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Tamaraw on a comeback

A collaboration between the Department of Environment and Natural Resources (DENR), Tamaraw Conservation Programme (TCP), Far Eastern University (FEU), World Wide Fund for Nature (WWF) and Mindoro’s indigenous Tau Buid tribesfolk, the Tamaraw Times Two project aims to double the number of wild tamaraw from 300 to 600 by 2020.

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The tamaraw, the Philippines’ largest and rarest endemic land animal, is on a comeback. In 1969, the global population was thought to have dropped to less than 100 heads, threatening the species with extinction.

Tamaraw family photographed in the Iglit-Baco Mountain Range in Occidental Mindoro. The tamaraw is the world’s rarest buffalo species, with just a few hundred holding out atop Mindoro’s highest mountains. Fortunately, the population is steadily recovering. The country celebrates Tamaraw Month this October.  (Gregg Yan / WWF)

Tamaraw family photographed in the Iglit-Baco Mountain Range in Occidental Mindoro. The tamaraw is the world’s rarest buffalo species, with just a few hundred holding out atop Mindoro’s highest mountains. Fortunately, the population is steadily recovering. The country celebrates Tamaraw Month this October.
(Gregg Yan / WWF)

Today, due to strong conservation efforts, the tamaraw population stands at 382 – the highest ever recorded.

A collaboration between the Department of Environment and Natural Resources (DENR), Tamaraw Conservation Programme (TCP), Far Eastern University (FEU), World Wide Fund for Nature (WWF) and Mindoro’s indigenous Tau Buid tribesfolk, the Tamaraw Times Two project aims to double the number of wild tamaraw from 300 to 600 by 2020.

“We counted 382 heads during our annual survey last April – a big improvement from the 345 recorded in 2013, and the 327 we saw in 2012. We’re also seeing more juveniles – a sure sign that population recovery is underway,” reports TCP head and Mts. Iglit-Baco Park superintendent Rodel Boyles.

Differentiated from the larger and more docile carabao (Bubalus bubalis carabanesis), the stocky tamaraw (Bubalis mindorensis) bears distinctive V-shaped horns, a shorter tail and a scraggly coat of chocolate to ebony fur. Adults stand four feet tall and average 300 kilograms – half as much as a typical carabao.

An estimated 10,000 tamaraw thrived in Mindoro in the early 1900s. The population was decimated by widespread logging, hunting and an outbreak of cattle-killing rinderpest in the 1930s. Just a few hundred survive atop the grassy slopes and forest patches of Mts. Iglit, Baco, Aruyan, Bongabong, Calavite and Halcon in Mindoro today.

Except for calving cows, adult tamaraw are mostly solitary. Cornered or threatened, they can be aggressive, chasing their foes up to a kilometer. They are extremely tough: hunters have long claimed to have emptied entire assault rifle clips into charging bulls, to no avail. The tamaraw is classified as critically endangered – the highest risk rating for any animal species. Four national laws protect it from poaching – Commonwealth Act 73 plus Republic Acts 1086, 7586 and 9147. Conservation efforts date back nearly 40 years.

“We aim to synthesize improved park management with enhanced population survey methods. Adding new survey sites and deploying motion-activated camera traps for example, shall give us a clearer picture of tamaraw numbers – especially in areas too remote to study effectively,” explains WWF-Philippines Conservation Programs head Joel Palma. “Empowering adjacent communities for the protection of tamaraw breeding, grazing and wallowing areas is also crucial in boosting numbers.”

State-of-the-art camera traps deployed by WWF and TCP in Mindoro’s Iglit-Baco Natural Park have also revealed new images of Mindoro’s rarely-seen fauna – suggesting that enhanced park management has buoyed more than tamaraw numbers. The cameras have captured images of Philippine brown deer (Cervus mariannus), Philippine warty pigs (Sus philippensis) and red jungle fowl (Gallus gallus), the wild form of the domestic chicken.

