Bioscientia Medicina - Journal of Biomedicine and Translational Research
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Beyond Serum Creatinine: Urinary KIM-1 as a Predictive Biomarker for Subclinical Acute Kidney Injury and Chronic Kidney Disease Progression: A Systematic Review and Meta-Analysis
Full text linkBackground: The global burden of chronic kidney disease (CKD) is escalating, requiring earlier and more precise diagnostic modalities. Traditional reliance on serum creatinine and glomerular filtration rate (GFR) creates a significant blind spot regarding structural tubular integrity. A dangerous diagnostic window known as subclinical acute kidney injury (AKI) exists when tubular damage progresses despite preserved filtration function. This study aims to systematically analyze the diagnostic accuracy of urinary kidney injury molecule-1 (uKIM-1) in detecting subclinical injury and quantify its predictive value for CKD progression in populations where serum creatinine fails to provide an early warning.
Methods: A systematic review and meta-analysis of five pivotal studies were conducted, encompassing experimental models of ischemia-reperfusion and human cohorts involving Autosomal Dominant Polycystic Kidney Disease (ADPKD), Diabetic Nephropathy, and Contrast-Induced AKI. Data were synthesized using random-effects models to calculate Standardized Mean Differences (SMD) and pooled Hazard Ratios (HR) to assess the prognostic value of uKIM-1 for long-term renal decline.
Results: The analysis demonstrated that uKIM-1 levels remained significantly elevated during apparent functional recovery where serum creatinine had returned to baseline. In experimental models, persistent uKIM-1 elevation correlated strongly with histological evidence of interstitial fibrosis (r > 0.70). Clinical cohorts revealed that elevated KIM-1 is a robust independent predictor of progression to ESRD, with hazard ratios ranging from 1.34 to 3.30. Pooled analysis showed a Risk Ratio of 2.45 (95% CI: 1.55 – 3.88; p < 0.0001).
Conclusion: Urinary KIM-1 serves as a sensitive and specific biomarker for subclinical tubular injury, identifying the at-risk"phenotype missed by creatinine. Its persistent elevation signifies maladaptive repair and predicts the transition from AKI to CKD, supporting its clinical integration for early risk stratification
Emergency Neuroanesthesia for Spontaneous Subdural Hematoma in a Pediatric Patient with Hemophilia A: A Protocol-Based Multidisciplinary Approach
Full text linkBackground: Spontaneous subdural hematoma (SDH) in pediatric patients with Hemophilia A is a rare, life-threatening emergency requiring a delicate balance between hemostatic correction and neuroprotective anesthesia. The mortality rate is high without immediate surgical decompression, yet the surgery itself poses catastrophic bleeding risks.
Case presentation: We report the case of an 11-year-old male (25 kg) with severe Hemophilia A (Factor VIII <1%) who presented with a three-day history of headache and vomiting, culminating in a sudden loss of consciousness (GCS E2V2M5). Neuroimaging revealed a massive left frontotemporoparietal SDH (8 mm thickness) with a 12 mm midline shift and non-communicating hydrocephalus. The patient had discontinued prophylaxis five months prior. Management involved a strict multidisciplinary protocol. Preoperatively, aggressive Factor VIII replacement was initiated to achieve 100% activity. Intraoperatively, a total intravenous anesthesia (TIVA) strategy utilizing propofol, fentanyl, and dexmedetomidine was employed to maintain cerebral perfusion pressure (CPP) while strictly controlling intracranial pressure (ICP). Tranexamic acid was used as an adjunct. The patient underwent successful craniotomy and hematoma evacuation with minimal blood loss. Postoperative care focused on serial factor VIII replacement and neurological monitoring, resulting in a favorable discharge outcome.
Conclusion: Successful management of spontaneous SDH in hemophilia requires a target-controlled approach to both hemostasis and hemodynamics. The integration of preoperative factor loading, neuroprotective anesthesia with dexmedetomidine, and postoperative vigilance is critical for survival
Functional Restoration of the Superior Auriculocephalic Sulcus in Cryptotia: A Case Report Validating the Twin Compression Theory via an Extended Sub-Galeal Advancement Flap
Full text linkBackground: Cryptotia, characterized by the invagination of the superior helix beneath the temporal skin, presents significant functional challenges regarding the retention of eyewear and protective masks. While prevalent in East Asian populations, data from the Indonesian archipelago is scarce. This study aims to document the functional and aesthetic outcomes of a modified surgical technique in a monozygotic twin, addressing the twin compression etiological hypothesis.
