1.Pharmacognostic evaluation of stem bark of Pongamia pinnata (L.) Pierre
Dinesh KUMAR ; Ajay KUMAR ; Om PRAKASH
Asian Pacific Journal of Tropical Biomedicine 2012;(z2):543-546
Objective: To perform the pharmacognostic study of Pongamia pinnata (L.) Pierre (P. pinnata) stem bark. Method: The pharmacognostic studies were carried out in terms of organoleptic, macroscopic, microscopic, fluorescence analysis and physicochemical parameters. Results: The bark consisting of channelled, recurved, slightly quilled, usually 0.2-1 cm thick, lenticellate pieces with outer surface ash-grey to greyish-brown and internal surface yellowish-white to cream coloured having unpleasant odour and bitter taste. The main microscopic characterstics of the bark include phellem (5-20 or more layers of cork), phellogen (2-3 layered) followed by 10-15 layered phelloderm. Among other microscopic components were phloem parenchyma, phloem fibre and stone cells, traversed by wavy medullary rays. Further, physicochemical analysis of the bark power showed total ash, water soluble ash, acid insoluble ash and sulphated ash as 10.94, 1.96, 1.47 and 15.8 % w/w respectively. The alcohol and water soluble extractives values of the stem bark were 9.6 and 18.4 %w/w respectively. Conclusions: Various pharmacognostic characters observed in this study helps in botanical identification and standardization of P. pinnata L. in crude form.
2.Citric acid production by Aspergillus niger using different substrates
Chirova Travers Kudzai ; Kumar Ajay ; Panwar Ambika
Malaysian Journal of Microbiology 2016;12(3):199-204
Aims: Citric acid is a commercially important acid that has many applications in varying sectors of industries. It is
produced by various substrates through solid state or submerged fermentation. The capabilities of potato and rice as
substrates for citric acid production using Aspergillus niger were tested in this experiment under submerged
fermentation.
Methodology and results: Potato and rice extract media were prepared and inoculated with A. niger and titrations were
carried out to determine the amount of citric acid produced. It was shown that rice extract media proved more useful
than potato extract media as it produced the highest citric acid production. Rice extract media was supplemented with
varying concentrations of glucose and sucrose and 5% sucrose (w/v) proved to be the best as it produced the highest
amount of citric acid. The rice extract media with 5% sucrose (w/v) were supplemented with varying concentrations of
ammonium nitrate and ammonium sulphate and 0.25% ammonium nitrate proved more effective in citric acid production.
A low pH (1.9-2.3) was found during the maximum production of citric acid.
Conclusion, significance and impact of study: The results depict that potato and rice extract media can produce citric
acid, hence providing an alternate substrate for citric acid production.
Citric Acid
3.A review of chemical and biological profile of genus Michelia.
Dinesh KUMAR ; Sunil KUMAR ; Seema TAPRIAL ; Deepak KASHYAP ; Ajay KUMAR ; Om PRAKASH
Journal of Integrative Medicine 2012;10(12):1336-40
The genus Michelia, belonging to family Magnoliaceae, consists of about 80 plant species mainly distributed in South Asian countries. The plants of this genus have been traditionally used in curing various diseases like fever, colic, leprosy, eye disorders, inflammation, antidote for scorpion, etc. Ninety-four compounds isolated from nine species of the genus Michelia like sesquiterpenes, steroids, flavonoids, aporphines, phenols, esters, benzenoid and alkaloids have antibacterial, anticancer and antiplasmodial activities. This review presents first time detailed information on chemical and biological properties of constituents isolated from the genus Michelia.
4.Pharmacognostic evaluation of leaf and root bark of Holoptelea integrifolia Roxb.
Dinesh KUMAR ; Karunesh KUMAR ; Sunil KUMAR ; Tarun KUMAR ; Ajay KUMAR ; Om PRAKASH
Asian Pacific Journal of Tropical Biomedicine 2012;2(3):169-175
OBJECTIVETo evaluate the pharmacognostic characters of an important medicinal plant, Holoptelea integrifolia (H. integrifolia) Roxb.
