MyMedR

Single-nucleotide polymorphisms and mRNA expression of CYP1B1 influence treatment response in triple negative breast cancer patients undergoing chemotherapy

Abdul Aziz AA, Md Salleh MS, Mohamad I, Krishna Bhavaraju VM, Mazuwin Yahya M, Zakaria AD, et al.

J Genet, 2018 Dec;97(5):1185-1194.

PMID: 30555068

Triple negative breast cancer (TNBC) is typically associated with poor and interindividual variability in treatment response. Cytochrome P450 family 1 subfamily B1 (CYP1B1) is a metabolizing enzyme, involved in the biotransformation of xenobiotics and anticancer drugs. We hypothesized that, single-nucleotide polymorphisms (SNPs), CYP1B1 142 C>G, 4326 C>G and 4360 A>G, and CYP1B1 mRNA expression might be potential biomarkers for prediction of treatment response in TNBC patients. CYP1B1 SNPs genotyping (76 TNBC patients) was performed using allele-specific polymerase chain reaction (PCR) and PCR-restriction fragment length polymorphism methods and mRNA expression of CYP1B1 (41 formalin-fixed paraffin embeddedblocks) was quantified using quantitative reverse transcription PCR. Homozygous variant genotype (GG) and variant allele (G) of CYP1B1 4326C>G polymorphism showed significantly higher risk for development of resistance to chemotherapy with adjusted odds ratio (OR): 6.802 and 3.010, respectively. Whereas, CYP1B1 142 CG heterozygous genotype showed significant association with goodtreatment response with adjusted OR: 0.199. CYP1B1 142C-4326G haplotype was associated with higher risk for chemoresistance with OR: 2.579. Expression analysis revealed that the relative expression of CYP1B1 was downregulated (0.592) in cancerous tissue compared with normal adjacent tissues. When analysed for association with chemotherapy response, CYP1B1 expression was found to be significantly upregulated (3.256) in cancerous tissues of patients who did not respond as opposed to those of patients who showed response to chemotherapy. Our findings suggest that SNPs together with mRNA expression of CYP1B1 may be useful biomarkers to predict chemotherapy response in TNBC patients.

microRNA expression and recurrence risk prediction in Triple Negative Breast Cancer patients

AbdulAziz A, MdSalleh M, Mohamad I, Bhavaraju V, Gan S, Ankathil R

Ann Oncol, 2017 Oct;28 Suppl 9:ix79.

PMID: 32120675 DOI: 10.1093/annonc/mdx697.022

A Critical Appraisal of COVID-19 in Malaysia and Beyond

Abdullah JM, Wan Ismail WFN, Mohamad I, Ab Razak A, Harun A, Musa KI, et al.

Malays J Med Sci, 2020 Mar;27(2):1-9.

PMID: 32308536 DOI: 10.21315/mjms2020.27.2.1

When the first report of COVID-19 appeared in December 2019 from Wuhan, China, the world unknowingly perceived this as another flu-like illness. Many were surprised at the extreme steps that China had subsequently taken to seal Wuhan from the rest of the world. However, by February 2020, the SARS-CoV-2 virus, which causes COVID-19, had spread so quickly across the globe that the World Health Organization officially declared COVID-19 a pandemic. COVID-19 is not the first pandemic the world has seen, so what makes it so unique in Malaysia, is discussed to avoid a future coronacoma.

Fulltext ARCHERY: a prospective observational study of artificial intelligence-based radiotherapy treatment planning for cervical, head and neck and prostate cancer - study protocol

Aggarwal A, Court LE, Hoskin P, Jacques I, Kroiss M, Laskar S, et al.

BMJ Open, 2023 Dec 07;13(12):e077253.

PMID: 38149419 DOI: 10.1136/bmjopen-2023-077253

INTRODUCTION: Fifty per cent of patients with cancer require radiotherapy during their disease course, however, only 10%-40% of patients in low-income and middle-income countries (LMICs) have access to it. A shortfall in specialised workforce has been identified as the most significant barrier to expanding radiotherapy capacity. Artificial intelligence (AI)-based software has been developed to automate both the delineation of anatomical target structures and the definition of the position, size and shape of the radiation beams. Proposed advantages include improved treatment accuracy, as well as a reduction in the time (from weeks to minutes) and human resources needed to deliver radiotherapy.

