MyMedR

Reconstruction of the Austronesian Diaspora in the Era of Genomics

Chambers GK, Edinur HA

Hum Biol, 2021 10;92(4):247-263.

PMID: 34665569 DOI: 10.13110/humanbiology.92.4.04

The Austronesian Diaspora is a 5,000-year account of how a small group of Taiwanese farmers expanded to occupy territories reaching halfway around the world. Reconstructing their detailed history has spawned many academic contests across many disciplines. An outline orthodox version has eventually emerged but still leaves many unanswered questions. The remarkable power of whole-genome technology has now been applied to people across the entire region. This review gives an account of this era of genetic investigation and discusses its many achievements, including revelation in detail of many unexpected patterns of population movement and the significance of this information for medical genetics.

Fulltext Non-recurrent laryngeal nerve in thyroid surgery

Hisham AN, Sarojah A, Alvin A

Med J Malaysia, 2001 Dec;56(4):500-2.

PMID: 12014772

A case of non-recurrent laryngeal nerve is reported. The non-recurrent laryngeal nerve was found on the right side and was not associated with any vascular abnormalities. The anatomy and surgical implication of this rare condition is discussed

Fulltext Assessment of students’ perceptions towards e-learning management system (e-lms) in a Malaysian pharmacy school: a descriptive study

Mohamed Azmi H., Zeehan S.I., Fahad S., Maryam F., Hisham A.

Malaysian Journal of Public Health Medicine, 2012;12(1):14-20.

MyJurnal

The study aims to evaluate students’ perceptions towards e-Learning Management System (e-LMS) in pharmacy education. A cross-sectional survey was conducted among all undergraduates enrolled at School of Pharmaceutical Sciences, Universiti Sains Malaysia. A pre-validated questionnaire consisting of two domains (demographic characteristics and students’ perception regarding the use of e-LMS) was used for data collection. Descriptive statistics were used to describe the demographic characteristics of the study respondents. Chi Square test was used to measure association between the study variables. All analysis was performed by using Predictive Analytical Software (PASW) v. 18. A total of 315 students completed the survey questionnaire with a response rate of 57.6%. Majority of the students (61.0%) accessed e-LMS to acquire lecture notes for their studies, followed by 53.3% have used e-LMS for the preparation of the assignments. Seventy eight percent of the respondents agreed that e-LMS is very useful and felt that e-LMS is making their studies easier. However, 50% of students claimed that poor network connection at the campus is a major barrier in accessing e-LMS. Moreover, 48% of the respondents disagreed that e-LMS should be taken into account as an assessment criterion for students’ grading. Students are found to be frequently engaged in using e-LMS and believed that online based learning is
enhancing their academic performances. Nevertheless, students still prefer hybrid teaching methodologies than choosing traditional system or e-learning as an alone entity.

Fulltext Recent Developments in Transplantation and Transfusion Medicine

Edinur HA, Chambers GK, Dunn PP

Ann. Transplant., 2015;20:424-9.

PMID: 26218888 DOI: 10.12659/AOT.894003

Transplantation and transfusion are related and clinically important areas of multidisciplinary expertise, including pre-operative treatment, donor recruitment, tissue matching, and post-operative care. We have seen significant developments in these areas, especially in the late 20th and early 21st century. This paper reviews the latest advances in modern transplantation and transfusion medicine, including several new genetic markers (e.g., major histocompatibility complex class I chain-related gene A, killer cell immunoglobulin-like receptor, and human platelet antigens) for donor and recipient matching, genotyping platforms (e.g., next-generation sequencer and Luminex technology), donor recruitment strategies, and several clinical applications in which genotyping has advantages over agglutination tests (e.g., genotyping of weakly expressed antigens and determination of blood groups and human leukocyte antigen types in multi-transfused patients). We also highlight the roles of population studies and international collaborations in moving towards more efficient donor recruitment strategies.

