CC BY
9
ЦЕРВ1КАЛЬНИЙ РАК: ТРИГЕРН1 ФАКТОРИ Крутжова Е. I.
Актуальшсть вивчення пускових MexaHi3MiB цервкального канцерогенезу зумовлена високою частотою nanrnoMaBipycHoi' шфекцп серед молодих жшок (до 95%), онкогеншсть яко'' доведена на сьогодняшнш день. Пpoaнaлiзoвaнi джерела вказували на екcпpеciю TLR 3, 4, 7, 8, iNOS и NF-kB p 65 в епiтелioцитaх раку шийки матки, яка значно перевищувала aнaлoгiчнy в доброяюсних клiтинaх-нociях патломавирусу i здорових зразках (р<0,005). Сигнальный шлях TLR/NO залучений у патогенез цервкального раку i шдтагае вивченню. Наступний аспект даного огляду присвячений впливу фола™ на ДНК-метилювання i експреси пухлинного супресору бiлкa FHIT (Frigile histidine triad), який пригшчуе неоплазию шийки матки. Дocлiдження проводились на кйтинних лiнiях CaSki (HPV 16 позитивних) та С33А (HPV 16 негативних) жшок з CIN та карциномою. З'ясовано, що при шдвищенш тяжкосп ураження шийки матки вщповщно пiдвищyвaвcя piвень метилювання FHIT, тoдi як piвень фолату ер^оциив (RBC) знижувався. Тобто, дефiцит фола™ является одним iз ланчюпв цервкального канцерогенезу, що необхвдно враховувати клшщистам. Нaведенi також дaнi про капсидний бшок HPV-L1, як про маркер напруження локального цеpвiкaльнoгo iмyнiтетy на фош пaпiлoмaвipycнoi' шфекцп. Капсидний тест у куш з юльюсним HPV-навантаженням цеpвiкaльних зразюв може бути використаний як кртерш ефективност консервативно'' терапи CIN.
Ключов1 слова: цеpвiкaльний канцерогенез, толл-рецептори, синтетаза оксиду азоту, фолати, патломавирус.
Стаття нaдiйшлa 24.11.2017 р.
DOI 10.267254 / 2079-8334-2018-1-63-192-196 УДК 616.62 - 07
ЦЕРВИКАЛЬНЫЙ РАК: ТРИГГЕРНЫЕ ФАКТОРЫ Крутикова Э. И.
Актуальность изучения пусковых механизмов цервикального канцерогенеза обусловлена высокой частотой папилломавирусной инфекции среди молодых женщин (до 95%), онкогенность которой доказана на сегодняшний день. Проанализированные источники указывали, что экспрессия TLR 3, 4, 7, 8, iNOS и NF-kB p 65 в эпителиоцитах рака шейки матки значительно превышала таковую в доброкачественных клетках-носителях папилломавируса и здоровых образцах (р<0,005). Сигнальный путь TLR/NO вовлечён в патогенез цервикального рака и подлежит изучению. Другой аспект данного обзора посвящён влиянию фолатов на ДНК-метилирование и экспрессию опухолевого супрессора белка FHIT (Frigile histidine triad), который подавляет неоплазию шейки матки. Исследования проводились на клеточных линиях CaSki (HPV 16 позитивных) и С33А (HPV 16 негативных) у женщин с CIN и карциномой. Выяснено, что по мере повышения тяжести поражения шейки матки повышался уровень метилирования FHIT, тогда как уровень фолата эритроцитов (RBC) снижался. Таким образом, дефицит фолатов является одним из звеньев цервикального канцерогенеза, что необходимо учитывать клиницистам. Приведены также данные о капсидном белке HPV-L1, как о маркере напряжения локального цервикального иммунитета на фоне папилломавирусной инфекции. Капсидный тест в совокупности с количественной HPV-нагрузкой цервикальных образцов может использоваться как критерий эффективности консервативной терапии CIN.
Ключевые слова: цервикальный канцерогенез, толл-рецепторы, синтетаза оксида азота, фолаты, папиломавирус.