METHODS: ARCHERY is a non-randomised prospective study to evaluate the quality and economic impact of AI-based automated radiotherapy treatment planning for cervical, head and neck, and prostate cancers, which are endemic in LMICs, and for which radiotherapy is the primary curative treatment modality. The sample size of 990 patients (330 for each cancer type) has been calculated based on an estimated 95% treatment plan acceptability rate. Time and cost savings will be analysed as secondary outcome measures using the time-driven activity-based costing model. The 48-month study will take place in six public sector cancer hospitals in India (n=2), Jordan (n=1), Malaysia (n=1) and South Africa (n=2) to support implementation of the software in LMICs.

ETHICS AND DISSEMINATION: The study has received ethical approval from University College London (UCL) and each of the six study sites. If the study objectives are met, the AI-based software will be offered as a not-for-profit web service to public sector state hospitals in LMICs to support expansion of high quality radiotherapy capacity, improving access to and affordability of this key modality of cancer cure and control. Public and policy engagement plans will involve patients as key partners.

Fulltext Outcome of a newborn hearing screening program in a tertiary hospital in Malaysia: the first five years

Ahmad A, Mohamad I, Mansor S, Daud MK, Sidek D

Ann Saudi Med, 2011 Jan-Feb;31(1):24-8.

PMID: 21245595 DOI: 10.4103/0256-4947.75774

Universal newborn hearing screening (UNHS) was started in the Hospital Universiti Sains Malaysia (HUSM) in January 2003. To comply with international standards, we determined the outcome of the newborn hearing screening program for the first 5 years of its implementation, from January 2003 to December 2007.

Traumatic Neck Injury: An Accidental Impalement by a Needlefish

Ali AA, Gurung R, Hayati F, Zakaria AD, Mohamad I, Ching FF

Wilderness Environ Med, 2021 Dec;32(4):517-521.

PMID: 34479771 DOI: 10.1016/j.wem.2021.07.006

Encounters between marine animals and humans can result in critical injury and fatal complications. We highlight a 20-y-old male who sustained a penetrating injury to the neck as a result of impalement by needlefish (Tylosurus sp) while snorkeling. He sustained a penetrating injury in the posterior triangle of the neck. On presentation, he was stabilized and received empirical antibiotics, analgesia, and antitetanus toxoid injection before being transferred to a tertiary center. On presentation to the tertiary hospital, the patient was hemodynamically stable with no clinical evidence of injury to surrounding neck structures, and this was confirmed using computed tomography. The patient underwent local wound exploration and retrieval of the needlefish beak under general anesthesia. The wound was left open to heal by secondary intention. The patient was discharged with oral antibiotics and went on to make a complete recovery.

Fulltext A child with coated tonsils

Appannan VR, Mohamad I, Ramli RR, Johan KB

Malays Fam Physician, 2018;13(1):55-56.

PMID: 29796214 MyJurnal

A 5-year-old girl presented with a history of
fever for four days associated with odynophagia.
She was treated with amoxycillin prescribed
by a general practitioner for 3 days prior to
presentation. However, the symptoms were
worsening and associated with drooling of
saliva and poor oral intake. There was history
of recurrent acute tonsillitis in the past two
years, with 5 to 6 episodes per year. The child
had completed regular immunizations up to her
current age. There was no similar presentation
amongst family members and friends. (Copied from article).

Fulltext Malignant melanoma of parotid gland in a child-our unique experience

Apparau D, Apparau H, Mohamad I, Bhavaraju VMK

AME Case Rep, 2018;2:4.

PMID: 30264000 DOI: 10.21037/acr.2018.01.06

Malignant melanoma (MM) of parotid gland is a rare condition. This pathology is often a result of secondary metastasis from primary lesions in the head and neck skin. A MM arising de novo in parotid gland is very rare. This malignant tumour is more prevalent in adults rather than children and it tends to have several distinct features. Treatment options are limited especially for an advanced lesion. Despite best treatments this condition carries a poor prognosis. This case details our experience in treating a child with MM of parotid gland without other primary cutaneous lesions.