Case presentation: A 7-year-old male monozygotic twin presented with Type I Cryptotia of the right ear, with a superior helix-to-mastoid distance of 0 mm. The co-twin exhibited normal auricular morphology. The patient underwent a partial otoplasty combined with a modified posterior auricular advancement flap. The specific modification involved extended sub-galeal undermining to recruit maximum tissue elasticity. Cartilage reshaping was performed using non-absorbable horizontal mattress sutures. Postoperative evaluation at 3 months revealed a superior helix-mastoid distance increase to 12 mm and an auriculocephalic angle restoration to 30 degrees. Patient-Reported Outcome Measures via a validated Visual Analog Scale showed an improvement from 2 to 9 out of 10. No immediate recurrence or hypertrophic scarring was observed.
Conclusion: The extended sub-galeal advancement flap offers a promising solution for sulcus restoration, prioritizing vascularity and tissue recruitment over skin grafting. This case supports the intrauterine mechanical compression theory as a viable etiology for sporadic cryptotia. Short-term results are robust, though long-term surveillance is required to monitor cartilage memory
Severity Matters: The Differential Impact of Mild versus Severe Portal Hypertension on Post-Hepatectomy Liver Failure — A Systematic Review and Meta-Analysis
Full text linkBackground: Post-hepatectomy liver failure (PHLF) remains the principal cause of mortality following liver resection for malignancies, particularly in the context of hepatocellular carcinoma (HCC) and cirrhosis. While portal hypertension (PH) has traditionally been viewed as a monolithic contraindication to surgery, emerging evidence suggests that the risk it confers is heterogeneous. This study investigates the hypothesis that the risk of PHLF is strictly severity-dependent.
Methods: A systematic review and meta-analysis were conducted on observational studies involving patients undergoing hepatectomy for liver malignancies. Search strategies targeted studies stratifying outcomes by PH severity (mild vs. severe). Primary outcomes were the incidence of PHLF defined by ISGLS criteria. Data were synthesized using random-effects models to calculate pooled odds ratios (OR).
Results: Ten studies comprising 4,978 patients were included. The overall presence of PH significantly increased PHLF risk (Pooled OR 3.12; 95% CI: 2.15–4.53; p<0.001). However, stratification revealed a profound divergence: Severe PH (defined as HVPG ≥10 mmHg or clinically significant varices) was associated with a drastic risk escalation (OR 5.86; 95% CI: 2.19–15.65), whereas Mild PH showed a significantly lower risk profile (OR 2.45; 95% CI: 1.10–5.40). Sensitivity analyses confirmed that non-invasive surrogates for PH performed comparably to invasive hemodynamic monitoring in predicting failure.
Conclusion: The risk of PHLF is not binary but graded. Severe portal hypertension represents a prohibitive risk state characterized by hemodynamic intolerance to parenchymal reduction. Conversely, mild portal hypertension constitutes a distinct, manageable clinical entity where liver resection remains safe under optimized conditions. Surgical candidacy should be determined by severity grading rather than the mere presence of portal hypertension
Digital Panoramic Radiography for Forensic Dental Age Estimation: A Biostatistical Validation Demonstrating the Superiority of the Willems Method over the Cameriere Approach in a Pediatric Cohort (6–14 Years)
Full text linkBackground: Accurate dental age (DA) estimation is critical in pediatric dentistry, orthodontics, and forensic identification. Radiomorphological and radiometric techniques are widely utilized, yet their accuracy varies across diverse ethnic populations. This study aims to evaluate and compare the accuracy of the Willems (radiomorphological) and Cameriere (radiometric) methods against chronological age (CA) in a pediatric population in Padang, Indonesia.
Methods: A retrospective cross-sectional study was conducted using 168 digital panoramic radiographs of children (96 males, 72 females) aged 6 to 14 years. Dental maturation was assessed digitally utilizing CorelDraw X7. The Willems method evaluated the developmental stages of seven left mandibular teeth, while the Cameriere method measured open apices. Statistical analysis included paired t-tests, Pearson correlation coefficients, Mean Absolute Error (MAE), and Root Mean Square Error (RMSE) to rigorously assess accuracy.
Results: The mean CA of the cohort was 9.91 ± 0.28 years. The Cameriere method consistently underestimated DA across all age cohorts, yielding a mean DA of 8.63 ± 0.93 years (p < 0.05). Conversely, the Willems method demonstrated a mean DA of 10.73 ± 1.06 years, showing higher overall concordance with CA without statistically significant broad-scale deviations in the overarching comparative model (p < 0.05), despite minor stage-specific variances. Both methods exhibited a near-perfect positive correlation with CA (r > 0.98).
Conclusion: The Willems radiomorphological method significantly outperforms the radiometric Cameriere approach in this specific Southeast Asian pediatric demographic. The Cameriere method requires population-specific formulaic adaptation due to consistent physiological underestimation. 