The Tamaraw Times Two project aims to revitalize much of Mindoro’s deforested mountain habitats, promoting a holistic ‘Ridge-to-Reef’ approach. Healthy peaks and forests translate to a better-managed source of water so essential for the vast rice-lands of Mindoro’s western floodplains. Healthy mountains in turn, are conducive to productive coasts and coral reefs, a source of seafood for millions.

“It is doubtless that the tamaraw population stands at its highest in years,” concludes FEU president Dr. Michael Alba, whose school emblem also bears the horned visage of the tamaraw. “More than any other animal, it is a symbol of Filipino pride and ferocity. That our allies have counted 37 more heads from last year proves we’re on the right track.”

The Philippines celebrates Tamaraw Month every October.

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Maintaining a healthy heart may require regular doses of positivity

The findings of this study further point to the importance of attending to mental and behavioral health for cardiovascular disease prevention and cardiovascular health optimization.

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Positive psychology interventions such as mindfulness, gratitude journaling and optimism training can consistently improve blood pressure, inflammation markers and other cardiovascular disease risk factors within a matter of weeks, a recent study found. However, since these benefits are associated with lifestyle changes such as eating healthier and greater physical activity, the researchers suggested that ongoing reinforcements may be needed to stay on course long term.

Rosalba (Rose) Hernandez, a professor of social work at the University of Illinois Urbana-Champaign, led a team that analyzed the findings of 18 randomized controlled trials that used positive psychological and mindfulness interventions to enhance mental or physical health.

The programs that the team reviewed included individual methods — such as structured telephone sessions, journaling with brief check-ins and digital platforms such as apps and text messaging — and interactive in-person group sessions, as well as hybrid formats that blended these with online tools and virtual meetings. Most of the programs consisted of weekly sessions and at-home activities that reinforced the skills taught, with the majority of programs lasting from six to 12 weeks, the team found.

In general, the programs included 50-200 adults with elevated cardiovascular risk factors such as uncontrolled hypertension, heart failure or other conditions. Typically, the participants were in their late 50s to mid-60s, and women comprised 35-55% of the samples across those studies that reported their participants’ gender, according to the researchers.

“In hypertension and postacute coronary syndrome cohorts, mindfulness-based programs delivered over an eight-week period reduced systolic blood pressure and lowered inflammatory markers such as high-sensitivity C-reactive protein and fibrinogen,” said Hernandez, who is a Fellow of the American Heart Association. “A 12-week spirituality-based digital intervention achieved one of the largest reductions — reducing systolic blood pressure measured with a standard cuff by 7.6 points, and central systolic pressure — which is measured in the aorta as it leaves the heart — by 4.1 points.”

In prior research on positive psychology interventions, scientists seldom defined the dose that was needed to obtain the beneficial effects, Hernandez said. She and the team members sought to clarify the frequency and duration that was most likely to improve individuals’ cardiovascular health.

Programs that had more frequent contact with their participants yielded the most consistent physiological benefits, underscoring the opportunity to embed positive psychological strategies into long-term cardiovascular care, Hernandez said.

The team found that the strongest behavioral improvements were achieved by an eight-week program delivered over WhatsApp that combined weekly sessions with daily microtasks, motivating participants to engage in greater physical activity, eat a healthier diet and take their medication as prescribed. A program that included motivational interviewing succeeded in increasing cardiac patients’ levels of physical activity by 1,800 steps a day and their medication adherence, while the mindfulness programs improved participants’ activity levels and diets only, according to the study.

“The therapeutic dose that was most consistently linked with improvements in blood pressure, inflammation and endothelial function was daily practice reinforced by weekly sessions over eight to 12-week periods,” Hernandez said. “Therapeutic dosing typically involved high-frequency dosing over this time period to obtain short-term physiologic benefits, while ongoing less-intensive contact may be needed to sustain behavioral change.”

