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Endovascular Application of Low-Energy Laser in the Treatment of Dyscirculatory Angiopathy of Alzheimer’s Type

Journal of Behavioral and Brain Science 2012年第1期2卷 67-81页

作者： ivan v. Maksimovich Clinic of Cardiovascular Diseases Named after Most Holy John Tobolsky Moscow Russia

Purpose: We propose an analysis of dyscirculatory angiopathy of Alzheimer’s type (DAAT) endovascular treatment method based on transcatheter revascularization and recovery of collateral and microvascular bed of the brain by means of low-energy transluminal laser irradiation as well as its comparison with traditional Alzheimer’s disease (AD) treatment methods. Methods: The research involved 81 patients aged 34 - 79 (average age 67). 46 (46.8%) patients were treated using endovascular method—Test Group. 35 (43.2%) patients were given conventional treatment—Control Group. Patients were subdivided: Group (CDR-0): 9 (11.1%), pre-clinical stage or increased AD risk;Group (CDR-1): 24 (29.6%), mild dementia and cognitive impairment;Group (CDR-2): 31 (38.3%), moderate dementia and persistent cognitive impairment;Group (CDR-3): 17 (21.0%), severe dementia and cognitive impairment. Research plan included CT or MRI with subsequent temporal lobes volume calculation, brain scintigraphy (SG), rheoencephalography (REG), and cerebral MUGA. There were indications and contraindications for treatment in Test Group. In Group CDR-0, endovascular intervention was prophylactic, against the background of increasing memory impairment;in Groups CDR-1, CDR-2, CDR-3, it was conducted in 1 to 12 years period from AD symptoms appear-ance. Conservative treatment with Memantin and Rivastigmine was carried out in Control Group. Results: In Test Group, positive outcome accompanied by prolonged dementia decline, cognitive impairment decrease, and patients’ transition to CDR group of an earlier stage, was obtained in all cases. In Control Group, patients’ temporary stabilization in their own CDR group was achieved. Conclusions: Endovascular treatment of patients with AD different stages can not only reduce DAAT phenomena but can also cause AD regression possibly accompanied by regenerative processes in the cerebral tissue. Conservative treatment only allows stabilizing the patient’s condition for a whi

关键词： Alzheimer’s Disease Dementia Dyscirculatory Angiopathy of Alzheimer’s Type DAAT Hippocampus Temporal Lobes Atrophy Hypovascular Zone Laser Revascularization Brain Tissue Regeneration

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Dyscirculatory Angiopathy of Alzheimer's Type

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Journal of Behavioral and Brain Science 2011年第2期1卷 57-68页

作者： ivan v. Maksimovich 不详

Purpose: We assess the significance of dyscirculatory angiopathy of Alzheimer’s type (DAAT) in identify- ing the predisposition to the development and diagnosis of Alzheimer’s disease (AD) different stages. Meth- ods: 108 patients took part in the research:1) 49 aged 34-79 suffering from AD or running an increased risk of its development (those not diagnosed with AD but having growing memory disorders without any mani- festations of dementia or specific cognitive impairments, and having 2 or more immediate relatives with AD) - Test Group;2) 59 aged 28-78 suffering from different types of brain lesions accompanied by dementia but not suffering from AD or corresponding to their age norm - Control Group. All the patients underwent MRI, CT with subsequent calculation of the temporal lobes atrophy degree, brain scintigraphy (SG), rheoencepha- lography (REG), and MUGA. Results: Characteristic features of patients with an increased risk of AD as well as at its various stages are: 1) Temporal lobes and hippocampus atrophy ranging from 4% among those with an increased risk of AD to 62% among those at its advanced stages;2) DAAT manifestations: reduction of the capillary bed in the temporal and frontoparietal regions with the development of multiple arterioven- ous shunts of the same localization and correspondent early venous discharge accompanied by venous stasis on the border of the frontal and parietal region;3) DAAT phenomena equally develop both among those with an increased risk of developing AD and those at various AD stages. Similar changes are not observed among Control Group patients with other brain lesions, regardless of the severity of dementia, as well as among practically healthy people of the corresponding age group. Conclusion: Timely identification of the above- mentioned changes can reveal a predisposition to AD development long before its initial manifestations, and it allows differentiating AD from other diseases attended by dementia. In both cases, time

