Tiyeni tikambirane za njira yobisika yomwe imalamulira kuthamanga kwa magazi anu: (Renin-Angiotensin-Aldosterone System - RAAS)!

Kodi munayamba mwaganizapo kuti kuthamanga kwa magazi anu si chinthu chomwe simungachilamulire? Ndipotu, pali dongosolo lovuta komanso lodabwitsa mkati mwa matupi athu loti liziwongolera. Ndi dongosolo lomwe tikambirana lero. Imeneyi imatchedwa renin-angiotensin-aldosterone system , kapena mwachidule RAAS . Musadandaule, ngakhale dzinalo ndi lalitali pang'ono, tiyeni timvetse mosavuta.

Kodi RAAS (Renin-Angiotensin-Aldosterone System) iyi ndi chiyani?

Chabwino, ndiye kodi RAAS (Renin-Angiotensin-Aldosterone System) ndi chiyani? Mwachidule, ndi dongosolo lolumikizana la mahomoni, mapuloteni, ndi ma enzyme m'matupi athu omwe amagwira ntchito limodzi. Lili ngati gulu laling'ono lopangidwa bwino. Ntchito yayikulu ya gululi ndikulamulira kuthamanga kwa magazi athu ndi kuchuluka kwa madzi m'thupi lathu, kutanthauza kuchuluka kwa magazi, kwa nthawi yayitali.

Taganizirani za mitsempha yamagazi m'thupi lathu ngati mapaipi onyamula madzi. Kuchuluka kwa magazi komwe kumadutsa m'mapaipi awa, ndi kupanikizika komwe magaziwo amapereka pamakoma a mapaipi, ndi zomwe timatcha kuthamanga kwa magazi. Chifukwa chake, zomwe RAAS imachita ndikuwonjezera kuyamwanso kwa mchere (sodium) ndi madzi m'thupi. Kenako kuchuluka kwa madzi m'thupi, ndiko kuti, kuchuluka kwa magazi, kumawonjezeka. Zimathandizanso kuti mitsempha yamagazi ichepetse. Ndiko kuti, imalamulira kamvekedwe ka mitsempha yamagazi . Zonsezi zimathandiza kuti kuthamanga kwa magazi kukhale pamlingo womwe ukufunidwa, kapena m'malo mwake, pamlingo wabwino.

Pali ochita sewero atatu akuluakulu mu dongosolo la RAAS , monga anthu akuluakulu mu sewero:

• Renin: Ichi ndi enzyme.
• Angiotensin II: Iyi ndi hormone.
• Aldosterone : Ichinso ndi hormone.

Kuti tifotokoze pang'ono mawu awiriwa, ma enzyme ndi mitundu yapadera ya mapuloteni omwe amathandiza ndikufulumizitsa machitidwe a mankhwala m'thupi lathu. Amathandiza kupanga zinthu zina kukhala zatsopano ndikuphwanya zinthu zina. Mahomoni ndi amithenga a mankhwala omwe amagwirizanitsa ntchito za matupi athu. Amayenda m'magazi ndikuuza ziwalo zosiyanasiyana, minofu, ndi minofu zomwe ziyenera kuchita komanso nthawi yoti zichite. Zili ngati ntchito yotumizira makalata m'thupi lathu.

Ndiye, kodi kuthamanga kwa magazi n’chiyani?

Mukapita kwa dokotala, amayesa kuthamanga kwa magazi anu ndi chogwirira pa mkono wanu. Kunena zoona, uku ndi kuthamanga kwa magazi komwe kumachitika m'mitsempha yanu nthawi iliyonse mtima wanu ukamagunda. Kuthamanga kwabwinobwino kumeneku ndikofunikira kwambiri kuti magazi aziyenda bwino kuchokera mumtima mwathu kupita ku ziwalo zina zonse ndi minofu m'thupi lathu.

Kuthamanga kwa magazi kumadalira zinthu zingapo, monga kuchuluka kwa magazi omwe mtima wanu umapopa komanso kukula kwa mitsempha yamagazi yomwe magazi anu amadutsamo.

Zinthu zambiri, monga mankhwala ena, kuchuluka kwa cholesterol m'magazi, ndi kusuta fodya, zingakhudze kuthamanga kwa magazi. Komabe, njira yaikulu yowongolera kuthamanga kwa magazi ndi RAAS (Renin-Angiotensin-Aldosterone System). Koma kumbukirani, ngati muli ndi kuthamanga kwa magazi (hypertension) kapena kuthamanga kwa magazi (hypotension), sikuyenera kukhala vuto nthawi zonse ndi njira ya RAAS. Pakhoza kukhala zifukwa zina.

Kodi kusiyana pakati pa RAAS ndi baroreceptor reflex ndi kotani?

Zonsezi ndizofunikira kwambiri pakulamulira kuthamanga kwa magazi, koma pali kusiyana pang'ono.