Published in the journal Cardiology Clinics, the study was co-written by University of South Florida social work professor Soonhyung Kwon; Alyssa M. Vela, a professor of surgery and of psychiatry and behavioral sciences at Northwestern University Feinberg School of Medicine; and Katharine S. Edwards, a professor of cardiovascular medicine and of psychiatry and behavioral medicine at Stanford Medicine.

“The findings of this study further point to the importance of attending to mental and behavioral health for cardiovascular disease prevention and cardiovascular health optimization,” Vela said. “This speaks to the need for routine screening and integration of cardiac behavioral medicine to allow for access to important interventions.”

The current study adds to a growing body of research linking psychological well-being — including traits such as optimism, positive affect and gratitude — with cardioprotective benefits.

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Heart disease risk may start in the womb, study finds

Young adults whose mothers had high blood pressure during pregnancy — either pregnancy-associated hypertension, pre-eclampsia or eclampsia — had more signs of early arterial injury, higher blood pressure, higher body mass index and higher blood sugar than peers.

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A child’s future heart health may be partially shaped before they are born, reports a new Northwestern Medicine study that found pregnancy complications are linked to poorer cardiovascular health in offspring more than 20 years later.

The study found that young adults whose mothers had high blood pressure during pregnancy — either pregnancy-associated hypertension, pre-eclampsia or eclampsia — had more signs of early arterial injury, higher blood pressure, higher body mass index and higher blood sugar than peers.

The authors said the study adds to growing evidence that cardiovascular risk may be transmitted across generations through a combination of biological, environmental and behavioral factors.

“That means we must make sure people maintain good health from childhood into young adulthood, so that if or when someone becomes a parent, they pass on the best opportunity for good health to their children,” said study senior author Dr. Nilay Shah, assistant professor of medicine in the division of cardiology at Northwestern University Feinberg School of Medicine.

How the study was conducted

Shah and colleagues evaluated nearly 1,350 mother-child pairs from the Future of Families and Child Well-Being Study, which enrolled mothers and children at birth between 1998 and 2000 across 20 U.S. cities. The children were then followed into adulthood.

Using delivery hospitalization records, the Northwestern scientists first identified whether mothers experienced pregnancy complications, including high blood pressure during pregnancy, gestational diabetes (high blood sugar during pregnancy) or preterm birth (before 37 weeks of pregnancy).

The three pregnancy complications are on the rise, and affect almost one in four pregnancies in the U.S.

The research team then analyzed cardiovascular health of offspring at age 22, using blood pressure measurements, blood testing, body mass index assessments and carotid artery ultrasounds to look for signs of artery injury.

Finally, the scientists compared participants with and without exposure to each pregnancy complication and adjusted for factors like income, education, difference in birth weight and smoking during pregnancy.

Key findings

At around age 22, participants whose mothers had high blood pressure during pregnancy had:

  • Higher body mass index (+2.8 BMI points)
  • Higher diastolic blood pressure (+2.3 mm Hg)
  • Higher blood sugar levels (+0.2% HbA1c)
  • Thicker artery walls (~0.02 mm)

While the difference in artery wall thickness may seem small, the study authors said it corresponds to roughly three to five years of additional vascular aging. That means arteries looked older and less healthy than expected, which raises the risk of future heart disease.

Other pregnancy complications also showed some long-term effect:

  • Exposure to gestational diabetes was linked to worse blood pressure and some evidence of artery thickening
  • Being born preterm was associated with higher blood sugar levels

‘Most heart disease is preventable’

With pregnancy complications on the rise in the U.S., Shah said the study provides compelling evidence that improving health before and during pregnancy could help reduce heart disease risk in the next generation.

“There is evidence that both parents’ health at the time of conception and during pregnancy influences a child’s health,” he said. “So, promoting health from an early age, like exercising regularly, eating healthfully, never smoking and getting enough sleep, is not just meant for an individual, but doing so may help future generations be healthier, too.”

Shah also emphasizes that risk is not destiny.

