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For: Bragin DE, Kameneva MV, Bragina OA, Thomson S, Statom GL, Lara DA, Yang Y, Nemoto EM. Rheological effects of drag-reducing polymers improve cerebral blood flow and oxygenation after traumatic brain injury in rats. J Cereb Blood Flow Metab 2017;37:762-775. [PMID: 28155574 PMCID: PMC5363490 DOI: 10.1177/0271678x16684153] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]

For:	Bragin DE, Kameneva MV, Bragina OA, Thomson S, Statom GL, Lara DA, Yang Y, Nemoto EM. Rheological effects of drag-reducing polymers improve cerebral blood flow and oxygenation after traumatic brain injury in rats. J Cereb Blood Flow Metab 2017;37:762-775. [PMID: 28155574 PMCID: PMC5363490 DOI: 10.1177/0271678x16684153] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]

Number

Cited by Other Article(s)

Shirokov A, Blokhina I, Fedosov I, Ilyukov E, Terskov A, Myagkov D, Tuktarov D, Tzoy M, Adushkina V, Zlatogosrkaya D, Evsyukova A, Telnova V, Dubrovsky A, Dmitrenko A, Manzhaeva M, Krupnova V, Tuzhilkin M, Elezarova I, Navolokin N, Saranceva E, Iskra T, Lykova E, Semyachkina-Glushkovskaya O. Different Effects of Phototherapy for Rat Glioma during Sleep and Wakefulness. Biomedicines 2024;12:262. [PMID: 38397864 PMCID: PMC10886766 DOI: 10.3390/biomedicines12020262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 02/25/2024] Open

Affiliation(s)

Alexander Shirokov Institute of Biochemistry and Physiology of Plants and Microorganisms, Saratov Scientific Centre of the Russian Academy of Sciences, Prospekt Entuziastov 13, 410049 Saratov, Russia Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Inna Blokhina Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Ivan Fedosov Physics Department, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.F.); (E.I.); (D.M.); (D.T.); (M.T.); (A.D.)
Egor Ilyukov Physics Department, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.F.); (E.I.); (D.M.); (D.T.); (M.T.); (A.D.)
Andrey Terskov Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Dmitry Myagkov Physics Department, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.F.); (E.I.); (D.M.); (D.T.); (M.T.); (A.D.)
Dmitry Tuktarov Physics Department, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.F.); (E.I.); (D.M.); (D.T.); (M.T.); (A.D.)
Maria Tzoy Physics Department, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.F.); (E.I.); (D.M.); (D.T.); (M.T.); (A.D.)
Viktoria Adushkina Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Daria Zlatogosrkaya Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Arina Evsyukova Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Valeria Telnova Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Alexander Dubrovsky Physics Department, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.F.); (E.I.); (D.M.); (D.T.); (M.T.); (A.D.)
Alexander Dmitrenko Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Maria Manzhaeva Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Valeria Krupnova Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Matvey Tuzhilkin Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Inna Elezarova Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Nikita Navolokin Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.) Department of Pathological Anatomy, Saratov Medical State University, Bolshaya Kazachaya Str. 112, 410012 Saratov, Russia
Elena Saranceva Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Tatyana Iskra Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Ekaterina Lykova Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.)
Oxana Semyachkina-Glushkovskaya Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.B.); (A.T.); (V.A.); (D.Z.); (A.E.); (V.T.); (A.D.); (M.M.); (V.K.); (M.T.); (I.E.); (N.N.); (E.S.); (T.I.); (E.L.) Physics Department, Humboldt University, Newtonstrasse 15, 12489 Berlin, Germany

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Govender K, Walser C, Cabrales P. High-molecular-weight linear polymers improve microvascular perfusion after extracorporeal circulation. J Appl Physiol (1985) 2024;136:213-223. [PMID: 38059289 DOI: 10.1152/japplphysiol.00397.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 11/30/2023] [Accepted: 11/30/2023] [Indexed: 12/08/2023] Open

Abstract

High-molecular-weight linear polymers (HMWLPs) have earned the name "drag-reducing polymers" because of their ability to reduce drag in turbulent flows. Recently, these polymers have become popular in bioengineering applications. This study investigated whether the addition of HMWLP in a venoarterial extracorporeal circulation (ECC) model could improve microvascular perfusion and oxygenation. Golden Syrian hamsters were instrumented with a dorsal skinfold window chamber and subjected to ECC using a circuit comprised of a peristaltic pump and a bubble trap. The circuit was primed with lactated Ringer solution (LR) containing either 5 ppm of polyethylene glycol (PEG) with a low molecular weight of 500 kDa (PEG500k) or 5 ppm of PEG with a high molecular weight of 3,500 kDa (PEG3500k). After 90 min of ECC at 15% of the animal's cardiac output, the results showed that the addition of PEG3500k to LR improved microvascular blood flow in arterioles and venules acutely (2 h after ECC), whereas functional capillary density showed improvement up to 24 h after ECC. Similarly, PEG3500k improved venular hemoglobin O2 saturation on the following day after ECC. The serum and various excised organs all displayed reduced inflammation with the addition of PEG3500k, and several of these organs also had a reduction in markers of damage with the HMWLPs compared to LR alone. These promising results suggest that the addition of small amounts of PEG3500k can help mitigate the loss of microcirculatory function and reduce the inflammatory response from ECC procedures.NEW & NOTEWORTHY High-molecular-weight linear polymers have gained traction in bioengineering applications. The addition of PEG3500k to lactated Ringer solution (LR) improved microvascular blood flow in arterioles and venules acutely after extracorporeal circulation (ECC) in a hamster model and improved functional capillary density up to 24 h after ECC. PEG3500k improved venular hemoglobin O2 saturation and oxygen delivery acutely after ECC and reduced inflammation in various organs compared to LR alone.

