The phrase "a significant decrease in the levels" is correct and usable in written English.
It can be used when discussing changes in quantities or measurements, particularly in scientific, economic, or statistical contexts.
Example: "The study revealed a significant decrease in the levels of pollutants in the river after the new regulations were implemented."
Alternatives: "a notable reduction in the amounts" or "a marked decline in the quantities".
Pretreatment with lycopene (1.86, 9.31 and 18.62 μM) showed a significant decrease in the levels of TBARS and DNA damage.
Pretreatment with NAC showed a significant decrease in the levels of MDA, NO x) and DNA damage.
A significant decrease in the levels of sérum protein, tissue K+ ion, vitamin E level, and the activities of Na+/K+-ATPase and mg+ 2-ATPase was observed.
A significant decrease in the levels of T3 and T4 has been recorded after 30 days of TBT administration when compared with both the control and the TBT+ GTE groups (Tables 1 and 2).
In accordance with the present results, Wu, Xu, Shen, Qiu, and Yang (2011) showed a significant decrease in the levels of GSH and SOD in BPA group; this decrease indicated liver tissue damage.
The chromatogram obtained from HPLC/UV vis method, at 460 nm showed larger peaks of iron (III)–thiocyanate complex, suggesting a significant decrease in the levels of phytic acid in transgenic seeds as compared to the non-transgenic control which exhibited smaller peak, signifying higher concentration of phytic acid in seeds.
Enhanced lipid peroxidation in circulation of tumour-bearing animals was accompanied by a significant decrease in the levels of ascorbic acid, vitamin E, reduced glutathione (GSH) and the GSH-dependent enzymes glutathione peroxidase (GPx), glutathione S-transferase (GST) and glutathione reductase (GR).
Oral administration of naringin (10, 20 and 40 mg/kg, respectively) to ISO-induced rats daily for a period of 56 days showed a significant decrease in the levels of lipid peroxidative products and improved the antioxidant status by increasing the activities of antioxidant enzymes and nonenzymatic antioxidants.
Interestingly, on administration of fucoxanthin along with cadmium chloride-intoxicated rats were found a significant decrease in the levels of blood urea nitrogen, creatinine, lipid peroxidation and an increase in the levels of renal antioxidant enzymes which inevitably confirms that Fxn has a prominent role in preventing the renal damage during treatment.
A significant decrease in the levels of anti-dsDNA and anti-ribosomal P antibodies was observed at six months.
Mononuclear cells from FK866-treated animals exhibited a significant decrease in the levels of intracellular pyridine dinucleotides (Figure 8A).
