1.Removal of a broken needle in the pterygomandibular space: a case report
Muhammad Usman Akhtar ; Kamran Ali
Archives of Orofacial Sciences 2012;7(1):34-36
Needle breakage following inferior alveolar nerve block is an unusual yet alarming complication in contemporary dental practice. We report a case of surgical retrieval of a broken needle in the pterygomandibular space following an inferior alveolar block in a 21 years old male. The postoperative recovery was uneventful and no complications were observed. Prompt removal of a broken needle is advisable to avoid complications.
2.An unusual case of chronic suppurative osteomyelitis of the mandible
Kamran Ali ; Ashfaq Akram ; Muhammad Usman Akhtar
Archives of Orofacial Sciences 2012;7(1):37-41
Osteomyelitis of the mandible, a serious complication of untreated odontogenic infection has been reported. This case report describes an interesting presentation of chronic suppurative osteomyelitis (CSO) of the mandible in a 13 years old anaemic male patient. Investigations revealed inversion of his permanent teeth leading to trans-cutaneous extra-oral eruption along with marked destruction of mandible on the affected side. The treatment included a pre surgical course of antibiotics followed by the removal of the retained second premolar tooth, surgical debridement of the affected bone, and resection of the cutaneous sinus tract. The post-operative healing was uneventful. A combination of antibiotic therapy and surgical debridement were effective in the treatment of chronic suppurative osteomyelitis.
3.Qualitative and semi-quantitative analysis of health-care pharmaceutical products using laser-induced breakdown spectroscopy
Nisar SOBIA ; Dastgeer GHULAM ; Shafiq MUHAMMAD ; Usman MUHAMMAD
Journal of Pharmaceutical Analysis 2019;9(1):20-24
Laser-induced breakdown spectroscopy (LIBS) is a sensitive optical technique that is capable of rapid multi-elemental analysis. The development of this technique for elemental analysis of pharmaceutical products may eventually revolutionize the field of human health. Under normal circumstances, the elemental analysis of pharmaceutical products based on chemical methods is time-consuming and complicated. In this investigation, the principal aim is to develop an LIBS-based methodology for ele-mental analysis of pharmaceutical products. This LIBS technique was utilized for qualitative as well as quantitative analysis of the elements present in Ca-based tablets. All the elements present in the tablets were detected and their percentage compositions were verified in a single shot, using the proposed instrument. These elements (e.g., Ca, Mg, Fe, Zn, and others) were identified by the wavelengths of their spectral lines, which were verified using the NIST database. The approximate amount of each element was determined based on their observed peaks and the result was in exact agreement with the content specification. The determination of the composition of prescription drug for patients is highly important in numerous circumstances. For example, the exploitation of LIBS may facilitate elemental decomposition of medicines to determine the accuracy of the stated composition information. Moreover, the approach can provide element-specific, meaningful, and accurate information related to pharmaceutical products.
4.Labour Induction With Randomized Comparison Of Oral And Intravaginal Misoprostol In Post Date Multigravida Women
Aqueela Ayaz ; Shazia Saeed ; Mian Usman Farooq ; Iftikhar Ahmad ; Muhammad Luqman Ali Bahoo ; Muhammad Saeed
Malaysian Journal of Medical Sciences 2009;16(1):34-38
The efficacy and safety of oral versus vaginal misoprostol for elective induction of labor in post
date multigravida with an unfavourable cervix was compared over a period of one year in the Bahawal
Victoria Hospital, Bahawalpur, Pakistan. Eightyeight multigravida post date women were divided into
two groups and given 50 mg misoprostol orally and 50 mg intravaginally, respectively. The induction
to onset of significant uterine contractions and delivery intervals were lower in the first group (7.8 h
vs. 8.9 h) when compared to (10.4 h vs. 12 h). The first group had a higher rate of Caesarean section
(7% vs. 4%; p>0.05), uterine hyperstimulation (9% vs. 5%; p>0.05), uterine tachysystole (23% vs. 14%;
p>0.05) and neonatal admissions to intensive care unit (12% vs. 4%; p>0.05) when compared to second
group. Fifty mg oral misoprostol has the potential to induce labor as safely and effectively as the
intravaginal route.
