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81.
A. Rakhit P. G. Khandelwal S. K. Mukherjee A. K. Dey 《Indian journal of pediatrics》1986,53(2):243-248
One hundred and twenty children with possible diagnosis of pulmonary tuberculosis were admitted in this study for evaluating
the efficacy of short course chemotherapy regimens in childhood pulmonary tuberculosis and are under follow up. In only three
patients smear was positive for AFB. In 74 cases culture for AFB was done of which 18 cases (24·3%) were found to be positive.
Fortyone patients were put on a standard one year regimen consisting of streptomycin, isoniazide and ethambutol as a control
group and seventy nine patients were put on short-course regimens, consisting of isoniazid, rifampicin and pyrizinamide. Out
of these 79 patients, 39 were in a biweekly regimen consisting of isoniazid and rifampicin after initial intensive therapy
with three drugs for two months. In majority of patients clinical improvement and in all patients bacteriological improvement
was observed at the end of two months period. Marked radiological improvement at the end of therapy was seen in only about
two-third patients. Relapse after stopping therapy occurred in one patient with associated tubercular cervical lymphadenitis. 相似文献
82.
Roopali Khanna MD DM Pujan Shah MD Mousam Dey MD Pravin K. Goel MD DM Puneet Goyal MD DM Shantanu Pandey MD McH 《Echocardiography (Mount Kisco, N.Y.)》2017,34(7):1107-1109
Sinus of Valsalva aneurysm is a rare congenital cardiac abnormality and is usually diagnosed when it ruptures. An asymptomatic 55‐year‐old male of unruptured sinus of Valsalva aneurysm of noncoronary cusp was on medical follow‐up. At 2‐year follow‐up, there was thrombus formation in the aneurysm, mimicking right atrium tumor on 2D transthoracic echocardiography. Cardiac computed tomography showed filling defect in the aneurysm suggestive of thrombus. Considering the high risk of systemic emboli surgery was performed, and aneurysm was repaired with Dacron patch. 相似文献
83.
Kushal Sengupta Sudipta Chatterjee Subhra Samanta Abhishek Dey 《Proceedings of the National Academy of Sciences of the United States of America》2013,110(21):8431-8436
Heme/porphyrin-based electrocatalysts (both synthetic and natural) have been known to catalyze electrochemical O2, H+, and CO2 reduction for more than five decades. So far, no direct spectroscopic investigations of intermediates formed on the electrodes during these processes have been reported; and this has limited detailed understanding of the mechanism of these catalysts, which is key to their development. Rotating disk electrochemistry coupled to resonance Raman spectroscopy is reported for iron porphyrin electrocatalysts that reduce O2 in buffered aqueous solutions. Unlike conventional single-turnover intermediate trapping experiments, these experiments probe the system while it is under steady state. A combination of oxidation and spin-state marker bands and metal ligand vibrations (identified using isotopically enriched substrates) allow in situ identification of O2-derived intermediates formed on the electrode surface. This approach, combining dynamic electrochemistry with resonance Raman spectroscopy, may be routinely used to investigate a plethora of metalloporphyrin complexes and heme enzymes used as electrocatalysts for small-molecule activation. 相似文献
84.
Amal Chandra Das Sakti Dey 《Bulletin of environmental contamination and toxicology》2013,90(6):666-672
An experiment was conducted under laboratory conditions to investigate the effect of three herbicides, viz., fenoxaprop, pendimethalin and paraquat, at their recommended field application rates (50 g, 1.0 kg and 1.0 kg a.i. ha?1, respectively), on the changes of microbial biomass C, N and P in relation to transformations and availability of plant nutrients in an alluvial soil (Typic Orchraqualf) from West Bengal, India. Application of herbicides, in general, significantly increased the microbial biomass C, N and P, resulting in greater availability of these plant nutrients in soil. The microbial biomass C was highly increased due to application of fenoxaprop (39.8 %) followed by paraquat (28.2 %). Application of pendimethalin led to the maximum stimulation of microbial biomass N (37.1 %), while microbial biomass P was increased by 15.2 % following the incorporation of paraquat into the soil. Compared to untreated control soil, the soil retained the highest amount of organic C (19.8 %) when it was treated with pendimethalin. A similar trend was recorded with fenoxaprop for total N (19.6 %) and exchangeable NH4 + (21.3 %) in soil. The stimulation of soluble NO3 ? was highest under fenoxaprop (22.3 %) followed by paraquat (20.7 %). Regarding the availability of P in soil, paraquat manifested greater stimulation (17.8 %) than fenoxaprop (15.4 %) or pendimethalin (13.1 %). Application of paraquat also gave the highest amount of total P (17.8 %) in the soil solution. 相似文献
85.
