Prof. Ashok Rattan M. D., Mams, insa dfg fellow, who adviser

Recent publications:
1. Khanna A, Raj VS, Tarai B, Sood R, Pareek PK, Upadhyay DJ, Sharma P, Rattan A, Saini KS, Singh H. Emergence and Molecular Characterization of Extensively Drug-Resistant Mycobacterium tuberculosis Clinical Isolates from the Delhi Region in India. Antimicrob Agents Chemother. 2010 Nov;54(11):4789-93. Epub 2010 Aug 16
2. Kalia V, Miglani R, Purnapatre KP, Mathur T, Singhal S, Khan S, Voleti SR, Upadhyay DJ, Saini KS, Rattan A, Raj VS. Mode of action of Ranbezolid against staphylococci and structural modeling studies of its interaction with ribosomes. Antimicrob Agents Chemother. 2009 Apr;53(4):1427-33. Epub 2008 Dec 15
3. Rattan A, Lippi G. Frequency and type of preanalytical errors in a laboratory medicine department in India. Clin Chem Lab Med. 2008;46(11):1657-9
4. [Characterization of invasive isolates of S. pneumoniae, H. influenzae, and N. meningitidis in Latin America and the Caribbean: SIREVA II, 2000-2005] Gabastou JM, Agudelo CI, Brandileone MC, Castañeda E, de Lemos AP, Di Fabio JL; Grupo de Laboratorio de SIREVA II.

Rev Panam Salud Publica. 2008 Jul;24(1):1-15

5. Ciprofloxacin-resistant Neisseria meningitidis, Delhi, India. Singhal S, Purnapatre KP, Kalia V, Dube S, Nair D, Deb M, Aggarwal P, Gupta S, Upadhyay DJ, Rattan A, Raj VS.

Emerg Infect Dis. 2007 Oct;13(10):1614-6

6. Antifungal potential of disulfiram. Khan S, Singhal S, Mathur T, Upadhyay DJ, Rattan A.

Nippon Ishinkin Gakkai Zasshi. 2007;48(3):109-13

Theme: A.1. Synthetic antibacterial
A. 1. 1. Rao M, Sood R, Malhotra S, Fatma T, Upadhaya DJ, Rattan A. In vitro bactericidal activity of oxazolidinone, RBx 8700 against Mycobacterium tuberculosis and Mycobacterium avium complex.
J Chemother. 2006 Apr;18(2):144-50

A.1. 2: Mathur T, Singhal S, Khan S, Upadhyay DJ, Fatma T, Rattan A.

Detection of biofilm formation among the clinical isolates of Staphylococci: an evaluation of three different screening methods.

Indian J Med Microbiol. 2006 Jan;24(1):25-9.


A.1. 3: Bhateja P, Purnapatre K, Dube S, Fatma T, Rattan A.

Characterisation of laboratory-generated vancomycin intermediate resistant Staphylococcus aureus strains.

Int J Antimicrob Agents. 2006 Mar;27(3):201-11. Epub 2006 Jan 18.
A.1. 4: Mathur T, Singhal S, Khan S, Upadhyay D, Fatma T, Rattan A.

Adverse effect of staphylococci slime on in vitro activity of glycopeptides.

Jpn J Infect Dis. 2005 Dec;58(6):353-7.


A.1. 5: Das B, Rudra S, Yadav A, Ray A, Rao AV, Srinivas AS, Soni A, Saini S, Shukla S, Pandya M, Bhateja P, Malhotra S, Mathur T, Arora SK, Rattan A, Mehta A. Synthesis and SAR of novel oxazolidinones: discovery of ranbezolid.

Bioorg Med Chem Lett. 2005 Oct 1;15(19):4261-7.

A.1. 6: Singhal S, Mathur T, Khan S, Upadhyay DJ, Chugh S, Gaind R, Rattan A. Evaluation of methods for AmpC beta-lactamase in gram negative clinical isolates from tertiary care hospitals.

Indian J Med Microbiol. 2005 Apr;23(2):120-4.

A.1. 7: Bhateja P, Mathur T, Pandya M, Fatma T, Rattan A.

Detection of vancomycin resistant Staphylococcus aureus: a comparative study of three different phenotypic screening methods.

Indian J Med Microbiol. 2005 Jan;23(1):52-5.


A.1. 8: Sood R, Rao M, Singhal S, Rattan A.

