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Clinical Case Reports Jun 2024We report a patient with nonimmune fetal hydrops and multiple pathologic fractures. RNA analysis revealed a novel variant. This report is the first to elucidate...
We report a patient with nonimmune fetal hydrops and multiple pathologic fractures. RNA analysis revealed a novel variant. This report is the first to elucidate PIEZO1's role as a critical regulator of bone mass and strength.
PubMed: 38883227
DOI: 10.1002/ccr3.9082 -
Ultrasonography (Seoul, Korea) May 2024Assessing the severity of breast cancer-related lymphedema (BCRL) requires various clinical tools, yet no standardized methodology is available. Ultrasonography shows...
PURPOSE
Assessing the severity of breast cancer-related lymphedema (BCRL) requires various clinical tools, yet no standardized methodology is available. Ultrasonography shows promise for diagnosing lymphedema and evaluating its severity. This study explored the clinical utility of ultrasonography in patients with BCRL.
METHODS
In this retrospective cross-sectional study, patients with unilateral BCRL were examined. The analyzed data included demographics, lymphedema location, International Society of Lymphology (ISL) stage, surgical history, treatment regimens, and arm circumference. Skin, subcutis, and muscle thicknesses were assessed ultrasonographically at predetermined sites, and the percentage of excess thickness was calculated. Multivariate logistic regression analysis was employed to identify associations between ultrasonographic measurements and advanced lymphedema (ISL 2 or 3). The Lymphedema Quality of Life arm questionnaire was used to evaluate patient-reported outcomes regarding lymphedema and their correlations with ultrasonographic findings.
RESULTS
Among 118 patients, 71 were classified as ISL 0-1 and 47 as ISL 2-3. Patients with advanced lymphedema were older, had higher nodal stages, underwent more axillary lymph node dissections, and had higher rates of dominant-arm lymphedema. Multivariate logistic regression revealed significant associations of greater skin thickness (adjusted odds ratio [OR], 4.634; 95% confidence interval [CI], 1.233 to 17.419), subcutis thickness (adjusted OR, 7.741; 95% CI, 1.649 to 36.347), and subcutis echogenicity (adjusted OR, 4.860; 95% CI, 1.517 to 15.566) with advanced lymphedema. Furthermore, greater skin thickness (P=0.016) and subcutis echogenicity (P=0.023) were correlated with appearance-related discomfort.
CONCLUSION
Ultrasonographic measurements were significantly associated with advanced lymphedema in BCRL. Ultrasonography represents a valuable diagnostic and severity assessment tool for lymphedema.
PubMed: 38881309
DOI: 10.14366/usg.24059 -
Biological & Pharmaceutical Bulletin 2024Secondary lymphedema occurs after cancer surgery involving lymph node dissection owing to the lymphatic system dysfunction. However, the pathophysiology of lymphedema...
Secondary lymphedema occurs after cancer surgery involving lymph node dissection owing to the lymphatic system dysfunction. However, the pathophysiology of lymphedema and the molecular pathways involved remain unknown. This study aimed to develop a rat hindlimb lymphedema model and investigate the mechanisms that drive pathophysiology and the effects of the traditional Japanese medicine goreisan on lymphedema. The rat lymphedema model was induced by combination surgeries of popliteal lymph node dissection, skin cautery incision, and fascial ablation coagulation in the right hindlimb using male Wistar rats. The foot volume was significantly increased, and recovery was delayed by combination surgeries. Dermal thickness and dilated lymphatic vessels of the hindlimb were observed on postoperative day 2. The number of infiltrating leukocytes (CD45 cells), including CD4 T-cells, increased in the lymphedema group compared with that in the sham group. The relative mRNA expression and protein levels of interleukin-6 (IL-6), CC chemokine ligand 2 (CCL2), transforming growth factor β1 (TGF-β1), and Fms-related receptor tyrosine kinase 4 (FLT4) were significantly higher in the lymphedema group than in the sham group. Foot volume was decreased by goreisan, furosemide, and prednisolone treatments. Goreisan diminished the increase in CD4 T-cells, and the same trend was observed for CCL2 and FLT4 expression. In conclusion, the rat hindlimb lymphedema model in this study exhibited increased foot volume, skin-infiltrating cells, and pathological changes accompanied by inflammatory and fibrotic responses, suggesting that the model presented significant clinical features of lymphedema. Goreisan may exert a therapeutic effect on lymphedema by inhibiting CD4 T-cell infiltration.
