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Search Results: 1 - 10 of 3777 matches for " Tahir Abbas "
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Metachronous double malignancy involving the kidney and the breast: A case report  [PDF]
Osama Ahmed, Tahir Abbas
Case Reports in Clinical Medicine (CRCM) , 2014, DOI: 10.4236/crcm.2014.32016
Abstract:

The occurrence of multiple primary cancers is rare; it can be missed as a disease progression. The etiology remains controversial. We report a case of a 55-year-old female with metastatic renal cell carcinoma treated with sutent followed by left sided nephrectomy. Follow-up CT showed increase in the size of the right axillary lymph nodes which was proven after biopsy to be metastatic adenocarcinoma of the breast. Any suspicious disease progression in a single site not compatible with disease history should be biopsied for confirmation. The relationship between renal cell carcinoma and breast cancer is still unclear, and more case reports are required to determine this relationship.

Paraneoplastic Leukemoid Reaction in a Patient with Urothelial Carcinoma: A Case Report  [PDF]
Aleksi E. Suo, Tahir Abbas
Case Reports in Clinical Medicine (CRCM) , 2014, DOI: 10.4236/crcm.2014.35057
Abstract:

Introduction: Leukemoid reactions in cancer are rare and associated with a poor prognosis. The mechanism driving paraneoplastic leukemoid reactions appears to be gain-of-function granulocyte-colony stimulating factor (G-CSF) secretion by tumour cells. Case Presentation: A 57-year-old male smoker presented with a one-year history of painless frank hematuria and three kilograms weight loss. Cystoscopy revealed a high-grade urothelial carcinoma with sarcomatoid differentiation. The patient was treated by radical cystoprostatectomy, bilateral pelvic lymph node dissection and formation of an ileal conduit. In the absence of bone marrow infiltrations, recurrence of the urothelial carcinoma three months later was associated with a paraneoplastic leukemoid reaction with a white blood cell count peaking at 82.62 × 109/l. Unfortunately, his condition continued to deteriorate and he died shortly thereafter. Conclusion: Monitoring of white blood cell counts in paraneoplastic leukemoid reactions can be a useful indicator of response of the malignancy to chemotherapy or radiotherapy and an indication of relapse after treatment. Paraneoplastic leukemoid reactions are caused by G-CSF secretion by tumour cells and are associated with a poor prognosis. Whether G-CSF signaling plays a role in the aggressive nature of these cancers is currently unknown.

