Phytochemical and pharmacological investigations of different extracts of leaves and stem barks of Macropanax dispermus (Araliaceae): a promising ethnomedicinal plant

Background Macropanax dispermus is traditionally used to treat various diseases by ethnic people. The present research reports the pharmacological properties with phytochemical profiling of the crude extracts of M. dispermus leaves (MDML), its n-hexane (MDHL), carbon tetrachloride (MDTL), chloroform (MDCL), ethyl acetate (MDEL), and aqueous (MDAL) fractions, and crude methanol extracts of its stem barks (MDMS). The in vitro thrombolytic activity was done on human erythrocytes whereas the cytotoxic activity was done by brine shrimp lethality assay. The in vivo analgesic activity was examined by acetic acid-induced writhing, tail immersion, and formalin-induced paw licking method. In contrast, antipyretic activity was done by the brewer’s yeast-induced pyrexia method. Results MDHL and MDMS showed 37.05% and 42.21% of significant (p < 0.01) thrombolytic activity, respectively. MDCL and MDMS showed the lower LC50 values of 23.15 and 37.11 µg/ml during cytotoxicity test, respectively. In acetic acid writhing method, MDTL and MDEL showed significant (p < 0.001) inhibition of writhing by 79.34% and 80.17%, respectively. MDMS showed significant (p < 0.001) maximal possible effect (%MPE) of 45.95%, 62.26%, 65.79%, 89.69% and elongation of time in pain reaction of 48.53%, 60.28%, 58.76%, and 70.14% at 30, 60, 90, and 120 min intervals, respectively. MDML at 400 mg/kg exhibited significant (p < 0.001) 82.72% of inhibition of pain at the late phases. MDEL at 400 mg/kg of dose exhibited significant (p < 0.001) reduction of rectal temperature by 36.31%, 62.42%, 89.81%,, and 96.82% at 1, 2, 3, and 4 h intervals, respectively. Conclusion The current research suggests that the plant extracts possess potential thrombolytic, cytotoxic, analgesic, and antipyretic activities.

EVALUATION OF THE ANALGESIC ACTIVITY OF AQUEOUS AND ALCOHOLIC EXTRACT OF FLOWERS OF PLUMERIA ALBA LINN IN EXPERIMENTAL ANIMALS

Objective: Plumeria alba (Apocynaceae), commonly known as “Frangipani” is an important medicinal plant, widely distributed throughout Southern India. In the traditional medicinal system, different parts of this plant have been mentioned to be useful in a wide variety of diseases. In this study, analgesic activity of aqueous and alcoholic extract of flowers of P. alba Linn was evaluated by hot-plate and acetic acid-induced writhing methods to substantiate and expand its clinical applications. Methods: The flowers of P. alba were collected from the local area in and around Coimbatore (India). The flowers were dried, powdered, and were extracted using soxhlet apparatus for 12 h using water and 95% of ethanol as a solvent. The test extracts were administered orally at a dose of 100 & 200 mg/kg while diclofenac sodium (10 mg/kg) served as standard. Results: The ethanolic flower extract of 200 mg/kg had significant analgesic activity in acetic acid-induced abdominal writhing response (***p<0.001) when compared to control and standard drug diclofenac. It also exhibited significant analgesic activity (***p<0.001) by increasing the pain reaction time of the rats in comparison to control and standard in hot plate method. Conclusion: The results suggest that ethanolic flower extracts of P. alba possess potent analgesic properties, which support its use in traditional medicine and suggesting that the plant should be further investigated for its pharmacological active natural products.