5.Discovery of human coronaviruses pan-papain-like protease inhibitors using computational approaches
A.Alamri MUBARAK ; Muhammad Tahir ul Qamar ; Mirza Usman MUHAMMAD ; M.Alqahtani SAFAR ; Froeyen MATHEUS ; Chen LING-LING
Journal of Pharmaceutical Analysis 2020;10(6):546-559
The papain-like protease (PLpro) is vital for the replication of coronaviruses (CoVs), as well as for escaping innate-immune responses of the host. Hence, it has emerged as an attractive antiviral drug-target. In this study, computational approaches were employed, mainly the structure-based virtual screening coupled with all-atom molecular dynamics (MD) simulations to computationally identify specific inhibitors of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) PLpro, which can be further developed as potential pan-PLpro based broad-spectrum antiviral drugs. The sequence, structure, and functional con-serveness of most deadly human CoVs PLpro were explored, and it was revealed that functionally important catalytic triad residues are well conserved among SARS-CoV, SARS-CoV-2, and middle east respiratory syndrome coronavirus (MERS-CoV). The subsequent screening of a focused protease in-hibitors database composed of ~7,000 compounds resulted in the identification of three candidate compounds, ADM_13083841, LMG_15521745, and SYN_15517940. These three compounds established conserved interactions which were further explored through MD simulations, free energy calculations, and residual energy contribution estimated by MM-PB(GB)SA method. All these compounds showed stable conformation and interacted well with the active residues of SARS-CoV-2 PLpro, and showed consistent interaction profile with SARS-CoV PLpro and MERS-CoV PLpro as well. Conclusively, the re-ported SARS-CoV-2 PLpro specific compounds could serve as seeds for developing potent pan-PLpro based broad-spectrum antiviral drugs against deadly human coronaviruses. Moreover, the presented infor-mation related to binding site residual energy contribution could lead to further optimization of these compounds.
6.In vitro biological screening of the stem of Desmodium elegans
Arshad KHAN ; Rabia USMAN ; Mingliang WANG ; Abdur RAUF ; Naveed MUHAMMAD ; Akhatar AMAN
Asian Pacific Journal of Tropical Biomedicine 2013;(9):711-715
Objective:To explore the medicinal importance of the stem of Desmodium elegans, methanolic extract, and its different solvent fractions were evaluated for brine shrimp lethality, insecticidal and phytotoxicity, antifungal, and antibacterial activities.
Methods:The methanolic extract and its solvent fractions were tested for cytotoxic, phytotoxic, insecticidal, antifungal, and antibacterial effects using our previous published protocols.
Results:The methanolic, DCM, ethyl acetate and n-butanol fractions exhibited insecticidal effect against Callosobruchus analis and Rhyzopertha dominic. The methanolic extract, n-hexane, DCM ethyl acetate and n-butanol showed 75, 85, 85, 65 and 5%phytotoxicity at the tested concentration of 500μg/mL respectively. The solvent fractions (DCM and ethyl acetate) were effective against F. solani (10%and 20%inhibition respectively). All the tested samples were devoid of cytotoxic and antibacterial effects.
Conclusions:It was concluded that this plant can be practiced for control of weeds and insects.
7.Detection and antibiotic susceptibility pattern of biofilm producing Gram positive and Gram negative bacteria isolated from a tertiary care hospital of Pakistan
Afreenish Hassan ; Javaid Usman ; Fatima Kaleem ; Maria Omair ; Ali Khalid ; Muhammad Iqbal
Malaysian Journal of Microbiology 2011;7(1):57-60
Microorganisms adhere to non-living material or living tissue, and form biofilms made up of extracellular polymers/slime.
Biofilm-associated microorganisms behave differently from free-floating bacteria with respect to growth rates and ability
to resist antimicrobial treatments and therefore pose a public health problem. The objective of this study is to detect the
prevalence of biofilm producers among Gram positive and Gram negative bacteria isolated from clinical specimens, and
to study their antimicrobial susceptibility pattern. The study was carried out from October 2009 to March 2010, at the
Department of Microbiology, Army Medical College/ National University of Sciences and Technology (NUST),
Rawalpindi, Pakistan. Clinical specimens were received from various wards of a tertiary care hospital. These were dealt
by standard microbiological procedures. Gram positive and Gram negative bacteria isolated were subjected to biofilm
detection by congo red agar method (CRA). Antimicrobial susceptibility testing of those isolates, which showed positive
results (slime production), was done according to the Kirby-Bauer disc diffusion technique. A total of 150 isolates were
tested for the production of biofilm/slime. Among them, 81 isolates showed positive results. From these 81, 51 were
Gram positive and 30 were Gram negative. All the 81(54%) slime producers showed reduced susceptibility to majority of
antibiotics. Bacterial biofilms are an important virulence factor associated with chronic nosocomial infection. Detection of
biofilm forming organisms can help in appropriate antibiotic choice.
8.Role of iron deficiency anemia in the propagation of beta thalssemia gene.