86.
Cadherins and NCAM as potential targets in metal toxicity 总被引:9,自引:0,他引:9
Prozialeck WC Grunwald GB Dey PM Reuhl KR Parrish AR 《Toxicology and applied pharmacology》2002,182(3):255-265
87.
88.
89.
Nahar Saikia U Khirdwadkar N Saikia B Sood B Goldsmith R Dey P Gupta SK 《Acta radiologica (Stockholm, Sweden : 1987)》2002,43(2):230-234
PURPOSE: To evaluate the role of image-guided fine-needle aspiration cytology (FNAC) of deep-seated lymph nodes. MATERIAL AND METHODS: Image-guided FNACs were performed on 242 patients of deep-seated lymph nodes which included thoracic, retroperitoneal and abdominal nodes. A sterile 3.5/5-MHz micro convex sector probe was used for localisation of the node. The FNAC was performed using a 0.7- to 0.9-mm needle with the stylet removed and attached to a 20-ml syringe and FNAC handle after the needle was visualised in the lesion. For each case a minimum of 4-5 smears were made, and two observers without bias interpreted the smears. RESULTS: A total of 242 patients were aspirated, of which 216 (90%) aspirations were US-guided and the remaining 26 (10%) were CT-guided. Adequate material for cytologic diagnosis was obtained in 208 (86%) patients with a similar diagnostic accuracy. The aspirate material was non-representative or scanty in 34 (14%) patients. The most common cytological diagnosis was tuberculosis/consistent with tuberculosis seen in 108 (45%) patients followed by metastasis (17%) and reactive hyperplasia (10%). Non-Hodgkin lymphoma was diagnosed in 22 (9%) patients. All patients were briefly followed for a period of 1 1/2 to 2 years (mean 1 year). CONCLUSION: Image-guided FNAC has a pivotal role, and is a cost-effective tool for establishing tissue diagnosis as a primary investigative modality. It is also helpful and accurate in follow-up of patients with a known malignant disease, thereby avoiding surgical intervention. 相似文献
90.
Leach RE Khalifa R Armant DR Brudney A Das SK Dey SK Fazleabas AT 《The Journal of clinical endocrinology and metabolism》2001,86(9):4520-4528
The objectives of this study were to determine whether antiprogestin therapy or the infusion of human CG to mimic blastocyst transit in the baboon alters heparin-binding EGF-like growth factor expression during the window of implantation. During the menstrual cycle, heparin-binding EGF-like growth factor protein accumulation in the glandular epithelium was low in the proliferative phase and increased to maximal expression on d 5 and 10 postovulation. Stromal cells accumulated high levels of heparin-binding EGF-like growth factor in the proliferative phase, which decreased by d 5 postovulation. These transitional changes in both cell types were delayed when cycling baboons were treated with the antiprogestin ZK 137.316 during the luteal phase. The treatment with human CG had no effect on expression of heparin-binding EGF-like growth factor when compared with cycling baboons on d 10 postovulation and was comparable with that observed on d 18 and 22 of pregnancy. However, the superimposition of the antiprogestin with the human CG treatment also decreased expression in the epithelial cells. In summary, heparin-binding EGF-like growth factor accumulation in the epithelial glands is under the influence of progesterone and does not seem to be influenced by the paracrine secretion of trophoblast CG. 相似文献