CHAPTER 3 LITERATURE REVIEW
Ravi Sharma,et,al., A simple reverse phase liquid Chromatographic method has been developed and subsequently validated for simultaneous determination of Pioglitazone and Glimepiride in combination. The separation was carried out using a mobile phase of phosphate buffer (pH-4.5): Acetonitrile (45:55) v/v and using methanol as diluent. The column used was Inertsil ODS (250 mm x 4.6 mm i.d., 5μm) with flow rate of 1 ml/min using UV detection at 225 nm. The described method was linear over a concentration range of 5-50µg/ml and 5-25 µg/ml for the assay of Pioglitazone and Glimepiride respectively. The retention times of Pioglitazone and Glimepiride were found to be4.6 and 7.7min respectively. Results of analysis were validated statistically and by recovery studies. The results of the study showed that the proposed RP-HPLC method is simple, rapid, precise and accurate, which is useful for the routine determination of Pioglitazone and Glimepiride bulk drug and in its pharmaceutical dosage form.
Sujatha Samala,et.al.,
A simple and sensitive reverse phase high performance liquid chromatography (RP-HPLC) method was developed for the determination of glimepiride in rat serum. The assay involves one step liquid-liquid extraction with methanol. Gliclazide was used as an internal standard. Chromatographic separation was performed on a C18 column using a
AIM: To extract codeine and paracetamol from its tablet by solvent extraction and tentatively identify in comparison to standards using Thin Layer Chromatography.
Based on the Rf value for unknown, aspirin, acetaminophen, ibuprofen, salicylamide, and caffeine were 0.2612, 0.2581, 0.0476, 0.5714, 0.3, 0.0714. The second hypothesis was like initial hypothesis that the possible components contain in the unknown drug were aspirin, and salicyamide, the possible drug was aspirin, but cannot for sure what the unknown was. Because the drug that contain salicylamide, but didn’t contain the caffeine component which didn’t show up in this case. The drugs list in the chart, none of the drug contains the component aspirin, and salicyamide at the same time. Based on the Rf value and the observation, the lab experiment wasn’t accurate and some error was occurred during the lab period.
Why do we still get scared if we know deep down that the things that are scaring us are fake? In the article “Why Do Some Brains Enjoy Fear” by Allegra Ringo, …, and even one of my own experiences, we find out how our imagination interferes with our reality to give us more of a fight. Much of being scared comes from past experience, where you are, or even the sounds you hear.
The influence of various substances as compounds potentially interfering with the determination of risperidone was studied under optimum conditions with 300.0 μM risperidone at pH 7.0. The potentially interfering substances were determined from the group of substances commonly detected with risperidone in pharmaceuticals. The tolerance limit was specified as the maximum concentration of the interfering substance that caused an error of less than ±5% in the measurement of risperidone. According to the results, neither a 1000-fold excess of methanol, ethanol, NH4 +, Fe2+, Fe3+, Mg2+, Fe2+, Fe3+, SO42−, Al3+, SO42−NH4 +, Fe2+, Fe3+, CO32−, Cl− or F−, CO32−, alanine, phenylalanine did not affect the selectivity, nor a 50-fold excess of levodopa, carbidopa, methyldopa, epinephrine, norepinephrine and methylphenidate interfered with the determination of risperidone.
It is also known to cause drug interaction in dose dependence manner, single and multiple dose of 30mg did not affect the elimination or area under the curve (AUC) of diazepam 10mg, tolbutamide 1000mg or chlorothiazide 500mg, or of secobarbitone (secobarbital) 150mg, but 60mg prolonged the elimination of diazepam, but physiological responses to diazepam were unaffected (3). Also, fluoxetine might have enhanced the toxic effects of other drugs, such as, cocaine because of its weak pro-arrhythmogenic properties (10). Therefore, the concentration of fluoxetine and norfluoxetine is important.