Fulltext Kimura Disease: A differential diagnosis in a nephrotic child

Aziz A, Mohamad I, Zawawi N

Malays Fam Physician, 2018;13(2):32-35.

PMID: 30302182

Kimura disease presents as benign lesion and is commonly present among the Asian population. It is a disease with a favourable prognosis and a peak age of onset in the third decade. It is a chronic inflammatory disorder of unknown etiology that involves the lymph nodes and subcutaneous tissues of the head and neck region. We report a case of a 15-year-old boy with multiple Kimura lymphadenopathies involving the left posterior auricular region as well as the anterior and posterior triangles of the neck.

Fulltext Kimura disease: a differential diagnosis in a nephrotic child

Aziz, A., Mohamad, I., Zawawi, N.

Malaysian Family Physician, 2018;13(2):32-35.

MyJurnal

Kimura disease presents as benign lesion and is commonly present among the Asian population. It
is a disease with a favourable prognosis and a peak age of onset in the third decade. It is a chronic
inflammatory disorder of unknown etiology that involves the lymph nodes and subcutaneous
tissues of the head and neck region. We report a case of a 15-year-old boy with multiple Kimura
lymphadenopathies involving the left posterior auricular region as well as the anterior and posterior
triangles of the neck.

Fulltext Posterior Ethmoid Nodular Fasciitis

Baki AM, Ramli R, Noor RM, Mohamad I, Jais M

Medeni Med J, 2020;35(3):276-280.

PMID: 33110682 DOI: 10.5222/MMJ.2020.90093

Nodular fasciitis (NF) is an uncommon and benign tumour-like fibroblastic proliferation that is difficult to distinguish from sarcoma both clinically and histologically. In addition, it is a type of lesion characterised by having a potential for spontaneous regression. NF is frequently misdiagnosed due to its rapid growth, rich cellularity, and mitotic figure. Although NF is only rarely diagnosed in children, the head and neck represent the most common locations for NF among this population. The cause of NF remains unknown, however trauma is believed to be an important triggering factor. We describe an unusual case of NF in the posterior ethmoid sinus in a six-year-old boy with no history of trauma. The NF was incidentally noted on a computed tomography scan after the patient complained of a squint. The diagnosis of NF was also supported by histopathology and specific immunohistological staining. A surgical biopsy was performed, and no recurrence was observed after one year.

Fulltext Extensive dural sinus thrombosis and bilateral lateral rectus palsy as an uncommon complication of chronic suppurative otitis media

Balasubramanian A, Mohamad I, Sidek D

BMJ Case Rep, 2013;2013.

PMID: 23355565 DOI: 10.1136/bcr-2012-007414

Dural venous sinus thrombosis, especially of the sigmoid sinus, is a known but uncommon intracranial extradural complication of chronic suppurative otitis media. Even rarer is the simultaneous occurrence of bilateral abducens palsy in the same patient. We report the case of an adolescent male who presented with signs of raised intracranial pressure, diplopia and bilateral lateral rectus palsy associated with a history of left ear discharge and neck swelling. Extensive dural sinus thrombosis extending right up to the left internal jugular vein was confirmed on CT imaging. The patient was successfully treated with thrombolytic agents and antibiotic therapy. The pathophysiology of the concurrent complications is discussed.

Detection of dynorphin 1-17 biotransformation fragments in human nasal polyps by UPLC-QTOF-MS

Ballouze R, Ismail MN, Abu Kassim NS, Salhimi SM, Mohamad I, Abd Mutalib NS, et al.

Anal Bioanal Chem, 2024 Jan;416(2):545-557.

