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Article: A case report of multi-step management of extracranial carotid artery aneurysm and carotid-cavernous fistula combination in patients.

Nurimanov, Chingiz / Makhambetov, Yerbol / Kaliyev, Assylbek / Akshulakov, Serik

2023 Volume 14, Page(s) 1120786

Abstract: Extracranial carotid artery aneurysms (ECAA) and carotid-cavernous fistulas (CCF) are rare arterial pathologies with severe complications and increased risk of mortality. The optimal treatment approach for this combined condition is a topic of debate ... ...

Abstract	Extracranial carotid artery aneurysms (ECAA) and carotid-cavernous fistulas (CCF) are rare arterial pathologies with severe complications and increased risk of mortality. The optimal treatment approach for this combined condition is a topic of debate among neurosurgeons and neuroradiologists, and a standardized treatment protocol has yet to be established. The aim of this case report was to demonstrate the management of a rare combination of ECAA and CCF in patients. The treatment strategy included a two-step procedure of endovascular embolization of CCF followed by dual antiplatelet therapy and endovascular stenting of an aneurysm. Control angiograms showed the exclusion of an aneurysm from the blood circulation and CCF symptoms were resolved.
Language	English
Publishing date	2023-04-06
Publishing country	Switzerland
Document type	Case Reports
ZDB-ID	2564214-5
ISSN	1664-2295
ISSN	1664-2295
DOI	10.3389/fneur.2023.1120786
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Article ; Online: An Uncommon Case of Moyamoya Syndrome Is Accompanied by an Arteriovenous Malformation with the Involvement of Dural Arteries.

Nurimanov, Chingiz / Mammadinova, Iroda / Makhambetov, Yerbol / Akshulakov, Serik

International journal of molecular sciences

2023 Volume 24, Issue 6

Abstract: 1) Background: This report describes the surgical management of a case of concurrent AVM with the involvement of dural arteries and moyamoya syndrome. Given the infrequency of this combination, there is currently no established management strategy ... ...

Abstract	(1) Background: This report describes the surgical management of a case of concurrent AVM with the involvement of dural arteries and moyamoya syndrome. Given the infrequency of this combination, there is currently no established management strategy available. (2) Case Description: A 49-year-old male patient with multiple symptoms including headaches, tinnitus, and visual impairment diagnosed with the coexistence of an arteriovenous malformation with the involvement of dural arteries and moyamoya syndrome was admitted to the national tertiary hospital. The patient underwent surgical management through embolization of the AVM from the afferents of the dural arteries, which has resulted in positive clinical outcomes. However, this approach may not be suitable for all cases, and a multidisciplinary team approach may be required to develop an individualized treatment strategy. (3) Conclusion: The contradictory nature of the treatment approaches in cases of combined AVM with the involvement of dural arteries and MMD highlights the complex nature of this condition and the need for further research to identify the most effective treatment strategies.
MeSH term(s)	Male ; Humans ; Middle Aged ; Moyamoya Disease/complications ; Moyamoya Disease/diagnosis ; Intracranial Arteriovenous Malformations/complications ; Intracranial Arteriovenous Malformations/diagnostic imaging ; Arteries ; Treatment Outcome
Language	English
Publishing date	2023-03-21
Publishing country	Switzerland
Document type	Case Reports
ZDB-ID	2019364-6
ISSN	1422-0067 ; 1422-0067 ; 1661-6596
ISSN (online)	1422-0067
ISSN	1422-0067 ; 1661-6596
DOI	10.3390/ijms24065911
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Article ; Online: Challenges in Neurosurgery During the COVID-19 Pandemic: The Experience of Kazakhstan.

Menlibayeva, Karashash / Babi, Aisha / Makhambetov, Yerbol / Akshulakov, Serik

World neurosurgery

2022 Volume 161, Page(s) e376–e383

Abstract: Background: The practice of neurosurgery has been profoundly affected by the coronavirus disease 2019 (COVID-19) pandemic in Kazakhstan. Many elective surgeries were postponed or canceled, which resulted in difficulties in hospitalization. In the ... ...