CURRENT MORPHOLOGICAL ACHIEVEMENTS IN UNDERSTANDING OF URINARY BLADDER PATHOLOGIES AND THEIR DETAILED ANALYSIS
e-mail: [email protected]
The paper presents the analysis of the current studies of the urinary bladder pathologies that occur in the clinical practice. The novel theories of the UB damage and the disorders of the urodynamics are impressive by its complexity and diversity. Understanding the causes and ways of the development of UB pathological processes is crucial in the correct and timely diagnosis and further therapeutic management, resulting in the improving of patient's quality of life. In particular, the analysis and study of some of the discoveries made by the scholars that form an understanding of the development of inflammatory, nonplastic and dysfunctional pathology of the bladder is presented. The paper highlighted the differential diagnosis of the inflammatory pseudotumor, pathogenesis of the overactive bladder, clinical and morphological picture of rare malignant tumors. The role of the advanced morphological studies in the diagnosis of the UB disease is emphasized.
Keywords: urinary bladder, urological pathology, overactive bladder, obstruction, inflammation, tumors, environmental
pollution.
Generally, the pathology of the urinary bladder (UB) is often accompanied by its dysfunction and/or different types of complications. We have analyzed and described some of the discoveries made by the scientists, which contribute to understanding of the development of urinary bladder pathology. Inflammation of the UB is the common problem with the developed diagnostic and treatment protocols; however, the inflammatory process may have specific features. In this respect the case of inflammatory pseudotumor of the UB has been reported. The patient complained of the abdominal pain and hematuria. The CT and MRI showed the thickening of the wall of the organ, and cystoscopy test detected a neoplasm. After its removal the histological study showed proliferation of myofibroblastic spindle cells and mixed cellular infiltration (lymphocytes, neutrophils and eosinophils). Scientists emphasize the importance of the detailed differential
diagnosis of this disease with the urothelial carcinoma, squamous cell carcinoma with manifestations of the secondary inflammation, leiomyoma, cystosomatosis, and tuberculosis, as the clinical picture of this pathology is ambiguous [1]. Being at any stage, the disorders of the mediate neuroregulation (CNS, spinal cord and peripheral ganglia) are accompanied by UB dysfunction. Therefore, injuries, chronic stresses, the imbalance between the neuropeptide receptors, inflammation or diseases of other origin affect the physiological innervation and coordination of the UB, resulting in the development of the overactive bladder syndrome. The authors emphasize on the importance of the expression of the kinin B1 and B2 receptors in the dysfunction of the detrusor traction and other urothelial neurotransmitters in the pathogenesis of this disease [2,3]. One of the first protective mechanisms, subjected to the impact of the stimuli in the urine, is the transitional epithelium, involving superficial sensory receptors (bradykinin receptors B1 and B2, p75NTR, TrkA, TrkB, NGF, BDNF, PACAP, purinoceptors, P2Y and P2X, adrenergic, transitory and cholinergic receptors, etc.) that participate in the afferent signaling [3-5]. The long-term impact of the various factors on the mucous membrane disintegrates the barriers, promotes the excessive expression of the receptors and activation of the neuronal hyperexcitability in the urothelium, as well as uncontrolled innervations of the smooth muscle cells of the detrusor with the subsequent development of reflex urination [2-4]. Medical practitioners are quite aware of this versatile problem, and for effective treatment it is necessary to establish a mechanism of its development in each individual case. Another problem related to violation of the urodynamic is the obstruction. The causes of such pathology are different: from the congenital to acquired with age [6]. In this way, disregarding the influence of other bodies on the bladder (prostate, urethra), the example is the consequences of the overactive UB, as changing the signal paths and excessive myogenic activity of the detrusor are complicated by its hypertrophy [5.7]. During the obstruction a mechanical stretching of the organ with deformation of detrusor myocytes, fibrosis and thickening of the wall occurs. It is also reported about the role of excess of estrogen and androgens, inducing the molecular mechanisms of damage. The histological and immunohistological examinations (ERa, PCNA and p-AKT) indicated the significant overgrowth of the smooth muscle fibers, a clear correlation between the excessive estrogen levels and expression of proliferating urothelial and fusiform cells of the UB and detrusor, along with the decrease