Research Articles

2018  |  Vol: 4(2)  |  Issue: 4(March-April)  |
Phytochemically analyzed Chaste tree leaves extracts involving some catheter-associated urinary tract infection causing bacteria

Aashaq Hussain Allaie1, Ravi Prakash Mishra1*, Aijaz Ahmad Ganaie1, Shoket Ali1, Ranu Singh2

1Environmental Biotechnology Lab. Department of P.G. Studies & Research in Biological Sciences, R. D. University, Jabalpur, India

2Department of Botany and Microbiology Mata Gujri Mahila Mahavidyalaya (Autonomous), Jabalpur, India

*Corresponding Author

Ravi Prakash Mishra

Environmental Biotechnology Lab. Department of P.G. Studies & Research in Biological Sciences, R. D. University, Jabalpur, (M.P.) India


Objective: To make scientific validation of the ethanomedicinal Vitex negundo (Jacq.) in relation to urinary disorders. Methods: Antibacterial study was carried out on clinically isolated Catheter-associated urinary tract infections (CAUTI) infecting bacteria by disc diffusion method. Results: Among the two extracts tested against three different Catheter-associated urinary tract infections (CAUTIs) bacteria, methanolic extract was effective against E. coli with highest inhibition zone (27 mm) followed by P. aeruginosa with inhibition zone (20 mm) and K. pneumoniae with inhibition zone (19 mm), while, hexane extract also shows highest  effective against E. coli with inhibition zone (29 mm) followed by P. aeruginosa with inhibition zone (23 mm) and K. pneumoniae with inhibition zone (16 mm). Preliminary phytochemical screening shows the presence of phytoconstituents viz alkaloids, glycosides, saponins, carbohydrates, proteins, amino acids, flavonoids, steroids, tannins. Conclusion: Based on the present study, along with previous studies, the ethanomedicinal use of Vitex negundo for the treatment of CAUTI has been scientifically validated.

KeywordsVitex negunda, Phytochemical, Chaste tree, CAUTI


The most common healthcare-associated infection is catheter-associated urinary tract infections which occur in patients after insertion of catheter and accounts for 30% to 40% of all the hospital acquired infections (Conway and Larson, 2012; Jaggi and Sissodia, 2012). Catheter associated urinary tract infections (CAUTI) are major concern as one of the nosocomial infections. Insertion of catheter in patients greater than 7 days accounts infection up to 25% and increases to 100% after 30 days (Jaggi and Sissodia, 2012). Catheter-associated urinary tract infections (CAUTIs) are among the most common hospital-acquired infections worldwide, accounting for >1 million cases in the United States and Europe annually (Tambyah and Oon, 2012; Zarb et al., 2012). Catheter associated urinary tract infections (CAUTI) account for more than 80% of all healthcare associated infections (HAIs) as compared to non-catheterized urinary tract infections (Saint and Chenoweth, 2003; Weber et al., 2011). The infection that occurs with an indwelling Foley’s urinary catheter within 48 hours is a catheter-associated urinary tract infection (Conway, and Larson, 2012). Most common pathogens associated with CAUTI are Escherichia coli, Klebsiella pneumoniae, Enterobacter species, Proteus species, Pseudomonas aeruginosa, S. saprophyticus, and Candida species

The growing antibiotic resistance amongst the uropathogen isolated from CAUTI making difficult for its management. Thus, indwelling urethral catheter use is exceedingly common in health care facilities. Prevention of infections attributable to these devices is an important goal of health-care infection prevention programs.

The plant Vitex negundo of Verbenaceae family is commonly known as Nirgundi (Hindi) and five leaved chaste tree (English), and Nirgundi in Sanskrit, is a woody, aromatic shrub growing to a small tree. The plant is found throughout India, tropical Africa, China and Philippines (Kirtikar and Basu, 2008). It is used in all systems of treatment – Ayurveda, Unani, Siddha, Homeopathy and Allopathy since ancient times. It is taken in a variety of ways, both internally and externally. Although all parts of Vitex negundo are used as prescription in the indigenous arrangement of pharmaceutical, the leaves are the most intense for medicinal use (Kirtikar and Basu, 1984; Samy et al., 1998; Kirtikar and Basu, 2008; Nadkarni, 2002; Sharma et al., 2005). Lagundi tablets prepared from leaves of V. negundo, and commercially marketed as Ascof® (Rose Pharmacy, Mandaue, Philippines) are prescribed for the relief of mild to moderate bronchial asthma and cough (Tiwari and Yamin, 2007). The leaves are most potent and numerous therapeutic properties for medicinal use. Hence, the basic aim of the present study was executed to explore the subjective investigation of phytochemicals and antibacterial properties of methanolic and hexane extracts of Vitex negundo Linn against uropathogens.