ANTINOCICEPTIVE ACTIVITY OF MAGNOLIA GRANDIFLORA LINN. LEAVES

Magnolia grandiflora (Magnoliaceae) is an evergreen tree with fragrant and showy flowers native to southeastern USA but widely cultivated all over the world and used in cosmetics industry in treatment of skin diseases. To estimate the different extracts of Magnolia grandiflora leaves by performing pharmacological screening of analgesic activity (Hot plate method and tail immersion method). In the present study the two methods were performed the mice was placed on a hot plate maintained at the temperature of 55 ± 1°C and the pain reaction time (PRT) or latency period determined with a stop watch was recorded and then about 2-3cm of the tail of each of the mice was dipped into a water bath containing warm water maintained at a temperature of 50 ± 1°C and the time taken for the mice to flick its tail or withdraw it from the warm water known as the pain reaction time (PRT) was recorded. Here, we report on the Pharmacological investigation of different extracts of Magnolia grandiflora Linn leaves. The results were demonstrated on that ethyl acetate extract (P < 0.01) exhibited significant dose dependent analgesic activity in all tested models for analgesia. The time course for analgesia revealed maximum activity after 30 min in both tail immersion and hot plate methods, which was prolonged to 24 hours. The study concludes that the ethyl acetate extract from leaves of Magnolia grandiflora possess analgesic activity at doses 250, 500 and 100 mg/kg I. p.

FAKTOR-FAKTOR YANG BERHUBUNGAN DENGAN REAKSI NYERI AKIBAT TINDAKAN INVASIF PADA ANAK YANG DIRAWAT

Invasive treatments to the children during the period of hospitalization cause pain reactions. The nurses need to know the factors related to pain reactions. The study aims to identify the factors related with pain reactions related to invasive treatments. The design of this study is observational research with cross sectional approach by using non probability sampling method through consecutive sampling with the amount of 90 children respondents. Multivariate data analysis use multinomial regression statistic test. The result of the analysis indicated that there was a significant relationship between fear and pain reaction (p value = 0,018). The emergence of pain reaction “avoidance” from the children who are in fear is as much 5 times greater than children who are not in fear. Nurses need to conduct nursing interventions that can reduce fear in the children behavior in order to minimize pain reaction in form of avoidance.

Low Energy Shock Wave Therapy Inhibits Inflammatory Molecules and Suppresses Prostatic Pain and Hypersensitivity in a Capsaicin Induced Prostatitis Model in Rats

The effect of low energy shock wave (LESW) therapy on the changes of inflammatory molecules and pain reaction was studied in a capsaicin (10 mM, 0.1 cc) induced prostatitis model in rats. Intraprostatic capsaicin injection induced a pain reaction, including closing of the eyes, hypolocomotion, and tactile allodynia, which effects were ameliorated by LESW treatment. LESW therapy (2Hz, energy flux density of 0.12 mJ/mm2) at 200 and 300 shocks significantly decreased capsaicin-induced inflammatory reactions, reflected by a reduction of tissue edema and inflammatory cells, COX-2 and TNF-α stained positive cells, however, the therapeutic effects were not observed at 100 shocks treated group. Capsaicin-induced IL-1β, COX-2, IL-6, caspase-1, and NGF upregulation on day 3 and 7, while NALP1 and TNF-α upregulation was observed on day 7. LESW significantly suppressed the expression of IL-1β, COX-2, caspase-1, NGF on day 3 and IL-1β, TNF-α, COX-2, NALP1, caspase-1, NGF expression on day 7 in a dose-dependent fashion. LESW has no significant effect on IL-6 expression. Intraprostatic capsaicin injection activates inflammatory molecules and induces prostatic pain and hypersensitivity, which effects were suppressed by LESW. These findings might be the potential mechanisms of LESW therapy for nonbacterial prostatitis in humans.

Endodontic Retreatment of Maxillary Second Molar with Four Roots

The present communication describes the endodontic retreatment of a rare four-rooted maxillary second molar. A 25-year-old patient was referred to our dental practice requesting an apicoectomy because of continuous and permanent pain reaction six months after the first endodontic treatment. The sent radiograph demonstrated three filled root canals (one mesial, two distal) and four radiographically superimposing roots (two mesial, two distal). Due to the diagnosed chronic apical periodontitis and based on the visible untreated root canal, we decided to endodontically re-treat the quadrangular tooth against the referred apicoectomy. In the first session, only the previously untreated mesiopalatal root canal was mechanically prepared and filled with a corticosteroid- and tetracycline-containing paste. After two symptom-free weeks, the gutta-percha was removed from the other canals and calcium hydroxide was applied. Another two weeks later, the four root canals, whose orifices were “irregular quadrilateral” shaped on the pulp chamber floor representing Versiani Type A, were obturated. After the verification of this rare anatomy by cone beam computed tomography, the tooth was classified as Christie’s radicular type II. One characteristic of this type is parallel running buccal and palatal roots, which caused a radiographic superimposition and probably led to the endodontic mistreatment in the first case.