关键词： Alzheimer’s Disease Dementia Hippocampus Temporal Lobes Atrophy Dyscirculatory Angiopathy of Alzheimer’s Type

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The tomography dementia rating scale (TDR)—The rating scale of Alzheimer’s disease stages

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Health 2012年第9期4卷 712-719页

作者： ivan v. Maksimovich Clinic of Cardiovascular Diseases Named after Most Holy John Tobolsky Moscow Russia

The purpose of this research is to develop a morphologically determined scale—the Tomography Dementia Rating scale (TDR) to diagnose AD stages, based on the measurement of the severity of voluminal atrophic changes of the temporal lobes of the brain detected among patients during CT and MRI at various stages of the disease. The research included 140 patients aged 28 - 79. Test Group comprised 81 patients aged 34 - 79 suffering from various AD stages. Control Group consisted of 59 patients aged 28 - 78 who had various types of brain lesions with manifestations of dementia and cognitive impairment but who did not suffer from AD. CT and MRI data obtained has made it possible to create a scale that allows determining the severity of atrophic changes in the temporal lobes at each stage of AD development: 1) Pre-clinical AD stage—TDR-0: temporal lobes atrophy with a 4% - 8% decrease in tissue mass (corresponds to 26 - 28 MMSE points);2) Early AD Stage—mild dementia—TDR-1: temporal lobes atrophy with a 9% - 18% decrease in tissue mass (corresponds to CDR-1 and to 20 - 25 MMSE points);3) Middle AD stage—moderate dementia—TDR-2: temporal lobes atrophy with a 19% - 32% decrease in tissue mass (corresponds to CDR-2 and to 12 - 19 MMSE points);4) Late AD stage—heavy dementia—TDR-3: temporal lobes atrophy with a 33% - 62% decrease in tissue mass (corresponds to CDR-3 and to 7 - 11 MMSE points). Thereby, the developed Tomography Dementia Rating scale (TDR) complements the Clinical Dementia Rating scale (CDR) and allows a correct and objective determination of AD stages as well as an easy differentiation of existing lesions with neurodegenerative changes characteristic for other diseases accompanied by dementia and cognitive impairment.

关键词： Alzheimer's Disease AD Stage TDR CDR Dementia Hippocampus Atrophy of the Temporal Lobes of the Brain

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Dementia and Cognitive Impairment Reduction after Laser Transcatheter Treatment of Alzheimer’s Disease

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World Journal of Neuroscience 2015年第3期5卷 189-203页

作者： ivan v. Maksimovich Clinic of Cardiovascular Diseases Named after Most Holy John Tobolsky Moscow Russia

Reduced cerebral perfusion and microcirculation are found among AD causes, which should be considered in the development of new treatments for the disease. 165 patients with AD were examined. The examination plan included clinical assessment of dementia severity (CDR), cognitive function assessment (MMSE), laboratory examination, cerebral scintigraphy (SG), rheoencephalography (REG), cerebral CT and MRI, morphometric AD stages assessment (TDR) and cerebral multi-gated angiography (MUGA). 89 patients aged 34 - 79 (average age 67) were selected for the treatment: 31 (34.83%) male, 58 (65.17%) female patients. According to their AD stage, the patients were divided into: TDR-0 (preclinical stage)—10 (11.24%) patients, TDR-1 (early stage with mild dementia, mild cognitive impairment)—28 (31.46%) patients, TDR-2 (medium stage with moderate dementia, cognitive impairment sufficiently persistent)—34 (38.20%) patients, TDR-3 (late stage with sufficiently severe dementia and cognitive impairment)—17 (19.10%) patients. Test Group—46 (51.68%) patients—had transcatheter treatment with low-energy lasers. Control Group—43 (48.31%)—had conservative treatment with Memantin and Rivastigmine. The Test Group had cerebral microcirculation improvement leading to permanent dementia reduction and cognitive recovery which allowed transferring the patients to a lighter TDR group or withdrawing them from the scale. Control Group patients with earlier AD stages (TDR-0, TDR-1, TDR-2) obtained stabilization for a period of 6 months-3 years, with subsequent growth of dementia and cognitive impairment;patients with late AD stage (TDR-3) showed further increase of cognitive impairment and dementia. Transcatheter treatment allows reducing the effects of dyscirculatory angiopathy of Alzheimer’s type (DAAT) improving cerebral microcirculation and metabolism, which leads to permanent dementia regression and cognitive impairment reduction. These data show that AD treatment should be comprehensive and ai