Material and methods

Collection and preparation of the plant material

The plant was selected based on reports of its widespread use among the local communities in Jabalpur region. Identification of the plant was done at the Biological Sciences department of R. D. University Jabalpur. The plant was identified on morphological basis as per description given in the literature (Roy et al., 1992; Moberly, 2008; Singh, 2014). After collection, the leaves were sun dried for 7 days and pounded using pestle and mortar and stored at 35 - 37°C until required.

Extraction procedure

Twenty five grams powdered leaves were taken with 250ml of methanol and hexane solvents for 12h at 30 °C temp. in soxhlet apparatus and then filtered using Whatman No.1 filter paper. The filtrate evaporated to dryness using rotary evaporator and the resultant extract stored in a reagent bottle at 4 –8°C.

Phytochemical analysis

The phytochemical screening for the crude methanolic and hexane extract of V. negundo was carried out by standard protocols Raman (2006) and Harbone (2005). The presence of alkaloids, glycosides, saponins, carbohydrates, proteins, aminoacids, flavonoids, steroids, tannins was detected as shown in Table 3.

Isolation and Identification of CAUTI bacteria

The microorganisms present in urine samples of CAUTI infected patients were cultured in the nutrient broth and were differentiated using the gram staining procedure into gram positive and gram negative organisms.

The organisms were transferred to cystine lactose electrolyte deficient (CLED) agar medium for further differentiation of urinary organisms. Urine samples were shake well in their containers for even distribution of bacteria. A calibrated wire loop with internal diameter 3.26mm that hold 0.004 ml of urine was inoculate into the above media. The inoculums were spread with the wire loop on the media plate. Plates were incubated aerobically at 37°C for 24 hours. Six biochemical tests were performed for each organism. Catalase activity, indole production test, citrate utilization test and urease test were done as given in Table 4.

Antibacterial Activity

The antibacterial efficacy of methanolic and dichloromethane leaves extract of Vitex negunda was tested by disc diffusion method (Bauer et al., 1966). Solution of known different concentration viz 25%, 50% and 75% of the test samples in calculated volume of solvents dried and sterilized filter paper discs (6mm diameter) were then impregnated with known amount of the test substances using micropipette. Discs containing the test microorganisms. Standard antibiotic (Ciprofloxacin) disc was used as a positive control. These plates were then kept at low temperature (4 °C) for 24 h to allow maximum diffusion. There was a gradual change in concentration in the media surrounding discs. The plates were then incubated at 37 °C for 12 h to allow maximum growth of the microorganisms. The test materials having antibacterial activity inhibited the growth of the microorganisms   and a clear, distinct zone of inhibition was visualized surrounding the medium. The antibacterial activity of the test agent was determined by measuring the diameter of zone of inhibition expressed in millimeter.

Results and Discussion

A total of 200 patients of all age group clinically diagnosed as catheter associated urinary tract infection (CAUTI) were studied to isolate bacteria from urine. Out of 200 CAUTI 60 (62%) were culture positive.

Table 1. Distribution of culture by CAUTI

Type of UTI

Urine cultured

Culture positive cases






Among the samples analyzed and data obtained by the patients of CAUTI it could be assessed that both male and female are equally effected for the above infection i,e the total number of male and female CAUTI Patient was 30 (50 %).

The organism mostly isolated from CAUTI patients was depends on duration of catheterization before 1 week of catheterization E. coli 9(9%) followed by Klebsiella species 05(5%), and Pseudomonas aeruginosa 03(3%) after one week of catheterization isolation of all pathogens increased.

Table 2. Distribution of microorganisms varies in relation to the duration of catheter

Isolated organism

<1 week(Sample 100Patient’s)

>1 week(Sample 100 Patient’s)

E. coli



P. aeruginosa



K. pneumoniae






Figure1. Distribution of microorganisms varies in relation to the duration of catheter


The phytochemical screening of the Vitex negundo leaf extract in the present study revealed strong to moderate presence of different active constituents (secondary plant metabolites) like alkaloids, amino acids, flavonoids, tannins, glycosides, steroids, carbohydrates and proteins as shown in table 3

Table 3. Preliminary phytochemical screening of leaves of Vitex negundo

Name of the test

Methanol Extract

Hexane  Extract





+ +






+ +




+ +






+ +




+ =  indicates  presence, - = indicates absence, ++ = indicates presence of  higher concentrations

The bacterial isolates were identified by biochemical tests shown in table 4.

