Hospital, Adıyaman, Turkey
| | - Ozge Kenis-Coskun
- Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Osman Hakan Gunduz
- Division of Pain Medicine, Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Marmara University, Istanbul, Turkey
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Kim BS, Park SY, Kim DH, Kim NI, Yoon JH, Ju JK, Park CH, Kim HS, Choi SK. Cytomegalovirus colitis induced segmental colonic hypoganglionosis in an immunocompetent patient: A case report. World J Clin Cases 2021; 9:5631-5636. [PMID: 34307618 PMCID: PMC8281438 DOI: 10.12998/wjcc.v9.i20.5631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 05/02/2021] [Accepted: 06/01/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Cytomegalovirus (CMV) colitis is usually seen in immunocompromised patients with risk factors such as human immunodeficiency virus infection, solid organ transplant, inflammatory bowel disease, or malignancy. Therefore, many clinicians usually do not consider the possibility of CMV colitis in immunocompetent patients. We reported a rare case of segmental colonic hypoganglionosis associated with CMV colitis in an immunocompetent patient.
CASE SUMMARY A 48-year-old woman with no underlying disease was admitted to our hospital for severe abdominal pain and constipation. Computed tomography of the abdomen showed diffuse dilatation of the small intestine and the entire colon. Initial sigmoidoscopic findings and result of polymerase chain reaction (PCR) for CMV revealed the compatible findings of CMV colitis, the patient was treated with intravenous ganciclovir. After treatment, sigmoidoscopic findings and CMV PCR results improved. However the patient continued to suffered from constipation. Eight months after the initial admission, patient visited the emergency department with severe abdominal pain and imaging revealed aggravation of fecal impaction and bowel dilatation. We performed subtotal colectomy to control patient’s symptom. Histological examination of the resected specimen showed significantly reduced number of mature ganglion cells in the sigmoid colon compared to that in the proximal colon.
CONCLUSION Our case demonstrates that CMV colitis can develop even in patients with no other underlying disease, and that CMV colitis can be one of the causes for developing colonic hypoganglionosis.
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Affiliation(s)
- Ban Seok Kim
- Department of Gastroenterology, Chonnam National University Hospital, Gwangju 501-757, South Korea
| | - Seon-Young Park
- Department of Gastroenterology, Chonnam National University Hospital, Gwangju 501-757, South Korea
| | - Dong Hyun Kim
- Department of Gastroenterology, Chonnam National University Hospital, Gwangju 501-757, South Korea
| | - Nah Ihm Kim
- Department of Pathology, Chonnam National University Hospital, Gwangju 501-757, South Korea
| | - Jae Hyun Yoon
- Department of Gastroenterology, Chonnam National University Hospital, Gwangju 501-757, South Korea
| | - Jae Kyun Ju
- Department of Surgery, Chonnam University Hospital, Gwangju 501-757, South Korea
| | - Chang Hwan Park
- Department of Gastroenterology, Chonnam National University Hospital, Gwangju 501-757, South Korea
| | - Hyun Soo Kim
- Department of Gastroenterology, Chonnam National University Hospital, Gwangju 501-757, South Korea
| | - Sung Kyu Choi
- Department of Gastroenterology, Chonnam National University Hospital, Gwangju 501-757, South Korea
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Joo Y, Kim EK, Song HG, Jung H, Park H, Moon JY. Effectiveness of virtual reality immersion on procedure-related pain and anxiety in outpatient pain clinic: an exploratory randomized controlled trial. Korean J Pain 2021; 34:304-314. [PMID: 34193636 PMCID: PMC8255151 DOI: 10.3344/kjp.2021.34.3.304] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 12/15/2022] Open
Abstract
Background The study investigated virtual reality (VR) immersion in alleviating procedure-related pain in patients with chronic pain undergoing fluoroscopy-guided minimally-invasive intervention in a prone position at an outpatient clinic. Methods In this prospective randomized controlled study, 38 patients undergoing lumbar sympathetic ganglion block were randomized into either the VR or the control group. In the VR group, procedure-related pain was controlled via infiltration of local anesthetics while watching a 30-minute VR hypnotic program. In the control group, the skin infiltration alone was used, with the VR device switched off. The primary endpoint was an 11-point score on the numerical rating scale, indicating procedure-related pain. Patients’ satisfaction with pain control, anxiety levels, the need for additional local anesthetics during the procedure, hemodynamic stability, and any adverse events were assessed. Results Procedure-related pain was significantly lower in the VR group (3.7 ± 1.4) than in the control group (5.5 ± 1.7; P = 0.002). Post-procedural anxiety was lower in the VR group than in the control group (P = 0.025), with a significant reduction from pre-procedural anxiety (P < 0.001). Although patients’ satisfaction did not differ significantly (P = 0.158) between the groups, a higher number of patients required additional local anesthetics in the control group (n = 13) than in the VR group (n = 4; P = 0.001). No severe adverse events occurred in either group during the study. Conclusions VR immersion can be safely used as a novel adjunct to reduce procedural pain and anxiety during fluoroscopic pain intervention.
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Affiliation(s)
- Young Joo
- Department of Anesthesiology and Pain Medicine, CHA Ilsan Medical Center, CHA University School of Medicine, Goyang, Korea
| | - Eun-Kyung Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Korea
| | - Hyun-Gul Song
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Korea
| | - Haesun Jung
- Department of Anesthesiology and Pain Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - Hanssl Park
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Korea
| | - Jee Youn Moon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Korea.,Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Korea
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15
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Schallert EK, Cano MC, Ditzler MG, Jadhav SP, Jose J, Kan JH. Percutaneous ultrasound-guided ganglion fenestration in children: initial results. Skeletal Radiol 2021; 50:1169-75. [PMID: 33156396 DOI: 10.1007/s00256-020-03662-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 10/17/2020] [Accepted: 10/27/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To evaluate our pediatric experience with percutaneous ultrasound-guided fenestration of ganglia (PUGG). MATERIALS AND METHODS Retrospective study of pediatric patients who underwent PUGG from June 2016 to October 2018 at a free-standing tertiary referral academic children's hospital with a minimum of 6 months follow-up. Electronic medical records, picture archiving system, and post-procedural calls were utilized for patient demographics, lesion characteristics, procedure details, and recurrence. The procedure itself consisted of assessment by Child Life, application of topical anesthetic cream, sterile preparation and draping, and intra-procedural ultrasound guidance for local anesthetic instillation, ganglion aspiration, fenestration, and intra-remnant steroid instillation. Post-procedure care included an ice pack, compression dressing for 48 h, and 4 weeks of brace wear and activity restriction. RESULTS Forty-five patients met the inclusion criteria, ages 3-18 years, mean 13.5 years, and female to male ratio of 2:1. Ganglion locations consisted of 80% (36/45) in the wrist and 20% (9/45) in other locations (elbow, ankle, and foot). Ninety-eight percent (44/45) of procedures were performed non-sedated, including 20% (9/44) between ages 7 and 11 years. 28.9% (13/45) of ganglia recurred, the earliest at 3 weeks, the latest at 10 months, and an average of 3 months' time. No complication occurred and no patients required post-procedural narcotics or Emergency Department visitation for pain control. CONCLUSION Percutaneous ultrasound-guided fenestration of ganglia (PUGG) is a safe, minimally invasive alternative to surgical excision in the pediatric population, which can be performed without sedation and does not leave a scar.