Activity of RBx 7644 and RBx 8700, new investigational oxazolidinones, against Mycobacterium tuberculosis infected murine macrophages.

Int J Antimicrob Agents. 2005 Jun;25(6):464-8.


A.1. 9: Mathur T, Bhateja P, Pandya M, Fatma T, Rattan A.

In vitro activity of RBx 7644 (ranbezolid) on biofilm producing bacteria.

Int J Antimicrob Agents. 2004 Oct;24(4):369-73.
A.1.10: Hoellman DB, Lin G, Ednie LM, Rattan A, Jacobs MR, Appelbaum PC.

Antipneumococcal and antistaphylococcal activities of ranbezolid (RBX 7644), a new oxazolidinone, compared to those of other agents.

Antimicrob Agents Chemother. 2003 Mar;47(3):1148-50.


A.1. 11: Ednie LM, Rattan A, Jacobs MR, Appelbaum PC.

Antianaerobe activity of RBX 7644 (ranbezolid), a new oxazolidinone, compared with those of eight other agents.

Antimicrob Agents Chemother. 2003 Mar;47(3):1143-7.
A.1. 12. Rattan A. RBx 7644, oxazolidinone antibacterial. Drugs of the future 2003; 28 (11): 1070 – 1077.
A.2. Synthetic anti fungal:
A.2. 1: Datta K, Jain N, Sethi S, Rattan A, Casadevall A, Banerjee U.

Fluconazole and itraconazole susceptibility of clinical isolates of

Cryptococcus neoformans at a tertiary care centre in India: a need for care.

J Antimicrob Chemother. 2003 Oct;52(4):683-6. Epub 2003 Sep 1.

A.2. 2: Kohli A, Smriti, Mukhopadhyay K, Rattan A, Prasad R.

In vitro low-level resistance to azoles in Candida albicans is associated with changes in membrane lipid fluidity and asymmetry.

Antimicrob Agents Chemother. 2002 Apr;46(4):1046-52.
A. 2. 3 : Khan S, Singhal S, Mathur T, Upadhyay DJ, Rattan A. Antifungal susceptibility testing method for resource constrained laboratories. Indian J Med Microbiol 2006 ; 24 : 171 – 6.

A.3. Natural anti microbial product investigation :
A.3. 1: Bhateja P, Mathur T, Pandya M, Fatma T, Rattan A.

Activity of blue green microalgae extracts against in vitro generated

Staphylococcus aureus with reduced susceptibility to vancomycin.

Fitoterapia. 2006 Feb 23; [Epub ahead of print]

Int J Antimicrob Agents. 2006 Mar;27(3):201-11. Epub 2006 Jan 18.


B. Diagnostic Microbiology in a tertiary care teaching hospital (AIIMS)

B. 1: Talwar GP, Raghuvanshi P, Mishra R, Banerjee U, Rattan A, Whaley KJ, Zeitlin L, Achilles SL, Barre-Sinoussi F, David A, Doncel GF.

Polyherbal formulations with wide spectrum antimicrobial activity against reproductive tract infections and sexually transmitted pathogens.

Am J Reprod Immunol. 2000 Mar;43(3):144-51.


B. 2: Rattan A.

Mechanisms of resistance to fluoroquinolones.

Natl Med J India. 1999 Jul-Aug;12(4):162-4. Review.


B. 3: Kalia A, Rattan A, Chopra P.

A method for extraction of high-quality and high-quantity genomic DNA generally applicable to pathogenic bacteria.

Anal Biochem. 1999 Nov 1;275(1):1-5.


B.4: Rattan A, Kumari S, Khanna N, Pandhi RK, Ray K, Bala M, Misra RS.

Emergence of fluoroquinolone resistant Neisseria gonorrhoeae in New Delhi, India. Sex Transm Infect. 1998 Jun;74(3):229.

B. 5: Siddiqi N, Shamim M, Jain NK, Rattan A, Amin A, Katoch VM, Sharma SK, Hasnain SE. Molecular genetic analysis of multi-drug resistance in Indian isolates of Mycobacterium tuberculosis.

Mem Inst Oswaldo Cruz. 1998 Sep-Oct;93(5):589-94.

B. 6: Kumar S, Dhar A, Srinivasan S, Jain S, Rattan A, Sharma MP.

Antibodies to Cag A protein are not predictive of serious gastroduodenal disease in Indian patients.