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Semyachkina-Glushkovskaya O, Sokolovski S, Fedosov I, Shirokov A, Navolokin N, Bucharskaya A, Blokhina I, Terskov A, Dubrovski A, Telnova V, Tzven A, Tzoy M, Evsukova A, Zhlatogosrkaya D, Adushkina V, Dmitrenko A, Manzhaeva M, Krupnova V, Noghero A, Bragin D, Bragina O, Borisova E, Kurths J, Rafailov E. Transcranial Photosensitizer-Free Laser Treatment of Glioblastoma in Rat Brain. Int J Mol Sci 2023;24:13696. [PMID: 37762000 PMCID: PMC10530910 DOI: 10.3390/ijms241813696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/29/2023] [Accepted: 09/02/2023] [Indexed: 09/29/2023] Open

Affiliation(s)

Oxana Semyachkina-Glushkovskaya Physics Department, Humboldt University, Newtonstrasse 15, 12489 Berlin, Germany; Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (A.S.); (N.N.); (I.B.); (A.T.); (V.T.); (A.T.); (A.E.); (D.Z.); (V.A.); (A.D.); (M.M.); (V.K.)
Sergey Sokolovski Optoelectronics and Biomedical Photonics Group, AIPT, Aston University, Birmingham B4 7ET, UK;
Ivan Fedosov Physics Department, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.F.); (A.D.); (M.T.)
Alexander Shirokov Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (A.S.); (N.N.); (I.B.); (A.T.); (V.T.); (A.T.); (A.E.); (D.Z.); (V.A.); (A.D.); (M.M.); (V.K.) Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, Prospekt Entuziastov 13, 410049 Saratov, Russia
Nikita Navolokin Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (A.S.); (N.N.); (I.B.); (A.T.); (V.T.); (A.T.); (A.E.); (D.Z.); (V.A.); (A.D.); (M.M.); (V.K.) Department of Pathological Anatomy, Saratov Medical State University, Bolshaya Kazachaya Str. 112, 410012 Saratov, Russia;
Alla Bucharskaya Department of Pathological Anatomy, Saratov Medical State University, Bolshaya Kazachaya Str. 112, 410012 Saratov, Russia;
Inna Blokhina Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (A.S.); (N.N.); (I.B.); (A.T.); (V.T.); (A.T.); (A.E.); (D.Z.); (V.A.); (A.D.); (M.M.); (V.K.)
Andrey Terskov Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (A.S.); (N.N.); (I.B.); (A.T.); (V.T.); (A.T.); (A.E.); (D.Z.); (V.A.); (A.D.); (M.M.); (V.K.)
Alexander Dubrovski Physics Department, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.F.); (A.D.); (M.T.)
Valeria Telnova Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (A.S.); (N.N.); (I.B.); (A.T.); (V.T.); (A.T.); (A.E.); (D.Z.); (V.A.); (A.D.); (M.M.); (V.K.)
Anna Tzven Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (A.S.); (N.N.); (I.B.); (A.T.); (V.T.); (A.T.); (A.E.); (D.Z.); (V.A.); (A.D.); (M.M.); (V.K.)
Maria Tzoy Physics Department, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (I.F.); (A.D.); (M.T.)
Arina Evsukova Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (A.S.); (N.N.); (I.B.); (A.T.); (V.T.); (A.T.); (A.E.); (D.Z.); (V.A.); (A.D.); (M.M.); (V.K.)
Daria Zhlatogosrkaya Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (A.S.); (N.N.); (I.B.); (A.T.); (V.T.); (A.T.); (A.E.); (D.Z.); (V.A.); (A.D.); (M.M.); (V.K.)
Viktoria Adushkina Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (A.S.); (N.N.); (I.B.); (A.T.); (V.T.); (A.T.); (A.E.); (D.Z.); (V.A.); (A.D.); (M.M.); (V.K.)
Alexander Dmitrenko Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (A.S.); (N.N.); (I.B.); (A.T.); (V.T.); (A.T.); (A.E.); (D.Z.); (V.A.); (A.D.); (M.M.); (V.K.)
Maria Manzhaeva Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (A.S.); (N.N.); (I.B.); (A.T.); (V.T.); (A.T.); (A.E.); (D.Z.); (V.A.); (A.D.); (M.M.); (V.K.)
Valeria Krupnova Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (A.S.); (N.N.); (I.B.); (A.T.); (V.T.); (A.T.); (A.E.); (D.Z.); (V.A.); (A.D.); (M.M.); (V.K.)
Alessio Noghero Lovelace Biomedical Research Institute, Albuquerque, NM 87108, USA; (A.N.); (D.B.); (O.B.)
Denis Bragin Lovelace Biomedical Research Institute, Albuquerque, NM 87108, USA; (A.N.); (D.B.); (O.B.) Department of Neurology, School of Medicine, University of New Mexico, Albuquerque, NM 87131, USA
Olga Bragina Lovelace Biomedical Research Institute, Albuquerque, NM 87108, USA; (A.N.); (D.B.); (O.B.) Department of Neurology, School of Medicine, University of New Mexico, Albuquerque, NM 87131, USA
Ekaterina Borisova Institute of Electronics, Bulgarian Academy of Sciences, Tsarigradsko Chaussee Blvd. 72, 1784 Sofia, Bulgaria;
Jürgen Kurths Physics Department, Humboldt University, Newtonstrasse 15, 12489 Berlin, Germany; Department of Biology, Saratov State University, Astrakhanskaya Str. 83, 410012 Saratov, Russia; (A.S.); (N.N.); (I.B.); (A.T.); (V.T.); (A.T.); (A.E.); (D.Z.); (V.A.); (A.D.); (M.M.); (V.K.) Potsdam Institute for Climate Impact Research, Telegrafenberg A31, 14473 Potsdam, Germany Centre for Analysis of Complex Systems, Sechenov First Moscow State Medical University Moscow, 119991 Moscow, Russia
Edik Rafailov Optoelectronics and Biomedical Photonics Group, AIPT, Aston University, Birmingham B4 7ET, UK;