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Osman MM, Iravani A, Hofman MS, Hicks RJ. Intra-patient comparison of physiologic 68Ga-PSMA-11 and 18F-DCFPyL PET/CT uptake in ganglia in prostate cancer patients: a pictorial essay. Cancer Imaging 2021; 21:35. [PMID: 33863390 PMCID: PMC8052677 DOI: 10.1186/s40644-021-00404-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 03/29/2021] [Indexed: 11/29/2022] Open
Abstract
Background Recent studies reported metabolic uptake in at least one of the evaluated ganglia in 98.5% of patients undergoing 68Ga -PSMA-11 and in 96.9% of patients undergoing 18F-DCFPyL PET/CT examination. We have observed different patterns of ganglion visualization with 18F-DCFPyL compared to 68Ga-PSMA-11. This includes more frequent visualization of cervical and sacral ganglia, which may be attributable to better imaging characteristics with 18F PET imaging. Case presentation This pictorial essay is to illustrate and compare, in the same patient, various representative cases of 68Ga-PSMA-11 and 18F-DCFPyL PET/CT uptake in ganglia at different anatomic locations, with different patterns and distribution of metabolic activity. Conclusion Reading physicians should be aware of the frequently encountered and occasionally different physiologic uptake of 68Ga-PSMA-11 and 18F DCFPyL in different ganglia.
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Affiliation(s)
- Medhat M Osman
- Division of Nuclear Medicine, Department of Radiology, Saint Louis University Hospital, St. Louis, MO, USA.
| | - Amir Iravani
- Mallinckrodt Institute of Radiology, Washington University, St. Louis, MO, USA.,Centre for Molecular Imaging, Department of Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Michael S Hofman
- Centre for Molecular Imaging, Department of Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Rodney J Hicks
- Centre for Molecular Imaging, Department of Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
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Abstract
Fibroblast growth factors (FGFs) act as key signalling molecules in brain development, maintenance, and repair. They influence the intricate relationship between myelinating cells and axons as well as the association of astrocytic and microglial processes with neuronal perikarya and synapses. Advances in molecular genetics and imaging techniques have allowed novel insights into FGF signalling in recent years. Conditional mouse mutants have revealed the functional significance of neuronal and glial FGF receptors, not only in tissue protection, axon regeneration, and glial proliferation but also in instant behavioural changes. This review provides a summary of recent findings regarding the role of FGFs and their receptors in the nervous system and in the pathogenesis of major neurological and psychiatric disorders.
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Affiliation(s)
- Lars Klimaschewski
- Department of Anatomy, Histology and Embryology, Institute of Neuroanatomy, Medical University of Innsbruck, Innsbruck, Austria.
| | - Peter Claus
- Institute of Neuroanatomy and Cell Biology, Hannover Medical School, Hannover, Germany
- Center for Systems Neuroscience, Hannover, Germany
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Kim JY, Abdi S, Huh B, Kim KH. Mirogabalin: could it be the next generation gabapentin or pregabalin? Korean J Pain 2021; 34:4-18. [PMID: 33380563 PMCID: PMC7783847 DOI: 10.3344/kjp.2021.34.1.4] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/15/2020] [Accepted: 12/22/2020] [Indexed: 12/12/2022] Open
Abstract
Except for carbamazepine for trigeminal neuralgia, gabapentinoid anticonvulsants have been the standard for the treatment of neuropathic pain. Pregabalin, which followed gabapentin, was developed with the benefit of rapid peak blood concentration and better bioavailability. Mirogabalin besylate (DS-5565, Tarlige®) shows greater sustained analgesia due to a high affinity to, and slow dissociation from, the α2δ-1 subunits in the dorsal root ganglion (DRG). Additionally, it produces a lower level of central nervous system-specific adverse drug reactions (ADRs), due to a low affinity to, and rapid dissociation from, the α2δ-2 subunits in the cerebellum. Maximum plasma concentration is achieved in less than 1 hour, compared to 1 hour for pregabalin and 3 hours for gabapentin. The plasma protein binding is relatively low, at less than 25%. As with all gabapentinoids, it is also largely excreted via the kidneys in an unchanged form, and so the administration dose should also be adjusted according to renal function. The equianalgesic daily dose for 30 mg of mirogabalin is 600 mg of pregabalin and over 1,200 mg of gabapentin. The initial adult dose starts at 5 mg, given orally twice a day, and is gradually increased by 5 mg at an interval of at least a week, to 15 mg. In conclusion, mirogabalin is anticipated to be a novel, safe gabapentinoid anticonvulsant with a greater therapeutic effect for neuropathic pain in the DRG and lower ADRs in the cerebellum.
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Affiliation(s)
- Jae-Yeon Kim
- Department of Anesthesia and Pain Medicine, Pusan National University School of Medicine, Yangsan, Korea
| | - Salahadin Abdi
- Department of Pain Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Billy Huh
- Department of Pain Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Kyung-Hoon Kim
- Department of Anesthesia and Pain Medicine, Pusan National University School of Medicine, Yangsan, Korea
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Midrio P, Trovalusci E, Zanatta C, Cataldo I. Should the search for ganglia in the distal rectal fistula in patients with anorectal malformation be abandoned? J Pediatr Surg 2020; 55:2166-2169. [PMID: 32345500 DOI: 10.1016/j.jpedsurg.2020.03.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 03/10/2020] [Accepted: 03/12/2020] [Indexed: 10/24/2022]
Abstract
PURPOSE Occurrence of Hirschsprung's disease in anorectal malformation (ARM) patients is rare, but many surgeons still ask to pathologists to search for ganglia in the terminal rectum/fistula; the histological procedure is time and money consuming and the results confounding. A consecutive series of ARM patients, in which the presence of ganglia in terminal rectum was revised, is herein presented. MATERIALS AND METHODS Rectal specimens of ARM patients who underwent corrective surgery in the last 6 years were retrieved. The histological protocol included H&E staining and calretinin immunohistochemistry. Each specimen is processed until all material is examined if no ganglia are retrieved after the first twelve sections. RESULTS Forty cases were examined. Eight patients were younger than 1 month of age at operation. The mean length of the specimen was 1.5cm (range: 1-3 cm). Upon clinical request, ganglia were searched in 15/40 cases (37.5%) and resulted absent in 10/15 (66.5%). All patients have been followed and none developed signs or symptoms suggestive for Hirschsprung. CONCLUSIONS The practice to search for ganglia in the terminal rectum/fistula in ARM patients should be abandoned, as incidence of associated colorectal diseases is rare. Moreover, the procedure is expensive both in terms of laboratory's reagents and working time of expert pathologists and technicians. LEVEL OF EVIDENCE Level IV (Case Series with no Comparison Group).
