Células sésseis

As Células sésseis são componentes de microrganismos que se aderem a uma matriz e resultam em uma comunidade bacteriana fisiologicamente integrada e aderida à superfície chamada de biofilme. Sabe-se que há intensa formação de biofilme em áreas de contato entre ar e água, devido à movimentação dos líquidos e do atrito mecânico, que possibilita o desprendimento de fragmentos deste biofilme para colonizarem outros ambientes.[1][2][3][4]

Dentro deste microambiente chamado biofilme, forças eletrostáticas e os nutrientes disponíveis recrutam os primeiros microrganismos, e em seguida essas células se multiplicam e produzem exopolissacarídeos, alterando assim as condições iniciais do meio, e desta forma sinalizam para a migração de outros microrganismos.[5]

Nesse microambiente podem-se destacar duas porções facilmente distinguíveis: o interior do biofilme, em que as condições são facilmente controladas, e o exterior deste, em que o controle nutricional é dificultado. Sabendo que há células nas duas porções, denominam-se células sésseis aquelas que se localizam na porção interna, e células planctônicas as exteriorizadas flutuantes.[6]

As células sésseis expressam genes profundamente diferentes daqueles expressos pelas células planctônicas, o que justifica parcialmente o enorme valor de sobrevivência da formação de biofilme.[1]

As células sésseis ganham importância à medida que, devido ao microambiente controlado que as protegem de agentes agressores externos como medicamentos, resultam na razão da resistência inata à antimicrobianos.[6][7]


Referências

  1. ↑ a b Moselio Schaechter, Encyplodia of Microbiology 3rd Edition, 2009
  2. ↑ OLIVEIRA, MAÍRA MACIEL MATTOS DE, BRUGNERA, DANILO FLORISVALDOPICCOLI, ROBERTA HILSDORF. Microbial biofilms in the food industry: a review. In:, 2010.
  3. ↑ Lawrence, JR, Korber, DR, Hoyle, BD, Costerton, JW, Caldwell, DE ( 1991 ) Seccionamento ótico de biofilmes microbianos . J. Bacteriol. 173 , 6558-6567.
  4. ↑ Harrison, J. J., Ceri, H. , Stremick, C. and Turner, R. J. (2004), Differences in biofilm and planktonic cell mediated reduction of metalloid oxyanions. FEMS Microbiology Letters, 235: 357-362.
  5. ↑ Busscher, H. J., & Van Der, H. C. (1997). Physico-Chemical Interactions in Initial Microbial Adhesion and Relevance for Biofilm Formation. Advances in Dental Research, 11(1), 24–32
  6. ↑ a b COSTA, J.C.M, ESPESCHIT, I.FPIERI, F.A et al. Perfil de sensibilidade de células sésseis e planctônicas de Escherichia coli a antimicrobianos usados no tratamento da mastite bovina. Arq. Bras. Med. Vet. Zootec, v. 66, n. 1, p. 129-136, 2014.
  7. ↑ Angélica Dalla Costa, Karine & Ferenz, Mariane & Silveira, Sheila & Millezi, Alessandra. (2017). FORMAÇÃO DE BIOFILMES BACTERIANOS EM DIFERENTES SUPERFÍCIES DE INDÚSTRIAS DE ALIMENTOS. Revista do Instituto de Laticínios Cândido Tostes. 71. 75. 10.14295/2238-6416.v71i2.512.

Read other articles:

Tunjuk Satu Bintang

Tunjuk Satu BintangPembuatMultivision PlusPemeranVonny CorneliaDidi RiyadiBaim WongDeasy NoviantiOkan CorneliusRaffi AhmadNegara asalIndonesiaJmlh. episode20ProduksiProduser eksekutifGobind PunjabiProduserRaam PunjabiLokasi produksiJakartaDurasi1 JamRilis asliJaringanSCTVFormat audioStereoDolby Digital 5.1RilisRabu, 8 Mei –Rabu, 18 September 2002 Tunjuk Satu Bintang merupakan sebuah sinetron yang ditayangkan di SCTV pada tahun 2002. Pemain utama di sinetron ini ialah Didi Riyadi, Vonn...

 

Chevrolet K5 Blazer

Chevrolet K5 BlazerInformasiProdusenGeneral MotorsMasa produksi1969–1994PerakitanJanesville, WisconsinKesamaanChevrolet SuburbanChevrolet C/KBodi & rangkaKelasSUV ukuran penuhBentuk kerangka2-pintu SUVTata letakMesin depan, Penggerak roda belakang / four-wheel driveKronologiPenerusChevrolet TahoeGMC Yukon K5 Blazer merupakan versi SUV ukuran penuh terkecil dari keluarga General Motors C/K Trucks. Dipasarkan pertama kali oleh Chevrolet pada tahun 1969, Pada tahun 1995, versi ukuran ...