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Semyachkina-Glushkovskaya O, Bragin D, Bragina O, Socolovski S, Shirokov A, Fedosov I, Ageev V, Blokhina I, Dubrovsky A, Telnova V, Terskov A, Khorovodov A, Elovenko D, Evsukova A, Zhoy M, Agranovich I, Vodovozova E, Alekseeva A, Kurths J, Rafailov E. Low-Level Laser Treatment Induces the Blood-Brain Barrier Opening and the Brain Drainage System Activation: Delivery of Liposomes into Mouse Glioblastoma. Pharmaceutics 2023;15:567. [PMID: 36839889 PMCID: PMC9966329 DOI: 10.3390/pharmaceutics15020567] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 01/30/2023] [Accepted: 02/02/2023] [Indexed: 02/10/2023] Open

Affiliation(s)

Oxana Semyachkina-Glushkovskaya Institute of Physics, Humboldt University, Newtonstrasse 15, 12489 Berlin, Germany Department of Biology, Saratov State University, Astrakhanskaya 82, 410012 Saratov, Russia
Denis Bragin Lovelace Biomedical Research Institute, Albuquerque, NM 87108, USA Department of Neurology, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA
Olga Bragina Lovelace Biomedical Research Institute, Albuquerque, NM 87108, USA
Sergey Socolovski Optoelectronics and Biomedical Photonics Group, Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, UK
Alexander Shirokov Department of Biology, Saratov State University, Astrakhanskaya 82, 410012 Saratov, Russia Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, Prospekt Entuziastov 13, 410049 Saratov, Russia
Ivan Fedosov Department of Biology, Saratov State University, Astrakhanskaya 82, 410012 Saratov, Russia
Vasily Ageev Department of Biology, Saratov State University, Astrakhanskaya 82, 410012 Saratov, Russia
Inna Blokhina Department of Biology, Saratov State University, Astrakhanskaya 82, 410012 Saratov, Russia
Alexander Dubrovsky Department of Biology, Saratov State University, Astrakhanskaya 82, 410012 Saratov, Russia
Valeria Telnova Department of Biology, Saratov State University, Astrakhanskaya 82, 410012 Saratov, Russia
Andrey Terskov Department of Biology, Saratov State University, Astrakhanskaya 82, 410012 Saratov, Russia
Alexander Khorovodov Department of Biology, Saratov State University, Astrakhanskaya 82, 410012 Saratov, Russia
Daria Elovenko Department of Biology, Saratov State University, Astrakhanskaya 82, 410012 Saratov, Russia
Arina Evsukova Department of Biology, Saratov State University, Astrakhanskaya 82, 410012 Saratov, Russia
Maria Zhoy Department of Biology, Saratov State University, Astrakhanskaya 82, 410012 Saratov, Russia
Ilana Agranovich Department of Biology, Saratov State University, Astrakhanskaya 82, 410012 Saratov, Russia
Elena Vodovozova Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia
Anna Alekseeva Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia
Jürgen Kurths Institute of Physics, Humboldt University, Newtonstrasse 15, 12489 Berlin, Germany Department of Biology, Saratov State University, Astrakhanskaya 82, 410012 Saratov, Russia Potsdam Institute for Climate Impact Research, Department of Complexity Science, Telegrafenberg A31, 14473 Potsdam, Germany
Edik Rafailov Optoelectronics and Biomedical Photonics Group, Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, UK

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Bragin DE, Bragina OA, Kameneva MV, Trofimov AO, Nemoto EM. Sex-Specific and Dose-Dependent Effects of Drag-Reducing Polymers on Microcirculation and Tissue Oxygenation in Rats After Traumatic Brain Injury. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023;1438:77-81. [PMID: 37845443 DOI: 10.1007/978-3-031-42003-0_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]

Semyachkina-Glushkovskaya O, Diduk S, Anna E, Elina D, Artem K, Khorovodov A, Shirokov A, Fedosov I, Dubrovsky A, Blokhina I, Terskov A, Navolokin N, Evsukova A, Elovenko D, Adushkina V, Kurths J. Music improves the therapeutic effects of bevacizumab in rats with glioblastoma: Modulation of drug distribution to the brain. Front Oncol 2022;12:1010188. [PMID: 36313687 PMCID: PMC9606698 DOI: 10.3389/fonc.2022.1010188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open

Abstract

Background

The development of new methods for modulation of drug distribution across to the brain is a crucial step in the effective therapies for glioblastoma (GBM). In our previous work, we discovered the phenomenon of music-induced opening of the blood-brain barrier (OBBB) in healthy rodents. In this pilot study on rats, we clearly demonstrate that music-induced BBB opening improves the therapeutic effects of bevacizumab (BZM) in rats with GBM via increasing BZM distribution to the brain along the cerebral vessels.

