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Why have multiple alleles for beta chains evolved in certain parts of the world? [on hold]

I believe that this could be because individuals may have had interactions with a parasite, for example Malaria, that caused changes resulting in different beta chains. Can anyone explain this more ...
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18 views

What's the effect of hyperkalemia and hypokalemia on the cardiac excitability? [closed]

I was wondering what the effects of both hyperkalemia and hypokalemia are on the cardiac excitability. Does it affect the pacemaker cells too or just the normal cardiomyocytes?
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IG isotypes in commercial mAb products

It appears that most monoclonal antibody medical products exclusively contain the IgG (and some IgE) isotypes. Also, some manufacturers use only certain IgG subclasses. While the IgG-isotype is the ...
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1answer
55 views

Healing of Skin Superficial Wound

How does the body heal a skin wound without bleeding? I had a wound in which thick layer of skin was gone and which was too painful to touch. I could see the wound secreting clear liquid rather than ...
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1answer
68 views

spinal cord lesion and result in somatic sensation

Jimbo suffers a lesion to the entire right half of the spinal cord at the T6 level. A few weeks after his injury, his doctor tests his right and left legs for somatic sensation and tone. fill out her ...
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0answers
29 views

Why alcohol can't help with OCD?

I was thinking about influence of ethanol on our brain. We know, that ethanol can affect GABA receptors and increase flow of chlorine in our brain cells. So it makes signal weaker and slow our CNS ...
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1answer
68 views

Is a bone marrow transplant limited by sex?

Can a female patient get transplanted with bone marrow of a male donor and vice versa?
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0answers
16 views

How is the side-polarity of the myosin filament in myofibril maintained?

If myosin molecules are the properly oriented relative to their position in the the myosin filaments, the sarcomere is not functional. But how is the orientation of the myosin molecules determined? ...
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1answer
66 views

Do animals get sick with hemorrhoids?

Do animals get sick with hemorrhoids ? And why Humans are most affected of it ? Is it because the gravity center of Humans is sittuated in the anal ?
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1answer
39 views

What some important studies in medicine that were later found to be fake? [closed]

What are some important studies that were later found to be fake? How often do scientists make up data?
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3answers
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What does irregular heartbeat mean in simple language?

I bought a blood pressure monitor (A&D UA-851) which has the option to measure irregular heartbeat. I do understand what 'irregular' means, but why do irregular heartbeats happen and what are ...
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1answer
54 views

Why does HPV Infect Squamous Epithelial Cells and Not Others?

I've seen this question about HPV and the reference therein. The link states "Human papillomavirus (HPV) is a DNA virus that presents tropism for epithelial cells, causing infections of the skin and ...
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1answer
82 views

What causes swelling after impact?

Why does the head swell after getting hit by something hard? What is the liquid that forms after impact?
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1answer
44 views

What is a catalytic domain?

I have to answer a few questions from an article I'm reading, and I am just really confused on defining "catalytic domain." I have to relate it to the antibiotic Teixobactin. Is catalytic domain the ...
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1answer
161 views

Doing a medical study on yourself?

What research guidelines is a person legally mandated to follow if they want to do medical experimentation on themselves? There is a large amount of variation in the types of medical experiments so I ...
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54 views

Do “scars” in humans replace all the skin layers or only some layers?

When someone has a cut or surgical incision that results in a "scar", is the scar tissue replacing all 3 layers of the skin (epidermis, dermis, hypodermis)? Or only the first one or two of them?
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46 views

Why exactly does a scarf help against a neck pain and a sore throat?

I was going out without a scarf and as this day my neck was more sensitive; after a while my voice was rasping, I needed to cough and my neck was hurting slightly. After coming home I put on my silk ...
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1answer
177 views

Why do doctors still advise HIV+ couples to wear a condom during sex?

HIV infected people already have HIV, but why do doctors still advise condom use for HIV+ couples?
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1answer
155 views

Why do people in the scientific community use terminology such as renal, hepatic, cardiac instead of kidney, liver and heart? [closed]

Are there differences between renal, hepatic, cardiac and kidney, liver and heart? Is the "jargon" used more commonly because of tradition, or is there some definitive biological basis to it?
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2answers
92 views

Blood draw from the elderly or those with tiny veins

A lot of people have very small veins making it next to impossible to draw blood. Would a nitroglycerin tablet (or some other vasodilator) before drawing blood help to enlarge veins?
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0answers
35 views

Why are kidney discard rates so high?

A recent report from UNOS states: The kidney discard rate has returned to pre-KAS levels, dropping from 20.2 percent in the first six months to 18.4 percent in months 7-10. To me, this seems ...
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3answers
237 views

Can/Have cancer cells be/been used in stem cell culture lines?

Since Cancer cells have unlimited growth potential, can they be induced towards totipotency and pluripotency? If so, can cancer cells be used in stem cell culture because of similar properties of ...
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3answers
92 views

Homeopathy is placebo, but isn't placebo good?

I never considered homeopathy as a serious and scientific medicine, and now we have plenty of evidence supporting this ...
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2answers
1k views

How are Maggots Sterilized (Disinfected)?

For maggot therapy, how are maggots disinfected? I'd imagine there's a limited scope of measurements that can be taken to sterilize the maggots - i.e. we don't want to sterilize them and kill them ...
2
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1answer
19 views

To have a drug travel to a specific place in the body can you just coat the drug in extracellular signals recognized by target cells?

In a lecture of mine the professor was talking about the issue faced in regards to drug therapy when it comes to targeting lung cells in cystic fibrosis. It was said that if unless the drug gets ...
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1answer
60 views

Is it possible for a person to eat so many carrots that one turns orange?

