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1.
K C Gopalakrishnan J Lewis 《The Journal of bone and joint surgery. British volume》1990,72(4):554-556
We report seven children in whom traumatic haemarthrosis of the hip had produced lateral subluxation of the femoral head, which is different from the apparent displacement seen in Perthes' disease. In all seven cases, aspiration of the haemarthrosis allowed reduction of the femoral head, and follow-up for a mean of 14 months revealed no evidence of avascular necrosis of the proximal femoral epiphysis. Traumatic haemarthrosis of the hip in children appears to be a clinical entity which can produce femoral head subluxation. Aspiration and traction is the treatment of choice and can cure the condition. 相似文献
2.
Calcium antagonizes the magnesium-induced high affinity state of the hepatic vasopressin receptor for the agonist interaction. 下载免费PDF全文
H. Wang V. Gopalakrishnan J. R. McNeill P. V. Sulakhe C. R. Triggle 《British journal of pharmacology》1990,100(1):5-10
1. The present study describes the role of Ca2+ in the regulation of the hepatic vasopressin V1 receptor. With low concentrations of Ca2+, there was a small increase in [3H]-arginine vasopressin [( 3H]-AVP) binding, but above 10 mM, Ca2+ decreased the binding of this agonist. In contrast, low concentrations of Mg2+ were associated with a dramatic concentration-dependent increase in [3H]-AVP binding, reaching a maximal effect of 650% above control at concentrations ranging between 1-5 mM. At higher concentrations of Mg2+, the stimulatory effect of this cation was less pronounced, falling to 210% of control at 100 mM Mg2+. Strikingly, Ca2(+)-inhibited the stimulatory effect of Mg2+ in a concentration-dependent fashion. 2. Saturation binding data revealed that Ca2+ (2 to 10 mM) per se promotes the high affinity conformation of the V1 receptor for the agonist binding with the KD decreased from a control value of 2.3 nM to 0.5 nM in the presence of 10 mM Ca2+. This effect was attenuated with an increase in Ca2+ above 10 mM. With an increase in Ca2+ to 20 mM, however, the Bmax for [3H]-AVP binding was decreased. Ca2+ also decreased the high affinity/high capacity state (KD 100 pM) of the receptor induced by 1 mM Mg2+ for agonist interaction. 3. [3H]-V1 antagonist binding was inhibited by both Ca2+ and Mg2+. The IC50 values (mean +/- s.e. mean) for Ca2+ and Mg2+ were 32 +/- 8 and 53 +/- 9 mM respectively. Maximal inhibition achieved at 100 mM was 29% for Ca2+ and 42% for Mg2+.(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
3.
Sunil Kumar Saxena S. Gopalakrishnan 《Indian journal of otolaryngology and head and neck surgery》2003,55(4):281-282
Despite the common occurrence of pleomorphic adenoma of major salivary glands, intranasal pleomorphic adenoma are rare. We
present a ease of pleomorphic adenoma of the nasal septum along with a brief review of literature. The histological nature
of this lesion in comparison to other salivary gland tumours and the importance of an accurate diagnosis has been stressed. 相似文献
4.
Conversion of myoblasts to physiologically active neuronal phenotype 总被引:13,自引:0,他引:13
Watanabe Y Kameoka S Gopalakrishnan V Aldape KD Pan ZZ Lang FF Majumder S 《Genes & development》2004,18(8):889-900
5.
Murugu Sundara Pandiyan Periasamy Sivakumar Poongavanam Andappan Gopalakrishnan Vedamoorthy 《Indian Journal of Thoracic and Cardiovascular Surgery》2013,29(1):29-31
Tracheoesophageal fistula after blunt trauma is very rare. Typically the patient is a young male driving a car and is thrust onto the steering wheel following sudden deceleration as in a high speed road traffic accident. In our case that victim is a motorcyclist who fell down on his right side and developed such a fistula after 3 days. We report the clinical summary and a brief review of literature. 相似文献
6.
Srinivas BK Gopalakrishnan M Mahadevan R Satyaprasad V 《Asian cardiovascular & thoracic annals》2002,10(1):64-65
A 36-year-old female was admitted with dyspnea on exertion of one year's duration. Echocardiography revealed a tumor arising from interventricular septum with dynamic left ventricular outflow tract obstruction. On cardiopulmonary bypass with cardioplegic arrest, the tumor was approached through a transverse aortotomy, and excised from the interventricular septum through the aortic valve. Postoperative recovery was uneventful and the patient was asymptomatic with no recurrence at follow-up after one year. 相似文献
7.
Covalent cross-linking of 2D structures such as graphene, MoS2 and C3N4 using coupling reactions affords the generation of novel materials with new or improved properties. These covalently cross-linked structures provide the counter point to the van der Waals heterostructures, with an entirely different set of features and potential applications. In this article, we describe the materials obtained by bonding borocarbonitride (BCN) layers with BCN layers as well as with other layered structures such as MoS2 and C3N4. While cross-linking BCN layers with other 2D sheets, we have exploited the existence of different surface functional groups on the graphene (COOH) and BN(NH2) domains of the borocarbonitrides as quantitatively determined by FLOSS. Hence, we have thus obtained two different BCN–BCN assemblies differing in the location of the cross-linking and these are designated as GG/BCN–BCN and GBN/BCN–BCN, depending on which domains of the BCN are involved in cross-linking. In this study, we have determined the surface areas and CO2 and H2 adsorption properties of the cross-linked structures of two borocarbonitride compositions, (BN)0.75C0.25 and (BN)0.3C0.7. We have also studied their supercapacitor characteristics and photochemical catalytic activity for hydrogen generation. The study reveals that the covalently cross-linked BCN–BCN and BCN–MoS2 assemblies exhibit increased surface areas and superior supercapacitor performance. The BCN composite with MoS2 also shows high photochemical HER activity besides electrochemical HER activity comparable to Pt. This observation is significant since MoS2 in the nanocomposite is in the 2H form. The present study demonstrates the novelty of this new class of materials generated by cross-linking of 2D sheets of inorganic graphene analogues and their potential applications.Covalent cross-linking of 2D structures such as graphene, MoS2 and C3N4 using coupling reactions affords the generation of novel materials with new or improved properties. 相似文献
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