in the thickness of the striate muscle layer of the proximal cross-muscular sphincter. It has been also demonstrated that induction of the estrogen is accompanied by hyperproliferation of the fibroblasts and destabilization of collagen III expression [6,7]. One of the most dangerous urological pathologies is the bladder cancer, which takes the 6th place in the United States by its incidence. Noteworthy, the risk for cancer in the male population is much higher than in females (7%:3%) [8]. Generally, the diagnosis of the type and malignancy of the tumor does not cause difficulties, but new statements with logical outcomes as for the difficulty of differentiation of neoplasia and its origin are reported quite often, with which medical professional almost never face worldwide. One of these discoveries is the case of extranodular marginal lymphoma associated with the urothelium. It is non-specific localization of this tumor in the UB, and not in the stomach, that led to additional examination (a bone marrow biopsy, endoscopic gastroduodenoscopy and CT diagnostics) and selection of the medical therapy [8]. Anaplastic large-cell lymphoma (T-cells) has the origin, similar to the primary tumor diseases with involvement of the UB, and the precise differentiation is possible only with the involvement of the panel of immunohistochemical antibodies [9.10]. It is the diffuse positive expression of CD30, ALK, EMA and vimentin and negative reaction from the AE1/AE3, CK7, CK20, CK5/6, P63, SMA, HMB-45, pan-Melan, S-100, Myo D1, synaptophysin, CD56, desmin, CD15, CD20, Pax-5, and CD3 that contributed to the confirmation of this rare pathology [10]. Usually, undifferentiated cancer without signs of keratinization and with lymphocytic infiltrate is specific to the nasopharynx; however, in cases of its localization in other organs it is considered as lymphoepithelioma-like carcinoma [11,12]. On the one hand, the histopathological manifestations of the tumor in the UB were characterized by muscular invasion, necrosis, inflammatory infiltration with predominance of lymphocytes, mitosis and scattered large epithelial cells, and on the other hand, by the signs, specific to non-invasive urothelial carcinoma. In such cases, the immunohistochemical differentiation of malignant lymphoma, small cell carcinoma and undifferentiated urothelial catcinoma with marked lymphocytic infiltration is carried out. The progress of such urological pathology is favorable; however, in conditions of poor identification the therapeutic management is ambiguous [12].
The cases of primary malignant melanoma with aggressive progress and mixed clinical symptoms are rarely reported [13]. This pathology deserves special attention of the practitioners, taking into account the complexity of the diagnosis and a precise differentiation between the primary lesion in this organ and metastatic highly malignant manifestation of melanoma of other organs (18% of affection), especially without previous clinical history [14-15]. Histological study of such neoplasms also impresses with its diversity of the morphological features without inner cytoplasmatic pigmentation of melanin, and it is immunohistochemical study, using the markers to Melan-A, S100, HMB45 and MITF, that is the most critical and informative in
confirmation of the diagnosis, as well as the p63, Desmin, Chromogranin, CD99 and Sytokeratin 34BE12 or AE1/AE3 to exclude other forms of carcinoma [14,16]. Interestingly, in the case of primary malignant melanoma the prevalence of local metastases in the pelvic organs reaches the high values and does not correspond to the nature of secondary metastatic manifestation [13-15].
The interesting cases of multiple malignancies that are developed in one person occur more often. The localization of multifocal primary tumors of different organs can be both within a single topographic area and at a considerable distance. In this way, UB neoplasia is often combined with cancer of the prostate, ureter, kidney, intestine, thyroid and mammary glands, stomach, lung, oral cavity, esophagus, larynx, etc. [17.18]. The case of double primary malignant neoplasm of UB in the form of invasive cancer and leiomyosarcoma is also reported [19]. Basically, the histogenesis of such tumors is specific to the affected organ, and the variants of immunohistochemical identification depend on the organs involved in the process, which is necessary to reject the dependence between their formations [17-19]. In addition, nowadays, a significant problem is the risk of UB cancer, associated with environmental pollution due to the development of the industry, urbanization and living conditions [20]. Currently, a clear etiological and pathological relationship between smoking, alcohol, chemical additives, and obesity is established; however, the authors critically emphasize the effect of aromatic amines and heavy metals [20-22].