Topics: Animals; Male; Rats; CD4-Positive T-Lymphocytes; Disease Models, Animal; Hindlimb; Lymphedema; Medicine, East Asian Traditional; Rats, Wistar
PubMed: 38880626
DOI: 10.1248/bpb.b23-00829 -
Annals of Surgical Treatment and... Jun 2024We aimed to analyze the occurrence of lymphedema as a side effect in patients who underwent regional nodal irradiation (RNI) following surgery for breast cancer.
PURPOSE
We aimed to analyze the occurrence of lymphedema as a side effect in patients who underwent regional nodal irradiation (RNI) following surgery for breast cancer.
METHODS
This retrospective study was conducted on patients with breast cancer who underwent surgery from July 2014 to October 2020 at Inje University Busan Paik Hospital. The analysis included 113 cT1-3N1-3M0 breast cancer patients who underwent RNI as part of radiotherapy (RT). Mostly, surgeries were performed using breast-conserving surgery (n = 99, 87.6%), except for 14 patients with modified radical mastectomy. The total RT dose for RNI was 45-60 Gy, and the fraction size was 1.8-2.0 Gy. Most patients underwent chemotherapy (n = 98, 86.7%), including taxanes (n = 92, 81.4%).
RESULTS
The median follow-up was 61.1 months (range, 5.0-110.5 months). Lymphedema occurred in 54 patients (47.8%) after surgery. Twenty of them (17.7%) developed a new onset of lymphedema after RT, while 34 (30.1%) detected lymphedema before the completion of RT. Over the follow-up, 16 patients (14.2%) experienced recurrence. High radiation dose (>50.4 Gy) for RNI (P = 0.003) and taxane use (P = 0.038) were related to lymphedema occurrence after RT. Moreover, lymphedema occurrence after RT was also related to recurrence after surgical resection (P = 0.026). Breast-conserving surgery was related to early-onset lymphedema before the completion of RT (P = 0.047). Furthermore, the degree of lymph node dissection (≤4) was related to the overall occurrence of lymphedema (P = 0.045).
CONCLUSION
Considering a reduction in RNI dose may be beneficial in mitigating the incidence of lymphedema after RT in patients with breast cancer.
PubMed: 38868589
DOI: 10.4174/astr.2024.106.6.337 -
Cell Transplantation 2024Lymphedema is an intractable disease with few effective therapeutic options. Autologous mesenchymal stem cell (MSC) transplantation is a promising therapy for this...
Lymphedema is an intractable disease with few effective therapeutic options. Autologous mesenchymal stem cell (MSC) transplantation is a promising therapy for this disease. However, its use is limited by the cost and time for preparation. Recently, xenotransplantation of porcine MSCs has emerged as an alternative to autologous MSC transplantation. In this study, we aimed to clarify the usefulness of neonatal porcine bone marrow-derived MSC (NpBM-MSC) xenotransplantation for the treatment of lymphedema. One million NpBM-MSCs were xenotransplanted into the hind limbs of mice with severe lymphedema (MSC transplantation group). The therapeutic effects were assessed by measuring the femoral circumference, the volume of the hind limb, the number and diameter of lymphatic vessels in the hind limb, and lymphatic flow using a near-infrared fluorescence (NIRF) imaging system. We compared the effects using mice with lymphedema that did not undergo NpBM-MSC transplantation (negative control group). The condition of the transplanted NpBM-MSCs was also evaluated histologically. The femoral circumference and volume of the hind limb had been normalized by postoperative day (POD) 14 in the MSC transplantation group, but not in the negative control group ( = 0.041). NIRF imaging revealed that lymphatic flow had recovered in the MSC transplantation group by POD 14, as shown by an increase in luminance in the hind limb. Histological assessment also showed that the xenotransplantation of NpBM-MSC increased the proliferation of lymphatic vessels, but they had been rejected by POD 14. The xenotransplantation of NpBM-MSCs is an effective treatment for lymphedema, and this is mediated through the promotion of lymphangiogenesis.
Topics: Animals; Mesenchymal Stem Cell Transplantation; Swine; Mice; Lymphedema; Hindlimb; Transplantation, Heterologous; Mesenchymal Stem Cells; Lymphatic Vessels; Bone Marrow Cells; Animals, Newborn
PubMed: 38867486
DOI: 10.1177/09636897241260195 -
Infectious Diseases of Poverty Jun 2024Preventive chemotherapy with ivermectin and albendazole (IA) in mass drug administration (MDA) programs for all at-risk populations is the core public health...