The scientists Ms. Volk has on her team have eminent credentials in chemistry, biochemistry and biology. Today, Mrs. Volk spoke to our class about three different types of methodologies, matrices used in drug testing, and drug trends. The 1st methodology is screen methodology (instant testing) which is an immunoassay based test applied to all samples. The second step, known as the confirmation test, is usually undertaken by a laboratory using highly specific chromatographic techniques and only applied to samples that test positive during the screening test. After a suspected positive sample is detected during screening, the sample is tested using a confirmation test. Confirmation test in most laboratories is performed using mass spectrometry, and is precise but
In the article, “A simple and cost-effective HPLC-UV method for the detection of levetiracetam in plasma/serum of patients with epilepsy,” by Engelbrecht, Grobler and Rheeders, the concentration of levetiracetam was determined using HPLC with a diode array detector. Levetiracetam is a common treatment for epilepsy. Patients have to go through regular blood tests to ensure the drug is working to optimal efficiency and is not taken in toxic levels. For the experiment, the researchers used and Agilent 1200 HPLC with a degasser, binary pump, thermostatic oven and diode-array detector with varying wavelengths. The column used was a Venusil XBP C18, 250 x 4.6 mm, and 5 µm particle size. The column was protected by a guard precolumn with a graphite filter. The flow rate of the mobile phase was 1 mL/min. The mobile
. Troglitazone is the first agent of this class used for the treatment of type2 DM were initially introduced into the US market in 199620. While in 2000, troglitazone was never be used for long after it was found that idiosyncratic hepatic failure25. Two other TZDs, rosiglitazone and pioglitazone both are introduced in 1999, which are currently on the market in single and combination with other diabetes drugs.
1. What do you think a peer leader does? What kind of qualities should a peer leader
The liver is the primary organ for drug metabolism. Any diseases that directly affect on the liver can alter this process. Some alteration can cause a drug to have more bioavailability, which can cause toxic effects. Cirrhosis and obstruction jaundice appear to decrease hepatic metabolism and decrease drug excretion. Another organ function needs to be considered for drug metabolism is thyroid glands. The activity of metabolizing enzymes in decrease with hypothyroidism and increase with hyperthyroidism. Impaired liver functions significantly increase the risks if adverse drug effects. Acute liver impairment interferes with drug metabolism and elimination, while chronic liver impairment affects all aspects if pharmacokinetic. Consequently, dosage should be reduced for drugs that are extensively metabolized by the liver. The practitioner needs to assess the degree of hepatic impairment. Starting therapy with lower doses and monitor liver function
In this article, antidepressant medication (ADM) is described as the most commonly used treatment for severe depression and cognitive therapy (CT) is the most talked about treatment that could be used for severe depression. Although, some patients do not want to take ADMs daily and CT is still being studied as a treatment option for major depression disorder. There was another alternative therapy treatment that was being questioned, behavioral activation therapy. The primary objective of this study was to test the effectiveness of behavioral activation therapy towards adults with major depression disorder. For this study, behavioral activation was studied with cognitive therapy and antidepressant medications in a placebo controlled randomized
There are many different drugs that are associated with the use of PPIs such as Lansoprazole (Prevacid, Prevacid IV, Prevacid 24-hour), Rabeprazole (Aciphex), Omerprazole (Nexium, Nexium IV, Nexium 24-hour), aspirin and omeprazole (yosprala), omeprazole/sodium bicarbonate (Zegerid, Zegerid OTC),
Does antidiabetic medication create a possible risk for increased cognitive decline in older adults? In 2013, over 5 million older adults were estimated to have some form of cognitive decline, and it was estimated that 29.5 million older adults have type 2 diabetes. This is the largest increase for adults 65 and older in the United States (Alzheimer’s, 2015). As people continue to live longer the increase of type 2 diabetes in skilled nursing facilities has also grown from 16 to 23 percent (Zhang, 2010). Although, medications are used and needed for both conditions, type 2 diabetes can be a self-care and controllable disease through diet and increased exercise, yet cognitive decline only worsens over time.
Preconception care is the care a woman receives before she gets pregnant. Prenatal care is medical care you get when you’re pregnant, so you can recognize the different between the two. Both of them are important for the health of both the mother and the fetus. A preconception checkup helps your health care provider make sure that your body is ready for pregnancy. Prenatal care can help keep you and your baby healthy. It lets your health care provider spot health problems early. Early treatment can cure many problems and prevent others. Your doctor or midwife will give you a schedule for your prenatal visits. If you are over 35 years old or your pregnancy is high risk because of health problems like diabetes or high blood pressure, your doctor or midwife will probably want to see
Modulating effects of omega-3 fatty acids and pioglitazone combination on insulin resistance through toll-like receptor 4 in type 2 diabetes mellitus