1.Cyanobacteria, Lyngbya aestuarii and Aphanothece bullosa as antifungal and antileishmanial drug resources
Kumar Maheep ; Tripathi Kumar Manoj ; Srivastava Akanksha ; Gour Kumar Jalaj ; Singh Kumar Rakesh ; Tilak Ragini ; Asthana Kumar Ravi
Asian Pacific Journal of Tropical Biomedicine 2013;(6):458-463
To investigate two cyanobacteria isolated from different origins i.e. Lyngbya aestuarii(L. aestuarii) from brackish water and Aphanothece bullosa (A. bullosa) from fresh water paddy fields for antifungal and antileishmanila activity taking Candida albicans and Leishmaniadonovain as targets. Methods: Biomass of L. aestuarii and A. bullosa were harvested after 40 and 60 d respectively and lyophilized twice in methanol (100%) and redissolved in methanol (5%) for bioassay. Antifungal bioassay was done by agar well diffusion method while antileishmanial, by counting cell numbers and flageller motility observation of promastigotes and amastigotes fromL. donovani . Fluconazole and 5% methanol were used as control. Results: Both the cyanobacteria were found to be potent source of antifungal activity keeping fluconazole as positive control, however, methanolic crude extract (15 mg/mL) of A. bullosa was found more potent (larger inhibition zone) over that of methanolic crude extract of L. aestuarii. Similarly antileishmanial activity of crude extract (24.0 mg/mL) of A. bullosa was superior over that of methanolic crude extract of L. aestuarii (25.6 mg/mL). Conclusions: Antifungal and antileishmanial drugs are still limited in the market. Screening of microbes possessing antifungal and antileishmanial activity drug is of prime importance. Cyanobacteria are little explored in this context because most of the drugs in human therapy are derived from microorganisms, mainly bacterial, fungal and actinomycetes. Thus in the present study two cyanobacterial strains from different origins showed potent source of antifungal and antileishmanial biomolecules.
2.C2 Superior Facetal Osteotomy: A Novel Technique in Complex Craniovertebral Junction Surgery for C1 Lateral Mass Screw Placement
Deepak Kumar SINGH ; Diwakar SHANKAR ; Vipin Kumar CHAND ; Rakesh Kumar SINGH ; Neha SINGH
Asian Spine Journal 2023;17(6):1125-1131
Complex craniovertebral junction (CVJ) defects account for a considerable proportion of CVJ diseases. Given the heavily assimilated C1, an unfavorable C1–C2 joint orientation, an overriding C2 superior facet, a low-hanging occiput, and an abnormal vertebral artery course with a high-riding vertebral artery, placement of C1 lateral mass screws might be difficult. To address this, a novel technique for placing C1 lateral mass screws that avoid vertebral artery injury, low-hanging occiput, and overriding C2 superior facet was developed in this study. This approach enables firm fixation of C1–C2 even in difficult situations where the placement of the C1 lateral mass is challenging.
3.Parkinsonism due to isolated substantia nigra involvement in probable Japanese encephalitis
Rakesh Shukla ; Veeresh Bajpai ; Himanshu Mehta ; Sanjay Gambhir ; Sanjay Prakash ; Ajai Kumar Singh
Neurology Asia 2008;13(1):113-115
Parkinsonism due to an isolated lesion of the substantia nigra following a febrile illness is a rare entity.
Anecdotal reports in the literature implicate substantia nigra as peculiarly susceptible to flaviviruses.
Here we report a case of isolated substantia nigra involvement in a probable Japanese encephalitis
patient who presented with post-encephalitic parkinsonism
4.Bone mineral density and urinary hydoxyproline are already abnormal in newly diagnosed patients with epilepsy in this North Indian study
Kiran Dahiya ; Aastha Bansal ; Surekha Dabla ; Rakesh Dhankhar ; Veena Singh ; Himanshu Devender Kumar ; Deepika Dalal
Neurology Asia 2015;20(3):229-233
Background & Objective:Epilepsy may have an impact on bone health of the patients even before
drug therapy is initiated, particularly in the developing countries. This is in view of long delay in
diagnosis and lifestyle changes. Therefore, in this study, bone health markers like bone mineral density
(BMD) and urinary hydroxyproline were assessed in newly diagnosed epilepsy patients. Methods: The
BMD was assessed by DEXA scan, and 24 hour urine hydroxyproline was estimated colorimetrically
in 25 newly diagnosed epilepsy patients. Other bone markers like calcium, phosphorus, vitamin D
and alkaline phosphatase were also estimated. Results were compared with 25 age and sex matched
healthy controls, and were analyzed statistically. Results: The BMD and vitamin D were found to be
significantly decreased (p<0.05) while serum alkaline phosphatase and urine calcium and phosphorus
were observed to be significantly increased p<0.05) in epilepsy patients as compared to healthy controls.
