Introduction:
Chemical Name: 2 - acetoxy-N-(5 - nitro -2-- thiazolyl) benzamide
CAS No: 55981-09-4
Molecular formula: C12H9N3O5S
MW: 307.28
Quality:
Appearance: Light yellow to white crystalline powder
Content (HPLC): greater than 99.0%
Melting point: 196-202 ℃ Loss on drying: less than 0.5% Max
Use: anti-bacterial drugs
This product is a nitrate thiophene amide derivatives of salicylic acid, although the actual mechanism has not yet clear, but is thought to inhibit the pyruvate, ferredoxin oxidoreductase enzyme-dependent electron transfer reaction on and after by the anaerobic energy metabolism is essential. In addition to the intestinal Cryptosporidium parvum and Giardia lamblia in addition, the product of many intestinal parasites such as Cryptosporidium, such as Bayesian, amoeba, human roundworm, hookworm, whipworm hair first, beef tapeworm, short film Shell has tapeworm and Fasciola activity.
In addition, the product of certain anaerobic and aerobic micro, such as Helicobacter pylori also has activity. According to June 13, 2006 the British medical journal "Lancet" published an article shows nitazoxanide result due to rotavirus diarrhea in children also has a good effect.
Nitazoxanide has antiprotozoal, anti-intestinal parasites, antibacterial, antiviral efficacy, etc., and the spectrum anti-parasitic and antibacterial spectrum than albendazole, mebendazole and metronidazole wide range of application fields than other Drugs widely used.
Function:
(A) of the antiprotozoal
Cryptosporidiosis Cryptosporidiosis is a zoonotic parasitic disease worldwide, the pathogen is a compound belonging to the top of the door of the parasitic protozoa - Cryptosporidium. The disease can infect humans, pigs, cattle, sheep, mice and other animals, poultry, to severe diarrhea, dehydration, weight loss, the main symptoms. And nitazoxanide for the treatment of cryptosporidiosis cure experiments show that the curative effect.
It is reported that 100 cases were suffering from diarrhea caused by Cryptosporidium parvum by the Egyptian patients (children account for half) to accept 3-day treatment of this product, children of 100 mg or 200 mg bid (bid on behalf of 2 times a day), adult 500 mg bid , (next page) (continued on next page) to placebo as a control. Treatment group and control group cure rates were 80% (39/49) and 41% (20/49), compared the two groups statistically significant difference.
In addition, many tests prove that nitazoxanide against Entamoeba protozoosis, Bayesian and other spores and other primary echinococcosis echinococcosis have some effect.
(B) for other intestinal parasites
In recent years, experiments have shown that nitazoxanide in the treatment of Ascaris, Trichuris, Hymenolepis less than the cure when the effect of albendazole and praziquantel. Tapeworm in the morphology and ultrastructure of alternating observations, nitazoxanide makes undifferentiated cells vacuolization, accumulation of small droplets, micro-hair shedding. Nitazoxanide insecticidal mechanism of this amino acid is different from traditional acrylic imidazolium salts (such as mebendazole) anti-worm drugs, insect suppression does not change the killing of the situation. In addition, nitazoxanide Demodex live on the intestinal nematode, Trichuris whip and Hymenolepis nana, sheep Sihamonis tapeworm, beef tapeworm, and a short film sash shell and some intestinal tapeworms and other intestinal nematodes have effect.
(C) anti-bacterial
Nitazoxanide intractable Clostridium, Helicobacter pylori has strong inhibition and killing effect. Use of refractory Clostridium infection in a rat model of determination of nitazoxanide minimum inhibitory concentration (MICs) and minimum bactericidal concentrations (MBCs), toxicity, drug resistance, etc. The results show that: nitazoxanide the MICs and MBCs with vancomycin or metronidazole up to azole similar, were 0.25 g / ml and 0.50 g / ml. But nitazoxanide treatment of infected rats survived the autopsy, no obvious toxicity or Clostridium caused by intestinal disease, which is better than that of vancomycin and metronidazole azole.
Nitazoxanide when combined with omeprazole, eradication of H. pylori has a high rate of drug resistance and will not appear. But studies have shown that nitazoxanide as a single therapeutic agent can not eradicate H. pylori.
(D) Anti-Virus
U.S. Romark Institute for Medical Research study shows that: a severe rotavirus diarrhea in children taking nitazoxanide 3 days, make their recovery time was significantly shortened.