METHODSThe pharmacognostic studies were carried out in terms of organoleptic, microscopic, macroscopic and fluorescence analysis.
RESULTSThe characteristic microscopic features of leaves were observed as trichomes, multicellular trichomes, xylem cells, phloem cells, collenchyma, vascular bundles, spongy parenchyma and palisade cells. The characteristic microscopic features of root bark included cork cambium, primary cortex, phloem fibers, medullary rays, endodermis, pericycle and lignified fibers in the transverse section and longitudinal section. The characteristic microscopy of root bark powder showed the presence of cortex cells, sieve tubes, calcium oxalate crystals and lignified fibers. Macroscopic study showed that leaf shape-oval, apex-acute, base-cordate and leaf margin was entire with glabrous surface, bitter taste and characteristic odour. The morphological features of root bark showed deep fissured, rough and firm surface with rhitydome and the periderm parallel to cambium.
CONCLUSIONSVarious pharmacognostic characters observed in this study help in the identification and standardization of H. integrifolia.
Microscopy ; Plant Extracts ; chemistry ; Plant Leaves ; anatomy & histology ; cytology ; Plant Roots ; anatomy & histology ; cytology ; Spectrometry, Fluorescence ; Ulmaceae ; anatomy & histology ; cytology
5.Probiotics:A review
Kamlesh SINGH ; Basavaraj KALLALI ; Ajay KUMAR ; Vidhi THAKER
Asian Pacific Journal of Tropical Biomedicine 2011;(z2):287-290
The field of probiotics is an evolving field. Probiotics were first introduced to the world as a functional ingredient in dairy products, breakfast cereals and snacks. Unknown to many, probiotics offer health benefits that go beyond the scope of supporting digestive health. Research continues to emerge, supporting the use of different probiotic strains in a variety of conditions. The research now suggests that these“healthy”bacteria have beneficial effects on gastrointestinal dysfunctions, including diarrhea, as well as the immune system and conditions such as allergy, in children, adults, and in the oral cavity. Research on the horizon will develop a better understanding of the concepts of how colonizing microbes and probiotics can influence human health.
6.Neglected reverse Essex-Lopresti injury with ulnar nerve compression.
Ajay-Pal SINGH ; Ish-Kumar DHAMMI ; Anil-Kumar JAIN
Chinese Journal of Traumatology 2011;14(2):111-113
A 45 year old woman was diagnosed as having anteromedial radial head dislocation and distal radius fracture five months after her injury on right forearm. The radial head dislocation led to ulnar nerve compression. She had severe restriction of her elbow movements. She was treated with arthrolysis, decompression of the ulnar nerve and radial head resection. The reverse Essex Lopresti injury and radial head dislocation compressing the ulnar nerve has not been reported in English language literature to the best of our knowledge. A mechanism is proposed for the injury. In acute presentations, restoration of both the radioulnar joints should be done and neglected nature of such injury leads to suboptimal outcomes.