The difference in urinary hydroxyproline and serum calcium/ phosphorus in the two groups was not
found to be statistically significant (p>0.05).
Conclusions: Bone health is found to be already compromised in epilepsy patients in this study from
North India. BMD and urinary hydroxyproline may act as simple, non-invasive, convenient and
inexpensive markers to assess bone health in these patients
Bone Density
;
Epilepsy
5.A bony foreign body found in a patient with no bony injury: a case report.
Devwart KAUSHIK ; Narendra JOSHI ; Rakesh KUMAR ; Shiv Kumar GOYAL ; Kamlesh KUMAR ; Sahil GABA
Chinese Journal of Traumatology 2014;17(6):367-369
Open fractures with bone loss are a common occurrence following high energy trauma. But usually the bone fragments are lost on the roadside and are not usable. We report a patient who was involved in a head-on collision between two wheelers and presented with a bone fragment embedded in his thigh. Radiological survey revealed no bony injury in that patient. Another patient, who presented at the same time, sustained a segmental fracture of shaft femur and was found to have lost a bone fragment that was similar to the one found in previous patient. CT scan with 3D reconstruction revealed this missing fragment to be the same as that found in previous patient. Both patients had a history of head-on collision while travelling on a two-wheeler. Present case report throws some highlights on the probable mechanism of injury.
Accidents, Traffic
;
Bone and Bones
;
injuries
;
Foreign Bodies
;
Thigh
;
injuries
6.Comparative evaluation of intranasal midazolam-ketamine, dexmedetomidine-ketamine, midazolam-fentanyl, and dexmedetomidine-fentanyl combinations for procedural sedation and analgesia in pediatric dental patients: a randomized controlled trial
Abhilasha AGARWAL ; Afroz Alam ANSARI ; Rajendra NATH ; Rakesh Kumar CHAK ; Rajeev Kumar SINGH ; Richa KHANNA ; Prem Raj SINGH
Journal of Dental Anesthesia and Pain Medicine 2023;23(2):69-81
Background:
In order to assess the effectiveness of various analgesio-sedative combinations for pain relief and sedation in pediatric dental patients, a thorough evaluation of clinical studies and patient outcomes is necessary.
Methods:
A total of 128 healthy, uncooperative pediatric dental patients were randomly allocated to receive one of the four combinations of drugs via the intranasal (IN) route: Group I received midazolam-ketamine (MK), Group II received dexmedetomidine-ketamine (DK), Group III received midazolam-fentanyl (MF), and Group IV received dexmedetomidine-fentanyl (DF) in a parallel-arm study design. The efficacy and safety of the combinations were evaluated using different parameters.
Results:
The onset of sedation was significantly faster in the DF group than in the DK, MF, and MK groups (P < 0.001). The depth of sedation was significantly higher in the DK and DF groups than in the MK and MF groups (P < 0.01). DK and DF produced significant intra- and postoperative analgesia when compared with combinations of MK and MF. No significant adverse events were observed for any of the combinations.
Conclusions
The DK and DF groups showed potential as analgesio-sedatives in view of their anxiolytic and analgesic effects.
7.Glomus Tumor of Hoffa's Fat Pad and Its Management by Arthroscopic Excision.