关键词： Alzheimer’s Disease Dementia vascular Dysfunction Dyscirculatory Angiopathy of Alzheimer’s Type DAAT TDR Temporal Lobes Atrophy Laser Revascularization

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Disorders of cerebrovascular angioarchitectonics and microcirculation in the etiology and pathogenesis of Alzheimer’s disease

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Advances in Alzheimer's Disease 2013年第4期2卷 171-181页

作者： ivan v. Maksimovich Clinic of Cardiovascular Diseases Named after Most Holy John Tobolsky Moscow Russia

There have recently appeared many reports dedicated to cerebral hemodynamics disorders in AD. However, certain specific aspects of cerebral blood flow and microcirculation during this disease are not fully understood. This research focuses on the identification of particular features of cerebral angioarchitectonics and microcirculation at preclinical and clinical AD stages and on the determination of their importance in AD etiology and pathogenesis. 164 patients participated in the research: Test Group—81 patients with different AD stages;Control Group— 83 patients with etiologically different neurodegenerative brain lesions with manifestations of dementia and cognitive impairment but without AD. All patients underwent: assessment of cognitive function (MMSE), severity of dementia (CDR) and AD stages (TDR), laboratory examination, computed tomography (CT), magnetic resonance imaging (MRI), brain scintigraphy (SG), rheoencephalography (REG) and cerebral multigated angiography (MUGA). All Test Group patients, irrespective of their AD stage, had abnormalities of the cerebral microcirculation manifested in dyscirculatory angiopathy of Alzheimer’s type (DAAT), namely: reduction of the capillary bed in the hippocampus and frontal-parietal regions;development of multiple arteriovenous shunts in the same regions;early venous dumping of arterial blood through these shunts with simultaneous filling of arteries and veins;development of abnormally enlarged lateral venous trunks that receive blood from the arterio-venous shunts;anomalous venous congestion at the border of frontal and parietal region;increased loop formation of distal intracranial arterial branches. Control group patients did not have combinations of such changes. These abnormalities are specific for AD and can affect amyloid beta metabolism contributing to its accumulation in the brain tissue and thereby stimulating AD progression.

关键词： Alzheimer’s Disease Dementia TDR Microcirculation Microcirculatory Disorders Dyscirculatory Angiopathy of Alzheimer’s Type DAAT

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Transcatheter Technologies in Treating Brain Atherosclerosis Complicated by Chronic Cerebrovascular Insufficiency

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Neuroscience & Medicine 2014年第4期5卷 161-176页

作者： ivan v. Maksimovich Clinic of Cardiovascular Diseases Named after Most Holy John Tobolsky Moscow Russia

The research investigates the possibility of restoring the blood supply in patients with atherosclerosis of the brain, as well as the treatment of chronic cerebrovascular insufficiency. The research involves 946 patients aged 29 - 81 (average age 74) suffering from various types of cerebral atherosclerosis. 568 (60.04%) patients underwent transcatheter treatment—Test Group. 378 (39.96%) patients underwent conservative treatment—Control Group. The examination plan included laboratory diagnostics, assessment of dementia severity (CDR), assessment of cognitive impairment (MMSE), evaluation of the activities of daily living (IB), cerebral computed tomography (CT), cerebral magnetic resonance imaging (MRI), cerebral scintigraphy (SG), rheoencephalography (REG), cerebral multi-gated angiography (MUGA). To restore the blood supply, the method of transcatheter laser revascularization was applied;high-energy pulsed lasers were used for major intracranial arteries treatment, and low energy CW lasers—for distal intracranial branches treatment. Test Group: 459 (80.81%) patients had good clinical outcome, 91 (16.02%)—satisfactory clinical outcome, 18 (3.17%)—relatively satisfactory clinical outcome;relatively positive clinical outcome was not obtained in any case. Control Group: good clinical outcome was not obtained in any case;65 (17.20%) patients had satisfactory clinical outcome, 121 (23.26%)—relatively satisfactory clinical outcome, 192 (50.79%)—relatively positive clinical outcome. The method of transcatheter laser revascularization of cerebral vessels is a physiological, effective and low-invasive treatment for patients suffering from atherosclerosis of the brain. The obtained results last up to 10 years and more;it causes regression of mental and motor disorders, promotes regression of dementia and largely improves the patients’ quality of life;it has virtually no alternative—which makes the proposed method significantly different from conservative treatment methods.

