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Dr. Ravinderjit Kaur Singh  Md image

Dr. Ravinderjit Kaur Singh Md

9900 Stockdale Hwy Suite 205
Bakersfield CA 93311
661 175-5988
Medical School: Other - Unknown
Accepts Medicare: No
Participates In eRX: No
Participates In PQRS: No
Participates In EHR: No
License #: A93256
NPI: 1740338771
Taxonomy Codes:
207Q00000X

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Publications

Recombinant activated factor VII in the management of acute fatty liver of pregnancy: A case report. - The journal of obstetrics and gynaecology research
A 20-year-old woman, primigravida at 36(+4) weeks' gestation presented with malaise, vomiting for 1 week, yellowish discoloration of the eyes for 3 days and loss of fetal movements. A clinical diagnosis of acute fatty liver with intrauterine fetal demise was made. Labor was induced with prostaglandin E2 gel and delivered vaginally. The post-partum period was complicated by atonic post-partum hemorrhage, an episode of seizure, recurrent hypoglycemic attack, hypokalemia and continuing coagulopathy. Supportive management in the intensive care unit using blood and blood products and injection recombinant activated factor VIIa to arrest the bleeding resulted in a successful outcome.© 2015 The Authors. Journal of Obstetrics and Gynaecology Research © 2015 Japan Society of Obstetrics and Gynecology.
5-Lipoxygenase and Cyclooxygenase Inhibitory Dammarane Triterpenoid 1 from Borassus flabellifer Seed Coat Inhibits Tumor Necrosis Factor-α Secretion in LPSInduced THP-1 Human Monocytes and Induces Apoptosis in MIA PaCa-2 Pancreatic Cancer Cells. - Anti-cancer agents in medicinal chemistry
Phospholipase A2 (PLA2), Cyclooxygenase (COX) and 5-Lipoxygenase (5-LOX) are arachidonic acid metabolizing enzymes and their inhibitors have been developed as therapeutic molecules for cancer and inflammation related disorders. In the present study, PLA2, COX 1&2 and 5-LOX inhibitory studies of Borassus flabellifer seed coat extract were carried out and substantial 5-LOX inhibitory activity was found. Dammarane triterpenoid 1 (Dammara-20,23-diene-3,25-diol) was isolated according to 5-LOX activity guided isolation, and screened for COX (1 & 2) inhibitory activities. Dammarane triterpenoid 1 inhibited carrageenan-induced rat paw edema and TNF-α secretion levels in lipopolysaccharide (LPS)-induced THP-1 human monocytes. Anticancer activity studies demonstrated the antiproliferative effect of dammarane triterpenoid 1 on various cancer cell lines including MIA PaCa-2 pancreatic, DU145 prostate, HL-60 leukemia and Caco-2 colon cancers. Dammarane triterpenoid 1 showed good antiproliferative activity on MIA PaCa-2 pancreatic cancer cell line with IC50 of 12.36±0.33 µM, among other tested cell lines. Apoptosis inducing activity of dammarane triterpenoid 1 was confirmed based on increased sub-G0 phase cell population in cell cycle analysis, loss of mitochondrian membrane potential, elevated levels of cytochrome c, nuclear morphological changes and DNA fragmentation in MIA PaCa-2 pancreatic cancer cells. Therefore, dammarane triterpenoid skeleton may raise the hope of developing novel anti-inflammatory and anticancer drugs in the future.