Table 4. Biochemical tests of recovered clinical isolates






Organism confirmed






E. coli






P. aeruginosa






K. pneumonia

+= positive, - = negative

The results of inhibitory effect of methanolic and hexane leaf extract of V. negunda are shown in Table 5.

Table 5. Antibacterial activity extract of Vitex negundo against selected CAUTI pathogens

Concentration of extract (mg/ml)

E .coli

K. pneumoniae

P. aeruginosa

Methanolic extract

Hexane extract

Methanolic extract

Hexane extract

Methanolic extract

Hexane extract






















Standard Ciprofloxacin




Figure 2. Sensitivity pattern of leaf extract of V. negundo against some CAUTI causing Bacteria


The results indicate that three bacterial species exhibit different sensitivities towards the extract. The extract was found to be inhibitory to both bacterial isolates but with variable extent. The order of activity against selected bacteria was E. coli> P. aeruginosa> K. pneumoniae     

Figure 3. Antibacterial action of (a) methanolic leaf extract and (b) hexane extract of V. negundo leaves against P. aeruginosa


In the present study, the Vitex negundo methanolic and hexane leaf extract effectively inhibited both bacteria tested. The results of the sensitivity test are shown graphically in (Figure  4).The zone inhibition values of the extract against tested   bacteria ranged from 11 to 32 mm. It is clear from table as the concentration increases inhibition zone increases in all cases. All the bacterial species shows highest activity at higher concentration of extracts E. coli shows 27 and 29 mm, P. aeruginosa 20 and 23 while as Klebsiella pneumonia 19 and 16  at 75mg/mL against methanol and hexane, whereas at minimum concentration shows (13&15mm), (14&11mm) and (11&10 mm) at 25mg/ml respectively. The methanolic extract exhibited maximum activity against E. coli (32 mm) followed by P. aeruginosa (20 mm). The results in the present study indicate that the antibacterial activity varies according to type of bacteria used for the study. The least activity was exhibited by Klebsiella pneumonia with the smallest zone (10mm). The diameters of the zones of inhibition by the addition of V. negundo extract is shown in table. The diameters of the zones of inhibition with the standard drug used were 41 mm, 44 mm and 40 mm for the three strains respectively. The studied extracts showed a remarkable antibacterial activity against Escherichia coli, Pseudomonas aeruginosa, and, Klebsiella pneumonia. Although, the mechanism of action of the extracts has not yet been elucidated in detail, the presented data confirm in vitro antibacterial activity of extract of V. negundo against UTI causing bacteria. The overall incidence of CAUTI was 4.9 per 1000 catheterized days in another report. The most common uropathogen was E. coli followed by K. pneumoniae. The development of CAUTIs has been directly linked to the duration of catheterization; nearly 100% of patients undergoing long-term catheterization (≥ 28 days) are found to develop catheter associated bacteriuria (CAB) (Armbruster and Mobley, 2012; Siddiq and Darouiche, 2012; Jacobsen et al., 2008). Medicinal plants have provided copious leads to combat diseases, from the dawn of civilization. Herbal medicines are in great demand in the developed as well as developing countries for primary healthcare because of their wide biological and medicinal activities, higher safety margins and lesser costs. The extensive survey of literature revealed that Sinduvara (Vitex negundo) is important medicinal plant with diverse pharmacological spectrum. The presence of secondary metabolites like tannins, saponin, carbohydrates, glycosides, alkaloids, flavonoids, terpenoids, steroids, polyphenols and anthraquinones of vitex negundo suggests that the plant might be of medicinal importance and supports the bases for some of the ethno-uses (Raama and Venkataraman, 2010). The presence of tannins shows that the plant is astringent as documented and suggests that it might have antiviral and antibacterial activities and can aid in wound healing and burns (Haslem, 1989).


The results from the current study indicate that Vitex negundo (L) leaves contained various types of compounds with potential pharmacological activity against bacterial pathogens associated with CAUTIs. Further research work involving more detailed in vitro and in vivo investigations is required to establish which components of the extract are biologically active in terms of antibacterial activity versus CAUTI causing pathogens. The isolation of bioactive components from this readily available natural resource and their utilization as potential natural antibacterial agents could be of high economic value.


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