Apparently, a danger of aromatic amines and salts of heavy metals is in their extreme toxicity and prevalence both in the environment, and possible contact with these substances while working in factories and plants. It has been discovered that the variable type of tumor depends on the type of metal, the boundaries of its toxicity and concentration [21-22]. It is known that the level of neoplasia of various organs, especially UB, is much higher in the locations with unfavorable environmental background. In addition to the evidenced role of environmental pollutants in cellular mutations and increasing incidence of UB tumors, they also contribute to the variability of differentiation and high aggressiveness of tumors, which greatly affects their diagnosis and treatment [20-23]. New reports regarding rare UB tumors are described and related to animals both in the simulated experimental study and in conditions of species habitat. Currently, enhanced understanding of pathogenesis of the UB tumors, their progression and treatment is the acute issue. That is why the scientists genetically simulate this disease in mice using specific chemical carcinogens that cause further display of different phenotypes or subtypes of cancer [24]. In turn, 4-hydroxybutyl (butyl) nitrosamine is used more often in simulation of tumors in rats with a further study of the effectiveness of chemical agents [25]. The case of fibrosarcoma of the UB in a cat greatly expands the idea on this issue [26]. The authors report, that this is the first documented case of such malignant tumor in these species, since the origin of the most neoplasia is epithelial (transitional cell carcinoma), and the other are represented by leiomyoma, leiomyosarcoma, fibroma, hemangioma, hemangiosarcoma and lymphoma with proliferation of atypical mesenchymal cells among the membranes. Such moderate mixed cell infiltration and numerous mitoses often correspond to malignant mesenchymal tumor. Taking into account the uniqueness of this histologic picture the immunohistochemical diagnostics with antibodies to vimentin +, S-100 (-), glial fibrillary acidic (-), proteinsmooth actin (-) and desmin (-) has been carried out, which confirmed the diagnosis. Noteworthy, the tumors of the UB of the epithelial origin have been found in buffaloes that was caused by the bracken fern (Pteridium spp.), which grows on pastures and considered as the toxicant, immunosuppressor, mutagen and carcinogen. It has been also established that the agents, which the bracken fern is rich in, can enhance the effect of affection with the type 2 papillomavirus (BPV-2). The complex of these agents activates the PDGF p and Calpain 3 receptors with subsequent uncontrolled proliferation of the epithelium and its conversion into a malignant tumor [27]. The findings of similar studies conducted with the same etiological and pathological factors quite reasonably indicated the specific histological and immunohistochemical features (chronic inflammation of tumor stroma) of the bovine UB tumors exactly of the mesenchymal origin. In both cases, a low metastatic potential was observed. Consequently, it can be stated that our present-day life is not devoid of single rare clinical mysteries. In most cases, for the purpose of comparative oncogenesis the scientists use the complex of molecular studies that contribute to the exact final diagnosis. It is the outcomes of the correct timely diagnosis and understanding of the mechanisms of pathological processes in the UB that will influence on the therapeutic management, improving the patient's quality of life.
With the recent rapid scientific and research progress the number of theories on the ways and options for the development of multiple diseases of the bladder has significantly increased. Numerous lesions of the organ astonish with its variability of the outcomes, diversity and complexity of the progress, although remain poorly understood to date. Therefore, understanding the etiology, pathogenesis and therapeutic management of the diseases of the urinary bladder is the important and promising issue for contemporary urology.
1. Rosado E, Pereira J, Corbusier F, Demeter P, Bali MA. Inflammatory Pseudotumor of the Urinary Bladder. J Radiol Case Rep. 2015; 9(1): 36-42. doi: 10.3941/jrcr.v9i1.2066.
2. Forner S, Andrade EL, Martini AC, Bento AF, Medeiros R, Koepp J et al. Effects of kinin B1 and B2 receptor antagonists on overactive urinary bladder syndrome induced by spinal cord injury in rats. Br J Pharmacol. 2012; 167(8): 1737-52. doi: 10.1111/j.1476-5381.2012.02127.x.
3. Girard BM, Tooke K, Vizzard MA. PACAP/ Receptor System in Urinary Bladder Dysfunction and Pelvic Pain Following Urinary Bladder Inflammation or Stress. Front Syst Neurosci. 2017; 11: 90. doi: 10.3389/fnsys.2017.00090.
4. Corcos J, Przydacz M, Campeau L, Witten J, Hickling D, Honeine C et al. CUA guideline on adult overactive bladder. Can Urol Assoc J. 2017; 11(5): E142-E173. doi: 10.5489/cuaj.4586.