A comparative study on diagnostic accuracy of colour coded digital images, direct digital images and conventional radiographs for periapical lesions - an in vitro study. - Journal of clinical and diagnostic research : JCDR
The identification and radiographic interpretation of periapical bone lesions is important for accurate diagnosis and treatment. The present study was undertaken to study the feasibility and diagnostic accuracy of colour coded digital radiographs in terms of presence and size of lesion and to compare the diagnostic accuracy of colour coded digital images with direct digital images and conventional radiographs for assessing periapical lesions.Sixty human dry cadaver hemimandibles were obtained and periapical lesions were created in first and second premolar teeth at the junction of cancellous and cortical bone using a micromotor handpiece and carbide burs of sizes 2, 4 and 6. After each successive use of round burs, a conventional, RVG and colour coded image was taken for each specimen. All the images were evaluated by three observers. The diagnostic accuracy for each bur and image mode was calculated statistically.Our results showed good interobserver (kappa > 0.61) agreement for the different radiographic techniques and for the different bur sizes. Conventional Radiography outperformed Digital Radiography in diagnosing periapical lesions made with Size two bur. Both were equally diagnostic for lesions made with larger bur sizes. Colour coding method was least accurate among all the techniques.Conventional radiography traditionally forms the backbone in the diagnosis, treatment planning and follow-up of periapical lesions. Direct digital imaging is an efficient technique, in diagnostic sense. Colour coding of digital radiography was feasible but less accurate however, this imaging technique, like any other, needs to be studied continuously with the emphasis on safety of patients and diagnostic quality of images.
Improved upper limits on the stochastic gravitational-wave background from 2009-2010 LIGO and Virgo data. - Physical review letters
Gravitational waves from a variety of sources are predicted to superpose to create a stochastic background. This background is expected to contain unique information from throughout the history of the Universe that is unavailable through standard electromagnetic observations, making its study of fundamental importance to understanding the evolution of the Universe. We carry out a search for the stochastic background with the latest data from the LIGO and Virgo detectors. Consistent with predictions from most stochastic gravitational-wave background models, the data display no evidence of a stochastic gravitational-wave signal. Assuming a gravitational-wave spectrum of Ω_{GW}(f)=Ω_{α}(f/f_{ref})^{α}, we place 95% confidence level upper limits on the energy density of the background in each of four frequency bands spanning 41.5-1726 Hz. In the frequency band of 41.5-169.25 Hz for a spectral index of α=0, we constrain the energy density of the stochastic background to be Ω_{GW}(f)<5.6×10^{-6}. For the 600-1000 Hz band, Ω_{GW}(f)<0.14(f/900  Hz)^{3}, a factor of 2.5 lower than the best previously reported upper limits. We find Ω_{GW}(f)<1.8×10^{-4} using a spectral index of zero for 170-600 Hz and Ω_{GW}(f)<1.0(f/1300  Hz)^{3} for 1000-1726 Hz, bands in which no previous direct limits have been placed. The limits in these four bands are the lowest direct measurements to date on the stochastic background. We discuss the implications of these results in light of the recent claim by the BICEP2 experiment of the possible evidence for inflationary gravitational waves.
Primary Supratentorial Haemorrhage - Surgery or no Surgery in an Indian Setup. - Journal of clinical and diagnostic research : JCDR
Rise of hypertension among younger age group has increased the prevalence of intracranial haemorrhage. Conflicting reviews regarding the mode of treatment has been a concern to the treating physicians especially in a developing country like India. This study was undertaken to underline the importance of management and propose a local protocol for primary supra-tentorial haemorrhage.Patients presenting with primary supratentorial (ST) haemorrhage fulfilling inclusion criteria are included in the study. Decompression craniotomy done in all the patients and the patient particulars noted. The primary outcome of death is correlated with various particulars and statistical analysis done with SPSS version 16.Mean age of presentation was 54.2 years, ranging from 38-71years. Male comprised 82.1% (23 patients). Seven out of eight patients with Glasgow coma scale (GCS) ≤7 (87.5%) expired whereas only 3 out of 20 (15%) patients with GCS >7 expired. 50% of the patients with intracranial haemorrhage (ICH) in temporo-pari et al., (2/4) or in basal ganglia with cortical extension (5/10) expired whereas the mortality in cases of ICH in parietal lobe and frontal lobes were 25% (1/4) and 20% (2/10) respectively. Clot volume ≤100ml had a mortality of 19% (4/21) whereas the mortality was as high as 85.7% (6/7) with clot volume >100ml.Emergency Craniotomy and Evacuation of the Hematoma could be a feasible option in between 40 ml to 100ml of Primary ST ICH without intra-ventricular extension. In cases of intra-ventricular extension of haematoma surgery is less helpful. Midline shift of 5 mm or more might be a poor prognostic factor.