Periosteal Stripping Induces Comparable Early Callus Formation but Late-Phase Regression: A Histomorphometric and Machine-Learning Analysis in a Rat Femoral Fracture Model
Full text linkBackground: The periosteum is critical for fracture healing, serving as a reservoir for osteoprogenitor cells and vascular supply. A clinical paradox exists where periosteal stripping is considered detrimental yet is historically associated with hypertrophic overgrowth. This study investigates the temporal paradox of periosteal stripping, testing the hypothesis that it induces a biphasic response characterized by early inflammatory compensation followed by late-phase regenerative failure.
Methods: Twenty-four male Sprague-Dawley rats were randomized into four groups (n=6/group): Intact Periosteum (PI) and Periosteal Stripping (PS), evaluated at 14 and 28 days post-fracture. Mid-diaphyseal femoral fractures were stabilized with 1.0 mm K-wires. Healing was quantified using a validated Modified Allen-Huo Histological Score (0-10) and Trainable Weka Segmentation (TWS) for tissue classification. Osteoclast activity was assessed via Tartrate-Resistant Acid Phosphatase (TRAP) staining.
Results: At Day 14, the PS group exhibited healing comparable to the PI group (Median Score: 8.0 [IQR 8.0–9.0] vs. 8.0 [IQR 7.0–8.0]; p = 0.176), driven by hypertrophic soft callus formation rather than true osteogenesis. However, by Day 28, the PS group demonstrated significant regression (Median Score: 3.5 [IQR 3.0–4.8]) compared to the PI group (Median Score: 8.0 [IQR 8.0–8.0]; p = 0.006). Quantitative histomorphometry revealed significantly higher osteoclast density in the PS-28 group (TRAP+ cells: 18.5 ± 2.1/field) compared to PI-28 (4.2 ± 1.1/field; p < 0.001), indicating active resorption of the unstable callus.
Conclusion: Periosteal stripping does not accelerate early healing but induces a volume-matched inflammatory callus that fails to consolidate. The significant late-phase regression underscores the vital role of the cambium layer in definitive remodeling. Surgical preservation of the periosteum is mandated to prevent atrophic non-union
Dual-Modality Salvage of Recurrent Pacemaker Extrusion in Severe Malnutrition: A Technique Using PTFE Mesh Encapsulation and Fasciocutaneous Flap Coverage
Full text linkBackground: Permanent pacemaker implantation in pediatric patients with severe malnutrition presents a unique surgical challenge due to the absence of a viable subcutaneous protective envelope. In this population, standard device fixation frequently results in recurrent wound dehiscence and device extrusion, often necessitating lead abandonment or epicardial placement. This study evaluates the efficacy of a dual-modality salvage technique integrating a Polytetrafluoroethylene (PTFE) mesh barrier with vascularized fasciocutaneous tissue coverage.
Case presentation: We present the case of a 3-year-old male with congenital complete atrioventricular block and severe acute malnutrition, defined by a Weight-for-Height Z-score of less than -3 SD. The clinical course was complicated by three consecutive implant failures over an 8-month period, including two thoracic and one abdominal extrusion, characterized by aseptic pressure necrosis. To salvage the cardiac hardware, a novel sealed-device technique was employed. The pulse generator was encapsulated in a non-absorbable PTFE mesh to minimize the coefficient of friction and placed in a sub-fascial plane. Simultaneously, a random-pattern fasciocutaneous rotation flap was harvested to provide robust, vascularized coverage. Biochemical analysis revealed severe hypoalbuminemia (2.1 g/dL) and anemia pre-operatively.
Conclusion: At the 12-month follow-up, the surgical site demonstrated complete physiological integrity with no recurrence of erosion, seroma, or infection. The combination of PTFE encapsulation to mitigate mechanical shearing forces and a fasciocutaneous flap to restore perfusion offers a durable salvage strategy for refractory device extrusion in cachectic pediatric patients
Concomitant Erythema Nodosum Leprosum and Bullous Dapsone Hypersensitivity Syndrome in Relapsed Multibacillary Leprosy: Pathophysiological Insights and Therapeutic Strategy
Full text linkBackground: Multibacillary leprosy management is frequently complicated by severe immunological reactions and adverse drug events. Erythema nodosum leprosum is an immune-complex-mediated complication, while dapsone hypersensitivity syndrome is an idiosyncratic, potentially life-threatening drug reaction. The concomitant presentation of these distinct entities, especially with bullous eruptions, creates a profound diagnostic and therapeutic dilemma.