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Affiliation(s)
- Paola Midrio
- Pediatric Surgery, Ca' Foncello Hospital, Treviso, Italy.
| | | | - Cinzia Zanatta
- Pediatric Surgery, Ca' Foncello Hospital, Treviso, Italy
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20
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Wang L, Shen J, Das S, Yang H. Diffusion tensor imaging of the C1-C3 dorsal root ganglia and greater occipital nerve for cervicogenic headache. Korean J Pain 2020; 33:275-283. [PMID: 32606272 PMCID: PMC7336345 DOI: 10.3344/kjp.2020.33.3.275] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/16/2020] [Accepted: 05/22/2020] [Indexed: 12/13/2022] Open
Abstract
Background Previous studies showed neurography and tractography of the greater occipital nerve (GON). The purpose of this study was determining diffusion tensor imaging (DTI) parameters of bilateral GONs and dorsal root ganglia (DRG) in unilateral cervicogenic headache as well as the grading value of DTI for severe headache. The correlation between DTI parameters and clinical characteristics was evaluated. Methods The fractional anisotropy (FA) and apparent diffusion coefficient (ADC) values in bilateral GONs and cervical DRG (C2 and C3) were measured. Grading values for headache severity was calculated using a receiver operating characteristics curve. The correlation was analyzed with Pearson’s coefficient. Results The FA values of the symptomatic side of GON and cervical DRG (C2 and C3) were significantly lower than that of the asymptomatic side (all the P < 0.001), while the ADC values were significantly higher (P = 0.003, P < 0.001, and P = 0.003, respectively). The FA value of 0.205 in C2 DRG was considered the grading parameter for headache severity with sensitivity of 0.743 and specificity of 0.999 (P < 0.001). A negative correlation and a positive correlation between the FA and ADC value of the GON and headache index (HI; r = –0.420, P = 0.037 and r = 0.531, P = 0.006, respectively) was found. Conclusions DTI parameters in the symptomatic side of the C2 and C3 DRG and GON were significantly changed. The FA value of the C2 DRG can grade headache severity. DTI parameters of the GON significantly correlated with HI.
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Affiliation(s)
- Lang Wang
- Department of Radiology, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
| | - Jiang Shen
- Department of Radiology, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
| | - Sushant Das
- North Sichuan Medical College, Nanchong, China
| | - Hanfeng Yang
- Department of Pain, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
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Li J, Wang L, Li L, Qiao J, Zheng Z. Preliminary study of perineural invasion in patients with hilar cholangiocarcinoma by computed tomography imaging. Clin Imaging 2020; 61:49-53. [PMID: 31954352 DOI: 10.1016/j.clinimag.2019.12.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 11/26/2019] [Accepted: 12/31/2019] [Indexed: 12/13/2022]
Abstract
OBJECTIVES To explore the characteristics of hepatic plexuses and celiac ganglia, and their relationships with hilar cholangiocarcinoma (HCCA) perineural invasion (PNI) by computed tomography (CT) imaging preliminarily. MATERIALS AND METHODS Sixty-five HCCA patients (55 with PNI) between December 2014 and February 2019 were included in this retrospective study. The CT values of hepatic plexuses in Region 1 (the fat tissue around proper hepatic artery), in Region 2 (the fat tissue around common hepatic artery), and in Region 3 (the fat tissue around celiac trunk), and the CT values and diameters of celiac ganglia were measured on the preoperative CT images. Mann-Whitney U test was used to compare the measurements between PNI group and Non-PNI group. ROC curve was performed to analyze the sensitivity, specificity and optimal threshold of the measurements in discriminating HCCA PNI. RESULTS The CT values of hepatic plexuses in PNI group were significantly higher than those in Non-PNI group (all P < 0.05). The CT values of right celiac ganglia were significantly higher in PNI group than those in Non-PNI group (P = 0.007). There were no significant differences between two groups in other measurements (all P > 0.05). The CT values of hepatic plexuses in Region 1 showed the highest sensitivity (90.9%) and the CT values of right celiac ganglia demonstrated the highest specificity (80.0%). CONCLUSIONS The increases of CT values of hepatic plexuses around proper hepatic artery may be used as an indicator of PNI in patients with HCCA and may facilitate treatment planning in considering its early recurrence after surgery and poor prognosis.
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Affiliation(s)
- Jie Li
- Department of Radiology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, 168 Li Tang Road, Changping District, 102218 Beijing, China
| | - Lixue Wang
- Department of Radiology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, 168 Li Tang Road, Changping District, 102218 Beijing, China
| | - Li Li
- Department of Pathology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, 168 Li Tang Road, Changping District, 102218 Beijing, China
| | - Jian Qiao
- Department of Radiology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, 168 Li Tang Road, Changping District, 102218 Beijing, China
| | - Zhuozhao Zheng
- Department of Radiology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, 168 Li Tang Road, Changping District, 102218 Beijing, China.
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Yoo SH, Lee SH, Lee S, Park JH, Lee S, Jin H, Park HJ. The effect of human mesenchymal stem cell injection on pain behavior in chronic post-ischemia pain mice. Korean J Pain 2020; 33:23-29. [PMID: 31888314 PMCID: PMC6944374 DOI: 10.3344/kjp.2020.33.1.23] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 10/29/2019] [Accepted: 11/01/2019] [Indexed: 12/30/2022] Open
Abstract
Background Neuropathic pain (NP) is considered a clinically incurable condition despite various treatment options due to its diverse causes and complicated disease mechanisms. Since the early 2000s, multipotent human mesenchymal stem cells (hMSCs) have been used in the treatment of NP in animal models. However, the effects of hMSC injections have not been studied in chronic post-ischemia pain (CPIP) mice models. Here, we investigated whether intrathecal (IT) and intrapaw (IP) injections of hMSCs can reduce mechanical allodynia in CPIP model mice. Methods Seventeen CPIP C57/BL6 mice were selected and randomized into four groups: IT sham (n = 4), IT stem (n = 5), IP sham (n = 4), and IP stem (n = 4). Mice in the IT sham and IT stem groups received an injection of 5 μL saline and 2 × 104 hMSCs, respectively, while mice in the IP sham and IP stem groups received an injection of 5 μL saline and 2 × 105 hMSCs, respectively. Mechanical allodynia was assessed using von Frey filaments from pre-injection to 30 days post-injection. Glial fibrillary acidic protein (GFAP) expression in the spinal cord and dorsal root ganglia were also evaluated. Results IT and IP injections of hMSCs improved mechanical allodynia. GFAP expression was decreased on day 25 post-injection compared with the sham group. Injections of hMSCs improved allodynia and GFAP expression was decreased compared with the sham group. Conclusions These results suggested that hMSCs may be also another treatment modality in NP model by ischemia-reperfusion.
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Affiliation(s)
- Sie Hyeon Yoo
- Department of Anesthesiology and Pain Medicine, Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Sung Hyun Lee
- Department of Anesthesiology and Pain Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seunghwan Lee
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jae Hong Park
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seunghyeon Lee
- Department of Anesthesiology and Pain Medicine, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Heecheol Jin
- Department of Anesthesiology and Pain Medicine, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Hue Jung Park
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Sharker MR, Sukhan ZP, Kim SC, Lee WK, Kho KH. Identification, characterization, and expression analysis of a serotonin receptor involved in the reproductive process of the Pacific abalone, Haliotis discus hannai. Mol Biol Rep 2020; 47:555-67. [PMID: 31696430 DOI: 10.1007/s11033-019-05162-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 10/23/2019] [Indexed: 10/25/2022]
Abstract
Serotonin receptor (5-HT) is a biogenic amine acting as a neurotransmitter and neuromodulator that mediates various aspects of reproduction and gametogenesis. The full-length nucleotide sequence of Haliotis discus hannai encodes a protein of 417 amino acids with a predicted molecular mass of 46.54 kDa and isoelectric point of 8.94. The structural profile of 5-HTHdh displayed key features of G protein-coupled receptors, including seven hydrophobic transmembrane domains, putative N-linked glycosylation sites, and several phosphorylation consensus motifs. It shares the highest homology of its amino acid sequence with the 5-HT receptor from Haliotis asinina, and to lesser extent of human 5-HT receptor. The cloned sequence possesses two cysteine residues (Cys-115 and Cys-193), which are likely to form a disulfide bond. Phylogenetic comparison with other known 5-HT receptor genes revealed that the 5-HTHdh is most closely related to the 5-HTHa receptor. The three-dimensional structure of the 5-HTHdh showed multiple alpha helices which is separated by a helix-loop-helix (HLH) structure. Quantitative PCR demonstrated that the receptor mRNA was predominantly expressed in the pleuropedal ganglion. Significant differences in the transcriptional activity of the 5-HTHdh gene were observed in the ovary at the ripening stage. An exclusive expression was detected in pleuropedal ganglion, testis, and ovary at higher effective accumulative temperature (1000 °C). In situ hybridization showed that the 5-HTHdh expressing neurosecretory cells were distributed in the cortex of the pleuropedal ganglion. Our results suggest that 5-HTHdh synthesized in the neural ganglia may be involved in oocyte maturation and spawning of H. discus hannai.
