1.Herbal Textual Research on Quisqualis Fructus in Famous Classical Formulas
Xiuping WEN ; Shiying CHEN ; Ying TAN ; Guanwen ZHENG ; Huilong XU ; Wen XU ; Chengzi YANG ; Zehao HUANG ; Yu LIN ; Zhilai ZHAN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(6):225-237
This article systematically analyzed the historical evolution of the origin, scientific name, producing area, quality evaluation, harvesting and processing, and other aspects of Quisqualis Fructus by consulting the ancient materia medica, medical books, prescription books, local literature and combining with the modern literature and standards, summarized and explored the development rules of its medicinal properties and efficacy along with their underlying causes, in order to provide support for the development and utilization of famous classical formulas containing this herb. According to the textual research, Shijunzi was first recorded as Liuqiuzi in Nanfang Caomuzhuang of the Jin dynasty, and the name of Shijunzi was first used in Kaibao Bencao of the Song dynasty, which has been consistently used throughout subsequent dynasties, and there were also aliases such as Junziren, Sijunzi, and Dujilizi. The mainstream source of Quisqualis Fructus used in the past dynasties has been the dried mature fruits of Quisqualis indica, a plant belonging to the family Combretaceae. In modern times, its variety Q. indica var. villosa has also been recorded as the medicinal material of Quisqualis Fructus. In 2007, the Flora of China(English edition) designated Q. indica var. villosa as a synonym of Q. indica. Today, the accepted name of Shijunzi is updated to Combretum indicum. According to ancient herbal records, the producing areas of Quisqualis Fructus were Guangdong, Hong Kong, Macao, Guangxi, Hainan, Sichuan and Fujian, and then gradually expanded to Yunnan, Taiwan, Jiangxi and Guizhou. Since the Song dynasty, two major production regions have gradually emerged in Sichuan, Chongqing and Fujian. Currently, it is primarily cultivated in Chongqing, Guangxi and other areas, with Chongqing yielding the highest output. Since modern times, superior quality has been defined by large size, a purple-black surface, plump grains, and a yellowish-white kernel. According to ancient herbal records, the harvesting period of Quisqualis Fructus was the July and August of the lunar calendar, mostly used raw after shelling or with the shell intact, it underwent processing methods such as cleaning, slicing, mixing, steaming, roasting, stewing, and frying. Currently, the harvesting period is autumn, followed by sun-drying or low-heat drying, with processing methods including cleaning, stir-frying, and stewing. In ancient and modern literature, the records of the properties, functions and indications of Quisqualis Fructus are basically the same, that is, sweet in taste, warm in nature, predominantly non-toxic, belonging to the spleen and stomach meridians. It possesses effects of insecticide, decontamination and invigorating spleen for ascariasis, enterobiasis, abdominal pain due to worm accumulation and infantile malnutrition.The contraindications for use primarily include avoiding consumption by individuals without parasitic infestations, limiting use for those with spleen-stomach deficiency-cold, refraining from drinking hot tea during medication, and avoiding excessive intake. Based on the textual research, it is suggested that the dried mature fruits of Q. indica should be used as the medicinal material for the development of famous classical formulas containing Quisqualis Fructus. Processing methods may be chosen according to prescription requirements, and the raw products is recommended for medicinal use if not specified.