Case presentation: A 42-year-old male with a history of relapsed borderline lepromatous leprosy and rheumatoid arthritis presented with exquisitely painful erythematous nodules, high-grade fever, and bullous eruptions exactly 72 hours after the re-initiation of multidrug therapy. Physical examination recorded a Visual Analog Scale pain score of 9. Expanded histopathological evaluation confirmed a dual pathology: extensive dermal neutrophilic infiltration characteristic of Erythema Nodosum Leprosum, occurring alongside pronounced subepidermal blistering and marked eosinophilic exocytosis indicative of a dapsone-induced bullous eruption. Standard multidrug therapy was immediately discontinued. A modified regimen comprising rifampicin, clarithromycin, and carefully titrated immunosuppressants (methylprednisolone and azathioprine) was initiated.
Conclusion: The substitution of dapsone with clarithromycin facilitated rapid clinical resolution of both the bullous eruptions and recurrent immune reactions. This case underscores the critical need for precise temporal tracking, individualized therapeutic modifications, and comprehensive histopathological evaluation in leprosy patients demonstrating complex, overlapping hypersensitivity syndromes
Pediatric Steroid High-Responder: Irreversible Visual Loss and Secondary Glaucoma Following Chronic Cutaneous-Ocular Dexamethasone Misuse
Full text linkBackground: Chronic misuse of potent topical corticosteroids can lead to irreversible visual loss, particularly in the pediatric population which exhibits a more aggressive trabecular meshwork remodeling response than adults. This case aims to delineate the silent progression of steroid-induced ocular hypertension in the absence of red-eye symptoms and emphasizes the critical pharmacokinetic risks of cutaneous-ocular absorption in children.
Case presentation: We report a catastrophic case of a 7-year-old male presenting with irreversible vision loss following six years of unsupervised, intermittent use of a combined Neomycin-Polymyxin B-Dexamethasone ointment for recurrent hordeolum. The cumulative exposure exceeded 125 mg of Dexamethasone. Examination revealed bilateral dense posterior subcapsular cataracts (PSC) and advanced glaucomatous optic neuropathy in left eye. Following sequential phacoaspiration, the left eye showed persistently elevated IOP (IOP elevated up to 59 mmHg) attributed to decompensated outflow facility. Management required Trabeculectomy with intraoperative 5-Fluorouracil (5 mg/0.1 mL). The high- responder phenotype in children involves rapid formation of Cross-Linked Actin Networks (CLANs) and MYOC gene upregulation. We discuss the double-hit mechanism where cataract extraction washes out hyposecretory factors, unmasking total trabecular blockage. The choice of 5-Fluorouracil over Mitomycin C is defended based on the safety profile regarding hypotony maculopathy in pediatric myopic eyes.
Conclusion: Dexamethasone carries a high risk of transcutaneous-ocular absorption in pediatric eye and eyelids. Regulatory reform reclassifying antibiotic-steroid combinations as non-repeatable prescriptions is imperative to prevent such preventable blindness
From Nasal Vestibulitis to Maxillofacial Abscess: Reconstruction of Extensive MRSA-Induced Defects in a Diabetic Patient
Full text linkBackground: Nasal vestibulitis is frequently regarded as a benign localized infection. However, in immunocompromised hosts, specifically those with uncontrolled diabetes mellitus, it can rapidly escalate into a life-threatening maxillofacial abscess involving the danger triangle of the face. The synergistic destructive potential of Methicillin-resistant Staphylococcus aureus (MRSA) and hyperglycemia poses a formidable challenge for reconstructive surgery due to extensive tissue necrosis and compromised microvasculature. This study evaluates the efficacy of a dual-flap approach—combining Rotation and V-Y Advancement flaps—for restoring extensive midfacial defects.
Case presentation: A 51-year-old male with uncontrolled Type 2 Diabetes presented with a massive, ruptured maxillofacial abscess originating from neglected nasal vestibulitis exacerbated by rhinotillexomania. The infection resulted in extensive necrosis spanning the nasal dorsum, infraorbital regions, and forehead. Microbiological analysis confirmed MRSA. Laboratory markers indicated severe sepsis with leukocytosis of 34,840 /mm³ and hyperglycemia of 328 mg/dL. Following acute stabilization and surgical debridement, the patient sustained a complex soft-tissue defect crossing multiple aesthetic subunits. A staged reconstruction was performed three weeks post-debridement. A V-Y advancement flap was utilized for the infraorbital and medial cheek defects to minimize ectropion risk, while a rotation flap was designed for the glabella and nasal dorsum to recruit forehead tissue.
Conclusion: The combination of V-Y advancement and rotation flaps provides a robust, anatomically adaptable, and aesthetically superior solution for complex midfacial defects where skin laxity is compromised. This approach allows for tension-free closure in the aesthetic subunits of the face, even in patients with compromised perfusion due to diabetes. Early recognition of MRSA in diabetic vestibulitis is critical to preventing catastrophic tissue loss