Enhanced methanol production in plants provides broad spectrum insect resistance. - PloS one
Plants naturally emit methanol as volatile organic compound. Methanol is toxic to insect pests; but the quantity produced by most of the plants is not enough to protect them against invading insect pests. In the present study, we demonstrated that the over-expression of pectin methylesterase, derived from Arabidopsis thaliana and Aspergillus niger, in transgenic tobacco plants enhances methanol production and resistance to polyphagous insect pests. Methanol content in the leaves of transgenic plants was measured using proton nuclear spectroscopy (1H NMR) and spectra showed up to 16 fold higher methanol as compared to control wild type (WT) plants. A maximum of 100 and 85% mortality in chewing insects Helicoverpa armigera and Spodoptera litura larvae was observed, respectively when fed on transgenic plants leaves. The surviving larvae showed less feeding, severe growth retardation and could not develop into pupae. In-planta bioassay on transgenic lines showed up to 99 and 75% reduction in the population multiplication of plant sap sucking pests Myzus persicae (aphid) and Bemisia tabaci (whitefly), respectively. Most of the phenotypic characters of transgenic plants were similar to WT plants. Confocal microscopy showed no deformities in cellular integrity, structure and density of stomata and trichomes of transgenic plants compared to WT. Pollen germination and tube formation was also not affected in transgenic plants. Cell wall enzyme transcript levels were comparable with WT. This study demonstrated for the first time that methanol emission can be utilized for imparting broad range insect resistance in plants.
Urinary iodine excretion in pregnancy: a pilot study in the region of Nepal. - Journal of clinical and diagnostic research : JCDR
Pregnancy is accompanied by profound alterations in the thyroid economy and the relative iodine deficiency. The median Urinary Iodine Excretion (UIE) is the most reliable indicator of the population's iodine nutrition. The physiological alterations in normal pregnancy, such as an increased glomerular filtration rate, potentially invalidate UIE as an assessment tool in pregnancy.To assess the Urinary Iodine Excretion (UIE) in pregnant mothers and to enquire about the current status of their iodised salt intake.We carried out a cross-sectional study in which urine samples were collected from 45 pregnant mothers who were admitted to the antenatal ward. The iodine level in the urine was analysed by a method which was provided by Singh and Ali, to determine the Urinary Iodine Excretion (UIE). A questionnaire was introduced to document the status of the dietary intake of iodised salt. The UIE was expressed in median (interquartile) and the other data are expressed in frequency and percentage. Fisher Exact test was applied to compare between UIE and iodine intake.Thirteen (28.88%) pregnant mothers had UIEs of <150 μg/L, which were below the cut-off point of the UIE for pregnant mothers. Overall, 33 mothers were from the Terai region; among them, one third had UIEs of <150 μg/L. Among the 45 pregnant women, 15 (33.34%) were not using iodised salt and the rest were using iodised salt. Among those who were using iodised salt (30 out of 45), 8 pregnant women had UIEs of <150 μg/L and among those who were not using iodised salt, 5 pregnant women had UIEs of < 150 μg/L.The UIE was below 150μg/L in a substantial percentage (28.89%) of pregnant women of the Terai region, regardless of their intake of iodised salt.
