http://www.medscape.com/features/slideshow/mole-melanoma
A good slideshow displaying a series of dermatological pictures and description. Excellent start for IMU students like us in Phase 1 who haven't studied a little on dermatological problems.
Thursday, July 30, 2009
Wednesday, July 29, 2009
Spiders
Okay, just listened to Dr. Goljan audio lectures. Stunned to me is that he mentioned spiders. I never thought spiders can even come out as question itself in any exam. Well, guess a little information won't ruin you right? But the overwhelming information does. So, this is what I found out about spiders:
There are 2 types of feared spiders we need to know in States, i.e. Latrodectus mactans, otherwise known as the (southern) Black widow spider and the brown recluse spider, Loxosceles reclusa. The first one was well known of an interesting fact, which is male cannibalism (meaning the spider will "eat" up the male after mating. That's why they are widows!) Take note that not all black widow spider does this, this is only special on the above mentioned species. The venom of brown recluse spider is a more fearsome one compared to Latrodectus mactans.
Lactrodectus mactans
(Check out: http://www.emedicinehealth.com/black_widow_spider_bite/article_em.htm & http://en.wikipedia.org/wiki/Latrodectus_mactans)
Basically this is the one which secretes neurotoxic venom. Something like painful muscle contraction those kind of stuff. Latrodectism (http://en.wikipedia.org/wiki/Latrodectism), main thing here is the group of muscle pain presented in the clinic with particular interest on abdominal cramps. One may even ended up a surgery to see what's inside, only to find that everything's normal.
Loxosceles reclusa
(Check out http://en.wikipedia.org/wiki/Brown_recluse_spider)
Symptoms otherwise known as loxoscelism. This is a much more deadlier, a more potent venom, even deadlier than cobras? Come out during the night. Can cause much more severe symptoms than latrodectism, includes DIC, hemolysis etc.
Treatment tends to skew towards giving anti-venom, because it's obvious to give anti-something treatment. Of course there are other treatment as well. Main thing here is if you don't disturb them, they don't disturb you. Please do check out how to prevent this pests from hurting you. No need for arachno-phobia, just be yourself and take all necessary precautions. That's all.
There are 2 types of feared spiders we need to know in States, i.e. Latrodectus mactans, otherwise known as the (southern) Black widow spider and the brown recluse spider, Loxosceles reclusa. The first one was well known of an interesting fact, which is male cannibalism (meaning the spider will "eat" up the male after mating. That's why they are widows!) Take note that not all black widow spider does this, this is only special on the above mentioned species. The venom of brown recluse spider is a more fearsome one compared to Latrodectus mactans.
Lactrodectus mactans
(Check out: http://www.emedicinehealth.com/black_widow_spider_bite/article_em.htm & http://en.wikipedia.org/wiki/Latrodectus_mactans)
Basically this is the one which secretes neurotoxic venom. Something like painful muscle contraction those kind of stuff. Latrodectism (http://en.wikipedia.org/wiki/Latrodectism), main thing here is the group of muscle pain presented in the clinic with particular interest on abdominal cramps. One may even ended up a surgery to see what's inside, only to find that everything's normal.
Loxosceles reclusa
(Check out http://en.wikipedia.org/wiki/Brown_recluse_spider)
Symptoms otherwise known as loxoscelism. This is a much more deadlier, a more potent venom, even deadlier than cobras? Come out during the night. Can cause much more severe symptoms than latrodectism, includes DIC, hemolysis etc.
Treatment tends to skew towards giving anti-venom, because it's obvious to give anti-something treatment. Of course there are other treatment as well. Main thing here is if you don't disturb them, they don't disturb you. Please do check out how to prevent this pests from hurting you. No need for arachno-phobia, just be yourself and take all necessary precautions. That's all.
Tuesday, July 28, 2009
ECG Quiz
http://ecg.bidmc.harvard.edu/maven/mavenmain.asp
Yes, I found a good website. A harvard website apparently, talking about ECG. Challenge yourself with the 404 ECG questions posted there.
Yes, I found a good website. A harvard website apparently, talking about ECG. Challenge yourself with the 404 ECG questions posted there.
Friday, July 24, 2009
Histology
Go check out this histology site I found. Challenge yourself by identifying all the structures or organelles, to be accurate, in a simple cell.
http://www.bu.edu/histology/m/t_electr.htm
P/S: If there is no label for the EM graphs, I wouldn't have known what I am seeing, seriously...
http://www.bu.edu/histology/m/t_electr.htm
P/S: If there is no label for the EM graphs, I wouldn't have known what I am seeing, seriously...
Sunday, July 19, 2009
Protein Synthesis
This is a good site for biochemistry learning in terms of protein synthesis: http://www.biostudio.com/d_%20Protein%20Synthesis%20Prokaryotic.htm
It so happen that I was doing my USMLE question bank and I was shocked that there is a certain stuff which is not known to me until recently after I surf the net. Okay, it's just a sequence in the mRNA which is named Shine-Dalgarno sequence. It is the initiator of the protein synthesis in prokaryotes. Homologous to this in eukaryotes is Kozak sequence. I am not sure whether this is tested as I seldom see this in my books. There are also lots of factors playing around in the process of protein synthesis. Main thing we are concern of in clinical practice is the diphtheria toxin which inhibits protein synthesis via ADP ribosylation of EF-2. EF-2 is essential in eukaryotes in peptide elongation (translation process), as the same function as it is being named after. If it's the case of prokaryotes, then it is EF-Tu, something like that. Of course these are not just the only factors involved in the protein synthesis.
It so happen that I was doing my USMLE question bank and I was shocked that there is a certain stuff which is not known to me until recently after I surf the net. Okay, it's just a sequence in the mRNA which is named Shine-Dalgarno sequence. It is the initiator of the protein synthesis in prokaryotes. Homologous to this in eukaryotes is Kozak sequence. I am not sure whether this is tested as I seldom see this in my books. There are also lots of factors playing around in the process of protein synthesis. Main thing we are concern of in clinical practice is the diphtheria toxin which inhibits protein synthesis via ADP ribosylation of EF-2. EF-2 is essential in eukaryotes in peptide elongation (translation process), as the same function as it is being named after. If it's the case of prokaryotes, then it is EF-Tu, something like that. Of course these are not just the only factors involved in the protein synthesis.
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