Dongosolo la RAAS (Renin-Angiotensin-Aldosterone System) limagwira ntchito makamaka polamulira kuchuluka kwa magazi kwa nthawi yayitali komanso kukana kwa mitsempha yamagazi m'thupi lonse.

Kumbali ina, baroreceptor reflex, kapena monga ena amaitcha , baroreflex , imagwira ntchito pakagwa kuchepa kwa kuthamanga kwa magazi kwakanthawi kochepa . Izi zikutanthauza kuti, imachitapo kanthu mwachangu kusintha pang'ono kwa kuthamanga kwa magazi kuchokera pakugunda kwa mtima kupita ku kugunda kwa mtima. Ma baroreceptor awa, omwe ali m'mitsempha yathu, amadziwitsa mwachangu dongosolo lathu la mitsempha yodziyimira payokha za kusinthaku.

Kodi ziwalo zofunika kwambiri zomwe zimakhudzidwa ndi RAAS ndi ziti?

Ziwalo zingapo, ma glands, ndi minofu m'thupi lathu zimagwirira ntchito limodzi kuti zitsimikizire kuti dongosolo la RAAS likugwira ntchito bwino. Zofunika kwambiri mwa izi ndi izi:

• Impso : Izi ndi zoyamba kutulutsa renin.
• Chiwindi: Puloteni yotchedwa angiotensinogen imapangidwa pano.
• Mitsempha ya magazi: Izi ndi zomwe zimafinya ndikuwonjezera kuthamanga kwa magazi.
• Mapapo: Malo akuluakulu a enzyme ya ACE.
• Ma adrenal glands: Awa ndi ma adrenal glands awiri ang'onoang'ono okhala ndi mawonekedwe a triangular omwe ali pamwamba pa impso zathu. Amapanga aldosterone.
• Chiwalo cha pituitary: Ichi ndi chiwalo chaching'ono chofanana ndi fupa, chomwe chili pansi pa ubongo, pansi pa hypothalamus. Chimapanga mahomoni otchedwa ADH.
• Hypothalamus: Ichi ndi dera la ubongo lomwe limayang'anira ntchito ya dongosolo lathu la mitsempha lodziyimira palokha komanso pituitary gland.

Onani zinthu zingati zomwe ziyenera kugwirira ntchito limodzi kuti chinthu chimodzi chigwire ntchito!

Kodi njira ya RAAS iyi imagwira ntchito bwanji kwenikweni?

Chabwino, tsopano tiyeni tiwone momwe RAAS (Renin-Angiotensin-Aldosterone System) imagwirira ntchito. Iyi ndi njira yomwe imachitika m'magawo angapo:

1. Choyamba, tangoganizani kuti kuthamanga kwa magazi anu kwatsika pang'ono mwadzidzidzi . Kapena kuti kuchuluka kwa magazi opita ku impso kwachepa. Panthawiyo, impso zathu ziwiri zanzeru zimatulutsa enzyme yotchedwa renin m'magazi.

2. Kenako renin iyi imapita ndikuswa puloteni yotchedwa angiotensinogen , yomwe imapangidwa m'chiwindi chathu ndikuwonjezeredwa m'magazi. Zili ngati kudula pepala ndi lumo. Kenako hormone yotchedwa angiotensin I imapangidwa.

3. Koma angiotensin I iyi siigwira ntchito kwambiri, kutanthauza kuti, siigwira ntchito kwambiri (yosagwira ntchito). Choncho ikayandama m'magazi, enzyme yotembenuza angiotensin (ACE) m'mapapo ndi impso zathu imaiphwanya m'zidutswa zambiri. Pamenepo ndi pamene hormone yogwira ntchito kwambiri yotchedwa angiotensin II imapangidwa.

4. Tsopano angiotensin II iyi ndiye kavalo weniweni wogwira ntchito. Mwadzidzidzi imapangitsa kuti makoma a minofu ya mitsempha yathu yaying'ono, ma arterioles, atseke. Taganizirani ngati kufinya chitoliro cha madzi ndipo madzi akuyenda mofulumira, ndipo mitsempha ikatsekeka, kuthamanga kwa magazi kumawonjezeka. Sikuti zokhazo, angiotensin II iyi imauza ma adrenal glands athu kuti atulutse hormone yotchedwa aldosterone . Imauzanso pituitary gland kuti itulutse hormone yotsutsana ndi diuretic, ADH (Antidiuretic Hormone), kapena Vasopressin .

5. Kenako, aldosterone ndi ADH zimagwirira ntchito limodzi kuuza impso kuti zitengenso mchere womwe thupi limafunikira, kutanthauza sodium, m'thupi, kuti usungidwe. Nthawi yomweyo, aldosterone imauza impso kuti zitulutse potaziyamu yomwe thupi silifunikira mu mkodzo .