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Yurchenko OV, Savelieva AV, Kolotuchina NK, Voronezhskaya EE, Dyachuk VA. Peripheral sensory neurons govern development of the nervous system in bivalve larvae. EvoDevo 2019; 10:22. [PMID: 31528326 PMCID: PMC6743156 DOI: 10.1186/s13227-019-0133-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 08/21/2019] [Indexed: 12/15/2022] Open
Abstract
Recent findings regarding early lophotrochozoan development have altered the conventional model of neurogenesis and revealed that peripheral sensory elements play a key role in the initial organization of the larval nervous system. Here, we describe the main neurogenetic events in bivalve mollusks in comparison with other Lophotrochozoa, emphasizing a novel role for early neurons in establishing larval nervous systems and speculating about the morphogenetic function of the apical organ. We demonstrate that during bivalve development, peripheral sensory neurons utilizing various transmitters differentiate before the apical organ emerges. The first neurons and their neurites serve as a scaffold for the development of the nervous system. During veliger stage, cerebral, pleural, and visceral ganglia form along the lateral (visceral) nerve cords in anterior-to-posterior axis. The pedal ganglia and corresponding ventral (pedal) nerve cords develop much later, after larval settlement and metamorphosis. Pharmacological abolishment of the serotonin gradient within the larval body disrupts the navigation of "pioneer" axons resulting in malformation of the whole nervous system architecture. Comparative morphological data on neurogenetic events in bivalve mollusks shed new light on the origin of the nervous system, mechanisms of early axon navigation, and sequence of the tetraneurous nervous system formation. Furthermore, this information improves our understanding of the basic nervous system architecture in larval Bivalvia and Mollusca.
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Affiliation(s)
- Olga V. Yurchenko
- National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 690041 Russia
| | - Anna V. Savelieva
- National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 690041 Russia
| | - Natalia K. Kolotuchina
- National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 690041 Russia
| | - Elena E. Voronezhskaya
- N.K. Koltsov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, 119991 Russia
| | - Vyacheslav A. Dyachuk
- National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 690041 Russia
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Nanophotonics and Metamaterials, ITMO University, St. Petersburg, Russia
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25
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Dothel G, Bernardini C, Zannoni A, Spirito MR, Salaroli R, Bacci ML, Forni M, Ponti FD. Ex vivo effect of vascular wall stromal cells secretome on enteric ganglia. World J Gastroenterol 2019; 25:4892-4903. [PMID: 31543681 PMCID: PMC6737320 DOI: 10.3748/wjg.v25.i33.4892] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/31/2019] [Accepted: 06/08/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Mesenchymal stromal cell (MSC)-based therapy is currently under study to treat inflammatory bowel diseases. MSC bioactive products could represent a valid alternative to overcome issues associated with systemic whole-cell therapies. However, MSC anti-inflammatory mechanisms differ between rodents and humans, impairing the reliability of preclinical models.
AIM To evaluate the effect of conditioned medium (CM) derived from porcine vascular wall MSCs (pVW-MSCs) on survival and differentiation of porcine and guinea pig enteric ganglia exposed to lipopolysaccharide (LPS).
METHODS Primary cultures of enteric ganglia were obtained by mechanic and enzymatic digestion of ileum resections from guinea pigs (Cavia porcellus) (GPEG) and pigs (Suus scrofa) (PEG). pVW-MSCs were derived by enzymatic digestion from vascular wall resections of porcine aorta and tested by immunoflowcytometry for MSC immune profile. Enteric ganglia were treated with increasing concentrations of LPS, CM derived by pVW-MSCs or a combination of CM and LPS 1 µg/mL. Cell count and morphometric analysis of HuD positive neurons and glial fibrillary acidic protein positive glial cells were performed by immunofluorecent staining of cultured ganglia.
RESULTS PEG showed a higher number of neurons compared to GPEG. Overall, CM exerted a protective role on LPS-treated enteric ganglia. CM in combination with LPS increased the number of glial cells per ganglion in both cultures evoking glial cells differentiation in porcine cultures.
CONCLUSION These findings suggest an immunomodulating activity of pVW-MSCs mediators on the enteric nervous system in inflammatory conditions.
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Affiliation(s)
- Giovanni Dothel
- Department of Medical and Surgical Sciences, University of Bologna, Bologna 40126, Italy
| | - Chiara Bernardini
- Department of Veterinary Medical Sciences, University of Bologna, Bologna 40064, Italy
| | - Augusta Zannoni
- Department of Veterinary Medical Sciences, University of Bologna, Bologna 40064, Italy
| | - Maria Rosaria Spirito
- Department of Medical and Surgical Sciences, University of Bologna, Bologna 40126, Italy
| | - Roberta Salaroli
- Department of Veterinary Medical Sciences, University of Bologna, Bologna 40064, Italy
| | - Maria Laura Bacci
- Department of Veterinary Medical Sciences, University of Bologna, Bologna 40064, Italy
| | - Monica Forni
- Department of Veterinary Medical Sciences, University of Bologna, Bologna 40064, Italy
| | - Fabrizio De Ponti
- Department of Medical and Surgical Sciences, University of Bologna, Bologna 40126, Italy
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26
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Doo AR, Choi JW, Lee JH, Kim YS, Ki MJ, Han YJ, Son JS. The efficacy of selective nerve root block for the long-term outcome of postherpetic neuralgia. Korean J Pain 2019; 32:215-222. [PMID: 31257830 PMCID: PMC6615448 DOI: 10.3344/kjp.2019.32.3.215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 06/04/2019] [Accepted: 06/10/2019] [Indexed: 11/05/2022] Open
Abstract
Background Several nerve blocks can reduce the incidence of postherpetic neuralgia (PHN) as well as relieve acute zoster-related pain, but the long-term outcome of PHN has not been clearly determined. This study investigated the efficacy of selective nerve root block (SNRB) for herpes zoster (HZ) on the long-term outcome of PHN. Methods We prospectively conducted an interview of patients who had undergone an SNRB for HZ from January 2006 to December 2016 to evaluate their long-term PHN status. The relationship between the time from HZ onset to the first SNRB and the long-term outcome of PHN was investigated. Results The data of 67 patients were collected. The patients were allocated to acute (SNRB ≤ 14 days, n = 16) or subacute (SNRB > 14 days, n = 51) groups. The proportions of cured patients were 62.5% and 25.5% in the acute and subacute groups (P = 0.007), respectively. In logistic regression, an SNRB >14 days was the significant predictor of PHN (adjusted odd ratio, 3.89; 95% confidence interval, 1.02-14.93; P = 0.047). Kaplan-Meier analysis revealed that time from the SNRB to the cure of PHN was significantly shorter in the acute group (2.4 ± 0.7 yr) than in the subacute group (5.0 ± 0.4 yr; P = 0.003). Conclusions An early SNRB during the acute stage of HZ (within 14 days) appears to decrease the incidence and shorten the duration of PHN, with a median of 5.0 years of follow-up.