“The good news is that most heart disease is preventable,” he said. “If you experienced high blood pressure or high blood sugar during pregnancy, or your child was born early, it does not absolutely mean that your child will have worse health as adults. But I would encourage you to pay attention now to your child’s health behaviors.

“What children learn in childhood sets the stage for their health across their lives. If you are wondering whether your children’s behaviors are healthy, or are considering making a change, please speak with your child’s pediatrician for advice and guidance.”

Other Northwestern co-authors include Emily Lam, Abigail Gauen, Dr. Sadiya Khan, Alexa Freedman and Norrina Allen.

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Viagra could hold key to halting Peyronie’s disease

Combining two widely prescribed drug classes could provide the first effective treatment for early-stage Peyronie’s disease.

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Combining two widely prescribed drug classes could provide the first effective treatment for early-stage Peyronie’s disease, according to a study published in The Journal of Sexual Medicine.

Peyronie’s disease (PD) is caused by the development of fibrotic scar tissue within the penis, leading to pain, curvature, sexual dysfunction and, in many cases, significant psychological distress. It affects an estimated 10 per cent of men during their lifetime, but despite its prevalence, treatment options are limited, particularly in the early phase of the condition.

The study, carried out by Anglia Ruskin University (ARU) and University College London Hospital (UCLH), found that combining phosphodiesterase type 5 (PDE5) inhibitors such as sildenafil (Viagra) and tadalafil (Cialis) with selective oestrogen receptor modulators (SERMs), including tamoxifen, may slow or even stop disease progression when given early.

The clinical study, carried out by Professor David Ralph of UCLH, evaluated outcomes in 133 men diagnosed with acute Peyronie’s disease who were treated with the drug combination for three months. Their results were compared with a smaller group of patients receiving standard care, which included giving vitamin E or no treatment at all. Standard care did not include surgery.

The study found 43 per cent of patients on the combination experienced an improvement in penile curvature, almost three times higher than in the standard‑care group (15 per cent).

At the start of treatment, 65 per cent of patients in the combination group reported pain during erections. After three months, that figure had fallen to just 1.5 per cent. By comparison, pain prevalence in the standard‑care group fell from 50 per cent to 27 per cent.

The clinical findings build on earlier laboratory work led by Professor Selim Cellek at ARU’s Fibrosis Research Group. Over the course of several years, Professor Cellek’s team screened 1,953 FDA‑approved drugs to identify compounds capable of blocking the transformation of fibroblasts into myofibroblasts, the key cells responsible for fibrosis. PDE5 inhibitors and SERMs emerged as particularly effective, and when used together demonstrated an effect greater than either drug alone.

Currently, there are no approved oral therapies proven to prevent early disease progression, forcing patients in the acute phase to wait until the condition stabilises before they can be offered treatments including injections or surgery.

Professor Cellek said: “Positive findings from this pilot clinical study validate our drug‑screening approach in the lab. It shows how repurposing well‑known medicines can accelerate progress in areas of unmet clinical need.

“Because both PDE5 inhibitors and SERMs are already widely used in clinical practice and have established safety profiles, the approach could be readily adoptable if confirmed in larger studies.

“These results suggest that early intervention targeting fibrosis could change how we treat Peyronie’s disease. Repurposing existing drugs may allow us to move from managing symptoms to modifying the disease itself.”

Professor David Ralph, Professor of Urology at UCLH, said: “This paper confirms the basic science research with regards to halting the progression of Peyronie’s disease. In previous papers we have noted that tamoxifen and PDE5 inhibitors inhibit the transformation of fibroblasts into myofibroblasts and therefore contraction of the plaque.

“This has now been put into clinical practice where this paper shows that when tamoxifen and a PDE5 inhibitor are combined, there is statistically less progression of the disease and improvement in curvature compared to the control arm. This is where from bench to clinical practice prevails and hopefully now a prospective clinical trial can be initiated.”

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