2.Compact Fundus Imaging System Using Shack-Hartmann Wavefront Sensing for High-speed Auto-focus
Zhe-Kai LIN ; Long CHEN ; Geng-Yong ZHENG ; Jin-Tian HUANG ; Jia-Xin DONG ; Shang-Pan YANG ; Wen-Zheng DING ; Ding-An HAN ; Xue-Hua WANG ; Ya-Guang ZENG
Progress in Biochemistry and Biophysics 2026;53(4):1076-1086
ObjectiveThe widespread adoption of portable fundus cameras for primary care and community screening is hindered by limitations in current autofocus(AF) technologies. Image-based methods relying on sharpness evaluation require iterative searches, resulting in slow convergence, while projection-based techniques are susceptible to optical artifacts and calibration errors. To address these challenges, this study introduces a novel AF system based on direct wavefront sensing, designed to deliver simultaneous high speed, high precision, and operational robustness within the compact form factor essential for portable ophthalmic devices. MethodsOur approach fundamentally reimagines the AF process by directly measuring the ocular wavefront aberration. We developed a custom portable fundus camera integrating a miniaturized Shack-Hartmann wavefront sensor (SHWS) into the optical path. An 850 nm laser diode projects a point source onto the retina via oblique illumination to minimize corneal reflections. Light scattered from this spot carries the eye’s refractive error through the imaging optics and is directed to the SHWS, positioned at a plane optically conjugate to the primary color CMOS imaging sensor. A microlens array within the SHWS samples the incident wavefront, generating a pattern of focal spots on a CCD. Real-time centroid analysis of these spots provides a map of local wavefront slopes. These measurements are processed through a singular value decomposition (SVD) algorithm to fit a Zernike polynomial basis set, enabling real-time reconstruction of the wavefront phase. The defocus component (S) is extracted from the second-order Zernike coefficients, providing a direct, quantitative measure of the refractive error in diopters. This value serves as a precise error signal in a closed-loop control system, which commands a voice-coil actuated focusing lens to its null position in a single, deterministic step, eliminating the need for iterative search algorithms. ResultsComprehensive evaluation demonstrated the system’s high performance. Testing on a calibrated model eye (OEMI-7) established a highly linear relationship between the computed defocus S and the focusing lens position across a ±20 Diopter (D) compensation range, achievable within a 5 mm mechanical travel. The system achieved a focusing precision of 0.08 D, corresponding to an 18-fold improvement over a conventional projection spot-size method tested under identical conditions. The total focus acquisition time, encompassing wavefront measurement, computation, and lens actuation, averaged under 0.5 s. Clinical validation with 25 human volunteers (50 eyes, refractive range -15 D to +10 D) confirmed practical efficacy. The wavefront-sensing AF succeeded in 92% of attempts with a mean time of 0.5 s, substantially outperforming a projection-based benchmark which achieved only a 32% success rate with an average time of 4.25 s. The system provided instantaneous directional guidance and maintained stability during minor ocular movements. Objective assessment of image quality, via amplitude contrast of retinal vasculature, showed consistent and significant enhancement following AF correction across the entire tested diopter range. ConclusionThis work successfully implements and validates a direct wavefront-sensing autofocus paradigm for portable fundus cameras. By directly quantifying and compensating for the optical defocus aberration, this method bypasses the fundamental limitations of image-processing and projection-based techniques, enabling rapid, precise, and deterministic diopter compensation. The developed system delivers an exceptional combination of a wide operational range (±20 D), high accuracy (0.08 D), fast convergence (0.5 s), and a compact physical footprint. This technology provides a practical and high-performance focusing solution capable of enhancing the reliability, throughput, and diagnostic utility of portable retinal imaging in large-scale screening applications. Future efforts will be directed towards system cost optimization and performance adaptation for diverse ocular conditions.
3.Large "Growing" Adrenal Mass with an Unexpected Histology
Ling Hui Kiu ; Ee Wen Loh ; Pei Lin Chan ; Florence Hui Sieng Tan
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):24-
Introduction:
Large, rapidly enlarging adrenal masses typically mandate
surgical intervention given the high probability of adrenocortical carcinoma (ACC). However, benign processes can mimic these aggressive growth kinetics, creating a
diagnostic challenge for clinicians.
Case:
A 74-year-old male with hypertension, atrial fibrillation on
rivaroxaban, and prostate cancer was referred for evaluation
of a right adrenal incidentaloma detected on computed
tomography imaging performed for prostate cancer
staging. The well-defined mass measured 8.9 × 7.8 × 7.5 cm
(AP × W × CC) with areas of calcification. Mean attenuation
was +40 Hounsfield Unit, with no significant washout.