Indian J Gastroenterol. 1998 Oct-Dec;17(4):126-8.


B. 7: D'Souza P, Pandhi RK, Khanna N, Rattan A, Misra RS.

A comparative study of therapeutic response of patients with clinical chancroid to ciprofloxacin, erythromycin, and cotrimoxazole.

Sex Transm Dis. 1998 Jul;25(6):293-5.


B. 8: Rattan A, Kalia A, Ahmad N.

Multidrug-resistant Mycobacterium tuberculosis: molecular perspectives.

Emerg Infect Dis. 1998 Apr-Jun;4(2):195-209.


B. 9: Khan FG, Rattan A, Khan IA, Kalia A.

Study of Pseudomonas aeruginosa causing ventilator associated pneumonia.

Indian J Med Res. 1998 Feb;107:68-74.

B. 10: Aziz M, Das TK, Rattan A.

Role of circulating immune complexes in prognostic evaluation and management of genitourinary cancer patients.

Indian J Cancer. 1997 Sep;34(3):111-20.


B. 11: Kumar A, Rattan A.

Antigonadotrophic effect of Mycobacterium tuberculosis.

Horm Metab Res. 1997 Oct;29(10):501-3.


B. 12: Verma A, Kottat AJ, Kalia A, Kapoor SK, Rattan A.

Susceptibility of Staphylococcus aureus at a rural clinic.

Natl Med J India. 1997 Sep-Oct;10(5):255.
B. 13: Gupta VK, Dhar A, Srinivasan S, Rattan A, Sharma MP.

Eradication of H. pylori in a developing country: comparison of lansoprazole versus omeprazole with norfloxacin, in a dual-therapy study.

Am J Gastroenterol. 1997 Jul;92(7):1140-2.


B. 14: Gupta R, Kalia A, Rattan A, Kumar R, Gupta SK.

Comparative evaluation of two indigenously developed tests for rapid detection of group-A streptococci directly from throat swabs.

Indian J Med Res. 1997 May;105:200-5.


B. 15: Bahl S, Wali JP, Handa R, Rattan A, Aggarwal P, Kindo AJ.

Legionella as a lower respiratory pathogen in north India.

Indian J Chest Dis Allied Sci. 1997 Apr-Jun;39(2):81-6.

B. 16.: Khan FG, Rattan A, Khan IA, Kalia A.

A preliminary study of fingerprinting of Pseudomonas aeruginosa by whole cell protein analysis by SDS-PAGE.

Indian J Med Res. 1996 Dec;104:342-8.


B. 17: Khan IA, Rattan A, Fatima T, Khan FG, Kalia A.

Application of whole cell protein analysis by SDS PAGE to establish the source of Salmonella typhimurium.

J Infect. 1996 Nov;33(3):169-71.


B. 18: Jaber M, Rattan A, Kumar R.

Presence of katG gene in resistant Mycobacterium tuberculosis.

J Clin Pathol. 1996 Nov;49(11):945-7.


B. 19: Chandrashekhar C, Seenu V, Misra MC, Rattan A, Kapur BM, Singh R.

Risk factors for wound infection following elective cholecystectomy.

Trop Gastroenterol. 1996 Oct-Dec;17(4):230-2.

B. 20: Mehta A, Rodrigues C, Kumar R, Rattan A, Sridhar H, Mattoo V, Ginde V.

A pilot programme of MRSA surveillance in India. (MRSA Surveillance Study Group).

J Postgrad Med. 1996 Jan-Mar;42(1):1-3.


B. 21: Jaber M, Rattan A, Verma A, Tyagi J, Kumar R.

A simple method of DNA extraction from Mycobacterium tuberculosis.

Tuber Lung Dis. 1995 Dec;76(6):578-81.


B. 22: Rattan A.

PCR for the detection of Mycobacterium tuberculosis DNA.

Natl Med J India. 1995 Jul-Aug;8(4):179-80.
B. 23: Mohan A, Pande JN, Sharma SK, Rattan A, Guleria R, Khilnani GC.

Bronchoalveolar lavage in pulmonary tuberculosis: a decision analysis approach.

QJM. 1995 Apr;88(4):269-76. Erratum in: QJM 1995 Dec;88(12):939.

B. 24: Verma A, Rattan A, Tyagi JS.

Development of a 23S rRNA-based PCR assay for the detection of mycobacteria.

Indian J Biochem Biophys. 1994 Aug;31(4):288-94.