Muhammad USMAN ; Moinuddin MOINUDDIN ; Syed Azhar AHMED
Korean Journal of Hematology 2011;46(1):41-44
BACKGROUND: The diagnostic criterion for beta thalassemia trait (BTT) is elevated Hb-A2 levels. Iron deficiency anemia (IDA) reduces the synthesis of Hb-A2, resulting in reduced Hb-A2 levels, so patients with co-pathological conditions BTT with IDA, may have a normal level of Hb-A2. Many socio-economic factors like unawareness, poor diagnostic facilities, and cost of molecular diagnosis (for screening purposes) result in interpretation of these subjects as normal. METHODS: Venous blood samples from 200 unmarried females having a family history of thalassemia were collected, and basic hematological parameters, hemoglobin electrophoresis, and molecular analysis for beta thalassemia were done. Patients with IDA and patients with co-pathological conditions BTT and IDA were treated with oral iron. These subjects were then followed for a period of 20 weeks. RESULTS: Of the 200 females, 34 were found to be anemic. Hemoglobin electrophoresis identified 16 of these patients as BTT. Molecular analysis of all patients confirmed this diagnosis, but identified 8 additional patients with BTT. Eight patients that were not detected with hemoglobin electrophoresis were found to have co-pathology of BTT with IDA. CONCLUSION: Patients with the co-pathological condition BTT with IDA may be interpreted as being normal, as they have normal Hb-A2 levels. These misdiagnosed subjects when marry with BTT have the potential to produce beta thalassemia major in offspring. This is one of the factors playing a major role in the propagation of beta thalassemia gene in Pakistani population, and become a serious hindrance for the thalassemia prevention program in Pakistan.
Anemia, Iron-Deficiency
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beta-Thalassemia
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Electrophoresis
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Female
;
Hemoglobins
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Humans
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Iron
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Mass Screening
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Pakistan
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Single Person
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Thalassemia
9.AI-powered COVID-19 forecasting: a comprehensive comparison of advanced deep learning methods
Muhammad Usman TARIQ ; Shuhaida Binti ISMAIL
Osong Public Health and Research Perspectives 2024;15(2):115-136
Objectives:
The coronavirus disease 2019 (COVID-19) pandemic continues to pose significant challenges to the public health sector, including that of the United Arab Emirates (UAE). The objective of this study was to assess the efficiency and accuracy of various deep-learning models in forecasting COVID-19 cases within the UAE, thereby aiding the nation’s public health authorities in informed decision-making.
Methods:
This study utilized a comprehensive dataset encompassing confirmed COVID-19 cases, demographic statistics, and socioeconomic indicators. Several advanced deep learning models, including long short-term memory (LSTM), bidirectional LSTM, convolutional neural network (CNN), CNN-LSTM, multilayer perceptron, and recurrent neural network (RNN) models, were trained and evaluated. Bayesian optimization was also implemented to fine-tune these models.
Results:
The evaluation framework revealed that each model exhibited different levels of predictive accuracy and precision. Specifically, the RNN model outperformed the other architectures even without optimization. Comprehensive predictive and perspective analytics were conducted to scrutinize the COVID-19 dataset.
Conclusion
This study transcends academic boundaries by offering critical insights that enable public health authorities in the UAE to deploy targeted data-driven interventions. The RNN model, which was identified as the most reliable and accurate for this specific context, can significantly influence public health decisions. Moreover, the broader implications of this research validate the capability of deep learning techniques in handling complex datasets, thus offering the transformative potential for predictive accuracy in the public health and healthcare sectors.
10.Increased incidence of adrenal gland injury in blunt abdominal trauma: a computed tomography-based study from Pakistan.
Muhammad Usman AZIZ ; Saleha SHAHZAD ; Muhammad Ayiub MANSOOR
Chinese Journal of Traumatology 2014;17(1):31-34
OBJECTIVETo determine the frequency of adrenal injuries in patients presenting with blunt abdominal trauma by computed tomography (CT).
METHODSDuring a 6 month period from January 1, 2011 to June 30, 2011, 82 emergency CT examinations were performed in the setting of major abdominal trauma and retrospectively reviewed for adrenal gland injuries.
RESULTSA total of 7 patients were identified as having adrenal gland injuries (6 males and 1 female). Two patients had isolated adrenal gland injuries. In the other 5 patients with nonisolated injuries, injuries to the liver (1 case), spleen (1 case), retroperitoneum (2 cases) and mesentery (4 cases) were identified. Overall 24 cases with liver injuries (29%), 11 cases with splenic injuries (13%), 54 cases with mesenteric injuries (65%), 14 cases (17%) with retroperitoneal injuries and 9 cases with renal injuries were identified.
CONCLUSIONAdrenal gland injury is identified in 7 patients (11.7%) out of a total of 82 patients who underwent CT after major abdominal trauma. Most of these cases were nonisolated injuries. Our experience indicates that adrenal injury resulting from trauma is more common than suggested by other reports. The rise in incidence of adrenal injuries could be attributed to the mode of injury.
Abdominal Injuries ; diagnostic imaging ; epidemiology ; Adrenal Glands ; diagnostic imaging ; injuries ; Adult ; Aged ; Child ; Child, Preschool ; Female ; Humans ; Male ; Middle Aged ; Pakistan ; epidemiology ; Tomography, X-Ray Computed ; Wounds, Nonpenetrating ; diagnostic imaging ; epidemiology