Abstract	Background: The practice of neurosurgery has been profoundly affected by the coronavirus disease 2019 (COVID-19) pandemic in Kazakhstan. Many elective surgeries were postponed or canceled, which resulted in difficulties in hospitalization. In the present study, we aimed to describe the effects of COVID-19 on neurosurgical practice and to determine whether a discrepancy was present in the effects between metropolises and regional cities in Kazakhstan. Methods: We performed an electronic internet-based survey among Kazakhstan's neurosurgeons using the virtual snowball sampling method. The invitation link to complete the questionnaire was sent to neurosurgeons through personal and corporate electronic mail and social networks. The data were analyzed using Excel and Stata. Results: A total of 43 neurosurgeons completed the survey. The distribution of regional and urban respondents was almost equal. The male neurosurgeons outnumbered the female neurosurgeons (93.02% vs. 6.98%). A decrease in consultations (65.34% ± 28.24%) and surgeries (56.55% ± 26.34%) had been observed by all neurosurgeons, regardless of city type. However, the proportion of neurosurgeons who had attended online educational courses during the pandemic was significantly higher (P = 0.001) for the surgeons from major cities (68.18%) compared with the surgeons from smaller cities (19.05%). The regional neurosurgeons tended to perform urgent surgeries on COVID-19-positive patients 3 times more often than had the metropolitan neurosurgeons (P < 0.001). Conclusions: The true effect of the pandemic remains unknown for Kazakhstan. A discrepancy between the metropolitan and regional cities was found in the present study. Efforts are required and relevant guidelines must be developed to ensure that the neurosurgical treatment of various conditions continues to be available during health emergencies and that the disparities are addressed.
MeSH term(s)	COVID-19 ; Female ; Humans ; Kazakhstan/epidemiology ; Male ; Neurosurgery ; Neurosurgical Procedures ; Pandemics
Language	English
Publishing date	2022-02-08
Publishing country	United States
Document type	Journal Article
ZDB-ID	2534351-8
ISSN	1878-8769 ; 1878-8750
ISSN (online)	1878-8769
ISSN	1878-8750
DOI	10.1016/j.wneu.2022.02.011
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Article ; Conference proceedings: Effect of Endovascular Embolization on Seizure Presentation in Patients with Medium and High-Grade B

Makhambetov, Yerbol / Nurimanov, Chingiz / Kaliyev, Assylbek

The Arab Journal of Interventional Radiology

2023 Volume 07, Issue S 01

Event/congress	PAIRS 2023 Annual Congress, Grand Hyatt Hotel, Dubai, UAE, 2023-02-11
Language	English
Publishing date	2023-02-01
Publisher	Thieme Medical and Scientific Publishers Pvt. Ltd.
Publishing place	Stuttgart ; New York
Document type	Article ; Conference proceedings
ISSN	2542-7083 ; 2542-7075
ISSN (online)	2542-7083
ISSN	2542-7075
DOI	10.1055/s-0043-1763325
Database	Thieme publisher's database

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Article: Long-Term Outcomes of Endovascular Embolization in a Vein of Galen Aneurysmal Malformation: A Single-Center Experience.

Nurimanov, Chingiz / Makhambetov, Yerbol / Menlibayeva, Karashash / Nurakay, Nurtay / Makhambetov, Nursultan / Zholdybayeva, Elena / Akshulakov, Serik

Diagnostics (Basel, Switzerland)

2023 Volume 13, Issue 16

Abstract: Background: A vein of Galen aneurysmal malformation (VGAM) is a rare congenital cerebral vascular condition with a high mortality rate if left untreated. This study describes the long-term outcomes of patients with VGAM, who were treated with ... ...

