This study was designed primarily to determine the effect Periwinkle Plant on spatial learning among rats. In the experiment, this study intend to know the effect of tea made Periwinkle Plant on the spatial learning on escape... more
This study was designed primarily to determine the effect Periwinkle Plant on spatial learning among rats. In the experiment, this study intend to know the effect of tea made Periwinkle Plant on the spatial learning on escape latency of 3-4 month-old rats measured on the water maze. Total of six (6) albino rats (Rattus norvegicus), purchased from a local pet shop were the subjects of this study. In addition, they were randomly assigned into two (2) treatment levels- a1 as the experimental group and a2 as the control group, having three (3) subjects per group. The result showed that across the three (3) period of test, Test 1 revealed that experimental group (rats that administered with periwinkle plant) seemed to have the highest latencies (mean=16.94), and the control group (rats without treatments) seemed to have lowest latencies (mean=39.14). Test 2, the experimental group spent highest again (mean=15.65), while the control group spent the lowest (mean=45.45). Furthermore, results from test 3 showed that subjects under experimental group were the fastest swimmer (mean=12.08), while subjects under the control group was the slowest swimmers (mean=29.35). Overall, the experimental group has the highest latencies across the three tests (mean=44.67) and the control group (mean=113.94) has the lowest latencies across the three tests. Using SPF-2.3 design, the ANOVA showed that there is highly significant between escape latencies of two treatment levels (A) [(SPF-2.3)= 264.83>21.20 at 0.01 level] in three tests. It implies that the Periwinkle plant tea can affect the spatial learning of rats in escape latencies. The rats with treatment of periwinkle plant tea are faster in running time across the three running sessions in the water maze task than rats without treatment.
Various lipid classes and compounds were monitored during the period of leaf emergence to leaf drop of Catharanthus roseus. The expansion to early maturation phase was accompanied by cellular build-up of all major lipid classes, whilst... more
Various lipid classes and compounds were monitored during the period of leaf emergence to leaf drop of Catharanthus roseus. The expansion to early maturation phase was accompanied by cellular build-up of all major lipid classes, whilst aging and senescence were characterized by their substantial decline, except for the neutral lipids; the leaf monogalactosyl diglyceride/digalactosyl diglyceride ratio decreased from 4.3 (complete maturity) to 2.1 (abscised stage). The early maturation stage was the earliest stage when appreciable amounts of free sterols and fatty acids could be observed. Sterol/phospholipids ratios increased by 68-fold in the abscised leaf as compared to that at full maturity. The unsaturated/saturated fatty acid ratio was far lower in the senescent leaf as compared to that of the fully expanded leaf. The spatial alterations in lipid profiles may be suggestive of concomitant changes in membrane ultrastructure and functions, putatively leading to perturbation of indol...