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Affiliation(s)
- A Ram Doo
- Department of Anesthesiology and Pain Medicine, Chonbuk National University Medical School, Jeonju, Korea.,Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
| | - Jin-Wook Choi
- Department of Anesthesiology and Pain Medicine, Chonbuk National University Medical School, Jeonju, Korea
| | - Ju-Hyung Lee
- Department of Preventive Medicine, Chonbuk National University Medical School, Jeonju, Korea
| | - Ye Sull Kim
- Department of Anesthesiology and Pain Medicine, Chonbuk National University Medical School, Jeonju, Korea
| | - Min-Jong Ki
- Department of Anesthesiology and Pain Medicine, Chonbuk National University Medical School, Jeonju, Korea
| | - Young Jin Han
- Department of Anesthesiology and Pain Medicine, Chonbuk National University Medical School, Jeonju, Korea.,Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
| | - Ji-Seon Son
- Department of Anesthesiology and Pain Medicine, Chonbuk National University Medical School, Jeonju, Korea.,Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
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Abstract
Lumbar foraminal pathology causing entrapment of neurovascular contents and radicular symptoms are commonly associated with foraminal stenosis. Foraminal neuropathy can also be derived from inflammation of the neighboring lateral recess or extraforaminal spaces. Conservative and interventional therapies have been used for the treatment of foraminal inflammation, fibrotic adhesion, and pain. This update reviews the anatomy, pathophysiology, clinical presentation, diagnosis, and current treatment options of foraminal neuropathy.
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Affiliation(s)
- Young Kook Choi
- New Jersey Pain Medicine for the Difficult and Failed Pain, Robert Wood Johnson University Hospital Rahway, Rahway, NJ, USA
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28
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Ptaszyńska-Sarosiek I, Dunaj J, Zajkowska A, Niemcunowicz-Janica A, Król M, Pancewicz S, Zajkowska J. Post-mortem detection of six human herpesviruses (HSV-1, HSV-2, VZV, EBV, CMV, HHV-6) in trigeminal and facial nerve ganglia by PCR. PeerJ 2019; 6:e6095. [PMID: 30643675 PMCID: PMC6330031 DOI: 10.7717/peerj.6095] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 11/10/2018] [Indexed: 12/14/2022] Open
Abstract
Background Among over 100 types of Herpesviridae viruses, eight can infect humans: herpes simplex viruses (HSV-1, HSV-2), varicella zoster virus (VZV), cytomegalovirus (CMV), Epstein-Barr virus (EBV), and human herpesviruses 6, 7, and 8 (HHV-6, HHV-7, HHV-8). After initial infection, the viruses remain latent for the lifetime of the host. The aim of this study was to determine the distribution of six different herpesviruses: HSV-1, HSV-2, VZV, EBV, CMV, and HHV-6 in trigeminal and facial nerve ganglia among a random group of Polish population. Methods The studied group consisted of 47 individuals (40 male, seven female); mean age of 47.4 ± 16.5 years) who died of independent causes (suicide, traffic accident, and poisoning, among others). Bilateral trigeminal and facial nerve ganglia of each cadaver were collected during the autopsy. Herpesviruses were detected using multiplex polymerase chain reaction technique. Results Herpesviruses were found in trigeminal and/or facial ganglia in 30/47 (63.8%) of cadavers. HHV-6 was the most prevalent of the herpesviruses and was found in nearly half of cadavers (n = 22; 46.8%), followed by HSV-1 (n = 7; 14.9%), VZV (n = 4; 8.5%), EBV (n = 4; 8.5%), HSV-2 (n = 2; 4.3%), and CMV (n = 1; 2.1%). Facial nerve ganglia (n = 23; 48.9%) were more often infected than trigeminal ganglia (n = 13; 27.7%). Discussion The results of this study have revealed a common presence of the herpesviruses in trigeminal and facial nerve ganglia among a random group of Polish population. Furthermore, the data also demonstrate simultaneous infection of the ganglia with different herpesviruses. This study has contributed to the knowledge of prevalence and localization of herpesviruses in different structures of the nervous system.
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Affiliation(s)
| | - Justyna Dunaj
- Department of Infectious Diseases and Neuroinfections, Medical University of Bialystok, Białystok, Poland
| | - Agata Zajkowska
- Department of Neurology, Medical University of Bialystok, Bialystok, Poland
| | | | - Monika Król
- Department of Infectious Diseases and Neuroinfections, Medical University of Bialystok, Białystok, Poland
| | - Sławomir Pancewicz
- Department of Infectious Diseases and Neuroinfections, Medical University of Bialystok, Białystok, Poland
| | - Joanna Zajkowska
- Department of Infectious Diseases and Neuroinfections, Medical University of Bialystok, Białystok, Poland
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29
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Beom J, Kim S, Suh HC, Kim DK, Kang SH, Lee SU, Lee SY. Association between sensory nerve action potential and lumbar dorsal root ganglion area. J Clin Neurosci 2018; 59:37-40. [PMID: 30446365 DOI: 10.1016/j.jocn.2018.11.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 11/05/2018] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To quantify the cross-sectional area (CSA) of lumbar dorsal root ganglion (DRG) by magnetic resonance imaging (MRI) and investigate the relationship between the cross-sectional area (CSA) of DRGs and sensory nerve action potentials (SNAP) amplitude in the lower extremities. METHODS Thirty-eight DRGs (20 L5 roots and 18 S1 roots) in 10 adult subjects were reviewed retrospectively. The CSA of the DRG was calculated from MR images of the coronal plane. SNAP amplitudes of the superficial peroneal nerve and sural nerve were corresponded to L5 and S1-DRGs. RESULTS The mean CSA of DRGs was 66.6 ± 13.7 mm2 in L5-DRG and 79.5 ± 14.3 mm2 in S1-DRG. The means of SNAP amplitudes were 19.6 ± 6.2 μV in superficial peroneal nerves and 24.6 ± 9.0 μV in sural nerves. In multivariate regression analysis, the CSA of DRGs had a significant correlation with SNAP amplitude. CONCLUSION The area of L5 and S1-DRGs may be positively correlated with SNAP amplitude.
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Affiliation(s)
- Jaewon Beom
- Department of Physical Medicine and Rehabilitation, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Sujin Kim
- Department of Radiology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Hoon Chang Suh
- Department of Physical Medicine and Rehabilitation, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Don-Kyu Kim
- Department of Physical Medicine and Rehabilitation, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Si Hyun Kang
- Department of Physical Medicine and Rehabilitation, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Shi-Uk Lee
- Department of Rehabilitation Medicine, Seoul National University College of Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea
| | - Sang Yoon Lee
- Department of Rehabilitation Medicine, Seoul National University College of Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea.
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30
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Abstract
Basal ganglia circuits are organized to selected desired actions and to inhibit potentially competing unwanted actions. This is accomplished through a complex circuitry that is modified through development and learning. Mechanisms of neural plasticity underlying these modifications are increasingly understood, but new mechanisms continue to be discovered. Dystonia, a movement disorder characterized by involuntary muscle contractions that cause abnormal postures and movements. Emerging evidence points to important links between mechanisms of plasticity and the manifestations of dystonia. Investigation of these mechanisms has improved understanding of the action of currently used medication and is informing the development of new treatments.