5. De Groat WC, Griffiths D, Yoshimura N. Neural Control of the Lower Urinary Tract.Compr Physiol. 2015; 5(1): 327-96. doi: 10.1002/cphy.c130056
6. Boopathi E, Gomes C, Zderic SA, Malkowicz B, Chakrabarti R, Patel DP et al. Mechanical stretch upregulates proteins involved in Ca2+ sensitization in urinary bladder smooth muscle hypertrophy. Am J Physiol Cell Physiol. 2014 Sep 15; 307(6): C542-C553.
7. Lin W, Rahman NA, Lin J, Zhang H, Gou K, Yu W et al. Molecular Mechanisms of Bladder Outlet Obstruction in Transgenic Male Mice Overexpressing Aromatase (Cyp19a1). Am J Pathol. 2011 Mar; 178(3): 1233-44. doi: 10.1016/j.ajpath.2010.11.056.
8. Haddad-Lacle JE, Haddad CJ, Villas B. A rare urinary bladder tumour. BMJ Case Rep. 2014; 2014: bcr2013202994. doi: 10.1136/bcr-2013-202994.
9. Liang X, Wang Y,Zhang J, Cheng H, Wang J, Dang Y et al. Anaplastic lymphoma kinase-positive anaplastic large-cell lymphoma with involvement of the urinary bladder: a case report and review of literature. Onco Targets Ther. 2015; 8: 1143-47.
10. Kinney MC, Higgins RA, Medina EA. Anaplastic large cell lymphoma: twenty-five years of discovery. Arch Pathol Lab Med. 2011; 135 (1): 19-43.
11. Kozyrakis D, Petraki C, Prombonas I, Grigorakis A, Kanellis G. Lymphoepithelioma-like bladder cancer: clinicopathologic study of six cases. Int J Urol. 2011; 18: 731-34. doi: 10.1111/j.1442-2042.2011.02825.x.
12. Rosado E,Pereira J, Corbusier F, Demeter P, Bali M. Lymphoepithelioma-like carcinoma of the urinary bladder: a case report and review of the literature. BMC Res Notes. 2014; 7: 779. doi: 10.1186/1756-0500-7-779.
13. Venyo A.K. Melanoma of the Urinary Bladder: A Review of the Literature. Surg Res Pract. 2014; 2014: 605802. doi: 10.1155/2014/605802.
14. Meunier R, Pareek G, Amin A. Metastasis of Malignant Melanoma to Urinary Bladder: A Case Report and Review of the Literature.Case Rep Pathol. 2015: 173870. doi: 10.1155/2015/173870.
15. Truong H, Sundi D, Sopko N, Xing D, Lipson EJ, Bivalacqua TJ. A Case Report of Primary Recurrent Malignant Melanoma of the Urinary Bladder. Urol Case Rep. 2013 Dec; 1 (1): 2-4.
16. Theocharides C, Chatzopoulos K, Papanikolaou D, Siokas V, Amplianitis I, Papanikolaou A. Metastatic Melanoma to the Urinary Bladder of Ocular Origin Accompanied with Primary Cutaneous Melanoma: Diagnostic Challenge—A Report of a Case. Case Rep Pathol. 2017; 2017: 4818537. doi: 10.1155/2017/4818537.
17. Romaniuk A, Lyndin M, Smiyanov V, Sikora V, Rieznik A, Kuzenko Y et al. Primary multiple tumor with affection of the thyroid gland, uterus, urinary bladder, mammary gland and other organs. Pathol Res Pract. 2017 May; 213(5): 574-79. doi: 10.1016/j.prp.2017.01.003.
18. Romaniuk A, Lyndin M, Sikora V, Piddubnyi A, Budko H, Volkogon A. Multifocal primary tumour with lesions in prostate gland and urinary bladder: clinical case. Bangladesh Journal of Medical Science.2017; 16 (1): 161-5.
19. Viveka BK, Amirtham U, Kumar VM, Babu GK.A case of synchronous double malignancy: Invasive bladder cancer and Leiomyosarcoma of extremity and review of literature South Asian J Cancer. 2013 Jul-Sep; 2(3): 152.
20. Al-Zalabani A, Stewart KFJ, Wesselius A, Schols AMWJ, Zeegers MP. Modifiable risk factors for the prevention of bladder cancer: a systematic review of meta-analyses. Eur J Epidemiol. 2016; 31(9): 811-51.