Fulltext Genetic barriers in transplantation medicine

Edinur HA, Manaf SM, Che Mat NF

World J Transplant, 2016 Sep 24;6(3):532-41.

PMID: 27683631 DOI: 10.5500/wjt.v6.i3.532

The successful of transplantation is determined by the shared human leukocyte antigens (HLAs) and ABO blood group antigens between donor and recipient. In recent years, killer cell receptor [i.e., killer cell immunoglobulin-like receptor (KIR)] and major histocompatibility complex (MHC) class I chain-related gene molecule (i.e., MICA) were also reported as important determinants of transplant compatibility. At present, several different genotyping techniques (e.g., sequence specific primer and sequence based typing) can be used to characterize blood group, HLA, MICA and KIR and loci. These molecular techniques have several advantages because they do not depend on the availability of anti-sera, cellular expression and have greater specificity and accuracy compared with the antibody-antigen based typing. Nonetheless, these molecular techniques have limited capability to capture increasing number of markers which have been demonstrated to determine donor and recipient compatibility. It is now possible to genotype multiple markers and to the extent of a complete sequencing of the human genome using next generation sequencer (NGS). This high throughput genotyping platform has been tested for HLA, and it is expected that NGS will be used to simultaneously genotype a large number of clinically relevant transplantation genes in near future. This is not far from reality due to the bioinformatics support given by the immunogenetics community and the rigorous improvement in NGS methodology. In addition, new developments in immune tolerance based therapy, donor recruitment strategies and bioengineering are expected to provide significant advances in the field of transplantation medicine.

Editorial: Biofilms: multi-species community interactions

Joshi SJ, Ray RR, Erlich GD, Edinur HA

Front Microbiol, 2023;14:1191406.

PMID: 37303794 DOI: 10.3389/fmicb.2023.1191406

Adrenal tuberculosis: the atypical presentations of eggshell-like calcifications

Imisairi AH, Hisham AN

ANZ J Surg, 2009 Jun;79(6):488-9.

PMID: 19566876 DOI: 10.1111/j.1445-2197.2009.04953.x

External laryngeal nerve in thyroid surgery: recognition and surgical implications

Aina EN, Hisham AN

ANZ J Surg, 2001 Apr;71(4):212-4.

PMID: 11355727

Injury to the external laryngeal branch of the superior laryngeal nerve during thyroid surgery is not uncommon. Most surgeons tend to avoid rather than expose and identify the external laryngeal nerve (ELN). The aim of the present study was to analyse the frequency and types of ELN crossing the avascular space in relationship to the structures to the upper pole of the thyroid and related thyroid pathology.

External laryngeal nerve in thyroid surgery: is the nerve stimulator necessary?

Aina EN, Hisham AN

Eur J Surg, 2001 Sep;167(9):662-5.

PMID: 11759734 DOI: 10.1080/11024150152619282

OBJECTIVE: To find out the incidence and type of external laryngeal nerves during operations on the thyroid, and to assess the role of a nerve stimulator in detecting them.
DESIGN: Prospective, non-randomised study.
SETTING: Teaching hospital, Malaysia.
SUBJECTS: 317 patients who had 447 dissections between early January 1998 and late November 1999.
MAIN OUTCOME MEASURES:
Number and type of nerves crossing the cricothyroid space, and the usefulness of the nerve stimulator in finding them.
RESULTS: The nerve stimulator was used in 206/447 dissections (46%). 392 external laryngeal nerves were seen (88%), of which 196/206 (95%) were detected with the stimulator. However, without the stimulator 196 nerves were detected out of 241 dissections (81%). The stimulator detected 47 (23%) Type I nerves (nerve > 1 cm from the upper edge of superior pole); 86 (42%) Type IIa nerves (nerve < 1 cm from the upper edge of superior pole); and 63 (31%) Type IIb nerves (nerve below upper edge of superior pole). 10 nerves were not detected. When the stimulator was not used the corresponding figures were 32 (13%), 113 (47%), and 51 (21%), and 45 nerves were not seen. If the nerve cannot be found we recommend dissection of capsule close to the medial border of the upper pole of the thyroid to avoid injury to the nerve.
CONCLUSION: Although the use of the nerve stimulator seems desirable, it confers no added advantage in finding the nerve. In the event of uncertainty about whether a structure is the nerve, the stimulator may help to confirm it. However, exposure of the cricothyroid space is most important for good exposure in searching for the external laryngeal nerve.