Purine biosynthetic pathway genes and methotrexate response in rheumatoid arthritis patients among north Indians. - Pharmacogenetics and genomics
Inter-individual variations to methotrexate (MTX) response among rheumatoid arthritis (RA) patients have been attributed to clinical heterogeneity and genetic variations influencing MTX pharmacology. In this study, we analyzed the association of polymorphisms in ATIC, AMPD1, ADA, and ADORA2A from the purine biosynthetic pathway with MTX response in RA patients from north India. We also assessed the cumulative contribution of these polymorphisms together with those from the receptor-metabolizer-transporter and folate pathway genes that we have previously investigated.RA patients recruited using the American College of Rheumatology criteria were grouped into good (n = 213) and poor (n = 68) responders to MTX, based on Disease Activity Score 28-3. Individual single nucleotide polymorphism association was tested using (chi)2 test, and cumulative contribution of all the single-nucleotide polymorphisms and cumulative contribution of all the SNPs and clinico-demographic factors were assessed using linear and logistic regression.G allele of ADA rs244076 [P = 0.02, odds ratio (95% confidence interval): OR (95% CI) = 1.66 (1.01-2.75)]; and T allele of ADORA2A rs5751876 [P = 0.04, OR (95% CI) = 1.55 (1.01-2.37)] were associated with poor response, but did not stand Bonferroni correction. On regression analyses, FPGS rs1544105, TYMS rs2853539, DHFR rs7387, and ADA rs244076 were identified as putative predictors for MTX response. Carriers of the FPGS rs1544105 AA and AG genotypes [OR (95% CI) = 3.47 (1.19-10.12)] and TYMS rs2853539 AA genotype [OR (95% CI) = 2.76 (1.50-5.07)] were predictors of poor response in our patient population.Genes from all the three pathways seem to contribute to MTX response in the Indian population. However, these observations need to be replicated in an independent sample set.
Comparison of the effectiveness of music and progressive muscle relaxation for anxiety in COPD--A randomized controlled pilot study. - Chronic respiratory disease
Acute effects of music and relaxation have not been evaluated in hospitalized subjects with chronic obstructive pulmonary disease (COPD). This study aims to evaluate the acute effects of music and progressive muscle relaxation (PMR) in hospitalized COPD subjects after a recent episode of exacerbation. A Randomized controlled study was performed of pre-test post-test design after recruiting 82 COPD subjects from K.M.C hospitals. All patients were admitted for acute exacerbation and were medically stabilized. After being screened for the inclusion and exclusion criteria, 72 subjects were selected for the study. Demographic and baseline data was taken on the day subjects were screened. Music group listened to a self selected music of 60-80 beats per minute for 30 minutes. PMR group practiced relaxation through a pre-recorded audio of instructions of 16 muscle groups. Outcome variables were Spielberger's state anxiety inventory (SSAI), Spielberger's trait anxiety inventory (STAI), dyspnea, systolic blood pressure (SBP), diastolic blood pressure (DBP), pulse rate (PR) and respiratory rate (RR). There was statistically significant main effect across the sessions for state anxiety (F = 62.621, p = 0.000), trait anxiety (F = 19.528, p = 0.000), dyspnea (F = 122.227, p = 0.000), SBP (F = 63.885, p = 0.000), PR (F = 115.780, p = 0.000) and RR (F = 202.977, p = 0.000). There was statistically significant interaction effect between the two groups for state anxiety (F = 6.024, p = 0.003), trait anxiety (F = 8.222, p = 0.000), dyspnea (F = 10.659, p = 0.000), SBP (F = 12.889, p = 0.000), PR (F = 4.746, p = 0.008) and RR (F = 12.078, p = 0.000). There were greater changes observed after the second session in both groups however, change in DBP was not significant in either group. Music and PMR are effective in reducing anxiety and dyspnoea along with physiologic measures such as SBP, PR and RR in two sessions in COPD patients hospitalized with exacerbation. However, reductions in the music group were greater compared to the PMR group.
Isolation of a lytic bacteriophage against virulent Aeromonas hydrophila from an organized equine farm. - Journal of basic microbiology
A bacteriophage (VTCCBPA6) against a pathogenic strain of Aeromonas hydrophila was isolated from the sewage of an organized equine breeding farm. On the basis of TEM analysis, phage belonged to family Myoviridae. PCR amplification and sequence analysis of gp23 gene (encoding for major capsid protein) revealed phylogenetic resemblance to T4 like virus genus. Protein profiling by SDS-PAGE also indicated its resemblance to T4 like phage group. However, the comparison of its gp23 gene sequence with previously reported phages showed similarity with T4-like phages infecting Enterobacteriaceae instead of Aeromonas spp. Thus, to our knowledge, this report points toward the fact that a novel/evolved phage might exist in equine environment against A. hydrophila, which can be potentially used as a biocontrol agent.© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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