I once read that Jerry Rubin (a famous 1960s activist) ate so many carrots that he turned orange. (This was in the East Bay Express, around twenty years ago.) I assumed it could be true, though he ...
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1answer
74 views

Why are pharmacology studies so experimental?

I am a med student, and as far as I see from our pharmacology lectures, pharmacologists work almost completely experimental. Quite typically they take a substance (e.g., from nature), they add, change ...
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1answer
62 views

Do oral vaccines exist?

Do edible vaccines exist, and if yes, what is their mode of action? Are there any edible vaccines commercially available now?
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18 views

Source of journals collecting titles of scientific publications regarding clinical trials with dogs fed medicinal herbs

After some time researching on the web, you can find a lot of websites telling you that some herbs may have or have specific properties(unfortunately most seem to be "advertised" as if they were ...
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1answer
41 views

Does alcohol really do more damage to the body of a child compared to an adult?

Beside the fact that children and teens (people under the age of 18 year) usually have less body weight than the average adult, is there a biologically fundamental difference between the damage done ...
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40 views

How does drug-induced photosensitivity work?

Some drugs (tetracyclines, for instance) can cause photosensitivity reactions—that is, some patients become extremely sensitive to the sun, developing rashes or inflammation after spending time ...
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0answers
26 views

Why can't diamine oxidase be supplemented?

I've read that diamine oxidase cannot be supplemented from an academic article but it had no explanation as for why. I am curious as to why this? Article reference: ...
14
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1answer
25k views

how to close a severed artery/vein?

This is a medicine-related question that I've been wondering about. I've been watching medical lectures on YouTube regarding the human body and was wondering about how surgeons treat a severed artery ...
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4answers
2k views

Where’s the flaw in my proposed TB Treatment?

Ten years ago, I emailed a prominent lung specialist with my suggestion for a treatment for Tuberculosis. His lack of response led me to believe that the idea had no merit whatsoever – but I had no ...
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0answers
73 views

Why do some medicines induce sleep? [closed]

I have seen lot of people sleep or say that they are feeling sleepy after taking some medicines. Why? I mean, if a medicine acts on some cell of the body because that cell has got its receptors and ...
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1answer
132 views

Effect of nerve pills and relationship to Shingles [closed]

Do nerve pills actually suppress the nervous system and how would that effect the Shingles virus which is known to activate under large amounts of stress?
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1answer
62 views

Are there medical treatments that were so effective they were never subjected to a randomized control trial?

I'm thinking of things like antibiotics for meningitis or tuberculosis, or thiamine for Wernicke-Korsakoff syndrome. In those cases the magnitude of the treatment effect might have been so great that ...
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1answer
143 views

What can cause a lump in the middle of the neck? (homework case study) [closed]

What can cause an erythematous, fluctuant, nontender mass in the middle of the neck? Full Case Study: (Its the last of 6 cases and I just can't figure this one out, because of all the possibilities, ...
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1answer
105 views

Does homeopathic or herbal treatment of cancer have any scientific recognition?

Even though we have a very high tech society, cancer is still a serious issue. We humans still are not entirely capable of fighting cancer. Radiation and chemotherapy are still considered the best ...
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1answer
118 views

Do distinctions between dry, tickly and chesty coughs have any medical basis?

Background At least in Britain you normally come across distinct kinds of cough medicine "chesty", "dry" and "tickly". Questions Are "chesty", "dry" and "tickly" coughs always due to ...
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1answer
136 views

Formaldehyde turns plantar region of feet red?

I'm a freshman med student and I've noticed that on all the feet (and hands) of deceased people that I've worked with, the bottom of the feet always turns red and also the inside of the palm? Why is ...
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1answer
298 views

How does the body respond to blood donation; are there any possible risks?

Can blood donation cause any harm to the donor? I have been told so, but cannot find any references supporting this claim. I have also learned that our body will replace the lost fluids within 24 ...
5
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1answer
2k views

How does food intake affect medicine? Why pill instructions recommends taking them before (after) meal?

Even simple vitamins seem to have this in the instruction. Why is is so? Is there some simple model of how do pills interact with food? Does it depend on the food type? (What about drinks?) Should ...
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2answers
675 views

Should hydrogen peroxide be applied on a bloody nose? [closed]

When I was a kid, my parents taught me to apply hydrogen peroxide on my nose whenever it bled. It's a rare event, but my nose bleeds from time to time, and when it does, I always go through the same ...
3
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1answer
6k views

Do Penicillin based antibiotics affect birth control?

I wasn't sure whether to ask this question on Biology or Chemistry Stack Exchange, since it is really biochemisty, but this is something that's been puzzling me. Most pharmacists (all that I've ...
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0answers
1k views

Is a hard slap to the head a medical emergency? [closed]

I was just slapped in the head twice by my older brother (we had a fight). He hit me pretty hard with an open palm on the side of my skull, but I didn't feel dizzy or become unconscious. The stinging ...
1
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1answer
64 views

Is it possible for a human to get rabies from a rabies vaccine meant for dogs?

What would happen if a human was injected with a rabies vaccine meant for dogs? I know vaccines can contain weak or dead strains of the virus, but is it possible that the human could become infected ...
4
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2answers
83 views

What is overdiagnosis?

What is overdiagnosis ? I have searched this Wiki result but didn't understood at all. Can you please explain the first two line of Wikipedia : Overdiagnosis is the diagnosis of "disease" that ...
4
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1answer
76 views

What is the best way to orally administer a water insoluble powdered drug to macaque monkeys?

They typically need to be given ~150mg, once a day, and it'll last for two weeks. The drug is very water insoluble, becomes almost like a paste, not suitable for tube feeding. And yes, this is for for ...