Methods

The experiments were performed on Wistar male rats (200–250 g, n=161) using transfected C6-TagRFP cell line and the loud rock music for OBBB. The OBBB was assessed by spectrofluorometric assay of Evans Blue (EB) extravasation and confocal imaging of fluorescent BZM (fBZM) delivery into the brain. Additionally, distribution of fBZM and Omniscan in the brain was studied using fluorescent and magnetic resonance imaging (MRI), respectively. To analyze the therapeutic effects of BZM on the GBM growth in rats without and with OBBB, the GBM volume (MRI scans), as well as immunohistochemistry assay of proliferation (Ki67 marker) and apoptosis (Bax marker) in the GBM cells were studied. The Mann–Whitney–Wilcoxon test was used for all analysis, the significance level was p < 0.05, n=7 in each group.

Results

Our finding clearly demonstrates that music-induced OBBB increases the delivery of EB into the brain tissues and the extravasation of BZM into the brain around the cerebral vessels of rats with GBM. Music significantly increases distribution of tracers (fBZM and Omniscan) in the rat brain through the pathways of brain drainage system (perivascular and lymphatic), which are an important route of drug delivery into the brain. The music-induced OBBB improves the suppressive effects of BZM on the GBM volume and the cellular mechanisms of tumor progression that was accompanied by higher survival among rats in the GBM+BZM+Music group vs. other groups.

Conclusion

We hypothesized that music improves the therapeutic effects of BZM via OBBB in the normal cerebral vessels and lymphatic drainage of the brain tissues. This contributes better distribution of BZM in the brain fluids and among the normal cerebral vessels, which are used by GBM for invasion and co-opt existing vessels as a satellite tumor form. These results open the new perspectives for an improvement of therapeutic effects of BZM via the music-induced OBBB for BZM in the normal cerebral vessels, which are used by GBM for migration and progression.

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Affiliation(s)

Oxana Semyachkina-Glushkovskaya Humboldt University, Institute of Physics, Berlin, Germany Deparment of Biology, Saratov State University, Saratov, Russia *Correspondence: Oxana Semyachkina-Glushkovskaya,
Sergey Diduk Laboratory of Pharmaceutical Biotechnology, Pushchino State Institute of Natural Science, Pushchino, Russia Department of Biotechnology, Leeners LLС, Moscow, Russia
Eroshova Anna Laboratory of Pharmaceutical Biotechnology, Pushchino State Institute of Natural Science, Pushchino, Russia Department of Biotechnology, Leeners LLС, Moscow, Russia
Dosadina Elina Laboratory of Pharmaceutical Biotechnology, Pushchino State Institute of Natural Science, Pushchino, Russia Department of Biotechnology, Leeners LLС, Moscow, Russia
Kruglov Artem Laboratory of Pharmaceutical Biotechnology, Pushchino State Institute of Natural Science, Pushchino, Russia Department of Biotechnology, Leeners LLС, Moscow, Russia
Alexander Khorovodov Deparment of Biology, Saratov State University, Saratov, Russia
Alexander Shirokov Deparment of Biology, Saratov State University, Saratov, Russia Institute of Biochemistry and Physiology of Plants and Microorganisms, Saratov Scientific Centre of the Russian Academy of Sciences (IBPPM RAS), Saratov, Russia
Ivan Fedosov Deparment of Biology, Saratov State University, Saratov, Russia
Alexander Dubrovsky Deparment of Biology, Saratov State University, Saratov, Russia
Inna Blokhina Deparment of Biology, Saratov State University, Saratov, Russia
Andrey Terskov Deparment of Biology, Saratov State University, Saratov, Russia
Nikita Navolokin Deparment of Biology, Saratov State University, Saratov, Russia Department of Pathological Anatomy, Saratov Medical State University, Saratov, Russia
Arina Evsukova Deparment of Biology, Saratov State University, Saratov, Russia
Daria Elovenko Deparment of Biology, Saratov State University, Saratov, Russia
Viktoria Adushkina Deparment of Biology, Saratov State University, Saratov, Russia
Jürgen Kurths Humboldt University, Institute of Physics, Berlin, Germany Deparment of Biology, Saratov State University, Saratov, Russia Potsdam Institute for Climate Impact Research, Department of Complexity Science, Potsdam, Germany

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Li E, Zheng L, Li Y, Fan L, Zhao S, Liu S. Investigation of the drag reduction of hydrolyzed polyacrylamide–xanthan gum composite solution in turbulent flow. ASIA-PAC J CHEM ENG 2022. [DOI: 10.1002/apj.2791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]

Crompton D, Gudla S, Waters JH, Sundd P, Kameneva MV. Hemorheological Approach to Improve Perfusion of Red Blood Cells with Reduced Deformability Using Drag-Reducing Polymer (In Vitro Study). ASAIO J 2022;68:707-713. [PMID: 34406139 PMCID: PMC8847539 DOI: 10.1097/mat.0000000000001559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open

