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Mustafa FEZA, Abdelhafez EA, Abd-Elhafeez HH. Characterization of the primo vascular system in rabbit vagina. Microsc Res Tech 2021; 85:799-806. [PMID: 34590388 DOI: 10.1002/jemt.23951] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 08/06/2021] [Accepted: 09/18/2021] [Indexed: 12/22/2022]
Abstract
The primo vascular system (PVS) is observed in different parts of the body under different physiological and disease conditions. Previously, the PVS was not observed in the vagina. The vaginal samples of this study were collected from the female genitalia of healthy New Zealand white rabbits from the animal house, Faculty of Medicine, Assiut University. The vaginal samples were fixed in Bouin's solution. The sections were stained with hematoxylin and eosin and Crossmon's trichrome. Additionally, the sections were immunohistochemically stained with neuron-specific enolase (NSE) and vascular endothelial growth factor (VEGF). A primo node was observed on the lymph vessel of the vagina and has several characteristics that resemble those of the previously discovered primo nodes. The primo node in this study was surrounded by mesothelial cells that provide positive immunoreactivity to NSE and VEGF. Sinuses of different sizes, floating cells, telocyte-like cell, and primo microcells were observed as the main constituents of the primo node. Additionally, migratory cells were detected, which passed from the primo node to the enclosing lymph vessel.
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Affiliation(s)
- Fatma El-Zahraa A Mustafa
- Department of Anatomy and Histology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Enas A Abdelhafez
- Department of Anatomy and Histology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Hanan H Abd-Elhafeez
- Department of Anatomy and Histology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
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Pawitan JA. Various stem cells in acupuncture meridians and points and their putative roles. J Tradit Complement Med 2018; 8:437-442. [PMID: 30302323 PMCID: PMC6174264 DOI: 10.1016/j.jtcme.2017.08.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 04/05/2017] [Accepted: 08/01/2017] [Indexed: 02/01/2023] Open
Abstract
Traditional Chinese and Korean medicine uses various manipulations on acupuncture points/acupoints that are located along imaginary lines on the surface of a human body, which are called 'meridians'. Acupuncture has been used from the ancient time till now to cure various diseases, including for the purpose of regenerative medicine. In various studies, meridians are alternatively called as Bong-Han ducts, primo vessels, or hyaluronic-acid rich ducts, while acupoints are called Bong-Han corpuscles, primo nodes, or hyaluronic-acid rich nodes. Meridians and acupuncture points form a system that is now called primo vascular system (PVS), which is claimed to contain various kinds of stem cells. The stem cell size is between 1-5 microns. The smallest is the primo microcells that have a putative role in regeneration. Other stem cells are adult pluripotent and hematopoietic stem cells that play a role in extra bone marrow hematopoiesis. The presence of PVS has been reproduced by many studies. However, the various stem cells need further studies to prove their existence and function, and harvesting PVS to isolate the stem cells might harm the health of the donor.
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Affiliation(s)
- Jeanne Adiwinata Pawitan
- Department of Histology, Faculty of Medicine Universitas Indonesia, Jl. Salemba 6, Jakarta, 10430, Indonesia
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Abstract
BACKGROUND Metastasis is the main cause of mortality in cancer patients. Two major routes of cancer cell spread are currently being recognized: dissemination via blood vessels (hematogenous spread) and dissemination via the lymphatic system (lymphogenous spread). Here, our current knowledge on the role of both blood and lymphatic vessels in cancer cell metastasis is summarized. In addition, I will discuss why cancer cells select one or both of the two routes to disseminate and I will provide a short description of the passive and active models of intravasation. Finally, lymphatic vessel density (LVD), blood vessel density (BVD), interstitial fluid pressure (IFP) and tumor hypoxia, as well as regional lymph node metastasis and the recently discovered primo vascular system (PVS) will be highlighted as important factors influencing tumor cell motility and spread and, ultimately, clinical outcome. CONCLUSIONS Lymphangiogenesis and angiogenesis are important phenomena involved in the spread of cancer cells and they are associated with a poor prognosis. It is anticipated that new discoveries and advancing knowledge on these phenomena will allow an improvement in the treatment of cancer patients.
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Affiliation(s)
- Roman Paduch
- Department of Virology and Immunology, Institute of Microbiology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, 20-033, Lublin, Poland.
- Department of General Ophthalmology, Medical University of Lublin, Chmielna 1, 20-079, Lublin, Poland.