关键词： Cerebrovascular Disease Cerebrovascular Insufficiency Cognitive Impairment Transcatheter Laser Revascularization Regeneration Ischemic Stroke

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Mortality of Amur tigers:The more things change,the more they stay the same

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Integrative Zoology 2015年第4期10卷 344-353页

作者： Hugh S.ROBINSON John M.GOODRICH Dale G.MIQUELLE Clayton S.MILLER ivan v.SERYODKIN Panthera New YorkNew YorkUSA Wildlife Conservation Society BronxNew YorkUSA Wildlife Biology Program College of Forestry and ConservationUniversity of MontanaMissoulaMontanaUSA Pacific Geographical Institute Far Eastern Branch of the Russian Academy of SciencesVladivostokRussia Far Eastern Federal University VladivostokRussia

Poaching as well as loss of habitat and prey are identified as causes of tiger population *** some studies have examined habitat requirements and prey availability,few studies have quantified cause-specific mortality of *** used cumulative incidence functions(CIFs)to quantify cause-specific mortality rates of tigers,expanding and refining earlier studies to assess the potential impact of a newly emerging *** quantify changes in tiger mortality over time,we re-examined data first collected by Goodrich et al.(2008;study period 1:1992–2004)as well as new telemetry data collected since January 2005(study period 2:2005–2012)using a total of 57 tigers(27 males and 30 females)monitored for an average of 747 days(range 26–4718 days).Across the entire study period(1992 to 2012)we found an estimated average annual survival rate of 0.75 for all tigers *** was the primary cause of mortality during both study periods,followed by suspected poaching,distemper and natural/unknown *** 2005,poaching mortality has remained relatively constant and,if combined with suspected poaching,may account for a loss of 17–19%of the population each *** distemper virus(CDv)may be an additive form of mortality to the population,currently accounting for an additional 5%.Despite this relatively new source of mortality,poaching remains the main threat to Amur tiger survival and,therefore,population growth.

关键词： canine distemper virus cause-specific mortality cumulative incidence function Panthera tigris altaica poaching

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The Use of Transcatheter Laser Exposure in the Treatment of Cerebral vessels Hypoplasia Accompanied by Migraine

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Journal of Behavioral and Brain Science 2014年第10期4卷 443-452页

作者： ivan v. Maksimovich Clinic of Cardiovascular Diseases Named after Most Holy John Tobolsky Moscow Russia

The research is dedicated to the possibility of restoring cerebral blood supply in patients with brain vessels hypoplasia accompanied by migraine. The research involved 67 patients aged 29 - 58 (average age 42) with severe migraine. The examination plan included laboratory diagnostics, assessment of dementia severity (CDR), assessment of cognitive impairment (MMSE), cerebral computed tomography (CT), cerebral magnetic resonance imaging (MRI), cerebral scintigraphy (SG), rheoencephalography (REG), cerebral multi-gated angiography (MUGA). Hypoplasia symptoms were detected in 56 (83.58%) patients. To improve cerebral blood supply, the method of transcateter laser revascularization by means of low-energy CW lasers was used. Good immediate angiographic outcome manifested in persistent improvement of the intracranial vascular bed and marked collateral vascularization was obtained in 53 (94.64%) patients. Good clinical outcome— almost complete regression of migraine and vestibular disorders—was obtained in 49 (87.50%) patients. Satisfactory clinical outcome—partial regression of migraine and vestibular disorders— was observed in 7 (12.50%) patients. The method of transcatheter laser revascularization of cerebral vessels is a physiological, effective and low-invasive treatment for patients suffering from cerebral vessels hypoplasia accompanied by migraine. This method has virtually no alternative;it stimulates natural angiogenesis causing collateral and capillary vascularization steadily improving the blood supply of the brain. The effect obtained after the treatment persists for a long time (9 years and longer), it causes regression of migraine, reduces mental disorders, and can improve the patients’ quality of life.