Biochemical evaluation confirmed a non-functioning
lesion (24-hour urine metanephrines 756 mcg/24 hours
[N 246–753 mcg/24 hours]; serum cortisol 62 nmol/L post
overnight dexamethasone suppression test). The patient was otherwise asymptomatic and declined surgical intervention. Repeat imaging 4 months later demonstrated
interval enlargement of the mass to 9.8 × 8.8 × 10.7 cm. Due
to this rapid growth, which was highly concerning for ACC,
the patient underwent laparoscopic right adrenalectomy.
Histopathological examination unexpectedly revealed
an adrenal hematoma without evidence of an underlying
tumor or malignancy.
This case illustrates the difficulty in differentiating
aggressive cortical tumors from atypical hemorrhagic
events. Larger series on adrenal hemorrhage reported
trauma and procedural complications as the leading causes,
with a median size of 3–4 cm. Idiopathic large adrenal
hematomas presenting as rapidly expanding “pseudotumors” are exceptionally rare, with fewer than 20 cases
reported in which surgical resection was performed due to
high preoperative suspicion of malignancy. Additionally,
adrenal hemorrhage attributed to anticoagulant therapy
often occurs bilaterally. Unilateral lesion, especially when
large, can pose a diagnostic challenge as highlighted in
this case.
Conclusion
In patients on anticoagulation, rapid interval growth of
an adrenal mass does not always equate to malignancy.
Recognizing this mimicry in the era of widespread Direct
Oral Anticoagulant use is essential for refining treatment
decision regarding surgical intervention, as most cases exhibited a self-limiting process with spontaneous resolution.
4.Hidden Burden of Diabetes Risk Among Healthcare Workers in a Tertiary Hospital
Hui Soon Lim ; Ee Wen Loh ; Sing Yee Sim ; Pei Lin Chan ; Florence Hui Sieng Tan
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):40-
Introduction:
The increasing prevalence of diabetes represents a
significant global health challenge. Modifiable risk factors,
including physical inactivity, unhealthy dietary habits, and obesity contribute substantially to this rising burden.
In conjunction with the 2025 World Diabetes Day (WDD)
campaign focusing on “diabetes and the workplace,” we
assessed diabetes risk among healthcare workers in our
hospital using the Modified Asian Finnish Diabetes Risk
Score (ModAsian FINDRISC).
Methodology:
Healthcare workers from various departments were invited
to participate in the hospital WDD celebration. A total of
286 attendees underwent anthropometric measurements
and completed the ModAsian FINDSRIC questionnaire.
Descriptive statistics were used to summarize the
prevalence of risk factors and overall diabetes risk.
Results:
The participants included doctors, nurses, allied healthcare
professionals, as well as hospital support and administrative
staff. The majority of participants (74.8%) were aged below
45 years. 39.2% were overweight while 30.8% were obese.
One-third (37.4%) had increased waist circumference
(WC) (≥90 cm for men, ≥80 cm for women). Additionally,
20% of respondents reported being on antihypertensive
medication, and 23.8% had previously recorded high blood
glucose. A family history of diabetes mellitus (DM) was
reported by 62.6% of respondents. Additionally, about onethird were sedentary with less than 30 minutes of daily
exercise or physical activity, another one-third did not
consume fruits or vegetables on a daily basis. The median
ModAsian FINDRISC score was 8, with approximately
30% of them classified as having moderate to very high
risk of developing DM (moderate: 17.5%; high: 10.8%; very
high: 2.8%).
Conclusion
These results revealed high metabolic risk in healthcare
workers and highlight the need for targeted workplace
health promotion strategies to reduce the risk of developing
diabetes.
Tertiary Care Centers
;
Health Personnel
;
Diabetes Mellitus
5.Individualizing Therapy With Repaglinide: A Single-Centre Experience
Ioanna Ting Yung Sim ; Florence Hui Sieng Tan ; Pei Lin Chan ; Ee Wen Loh
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):55-
Introduction:
Repaglinide, a meglitinide analogue, has a rapid onset
and short duration of action. It offers prandial glucose
control while reducing hypoglycemia risk compared to
sulfonylureas. We describe its use in our special cohorts
of diabetic patients where repaglinide was prescribed to
reduce hypoglycemia in vulnerable patients or to optimize
glycemic control through pharmacotherapy intensification
or deintensification.