B. 25: Rattan A, Kishore K, Singh S, Jaber M, Xess I, Kumar R.

Evaluation of a safe sputum processing method for detecting tuberculosis.

J Clin Pathol. 1994 May;47(5):411-3.


B. 26: Suri M, Kabra M, Singh S, Rattan A, Verma IC.

Group B meningococcal meningitis in India.

Scand J Infect Dis. 1994;26(6):771-3.
B. 27: Rattan A, Gupta SK, Singh S, Takker D, Kumar S, Bai P, Kukreja R, Jaber M. Detection of antigens of Mycobacterium tuberculosis in patients of infertility by monoclonal antibody based sandwiched enzyme linked immunosorbent assay (ELISA).

Tuber Lung Dis. 1993 Jun;74(3):200-3.

B. 28: Gupta R, Rattan A, Prakash K, Talwar GP, Gupta SK.

Immunodiagnosis of group-A streptococci by latex agglutination assays with monoclonal or monospecific polyvalent antibodies.

Indian J Med Res. 1993 Jan;97:25-31.


B. 29: Kishore K, Rattan A, Bagga A, Srivastava RN, Nath NM, Shriniwas.

Serum antibodies to verotoxin-producing Escherichia coli (VTEC) strains in patients with haemolytic uraemic syndrome.

J Med Microbiol. 1992 Dec;37(6):364-7.


B. 30: Singh S, Rattan A, Kumar S.

Severe cutaneous Mycobacterium chelonei infection following a yellow jacket sting. Tuber Lung Dis. 1992 Oct;73(5):305-6.

B. 31: Kishore K, Rattan A, Nath NM, Shriniwas, Srivastava RN, Bagga A.

Failure to isolate verotoxin producing Escherichia coli from patients of haemolytic uremic syndrome.

Indian J Pediatr. 1992 May-Jun;59(3):305-7.


B. 32: Dar L, Gupta BL, Rattan A, Bhujwala RA, Shriniwas.

Multidrug resistant Salmonella typhi in Delhi.

Indian J Pediatr. 1992 Mar-Apr;59(2):221-4.


B. 33: Rattan A, Dogra V, Bhujwala RA, Jabber MA.

Multi-drug resistant Salmonella.

Natl Med J India. 1992 Mar-Apr;5(2):95-6.

B. 34: Singh S, Rattan A, Samantaray JC.

Acute spirochetal dysentery in a child with Fallot's tetralogy.

Am J Gastroenterol. 1991 May;86(5):655-6.
B. 35: Rattan A, Shriniwas.

Infections caused by mycobacteria other than tubercle (Mott) bacilli.

Indian Pediatr. 1991 Mar;28(3):227-37.
B. 36: Rattan A.

Diagnosis of tuberculosis by polymerase chain reaction.

Indian J Pediatr. 1990 Sep-Oct;57(5):673-7.
B. 37: Rattan A, Sriniwas.

Possible reason for false positive ELISA results in serodiagnosis of

tuberculosis.

Indian Pediatr. 1990 Aug;27(8):881-2.

B. 38: Rattan A.

Susceptibility of clinical isolates to cephalosporins.

Indian Pediatr. 1989 Sep;26(9):965-6.

B. 39: Gupta BL, Tahlan A, Dogra V, Rattan A, Bhujwala RA, Shriniwas.

Susceptibility of clinical isolates to cephalexin, cefazolin and cefotaxime.

Indian Pediatr. 1989 May;26(5):466-71.


B. 40: Faridi MM, Rattan A, Ahmed SH.

Antibiotic sensitivity pattern of Staphylococcus aureus.

Indian Pediatr. 1988 Jun;25(6):534-7. No abstract available.

Medical Education:
C.1. : Rattan A. Student input for curriculum designing in clinical microbiology. 1997; 15: 147 – 149
C. 2.: Rattan A, Singh B, Paul VK, Sood R, Kapila K, Sharma S.K., Kumar V.L., Adkoli B.V., Verma K and Kumar R. CURRICULUM DEVELOPMENT FCR INTEGRATED TEACHING OF INFECTIOUS DISEASES INCLUDING TUBERCULOSIS Ind. J. Tub., 1994, 41, 67 – 72.
C. 3 Rattan A, Mittal S and Gupta A.K.. Role of Computers in Learning - Application in Formative Assessment. Indian J Pediatr 1994; 61 : 139-144
C. 4.: Rattan A and Kumar R. Assessment by Multiple Choice Questions. Indian J Commun Med 1995; 20: 46 – 48.
C. 5.: PBL curriculum for B P Koirala Medical College, Dharan, Nepal

Extra curricular activities:

• 
  Have been involved with writing for Indira Gandhi Open University : Creative English Writing Course
  
• 
  Have helped write the curriculum for B.P.Koirala Institute of Medical Sciences, Dharan, Napal.
  