21. Hung R, Boffetta P, Brennan P, Malaveille C, Hautefeuille A, Donato F et al. GST, NAT, SULT1A1, CYP1B1 genetic polymorphisms, interactions with environmental exposures and bladder cancer risk in a high-risk population. IntJCancer.2004;110: 598-604.
22. Rorbach-Dolata A, Marchewka Z, Piwowar A. The biochemical carcinogenesis of selected heavy metals in bladder cancer. Postepy Biochem. 2015; 61 (2): 176-82.
23. Letasiova S, Medved'ova A, Sovcikova A, Dusinska M,Volkovova K, Mosoiuet C et al. Bladder cancer, a review of the environmental risk factors. Environ Health. 2012; 11 (Suppl 1): S11. doi: 10.1186/1476-069X-11-S1-S11.
24. Lubet RA, Scheiman JM, Bode A, White J, Minasian L, Juliana MM et al. Prevention of Chemically-Induced Urinary Bladder Cancers by Naproxen: Protocols to Reduce Gastric Toxicity in Humans Do Not Alter Preventive Efficacy. Cancer Prev Res. 2015; 8(4): 296-302.
25. Kobayashi T, Owczarek TB, McKiernan JM, Abate-Shen C. Modeling bladder cancer in mice: opportunities and challenges. Nat Rev Cancer. 2015; 15(1): 42-54.
26. Capasso A, Raiano V, Sontuoso A, Olivero D, Greci V. Fibrosarcoma of the urinary bladder in a cat. JFMS Open Rep. 2015 Jan-Jun; 1(1): 2055116915585019. doi: 10.1177/2055116915585019.
27. Maiolino P, Ozkul A, Sepici-Dincel A, Roperto F, Yucel G, Russo V et al. Bovine Papillomavirus Type 2 Infection and Microscopic Patterns of Urothelial Tumors of the Urinary Bladder in Water Buffaloes. Biomed Res Int. 2013; 2013: 937918. doi: 10.1155/2013/937918.
СУЧАСН1 МОРФОЛОГ1ЧН1 ДОСЯГНЕННЯ В РОЗУМ1НН1 ПАТОЛОГ1Й СЕЧОВОГО М1ХУРА
Старченко I.I., Коробчанська А.Б., Винник Н.1., Коптев М.М., Совгиря С.М.
Стаття присвячена аналiзу сучасних дослщжень патологш сечового Mixypa (СМ), яю зус^чаються в
СОВРЕМЕННЫЕ МОРФОЛОГИЧЕСКИЕ ДОСТИЖЕНИЯ В ПОНИМАНИИ ПАТОЛОГИИ МОЧЕВОГО ПУЗЫРЯ Старченко И.И., Коробчанская А.Б., Винник Н.И., Коптев М.М., Совгиря С.М. Статья посвящена анализу современных исследований патологий мочевого пузыря (МП), которые встречаются в
практищ лкаря. Новi теорй ушкодження СМ та розладiв уродинамiки вражають своею складню™ та рiзноманiтнiстю. Розумiння причин i шлях1в розвитку патологiчних процесiв у СМ е важливим для коректно! та своечасно! дiагносгики, результати яко! вплинуть на лiкувальну тактику, що в подальшому вiдобразиться на покращенш якостi життя пацiента. Зокрема, в робот! проанайзовано та описано деяю знахщки, зробленi науковцями, яю формують розумiння розвитку запально!, непластично! та дисфункцюнально! патологii' сечового мiхура. У стата придiлена увага диференцiйнiй дiагностицi запально! псевдопухлини, патогенезу синдрому гiперактивного сечового мiхура, клiнiчнiй та морфолопчнш картинi рiдкiсних злояюсних новоутворень. Особливо тдкреслюеться роль сучасних морфолопчних дослiджень в дiагностицi хвороб СМ.
Ключовi слова: сечовий мiхур, уролопчна патологiя, гiперактивний мiхур, обструкцiя, запалення, пухлини, забруднення довюлля.
Стаття надшшла 12.11.2017 р.