Chaigneau E, Charpak S. Measurement of Blood Velocity With Laser Scanning Microscopy: Modeling and Comparison of Line-Scan Image-Processing Algorithms. Front Physiol 2022;13:848002. [PMID: 35464098 PMCID: PMC9022085 DOI: 10.3389/fphys.2022.848002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 02/22/2022] [Indexed: 11/13/2022] Open

Bragin DE, Bragina OA, Monickaraj F, Noghero A, Trofimov AO, Nemoto EM, Kameneva MV. Drag-Reducing Polymers Improve Vascular Hemodynamics and Tissue Oxygen Supply in Mouse Model of Diabetes Mellitus. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022;1395:329-334. [PMID: 36527657 PMCID: PMC10033219 DOI: 10.1007/978-3-031-14190-4_53] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]

Abstract

Diabetes mellitus (DM) is a chronic metabolic disease characterised by hyperglycaemia and glucose intolerance caused by impaired insulin action and/or defective insulin secretion. Long-term hyperglycaemia leads to various structural and functional microvascular changes within multiple tissues, including the brain, which involves blood-brain barrier alteration, inflammation and neuronal dysfunction. We have shown previously that drag-reducing polymers (DRP) improve microcirculation and tissue oxygen supply, thereby reducing neurologic impairment in different rat models of brain injury. We hypothesised that DRP could improve cerebral and skin microcirculation in the situation of progressive microangiopathies associated with diabetes using a mouse model of diabetes mellitus. Diabetes was induced in C57BL/6 J mice with five daily consecutive intraperitoneal injections of streptozotocin (50 mg/kg/day). Animals with plasma glucose concentrations greater than 250 mg/dL were considered diabetic and were used in the study following four months of diabetes. DRP (2 ppm) was injected biweekly during the last two weeks of the experiment. Cortical and skin (ear) microvascular cerebral blood flow (mCBF) and tissue oxygen supply (NADH) were measured by two-photon laser scanning microscopy (2PLSM). Cerebrovascular reactivity (CVR) was evaluated by measuring changes in arteriolar diameters and NADH (tissue oxygen supply) during the hypercapnia test. Transient hypercapnia was induced by a 60-second increase of CO₂ concentration in the inhalation mixture from 0% to 10%. Compared to non-diabetic animals, diabetic mice had a significant reduction in the density of functioning capillaries per mm³ (787 ± 52 vs. 449 ± 25), the linear velocity of blood flow (1.2 ± 0.31 vs. 0.54 ± 0.21 mm/sec), and the tissue oxygen supply (p < 0.05) in both brain and skin. DRP treatment was associated with a 50% increase in all three parameters (p < 0.05). According to the hypercapnia test, CVR was impaired in both diabetic groups but more preserved in DRP mice (p < 0.05). Our study in a diabetic mouse model has demonstrated the efficacy of hemorheological modulation of blood flow by DRP to achieve increased microcirculatory flows and tissue oxygen supply.

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Bragina OA, Sillerud LO, Kameneva MV, Nemoto EM, Bragin DE. Haemorheologic Enhancement of Cerebral Perfusion Improves Oxygen Supply and Reduces Aβ Plaques Deposition in a Mouse Model of Alzheimer's Disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022;1395:335-340. [PMID: 36527658 PMCID: PMC10036199 DOI: 10.1007/978-3-031-14190-4_54] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]

Abstract

Alzheimer's disease (AD) is a consequence of complex interactions of age-related neurodegeneration and vascular-associated pathologies, affecting more than 44 million people worldwide. For the last decade, it has been suggested that chronic brain hypoperfusion and consequent hypoxia play a direct role in the pathogenesis of AD. However, current treatments of AD have not focused on restoring or improving microvascular perfusion. In a previous study, we showed that drag reducing polymers (DRP) enhance cerebral blood flow and tissue oxygenation. We hypothesised that haemorheologic enhancement of cerebral perfusion by DRP would be useful for treating Alzheimer's disease. We used double transgenic B6C3-Tg(APPswe, PSEN1dE9) 85Dbo/Mmjax AD mice. DRP or vehicle (saline) was i.v. injected every week starting at four months of age till 12 months of age (10 mice/group). In-vivo 2-photon laser scanning microscopy was used to evaluate amyloid plaques development, cerebral microcirculation, and tissue oxygen supply/metabolic status (NADH autofluorescence). The imaging sessions were repeated once a month till 12 months of age. Statistical analyses were done by independent Student's t-test or Kolmogorov-Smirnov tests where appropriate. Differences between groups and time were determined using a two-way repeated measures ANOVA analysis for multiple comparisons and post hoc testing using the Mann-Whitney U test. In the vehicle group, numerous plaques completely formed in the cortex by nine months of age. The development of plaques accumulation was accompanied by cerebral microcirculation disturbances, reduction in tissue oxygen supply and metabolic impairment (NADH increase). DRP mitigated microcirculation and tissue oxygen supply reduction - microvascular perfusion was 29.5 ± 5%, and tissue oxygen supply was 22 ± 4% higher than in the vehicle group (p < 0.05). In the DRP group, amyloid plaques deposition was substantially less than in the vehicle group (p < 0.05). Thus, rheological enhancement of blood flow by DRP is associated with reduced rate of beta amyloid plaques deposition in AD mice.