Abstract	Background: A vein of Galen aneurysmal malformation (VGAM) is a rare congenital cerebral vascular condition with a high mortality rate if left untreated. This study describes the long-term outcomes of patients with VGAM, who were treated with endovascular embolization. Methods: This retrospective analysis focused on VGAM patients who underwent one or more endovascular embolization sessions between January 2008 and December 2022. The study included newborns and children under 18 years. Data encompassed clinical and demographic characteristics, types of endovascular embolization, treatment complications, mortality rates, and long-term outcomes. Results: Out of 22 VGAM cases, the majority were boys (86.36%), and the average age of the participants was 38 months, ranging from 25 days to 17 years. Endovascular embolization using liquid embolizing agents was the most common intervention (50%), and around 73% of patients underwent multiple sessions. Some patients underwent ventriculoperitoneal shunting (VPS) due to persistent hydrocephalus. In long-term outcomes, four patients (18.2%) showed developmental delays, and 16 patients (72.7%) had a positive outcome. Conclusions: Combining endovascular therapy with a comprehensive management strategy significantly reduces mortality rates and improves the possibility of normal neurological development in patients.
Language	English
Publishing date	2023-08-18
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2662336-5
ISSN	2075-4418
ISSN	2075-4418
DOI	10.3390/diagnostics13162704
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Article ; Online: Risk factors for aneurysm rupture among Kazakhs: findings from a national tertiary.

Medetov, Yerkin / Babi, Aisha / Makhambetov, Yerbol / Menlibayeva, Karashash / Bex, Torekhan / Kaliyev, Assylbek / Akshulakov, Serik

BMC neurology

2022 Volume 22, Issue 1, Page(s) 357

Abstract: Background: Rupture of intracranial aneurysms (RIA) leads to subarachnoid hemorrhage (SAH) with severe consequences. Although risks for RIA are established, the results vary between ethnic groups and were never studied in Kazakhstan. This study aimed to ...

Abstract	Background: Rupture of intracranial aneurysms (RIA) leads to subarachnoid hemorrhage (SAH) with severe consequences. Although risks for RIA are established, the results vary between ethnic groups and were never studied in Kazakhstan. This study aimed to establish the risk factors of RIA in the Kazakh population. METHODS: Retrospective analysis of 762 patients with single IAs, who attended the neurosurgical center from 2008 until 2018, was conducted. Demographic characteristics, such as age, sex, smoking status, and hypertension were considered. Descriptive and bivariate analyses were performed. A multivariable logistic regression model was built to identify factors correlated with RIA. Results: The mean age of participants was 48.49 ± 0.44 years old. The majority (68.37%) of IAs have ruptured. Of the ruptured aneurysms, 43.76% were < 6 mm, and 38.39% were located on the anterior cerebral and anterior communicating arteries (ACA). Logistic regression model indicates younger age group (16-40 years), smoking, having stage 3 hypertension, smaller IA size and its location on ACA increase the odds of rupture. Conclusions: This study has revealed that younger, smoking patients with stage 3 arterial hypertension are at higher risk for RIA. Small aneurysms (< 6 mm) and location on ACA had increased odds of rupture, while larger aneurysms on internal carotid arteries had lower odds.
MeSH term(s)	Adolescent ; Adult ; Aneurysm, Ruptured/epidemiology ; Aneurysm, Ruptured/surgery ; China ; Humans ; Hypertension/complications ; Hypertension/epidemiology ; Intracranial Aneurysm/epidemiology ; Intracranial Aneurysm/surgery ; Middle Aged ; Retrospective Studies ; Risk Factors ; Young Adult
Language	English
Publishing date	2022-09-20
Publishing country	England
Document type	Journal Article
ZDB-ID	2041347-6
ISSN	1471-2377 ; 1471-2377
ISSN (online)	1471-2377
ISSN	1471-2377
DOI	10.1186/s12883-022-02892-y
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Article ; Online: Correction: Risk factors for aneurysm rupture among Kazakhs: findings from a national tertiary hospital.