Female
;
Humans
;
Joint Dislocations
;
complications
;
Middle Aged
;
Radius
;
injuries
;
Radius Fractures
;
complications
;
Ulna
;
injuries
;
Ulnar Nerve Compression Syndromes
;
etiology
7.Comparison of Radiological and Clinical Outcomes between Expandable and Non-expandable Cages Following Cervical Corpectomy: A Systematic Review and Meta-analysis
Anand Kumar DAS ; Devendra Kumar PUROHIT ; Ajay GUPTA ; Rashim KATARIA
Asian Spine Journal 2023;17(3):567-581
Anterior cervical corpectomy and fusion is considered the mainstay of surgical treatment in cervical pathology. Expandable and nonexpandable cages are preferred over autogenous bone graft because of donor-related morbidity. However, the choice of the cage type remains a debatable topic as studies report conflicting results. Thus, we evaluated the outcomes of expandable and non-expandable cages following cervical corpectomy. Studies were searched in various electronic databases (MEDLINE, PubMed, EMBASE, CINAHL, Scopus, and Cochrane) between 2011 and 2021. Forest plot was made to compare the radiological and clinical outcomes between expandable and non-expandable cages following cervical corpectomy. Altogether, 26 studies (1,170 patients) were included in the metaanalysis. The mean change in segmental angle was significantly greater in the expandable cage group than in the non-expandable cage group (6.7° vs. 3.0°, p <0.001). The mean subsidence rate was lower in the expandable cage group (6% vs. 41%, p <0.001). The mean fusion rate was lower (93% vs. 98%, p =0.06) and the mean displacement rate was significantly higher in the expandable cage group (29% vs. 5%, p <0.05). The mean reoperation rate was higher in the expandable cage group (16% vs. 2%, p >0.05). The improvement in segmental angle is better with expandable cages. Higher subsidence is a major problem with non-expandable cages, but it seems to be beneficial as evidenced by the high fusion rate and minimal effect on clinical outcome in patients with this cage.
8.In-vitro cancer cell cytotoxicity and alpha amylase inhibition effect of seven tropical fruit residues
Gupta Priti ; Bhatnagar Ira ; Kim Se-Kwon ; Verma Kumar Ajay ; Sharma Anubhuti
Asian Pacific Journal of Tropical Biomedicine 2014;(z2):665-671
Objective:To determine quantitative phytochemical, anticancer and antidiabetic effect of seven Indian tropical fruit residues.
Methods:In-vitro cytotoxic activity (IC50) was evaluated against cervical cancer cells (HeLa), breast cancer cells (MCF-7), hepatocellular carcinoma cells (HepG-2) and bone sarcoma cells (MG-63) and alpha amylase inhibition assay was used for antidiabetic activity.
Results: Results of phytochemical analysis revealed that all residues contained remarkable amount of alkaloid, saponin, tannin and flavonoid. Notable cancer cell growth inhibition was observed for the extract from Carissa carandas pomace and Litchi sinensis seeds with IC50 values ranged from 56.72 to 89.24 μg/mL. Alpha amylase inhibition assay was measured at six different concentrations (5, 10, 25, 50, 100 and 200 mg/mL) by using different solvent extract. Results showed that Carissa carandas possessed best activity with IC50 value as 29.66 mg/mL followed by other residues in methanol extract.
Conclusions:Study suggests that these fruit residues demonstrate promising antidiabetic and anticancer activity that substantiated its ethno medicinal use and may provide new molecules for the treatment of these diseases.
9.Role of ascorbic acid in dapsone induced methemoglobinemia
Kamal Kant SAHU ; Ajay Kumar MISHRA
Clinical and Experimental Emergency Medicine 2019;6(1):91-92
No abstract available.
Ascorbic Acid
;
Dapsone
;
Methemoglobinemia
10.Spontaneous Rectal Perforation with Transanal Evisceration of the Small Bowel: A Rare Case Report
Ajay Kumar PAL ; Prasoon KUMAR ; Dhirendra YADAV ; Awanish KUMAR ; Harvinder Singh PAHWA ; Krishna Kant SINGH
Journal of Acute Care Surgery 2022;12(2):74-76
Transanal evisceration of the small bowel is a rare surgical emergency. Rectal perforation in such cases is usually due to an underlying rectal prolapse. We report a case of a middle aged (45 years) male with spontaneous rectal perforation and transanal evisceration of the small bowel. Approximately 150 cm of small bowel had eviscerated transanally and the patient required emergent abdominal exploration, reposition of the small bowel, and repair of the rectal perforation. Small bowel evisceration through the anal verge is an emergent condition and the aim was to prevent life threatening complications related to sepsis.