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31
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Abstract
In the enteric nervous system, neurons make contact with smooth muscle cells to regulate gastrointestinal functions. Since neuronal cell alterations and intestinal motor dysfunctions are strictly linked, in vitro models based on the culture of neurons or smooth muscle cells are of great advantage to elucidate the functions of the enteric nervous system under physiological and pathological conditions. In this chapter, we provide the protocol for isolation of neurons and smooth muscle cells from the myenteric plexus of adult mice. The isolated cells are suitable for immunocytochemical applications or electrophysiological investigations and/or co-culturing experiments.
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Affiliation(s)
- Paola Brun
- Department of Molecular Medicine, University of Padua, Padua, Italy.
| | - Hamid I Akbarali
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
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32
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Werner RA, Sheikhbahaei S, Jones KM, Javadi MS, Solnes LB, Ross AE, Allaf ME, Pienta KJ, Lapa C, Buck AK, Higuchi T, Pomper MG, Gorin MA, Rowe SP. Patterns of uptake of prostate-specific membrane antigen (PSMA)-targeted 18F-DCFPyL in peripheral ganglia. Ann Nucl Med 2017; 31:696-702. [PMID: 28831739 DOI: 10.1007/s12149-017-1201-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 08/07/2017] [Indexed: 11/05/2022]
Abstract
Objective Radiotracers targeting prostate-specific membrane antigen (PSMA) have increasingly been recognized as showing uptake in a number of normal structures, anatomic variants, and non-prostate-cancer pathologies. We aimed to explore the frequency and degree of uptake in peripheral ganglia in patients undergoing PET with the PSMA-targeted agent 18F-DCFPyL. Methods A total of 98 patients who underwent 18F-DCFPyL PET/CT imaging were retrospectively analyzed. This included 76 men with prostate cancer (PCa) and 22 patients with renal cell carcinoma (RCC; 13 men, 9 women). Scans were evaluated for uptake in the cervical, stellate, celiac, lumbar and sacral ganglia. Maximum standardized uptake value corrected to body weight (SUVmax), and maximum standardized uptake value corrected to lean body mass (SULmax) were recorded for all ganglia with visible uptake above background. Ganglia-to-background ratios were calculated by dividing the SUVmax and SULmax values by the mean uptake in the ascending aorta (Aortamean) and the right gluteus muscle (Gluteusmean). Results Overall, 95 of 98 (96.9%) patients demonstrated uptake in at least one of the evaluated peripheral ganglia. With regard to the PCa cohort, the most frequent sites of radiotracer accumulation were lumbar ganglia (55/76, 72.4%), followed by the cervical ganglia (51/76, 67.1%). Bilateral uptake was found in the majority of cases [lumbar 44/55 (80%) and cervical 30/51 (58.8%)]. Additionally, discernible radiotracer uptake was recorded in 50/76 (65.8%) of the analyzed stellate ganglia and in 45/76 (59.2%) of the celiac ganglia, whereas only 5/76 (6.6%) of the sacral ganglia demonstrated 18F-DCFPyL accumulation. Similar findings were observed for patients with RCC, with the most frequent locations of radiotracer uptake in both the lumbar (20/22, 90.9%) and cervical ganglia (19/22, 86.4%). No laterality preference was found in mean PSMA-ligand uptake for either the PCa or RCC cohorts. Conclusion As PSMA-targeted agents become more widely disseminated, the patterns of uptake in structures that are not directly relevant to patients’ cancers must be understood. This is the first systematic evaluation of the uptake of 18F-DCFPyL in ganglia demonstrating a general trend with a descending frequency of radiotracer accumulation in lumbar, cervical, stellate, celiac, and sacral ganglia. The underlying biology that leads to variability of PSMA-targeted radiotracers in peripheral ganglia is not currently understood, but may provide opportunities for future research.
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Abstract
Enhanced expression and function of gap junctions and pannexin (Panx) channels have been associated with both peripheral and central mechanisms of pain sensitization. At the level of the sensory ganglia, evidence includes augmented gap junction and pannexin1 expression in glial cells and neurons in inflammatory and neuropathic pain models and increased synchrony and enhanced cross-excitation among sensory neurons by gap junction-mediated coupling. In spinal cord and in suprapinal areas, evidence is largely limited to increased expression of relevant proteins, although in several rodent pain models, hypersensitivity is reduced by treatment with gap junction/Panx1 channel blocking compounds. Moreover, targeted modulation of Cx43 expression was shown to modulate pain thresholds, albeit in somewhat contradictory ways, and mice lacking Panx1 expression globally or in specific cell types show depressed hyperalgesia. We here review the evidence for involvement of gap junctions and Panx channels in a variety of animal pain studies and then discuss ways in which gap junctions and Panx channels may mediate their action in pain processing. This discussion focusses on spread of signals among satellite glial cells, in particular intercellular Ca2+ waves, which are propagated through both gap junction and Panx1-dependent routes and have been associated with the phenomenon of spreading depression and the malady of migraine headache with aura.
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34
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Martin C, Gross V, Pflüger HJ, Stevenson PA, Mayer G. Assessing segmental versus non-segmental features in the ventral nervous system of onychophorans (velvet worms). BMC Evol Biol 2017; 17:3. [PMID: 28049417 PMCID: PMC5209844 DOI: 10.1186/s12862-016-0853-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 12/15/2016] [Indexed: 11/12/2022] Open
Abstract
Background Due to their phylogenetic position as one of the closest arthropod relatives, studies of the organisation of the nervous system in onychophorans play a key role for understanding the evolution of body segmentation in arthropods. Previous studies revealed that, in contrast to the arthropods, segmentally repeated ganglia are not present within the onychophoran ventral nerve cords, suggesting that segmentation is either reduced or might be incomplete in the onychophoran ventral nervous system. Results To assess segmental versus non-segmental features in the ventral nervous system of onychophorans, we screened the nerve cords for various markers, including synapsin, serotonin, gamma-aminobutyric acid, RFamide, dopamine, tyramine and octopamine. In addition, we performed retrograde fills of serially repeated commissures and leg nerves to localise the position of neuronal somata supplying those. Our data revealed a mixture of segmental and non-segmental elements within the onychophoran nervous system. Conclusions We suggest that the segmental ganglia of arthropods evolved by a gradual condensation of subsets of neurons either in the arthropod or the arthropod-tardigrade lineage. These findings are in line with the hypothesis of gradual evolution of segmentation in panarthropods and thus contradict a loss of ancestral segmentation within the onychophoran lineage. Electronic supplementary material The online version of this article (doi:10.1186/s12862-016-0853-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Christine Martin
- Department of Zoology, University of Kassel, Heinrich-Plett-Str. 40, D-34132, Kassel, Germany.