 

Amanremu

Amanremu Sebuah amanremu, sebelum tahun 1918 Jenis Pedang, Klewang Negara asal Indonesia Sejarah pemakaian Digunakan oleh Suku Batak, Suku Gayo Spesifikasi Panjang 70-80 cm Tipe pedang Satu mata, flat grind Tipe gagang Kayu, tanduk, lembaran logam Jenis sarung Kayu, tanduk, lembaran logam, rotan Amanremu (juga disebut Parang Amanremu, Amanremoe, Amaremoe, Meremoe, Mermo, Semaremoe, Samaremoe atau Samaremu)[1] adalah senjata sejenis pedang dari Sumatera Utara,...

Milly & Mamet: Ini Bukan Cinta & Rangga

Milly & Mamet: Ini Bukan Cinta & RanggaPoster filmSutradaraErnest PrakasaProduser Chand Parwez Servia Mira Lesmana Fiaz Servia SkenarioErnest PrakasaMeira AnastasiaPemeran Sissy Priscillia Dennis Adhiswara Ernest Prakasa Julie Estelle Yoshi Sudarso Dian Sastrowardoyo Titi Kamal Adinia Wirasti Penata musikAndhika TriyadiSinematograferRoby HerbiPenyuntingRyan PurwokoPerusahaanproduksi Starvision Plus Miles Films HOOQ Originals Tanggal rilis20 Desember 2018Durasi101 menitNegaraIndo...

 

ليبرالية خضراء

جزء من سلسلة مقالات حولالليبرالية التاريخ تاريخ الفكر الليبرالي مساهمات في النظرية الليبرالية تاريخ الليبرالية الكلاسيكية الأفكار ليبرالية سياسية ليبرالية اقتصادية حرية سياسية ديمقراطية رأسمالية تربية ديمقراطية فردانية اقتصاد عدم التدخل ديمقراطية ليبرالية الحياد ال...

 

فاصمة منصهرة قابلة لإعادة الضبط

الصمامات القابلة لإعادة الضبط - أجهزة PolySwitch الفاصمة المنصهرة القابلة لإعادة الضبط وتُعرف أيضًا باسم الصمامات القابلة لإعادة الضبط (PPTC) هو مكون إلكتروني سلبي يستخدم للحماية من أعطال التيار الزائد في الدوائر الإلكترونية. يُعرف الجهاز أيضًا بالإنجليزيّة باسم multifuse أو polyfuse أ�...

Réseau Saint-Jacques

Cet article est une ébauche concernant la Résistance française et le renseignement. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Réseau Saint-JacquesPrésentationType Mouvement de résistancePartie de Résistance intérieure française, Réseau Orion (mai 1941)Fondation Août 1940LocalisationLocalisation  Francemodifier - modifier le code - modifier Wikidata Le Réseau Saint-Jacques est un réseau de...

 

List of countries by population in 1600

Historical Demographics Altar of Domitius Ahenobarbus Articles Demographic history Historical demography World population estimates List of Countries by Population 1500 1600 1700 This is a list of countries by population in 1600. Estimate numbers are from the beginning of the year, and exact population figures are for countries that held a census on various dates in that year. The bulk of these numbers are sourced from Alexander V. Avakov's Two Thousand Years of Economic Statistics, Volume 1...

 

1000 Ways to Die

American docufiction anthology television series This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: 1000 Ways to Die – news · newspapers · books · scholar · JSTOR (August 2019) (Learn how and when to remove this message) 1000 Ways to DieGenreDocufictionBlack comedyHorrorAnthologyWritten byTom McMahonH.A. Arnars...

Онтарио (озеро)

У этого термина существуют и другие значения, см. Онтарио (значения). Озеро Онтариоангл. Lake Ontario, фр. Lac Ontario Онтарио в системе Великих озёр Морфометрия Абсолютная высота74[1] м Размеры311 × 85[1] км Площадь19 000[1] км² Объём1638[2] км³ Береговая ли...

 

1900年美國總統選舉

1900年美國總統選舉 ← 1896 1900年11月6日 1904 → 447張選舉人票獲勝需224張選舉人票投票率73.2%[1] ▼ 6.1 %   获提名人 威廉·麥金利 威廉·詹寧斯·布賴恩 政党 共和黨 民主党 家鄉州 俄亥俄州 內布拉斯加州 竞选搭档 西奧多·羅斯福 阿德萊·史蒂文森一世 选举人票 292 155 胜出州/省 28 17 民選得票 7,228,864 6,370,932 得票率 51.6% 45.5% 總統選舉結果地圖，紅色代表�...

