Vitamin A- Biochemical functions, Deficiency manifestations, RDA, Sources

Grades of Vision impairment (WHO)
Walds visual cycle
Digestion, absorption and storage
Different vitamers
Other functions
Treatment of vitamin A deficiency

[@sivaramprasadramineni8849]

I found this same answer too hard to memorize in U.satya narayana book, but you made feel this answer very elaborative and memorable in my whole life thank you sir.

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[@parthpatidar2376]

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@@parthpatidar2376 it's somewhat hard to answer to those questions...

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Not very understandable for me. I find it very difficult to read through the accents...especially without official captions.

[@user-fj8xy3by1q]

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bohat dhanevad sir gee, bhagwan apko sawarg main dalay ap devta ho ap am nai ho ap bhagwan ka roop ho bhagwan ny ye kala ap mein rakhi sukhi raho. Pranam 🤲🏻🤲🏻🥺

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Such a nice teacher you are, the best one indeed!!!😃

[@somanathkittur5416]

Sir mechanisms are made too easy and due to it textbook reading time is decreased and deeper and correct concept build up tq ❤️👍🏻👍🏻

[@redunation]

Thank you sir. ❤️.
Tomorrow my biochemistry exam. Now I'm watching your video and I've learned about this absorption, storage and metabolism of vitamin A. ...

[@roshnisao6486]

I am Completely dependent upon you for biochemistry...
Thank you so much Sir for such a great video 🙏🙏❤️😍

[@christopc123]

😲

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All video are fabulose thank u taking interest in biochemistry

[@ashutoshpandey8875]

Fabulose konsa monosaccharide hai ?

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Always lucid explanations...
Thankyou very much Sir

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[@Rajesh_Jambhulkar]

You’re welcome 😊

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A mind blowing lecture , thank u sir

[@deepanshug5727]

Very high yield
Should have included Hypervitaminosis of Vitamin A

[@Greypaladin]

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Good

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Thanks for class sir

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Sir your Videos are very good but when you speak in the video the sounds come very low while watching the videos. I request u sir to pay attention upon my this request and solve the problem as soon as possible. Thankyou sir Have a nice day.

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Aswsome lecture 👌

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Biochemistry apke bharose hi ab ..😇🙏🙏

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thanks a lot sir

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Brilliant way of learning

[@yenibera.priscillaJCD]

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[@darakshanfatima39]

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Sir plzz make video on electrophoresis, colorimetry and chromatography

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Simple and best..

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great work

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Thank you for you effort

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😎🤏

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make videos also on other vitamins...

[@Rajesh_Jambhulkar]

th-cam.com/play/PLRpz4J5dUMCduIUyXVLRjBZ9NE84NSkCV.html

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informative one

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Perfect❤

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Thank uh soo much sir fo such to the point videos instead of backlog.... Sir plzz try to cover all the topics before july as our university exams are in july... n sir plzz make a video on
CANCER n DIABETES MELLITUS.... Thank uh sirrr

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Thanks Sir

[@mayayamuna5257]

Sir I have an doubt generally micromolicules like vitamins ,minerals are not involve in digestion that we r studied in our early class es then what's about this digestion and absorption of vitamins

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[@akhilareddy4283]

Tq sooo much sir 🙂

[@susanstewart1402]

My understanding is that the nuclear thyroid hormone (T3) receptor is a dimer and requires both vitamin A (form?) in combination with T3 for activation. Have you come across this information? Thyroid function is critical for hormonal and metabolic health. I recall learning about the thyroid hormone dimeric structure but I can't seem to find the reference again. Thank you.

[@amityt7162]

Thanks

[@sundusomar1960]

Thnks sir

[@ishaanmishra547]

Thank you sirji🙏🏼🙏🏼

[@sameen341]

Sir hyperpolarization se threshold berhy ga nai? To excitatory response kese hoga? Great lecture sir, Thankyou very much.

[@akshaykhatavkar1715]

hyperpolarization se glutamine inhibit hota he so signal bipolar cells ko jata he

[@kirtipal4121]

Sir plzz explain more about deficiencies like bitot spot or xerophthalmia

[@अंशुलउज्जवलकर]

Thankyou sir❤

[@susanstewart1402]

Thank you for the succinct, thorough biochemistry overview. Could night blindness, and other symptoms of vitamin A deficiency, actually be zinc deficiency? Retinol DH and Retinal DH are both zinc-dependent enzymes. Some medical practitioners find that night-blindness responds better to a good dietary supplement of zinc (such as zinc picolinate) than to supplementation with vitamin A. Many areas of the world have low levels of zinc in the soil. Zinc is also found to be highly absorbable in meat sources which may have a relationship to protein synthesis as well. China, in particular is a country with both low zinc soil as well as low dietary meat consumption. Do you have any observations regarding the zinc vs vitamin A deficiency question?

[@susanstewart1402]

Based on a brief search just now, I see that many areas of Africa also have low zinc in the soil. I always wondered why vitamin A deficiency would be such a problem in Africa given that their diet is very high in beta carotene foods. Interesting isn't it?

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[@ShubhamSingh-gk2fw]

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Sir ye XN, X1A, X1B kya hai

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It depends on ur university syllabus
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Plzzz make video on energy

[@OmoviGABRIEL]

What's it's toxicity

[@itsprotap4533]

Vit A Hypervitaminosis :Teratogenesis, increased Intracranial pressure, Hepatomegaly, dry and pruritic skin, Liver cirrhosis , reduced bone mineral density, bone fracture etc.
Vit A deficiency: Night blindness(WHO classification) , growth retardation, dry and keratinised skin, immune suppression leading vulnerable to infections, less mucus production etc.

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Thank You Sir,
NEHA GUPTA
STUDENT OF MBBS
1st year

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I really want to watch your videos but the sound of marker on board is Unbearable.

[@happysoul969]

Sir . deficiency manifestation .. Green light adaptation will get lowered ??

[@naghmakhan6077]

Vitamin A oil for hair Kaisa HOTA hai plz btaiye

[@av8480]

Sir, vitamin A capsule 25000 IU ko MG mai kaise concert kr sakte hai?

[@saramurugavalli6794]

Sir 1 doubt
What is the 1st sign of vitamin A deficiency??? Can u please clarify my doubt I am so confused.....

[@saramurugavalli6794]

Please clarify my doubt sir....

[@Rajesh_Jambhulkar]

Night blindness

[@saramurugavalli6794]

Sir is it 1st sign or 1st symptom sir???

[@Acha698]

@@saramurugavalli6794 symptom

[@shreyashsachan7261]

6:44 Wald's synthesis

[@jennathashraf9554]

8:35
I'm having a doubt
In our texts it's saying alcohol DH instead of retinol DH
Is the former ok?

[@Rajesh_Jambhulkar]

Yes,ok

[@jennathashraf9554]

@@Rajesh_Jambhulkar thanks sir

[@rathika4732]

Tq sir 🙏