| | - Vladimir Gross
- Department of Zoology, University of Kassel, Heinrich-Plett-Str. 40, D-34132, Kassel, Germany
| | - Hans-Joachim Pflüger
- Institute of Biology, Neurobiology, Free University of Berlin, Königin-Luise-Str. 28-30, D-14195, Berlin, Germany
| | - Paul A Stevenson
- Physiology of Animals and Behaviour, Institute of Biology, University of Leipzig, Talstraße 33, D-04103, Leipzig, Germany
| | - Georg Mayer
- Department of Zoology, University of Kassel, Heinrich-Plett-Str. 40, D-34132, Kassel, Germany
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Lee JY, Lee JH, Song JS, Song MJ, Hwang SJ, Yoon RG, Jang SW, Park JE, Heo YJ, Choi YJ, Baek JH. Superior Cervical Sympathetic Ganglion: Normal Imaging Appearance on 3T-MRI. Korean J Radiol 2016; 17:657-63. [PMID: 27587954 PMCID: PMC5007392 DOI: 10.3348/kjr.2016.17.5.657] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 06/10/2016] [Indexed: 11/25/2022] Open
Abstract
Objective To identify superior cervical sympathetic ganglion (SCSG) and describe their characteristic MR appearance using 3T-MRI. Materials and Methods In this prospective study, we recruited 53 consecutive patients without history of head and neck irradiation. Using anatomic location based on literature review, both sides of the neck were evaluated to identify SCSGs in consensus. SCSGs were divided into definite (medial to internal carotid artery [ICA] and lateral to longus capitis muscle [LCM]) and probable SCSGs based on relative location to ICA and LCM. Two readers evaluated signal characteristics including intraganglionic hypointensity of all SCSGs and relative location of probable SCSGs. Interrater and intrarater agreements were quantified using unweighted kappa. Results Ninety-one neck sites in 53 patients were evaluated after exclusion of 15 neck sites with pathology. Definite SCSGs were identified at 66 (73%) sites, and probable SCSGs were found in 25 (27%). Probable SCSGs were located anterior to LCM in 16 (18%), lateral to ICA in 6 (7%), and posterior to ICA in 3 (3%). Intraganglionic hypointensity was identified in 82 (90%) on contrast-enhanced fat-suppressed T1-weighted images. There was no statistical difference in the relative location between definite and probable SCSGs of the right and left sides with intragnalionic hypointensity on difference pulse sequences. Interrater and intrarater agreements on the location and intraganglionic hypointensity were excellent (κ-value, 0.749–1.000). Conclusion 3T-MRI identified definite SCSGs at 73% of neck sites and varied location of the remaining SCSGs. Intraganglionic hypointensity was a characteristic feature of SCSGs.
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Affiliation(s)
- Joo Yeon Lee
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
| | - Jeong Hyun Lee
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
| | - Joon Seon Song
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
| | - Min Jeong Song
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
| | - Seung-Jun Hwang
- Department of Anatomy and Cell Biology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
| | - Ra Gyoung Yoon
- Department of Radiology, Catholic Kwandong University International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Incheon 22711, Korea
| | - Seung Won Jang
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
| | - Ji Eun Park
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
| | - Young Jin Heo
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan 47392, Korea
| | - Young Jun Choi
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
| | - Jung Hwan Baek
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
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Rigoglio NN, Barreto RS, Favaron PO, Jacob JC, Smith LC, Gastal MO, Gastal EL, Miglino MA. Central Nervous System and Vertebrae Development in Horses: a Chronological Study with Differential Temporal Expression of Nestin and GFAP. J Mol Neurosci 2017; 61:61-78. [PMID: 27525635 DOI: 10.1007/s12031-016-0805-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Accepted: 07/28/2016] [Indexed: 10/21/2022]
Abstract
The neural system is one of the earliest systems to develop and the last to be fully developed after birth. This study presents a detailed description of organogenesis of the central nervous system (CNS) at equine embryonic/fetal development between 19 and 115 days of pregnancy. The expression of two important biomarkers in the main structure of the nervous system responsible for neurogenesis in the adult individual, and in the choroid plexus, was demonstrated by Nestin and glial fibrillary acid protein (GFAP) co-labeling. In the 29th day of pregnancy in the undifferentiated lateral ventricle wall, the presence of many cells expressing Nestin and few expressing GFAP was observed. After the differentiation of the lateral ventricle wall zones at 60 days of pregnancy, the subventricular zone, which initially had greater number of Nestin+ cells, began to show higher numbers of GFAP+ cells at 90 days of pregnancy. A similar pattern was observed for Nestin+ and GFAP+ cells during development of the choroid plexus. This study demonstrates, for the first time, detailed chronological aspects of the equine central nervous system organogenesis associated with downregulation of Nestin and upregulation of GFAP expression.
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Song XJ, Huang ZJ, Song WB, Song XS, Fuhr AF, Rosner AL, Ndtan H, Rupert RL. Attenuation Effect of Spinal Manipulation on Neuropathic and Postoperative Pain Through Activating Endogenous Anti-Inflammatory Cytokine Interleukin 10 in Rat Spinal Cord. J Manipulative Physiol Ther 2016; 39:42-53. [PMID: 26837229 DOI: 10.1016/j.jmpt.2015.12.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 12/09/2015] [Accepted: 12/10/2015] [Indexed: 10/22/2022]
Abstract
OBJECTIVES The purpose of this study was to investigate roles of the anti-inflammatory cytokine interleukin (IL) 10 and the proinflammatory cytokines IL-1β and tumor necrosis factor α (TNF-α) in spinal manipulation-induced analgesic effects of neuropathic and postoperative pain. METHODS Neuropathic and postoperative pain were mimicked by chronic compression of dorsal root ganglion (DRG) (CCD) and decompression (de-CCD) in adult, male, Sprague-Dawley rats. Behavioral pain after CCD and de-CCD was determined by the increased thermal and mechanical hypersensitivity of the affected hindpaw. Hematoxylin and eosin staining, whole-cell patch clamp electrophysiological recordings, immunohistochemistry, and enzyme-linked immunosorbent assay were used to examine the neural inflammation, neural excitability, and expression of c-Fos and PKC as well as levels of IL-1β, TNF-α, and IL-10 in blood plasma, DRG, or the spinal cord. We used the activator adjusting instrument, a chiropractic spinal manipulative therapy tool, to deliver force to the spinous processes of L5 and L6. RESULTS After CCD and de-CCD treatments, the animals exhibited behavioral and neurochemical signs of neuropathic pain manifested as mechanical allodynia and thermal hyperalgesia, DRG inflammation, DRG neuron hyperexcitability, induction of c-Fos, and the increased expression of PKCγ in the spinal cord as well as increased level of IL-1β and TNF-α in DRG and the spinal cord. Repetitive Activator-assisted spinal manipulative therapy significantly reduced simulated neuropathic and postoperative pain, inhibited or reversed the neurochemical alterations, and increased the anti-inflammatory IL-10 in the spinal cord. CONCLUSION These findings show that spinal manipulation may activate the endogenous anti-inflammatory cytokine IL-10 in the spinal cord and thus has the potential to alleviate neuropathic and postoperative pain.