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Rai R, Chandra V, Kwon BS. A Hyaluronic Acid-Rich Node and Duct System in Which Pluripotent Adult Stem Cells Circulate. Stem Cells Dev 2015; 24:2243-58. [PMID: 26149660 DOI: 10.1089/scd.2015.0024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Regenerative medicine is in demand of adult pluripotent stem cells (PSCs). The "Bonghan System (BHS)" was discovered and suggested to contain cells with regenerative capacity in the early 1960s. It had been ignored for a long time due to the lack of sufficient details of experiments, but about 37 years after the initial report, the BHS was rediscovered and named as the "primo vascular system." Recently, we have discovered a similar structure, which contained a high level of hyaluronic acid, and hence, named the structure as hyaluronic acid-rich node and duct system (HAR-NDS). Here we discuss the HAR-NDS concept starting from the discovery of BHS, and findings pointing to its importance in regenerative medicine. This HAR-NDS contained adult PSCs, called node and duct stem cells (NDSCs), which appeared to circulate in it. We describe the evidence that NDSCs can differentiate into hemangioblasts that further produced differentiated blood cells. The NDSCs had a potential to differentiate into neuronal cells and hepatocytes; thus, NDSCs had a capability to become cells from all three germ layers. This system appears to be a promising alternative source of adult stem cells that can be easily delivered to their target tissues and participate in tissue regeneration.
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Affiliation(s)
- Rajani Rai
- 1 Cancer Immunology Branch, National Cancer Center , Ilsan, Gyeonggi, Korea
| | - Vishal Chandra
- 2 Research Institute, National Cancer Center , Ilsandong-gu, Goyang, Korea
| | - Byoung S Kwon
- 1 Cancer Immunology Branch, National Cancer Center , Ilsan, Gyeonggi, Korea.,3 Section of Clinical Immunology, Department of Medicine, Tulane University Health Sciences Center , New Orleans, Louisiana
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Lee HS, Kang DI, Yoon SZ, Ryu YH, Lee I, Kim HG, Lee BC, Lee KB. Evidence for novel age-dependent network structures as a putative primo vascular network in the dura mater of the rat brain. Neural Regen Res 2015; 10:1101-6. [PMID: 26330833 PMCID: PMC4541241 DOI: 10.4103/1673-5374.160103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2015] [Indexed: 12/02/2022] Open
Abstract
With chromium-hematoxylin staining, we found evidence for the existence of novel age-dependent network structures in the dura mater of rat brains. Under stereomicroscopy, we noticed that chromium-hematoxylin-stained threadlike structures, which were barely observable in 1-week-old rats, were networked in specific areas of the brain, for example, the lateral lobes and the cerebella, in 4-week-old rats. In 7-week-old rats, those structures were found to have become larger and better networked. With phase contrast microscopy, we found that in 1-week-old rats, chromium-hematoxylin-stained granules were scattered in the same areas of the brain in which the network structures would later be observed in the 4- and 7-week-old rats. Such age-dependent network structures were examined by using optical and transmission electron microscopy, and the following results were obtained. The scattered granules fused into networks with increasing age. Cross-sections of the age-dependent network structures demonstrated heavily-stained basophilic substructures. Transmission electron microscopy revealed the basophilic substructures to be clusters with high electron densities consisting of nanosized particles. We report these data as evidence for the existence of age-dependent network structures in the dura mater, we discuss their putative functions of age-dependent network structures beyond the general concept of the dura mater as a supporting matrix.
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Affiliation(s)
- Ho-Sung Lee
- Ki Primo Research Laboratory, Division of Electrical Engineering, KAIST Institute for Information Technology Convergence, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea ; Nadi Primo Research Institute, Graduate School of Integrative Medicine, Sun Moon University, Asan-si, Korea
| | - Dai-In Kang
- Pharmacopuncture Medical Research Center, Korean Pharmacopuncture Institute, Seoul, Korea
| | - Seung Zhoo Yoon
- Department of Anesthesiology and Pain Medicine, College of Medicine, Korea University, Seoul, Korea
| | - Yeon Hee Ryu
- Acupuncture, Moxibustion & Meridian Research Group, Medical Research Division, Korea Institute of Oriental Medicine, Seoul, Korea
| | - Inhyung Lee
- Department of Veterinary Surgery, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Hoon-Gi Kim
- Faculty of Liberal Education, Seoul National University, Seoul, Korea
| | - Byung-Cheon Lee
- Ki Primo Research Laboratory, Division of Electrical Engineering, KAIST Institute for Information Technology Convergence, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Ki Bog Lee
- Korea Atomic Energy Research Institute, Daejeon, Korea
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McDonald MJ. Will the Primo Vascular System Finally Solve the Mystery of Acupuncture? Med Acupunct 2015. [DOI: 10.1089/acu.2014.1075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Mark J. McDonald
- Department of Pediatrics, Division of Pediatric Critical Care, Pediatric Acupuncture, University of Louisville School of Medicine, Louisville, KY
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