Zuckerkandl's tubercle of the thyroid gland in association with pressure symptoms: a coincidence or consequence?

Hisham AN, Aina EN

Aust N Z J Surg, 2000 Apr;70(4):251-3.

PMID: 10779054

BACKGROUND: The Zuckerkandl's tubercle (ZT) of the thyroid gland is a well-described anatomical landmark, but few studies have clearly defined its association with pressure symptoms.

METHODS: Sixty-six consecutive patients who had primary thyroid surgery were prospectively included in the present study between late January and early August 1998.

RESULTS: A total of 96 capsular dissections were performed at thyroid surgery. Grades two and three ZT were recognized in 77 (80.2%) dissections. In general 49 (63.6%) of them were associated with significant pressure symptoms. In 43 (87.8%) of the dissections with pressure symptoms, grade 3 ZT was observed (mean weight of goitre: 154.8 g). Interestingly in this group, 16 (37.2%) patients with pressure symptoms had a goitre that was < 100 g and in one patient it was only 21 g.

CONCLUSIONS: The pressure symptom of the thyroid gland does not always appear to be due to the large size of the goitre. In a relatively small-size goitre the ZT may cause significant pressure symptoms. Observations in the present study supported a strong association of enlarged ZT with pressure symptoms. We believe this is unlikely to be simply a coincidence but rather a consequence of the enlarged tubercle. Nonetheless a prospective randomized study is called for to allow meaningful and objective evidence to be drawn.

Fulltext Large adrenocortical carcinoma extending into the inferior vena cava and right atrium

Hisham AN, Sarojah A, Zanariah H

Asian J Surg, 2003 Jan;26(1):40-2.

PMID: 12527494

A case of large adrenocortical carcinoma extending into the inferior vena cava and right atrium is reported. Computed tomography showed a large mass displacing the left kidney inferiorly with an intravascular tumour thrombus extending into the inferior vena cava and right atrium. Radical surgery under hypothermia and cardiopulmonary bypass was performed and the tumour mass, together with the tumour thrombus, was successfully removed. The presence of intravascular tumour extension alone should not be a contraindication to radical surgical therapy, as it is the best hope for prolonged survival.

Fulltext Core needle biopsy of palpable breast lump: the influence of needle size

Wong TE, Hisham AN

Med J Malaysia, 2003 Aug;58(3):399-404.

PMID: 14750380

The diagnostic value of core needle biopsy is increasingly being preferred because of its better characterization of benign and malignant lesions and lower frequency of insufficient samples. The aim of this study was to determine the diagnostic accuracy and complication rates with 2 different gauges of core biopsy needle in the preoperative diagnosis of palpable breast lumps. A total of 150 consecutive core biopsies were included in this prospective non-randomised study of palpable breast lump from May 2000 to May 2001. The tissue diagnosis made from the core biopsy specimen was compared with the final histopathology reports from the excised specimen. However, if the lump is not excised, a presumptive diagnosis of benign lesion was made only after at least 6 months follow up with no change in the breast lump. The data were analysed for sensitivity, specificity, predictive values, diagnostic accuracy and complications. The results from the 2 different sizes of core needle biopsies were compared accordingly and a statistical analysis was performed using Chi-squared test. Ninety-six core specimens were acquired with 14 G needle while the other 54 with 16 G needle. There was no significant statistical difference between the accuracy of both needle sizes. However, 4 complications occurred with the larger size 14 G needle while none with the 16 G needle, but this was not statistically significant. In conclusion the size 16 G core biopsy needle provided an accurate diagnostic reliability that is comparable to the larger size 14 G needle in the preoperative diagnosis of palpable breast lump.
Keywords: core needle biopsy, needle size, palpable breaast lump, Hospital Kuala Lumpur, Kuala Lumpur, Malaysia