Snake-Bite Gangrene in Children: A Report of Two Cases
AD Abbas, AM Abubakar, C Tahir
Journal of Surgical Technique and Case Report , 2009,
Abstract: Snake-bite can be both life and limb threatening, especially when there is envenomation. Early intervention in a fairly equipped health facility can go a long way in preventing the morbidity and mortality that can result from delay in initiating treatment. In this paper we report two cases of snakebite to the lower limbs in children that were both complicated by gangrene which led to major limb amputation in both. These are avoidable complications that should have been averted by appropriate care immediately after the snake-bite.
Adjuvant treatment for high risk melanoma. Where are we now?
Anand Sharma,Tahir Abbas,Sarah Gwynne
Oncology Reviews , 2011, DOI: 10.4081/109
Abstract: The survival rate for stage 3 and 4 melanoma is very poor. In the absence of effective treatments for metastatic disease focus has shifted to the adjuvant setting. While we are now able to identify those who are at high risk of recurrence the role of adjuvant systemic treatment in these individuals is still undefined. This is partly due to the lack of effective treatments, despite the advances in the understanding of the biology of melanoma and the natural history of the disease process. Of the various treatments studied in the adjuvant setting only interferons and vaccines have been shown to affect the clinical outcome but no agent has been accepted as a standard, with differences in practice between the US and Europe. In this review article we will report what is known at this time about the different agents studied in the adjuvant setting and refer to some new areas of research that may play a bigger role in the future management of melanoma.
Effect of Antiviral Therapy on Hepatitis C Virus Related Glomerulopathy
Abbas Ghulam,Hussain Shahid,Shafi Tahir
Saudi Journal of Kidney Diseases and Transplantation , 2008,
Abstract: To determine the efficacy of antiviral therapy in hepatitis C virus associated glome-rulopathy, we studied 30 patients with HCV-associated glomerulopathy at Sheikh Zayed Hospital, Lahore, Pakistan from June 2004 to February 2007. Membranoproliferative glomerulonephritis (MPGN) was the commonest kidney lesion, being reported in 25/30 (83%), followed by membra-nous glomerulonephritis (MGN) in 3/30 (10%) and mesangioproliferative glomerulonephritis (MesGN) in 2/30 (7%). Cryoglobulinaemia was positive in 8/20 (40%) cases. Most common HCV genotype was 3a. All the patients received interferon alpha combined with ribavirin therapy for 6-12 months based on viral genotypes and doses were adjusted according to renal function. Anti-viral response was achieved in the form of aviremia at completion of 6 months treatment in 8/30 (26.6%), decreased transaminases levels from a mean of 96.4 ± 72.2 to 60.1 ± 44.3 IU/L, p= 0.005, 24-hour proteinuria decreased significantly from a mean of 4.8 g to 1.20 g, p= 0.001, and complement C3 and C4 concentrations returned to normal in those subjects who responded to treatment. The rate of relapse was 50%. We conclude that though the overall antiviral response of HCV was not high, there was a significant reduction in proteinuria suggesting indirectly an improvement in renal patho-logy. Further studies with large number of patients with follow-up renal biopsies are warranted.
Parasitic Effects of Solitary Endoparasitoid, Aenasius bambawalei Hayat (Hymenoptera: Encyrtidae) on Cotton Mealybug, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae)  [PDF]
Muhammad Qammar Shahzad, Zain Ul Abdin, Saqi Kosar Abbas, Muhammad Tahir, Fiaz Hussain
Advances in Entomology (AE) , 2016, DOI: 10.4236/ae.2016.42010
Abstract: Parasitization has an enormous impact on host physiology, development and reproduction. The effect of parasitism by endoparasitoid, Aenasius bambawalei Hayat (Hymenoptera: Encyrtidae) on survival and reproduction of mealybug, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) on different host stages was studied. Our data reveals that host mealybugs parasitized by the wasp at the 2nd instar stage were died during the 3rd instar stage of their life. However, those parasitized at the 3rd instar stage could reach the adult stage and were able to produce their progeny. After 6 days of parasitization, all parasitized hosts of the 2nd, 3rd and adult stages were died except the 1st instar. Results showed that parasitized host mealybugs had significantly lower reproductive potential than the unparasitized ones. Maximum parasitoid emergence was recorded in the 3rd instar host stage. This basic research regarding survival and reproduction of the parasitized host mealybugs would be very helpful in devising sustainable biological control strategies for cotton mealybug.
Susceptibility of Culex quinquefasciatus (Diptera: Culicidae) to malathion in Sargodha district, Pakistan  [PDF]
Hafiz Muhammad Tahir, Kishwar Hussain, Azhar Abbas Khan, Sajida Naseem, Hamza Tanveer Malik, Abida Butt, Rabia Yaqoob
Open Journal of Animal Sciences (OJAS) , 2013, DOI: 10.4236/ojas.2013.34A1001
Abstract: The present study was designed to evaluate the susceptibility of Culex quinquefasciatuns against malathion in Sargodha district of Pakistan. The activities of detoxifying enzymes i.e., β-esterases, GSTs and monooxygenases were also estimated. Our results revealed 100 percent mortality in insecticide treated groups after 24 hours of exposure. There was no difference in the activities of insecticide detoxifying enzymes between control and treated groups. We concluded from our work that malathion is still effective against C. quinquefasciatuns in the area for control of mosquito population.
Effect of Maturity on Phenolics (Phenolic Acids and Flavonoids) Profile of Strawberry Cultivars and Mulberry Species from Pakistan
Tahir Mahmood,Farooq Anwar,Mateen Abbas,Nazamid Saari
International Journal of Molecular Sciences , 2012, DOI: 10.3390/ijms13044591
Abstract: In this study, we investigated how the extent of ripeness affects the yield of extract, total phenolics, total flavonoids, individual flavonols and phenolic acids in strawberry and mulberry cultivars from Pakistan. In strawberry, the yield of extract (%), total phenolics (TPC) and total flavonoids (TFC) ranged from 8.5–53.3%, 491–1884 mg gallic acid equivalents (GAE)/100 g DW and 83–327 mg catechin equivalents (CE)/100 g DW, respectively. For the different species of mulberry the yield of extract (%), total phenolics and total flavonoids of 6.9–54.0%, 201–2287 mg GAE/100 g DW and 110–1021 mg CE/100 g DW, respectively, varied significantly as fruit maturity progressed. The amounts of individual flavonols and phenolic acid in selected berry fruits were analyzed by RP-HPLC. Among the flavonols, the content of myricetin was found to be high in Morus alba (88 mg/100 g DW), the amount of quercetin as high in Morus laevigata (145 mg/100 g DW) while kaempferol was highest in the Korona strawberry (98 mg/100 g DW) at fully ripened stage. Of the six phenolic acids detected, p-hydroxybenzoic and p-coumaric acid were the major compounds in the strawberry. M. laevigata and M. nigra contained p-coumaric acid and vanillic acid while M. macroura and M. alba contained p-hydroxy-benzoic acid and chlorogenic acid as the major phenolic acids. Overall, a trend to an increase in the percentage of extraction yield, TPC, TFC, flavonols and phenolic acids was observed as maturity progressed from un-ripened to fully-ripened stages.
Ethyl (3E)-3-[2-(4-bromophenylsulfonyl)hydrazin-1-ylidene]butanoate
Shahzad Murtaza,Naghmana Kausar,Aadil Abbas,M. Nawaz Tahir
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812019265
Abstract: The asymmetric unit of title compound, C12H15BrN2O4S, contains two molecules (A and B), with slightly different conformations: the bromophenyl rings and the SO2 planes of the sulfonyl groups are oriented at dihedral angles of 50.2 (2) (molecule A) and 58.24 (7)° (molecule B), and the ethyl acetate groups make dihedral angles of 63.99 (19)° (A) and 65.35 (16)° (B) with their bromophenyl groups. In the crystal, both molecules exist as inversion dimers linked by pairs of N—H...O hydrogen bonds, which generate R22(14) loops. The dimers are linked by C—H...O interactions.
2-[(2-Aminophenyl)sulfanyl]-N-(4-methoxyphenyl)acetamide
Shahzad Murtaza,M. Nawaz Tahir,Javaria Tariq,Aadil Abbas
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812024178
Abstract: In the title compound, C15H16N2O2S, the dihedral angle between the 4-methoxyaniline and 2-aminobenzenethiole fragments is 35.60 (9)°. A short intramolecular N—H...S contact leads to an S(5) ring. In the crystal, molecules are consolidated in the form of polymeric chains along [010] as a result of N—H...O hydrogen bonds, which generate R32(18) and R43(22) loops. The polymeric chains are interlinked through C—H...O interaction and complete R22(8) ring motifs.
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