Medetov, Yerkin / Babi, Aisha / Makhambetov, Yerbol / Menlibayeva, Karashash / Bex, Torekhan / Kaliyev, Assylbek / Akshulakov, Serik

BMC neurology

2022 Volume 22, Issue 1, Page(s) 374

Language	English
Publishing date	2022-09-29
Publishing country	England
Document type	Published Erratum
ZDB-ID	2041347-6
ISSN	1471-2377 ; 1471-2377
ISSN (online)	1471-2377
ISSN	1471-2377
DOI	10.1186/s12883-022-02901-0
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Article ; Online: Whole-Exome Sequencing Reveals Pathogenic SIRT1 Variant in Brain Arteriovenous Malformation: A Case Report.

Mukhtarova, Kymbat / Zholdybayeva, Elena / Kairov, Ulykbek / Akhmetollayev, Ilyas / Nurimanov, Chingiz / Kulmirzayev, Marat / Makhambetov, Yerbol / Ramankulov, Yerlan

Genes

2022 Volume 13, Issue 10

Abstract: Arteriovenous malformations of the brain (bAVMs) are plexuses of pathological arteries and veins that lack a normal capillary system between them. Intracranial hemorrhage (hemorrhagic stroke) is the most frequent clinical manifestation of AVM, leading to ...

Abstract	Arteriovenous malformations of the brain (bAVMs) are plexuses of pathological arteries and veins that lack a normal capillary system between them. Intracranial hemorrhage (hemorrhagic stroke) is the most frequent clinical manifestation of AVM, leading to lethal outcomes that are especially high among children and young people. Recently, high-throughput genome sequencing methods have made a notable contribution to the research progress in this subject. In particular, whole-exome sequencing (WES) methods allow the identification of novel mutations. However, the genetic mechanism causing AVM is still unclear. Therefore, the aim of this study was to investigate the potential genetic mechanism underlying AVM. We analyzed the WES data of blood and tissue samples of a 30-year-old Central Asian male diagnosed with AVM. We identified 54 polymorphisms in 43 genes. After in-silica overrepresentation enrichment analysis of the polymorphisms, the SIRT1 gene variant (g.67884831C>T) indicated a possible molecular mechanism of bAVM. Further studies are required to evaluate the functional impact of SIRT1 g.67884831C>T, which may warrant further replication and biological investigations related to sporadic bAVM.
MeSH term(s)	Child ; Humans ; Male ; Adolescent ; Adult ; Exome Sequencing ; Sirtuin 1/genetics ; Intracranial Arteriovenous Malformations/genetics ; Intracranial Arteriovenous Malformations/pathology ; Brain/pathology ; Silicon Dioxide
Chemical Substances	Sirtuin 1 (EC 3.5.1.-) ; Silicon Dioxide (7631-86-9) ; SIRT1 protein, human (EC 3.5.1.-)
Language	English
Publishing date	2022-09-21
Publishing country	Switzerland
Document type	Case Reports ; Research Support, Non-U.S. Gov't
ZDB-ID	2527218-4
ISSN	2073-4425 ; 2073-4425
ISSN (online)	2073-4425
ISSN	2073-4425
DOI	10.3390/genes13101689
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Article ; Online: Reaching the horizon and looking beyond: neurosurgery education in Kazakhstan.

Akshulakov, Serik / Makhambetov, Yerbol / Bralov, Askhat / Pazylbekov, Talgat / Tursynov, Nurtas / Menlibayeva, Karashash

Neurosurgical focus

2020 Volume 48, Issue 3, Page(s) E9

Abstract: Neurosurgery education in Kazakhstan has 55 years of history. The first neurosurgery department was established in 1964 in the city of Almaty, South Kazakhstan (the former capital of Kazakhstan). The department was headed by the pioneer of Kazakhstani ... ...