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Li C, Shah KA, Powell K, Wu YC, Chaung W, Sonti AN, White TG, Doobay M, Yang WL, Wang P, Becker LB, Narayan RK. CBF oscillations induced by trigeminal nerve stimulation protect the pericontusional penumbra in traumatic brain injury complicated by hemorrhagic shock. Sci Rep 2021;11:19652. [PMID: 34608241 PMCID: PMC8490389 DOI: 10.1038/s41598-021-99234-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 09/16/2021] [Indexed: 02/08/2023] Open

Affiliation(s)

Chunyan Li Translational Brain Research Laboratory, The Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA. .,Department of Neurosurgery, Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA.
Kevin A Shah Translational Brain Research Laboratory, The Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA.,Department of Neurosurgery, Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
Keren Powell Translational Brain Research Laboratory, The Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA
Yi-Chen Wu Translational Brain Research Laboratory, The Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA
Wayne Chaung Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY, USA
Anup N Sonti Translational Brain Research Laboratory, The Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA.,Department of Neurosurgery, Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
Timothy G White Translational Brain Research Laboratory, The Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA.,Department of Neurosurgery, Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
Mohini Doobay Translational Brain Research Laboratory, The Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA
Weng-Lang Yang Department of Radiation Oncology, Albert Einstein College of Medicine, Bronx, NY, USA
Ping Wang Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY, USA
Lance B Becker Department of Emergency Medicine, Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
Raj K Narayan Translational Brain Research Laboratory, The Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA.,Department of Neurosurgery, Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA

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Polozova Anastasia V, Boyarinov Gennadii A, Nikolsky Viktor O, Zolotova Marina V, Deryugina Anna V. The functional indexes of RBCs and microcirculation in the traumatic brain injury with the action of 2-ethil-6-methil-3-hydroxypiridin succinate. BMC Neurosci 2021;22:57. [PMID: 34525969 PMCID: PMC8442361 DOI: 10.1186/s12868-021-00657-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 08/25/2021] [Indexed: 11/10/2022] Open

Abstract

RESEARCH AIM

To study the RBCs functional and metabolic parameters and the microcirculatory brain structure at traumatic brain injury (TBI) under the action of 2-ethyl-6-methyl-3-hydroxypyridine succinate.

METHODS

A closed TBI was modeled by the free fall of a load on the parietooccipital regions of head. We made studies of the influence of 2-ethil-6-methil-3-hydroxipiridin succinate on aggregation and electrophoretic mobility of RBCs, catalase activity, malonic dialdehyde concentration, adenosine triphosphate and 2.3-biphosphoglycerate (2.3 - BPG) concentrations in RBCs. The state of parenchyma and microcirculatory brain mainstream in post-traumatic period of TBI have been studied on micro-preparations.

RESULTS

The use of 2-ethyl-6-methyl-3-hydroxypyridine succinate under conditions of head injury leads to a decrease in MDA concentration and in aggregation of RBCs, to an increase in the 2.3-BPG concentration and RBC electrophoretic mobility compared to the control (group value). The most pronounced changes under the action of 2-ethyl-6-methyl-3-hydroxypyridine succinate were observed 3-7 days after the TBI. Significant indicators of the restoration of the microvasculature and brain tissue provoked by the use of 2-ethyl-6-methyl-3-hydroxypyridine succinate of were evident from the 7th day unlike the control group, where the restoration of structural morphological parameters was observed only on the 12th day of the post-traumatic period. Fast recovery of blood flow under the action of 2-ethyl-6-methyl-3-hydroxypyridine succinate ensured effective restoration of neurons and glia in comparison with the control group.

CONCLUSIONS

Early and long-term cytoprotective correction intensifies the oxygen transport function of the blood, prevents and / or reduces disorders of microvessels, neurons and glia in the post-traumatic period, thereby provides correction of hypoxic state and drives to the restoration of brain tissues homeostasis.

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Moslehi A, Yadollahi F, Hasanpour Dehkordi A, Kabiri M, Salehitali S. The effect of acupressure on the level of the blood pressure, respiratory rate, and heart rate in patients with the brain contusion under mechanical ventilation. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2021;18:835-841. [PMID: 34030219 DOI: 10.1515/jcim-2020-0195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 12/07/2020] [Indexed: 11/15/2022]

Abstract

OBJECTIVES

Injuries induced by the brain trauma from mild to life-threatening therefore prevents these complications need psychological, environmental, and physical support. Acupressure by reduces muscle tension, improves blood circulation and stimulates endorphins secretion naturally reduce pain in these patients therefore the aim of this study was to evaluate effect of acupressure on the level of the blood pressure, respiratory rate, and heart rate in patients with the brain contusion under mechanical ventilation.

METHODS

The present study was a clinical trial with a sample size of 64 brain contusion patients who were selected based on available sampling and then randomly assigned to control and experimental groups. Demographic information and check list of blood pressure, heart rate, and respiratory rate were recorded before intervention in two groups then acupressure at the p6 point for 10 min in both hands at the morning and evening for two consecutive days is done in intervention group while in control group this pressure was applied at the same time point at an inactive point such as thumb hands. After acupressure for both groups, physiological index was measured immediately, half and 1 h after every acupressure. Data were collected using a demographic questionnaire and physiological sheet. Data was analyzed using SPSS 21 software and analytical statistical tests (independent t-test, chi-square, Fisher's exact test).