Cases:
Cohort A comprised 12 elderly patients with multiple
comorbidities (mean age: 70.3 years; mean DM duration:
18.3 years) characterized by high glucose variability and
problematic hypoglycemia. In seven patients, low-dose
gliclazide was replaced with repaglinide with reduction
in hypoglycemic episodes. One patient on low-dose premixed insulin was successfully switched to preprandial
repaglinide. Two patients on basal insulin were able to
reduce their insulin requirements and stabilize their glucose
levels. A younger patient with autonomic dysfunction had
hypoglycemia while on insulin glulisine, while its omission
led to severe hyperglycemia. Substituting glulisine with
repaglinide resolved the glucose variability. Repaglinide
effectively reduced hypoglycemic episodes while maintaining glycemic stability, with a mean hemoglobin A1c
(HbA1c) reduction of 0.36% over 3–6 months.
Cohort B consisted of six younger patients (mean age: 35.3
years) with focus on optimizing HbA1c and improving
treatment adherence. Two patients on basal-bolus regimes
success-fully transitioned off bolus insulin to repaglinide,
significantly improving compliance. One patient on
basal insulin was successfully transitioned to an all-oral
regimen. Three patients on existing oral hypoglycemic
agents were started on repaglinide to close the glycemic
gap. Cohort B achieved a robust mean HbA1c reduction of
2.1% within 3–6 months.
Conclusion
Repaglinide remains an important armamentarium in
personalized diabetes management. Its pharmacokinetics
and flexible dosing allow intensification of glycemic
control while minimizing the risk of hypoglycemia. It also
offers a viable strategy for selected patients struggling
with complex insulin regime.
Repaglinide
6.The first record of Anopheles messeae (Diptera: Culicidae) parasitized by water mites in China
Xue-ru CHEN ; Wen-zhen YAO ; Yu-hao LI ; Gui-chang LI ; Tao MENG ; Qun-ling FENG ; Xin-hui LIU ; Li-hong QIAO ; Xiang-ting WU ; Xue-feng ZHANG ; Cheng-lin LI ; Xue-cheng DONG ; Da-wei WANG ; Xiao-yan SI ; Yu-hong GUO
Acta Parasitologica et Medica Entomologica Sinica 2026;33(1):53-57
Objective This study reports on the obligatory parasitism of water mites Arrenurus sp. on Anopheles messeae at the Manzhouli Port, Inner Mongolia, China. Methods Duing July 2024, a survey on the mosquito diversity was conducted at the Manzhouli Port. Captured mosquitoes and their ectoparasites were identified to species level. Results A total of 1840 adult mosquitoes were collected, representing species from three genera: Culex(Cx. modestus, Cx. pipiens pallens), Aedes(Ae. dorsalis, Ae. flavidorsalis, Ae. flavescens), and Anopheles (An. messeae). Among all the mosqutioes specimens,3 out of 150 captured An. messeae were found to carry ectoparasitic mites, with number of 2,4,27 mites separately. Morphological and molecular identification reached the same result as water mites(Hydrachnidiae, Hydracrina). COI gene sequence showed 94% similarity with the closest species Arrenurus truncatellus. Conlusions Literature review suggests water mites are host-specific parasitism of mosquito species and herein with the first record of Arrenurus sp. parasiting on An. Messeae in the most high-latitude region globally.