Abstract	Neurosurgery education in Kazakhstan has 55 years of history. The first neurosurgery department was established in 1964 in the city of Almaty, South Kazakhstan (the former capital of Kazakhstan). The department was headed by the pioneer of Kazakhstani neurosurgeons, Prof. Yevgeniya Azarova. A new neurosurgery education system was adopted after a while. To date, 4 medical universities and 1 neurosurgical center in Kazakhstan have a neurosurgery department that prepares around 10 neurosurgeons annually. The country's populations are currently served by more than 300 neurosurgeons. However, isolated regions lack neurosurgical services and a specialized medical workforce. Urbanization results in inequality of receiving medical care among rural and regional inhabitants.To develop and strengthen the neurosurgery services, the National Center for Neurosurgery was opened in the heart of the country. The center has placed great importance on the development of neurosurgery and neurosurgical education in Kazakhstan. The World Federation of Neurosurgical Societies, European Association of Neurosurgical Societies, Asian Congress of Neurosurgeons, and International Society for Pediatric Neurosurgery have held many international meaningful events on neurosurgery at the center. Opened in 2008, the neurosurgery center has prepared 41 neurosurgeons in the residency program. This article seeks to provide readers with an understanding of the state of neurosurgery education in Kazakhstan and its development history.
MeSH term(s)	Humans ; Internship and Residency/statistics & numerical data ; Kazakhstan ; Neurosurgeons/education ; Neurosurgery/education ; Neurosurgical Procedures/education ; Societies, Medical/statistics & numerical data
Language	English
Publishing date	2020-02-19
Publishing country	United States
Document type	Journal Article
ZDB-ID	2026589-X
ISSN	1092-0684 ; 1092-0684
ISSN (online)	1092-0684
ISSN	1092-0684
DOI	10.3171/2019.12.FOCUS19790
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Article ; Online: Management of giant internal carotid aneurysm by extracranial-intracranial bypass and flow diverter stent.

Kaliyev, Assylbek / Makhambetov, Yerbol / Medetov, Yerkin / Kulmirzayev, Marat / Dusembayev, Serik / Nurimanov, Chingiz / Kunakbayev, Baurzhan / Akshulakov, Serik

British journal of neurosurgery

2021 Volume 37, Issue 6, Page(s) 1893–1897

Abstract: Flow diverter stents have become the standard approach to managing intracranial aneurysms; however, in some cases of complex, wide-necked aneurysms, poor outcomes due to stent occlusion have been reported. We report the case of a giant internal carotid ... ...

Abstract	Flow diverter stents have become the standard approach to managing intracranial aneurysms; however, in some cases of complex, wide-necked aneurysms, poor outcomes due to stent occlusion have been reported. We report the case of a giant internal carotid artery aneurysm treated by high-flow extracranial-intracranial (EC-IC) bypass with flow diverter deployment. Seven months post-operatively, radiographic imaging demonstrated occlusion of the stent and parent artery, with further ischemic events prevented by collateral flow from the high flow bypass. This case demonstrates the continued utility of EC-IC bypass in the endovascular era, especially as a rescue tool in cases of delayed stent occlusion.
MeSH term(s)	Humans ; Carotid Artery, Internal/diagnostic imaging ; Carotid Artery, Internal/surgery ; Intracranial Aneurysm/diagnostic imaging ; Intracranial Aneurysm/surgery ; Carotid Artery Diseases/diagnostic imaging ; Carotid Artery Diseases/surgery ; Neurosurgical Procedures/methods ; Stents ; Treatment Outcome
Language	English
Publishing date	2021-07-08
Publishing country	England
Document type	Case Reports ; Journal Article
ZDB-ID	639029-8
ISSN	1360-046X ; 0268-8697
ISSN (online)	1360-046X
ISSN	0268-8697
DOI	10.1080/02688697.2021.1947974
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