PMID: 38040942 DOI: 10.1007/s00216-023-05061-3

Chronic rhinosinusitis with nasal polyps (CRSwNP) is a persistent inflammation of the sinonasal mucosa. CRSwNP treatments are associated with inconsistent efficacy and recurrence of symptoms. Dynorphin 1-17 (DYN 1-17) and its fragments have been shown to modulate the immune response in various inflammatory conditions. This study aimed to investigate the effect of different pH and degrees of inflammation on DYN 1-17 metabolism in human CRSwNP tissues. DYN 1-17 was incubated with grade 3 and grade 4 inflamed tissues of CRSwNP patients at pH 5.5 and pH 7.4 over a range of incubation periods. The resulting fragments were identified using an ultra-performance liquid chromatography (UPLC) system coupled to quadrupole-time of flight (QTOF) mass spectrometry based on their accurate mass. The rate of DYN 1-17 fragmentation was slower at pH 5.5 in comparison to pH 7.4. The extent and rate of metabolism of DYN 1-17 were much lower in grade 3 inflamed tissue (31-32 fragments) than in grade 4 (34-41 fragments). N-Terminal fragments (DYN 1-15, 1-11, 1-10, and 1-6) were metabolized slower at pH 5.5 as compared to pH 7.4. DYN 1-12, 1-8, 2-10, 4-10, 5-10, and 8-14 were only observed under the inflammatory pH while DYN 5-17 and 6-17 were only identified upon incubation with grade 4 CRSwNP tissues. DYN 1-17 metabolism was significantly affected by the pH level and the severity of the inflammation of CRSwNP tissues, indicating the potential roles of DYN 1-17 and its fragments in modulating the inflammatory response and their avenue as therapeutics in future studies.

Pediatric lupus nephritis presenting with terminal renal failure

Besouw MT, Vande Walle JG, Ilias MI, Raes AM, Prytula AA, Claeys L, et al.

Acta Clin Belg, 2016 Dec;71(6):455-457.

PMID: 27169353

A 12-year-old Congolese girl presented with acute renal failure, edema, hypertension, hemoptysis, hematuria, and proteinuria after a history of throat infection. Renal ultrasound showed kidneys of normal size, with increased echogenicity of the cortical parenchyma and decreased corticomedullary differentiation. Other additional investigations showed pancytopenia with decreased complement (low C3 and C4). Antinuclear antibodies were strongly positive, including anti-double stranded DNA. Renal biopsy confirmed severe grade IV lupus nephritis. She was treated with high-dose steroids, mycophenolate mofetil and hydroxychloroquine, in addition to hemodialysis. After one week of intensive treatment, diuresis recovered and dialysis could be stopped after six sessions. We describe an uncommon case of severe lupus nephritis, presenting with terminal renal failure. Since the rarity of this disease presentation, other more common diagnoses have to be considered. Once the diagnosis of lupus nephritis is established, a choice has to be made between the different induction treatment protocols. The patient's ethnic background and other supportive therapies, such as the need for dialysis, can help to make this choice.

Fulltext Bilateral peritonsillar abscess: A rare emergency

Boon C, Wan Mohamad WE, Mohamad I

Malays Fam Physician, 2018;13(1):41-44.

PMID: 29796210 MyJurnal

Peritonsillar abscess, or quinsy, is a rare complication of acute tonsillitis. It usually presents with odynophagia, trismus, and muffled voice, reflecting the space-occupying lesion in the oral cavity. Examination reveals a unilateral swelling on either side of the soft palate, which drains thick pus after an incision is made. It is regarded as an emergency as an upper airway obstruction can develop. Bilateral peritonsillar abscess is a rare presentation and results in catastrophic sequelae. We present a case of bilateral peritonsillar abscess that was initially referred by a primary care centre facing a dilemma in diagnosis. Prompt diagnosis and fast drainage are warranted to avoid unwanted morbidity, and, also, mortality.

Fulltext Image-guided system endoscopic drainage of orbital abscess caused by methicillin-resistant Staphylococcus aureus in an infant

Chai-Lee T, Nadarajah S, Abdullah B, Mohamad I, Maruthamuthu T, Nadarajan C, et al.

Int J Surg Case Rep, 2017;33:119-123.

