Edemede
Azure B: ihe adịghị ọcha na methylene blue, metabolite, na ngwakọta nyocha
Azure B bụ ngwakọta kemịkal dị iche nke nwere njikọ chiri anya na methylene blue. Ọ nwere ike ịdịlarị n'ime sample methylene blue, pụta mgbe ahụ haziri methylene blue, ma ọ bụ nye ya iche maka nnwale. Nkọwa ndị a anaghị emegiderịta onwe ha. Ha na-akọ ebe ngwakọta ahụ si bịa na ihe onye nyocha na-ajụ gbasara ya.
Ọdịiche a dị mkpa mgbe a na-akọwa certificate of analysis ma ọ bụ nkwupụta gbasara ọrụ bayoloji. Ịkpọ Azure B metabolite na-arụ ọrụ apụtaghị na ọnụọgụ ya a na-achịkwaghị achịkwa n'ime karama bụ ihe a chọrọ. Ịkpọ ya ihe adịghị ọcha apụtaghị na ọ naghị arụ ọrụ bayoloji.
Gịnị na-agbanwe n'ụzọ kemịkal?
Azure B bụ derivative nke methylene blue e wepụrụ otu methyl na ya. Otu methyl group jikọrọ na nitrogen ejirila hydrogen dochie ya. A kọwara njikọ a na mkparịta ụka kemịkal na Figure 1 nke nyocha Schirmer na ndị ọrụ ibe ya. Nke a bụ mgbanwe nhazi kpọmkwem, ọ bụghị naanị aha ọzọ maka methylene blue.
Ọ dịkwa iche na reduction gaa na leucomethylene blue. Reduction na-agbanwe oxidation state; N-demethylation na-agbanwe substituent dị na nitrogen. Ịwere usoro abụọ ahụ dịka naanị “methylene blue ịghọ ihe na-enweghị agba” na-ehichapụ ọdịiche dị mkpa maka ịkọwa metabolism. Aha dye ndị yiri ibe ha chọrọ otu nlezianya ahụ: Azure A, Azure B, na methylene blue abụghị aha a pụrụ iji dochie ibe ha. Ntuziaka gbasara ngwakọta nwere aha yiri ibe ha na-akọwa nsogbu aha ahụ.
Ebe atọ o si abịa, ajụjụ atọ dị iche
Diagram dị na cover na-ekewa ụzọ atọ a pụrụ isi banye n'ime nyocha. Tebụl a na-eme ka ihe akaebe a chọrọ n'ụzọ nke ọ bụla doo anya.
| Ebe Azure B si banye na nyocha | Ajụjụ a na-ajụ | Ihe akaebe bara uru | Nkwubi okwu na-esoghị ya |
|---|---|---|---|
| Ọ dịlarị n'ime ihe mmalite | Gịnị dị n'ime batch a? | Usoro nke na-ekewa ma na-atụ ọnụọgụ Azure B, jikọrọ ya na lot ahụ na specification dị mkpa | Ọnụọgụ a chọpụtara na-eme ka mmetụta ngwaahịa ahụ ka mma |
| A chọpụtara ya mgbe ekpughere methylene blue | Kedu ngwakọta dị n'oge dị iche iche? | Nnyocha ihe mmalite tinyere nha bayoloji a kwadoro nke e mere ugboro ugboro n'oge dị iche iche | Molecule ọ bụla a chọpụtara ga-abụrịrị nke e mepụtara n'ime ahụ |
| Etinyere ya dịka ngwakọta a kọwara iche | Gịnị ka Azure B n'onwe ya na-eme? | Identity, purity, concentration, comparator, na experimental endpoint akọwapụtara | Otu mmetụta ahụ na-eme n'ahụ ndị ọrịa na-ewere methylene blue |
A na-eleghara ahịrị etiti anya ngwa ngwa. Ọ bụrụ na Azure B dị n'ime ihe e nyere, sample bayoloji e were mgbe e mesịrị nwere ike ịnwe ma ngwakọta dịbu adị ma nke e mepụtara ọhụrụ. Igosipụta na e mepụtara ya chọrọ ihe karịrị naanị ịhụ peak mgbe ikpughe gasịrị.
Azure B n'ime ihe mmalite
Otu ọmụmụ analytical nke gara aga na-enye ihe atụ bara uru nke ihe mere obere constituent ji nwee ike ịdị mkpa. Ndị nyocha nyochara iodination nke methylene blue site na HPLC–mass spectrometry chọpụtara na isi iodinated product sitere na ihe adịghị ọcha Azure B. Sample methylene blue ha nyochara nwere ihe dịka 7–8% Azure B. N'okpuru ọnọdụ reaction ha, iodinated Azure B karịrị iodinated methylene blue nke ukwuu.
Pasent ndị ahụ na-akọ ihe dị n'ime ihe e ji mee ọmụmụ 1999 ahụ. Ha anaghị egosi oke ihe adịghị ọcha a nabatara taa ma ọ bụ composition nke ngwaahịa onye na-ebubata ọzọ. Nnwale ahụ na-egosi otu isi ihe pere mpe: ngwakọta kachasị n'ime ihe mmalite agaghị abụrịrị nke na-emepụta reaction product kachasị.