практике врача. Новые теории повреждения МП и расстройств уродинамики поражают своей сложностью и разнообразием. Понимание причин и путей развития патологических процессов в МП является важным для корректной и своевременной диагностики, результаты которой повлияют на лечебную тактику, что в дальнейшем отразится на улучшении качества жизни пациента. В частности, в работе проанализированы и описаны некоторые находки, сделанные учеными, которые формируют понимание развития воспалительной, непластической и дисфункциональной патологии мочевого пузыря. В статье уделено внимание дифференциальной диагностике воспалительной псевдоопухоли, патогенеза синдрома гиперактивного мочевого пузыря, клинической и морфологической картине редких злокачественных новообразований. Особо подчеркивается роль современных морфологических исследований в диагностике болезней МП.
Ключевые слова: мочевой пузырь, урологическая патология, гиперактивный пузырь, обструкция, воспаление, опухоли, загрязнение среды.
DOI 10.267254 / 2079-8334-2018-1-63-196-201 УДК 577.1:620.3:546.655.3/4
Б1ОМ1МЕТИЧНА ТА АНТИОКСИДАНТНА АКТИВШСТЬ НАНОКР1СТАЛ1ЧНОГО
Д1ОКСИДУ ЦЕР1Ю
e-mail: [email protected]
Проведений аналiз науково! лтератури свiдчить про широке застосування в бюлогп та медицин наносполук дюксиду церш, якi проявляють бiомiметичну та антиоксидантну актившсть. Високий ступiнь бюсумюносп, низька токсичнiсть i каталiтична актившсть нанодисперсного дюксиду церш дозволяе розглядати його як перспективний нанобiоматерiал для бюмедичного застосування. Характеризуеться роль нанокристайчного дiоксиду церiю у захистi кйтин вiд оксидативного стресу. Киснева нестехiометрiя i пов'язана з нею можливють участ в окисно-вiдновних процесах у живш ттиш, а також здатшсть до ауторегенерацii забезпечуе високу ефектившсть застосування нанодисперсного дiоксиду церiю. Показано, що наноцерш може дiяти як мiметик супероксиддисмутази, каталази, деяких оксидаз, оксидоредуктаз та фосфатаз, а також здатний брати участь у знешкодженш активних форм штрогену.
Ключовi слова: наночастинки, дiоксид церiю, мiметики, оксидативний стрес, супероксиддисмутаза.
Робота е фрагментом НДР "Розробка бютехнологш створення нових препаратiв пробютитв, бiологiчно активних речовин та наноматерiалiв, "№ державно! реестраци 011би005824.
Церш (Се) - рщкоземельний елемент (порядковый номер 58), який належить до лантанощв. Ушкальтсть церш (електронна конф1гуращя 4f,5d16S2) обумовлена тим, що вш може юнувати у р1зних станах окиснення (Се3+ та Се4+), на вщм1ну вщ бшьшосп ¡нших рщкоземельних метал1в, яю переважно юнують у тривалентному сташ [14, 25]. Сам церш не мае бюлопчного значення в ф1зюлогп ссавщв, але розчинш сол1 Се3+ традицшно використовуються в бюмедичних щлях через !хню бактерюстатичну, бактерицидну, 1муномодулюючу та протипухлинну актившсть [Ошибка! Источник ссылки не найден., 7]. Нанодисперсний дюксид церш (НДЦ) широко застосовуеться в процесах мехашчного пол1рування, у розробщ антикорозшних покритпв для метал1в { сплашв та катал1затор1в окиснення дизельного палива [Ошибка! Источник ссылки не найден.]. Остантм часом спостер1гаеться вибух фундаментального та практичного штересу до розробки та застосування наночастинок як потенцшних кагалiгичних ангиоксидангiв у бюлогп та медициш [6, 8, 9, 11, 19, 37]. Бюлопчна актившсть наночастинок дюксиду церш визначаеться його кисневою нестехюметр1ею, яка залежить вщ розм1ру наночастинки { поверхневого лпанду [25]. Високий стушнь бюсумюносп, низька токсичтсть { каталггачна актившсть нанодисперсного дюксиду церш дозволяе розглядати його як перспективний наноматер1ал для бюмедичного застосування [Ошибка! Источник ссылки не найден., 15, 24, 29, 30, 32, 37]. Проте ниш вс можлив1 мехашзми його бюлопчно! активносп е маловивченими.
М1метики (грец. mimetes - наслщувач^ 1мггатори, под1бш) - речовини, схож на природш синтезоваш в оргашзм1 сполуки (мед1атори, ферменти, гормони), яю 1мпують дда шших субстанцш