RESULTS

The mean of blood pressure, heart rate, and respiratory rate before acupressure there was no significant statistical difference between two groups (p>0.05). but the mean of two consecutive days of blood pressure, heart rate, and respiratory rate after acupressure in the intervention group than control group was significantly different (p<0/05). Therefore, physiologic index before acupressure than after acupressure in the intervention group was significant statistical difference (p<0.001). The mean difference before the intervention than 12 h after the last intervention between two group was significant statistical difference (p<0/05) which that detected the stability of the effect of acupressure.

CONCLUSIONS

The results indicate that p6 point acupressure in the brain contusion patients under mechanical ventilation has been associated with improved blood pressure, pulse rate, and respiratory rate. While confirmation of these results requires further studies, but use of complementary medicine in recovery the physical condition and strengthening of the effect of nursing care of these patients should be considered.

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Ling FW, Abdulbari HA, Kadhum WA, Heng J. Investigating the flow behavior of dilute aloe vera biopolymer solutions in microchannel. CHEM ENG COMMUN 2021. [DOI: 10.1080/00986445.2020.1742115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]

Bragin DE, Bragina OA, Trofimov A, Berliba L, Kameneva MV, Nemoto EM. Improved Cerebral Perfusion Pressure and Microcirculation by Drag Reducing Polymer-Enforced Resuscitation Fluid After Traumatic Brain Injury and Hemorrhagic Shock. ACTA NEUROCHIRURGICA. SUPPLEMENT 2021;131:289-293. [PMID: 33839860 DOI: 10.1007/978-3-030-59436-7_54] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]

Crompton D, Vats R, Pradhan-Sundd T, Sundd P, Kameneva MV. Drag-reducing polymers improve hepatic vaso-occlusion in SCD mice. Blood Adv 2020;4:4333-4336. [PMID: 32915976 PMCID: PMC7509886 DOI: 10.1182/bloodadvances.2020002779] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/13/2020] [Indexed: 02/02/2023] Open

Wang Y, Wu F, Hu F, Wu Y, Zhou J, Xu Y, Shao X, Hu T. Drag-reducing polymers attenuates pulmonary vascular remodeling and right ventricular dysfunction in a rat model of chronic hypoxia-induced pulmonary hypertension. Clin Hemorheol Microcirc 2020;74:189-200. [PMID: 31476149 DOI: 10.3233/ch-190668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]

Abstract

Drag-reducing polymers (DRPs) was previously demonstrated to increase blood flow, tissue perfusion, and reduce vascular resistance. The purpose of this study was to investigate the effect of DRPs on pulmonary vascular remodeling and right ventricular dysfunction in a rat model of chronic hypoxia-induced pulmonary hypertension (HPH). A total of forty male Wistar rats were randomly and equally assigned into four experimental groups (Group I: normoxia + saline, Group II: normoxia + PEO, Group III: hypoxia + saline, Group IV: hypoxia + PEO) and maintained in normoxia (21% O2) or hypobaric hypoxia (10% O2). After four weeks, comparisons were made of the following aspects: the mean pulmonary arterial pressure (mPAP), right ventricular systolic pressure (RVSP), right ventricular hypertrophy, wall thickness of pulmonary trunk and arteries, internal diameter of pulmonary arteries, cardiomyocyte cross-sectional area (CM CSA), and ultrastructure of right ventricular. Treatment with PEO in Group IV attenuated the increases in RVSP and mPAP (40.5±7.2 and 34.7±7.0 mmHg, respectively, both P < 0.05), compared with Group III. Distal vascular remodeling was visible as a significant increase in medial wall thickness (64.2±12.3% vs. 43.95±7.0%, P < 0.01) and a remarkable decrease in internal diameter of small pulmonary arteries (35.2±9.7μ m vs. 50.4±14.7μ m, P < 0.01) in Group III, to a greater extent than that detected in Group IV. Nevertheless, no significant histopathological differences in medial wall thickness was observed in pulmonary trunk between Group III and Group IV (P > 0.05), denoting that PEO chiefly attenuated the remodeling of small pulmonary arteries rather than main arteries in hypoxic environment. Infusion of DRPs (intravenous injection twice weekly) also attenuated the index of right ventricular hypertrophy, protected against the increase of cardiomyocyte cross-sectional area, and provided protection for cardiac ultrastructure. DRP treatment with intravenous injection elicited a protective effect against pulmonary vascular remodeling and right ventricular dysfunction in the rat model of HPH. DRPs may offer a new potential approach for the treatment of HPH, which may have theoretical significance and application value to society.