Fulltext Elevated expression of CD151 gene in estrogen receptor and progesterone receptor positive breast carcinoma

Ivyna Bong, P.N., Zubaidah, Z., Rohaizak, M., Naqiyah, I., Noor Hisham, A., Sharifah, N.A., et al.

Medicine & Health, 2011;6(1):33-40.

MyJurnal

The tetraspanin gene, CD151 is involved in various tumour cell progression and metastasis. Its expression is increased in high grade, estrogen receptor negative and c-erbB-2 positive breast cancer. However, the biological function and expression phenotype among different tumour status, estrogen receptor (ER) status, progesterone receptor (PR) status and c-erbB-2 expression in multi-ethnic Malaysian breast cancer patients has not been well investigated. We used quantitative real-time reverse transcriptase polymerase chain reaction (qRT-PCR) to measure the CD151 gene expression in 45 breast cancers. Our preliminary results revealed that CD151 expression is significantly higher in ER positive and PR positive breast cancers at 95% and 99% confidence intervals, respectively. In contrast, there is no significant correlation between CD151 expression and tumour grades or c-erbB-2 status at 95% confidence interval level. Our preliminary findings suggested that CD151 may be involved in the estrogen responsive pathways. CD151 could be a potential prognostic marker and therapeutic target in the treatment of estrogen dependent breast cancer patients.

Letter to the Editor Regarding Article, "Assembling a Functional Clitoris and Vulva from a Pseudo-Penis: A Surgical Technique for an Adult Woman with Congenital Adrenal Hyperplasia"

Hisham A, Mat Zain MA

J Pediatr Adolesc Gynecol, 2017 08;30(4):513.

PMID: 28347813 DOI: 10.1016/j.jpag.2017.02.008

Fulltext Prebiopsy localisation of impalpable breast lesions

Hisham AN, Harjit K, Fatimah O, Yun SI

Med J Malaysia, 2004 Aug;59(3):402-5.

PMID: 15727388

Prebiopsy localization of impalpable breast lesions (IBL) assures removal of suspicious mammographically detected lesions. Specimen radiograph of the excised specimen is mandatory to confirm complete excision. The aim of this study was to audit our series of percutaneous hookwire localization and to determine the positive biopsy rate of the mammographically detected impalpable breast lesion in our center. Thirty-eight patients with suspicious IBL underwent excision biopsy under mammographic localization in our unit from late February 1998 to May 2003. The excised specimen is immobilized and compressed within the Transpec device. This device incorporates a reference grid visible in the specimen radiograph. Hence, the target lesion marked in the reference grid of the specimen radiograph will allow precise examination and exact localization of the suspicious lesion by the pathologist. The positive biopsy rate for malignant lesion was 26.3%, the majority fall in the range of 40-59 age group. Thirty-two (84.2%) of the patients had clustered micro-calcifications, 4 (10.5%) had impalpable mass lesions and in 2 (5.3%) spiculated lesions were seen on the preoperative mammogram. Mammographic feature of clustered micro-calcification accounts for all the malignant lesions in our series. Utilization of Transpec device has shown to be practical, reliable and cost effective in the management of IBL. Nonetheless, it should be emphasized that optimal specimen radiography and pathological correlation requires close cooperation between radiologist, surgeon and pathologist.

Post-thyroidectomy sore throat following endotracheal intubation

Hisham AN, Roshilla H, Amri N, Aina EN

ANZ J Surg, 2001 Nov;71(11):669-71.