6. Choncho, pamene kuchuluka kwa sodium m'magazi kukukwera, thupi limayambanso kusunga madzi. Kenako kuchuluka kwa magazi kumawonjezeka, ndipo kuthamanga kwa magazi kumawonjezeka. Umu ndi momwe dongosolo la renin-angiotensin-aldosterone limakwaniritsidwira. Kuthamanga kwa magazi kumabwerera mwakale.

Dongosolo la RAAS limatha kuyatsidwa ndi mahomoni ena angapo. Mwachitsanzo , corticosteroids, estrogen, ndi mahomoni a chithokomiro amathanso kuyambitsa dongosololi.

Kodi pali ubale wotani pakati pa kulephera kwa mtima ndi RAAS?

Tsopano tiyeni tiwone dongosolo la RAAS, lomwe ena amalitcha kuti kulephera kwa mtima.Kodi pali ubale wotani pakati pa vutoli ndi dongosolo la RAAS? Ndipotu, m'thupi la munthu amene ali ndi matenda a mtima, dongosolo la RAAS limeneli limagwira ntchito yofunika kwambiri, ndipo nthawi zina imakhala yovuta.

Poyamba, mtima ukakhala kuti sungathe kupompa magazi moyenera (monga mtima ukakhala wofooka), sungathe kupereka magazi okwanira ku ziwalo zofunika kwambiri za thupi. Panthawiyo, kusintha kwa dongosolo la RAAS kumayamba kuchitika ngati njira yolipirira izi. Mwa kuyankhula kwina, thupi limayesetsa kulipirira vutoli.

Makamaka, RAAS imatulutsa mahomoni ambiri otchedwa Angiotensin II pofuna kuchepetsa kuyenda kwa magazi. Komabe, kuwonjezeka kumeneku kwa Angiotensin II pakapita nthawi kungapangitse matenda a mtima kukhala ovuta kwambiri. Asayansi amakhulupirira kuti kuchuluka kwa Angiotensin II kumeneku kumayambitsa kukula kwa mtima ndi kusintha kwa thupi.

Kunena zoona, mtima ukakhala wofooka ndipo ukupopa magazi ochepa, thupi limaganiza kuti, 'O, kuthamanga kwa magazi kwanga kuli kotsika, ndilibe magazi okwanira.' Choncho RAAS imayatsidwa kuti iwonjezere kuthamanga kwa magazi ndikuwonjezera kuchuluka kwa magazi. Ngakhale kuti zimenezo zingathandize kwakanthawi kochepa, m'kupita kwa nthawi, zimawonjezera kupsinjika kwa mtima womwe uli kale wofooka.

Pachifukwa ichi, pochiza anthu omwe ali ndi matenda a mtima, madokotala amagwiritsa ntchito mankhwala omwe amakhudza mwachindunji dongosolo la RAAS ndikuwongolera momwe limagwirira ntchito. Mankhwalawa amaletsa dongosolo la RAAS kugwira ntchito mosayenera. Nazi zitsanzo zingapo:

• Beta-blockers
• Oletsa ma enzyme otembenuza angiotensin (ACE inhibitors)
• Ma ARB (Angiotensin receptor blockers)
• Otsutsa a Mineralocorticoid receptor (MRAs)

Mankhwalawa amachepetsa kupsinjika kosafunikira pamtima ndipo amathandiza kuwongolera matenda a mtima.

Chinthu chofunika kwambiri chomwe tiyenera kukumbukira ndi

Kotero, tsopano mutha kuona kufunika komanso zovuta kwa dongosolo la renin-angiotensin-aldosterone (RAAS) powongolera kuthamanga kwa magazi athu komanso thanzi la mtima. Zingawoneke ngati zovuta pang'ono, koma ndi dongosolo lofunikira kuti thupi lathu likhale lathanzi. Limagwira ntchito ngati injiniya wamng'ono mkati mwa thupi lathu.

Ngati muli ndi nkhawa iliyonse yokhudza kuthamanga kwa magazi anu, mwachitsanzo, ngati muli ndi zizindikiro za kuthamanga kwa magazi kapena kuthamanga kwa magazi kotsika , kapena ngati mukuona kuti kuthamanga kwa magazi kwanu n'kovuta, chonde onani dokotala wanu kuti akupatseni upangiri.Ali okonzeka kukuthandizani ndikuyankha mafunso anu. Ndikofunikira kwambiri kudziwa zinthu zotere, chifukwa pokhapokha tingapange zisankho zolondola pankhani ya thanzi lathu. Kudziwa thupi lanu ndiyo njira yabwino kwambiri yokhalira ndi moyo wathanzi.

Renin -angiotensin-aldosterone system, RAAS, kuthamanga kwa magazi, mahomoni, impso, matenda a mtima, kuthamanga kwa magazi, ma enzyme, aldosterone, angiotensin