关键词： Headache Migraine Hypoplasia of Cerebral vessels Cerebrovascular Lesions Angiogenesis Transcatheter Laser Revascularization

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Contribution of functional KIR3DL1 to ankylosing spondylitis

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Cellular & Molecular Immunology 2010年第6期7卷 471-476页

作者： ivan v Zvyagin Ilgar Z Mamedov Olga v Britanova Dmitriy B Staroverov Evgeni L Nasonov Anna G Bochkova Anna v Chkalina Alexei A Kotlobay Dmitriy O Korostin Denis v Rebrikov Sergey Lukyanov Yuri B Lebedev Dmitriy M Chudakov Shemiakin-Ovchinnikov Institute of Bioorganic Chemistry RASMoscowRussia Institute of Rheumatology RAMSMoscowRussia DNA-Technology JSC MoscowRussia vavilov Institute of General Genetics MoscowRussia

Increasing evidence points to a role for killer immunoglobulin-like receptors(KIRs)in the development of autoimmune *** particular,a positive association of KIR3DS1(activating receptor)and a negative association of KIR3DL1(inhibitory receptor)alleles with ankylosing spondylitis(AS)have been reported by several ***,none of the studies analyzed these associations in the context of functionality of polymorphic *** better understand how the KIR3DL1/3DS1 genes determine susceptibility to AS,we analyzed the frequencies of alleles and genotypes encoding functional(KIR3DL1*F)and non-functional(KIR3DL1*004)*** genotyped 83 AS patients and 107 human leukocyte antigen(HLA)-B27-positive healthy controls from the Russian Caucasian population using a two-stage sequence-specific primer PCR,which distinguishes KIR3DS1,KIR3DL1*F and KIR3DL1*004 *** the patients carrying two functional KIR3DL1 alleles,those alleles were additionally genotyped to identify KIR3DL1*005 and KIR3DL1*007 alleles,which are functional but are expressed at low ***3DL1 was negatively associated with AS at the expense of KIR3DL1*F but not of KIR3DL1**** finding indicates that the inhibitory KIR3DL1 receptor protects against the development of AS and is not simply a passive counterpart of the segregating KIR3DS1 allele encoding the activating ***,analysis of genotype frequencies indicates that the presence of KIR3DS1 is a more important factor for AS susceptibility than the absence of KIR3DL1**** activation of either natural killer(NK)or T cells via the KIR3DS1 receptor can be one of the critical events in AS development,while the presence of the functional KIR3DL1 receptor has a protective ***,even individuals with a genotype that carried two inhibitory KIR3DL1 alleles expressed at high levels could develop AS.

关键词： ankylosing spondylitis autoimmune disease HLA-B27 KIR KIR3DL1 KIR3DS1 KIR3DL1*004 NK cell T cell

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Self-healable and Robust Film Based on Electroactive Polymer Brush as Electrode for Flexible Supercapacitor

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Chinese Journal of Polymer Science 2024年第8期42卷 1049-1059页

作者： Maria P.Sokolova vitaly K.vorobiov Nikolay N.Smirnov ivan S.Kuryndin Natalya v.Bobrova Michael A.Smirnov Institute of Macromolecular Compounds Russian Academy of SciencesBolshoy pr.31Saint Petersburg 199004Russia

The aim of this study was to develop self-healable and robust elect roconductive film based on polyaniline copolymer for application as electrode in flexible *** this purpose,the electroconductive polymer brushes(EPB)was *** synthesis of EPB is based on graft polymerizations of acrylamide(AAm)on poly(vinyl alcohol)(PvA)with formation of PvA-PAAm polymer brush and subsequent graft copolymerization of aniline and p-phenylenediamine on PvA-PAAm resulting in formation of EPB with electroconducting copoly(aniline-co-pphenylenediamine)(PAPh DA).It was found that the ratio between PvA and PAAm at the first stage greatly influence the electrochemical performance of the *** films were prepared by casting of EPB solution with subsequent *** of electrical current distribution through the film with AFM reveal more uniform distribution of PAPhDA in EPB in comparison with reference PvA-PAPhDA and PAAm-PAPhDA *** was demonstrated that mechanical cha racteristics and electrical conductivity values of films restore at large extent after curring and self-healing under optimal relative humidity level(58%).The flexile supercapacitor cell with EPB film electrodes demon strate specific capacitance 602 mF·cm^(-2)at the current density of 1 mA·cm^(-2)and retention 94%of initial capacitance after 5000 charge/discharge cycles.

关键词： Polymer brush Polyaniline Flexible supercapacitor Self-healing Electroconducting film

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