Maka certificate of analysis, lelee nsonaazụ Azure B kpọmkwem, units, test method, reporting limit, na lot identity. Total dye assay na related-substances test na-aza ajụjụ dị iche. Nsonaazụ “undetected” chọkwara detection ma ọ bụ reporting limit ka a nwee ike ịkọwa ya. Lee otu esi agụ certificate of analysis nke methylene blue maka nyocha sara mbara nke akwụkwọ ahụ.
Azure B a na-emepụta n'oge metabolism
Ịmụ metabolism chọrọ analytical separation nke parent compound na metabolite ya. Kim na ndị ọrụ ibe ya mepụtara usoro LC–MS/MS nke na-atụ ngwakọta abụọ ahụ n'ime plasma oke. Calibration range ha bụ 1–1,000 ng/mL maka ngwakọta nke ọ bụla, ebe lower quantification limit bụ 1 ng/mL site n'iji 20 microlitres nke plasma oke. Mgbe ahụ, ha jiri usoro ahụ mee ọmụmụ pharmacokinetic n'oke.
Nkọwa a dị mkpa n'ihi na usoro nha nwere sample context nke ya. Validation n'ime plasma oke anaghị akpaghị aka gosipụta accuracy n'ime plasma mmadụ, urine, ma ọ bụ concentrated commercial solution. Usoro ahụ na-egosi otu ndị nyocha nwere ike isi soro ngwakọta abụọ ahụ iche iche; ọ naghị enye iwu dosing maka mmadụ.
Data gbasara exposure n'ime mmadụ na-egosikwa ihe mere otu metabolite percentage a kapịrị ọnụ ji ezughị. Akụkụ clinical pharmacology nke label injection methylene blue na-akọ na Azure B exposure mụbara n'etiti ndị sonyere nwere renal impairment. Exposure n'oge dị iche iche na-egosipụta formation, distribution, na elimination, ọ bụghị naanị composition dị n'ime karama. Route, oge sampling, na compartment a tụrụ niile dị mkpa mgbe a na-atụnyere nsonaazụ ndị a.
Ihe nnwale kpọmkwem na-egosi
Azure B nwere pharmacological activity a pụrụ ịtụ. Ajụjụ bara uru karị bụ target nke ọ na-emetụta na ọnọdụ ndị dị aṅaa.
N'ime ọmụmụ 2012 jiri recombinant human monoamine oxidase, Azure B gbochiri MAO-A na IC50 nke 11 nM, ma e jiri ya tụnyere 70 nM maka methylene blue n'okpuru otu ọnọdụ ahụ. IC50 bụ concentration e jikọtara na 50% inhibition n'ime assay ahụ. Azure B gbochikwara MAO-B, mana na concentration dị elu nke ukwuu: 968 nM. Ndị nyocha ahụ kọrọ reversible inhibition.
Nsonaazụ ndị a na-akwado na ọ nwere ike inye aka na mmetụta bayoloji na interactions, gụnyere ajụjụ gbasara methylene blue na neurotransmitters. Ha apụtaghị na Azure B ji ugboro isii ka mma dịka ọgwụ. Ratio ahụ na-akọ inhibition nke otu enzyme n'ime otu experimental comparison.
Otu nnwale human cholinesterase ọzọ na-egosi oke nke generalization ahụ. IC50 values nke Azure B bụ 0.486 micromolar maka acetylcholinesterase na 1.99 micromolar maka butyrylcholinesterase. Methylene blue siri ike karị n'ime otu assays ndị ahụ, na respective values nke 0.214 na 0.389 micromolar. Usoro ike ha gbanwere dabere na biological target. Ọ dịghị nke nsonaazụ ndị ahụ n'onwe ya na-egosi cognition ka mma ma ọ bụ ọgwụgwọ Alzheimer's disease.
Site na experimental activity ruo clinical interpretation
Nnwale n'anụmanụ zuru oke na-agbakwunye ọkwa ọzọ nke ihe akaebe n'enweghị idozi ajụjụ clinical efficacy. N'ime ọmụmụ oke nke Delport na ndị ọrụ ibe ya, Azure B belatara immobility n'ime acute forced-swim test, ebe methylene blue na imipramine so na comparators. Akwụkwọ ahụ kpọrọ nke a antidepressant-like effect. Ọ bụ behavioral experiment n'oke, ọ bụghị trial na-atụ recovery from depression n'ime ndị ọrịa.
Maka nkwupụta ọ bụla gbasara Azure B, buru ụzọ mata ihe a nwalere. Mgbe ahụ mata organism ma ọ bụ assay, exposure, na endpoint. N'ikpeazụ, lelee ma nkwubi okwu ahụ gbasara composition, metabolism, enzyme activity, animal behavior, ma ọ bụ clinical benefit. Usoro ndị a na-egbochi ka ewere nsonaazụ batch-quality dịka treatment claim, ma na-egbochikwa ka ewere experimental mechanism dịka patient outcome e guzobere.