• 
  Have made a Video picture on Universal Precautions.
  
• 
  Skippered the University team in Cricket and Lawn Tennis
  
• 
  Recognized auditor of laboratories for accreditation to ISO 15189 standards
  

Meetings/ Workshops attended / conducted during employment with World Health Organization (2005 – 07):

1. 
   Workshop of smear microscopy, Georgetown, Guyana Jan 22- 26, 2007
   
2. 
   Workshop on Laboratory support for care and treatment of HIV/AIDS. CAREC, Jan 30 – Feb 3, 2006
   
3. 
   PAHO Assessment laboratory to support DOTS, Guyana, Feb 3 , 2006
   
4. 
   International Conference of Emerging Infectious Disease 2006 , Atlanta, March 18 – 25, 2006
   
5. 
   Belize Laboratory assessment , April 23 – 28, 2006
   
6. 
   Workshop HIV DR. Martinique
   
7. 
   Workshop on Laboratory Methods for diagnosis of tuberculosis. CAREC May 15 – 19, 2006
   
8. 
   “Strengthening of Medical Laboratory Services in the Caribbean” Module 8 (Management Training Workshop) MedLab Project: The way forward. Bahamas
   
9. 
   Meeting of Caribbean National Epidemiologists and Laboratory Directors, CAREC, June 26 – 30, 2006.
   
10. 
    Point of care standards. CAREC 2006
    
11. 
    Third Meeting of the Supranational Laboratory Network of Tuberculosis Rio De Janeiro, Brazil, Sept 9 – 15, 2006
    
12. 
    Meeting of Medical Microbiologists. Porto Rico
    
13. 
    Regional Consultation meeting on Antiretroviral Therapy, PMTCT and Testing and Counseling of HIV: Implications and next steps for Latin America and the Caribbean Dominican Republic
    
14. 
    SPSTI strategic meeting with donors. Tortolla, Virgin Islands
    
15. 
    Meeting of Caribbean Association of Medical Microbiologists. Barbados
    
16. 
    PAHO Regional meeting for Renal transplant in the Caribbean. POS Nov 9 – 10, 2006
    
17. 
    Workshops on opportunistic infections. Belize, 2006
    
18. 
    Workshops on opportunistic infections CAREC, 2006
    
19. 
    Workshops on opportunistic infections Suriname 2006
    

Presentations made:

1. 
   Laboratory capacity to support care and treatment of HIV/AIDS patients at workshop on laboratory support for care and treatment of HIV/AIDS, CAREC, Jan 30, 2006
   
2. 
   Laboratory standards for tuberculosis diagnosis. Workshop on laboratory methods for diagnosis of tuberculosis, CAREC, May 15 – 19, 2006
   
3. 
   Processing of sample for preparation of smear by bleach method. Workshop on laboratory methods for diagnosis of tuberculosis, CAREC, May 15 – 19, 2006
   
4. 
   Strategic objectives for epidemiology and laboratory functions. Meeting of Caribbean National Epidemiologists and Laboratory Directors, CAREC, June 26 – 30, 2006.
   
5. 
   Effective network to meet public health needs of the region. Meeting of Caribbean National Epidemiologists and Laboratory Directors, CAREC, June 26 – 30, 2006.
   
6. 
   Consensus building on Laboratory standards for TB control in the Caribbean. Meeting of Caribbean National Epidemiologists and Laboratory Directors, CAREC, June 26 – 30, 2006
   
7. 
   PAHO Regional Rapid HIV test protocol. Meeting of Caribbean National Epidemiologists and Laboratory Directors, CAREC, June 26 – 30, 2006
   
8. 
   Pancap TB network in the Caribbean. Rio
   
9. 
   Laboratory in care and treatment of HIV/AIDS. Workshops on opportunistic infections. Belize, CAREC and Suriname 2006.
   