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Affiliation(s)
- Xue-Jun Song
- Professor, Parker University, Parker Research Institute, Dallas, TX.
| | - Zhi-Jiang Huang
- Research Scientist, Parker University, Parker Research Institute, Dallas, TX
| | - William B Song
- (Volunteer) Research Assistant, Parker University, Parker Research Institute, Dallas, TX
| | - Xue-Song Song
- Research Scientist, Parker University, Parker Research Institute, Dallas, TX
| | - Arlan F Fuhr
- Professor, Parker University, Parker Research Institute, Dallas, TX
| | - Anthony L Rosner
- Research Consultant, Parker University, Parker Research Institute, Dallas, TX
| | - Harrison Ndtan
- Associate Professor, Parker University, Parker Research Institute, Dallas, TX
| | - Ronald L Rupert
- Research Consultant, Parker University, Parker Research Institute, Dallas, TX
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Yu H, Pan W, Wang H, Gao Y. A Time-Limited and Partially Reversible Model of Hypoganglionosis Induced by Benzalkonium Chloride Treatment. Neurochem Res 2016; 41:1138-44. [PMID: 26738989 DOI: 10.1007/s11064-015-1806-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 12/10/2015] [Accepted: 12/11/2015] [Indexed: 01/05/2023]
Abstract
Serosal application of benzalkonium chloride (BAC) has been previously applied to produce a model of aganglionosis; however, confusion remains regarding the extent of chemical ablation of enteric myenteric plexus after BAC treatment. The time sequence of BAC-induced effects on the myenteric plexus of the rat colon was determined and followed the morphologic changes. After sacrifice of animals 7, 14, 28, 56, 84 or 168 days postintervention, colonic tissue samples were removed, fixed in formalin, and cut into 5-μm longitudinal sections for histological analysis. The neural analysis was used to re-evaluate BAC treatments for the appropriate model. Compared with rats in sham groups, rats in 0.1 %-30-min BAC group maintained only 15.27 ± 4.80 % of ganglia per section in a 1-cm/5-μm slice and 11.76 ± 2.30 % of ganglionic cells after 28 days, the lower and stable number of ganglionic cells between Day 7 and 84 (from 11.67 ± 2.10 to 19.05 ± 5.10 %). Although an increase, ganglionic cell numbers did not recover at Day168 when compared with the numbers in sham groups. The results showed that characteristics of rats in the 0.1 %-30-min BAC group between Day 7 and 84 most closely kept in stable state, suggesting that these treatment parameters are ideal for producing a hypoganglia model of hypoganglionosis.
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Kommuru H, Jothi S, Bapuji P, Sree D L, Antony J. Thoracic part of sympathetic chain and its branching pattern variations in South Indian cadavers. J Clin Diagn Res 2014; 8:AC09-12. [PMID: 25653929 DOI: 10.7860/jcdr/2014/9274.5246] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 08/30/2014] [Indexed: 11/24/2022]
Abstract
INTRODUCTION The sympathetic trunks are two ganglionated nerve trunks that extend the whole length of the vertebral column.The two trunks end by joining together to form a single ganglion, the ganglion impar. The thoracic part of the sympathetic chain runs downward and leaves the thorax behind the medial arcuate ligament. The preganglionic fibers which are grouped together to forms planchnic nerves and supply the abdominal viscera. Anatomical variations of the thoracic sympathetic trunk in relation to intercostal nerves may be one of the reasons that cause surgical failures. Therefore, our present study aimed to investigate the sympathetic variations in the cadavers. MATERIALS AND METHODS In the present study we have investigated 31 embalmed cadavers thoracic cavities were eviscerated, the posterior thoracic walls were dissected carefully to expose the sympathetic chain and its branches. RESULTS Stellate ganglion was observed bilaterally in 4 cadavers and unilaterally in 15 cadavers. Greater splanchnic nerve highest origin was 4(th) ganglion and the lowest origin was 11(th) ganglion. Common origin for the lesser splanchnic nerve was from the 11(th) ganglion. Common origin for the least splanchnic nerves was from the 12(th) ganglion. CONCLUSION Information on the variability of the anatomy of the thoracic sympathetic chain and splanchnic nerves may be important for the success of subdiaphragmatic neuroablative surgical approaches to pain control and splanchnic neurectomy for the management of chronic abdominal pain.
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Affiliation(s)
- Hemanth Kommuru
- Tutor, Department of Anatomy, SSSMC & RI , Ammapettai, Tiruporur, Gudvancherry Main Road, Nellikuppam, Kancheepurm, Tamil Nadu, India
| | - Swayam Jothi
- Professor & Head, Department of Anatomy, SSSMC & RI , Ammapettai, Tiruporur, Gudvancherry Main Road, Nellikuppam, Kancheepurm, Tamil Nadu, India
| | - P Bapuji
- Professor & Head, Department of Anatomy, ASRAM , Eluru Andhra Pradesh, India
| | - Lekha Sree D
- PG Student, Department of Anatomy, Guntur Medical College , Guntur, India
| | - Jacintha Antony
- Professor & Head, Department of Anatomy, Sri Balaji Medical College , Chennai, India
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Cox JA, LaMora A, Johnson SL, Voigt MM. Novel role for carbamoyl phosphate synthetase 2 in cranial sensory circuit formation. Int J Dev Neurosci 2014; 33:41-8. [PMID: 24280100 DOI: 10.1016/j.ijdevneu.2013.11.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 11/11/2013] [Accepted: 11/15/2013] [Indexed: 11/23/2022] Open
Abstract
In zebrafish, cranial sensory circuits form by 4 days post-fertilization. We used a forward genetic screen to identify genes involved in the formation of these circuits. In one mutant allele, sl23, axons arising from the epibranchial sensory ganglia do not form their stereotypical terminal fields in the hindbrain. These embryos also had small eyes and deformed jaws, suggesting a pleiotropic effect. Using positional cloning, a 20-nucleotide deletion in the carbamoyl-phosphate-synthetase2-aspartate-transcarbamylase-dihydroorotase (cad) gene was found. Injection of a CAD morpholino phenocopied the mutant and mutants were rescued by injection of cad RNA. Cad activity is required for pyrimidine biosynthesis, and thus is a prerequisite for nucleic acid production and UDP-dependent protein glycosylation. Perturbation of nucleic acid biosynthesis can result in cell death. sl23 mutants did not exhibit elevated cell death, or gross morphological changes, in their hindbrains. To determine if defective protein glycosylation was involved in the aberrant targeting of sensory axons, we treated wild type embryos with tunicamycin, which blocks N-linked protein glycosylation. Interference with glycosylation via tunicamycin treatment mimicked the sl23 phenotype. Loss of cad reveals a critical role for protein glycosylation in cranial sensory circuit formation.
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Fernandez MA, Yu U, Zhang G, White R, Sparwasser T, Alexander SI, Jones CA. Treg depletion attenuates the severity of skin disease from ganglionic spread after HSV-2 flank infection. Virology 2013; 447:9-20. [PMID: 24210095 DOI: 10.1016/j.virol.2013.08.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 04/03/2013] [Accepted: 08/22/2013] [Indexed: 10/26/2022]
Abstract
Regulatory T cells (Tregs) attenuate lesion severity and disease after HSV ocular or genital infection, but their role in cutaneous infection remains unclear. Treg depletion (anti-CD25 mAb in C57BL/6 mice or diphtheria toxin (DT) in DEREG mice) prior to tk-deficient HSV-2 flank infection significantly decreased skin lesion severity, granulocyte receptor-1(Gr-1(+)) cell number, and chemokine (KC) expression in the secondary skin, but significantly increased immune effectors and chemokine expression (MCP-1, KC, VEGF-A) in the draining LN, and activated, interferon-γ producing CD8(+)T cells in the ganglia. Treg depletion also significantly reduced HSV-2 DNA in the ganglia. Thus, Tregs increase the severity of recurrent skin lesions, and differentially alter chemokine expression and immune effector homing in the skin and LN after cutaneous infection, and limit CD8(+) T cell responses in the ganglia. Our data suggests that effects of Treg manipulation on recurrent herpes lesions should be considered when developing Treg mediated therapeutics.
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Affiliation(s)
- Marian A Fernandez
- Centres for Perinatal Infection Research and Kidney Research, The Children's Hospital at Westmead, Westmead, NSW, Australia; Discipline of Paediatrics and Child Health, Sydney Medical School, University of Sydney, Locked Bag 4001, Westmead, NSW 2145, Australia.
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