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 +0  (nbme23#48)

MDMA is the only hallucinogen that has sympathetic activity as it is derived from methamphethamines ( look at its name) ... that explains everything.


 +0  (nbme23#3)

my understanding of the question is that he is asking about the cause of neonatal hypoglycemia.

as you know insulin will be high prenatally due to hyperglycemia and high levels will persists.

so if you think about hypoglycemia...the normal response for the glycogen concentration is to decrease (as well as glycogen synthase) and the gluconeogenesis to increase. so a person with impaired gluconeogenesis (which is abnormal) is more likely to develop hypoglycemia


 +0  (nbme23#4)

Hypoglycemia is a frequently encountered complication in falciparum malaria that is usually ascribed to increased glucose use and impaired glucose production caused by the inhibition of gluconeogenesis.

from trends in parasitology: https://www.cell.com/trends/parasitology/pdf/S1471-4922(06)00175-9.pdf





Subcomments ...

submitted by keycompany(122),

Nitrogen balance is a measurement of protein metabolism in the body. A negative nitrogen balance indicates muscle loss, as increased amounts of amino acids are being metabolized to produce energy. This increases the amount of nitrogen secreted from the body. Because the amount of nitrogen you are taking in is less than the amount of nitrogen you are secreting, you have a negative nitrogen balance.

This man is malnourished, edematous, cachetic, and has hypoalbuminemia. These clinical findings point to protein malnutrition (Kawashkior Disease), which causes edema due to decreased serum oncotic pressure. Low oncotic pressure in this case is due to protein loss, and hence a negative nitrogen balance.

drdoom  Nice! +1  
dubywow  I knew your last sentence and suspected Kwashiorkor. It's just everything else I did not know. I have not heard or thought of muscle/protein changes in terms of "nitrogen balance" before... and that's why I got this wrong. Nice explanation! +  
macrohphage95  I agree with you in first part but i dont think it has any relation to kwashirkor. It is simply due to cachexia which causes muscle destruction through the proteasome pathway .. +  


submitted by hayayah(411),

Coloboma is an eye abnormality that occurs before birth. They're missing pieces of tissue in structures that form the eye.

  • Colobomas affecting the iris, which result in a "keyhole" appearance of the pupil, generally do not lead to vision loss.

  • Colobomas involving the retina result in vision loss in specific parts of the visual field.

  • Large retinal colobomas or those affecting the optic nerve can cause low vision, which means vision loss that cannot be completely corrected with glasses or contact lenses.

mousie  thanks for this explanation! +  
macrohphage95  can any one explain to me why not lens ? +  
krewfoo99  @macrophage95 Lens are an interal part of the refractive power of the eye. Without the lens the image would not be formed on the retina, thus leading to visual loss +1  


submitted by sympathetikey(312),

Choice A. would have been correct if this patient was immunocompromised. Per First Aid, "If CD4 <100, Bartonella...Findings: Neutrophilic Inflammation.

However, as this patient has a competent immune system, buzz words are stellate necrotizing granulomas.

yotsubato  Everyones choice A is different. +  
sugaplum  they mean- Diffuse neutrophil infiltration +  
macrohphage95  what does stellate necrotizng granuloma means ? +  
krisgsxr600  always with the details! losing dumb points :( +1  
futuredoc12345  @sympathetikey Doesn't the biopsy finding vary with the biopsy location: Lymph nodes have stellate granulomas and Bacillary Angiomatosis (skin lesion) has neutrophilic inflammation. What do you think? +