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Resuscitation with Drag Reducing Polymers after Traumatic Brain Injury with Hemorrhagic Shock Reduces Microthrombosis and Oxidative Stress. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020. [PMID: 31893392 DOI: 10.1007/978-3-030-34461-0_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register]

Abstract

Outcome after traumatic brain injury (TBI) is worsened by hemorrhagic shock (HS); however, the existing volume expansion approach with resuscitation fluids (RF) is controversial as it does not adequately alleviate impaired microvascular cerebral blood flow (mCBF). We previously reported that resuscitation fluid with drag reducing polymers (DRP-RF) improves CBF by rheological modulation of hemodynamics. Here, we evaluate the efficacy of DRP-RF, compared to lactated Ringers resuscitation fluid (LR-RF), in reducing cerebral microthrombosis and reperfusion mitochondrial oxidative stress after TBI complicated by HS. Fluid percussion TBI (1.5 ATA, 50 ms) was induced in rats and followed by controlled HS to a mean arterial pressure (MAP) of 40 mmHg. DRP-RF or LR-RF was infused to restore MAP to 60 mmHg for 1 h (pre-hospital period), followed by blood re-infusion to a MAP = 70 mmHg (hospital period). In vivo 2-photon laser scanning microscopy over the parietal cortex was used to monitor microvascular blood flow, nicotinamide adenine dinucleotide (NADH) for tissue oxygen supply and mitochondrial oxidative stress (superoxide by i.v. hydroethidine [HEt], 1 mg/kg) for 4 h after TBI/HS, followed by Dil vascular painting during perfusion-fixation. TBI/HS decreased mCBF resulting in capillary microthrombosis and tissue hypoxia. Microvascular CBF and tissue oxygenation were significantly improved in the DRP-RF compared to the LR-RF treated group (p < 0.05). Reperfusion-induced oxidative stress, reflected by HEt fluorescence, was 32 ± 6% higher in LR-RF vs. DRP-RF (p < 0.05). Post-mortem whole-brain visualization of DiI painted vessels revealed multiple microthromboses in both hemispheres that were 29 ± 3% less in DRP-RF vs. LR-RF group (p < 0.05). Resuscitation after TBI/HS using DRP-RF effectively restores mCBF, reduces hypoxia, microthrombosis formation, and mitochondrial oxidative stress compared to conventional volume expansion with LR-RF.

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Dyer MR, Alexander W, Hassoune A, Chen Q, Alvikas J, Liu Y, Haldeman S, Plautz W, Loughran P, Li H, Boone B, Sadovsky Y, Sunnd P, Zuckerbraun BS, Neal MD. Platelet-derived extracellular vesicles released after trauma promote hemostasis and contribute to DVT in mice. J Thromb Haemost 2019;17:1733-1745. [PMID: 31294514 PMCID: PMC6773503 DOI: 10.1111/jth.14563] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/24/2019] [Accepted: 06/27/2019] [Indexed: 01/30/2023]

Erdener ŞE, Dalkara T. Small Vessels Are a Big Problem in Neurodegeneration and Neuroprotection. Front Neurol 2019;10:889. [PMID: 31474933 PMCID: PMC6707104 DOI: 10.3389/fneur.2019.00889] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 08/01/2019] [Indexed: 12/11/2022] Open

Abstract

The cerebral microcirculation holds a critical position to match the high metabolic demand by neuronal activity. Functionally, microcirculation is virtually inseparable from other nervous system cells under both physiological and pathological conditions. For successful bench-to-bedside translation of neuroprotection research, the role of microcirculation in acute and chronic neurodegenerative disorders appears to be under-recognized, which may have contributed to clinical trial failures with some neuroprotectants. Increasing data over the last decade suggest that microcirculatory impairments such as endothelial or pericyte dysfunction, morphological irregularities in capillaries or frequent dynamic stalls in blood cell flux resulting in excessive heterogeneity in capillary transit may significantly compromise tissue oxygen availability. We now know that ischemia-induced persistent abnormalities in capillary flow negatively impact restoration of reperfusion after recanalization of occluded cerebral arteries. Similarly, microcirculatory impairments can accompany or even precede neural loss in animal models of several neurodegenerative disorders including Alzheimer's disease. Macrovessels are relatively easy to evaluate with radiological or experimental imaging methods but they cannot faithfully reflect the downstream microcirculatory disturbances, which may be quite heterogeneous across the tissue at microscopic scale and/or happen fast and transiently. The complexity and size of the elements of microcirculation, therefore, require utilization of cutting-edge imaging techniques with high spatiotemporal resolution as well as multidisciplinary team effort to disclose microvascular-neurodegenerative connection and to test treatment approaches to advance the field. Developments in two photon microscopy, ultrafast ultrasound, and optical coherence tomography provide valuable experimental tools to reveal those microscopic events with high resolution. Here, we review the up-to-date advances in understanding of the primary microcirculatory abnormalities that can result in neurodegenerative processes and the combined neurovascular protection approaches that can prevent acute as well as chronic neurodegeneration.

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Chaigneau E, Roche M, Charpak S. Unbiased Analysis Method for Measurement of Red Blood Cell Size and Velocity With Laser Scanning Microscopy. Front Neurosci 2019;13:644. [PMID: 31316334 PMCID: PMC6610068 DOI: 10.3389/fnins.2019.00644] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 06/05/2019] [Indexed: 12/28/2022] Open

Masamoto K, Vazquez A. Optical imaging and modulation of neurovascular responses. J Cereb Blood Flow Metab 2018;38:2057-2072. [PMID: 30334644 PMCID: PMC6282226 DOI: 10.1177/0271678x18803372] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 09/02/2018] [Indexed: 12/17/2022]

Bragin DE, Lara DA, Bragina OA, Kameneva MV, Nemoto EM. Resuscitation Fluid with Drag Reducing Polymer Enhances Cerebral Microcirculation and Tissue Oxygenation After Traumatic Brain Injury Complicated by Hemorrhagic Shock. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018;1072:39-43. [PMID: 30178321 DOI: 10.1007/978-3-319-91287-5_7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]