 

Timeline of New Zealand's links with Antarctica

A map of the Ross Dependency, the part of Antarctica claimed by New Zealand. Part of a series on the History of New Zealand Timeline General topics Antarctic Capital city Economic Education Environment Māori Military Natural Political Voting Postal Rail transport Prior to 1800 Natural history Archaeology 19th century European settlers New Zealand Company Musket Wars Treaty of Waitangi British colony New Zealand Wars Land confiscations The Vogel Era Temperance movement Women's suffrage Stage...

Australia en los Juegos Olímpicos de París 2024

Australia en los Juegos Olímpicos Bandera de AustraliaCódigo COI AUSCON Comité Olímpico Australiano(pág. web)Juegos Olímpicos de París 2024Historia olímpicaJuegos de verano 1896 • 1900 • 1904 • 1920 • 1924 • 1928 • 1932 • 1936 • 1948 • 1952 • 1956 • 1960 • 1964 • 1968 • 1972 • 1976 • 1980 • 1984 ...

 

Communication Univ of China station

Beijing Subway station Communication Univ. of China[1]传媒大学Westbound platform after the through operation to Line 1 in 2021General informationOther namesDingfuzhuang station (initial plan), Broadcasting Institute station (2003–2007)[2]LocationChaoyang District, BeijingChinaOperated byBeijing Mass Transit Railway Operation Corporation LimitedLine(s)     Batong line (through operation to Line 1)Platforms2 (2 side platforms)Tracks2Constructio...

 

Kevin Van De Wege

American firefighter and politician from Washington Kevin Van De WegeMember of the Washington Senatefrom the 24th districtIncumbentAssumed office January 9, 2017Preceded byJim HargroveMember of the Washington House of Representativesfrom the 24th districtIn officeJanuary 8, 2007 – January 9, 2017Preceded byJim BuckSucceeded byMike Chapman Personal detailsBornKevin Wayne Van De Wege (1974-10-02) October 2, 1974 (age 49)Seattle, Washington, U.S.Political partyDem...

Thomas Buchanan (Unionist politician)

Thomas BuchananMLABuchanan in 2021Member of the Northern Ireland Assemblyfor West TyroneIncumbentAssumed office 26 November 2003Preceded byOliver Gibson Personal detailsBorn (1963-06-30) 30 June 1963 (age 60)Drumquin, County Tyrone, Northern IrelandNationalityBritishPolitical partyDemocratic Unionist PartyOccupationContractor Thomas Buchanan MLA (born 30 July 1963) is a Democratic Unionist Party (DUP) politician, serving as a Member of the Northern Ireland Assembly (MLA) for West Ty...

 

Daigunder

Daigunder爆闘宣言ダイガンダー(Bakutō Sengen Daigandā)GenreMecha, Aksi, Komedi Seri animeSutradaraHiroyuki YanoStudioBrains BasePelisensi Animation International Ltd.SaluranasliAnimax (2002)TV Tokyo (2002)Saluran bahasa Inggris JetixTayang 5 April 2002 – 27 Desember 2002Episode39  Portal anime dan manga Daigunder (爆闘宣言ダイガンダーcode: ja is deprecated , Bakutō Sengen Daigandā) adalah serial anime tentang manusia yang menggunakan robot dalam turnamen. Dib...

 

United Principalities of Moldavia and Wallachia

1859–1881 personal union and early form of the modern Romanian state United Principalities of Moldavia and Wallachia (1859–1862)Romanian United Principalities (1862–1866)Romania (1866–1881)Principatele Unite ale Moldovei și Țării Românești (Romanian)1859–1881 FlagTop: After 1866Bottom: 1862-1866 Coat of arms Motto: Toți în unuAll for One(1862–1866)Nihil Sine DeoNothing without God(1866–1881)Anthem: Marș triumfalTriumphant March(1862–1881)Hora UniriiHora ...

Westport Town Hall Theatre

Municipal building in Westport, County Mayo, Ireland Westport Town Hall TheatreAmharclann Halla an Bhaile Cathair na MartWestport Town Hall TheatreWestport Town Hall TheatreLocation within IrelandGeneral informationArchitectural styleNeoclassical styleAddressThe Octagon, WestportCountryIrelandCoordinates53°47′57″N 9°31′27″W / 53.7993°N 9.5241°W / 53.7993; -9.5241Completed1903 Westport Town Hall Theatre (Irish: Amharclann Halla an Bhaile Cathair na Mart), fo...

 

Eddy covariance

Atmospheric measurement technique Eddy covariance system consisting of an ultrasonic anemometer and infrared gas analyser. The eddy covariance (also known as eddy correlation and eddy flux) is a key atmospheric measurement technique to measure and calculate vertical turbulent fluxes within atmospheric boundary layers. The method analyses high-frequency wind and scalar atmospheric data series, gas, energy, and momentum,[1] which yields values of fluxes of these properties. It is a stat...