Sharad PRABHAKAR ; Mandeep Singh DHILLON ; Rakesh Kumar VASISHTHA ; Kamal BALI
Clinics in Orthopedic Surgery 2013;5(4):334-337
We present a rare case of glomus tumor of Hoffa's fat pad in a 42-year-old woman. Magnetic resonance imaging findings along with the characteristic clinical picture led us to suspect a glomus tumor as the possible etiology. An ischemia test was found to be positive and this further substantiated our diagnosis. An arthroscopic excision was performed and the histology confirmed the diagnosis of glomus tumor of Hoffa's fat pad. The patient responded well to the excision with immediate complete resolution of pain and she remains asymptomatic at the last follow-up after 15 months. To our knowledge, this is the second reported case of glomus tumor of Hoffa's fat pad and the first ever to be managed by simple arthroscopic excision. The tumor poses a great challenge to an orthopedic surgeon. However, knowledge of its characteristic clinical presentation and the recognition of such a rare entity can help achieve an early diagnosis and timely management.
Adipose Tissue/pathology/*surgery
;
Adult
;
Arthroscopy
;
Female
;
Glomus Tumor/*secondary
;
Humans
;
Knee/pathology/*surgery
;
Magnetic Resonance Imaging
;
Soft Tissue Neoplasms/*surgery
8.Von Hippel-Lindau Syndrome: Demonstration of Entire Disease Spectrum with 68Ga-DOTANOC PET-CT.
Punit SHARMA ; Varun Singh DHULL ; Chandrasekhar BAL ; Arun MALHOTRA ; Rakesh KUMAR
Korean Journal of Radiology 2014;15(1):169-172
Von Hippel-Lindau (VHL) syndrome is a rare neoplastic disorder characterized by central nervous system (CNS) and visceral tumors. We here present 68Ga-labelled [1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetraacetic acid]-1-Nal3-Octreotide positron emission tomography computed tomography findings in a 52 year old female with VHL syndrome, demonstrating both CNS and visceral tumors.
Brain Diseases/radionuclide imaging
;
Female
;
Humans
;
Kidney Diseases/radionuclide imaging
;
Liver Diseases/radionuclide imaging
;
Middle Aged
;
Multimodal Imaging/*methods
;
Organometallic Compounds/diagnostic use
;
Pancreatic Diseases/radionuclide imaging
;
Positron-Emission Tomography/*methods
;
Tomography, X-Ray Computed/*methods
;
von Hippel-Lindau Disease/*radionuclide imaging
9.Induction of Defense Related Enzymes and Pathogenesis Related Proteins in Pseudomonas fluorescens-Treated Chickpea in Response to Infection by Fusarium oxysporum f. sp. ciceri.
Ratul SAIKIA ; Rakesh KUMAR ; Tanuja SINGH ; Alok K SRIVASTAVA ; Dilip K ARORA ; Min Woong LEE
Mycobiology 2004;32(1):47-53
Pseudomonas fluorescens 1-94 induced systemic resistance in chickpea against Fusarium wilt of chickpea caused by Fusarium oxysporum f. sp. ciceri by the synthesis and accumulation of phenolic compounds, phenylalanine ammonia lyase(PAL) and pathogenesis related(PR) proteins(chitinase, beta-1,3-glucanase and peroxidase). Time-course accumulation of these enzymes in chickpea plants inoculated with P. fluorescens was significantly(LSD, P=0.05) higher than control. Maximum activities of PR-proteins were recorded at 3 days after inoculation in all induced plants; thereafter, the activity decreased progressively. Five PR peroxidases detected in induced chickpea plants. Molecular mass of these purified peroxidases was 20, 29, 43, 66 and 97 kDa. Purified peroxidases showed antifungal activity against plant pathogenic fungi.
Ammonia
;
Cicer*
;
Fungi
;
Fusarium*
;
Peroxidases
;
Phenol
;
Phenylalanine
;
Plants
;
Pseudomonas fluorescens
;
Pseudomonas*
10.Herniation of malignant lung cavity.
Saurabh Kumar SINGH ; Rakesh BHARGAVA ; Zuber AHMAD ; Deepak K PANDEY ; Shirin NAAZ ; Vibhanshu GUPTA
Chinese Medical Journal 2008;121(17):1757-1758
Adenocarcinoma
;
complications
;
Female
;
Hernia
;
etiology
;
Humans
;
Lung Diseases
;
etiology
;
Lung Neoplasms
;
complications
;
Middle Aged