7.Fluorescence Suppression Method of Raman Spectroscopy and Its Application in Skin and Cosmetics Analysis
Yun-Xia CHEN ; Jia-Rong WANG ; Jian-Yu ZHU ; Shi-Wen LIN ; Ya-Nan LIU ; Xiao-Yue MA ; Guang-Cheng XI ; Juan LIU
Progress in Biochemistry and Biophysics 2026;53(7):1914-1926
Owing to its inherent advantages—such as being non-destructive, rapid, highly molecule-specific, and minimally interfered with by moisture—Raman spectroscopy has been widely adopted in the fields of skin barrier function assessment, monitoring the transdermal penetration of active cosmetic ingredients, and the identification and quality control of cosmetic products. Despite these strengths, the practical application of this technique faces a significant bottleneck: the strong fluorescence background generated by endogenous skin components and exogenous cosmetic additives. Endogenous skin substances, such as structural proteins (e.g., collagen and elastin), metabolic coenzymes (e.g., nicotinamide adenine dinucleotide), and pigments (e.g., melanin), together with exogenous cosmetic constituents like organic colorants, chemical sunscreens, and fragrances, often possess strong absorption and emission characteristics. When excited by lasers, these components produce a fluorescence background that can be 106 to 108 times stronger than the Raman scattering signals, effectively masking the inherently weak vibrational fingerprint information. In recent years, driven by the rapid development of optoelectronic hardware and artificial intelligence algorithms, fluorescence suppression strategies have evolved from isolated, single-method approaches into comprehensive, multi-level synergistic systems. These systems are categorized into three distinct tiers: sample preparation, signal acquisition, and data processing. At the sample preparation level, techniques such as photobleaching and surface-enhanced Raman spectroscopy (SERS) are employed to eliminate or bypass the generation of fluorescence at the source. At the signal acquisition level, instrumental improvements—including the use of long-wavelength near-infrared excitation (typically 785 nm or 1 064 nm), confocal spatial filtering, and shifted excitation Raman difference spectroscopy (SERDS)— are utilized to physically isolate Raman signals from the fluorescence background. Furthermore, at the data processing level, numerical baseline correction methods such as polynomial fitting, penalized least squares (e.g., airPLS, arPLS), wavelet transform, and derivative algorithms are increasingly integrated into the analytical pipeline to extract Raman spectral features from mixed signals without increasing hardware costs or acquisition time. This review provides a systematic categorization and critical evaluation of these fluorescence suppression methods, detailing their underlying principles, technical advantages, and inherent limitations in diverse experimental setups. By focusing on critical application scenarios—including skin barrier assessment, percutaneous absorption monitoring, the routine quality control of cosmetics, and the emerging field of portable on-site detection—this paper explores the current state of technique selection and optimization. Finally, the article discusses future development trends, emphasizing the necessity of constructing adaptive, tiered suppression strategies, developing intelligent and automated data processing algorithms, and promoting the integration of portable, multi-modal diagnostic devices. The objective of this review is to provide a comprehensive technical reference to facilitate the transition of Raman spectroscopy from a specialized laboratory tool into a routine, robust analytical platform for advancements in skin science and cosmetic research.
8.Dual Targeting of TBK1 and JAK-STAT1 Pathways by (-)-epigallocatechin-3-gallate Suppresses Type I Interferon-driven Inflammation
Liang LI ; Qi-Huan SHENG ; Huan LIU ; Wen-Hao YANG ; Jia-Lin SHI ; Ying-Jie SUN ; Rui JING ; Wei-Hua MAI ; Zhi-Min LI ; Xiao-Li XIE
Progress in Biochemistry and Biophysics 2026;53(7):1969-1983