PMID: 11736830 DOI: 10.1046/j.1445-1433.2001.02230.x

Background: Sore throat is not an uncommon complaint following general anaesthesia (GA) with endotracheal intubation. It has been a source of considerable discomfort particularly in those patients who had thyroid surgery. Driven by the increased number of patients with post-intubation sore throat following thyroid surgery, the aim of the present study was to evaluate the contributing factors of sore throat in patients who had thyroid surgery under general anaesthesia.
Methods: A total of 57 consecutive patients who had thyroid surgery from November 1998 to April 1999 was included in this prospective study. Factors such as intubation time, number of intubation attempts, size and type of endotracheal tube (ETT) used, gender and age were recorded. The nature and extent of the surgical procedures were also studied. Postoperative symptoms were assessed by questionnaire on the day after surgery and the different parameters were compared and analysed.
Results: The incidence of post-intubation sore throat following thyroid surgery was documented in 39 (68.4%) patients. Twenty-seven (47.4%) patients had a mild complaint of sore throat, which resolved after the third day. The data from the present study show that the size of ETT and extent of surgical procedure were significant contributing factors affecting the postoperative recovery.
Conclusion: The outcome of the present study demonstrated a substantial increased incidence of sore throat after thyroid surgery under GA. Postoperative sore throat following thyroid surgery under GA may be caused by multiple contributing factors. Nonetheless effort and care should be taken during endotracheal intubation and surgery to reduce this unpleasant complaint arising mainly from pharyngeal irritation or trauma.

Fulltext Recognition and management of hungry bone syndrome--a case report

Hisham AN, Aina EN, Zanariah H

Med J Malaysia, 2000 Mar;55(1):132-4.

PMID: 11072498

Hungry bone syndrome (HBS) following successful parathyroid surgery is a well described phenomenon. However, few studies have clearly addressed this syndrome or looked at the outcome of perioperative management. We report a case of HBS following successful parathyroid surgery. The perioperative management is discussed and literature pertaining to this interesting case is reviewed.

Fulltext Fracture of the penis

Kamil N, Hisham AN, Abdullah M, Khairullah A

Med J Malaysia, 1993 Sep;48(3):373-6.

PMID: 8183157

Fracture of the penis is not an uncommon urological emergency. Six patients with this injury, treated at the Institute of Urology, General Hospital, Kuala Lumpur, since 1988, were reviewed. Their ages ranged from 21 to 30 years old (mean 25). Four cases were self-inflicted by abnormal bending and 2 cases occurred during sexual intercourse. A sudden "cracking sound", violent pain, rapid flaccidity and deformity of the penis were documented. Duration of injury at presentation ranged from 12 to 90 hours (mean 35 hours). Primary repair of the tunica albuginea with absorbable suture was performed in all cases. The results of surgery was excellent, with restoration of normal function in 4 patients (2 patients defaulted follow-up). We advocate immediate surgical repair for this injury.

Fulltext Polycystic liver disease treated by fenestration and segmental liver resection

Haron A, Hisham AN, Samad SA

Med J Malaysia, 1994 Mar;49(1):86-9.

PMID: 8057997

A case of symptomatic polycystic liver disease treated by fenestration and segmental liver resection is reported. The intraoperative use of ultrasound to define the plane of liver resection is emphasised. No significant post-operative complication was encountered. The clinical presentation, management and treatment are discussed.

Huge adrenal haemangioma

Hisham AN, Samad SA, Sharifah NA

Australas Radiol, 1998 Aug;42(3):250-1.

PMID: 9727258

Adrenal tumours are either functioning or non-functioning. Non-functioning adrenal tumours are generally asymptomatic and usually of enormous proportions at the time of presentation. A case is presented here of a patient with a huge right adrenal haemangioma which was successfully treated surgically. This unusual tumour was 25 cm in diameter, was well encapsulated and weighed 4 kg. The literature pertaining to this interesting case is reviewed.

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