Efficacy of ivermectin and albendazole combination in suppressing transmission of lymphatic filariasis following mass administration in Tanzania: a prospective cohort study.
BACKGROUND
Preventive chemotherapy with ivermectin and albendazole (IA) in mass drug administration (MDA) programs for all at-risk populations is the core public health intervention to eliminate lymphatic filariasis (LF). Achieving this goal depends on drug effectiveness in reducing parasite reservoirs in the community to halt transmission. We assessed the efficacy of ivermectin and albendazole in clearing microfilariae and circulating filarial antigens (CFA) following MDA.
METHODS
This community-based prospective study was conducted in Mkinga district, Tanga region, Tanzania, from November 2018 to June 2019. A total of 4115 MDA-eligible individuals were screened for CFA using Filarial test strips. CFA positives were re-examined for microfilariae by microscopy. CFA and microfilariae positive individuals were enrolled and received IA through MDA campaign. The status of microfilariae and CFA was monitored before MDA, and on day 7 and six-month following MDA. The primary efficacy outcomes were the clearance rates of microfilariae on day 7 and six-months, and CFA at 6 months of post-MDA. The McNemar test assessed the proportions of microfilariae positive pre- and post-MDA, while Chi-square tests were utilized to examine factors associated with CFA status six months post-MDA.
RESULTS
Out of 4115 individuals screened, 239 (5.8%) tested positive for CFA, of whom 11 (4.6%) were also positive for microfilariae. Out of the ten microfilariae-positive individuals available for follow-up on day 7, nine tested negative, yielding a microfilariae clearance rate of 90% [95% confidence interval (CI): 59.6-98.2%]. Participants who tested negative for microfilariae on day 7 remained free of microfilariae six months after MDA. However, those who did not clear microfilariae on day-7 remained positive six-months post-MDA. The McNemar test revealed a significant improvement in microfilariae clearance on day 7 following MDA (P = 0.02). Out of 183 CFA-positive individuals who were available at 6-month follow-up, 160 (87.4%) remained CFA positive, while 23 became CFA negative. The CFA clearance rate at 6 months post-MDA was 12.6% (95% CI: 8.5-8.5%). There was no significant association of variability in ivermectin plasma exposure, measured by maximum concentration or area under the curve, and the clearance status of microfilariae or CFA post-MDA.
CONCLUSIONS
Preventive chemotherapy with IA effectively clears microfilariae within a week. However, it is less effective in clearing CFA at six months of post-MDA. The low clearance rate for filarial antigenemia underscores the need for alternative drug combinations and additional preventive measures to achieve LF elimination by 2030.
Topics: Ivermectin; Albendazole; Tanzania; Humans; Elephantiasis, Filarial; Prospective Studies; Male; Mass Drug Administration; Female; Adult; Middle Aged; Adolescent; Young Adult; Animals; Child; Filaricides; Drug Therapy, Combination; Microfilariae; Aged; Child, Preschool; Antigens, Helminth; Treatment Outcome
PubMed: 38867265
DOI: 10.1186/s40249-024-01214-3 -
Internal Medicine (Tokyo, Japan) Jun 2024A 53-year-old man with chronic dyspnea and bilateral pleural effusion was subsequently diagnosed with idiopathic chylothorax. Lymphatic scintigraphy confirmed lymphatic...
A 53-year-old man with chronic dyspnea and bilateral pleural effusion was subsequently diagnosed with idiopathic chylothorax. Lymphatic scintigraphy confirmed lymphatic fluid leakage at the left venous angle, prompting management with lymphaticovenular anastomosis (LVA). Although the left pleural effusion was controlled, the right pleural effusion continued to increase, resulting in bilateral leg lymphedema that was refractory to LVA. Approximately three years and three months after the presentation, the patient succumbed to CO narcosis and renal failure. It is crucial to study additional cases in order to uncover new causes and develop pathology-based treatments for this condition.
PubMed: 38866525
DOI: 10.2169/internalmedicine.3805-24 -
Cirugia Y Cirujanos 2024This study aimed to investigate the effects of complex decongestive therapy (CDT) applied to the lower extremities of patients with lymphedema of different causes on the... (Comparative Study)
Comparative Study
OBJECTIVE
This study aimed to investigate the effects of complex decongestive therapy (CDT) applied to the lower extremities of patients with lymphedema of different causes on the extremity volume, quality of life (QoL), and functionality.