10. 
    Laboratory diagnosis of tuberculosis. Workshops on opportunistic infections. Belize, CAREC and Suriname 2006.
    
11. 
    Laboratory diagnosis of fungal infections. Workshops on opportunistic infections. Belize, CAREC and Suriname 2006.
    
12. 
    Laboratory diagnosis of STI. Workshops on opportunistic infections. Belize, CAREC and Suriname 2006
    

Patent Portfolio of Ashok Rattan

1.  Biswajit Das, Shahadal Ahmed, Ajay Singh Yadav, Soma Ghosh, Arti Gujrati, Pankaj Sharma, Ashok Rattan: Oxazolidinone derivatives as antimicrobials. Nov, 11 2010: US20100286211

2.  Mukund Keshao Gurjar, Madhusudan Nagorao Deshmukh, Anita Mehta, Sudershan Kumar Arora, Ashok Rattan: Substituted oxazolidinone derivatives. Oct, 1 2009: US20090247545
3.  Biswajit Das, Sonali Rudra, Sangita Sangita, Mohammad Salman, Ashok Rattan: Oxazolidinone derivatives as antimicrobials. Ranbaxy Laboratories. Sep, 22 2009: US7592335
4.  Biswajit Das, Mohammad Salman, Santosh Haribhau Kurhade, Ramadass Venkataramanan, Rajesh Kumar, Gobind Singh Kapkoti, Rita Katoch, Anish Bandyopadhyay, Ashok Rattan: Ketolide derivatives as antibacterial agents. Jul, 2 2009: US20090170790
5.  Biswajit Das, Rita Katoch, Atul Kashinath Hajare, Anish Bandyopadhyay, Santosh Haribhau Kurhade, Sujata Rathy, Ashok Rattan: Antibacterial Agents. Dec, 25 2008: US20080318878
6.  Biswajit Das, Mohammad Salman, Atul Kashinath Hajare, Ramadass Venkataramanan, Rita Katoch, Rajesh Kumar, Gobind Singh Kapkoti, Anjan Chakrabarti, Anish Bandyopadhyay, Santosh Haribhau Kurhade, Yogesh Baban Surase, Ashok Rattan: Ketolide Derivatives as Antibacterial Agents. Mohammad SALMAN, Ranbaxy Laboratories. Nov, 20 2008: US20080287376
7.  Anita Mehta, Sonali Rudra, Ajjarapu Venkata Subrahmanya Rajo Rao, Ajay Singh Yadav, Ashok Rattan: Oxazolidinone Derivatives as Antimicrobials. Sep, 4 2008: US20080214565
8.  Biswajit Das, Rita Katoch, Atul Kashinath Hajare, Gobind Singh Kapkoti, Anish Bandyopadhyay, Ramadass Venkataramanan, Rajesh Kumar, Santosh Haribhau Kurhade, Sujata Rathy, Anjan Chakrabarti, Yogesh Baban Surase, Mohammad Salman, Ashok Rattan: Antibacterial Agents. Ranbaxy Laboratories. Aug, 28 2008: US20080207536
9.  Biswajit Das, Sonali Rudra, Sangita Sangita, Mohammad Salman, Ashok Rattan: Oxazolidinone Derivatives as Antimicrobials. Ranbaxy Laboratories. Aug, 7 2008: US20080188470
10.  Biswajit Das, Mohammad Salman, Sachin Vilasrao Shelke, Atul Kashinath Hajare, Sanjay Talukdar, Sujata Rathy, Arani Pal, Ashok Rattan: 3'-N-Substituted-3-O-Substituted Erythronolide a Derivatives. Nov, 22 2007: US20070270484
11.  Gurjar Mukund Keshao, Deshmukh Madhusudan Nagorao, Arora Sudershan Kumar, Mehta Anita, Ashok Rattan: Substituted oxazolidinone derivatives. Ranbaxy Lab. Jul, 4 2007: EP1802613 (A1)
12.  Anita Mehta, Sonali Rudra, Ajjarapu Venkata Subrahmanya Raja Rao, Ashok Rattan, Ajay Singh Yadav: Oxazolidinone derivatives as antimicrobials. Dec, 28 2006: US20060293307
13.  Mohammad Salman, Jitendra Anant Sattigeri, Rita Latoch, Sachin Sethi, Ashok Rattan: Azole derivatives as antifungal agents. Aug, 10 2006: US20060178415
14.  Gurjar Mukund Keshao, Deshmukh Madhusudan Nagorao, Arora Sudershan Kumar, Mehta Anita, Ashok Rattan: Substituted oxazolidinone derivatives. Ranbaxy Laboratories, Gurjar Mukund Keshao, Deshmukh Madhusudan Nagorao, Arora Sudershan Kumar, Mehta Anita, Ashok Rattan. Apr, 20 2006: WO2006/040614
15.  Mohammad Salman, Ashwani Kumar Verma, Sanjay Malhotra, Ashok Rattan: Derivatives of 2,2,4-trisubstituted tetrahydrofuran an antifungal agents. Nov, 24 2005: US20050261330
16.  Anita Mehta, Sudershan K Arora, Biswajit Das, Abhijit Ray, Sonali Rudra, Ashok Rattan: Oxazolidinone piperazinyl derivatives as potential antimicrobials. Ranbaxy Laboratories. Oct, 18 2005: US6956040
17.  Biswajit Das, Anita Mehta, Ashok Rattan: Plymorphic forms of phenyl oxazolidinone derivatives. Sep, 22 2005: US20050209248
18.  Mohammad Salman, Ashwani Kumar Verma, Ashok Rattan: Azole derivatives as antifungal agents. Jun, 16 2005: US20050131041
19.  Anita Mehta, Sudershan R Arora, Bisjawit Das, Abhijit Ray, Sonali Rudra, Ashok Rattan: Oxazolidinone derivatives as antimicrobials. Dec, 16 2004: US20040254162
20.  Anita Mehta, Sonali Rudra, Ajjarapu Venkata Subramanya Raja Rao, Biswajit Das, Abhijit Ray, Akella Satya Surya Visweswara Srinivas, Sudershan R Arora, Ashok Rattan: Oxazolidinone derivatives as pontential antimicrobials. Dec, 2 2004: US20040242591