ObjectiveType I interferon (IFN-I) signaling is essential for antiviral innate immunity, yet its sustained or excessive activation contributes to the pathogenesis of several autoimmune diseases and interferonopathies, such as systemic lupus erythematosus and Aicardi-Goutières syndrome. Current strategies targeting this pathway, exemplified by JAK inhibitors, act mainly on downstream signal transduction and provide limited direct control over upstream IFN-I production, while also carrying the risk of broad immunosuppression. Phyllanthus emblica L. has long been used in traditional medicine for inflammatory disorders, but the bioactive constituent responsible for its regulation of IFN-I signaling and the underlying molecular mechanism have not been clearly defined. This study aimed to identify the active anti-inflammatory component of P. emblica and to characterize its mechanism of action on the IFN-I pathway in macrophages. MethodsActive components ofP. emblica and their candidate targets were screened by network pharmacology using the TCMSP and DrugBank databases (oral bioavailability≥30%, drug-likeness≥0.18) and intersected with inflammation-related genes retrieved from public databases. The predicted interaction between EGCG and IFN-I pathway proteins (TBK1, IRF3, STAT1) was evaluated by molecular docking, with BX795 and GSK8612 used as reference TBK1 inhibitors. Mechanistic experiments were performed in THP-1-derived macrophages and primary bone marrow-derived macrophages (BMDM). Upstream signaling was activated by transfection of the nucleic acid analogs poly(I∶C) and poly(dA∶dT) or by lipopolysaccharide (LPS) stimulation, whereas downstream signaling was activated by exogenous IFN-β. An siRNA-mediated TREX1 knockdown model was used to mimic endogenous nucleic acid-driven interferonopathy. Expression of IFN-β1 and interferon-stimulated genes (ISGs) was measured by RT-qPCR, protein phosphorylation by Western blot, and IFN-β secretion by ELISA. Cellular thermal shift assay (CETSA) and drug affinity responsive target stability (DARTS) were used to probe the interactionbetween EGCG and IRF3. ResultsNetwork pharmacology identified (-)-epigallocatechin-3-gallate (EGCG) as a candidate IFN-I-suppressive constituent of P. emblica, with predicted binding to TBK1, IRF3, and STAT1. Molecular docking yielded binding energies of -9.2, -7.2, and -8.2 kcal/mol for TBK1, IRF3, and STAT1, respectively, indicating an affinity for TBK1 comparable to that of the reference inhibitors BX795 (-5.7 kcal/mol) and GSK8612 (-6.4 kcal/mol). EGCG suppressed IFN-β1 and ISG mRNA expression under poly (I∶C), poly (dA∶dT), and LPS stimulation in both THP-1 macrophages and BMDM. At the protein level, EGCG reduced the phosphorylation of TBK1 and IRF3 without affecting the levels of the upstream sensors cGAS and RIG-I, and lowered IFN-β secretion in a concentration-dependent manner. CETSA and DARTS showed that EGCG did not enhance the thermal stability or protease resistance of IRF3, indicating that its effect on IRF3 is indirect. Following IFN-β stimulation, prolonged EGCG treatment reduced STAT1 phosphorylation in a time-dependent manner without an apparent change in IRF9, and partially attenuated ISG transcription; this effect was not monotonicly concentration-dependent, and CXCL10 showed the most consistent suppression. In TREX1-knockdown cells, the elevated mRNA levels of ISG15, ISG56, and CXCL10 were reduced by EGCG. ConclusionEGCG suppresses IFN-I responses by concurrently inhibiting TBK1-IRF3-dependent IFN‑β production and JAK-STAT1-mediated downstream transcription. These in vitro findings provide a mechanistic basis for the anti-inflammatory use of P. emblica in traditional medicine and identify EGCG as a candidate for further evaluation in interferon-driven autoimmune disease models.
9.Clinical Use of Denosumab for Refractory Hypercalcemia: A Retrospective Case Series
Mohammad Amirul Shahril ; Florence Hui Sieng Tan ; Ee Wen Loh ; Pei Lin Chan ; Sing Yee Sim
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):71-
Introduction:
Severe hypercalcemia is most commonly caused by primary
hyperparathyroidism (PHPT) and malignancy. While
standard therapies are effective in most cases, a subset of
patients have persistent or refractory hypercalcemia. We
present a retrospective case series detailing the clinical
characteristics, biochemistry, and outcomes of patients
treated with denosumab for hypercalcemia.
Cases:
Seven patients with severe hypercalcemia were identified,
comprising five with PHPT and two with malignancyassociated hypercalcemia. The mean age was 70.4 years
(range 55–86), with 71% female (n = 5) and 29% male (n
= 2). Baseline corrected calcium ranged from 2.92 to 4.59
mmol/L, with a mean of 3.26 mmol/L. In the PHPT cohort,
parathyroid hormone (PTH) levels were significantly
elevated (16.7–168 pmol/L), while malignancy patients had
suppressed PTH (0.6 and 0.9 pmol/L).