PMID: 28314224 DOI: 10.1016/j.ijscr.2017.02.051

INTRODUCTION: The management of orbital abscesses in neonates and infants is very challenging. Surgical drainage of the abscess is aimed at removing the pus and preventing blindness. We describe a case of orbital abscess in an infant that was caused by methicillin-resistant Staphylococcus aureus and that was successfully drained with image-guided endoscopic surgery.

PRESENTATION OF CASE: A 39-day-old infant presented with progressive right maxillary swelling complicated by methicillin-resistant Staphylococcus aureus orbital abscess. Tooth bud abscess was the most likely primary cause and a combination of intravenous antibiotics was initially prescribed. The collection of intra-orbital pus was removed using image-guided system-aided endoscopic surgical drainage.

DISCUSSION: Prompt diagnosis and management are very crucial. Endoscopic drainage of these abscesses in children has been described. Image-guided drainage of the orbital abscess is a newer technique that has been reported in a teenager and in adult patients. This is the first reported case of endoscopic orbital drainage surgery in an infant. The procedure was performed successfully. This approach provides for better identification of the anatomical structures in a very young patient. Injuries to the medial rectus, globe and optic nerve can be avoided with this technique.

CONCLUSION: Aggressive management of orbital abscesses in infants is mandatory. Image-guided endoscopic orbital drainage offers precise visualization and a safer technique in a relatively smaller orbit.

Fulltext A Rare Intraorbital Mass: An Isolated Mucocele

Che Mat CMH, Mustapha F, Noor RM, Ramli R, Mohamad I

Medeni Med J, 2020;35(4):344-348.

PMID: 33717628 DOI: 10.5222/MMJ.2020.01057

Mucocele is a mucous filled benign cystic lesion. It develops due to obstruction of any natural os-tium of the paranasal sinus. Even though being benign, it has capability to erode and cause thinning the adjacent bony structures. Isolated intraorbital mucocele without paranasal sinus disease is a rare condition. We present a 39-year-old female patient with right medial canthal swelling without any nasal symptoms, and normal nasoendoscopic finding. Imaging revealed the lesion as a right ethmoidal mucocele with normal paranasal sinuses. However intraoperatively, it was an isolated intraorbital lesion, lateral to lamina papyracea with thick-yellowish mucin discharge.

Fulltext MJMS at the Dawn of Its Electronic Era

Dewiputri WI, Mohamad I

Malays J Med Sci, 2011 Jan;18(1):1-5.

PMID: 22135566 MyJurnal

This special editorial assessed the recent developments in Malaysian Journal of Medical Sciences (MJMS) and examined the characteristics of the submission, peer review, and publication processes for MJMS. This retrospective analysis used information about the manuscripts submitted to MJMS during the one-year period (from 1 June 2010 to 31 May 2010) since the start of current online submission and review system (ScholarOne(™) Manuscripts, Thomson Reuters). In addition, we also discussed the future directions of MJMS. Finally, we would like to recommend an annual internal audit for MJMS, which is very useful to monitor the growth of this journal progressively.

Kimura Disease with Parotid Swelling and Cervical Lymphadenopathy: A Case Report and Literature Review

Eh Dam VSK, Mohamad S, Mohamad I

Medeni Med J, 2020;35(2):170-174.

PMID: 32733768 DOI: 10.5222/MMJ.2020.84594

Kimura disease (KD) is a rare chronic benign inflammatory disorder of unknown etiology that is prevalent in Asian males. The head and neck region, especially the parotid glands and cervical lymph nodes, are most commonly affected. Diagnosis is based on clinicopathological features, while radiology findings are nonspecific. Although various treatment strategies have been proposed, there is a high recurrence rate. Combination therapy has been found to produce better results than monotherapy. We present a case of KD with huge parotid and cervical lymph node involvement that was treated with a combination of surgery and corticosteroids administered perioperatively.

Fulltext A concealed giant peritonsillolith masquerading as oropharyngeal tumor

Gan BC, Mohamad I, Lazim NM

Braz J Otorhinolaryngol, 2020 Dec;86 Suppl 1:72-74.

PMID: 29102399 DOI: 10.1016/j.bjorl.2017.09.002

Displaying publications 1 - 20 of 125 in total