21.  Mohammad Salman, Rita Katoch, Ashwani Kumar Verma, Jitendra Sattigeri, Ashok Rattan: Azole compounds as anti-fungal agents. Dec, 2 2004: US20040242896

22.  Mohammed Salman, Rita Katoch, Ashwani Kumar Verma, Jitendra Sattigeri, Ashok Rattan: 吡咯化合物作為抗真菌製劑 / Azole compounds as anti-fungals agents. Ranbaxy Laboratories. Jul, 2 2004: HK1059388
23.  Anita Mehta, Arora K Sudershan, Biswajit Das, Abhijit Ray, Sonali Rudra, Ashok Rattan: Oxazolidinone derivatives as antimicrobials. Ranbaxy Laboratories. May, 11 2004: US6734307
24.  Mohammed Salman, Rita Katoch, Ashwani Kumar Verma, Jitendra Sattigeri, Ashok Rattan: Azole compounds as anti-fungal agents. Ranbaxy Laboratories. Mar, 23 2004: US6710049
25.  Anita Mehta, Sudershan K Arora, Biswajit Das, Abhijit Ray, Sonali Rudra, Ashok Rattan: 噁唑烷酮衍生物作為抗微生物劑 / Oxazolidinone derivatives as antimicrobials. Ranbaxy Laboratories. Jan, 9 2004: HK1055427
26.  Ashwani Kumar Verma, Sudershan K Arora, Jasbir Singh Arora, Ashok Rattan: Azole compounds as therapeutic agents for fungal infections. Ranbaxy Laboratories. Dec, 30 2003: US6670363
27.  Ashwani Kumar Verma, Sudershan K Arora, Jasbir Singh Arora, Ashok Rattan: 作為真菌感染的治療劑的唑類化合物 / Azole compounds as therapeutic agents for fungal infections. Ranbaxy Laboratories. Oct, 17 2003: HK1053306
28.  Anita Mehta, Sudershan K Arora, Biswajit Das, Abhijit Ray, Sonali Rudra, Ashok Rattan: Oxazolidinone derivatives as potential antimicrobials. Jun, 26 2003: US20030119817
29.  Mohammed Salman, Rita Katoch, Ashwani Kumar Verma, Jitendra Sattigeri, Ashok Rattan: Azole compounds as anti-fungal agents. Aug, 29 2002: US20020119984
30.  Anita Mehta, Sudershan K Arora, Biswajit Das, Abhijit Ray, Sonali Rudra, Ashok Rattan: Oxazolidinone derivatives as antimicrobials disease. Aug, 1 2002: US20020103186