Prior to denosumab, 4/7 patients (57%) received bisphosphonates, 3/7 (43%) received calcitonin, and 1/7 (14%) was
treated with cinacalcet. Denosumab resulted in a mean
reduction in corrected calcium of 0.22 mmol/L from 3.26
to 3.03 mmol/L.
Biochemical response was observed in 5/7 patients (71%).
Of these, 3 patients (43%) achieved normocalcemia,
while 2 patients (29%) demonstrated a partial response.
The remaining 2/7 patients (29%) showed no significant
improvement in calcium levels. Among responders, the
mean time to calcium reduction to <3.0 mmol/L was 27 days
(range 7–47). Repeat dosing was required in the majority
of patients, with a mean of 1.7 doses per patient (range
1–4), indicating variability in both onset and durability
of response. Among patients with PHPT, four underwent
parathyroidectomy, and one declined surgery. Both patients
with malignancy were managed nonsurgically.
Conclusion
Denosumab achieved normocalcemia in 43% of patients,
with additional partial responses. Its effects were variable,
with delayed response and frequent need for repeat dosing,
supporting its role as an adjunctive or bridging therapy
rather than as a definitive treatment.
Denosumab
;
Hypercalcemia
;
Retrospective Studies
10.Fatal Hypercalcemic Crisis Secondary to Primary Hyperparathyroidism: A Case Report
Pey Hui See ; Ee Wen Loh ; Pei Lin Chan ; Florence Hui Sieng Tan
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):75-
Introduction:
Hypercalcemic crisis, a decompensated state characterized
by multiorgan dysfunction and a corrected serum calcium
(CCa) level typically >3.5 mmol/L, is a rare but lifethreatening endocrine emergency that requires prompt
recognition and aggressive multimodal management. We
report a fatal case of hypercalcemic crisis secondary to
primary hyperparathyroidism, which was refractory to
multiple lines of medical therapy.
Case:
A 55-year-old female with diabetes mellitus, hypertension,
and chronic kidney disease (creatinine 159 umol/L; estimated glomerular filtration rate 33 mL/min) presented with
3 days of confusion, profound fatigue, and constipation,
preceded by a 1-month history of polyuria and polydipsia.
Her Glasgow Coma Scale (GCS) was E4V3M5. Physical
examination was unremarkable, with no palpable neck
swelling. Significant laboratory findings included severe
hypercalcemia with markedly elevated serum intact
parathyroid hormone (iPTH) (CCa 4.49 mmol/L; phosphate
1.01 mmol/L; iPTH 60.1 pmol/L [N 1.6–6.0]; creatinine
149 umol/L). Saline diuresis was initiated together with
subcutaneous calcitonin, resulting in an initial biochemical
response, with CCa decreasing to a nadir of 3.61 mmol/L.
However, the CCa subsequently rebounded to 5.00 mmol/L.
Hemodialysis was performed, followed by administration
of subcutaneous denosumab 60 mg. Nonetheless, the CCa
decreased only modestly to 4.28 mmol/L. She became
increasingly drowsy, and her clinical course was further complicated by aspiration pneumonia and lung collapse,
leading to respiratory failure requiring intubation and
inotropic support. Despite intensive care, additional
sessions of hemodialysis and continuous renal replacement
therapy, her CCa remained persistently above 4.0 mmol/L,
peaking at 5.35 mmol/L. Due to her critical condition,
imaging for lesion localization could not be performed.
She eventually succumbed to her illness on day 10 of
admission, before definitive surgery could be undertaken.
Conclusion
This case highlights the potentially fatal course of
hypercalcemic crisis secondary to primary hyperparathyroidism. The reported mortality rate is high, at around
60%. Early recognition and intensive management,
including emergency parathyroidectomy in resistant cases,
have been shown to be crucial in improving outcomes.
Hyperparathyroidism, Primary


Result Analysis
Print
Save
E-mail