MATERIALS AND METHOD
The study included 90 patients, of whom 28 had primary lymphedema, 30 had secondary lymphedema, 18 had phlebolymphedema, and 14 had lipolymphedema. A total of 137 extremities were treated with CDT. The patients who received CDT for 5 days a week for 3 weeks (15 sessions in total) were included in the sample. Extremity volume was measured using a tape measure. The lymphedema QoL-Leg Questionnaire was used to evaluate QoL, and the lower extremity functional scale (LEFS) was administered to assess lower extremity functionality.
RESULTS
The changes in QoL before and after treatment significantly differed in the primary lymphedema, phlebolymphedema, and lipolymphedema groups (p < 0.05). The post-treatment LEFS scores indicated a significant decrease in the phlebolymphedema and lipolymphedema groups compared to the pre-treatment scores (p < 0.05).
CONCLUSIONS
The difference in appearance, which is one of the sub-parameters of QoL, significantly decreased in the comparisons performed between the groups, whereas the changes in the remaining parameters were not significant.
Topics: Humans; Quality of Life; Lymphedema; Female; Male; Middle Aged; Adult; Lower Extremity; Aged; Surveys and Questionnaires
PubMed: 38862116
DOI: 10.24875/CIRU.23000330 -
Frontiers in Oncology 2024To investigate the impact of Complex Decongestive Therapy (CDT) on the severity of frailty and quality of life in individuals suffering from postmastectomy lymphedema...
OBJECTIVE
To investigate the impact of Complex Decongestive Therapy (CDT) on the severity of frailty and quality of life in individuals suffering from postmastectomy lymphedema syndrome.
METHODS
Participants who met the inclusion criteria were informed about CDT and informed consent was obtained. Edmonton Frailty Scale (EFS), extremity volüme (EV), lymphedema stage(LS), EQ-5D General Quality of Life Scale (EQ-5D-5L), and Quick Disabilities of Arm, Shoulder, and Hand (DASH) scores were evaluated by the same physician before and after treatment. A total of 15 sessions of CDT were performed for 3 weeks, five days a week. During the treatment period, hospitalized patients received guidance from a nurse on protecting the affected arm in their daily routine.
RESULTS
Eighty patients with breast cancer-related lymphedema who met the inclusion criteria were included in the study. Following a period of 3 weeks of practice and training, the specialist physician conducted the final evaluation and assessments. All patients showed a statistically significant reduction in EV, and regression in LS, EFS, and Quick DASH score (p<0.001). Statistically significant improvement was also observed in quality of life and general health status. (p<0.001).
CONCLUSION
The application of 15 sessions of CDT and educational interventions to women with postmastectomy lymphedema syndrome due to breast cancer yielded positive outcomes. This approach led to an enhancement in patients' functional capacity, improving their quality of life and a subsequent reduction in the severity of frailty.
PubMed: 38854727
DOI: 10.3389/fonc.2024.1297074 -
Scientific Reports Jun 2024Brugia malayi are thread-like parasitic worms and one of the etiological agents of Lymphatic filariasis (LF). Existing anthelmintic drugs to treat LF are effective in...
Brugia malayi are thread-like parasitic worms and one of the etiological agents of Lymphatic filariasis (LF). Existing anthelmintic drugs to treat LF are effective in reducing the larval microfilaria (mf) counts in human bloodstream but are less effective on adult parasites. To test potential drug candidates, we report a multi-parameter phenotypic assay based on tracking the motility of adult B. malayi and mf in vitro. For adult B. malayi, motility is characterized by the centroid velocity, path curvature, angular velocity, eccentricity, extent, and Euler Number. These parameters are evaluated in experiments with three anthelmintic drugs. For B. malayi mf, motility is extracted from the evolving body skeleton to yield positional data and bending angles at 74 key point. We achieved high-fidelity tracking of complex worm postures (self-occlusions, omega turns, body bending, and reversals) while providing a visual representation of pose estimates and behavioral attributes in both space and time scales.
Topics: Brugia malayi; Animals; Microfilariae; Phenotype; Humans; Elephantiasis, Filarial; Anthelmintics
PubMed: 38849355
DOI: 10.1038/s41598-024-62692-x